Search Results — 2000 specimen records retrieved (1627 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
  CAS-BOT-BC330627  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 s.n. Butte Jonesville, near Butte Creek Comment
  CHSC26837  Acer glabrum var. torreyi M. S. Taylor 1978-6-24 1649 Butte Humboldt Summit, Butte Co and Tehama Co. line. 2133 Comment
  CAS-BOT-BC331603  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Banks of the Feather River near Stirling Comment
  CHSC116971  Acer macrophyllum Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70. 572 Comment
  CHSC65680  Acer negundo var. californicum Vernon H. Oswald 1996-3-22 7252 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, SW corner of Tract 2, on the edge of a branch of Angel Slough. 30 Comment
  CHSC41251  Achillea millefolium S. C. Morey 1983-7-21 471 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC890987  Achillea millefolium A. A. Heller 1917-7-26 12835 Butte Butte Meadows 1402 Comment
  CHSC109860  Achnatherum lemmonii L. P. Janeway 2012-6-7 10857 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC57164  Achnatherum lemmonii J. D. Jokerst 1980-4-18 Butte Edge of Nimshew Road, 1.0 mi south of town of Nimshew. Comment
  CAS-BOT-BC29949  Achyrachaena mollis Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch near Honcut 15 Comment
  CHSC3803  Achyrachaena mollis R. L. Adams 1964-4-13 60 Butte Found at roadside of Richardson Springs Road 3/4 mile from junction of Cohassett, on south side of road. Comment
  CHSC3811  Achyrachaena mollis L. E. Dunkel 1965-3-30 10 Butte Along Pentz Road ca. 1 mi e of junction with Clark Road. 45 Comment
  CHSC90573  Achyrachaena mollis Jose Romero 1983-4-20 9 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  UCD128417  Achyrachaena mollis Susan M. Leary 1978-4-18 8 Butte Southwest corner of junction of Broyles Road and Highway 99, ca. 11.2 miles northwest of Chico. 60 Comment
  CHSC38502  Acmispon americanus var. americanus Vernon Oswald 1983-6-9 663 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 213 Comment
  CHSC39980  Acmispon americanus var. americanus L. Ahart; P. Ahart 1983-7-24 4204 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 167 Comment
  JEPS113174  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC113917  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC33899  Acmispon brachycarpus M. S. Taylor 1981-4-21 3550 Butte S side of Concow Rd, on Ridge, ca. 0.5 mi s of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 853 Comment
  CHSC95207  Acmispon brachycarpus R. D. Fischer 2004-4-14 809 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Humboldt trail adjacent Hwy 32. 426 Comment
  JEPS119579  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 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
  CHSC116168  Acmispon nevadensis var. nevadensis Lowell Ahart 2015-6-16 20229 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  CAS-BOT-BC391373  Aconitum columbianum subsp. columbianum A. A. Heller 1928-7-10 14653 Butte At Butte Meadows Comment
  CHSC52678  Aconitum columbianum var. columbianum Kirsten Tarp 1983-7-28 310 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1295 Comment
  CHSC39125  Aconogonon davisiae R. A. Schlising 1982-7-12 4318 Butte Near Humbug Summit in n part of county. Near Humbug Road. 2011 Comment
  CHSC33947  Aconogonon phytolaccifolium M. S. Taylor; L. Ahart 1981-8-16 4208 Butte N side of 25N04 near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Sitrling City. 1950 Comment
  CHSC45382  Aconogonon phytolaccifolium Vernon Oswald 1984-7-31 1630 Butte N. side of Butte Creek ca. 0.25 mi w of Humboldt Rd. near Cherry Hill. One plant on a stony gravel bar of the creek. 1402 Comment
  CHSC41299  Adenocaulon bicolor S. C. Morey 1983-7-22 552 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  JEPS108865  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 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
  CHSC48839  Adenostoma fasciculatum Vernon Oswald 1986-5-6 1994 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CDA42880  Aegilops triuncialis L. Ahart 2012-5-2 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  RSA718339  Aegilops triuncialis L. Ahart 2006-6-9 12640 Butte Along the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  CHSC20524  Aesculus pavia Pamela Caldwell 1972-4-9 Butte CSUC campus. NW corner of Auditorium. Comment
  CHSC107074  Agoseris grandiflora var. leptophylla L. P. Janeway 2011-6-29 10406 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CAS-BOT-BC13341  Agoseris retrorsa A. A. Heller 1913-5-28 10766 Butte Along Table Mountain 8 miles north of Oroville 182 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CAS-BOT-BC127445  Agrostis elliottiana Lowell Ahart 1983-6-26 4166 Butte Near Bean Creek Road, about 0.25 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  CDA13312  Agrostis exarata G. F. Hrusa, T. D. Wilfred 1996-7-9 13158 Butte Sierra Nevada; Shaded banks on E side of bridge over Marble Creek along USFS N60. Occasional, perennial. Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  POM183177  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  CHSC6144  Agrostis microphylla E. Parreno 1968-4-19 71 Butte NE of Municipal Golf in Upper Bidwell Park at side of ridge, Chico. Comment
  CHSC102963  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC39658  Agrostis pallens Lowell Ahart 1983-6-21 4091 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC70825  Agrostis pallens B. Castro; H. Durio, L. Gehrung 1995-7-24 588 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
  JEPS116002  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC1594697  Agrostis perennans Lowell Ahart 1992-7-21 6809 Butte about 2 (air ) mi ne Philbrook Reservoir (s side of Coon Hollow); Coon Hollow 1737 Comment
  UCD53349  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  UC1609046  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte about 6 (air) mi nw Feather Falls (about 100 yds w of the bridge across Fall River, w side of river); Fall River 1036 Comment
  JEPS117683  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS121955  Agrostis variabilis Lowell Ahart 2014-7-7 19605 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 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
  CHSC38721  Ailanthus altissima Vernon Oswald 1983-5-22 528 Butte Upper Bidwell Park, Chico, along the edge of the parking area at the Horse Arena. 79 Comment
  RSA754948  Aira caryophyllea L. Ahart 2008-5-12 14740 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UCD55800  Aira caryophyllea var. capillaris L. Ahart 1980-4-13 2079 Butte ca. 1.5 mi north and 3/4 mi east of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC97372  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  CHSC30978  Allium amplectens B. Hollingsworth 1980-4-25 20 Butte Ca. 11 mi nw of Chico, 3.5 mi w of Hwy 99, 0.25 mi n of Cana Hwy, 0.625 mi e of Pine Creek. 45 Comment
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  UC843257  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along Feather River Highway); Feather River Highway 609 Comment
  CAS-BOT-BC135818  Allium jepsonii B. Castro 1993-7-13 487 Butte Ca 2.5 mi SSW of Big Bar Mtn, on gentle SSE-facing slope on the N side of USFS rd 22N84, on serpentine outcrop which extends for 0.2 mi along the road. 944 Comment
  CHSC101176  Allium membranaceum Matt Brown; Jamie Tuitele-Lewis 2005-6-3 Butte Northern High Sierra Nevada. East side of Cedar Creek and about 200 m uphill from it; 2.0 km northwest of Arch Rock Tunnel. UTM Zone 10: 4414000N, 636100E. 1280 Comment
  CHSC36949  Allium peninsulare P. D. Nelson 1979-4-25 Butte Ca 150 ft s of Bidwell Park Rd at Salmon Hole, ca 9 mi e of California State University Chico. Ca. 30 ft n of Big Chico Creek. 152 Comment
  CHSC40769  Allium peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC49704  Allium peninsulare var. peninsulare Vernon Oswald 1985-5-6 1744 Butte Concow Rd. 1.1 me sw of its jct. With Ponderosa Way. 853 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
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  UCD110029  Alnus rhombifolia John Steiner 1977-4-23 55 Butte S bank of Chico Creek at e end of Chico Canyon Road. 65 Comment
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  UC600597  Alopecurus aequalis E. B. Copeland August, 1930 10 Butte above Jonesville Jonesville 1650 Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC137939  Alopecurus saccatus Lowell Ahart 1982-5-30 3429 Butte Sierra Nevada. Peter Ahart Ranch, ca. 2.5 mile north and 1/8 mile east of Honcut. 50 Comment
  CAS-BOT-BC137943  Alopecurus saccatus Lowell Ahart 1980-5-4 2169 Butte Thermalito. 65 Comment
  CHSC8195  Alopecurus saccatus J. G. Moore 1969-4-18 27 Butte Table Mtn. 50 yds. w of Cherokee Rd., 2 mi. s of Oregon City turnoff. 381 Comment
  SACT000318  Alopecurus saccatus Annette Waters 1958-4-19 Butte in area which has recently been submerged and is now drying out, still wet. At edge of road in rocky alluvial soil. En route from Oroville to Chico, 2.6 miles southeast of junction with highway 99E Comment
  CHSC6638  Amaranthus M. MacArthur 1968-6-16 337 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CDA38787  Amaranthus albus L. Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  JEPS103452  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  SEINET8204407  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  UCD97225  Amaranthus hybridus T. Gantenbein 1999-8-11 PDR11 98787 Butte Richvale. Comment
  CHSC31525  Amaranthus retroflexus L. Ahart 1977-11-20 1585 Butte On dry soil near our garden. Peter Ahart Ranch, Honcut. 50 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
  CHSC45624  Ambrosia artemisiifolia Vernon H. Oswald 1987-9-7 3232 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. 45 Comment
  CDA34620  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. Comment
  CHSC26622  Ambrosia psilostachya M. P. Hayes 1977-9-24 120 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). 30 Comment
  CHSC30019  Amelanchier pallida L. Ahart 1980-5-19 2315 Butte South Fork of the Feather River. Ca. 1/9 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. Near bridge. 800 Comment
  CHSC19540  Ammannia coccinea F. T. Griggs 1974-8-8 143 Butte Growing in the Sacramento River between the Hamilton City bridge and the mouth of Big Chico Creek. Comment
  CHSC26653  Ammannia robusta M. S. Taylor 1977-11-10 1527 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butt Hwy, on n side of Nelson-West Rd in large drying creek, ca. 23 mi s of Chico. 30 Comment
  UCD102883  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  HSC32642  Amsinckia douglasiana Patricia Datzman 1974-4-20 27 Butte N end of Table Mtn., near Oroville 305 Comment
  UCD118945  Amsinckia eastwoodiae M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Cleark Creek Cemetary, ca. 1 mile E of Clark Road, ca. 7 miles SW of Paradise. 152 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
  RSA0090970  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC87444  Amsinckia lycopsoides R. D. Fischer 2004-3-29 78 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along old Hwy 32 road on bluffs above Humboldt Trail at park property fence line. 441 Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  CHSC37421  Amsinckia menziesii B. Castro 1982-4-21 18 Butte On banks of Singer Creek, ca.1 mi w of Hwy 99 off Haille Rd, ca. 12 mi n of Chico. 60 Comment
  NY622094  Amsinckia verna A. A. Heller 1913-3-9 10683 Butte Hills 2 miles North of Oroville Comment
  JEPS127066  Anagallis minima Lowell Ahart 2016-5-15 20832 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC641680  Andropogon glomeratus var. pumilus G. L. Stebbins Jr. 1939-7-5 2892 Butte 3 mi e Oroville 152 Comment
  CHSC109789  Andropogon virginicus var. virginicus Lowell Ahart 2012-10-20 18505 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC45871  Anethum graveolens Lowell Ahart 1979-9-8 2020 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCR231509  Angelica Anna M. Hurlbutt 2009-8-7 026 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  SBBG26817  Angelica breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  CAS-BOT-BC64799  Antennaria argentea V. Oswald; L. Ahart 1988-6-17 3396 Butte N side of the dam at Lost Creek Reservoir. 1005 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  SEINET10964553  Antirrhinum cornutum Mary Susan Taylor 1975-10-3 Taylor 937 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC1685  Antirrhinum vexillo-calyculatum subsp. intermedium E. Walker 1932-7-26 Butte Magalia Heights. 762 Comment
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  RSA193352  Apocynum androsaemifolium subsp. pumilum E. B. Copeland 1930-7-7 s.n. Butte Jonesville. 1650 Comment
  POM95063  Arabis breweri C. C. Bruce 1897-02 1945 Butte Little Chico Comment
  SEINET10448239  Arabis glabra Mary Susan Taylor 1979-5-4 Taylor 1993 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  UC600707  Arabis rectissima var. rectissima H. F. Copeland 1931-6-10 1518 Butte gulch draining into Colby Canyon Jonesville 1524 Comment
  CHSC87784  Arbutus menziesii Paul Maslin 2004-3-1 3 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610130E 4408290N. 365 Comment
  HSC73008  Arceuthobium campylopodum M. S. Taylor, L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, E side of Humbug Rd., 14 mi. NE of Stirling City 1738 Comment
  JEPS82738  Arceuthobium campylopodum Wayne Roderick 1983-7-23 Butte near old rr station Magalia Comment
  CHSC24702  Arctostaphylos J. R. Nelson 1976-3-1 5 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  CAS-BOT-BC38875  Arctostaphylos manzanita subsp. manzanita Saichi Kawahara 1968-5-4 390 Butte Paradise, James Ripley's property, Graham road. 640 Comment
  CAS-BOT-BC38565  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC38566  Arctostaphylos mewukka subsp. truei C. Hart Merriam 1928-10-15 s.n. Butte Bald Rock Rd., about 8 mi. n. of Bidwell Bar, Feather River. Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 Comment
  UC726236  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte on the Neal Road w Optimo Lodge (between Paradise and Magalia) Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  CAS-BOT-BC46720  Arctostaphylos patula M. S. Taylor 1974-3-3 71 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway to Paradise. 76 Comment
  SD108266  Arctostaphylos truei Walter Knight, Irja Knight 1981-5-25 4109 Butte 27 miles north of Chico; State Highway 32. 1064 Comment
  UCD51945  Arctostaphylos truei John Thomas Howell 1975-6-15 51091 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET2028706 Image available Arctostaphylos viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 niles north of Chico Comment
  UCD52620  Arctostaphylos viscida B. F. Smith 1971-7-20 95 Butte 3.2 miles north of Magalia, Butte County, California. 792 Comment
  CAS-BOT-BC48293  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51106 Butte Billie Road at Cliff Drive, Paradise 609 Comment
  UCD52826  Arctostaphylos viscida subsp. viscida J. I. Mallory 1968-7-1 296 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest. 640 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  SEINET11686323  Aristida ternipes var. gentilis Unknown 1983-1 4277 Butte along Hwy 32, ca 1 mi E of Chico 100 Comment
  CHSC49508  Aristida ternipes var. hamulosa Vernon Oswald 1985-6-10 1826 Butte Hwy 32 3.1 mi e of Hwy 99. 164 Comment
  CHSC3510  Aristolochia californica M. Gregg 1966-2-28 21 Butte Upper Bidwell Park at Salmon Hole. Comment
  CHSC47375  Aristolochia californica Lowell Ahart 1974-12-11 298 Butte Peter Ahart Ranch, about 1 mile north and 1-1/4 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  HSC86841  Aristolochia californica L. P. Branham 1975-4-3 6 Butte 10 m S of Humbug Rd., .2 mi. E of junction of Honey Run Rd. and Humbug Rd., 7 mi. SE of Chico 110 Comment
  CAS-BOT-BC295867  Arnica dealbata F. N. Bassett 1923-7-23 s.n. Butte Jonesville via Butte Meadows Comment
  SD5897  Arnica discoidea E. B. Copeland 1929-7-23 Butte Jonesville 1600 Comment
  CHSC20901  Artemisia douglasiana M. S. Taylor 1975-8-31 894 Butte Ca. 50 ft S of Humboldt Rd, on Ernies Island in Butte Creek, ca. 1/2 mi E of Butte Meadows. 609 Comment
  CHSC38322  Artemisia douglasiana Vernon H. Oswald 1983-8-19 1006 Butte Upper Bidwell Park, Chico, near the E end of Yahi Trail. 207 Comment
  CHSC43238  Artemisia douglasiana Lowell Ahart 1987-9-24 5894 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC99489  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte North side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 483 Comment
  SEINET10580359  Asclepias cordifolia Edwin B. Copel 1929-7-13 Copeland s.n. 1929 Butte Jonesville 1606 Comment
  CHSC25358  Aspidotis densa Marc P. Hayes 1977-4-22 8 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from junction with Hwy 70. 495 Comment
  UC1609394  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte ca. 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  UCD111116  Aspidotis densa Christopher Mallek 2008-1 HW3- 23 Butte Magalia. 756 Comment
  SEINET10872024  Aster chilensis var. medius Lowell Ahart 1985-10-12 Ahart 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. Comment
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CDA26731  Astragalus pauperculus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  UC1303131  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte in a field along the Pacific Highway 9 mi n Chico; n of Chico Comment
  CHSC25266  Asyneuma prenanthoides M. S. Taylor 1977-6-26 1370 Butte On s side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 731 Comment
  CAS-BOT-BC68690  Athyrium filix-femina var. californicum Lowell Ahart 1983-9-21 4461 Butte 3 miles north of the Sly Creek Dam, north of the Strawberry Valley, along a small stream which is called French Creek 900 Comment
  CAS-BOT-BC68697  Athyrium filix-femina var. californicum Javier Penalosa 1962-6-18 2445 Butte N. of Brush Creek on old Oroville-Quinney Road, near confluence of French and Peavine Creeks. 609 Comment
  CHSC38410  Athysanus pusillus Vernon Oswald 1983-2-14 76 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
  JEPS90672  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road and on s side of Rutherford Road, just e of headquarters complex, 1.75 mi w of Pennington Road); Gray Lodge Wildlife Management Area 19 Comment
  UCR88748  Atriplex heterosperma Lowell Ahart 1981-11-6 3221 Butte Sacramento Valley, Gray Lodge, c. 12 mi. SW of Gridley. Deep ditch on north side of road near entrance to waterfowl management area headquarters 35 Comment
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  CHSC34050  Atriplex serenana L. Ahart 1981-7-26 3007 Butte Along edge of dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that lead to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  JEPS90628  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
  CHSC37086  Atriplex triangularis L. Ahart; M. S. Taylor 1982-10-11 3855 Butte On the sides of a deep ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi s wof Gridley. 35 Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 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
  JEPS115991  Avena fatua Lowell Ahart 2009-5-8 15665 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
  JEPS117709  Avena fatua Lowell Ahart 2010-5-7 16629 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 246 Comment
  JEPS122266  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC108318  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  JEPS115152  Baccharis pilularis Lowell Ahart 2009-11-19 16544 Butte About 30 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 209 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC57396  Baccharis salicifolia subsp. salicifolia H. E. Brown 1896-10-2 120 Butte near Oroville 53 Comment
  UCD19369  Bacopa rotundifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 860 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  POM38875  Balsamorhiza deltoidea C. C. Bruce 1897-04 1998 Butte [No locality information provided] Comment
  CAS-BOT-BC16576  Barbarea orthoceras H. F. Copeland 1920-7-11 57 Butte Scotch John Meadows. 1828 Comment
  CHSC30034  Barbarea orthoceras L. Ahart 1980-5-19 2314 Butte Along the edges of the South Fork of the Feather River, near bridge, ca. 1/8 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. 800 Comment
  CHSC3586  Bellis perennis Susan Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  CHSC109109  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-3 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8-1/2 miles northeast of Chico. 387 Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  CAS-BOT-BC75546  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 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. Comment
  CAS-BOT-BC102068  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Along French Creek 1300 Comment
  CHSC44047  Bistorta bistortoides L. P. Janeway 1987-6-27 2349 Butte Open alder-fringed mdw just east of Keyser Cr, 4.3 mi north of Ramsey Bar along the Concow Rd. 1478 Comment
  SEINET10474476  Blennosperma nanum Mary Susan Taylor 1973-1 Taylor 62 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD114121  Boechera arcuata Robert E. Preston 1985-4-4 509 Butte Bear Ranch Creek, south of Hwy 70, along trail between hwy and falls. 463 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
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  UCD150349  Bolboschoenus fluviatilis E. Littrell 1972-4-27 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC43059  Boykinia major L. P. Janeway 1987-6-19 2235 Butte Along Sly Creek; 2.1 mi from the Challenge-La Porte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC48890  Boykinia major Vernon Oswald 1985-7-21 1910 Butte Near the bridge over the W. Branch of the Feather R., ca. 1 air mi ne of Inskeep. 1341 Comment
  SEINET10483033  Boykinia major Mary Susan Taylor 1982-8-16 Taylor 5018 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
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  JEPS103476  Brachypodium distachyon Lowell Ahart 2002-5-7 9634 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
  JEPS127606  Brachypodium distachyon L. P. Janeway 2015-4-13 11664 Butte Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road km Ne of Flea Valley Creek and Pulga. Comment
  SEINET10507663  Brachypodium distachyon Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4062 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC38046  Brassica rapa R. E. Preston 1983-1-9 376 Butte In ditch on w side of Aguas Frias Rd, 1.2 mi n of Ritchvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CHSC38412  Brassica rapa Vernon Oswald 1983-2-16 82 Butte Upper Bidwell Park, Chico, 50 ft s of Upper Park Rd. near Bare Hole (1.0 mi e of the power lines). 121 Comment
  CAS-BOT-BC36720  Brassica rapa Lowell Ahart 1974-5-12 s.n. Butte About 0.5 mile east of Honcut. 150 Comment
  CAS-BOT-BC106320  Brickellia californica Lowell Ahart 1980-9-10 2631 Butte 1 mile north-east of Milsap Bar - Sierra Nevada 900 Comment
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET10967591  Briza minor Orme 1980-4-9 Orme 19 Butte Large population, T22N R2E NW1/4 of Sec. 17. 0.8 km on main road through upper Bidwell Park. 1.6 km N of Chico. Found on the edge of a open, rocky field. Soil a loam to sandy loam. 64 Comment
  CAS-BOT-BC482217  Brodiaea californica subsp. californica A. A. Heller 1914-5-11 11389 Butte Hills 8 miles north Oroville Comment
  UC143052  Brodiaea coronaria Mrs. R. M. Austin May 1896 27 Butte Iron Canyon Comment
  SEINET10533776  Brodiaea coronaria A. Arthur Heller, H. E. Brown 1902-5-8 Heller s.n. 1902 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC21147  Brodiaea elegans M. S. Taylor 1975-6-30 819 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Green wood Store, Cohasset. 853 Comment
  CHSC38765  Brodiaea elegans Vernon Oswald 1983-5-21 511 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft w of the power lines. 231 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
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  CHSC86429  Brodiaea sierrae Jenny Marr 1994-6-13 90 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC486485  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET3441874  Bromus arvensis Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte Chico, Chico, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue 120 Comment
  CAS-BOT-BC149548  Bromus carinatus var. carinatus John Thomas Howell 1967-6-22 42629 Butte Sierra Nevada. Magalia. 701 Comment
  CAS-BOT-BC156071  Bromus diandrus John Thomas Howell 1962-6-15 37535 Butte Sierra Nevada. Magalia. 731 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
  SEINET6778864  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  JEPS119865  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC87898  Bromus laevipes Lowell Ahart 2004-6-2 10988 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
  CHSC95228  Bromus laevipes L. P. Janeway 2006-8-6 8829 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS110320  Bromus orcuttianus Lowell Ahart 2006-7-25 13054 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
  UC600593  Bromus orcuttianus E. B. Copeland July 1929 Butte Jonesville Comment
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC161503  Bromus tectorum Javier Penalosa 1962-6-18 2463 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CDA1860  Bromus tectorum L. Ahart 2003-5-9 10120 Butte South side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC18156  Bulbostylis capillaris Lowell Ahart 1980-7-20 2475 Butte At Little Bald Rock. 1100 Comment
  CAS-BOT-BC185473  Calamagrostis canadensis Lowell Ahart 1987-10-17 5917 Butte Along the East Fork of the Last Chance Creek, about 0.5 mile northwest of Jones Meadow. 1676 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 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
  SEINET10906553  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 Ahart 4595 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  JEPS122232  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC27198  Calocedrus decurrens P. Moyer 1971-10-2 27 Butte N side Ed.-Psych. Bldg. On CSUC campus. 60 Comment
  CHSC3348  Calocedrus decurrens Robert L. Smith 1966-4-23 18 Butte Bull Run Rd. 5 miles W of Butte Meadows. Comment
  CHSC59485  Calocedrus decurrens Michael Deal 1992-4-19 4 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  NY43613  Calocedrus decurrens S. Bianco 1995-11-9 1051 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
  SEINET10531075  Calocedrus decurrens Locey 1975-5-6 LOCEY 22 Butte 10 yds s of Fitzgerald Road and 50 yds e of Highway 32, at Forest Ranch. Woodland. Elevation 2357 feet. 717 Comment
  CHSC29726  Calochortus albus J. D. Jokerst 1980-4-17 585 Butte Top of North Table Mt, northern tip. 472 Comment
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  CHSC46427  Calochortus luteus Lowell Ahart 1989-5-28 6298 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC57549  Calochortus monophyllus Suzanne Hermansen 1991-4-20 25 Butte ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  SEINET7067153  Calochortus monophyllus A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  UC3375  Calochortus monophyllus Carl Purdy 1821-1 Butte Chico Comment
  CHSC101167  Calochortus superbus Lowell Ahart 2009-5-15 15680 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. 235 Comment
  CAS-BOT-BC493341  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC494348  Calochortus tolmiei Lowell Ahart 1988-3-27 5941 Butte On dry rocky red soil, on a deep road cut along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  CHSC83427  Caltha leptosepala var. biflora L. P. Janeway 2002-5-26 7564 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  UC1971740  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca. 10 mi NW of Chico and ca. 1/2 mi S of Broyles Road Comment
  CHSC46912  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 145 Butte Peter Ahart Ranch, ca. 1 1/2 mi N and 2 1/4 mi E of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC106096  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CAS-BOT-BC106122  Calycadenia oppositifolia Lowell Ahart 1988-7-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor 304 Comment
  CAS-BOT-BC106124  Calycadenia oppositifolia Lowell Ahart 1985-5-15 4979 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CAS-BOT-BC123537  Calycadenia oppositifolia Charles Christopher Parry 1882-1-1 s.n. Butte Chico Comment
  CHSC108165  Calycadenia oppositifolia L. P. Janeway 2011-8-17 10657 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  CDA10583  Calycadenia truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge 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. Comment
  RSA699697  Calycadenia truncata subsp. truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CAS-BOT-BC275380  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  UC1126248  Calycanthus occidentalis J. E. Sowder 1933-8-4 129 Butte above de Sable Power House; Chico Quad. 609 Comment
  CHSC9702  Calyptridium monospermum Nancy Mosman 1971-7-3 61 Butte In meadow along Hwy 32 ca. 0.3 mi n of Butte Meadow Ranger Station. 1371 Comment
  CHSC37266  Calyptridium umbellatum L. Ahart 1982-6-15 3559 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC95077  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km north of De Sabla Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek and Hendricks Canal. Along edge of the canal bank. 847 Comment
  CHSC27918  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1978-7-19 1728 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  UC600772  Calystegia occidentalis subsp. occidentalis H. F. Copeland 1930-7-18 1390 Butte Jonesville Comment
  CHSC20350  Calystegia occidentalis subsp. occidentalis L. V. Ritter 1969-5-5 306 Butte Ca. 2 mi. W of Cohasset, ca 10 yds. S of Cohasset Highway. Comment
  UC478483  Calystegia occidentalis var. tomentella E. B. Copeland 1931-7-4 674 Butte Jonesville 1550 Comment
  CHSC42811  Camassia quamash subsp. quamash L. P. Janeway 1987-6-27 2362 Butte Large mdw on east slope of Bald Mtn, along the Concow Rd. 1706 Comment
  UC1609310  Campanula prenanthoides Lowell Ahart 1993-9-13 7235 Butte on sides of dry wash near Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  SEINET10463037  Campanula prenanthoides C. A. Purpus Purpus 5656 Butte Wet meadows, Farewll Gap 1219 Comment
  CDA1336  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte Sacramento River East bank overflow area; northwest of Parrott Landing, 1 mile southeast of Ord Ferry. Comment
  CHSC103660  Capsella bursa-pastoris Lowell Ahart 2010-2-13 16567 Butte Corral west of metal barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC10793  Capsella bursa-pastoris Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  JEPS119515  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte About 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  POM196064  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  UC600711  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville 1524 Comment
  UCD114500  Cardamine californica R. E. Preston 1981-2-28 45 Butte 50 m east of Coutelenc Road, 300 m north of its junction with The Skyway, Magalia. 700 Comment
  CHSC35999  Cardamine nuttallii var. covilleana R. E. Preston 1982-7-1 322 Butte Margins of meadow; ca. 4 mi e of Jonesville. 1950 Comment
  CAS-BOT-BC37874  Cardamine oligosperma Peter H. Raven 1954-4-17 6614 Butte Along Feather River, Oroville. Comment
  CHSC28904  Cardamine oligosperma M. S. Taylor 1980-3-1 2341 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC38050  Cardamine oligosperma R. E. Preston 1983-2-7 379 Butte N side of McCabe's Creek. 371 Comment
  JEPS105938  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville 502 Comment
  SBBG128032  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte parking area, Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville 33 Comment
  SEINET10448555  Cardamine oligosperma Mary Susan Taylor 1981-3-16 Taylor 3414 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET8370186  Cardamine oligosperma John Dittes, Josephine Guardino 1991-4-19 338 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 airmiles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee, ca. 3.8 air-mile east of intersection of State Hwy 99 and State Hwy 149. 366 Comment
  CAS-BOT-BC38062  Cardamine pachystigma A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  CHSC28643  Cardamine pachystigma M. S. Taylor 1979-3-31 1970 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC31095  Cardamine pachystigma Leslie Steidl 1980-3-15 2 Butte Ca. .9 mi nw of Lumpkin Rd. on Island Bar Hill Rd and 4 ft s of Island Bar Hill Rd, 22 mi ene of Oroville. 719 Comment
  CHSC32739  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-4-14 3534 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 914 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC103975  Carduus pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC54088  Carduus pycnocephalus Vernon H. Oswald; Lowell Ahart 1991-5-13 4587 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  SEINET10585935  Carex abrupta Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3020 Butte The Carices of Butte county. T26N, R5E, Jonesville quad (15") NW1/4 of sec 21. Along Willow Cr, 1 mile W of Humbug Rd. On dry disturbed forest floor (Jeffery pine and white fir). With C. integra, C. fracta, C, jepsonii. 1798 Comment
  CHSC44839  Carex amplifolia L. P. Janeway; R. A. Schlising 1988-8-2 3154 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground. 1143 Comment
  SEINET7468090 Image available Carex amplifolia Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11399 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn 1535 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
  UC478554  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville 1550 Comment
  SEINET7550706 Image available Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the "Lily Pond". 1700 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  CHSC43913  Carex barbarae L. P. Janeway 1987-5-7 2027 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. Adj to mdw and Rubus riparian area at penstock. 160 Comment
  CHSC86862  Carex barbarae L. P. Janeway; Gavin Blosser 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. 305 Comment
  CHSC102594  Carex bolanderi L. P. Janeway; B. Castro 2009-7-4 9835 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary of North Fork Feather River). 823 Comment
  CHSC99375  Carex bolanderi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10522 Butte Ca. 2.5 mi NE of village of Butte Meadows, along E side of Butte Creek, downslope from (W of) Humboldt Road. 1396 Comment
  CAS-BOT-BC19604  Carex brainerdii L. P. Janeway 1987-6-26 2300 Butte On Granite Ridge. Along Concow Road 2.0 miles north of Rag Dump. 1295 Comment
  CHSC100989  Carex brainerdii L. P. Janeway 2006-5-28 8646 Butte Northern High Sierra Nevada. 0.2 km east of Concow Road, 1.24 km north-northeast of Rag Dump, 4.3 km north of Flea Mountain. 1268 Comment
  CHSC48541  Carex brainerdii L. P. Janeway 1987-5-28 2116 Butte Bank along 4 Trees Rd just N of Coyote Gap. 1310 Comment
  CAS-BOT-BC422334  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-knothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands (n SNH) 1000 Comment
  HSC104258  Carex cyrtostachya L. Ahart 1998-7-19 8052 Butte About 0.5 mi. NW of the Lost Creek Reservoir, ~0.75 mi. NW of the Lost Creek Dam 1021 Comment
  CHSC43950  Carex densa Vernon Oswald 1988-5-19 3322 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. 45 Comment
  CHSC69651  Carex densa James D. Jokerst 1988-4-21 2999 Butte Parrot (Blakely-Swartz) Ranch S of Chico. Comment
  SEINET7556724 Image available Carex densa Unknown 2003-5-8 7780 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CDA43058  Carex divulsa L. P. Janeway 2010-6-3 9989 Butte Sacramento Valley.; Oroville: Centennial Plaza on top of the levee along the south side of Feather River between the north ends of Lincoln Street and Oak Street. Comment
  CHSC47062  Carex feta L. P. Janeway 1989-5-17 3246 Butte High in cyn of S Fk Feather River; along edge of road to Forbestown Diversion Dam 1.4 mi E of Forbestown Rd. 853 Comment
  CHSC53709  Carex feta L. P. Janeway 1987-5-20 2077 Butte Soggy drainage along Hwy 70 2.1 mi NE of Pulga bridge, near Heinz Creek. 457 Comment
  JEPS105635  Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  UCR7833  Carex feta Marilyn Malin 1968-4-19 246 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  SEINET4292216 Image available Carex fracta Unknown 2006-1 13068 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  SEINET7559907 Image available Carex globosa John Thomas Howell 1967-6-22 42605 Butte Magalia. 701 Comment
  CHSC110987  Carex gracilior Lowell Ahart 2012-5-17 18085 Butte On both sides of the horse trail, 10 to 50 feet north of the poor dirt road, about 100 feet south of Larch, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 73 Comment
  JEPS121960  Carex heteroneura Lowell Ahart 2014-7-7 19574 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC1748322  Carex heteroneura L. P. Janeway 1995-8-5 4891 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  SEINET7561559 Image available Carex hirtissima Lowell Ahart 1985-6-30 5078 Butte Near road to Forbestown Res. East of the dirt road to the Forbestown Res, about 2 1/2 miles north-east of Forbestown. 869 Comment
  CHSC76846  Carex laeviculmis L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio. 1997-6-13 5138 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
  UC1133395  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se of Butte Meadows (Lassen National Forest); Lassen National Forest 1554 Comment
  SEINET12649529 Image available Carex leavenworthii Lowell Ahart 2012-1 18190 Butte 62 Comment
  CHSC61341  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte Edge of a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CAS-BOT-BC32152  Carex multicaulis Lowell Ahart 1980-5-29 2361 Butte 2.5 mi NE of Mountain House. 1100 Comment
  UC184078  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte near Stirling 1036 Comment
  HSC87068  Carex multicaulis L. P. Janeway, R. A. Schlising, B. Castro 1987-4-4 1969 Butte Paradise Lake, SE shore 686 Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  UC1609338  Carex nudata Lowell Ahart 1993-4-8 6931 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CHSC105506  Carex pachycarpa Lowell Ahart 2010-9-21 17201 Butte Under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  JEPS120127  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 Comment
  SEINET12649898 Image available Carex subbracteata L. P. Janeway 2011-1 10229 Butte 57 Comment
  CHSC28565  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On s side of Oroville-Quincy Hwy along creek in a meadow, ca. 14 mi n of Lake Madrone. 548 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC83190  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  OBI20285  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  RSA0080127  Carex texensis Lowell Ahart 2012-6-14 18182 Butte Chico. At the entrance to Lower Bidwell Park, east of Woodland Avenue. 61 Comment
  CAS-BOT-BC115304  Carex utriculata L. P. Janeway 1987-7-5 2460 Butte Open dryish meadow near Dresser Camp, 3.0 mi N of Jones Meadow, 1889 Comment
  CHSC25333  Carex vesicaria M. P. Hayes; Warner 1977-8-14 40 Butte Marshy meadow along Butte Creek, 10 mi n of turn to Butte Meadows along Highway 32. 1280 Comment
  UC1594543  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow) 1737 Comment
  SEINET10946139  Carex vulpinoidea Vernon H. Oswald, Lowell Ahart 1990-5-26 Oswald 4254 Butte T18N R3E ne/ne/S3, Freshwater Marsh in Riparian Woodland. Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Densely cespitose sedge on wet, sandy soil bordering a dredge pond. 32 Comment
  CHSC75551  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CHSC6052  Castanea dentata M. MacArthur 1968-6-22 285 Butte Ca. 20 ft. SE of Bld. D along So-Will-lin-no st., Chico State College. 60 Comment
  CHSC46408  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC38684  Castilleja affinis subsp. affinis Vernon Oswald 1982-12-28 36 Butte Upper Bidwell Park, Chico, just below the north rim ca. 400 ft e of the power lines. 237 Comment
  CAS-BOT-BC249589  Castilleja applegatei subsp. pinetorum Clarence R. Quick 1964-7-9 64 -58 Butte North of Jarbo Gap Comment
  CHSC44355  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 a Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  CHSC77446  Castilleja applegatei subsp. pinetorum Laura Bogni 1997-4-5 14 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Swamill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  JEPS3294  Castilleja applegatei subsp. pinetorum L. Heckard and J. R. Sweeney 1953-4-27 345 a Butte 23 mi ne Oroville (Feather River canyon highway) 548 Comment
  UC580770  Castilleja applegatei subsp. pinetorum P. L. Johannsen 1936-7-17 933 Butte 2.5 mi se Butte Meadow; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UCD122338  Castilleja attenuata M. Vincent 1965-4-16 635 Butte Pentz rd. 1/2 mile south of Pentz store. Comment
  CHSC43166  Castilleja exserta Don Kroessig 1979-4-16 1 Butte On W side of Bruce Road 1.1 mile n of intersection with the Skyway. 76 Comment
  CHSC114983  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC43193  Castilleja lacera R. A. Schlising 1981-4-27 4042 Butte S of Cohasset. Immediate roadside of Cohasset hwy, 2.9 mi NE jct with road to Richardson Springs. 201 Comment
  SD60187  Castilleja rubicundula subsp. rubicundula A. A. Heller 1927-5-7 14365 Butte along the Paradise grade above Clear Creek, the type station where I collected in 1902 Comment
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Jun 11 2015
  POM43182  Castilleja subinclusa C. C. Bruce 1897-05 1939 Butte Little Chico. Comment
  CAS-BOT-BC48817  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC49179  Ceanothus cuneatus Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC32656  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte Shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC32664  Ceanothus cuneatus M. S. Taylor; D. Hemphill 1981-3-18 3431 Butte Open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 701 Comment
  JEPS34380  Ceanothus integerrimus Rimo Bacigalupi and L. R. Heckard 1963-5-14 8856 Butte ca 1 mi below and w Paradise (along Honey Run Rd) Comment
  RSA399894  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  RSA15055  Ceanothus integerrimus var. macrothyrsus Daniel Cleveland 1882-07 s.n. Butte Sultant House. Comment
  CHSC30308  Ceanothus lemmonii M. S. Taylor 1980-5-27 2736 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of Big Bald Rock, ca. 4 mi e of Lake Madrone. 975 Comment
  UC1602380  Ceanothus lemmonii C. G. Albertus 1933-7-20 45 Butte 2.5 mi w Nimshew; Chico quad. 701 Comment
  SEINET10493642  Ceanothus lemmonii Mary Susan Taylor 1980-5-27 Taylor 2736 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 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
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  RSA107845  Ceanothus prostratus L. S. Rose 1955-6-14 55098 Butte De Sabia. 732 Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  UC2026862  Celtis sinensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18231 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10473682  Centaurea cyanus Mary Susan Taylor Taylor 828 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC32681  Centaurea melitensis M. S. Taylor 1981-3-24 3447 Butte S side of Hwy 70, in turn out just e of Poe Dam, ca. 1 mi e of Pulga, in turn out. 487 Comment
  UCD80047  Centaurea melitensis CNPS SN Foothill Team 2005-5-24 SNFN 0172 a Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico creek, about 75 m from the canyon rim. 338 Comment
  CDA7276  Centaurea melitensis L. Ahart 2000-5-31 8414 Butte About 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. Comment
  CHSC295  Centaurea solstitialis E. Walker 1932-6-21 Butte Durham. Comment
  UCR188716  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  JEPS115181  Centaurium muehlenbergii Lowell Ahart 2009-6-30 15977 Butte On dry soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  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
  CAS-BOT-BC288525  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CHSC61005  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 air miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  SEINET10470077  Cephalanthera austiniae Mary Susan Taylor 1982-6-24 Taylor 4746 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  RSA0035326  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC211  Cerastium glomeratum S. Carter 1929-4-23 Butte Chico. 60 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  UC203620  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte low hills 8 mi. n. Oroville Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  SD234126  Cercis occidentalis Virginia Pinkus Ryder 1965-4-3 350 Butte Paradise 456 Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CAS-BOT-BC137002  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CAS-BOT-BC137004  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CHSC40326  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Red., about 2 miles south of Paradise. 550 Comment
  CHSC78097  Cercocarpus betuloides var. betuloides Megan Lee Hudzik 1998-4-21 26 Butte 1 mile n of Cohasset on the side of Cohasset Road. 914 Comment
  CHSC3023  Chamaecyparis lawsoniana Carl Pejsa 1958-4-19 28 Butte Bidwell Park Forestry Station. Comment
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Jul 25 2018
  CHSC52638  Chamaesyce hooveri R. D. Stone; R. E. Buck 1987-8-3 831 Butte Central Valley. Vina Plains, 2.3 miles SSW of the intersection of Highway 99 and Rowles Road, 0.2 miles S of the Butte-Tehama county line, E side of Southern Pacific railroad grade. Vernal pool. 51 Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CHSC37373  Chamaesyce ocellata R. A. Schlising 1981-9-20 4196 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  CHSC113132  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-18 19275 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 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC31677  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 1975-7-5 851 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  UC1563272  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte 1/2 mi W of Gold Flat (Lake Oroville, about 1 mi N of Nelson Bar Road) 213 Comment
  CHSC30724  Cheilanthes gracillima M. S. Taylor 1980-5-27 2709 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC42506  Cheilanthes gracillima Lowell Ahart 1987-5-22 5677 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET10529915  Cheilanthes gracillima Mary Susan Taylor 1983-1-17 Taylor 5214 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC34046  Chenopodium album L. Ahart 1981-7-26 3004 Butte On the sides of a large deep ditch near the dirt road, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  RSA746977  Chenopodium album var. missouriense George K. Helmkamp, E. Helmkamp 2007-10-7 13065 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  JEPS103449  Chenopodium pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UC204577  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte 8 mi n Oroville Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  CHSC49527  Chloris virgata Vernon Oswald 1983-7-3 799 Butte Located at the n-e corner of Calif. Hwy 32 and W. Lindo Ave. in Chico. Roadside, along edge of almond orchard. Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 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
  JEPS119767  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  SEINET10479751  Chorizanthe membranacea Lowell Ahart 1984-6-8 Ahart 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC27930  Chorizanthe polygonoides var. polygonoides M. S. Taylor; J. T. Howell 1975-4-26 510 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  CAS-BOT-BC252833  Chorizanthe polygonoides var. polygonoides M. S. Taylor 1975-4-26 510 Butte Ca. 500 yds E of Pentz-Magalia Hwy., ca. 1 mi. SE of Paradise 609 Comment
  SEINET10473689  Chrysanthemum leucanthemum Mary Susan Taylor 1982-8-16 Taylor 4993 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  SEINET10475261  Chrysothamnus nauseosus subsp. albicaulis Mary Susan Taylor 1979-10-13 Taylor 2261 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  JEPS106001  Cicendia quadrangularis Lowell Ahart 2004-4-4 10714 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  UC1122351  Circaea alpina subsp. pacifica P. L. Johannsen 1936-7-17 942 Butte 3 mi. s.e. Butte Meadows; Lassen Nat'l Forest, Paynes Creek Quad. Comment
  SEINET10453137  Circaea alpina subsp. pacifica Mary Susan Taylor 1978-7-21 Taylor 1817 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
  SD5925  Cirsium andersonii E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  RSA0070561  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CAS-BOT-BC278081  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  CAS-BOT-BC288039  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CHSC38338  Cirsium vulgare Vernon Oswald 1982-12-17 22 Butte Bidwell Park, Chico, 400 ft nw of the parking lot at Diversion Dam. 134 Comment
  CHSC3521  Clarkia arcuata John Francis 1966-4-16 118 Butte On hillside S. of covered bridge (Honey Run). 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
  CHSC48623  Clarkia biloba subsp. brandegeeae Vernon Oswald 1985-5-28 1782 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. On the road cut. 304 Comment
  LA205996  Clarkia biloba subsp. brandegeeae H. Lewis; M. Lewis 1947-6-11 394 Butte 7.0 mi. NW of Bangor on the road to Oroville Comment
  CAS-BOT-BC164132  Clarkia concinna A. A. Heller 1938-5-28 15114 Butte Along Highway #24, 22 miles east of Oroville Comment
  CAS-BOT-BC164136  Clarkia concinna Lowell Ahart 1987-5-9 5602 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga 365 Comment
  CHSC35134  Clarkia concinna subsp. concinna R. Schlising; R. Banchero 1980-6-6 3647 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC39035  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 25 miles north-east of Oroville and 2 miles east of Milsap Bar on Middle Fork of the Feather River; at roadside. 1000 Comment
  CHSC71141  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. West-facing road cutbank. 902 Comment
  CHSC70734  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1995-7-16 4858 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  CAS-BOT-BC163858  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1972-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC84866  Clarkia purpurea subsp. quadrivulnera L. P. Janeway 2003-5-24 7796 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. 82 Comment
  RSA31284  Clarkia purpurea subsp. quadrivulnera H. C. Cantelow 1940-5-10 s.n. Butte 8.5 miles SW of Oroville, Highway 24 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  CHSC64118  Clarkia rhomboidea L. P. Janeway; Jean Hubbel, Dave Wood 1994-6-3 4655 Butte Forest Ranch; 0.5 mi east of Hwy 32 on Nopel Avenue and Cody Lane. Along side of dirt road. 725 Comment
  UC1143258  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 758 Butte 0.8 mi s Arch Rock (Hwy. 24); Feather River Comment
  UC1730247  Clarkia rhomboidea L. P. Janeway 1993-5-30 4362 Butte 1 mi N of Magalia (along Ponderosa Way 0.35 mi NE of Coutolenc Road) 670 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  JEPS109961  Claytonia palustris Dean W. Taylor 2006-9-20 19644 Butte Coon Hollow; Coon Hollow Creek at confluence with West Branch Feather River 1615 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
  SFV1151  Claytonia palustris J. R. Swanson 1959-6-13 477 Butte Jonesville. Along margins of Jones Creek. 1677 Comment
  CHSC34765  Claytonia parviflora subsp. parviflora S. M. Turek 1980-4-21 19 Butte Ca. 5 yds s of Humboldt Rd, 1.7 mi e of E. Monte Rd, 50 yds s of Hwy 32, 1 mi e of Chico. 71 Comment
  JEPS107415  Claytonia parviflora subsp. parviflora Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  SEINET10572709  Claytonia perfoliata Mary Susan Taylor 1973-1 Taylor 45 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 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
  SEINET10572737  Claytonia rubra Mary Susan Taylor 1982-6-24 Taylor 4741 A Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  SEINET10830265  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3432 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC33589  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-28 3564 Butte N side of rd 23N28.2 in loop of 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
  CHSC56078  Claytonia rubra subsp. rubra L. P. Janeway; C. A. Janeway 1987-4-20 2006 Butte Near Hwy 32, between the road into Soda Springs Campground and Chico Creek. 1143 Comment
  UC1876148  Clematis lasiantha T. A. Ranker and P. G. Trapp 1994-6-17 1613 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  CAS-BOT-BC238019  Collinsia Jim Riley 1923-4-2 s.n. Butte Richardson Springs Comment
  CHSC33340  Collinsia parviflora R. Banchero 1980-6-26 270 Butte 3.2 mi se of the jct of Humbolt Rd and Skyway Rd along Bull Hill Rd. 2.5 mi n of the jct of Skyway and Bull Hill Rd. 1524 Comment
  UC103369  Collinsia parviflora Mrs. R. M. Austin May 1896 258 Butte Little Chico Creek 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
  CHSC11083  Collinsia sparsiflora var. collina Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC39941  Collinsia sparsiflora var. collina Lowell Ahart 1984-4-3 4537 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  UC1012166  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25680 Butte 2 mi up along Feather River above Oroville (Route 24); Feather River, Route 24 609 Comment
  SEINET12331824  Collinsia tinctoria Unknown 1985-1 4977 Butte W of Lunt Rd, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC64452  Collomia grandiflora B. Castro; L. P. Janeway 1994-7-6 524 Butte Ca 4 air mi NE of Feather Falls (the falls), at N edge of USFS Rd 21N92 as it contours around S-facing head of drainage basin. 1188 Comment
  SEINET10496933  Collomia grandiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4747 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC43702  Collomia tinctoria Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  CHSC93968  Collomia tinctoria R. D. Fischer 2004-6-20 749 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  UC478478  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte on gravel bars along creek Jonesville, Butte Creek 1500 Comment
  CHSC94107  Comandra umbellata subsp. californica Lowell Ahart 2006-7-11 12940 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC440  Convolvulus arvensis E. Lusk 1949-5-30 Butte Lindo Channel near Chico. 57 Comment
  UCD138901  Corallorhiza striata Kenneth D. Stewart 1965-7-15 s.n. Butte along State Highway 32, around 20 miles north of Forest Ranch. Comment
  CHSC6030  Cornus alternifolia M. MacArthur 1968-6-19 230 Butte SE side Big Chico Creek near PSA bld. bridge, Chico State College. 60 Comment
  CHSC27211  Cornus florida var. rubra P. Moyer 1972-5-1 224 Butte CSUC Campus. N side Chico Creek, e side entrance Gus Magnolis Bridge. 60 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 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
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  CHSC100488  Cotoneaster pannosus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CHSC90952  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS87192  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  CHSC46739  Crassula saginoides Lowell Ahart 1974-4-11 393 Butte Peter Ahart Ranch, about 2 miles north and 1 1/2 mile north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET516423  Crassula saginoides Lowell Ahart 1974-1 394 Butte Normal size plants, growing on damp soil on the bottom of a small vernal pool, peter Ahart Ranch, about 1 1/2 mi. N and 2 mi. E of Honcut, about 12 mi S of Oroville. 46 Comment
  JEPS119698  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CAS-BOT-BC427953  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 Comment
  HSC66350  Crassula tillaea M. S. Taylor 1979-3-31 1972 .5 Butte Junction of Pentz-Magalia Rd. and Pentz Rd., SE corner, 1/4 mi. W of Hwy. 70, 22 mi. N of Oroville 198 Comment
  SEINET10973378  Crassula tillaea Mary Susan Taylor 1978-4-14 Taylor 1554 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC108759  Crataegus monogyna L. P. Janeway 2011-4-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. 98 Comment
  CHSC66356  Croton setiger Vernon H. Oswald 1996-6-20 7824 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Marsh at the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC101152  Crucianella angustifolia Lowell Ahart 2009-5-15 15706 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC116986  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  JEPS80687  Crucianella angustifolia L. R. Heckard and T. I. Chuang 1981-6-11 5538 Butte ca 12 air mi e Oroville (along Forbestown Road 0.5 mi w of Lumpkin Road junction) 609 Comment
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Dec 21 2012
  SEINET10500613  Crucianella angustifolia Lowell Ahart 1984-6-8 Ahart 4681 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
  CAS-BOT-BC190088  Crypsis schoenoides Lowell Ahart 1984-8-19 4788 Butte North of the state burrow area, west of Pacific Hieghts Road, about 5 miles southwest of Oroville. 40 Comment
  CHSC28737  Crypsis schoenoides R. A. Schlising 1979-10-13 3500 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park; margin of river. Comment
  JEPS108962  Crypsis schoenoides Lowell Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC1100332  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET10518369  Crypsis schoenoides Lowell Ahart 1986-11-9 Ahart 5435 Butte On dry red rocky disturbed soil, below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 270 Comment
  CHSC41973  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CAS-BOT-BC189239  Cryptantha John Thomas Howell 1967-6-22 42615 Butte Magalia 701 Comment
  CAS-BOT-BC182418  Cryptantha John Thomas Howell; H. Keith Wagnon 1980-5-26 53576 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  SBBG127995  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte S side of a poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  CHSC103215  Cryptantha crinita Paul Kirk 2010-5-25 102 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  UC196286  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  SEINET10497606  Cryptantha hendersonii Lowell Ahart 1984-6-8 Ahart 4677 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC109229  Cryptantha milobakeri Robert Fischer 2012-6-17 1064 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  UC1594526  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte ca. 1/2 mi n Carr Mine (ca. 2 air mi s of Snow Mt, s side of Coon Hollow) 1737 Comment
  CHSC77413  Cupressus macnabiana Laura Bogni 1997-3-25 2 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  RSA17598  Cupressus macnabiana C. B. Wolf, E. R. Johnson 1934-10-5 6160 Butte Magalia, Sierra Foothills 701 Comment
  CDA42920  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte On the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Central House Road, about 2 miles (air) northwest of Honcut. Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC78508  Cuscuta pentagona Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA755340  Cuscuta pentagona L. Ahart 2009-8-13 16270 Butte At the southeast side of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  UC1609322  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte ca. 1/2 mi. n. of & on s. side of dirt rd. that leads to Ramsey Bar 1371 Comment
  CHSC42657  Cymopterus terebinthinus var. californicus Vernon Oswald 1983-7-6 816 Butte Near Humboldt Rd. (to Butte Meadows) 2.0 mi n-e of its jct. with Calif. Hwy. 32. 1386 Comment
  CHSC3916  Cynoglossum grande Wayne O. Baum 1967-3-24 22 Butte Ca 8 mi. e. of the Skyway and Humbug Rd. intersection, on the s. side of Humbug Rd. 365 Comment
  CHSC78065  Cynoglossum grande Caleb E. Casey 1999-3-4 Butte Upper Bidwell park, below bluffs on south side over Bear Hole. 30 Comment
  CHSC92558  Cynoglossum grande L. P. Janeway 2005-4-25 8367 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope of side drainage of Flea Valley Creek 180 m northeast of junction of Concow Road and Rim Road (Ponderosa Way). 951 Comment
  CDA13838  Cyperus bipartitus G. F. Hrusa, T. D. Wilfred 1996-9-5 13566 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  CHSC78545  Cyperus bipartitus Lowell Ahart 2000-8-23 8663 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
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  CHSC76850  Cyperus difformis L. P. Janeway 1999-6-26 6487 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC102719  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC28616  Cyperus eragrostis M. S. Taylor 1979-10-3 2223 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge corssing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CHSC94590  Cyperus eragrostis Lowell Ahart 2006-9-11 13298 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS120107  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 -A Butte Lawn on the south side of the path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CDA38925  Cyperus eragrostis L. Ahart 1999-9-21 8272 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
  CHSC43294  Cyperus flavescens Lowell Ahart 1987-9-4 5877 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 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
  UCD139948  Cyperus flavicomus Whitney Brim-DeForest 2013-8-16 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  JEPS98262  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte 12 air mi SW of Chico (near a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ordbend) 32 Comment
  CHSC102509  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 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. 209 Comment
  CHSC109757  Cyperus niger Lowell Ahart 2012-10-20 18502 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC34173  Cyperus niger L. Ahart 1981-9-19 3181 Butte Along edge of Hwy 70 just n of Arch Rock Tunnel, ca. 10 mi s of Storrie. 550 Comment
  SEINET10467193  Cyperus strigosus Mary Susan Taylor 1978-9-8 Taylor 1881 A Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC38805  Dactylis glomerata Vernon Oswald 1982-5-23 Butte Upper Bidwell Park, Chico, near the east end of Yahi Trail. Near Chico Creek. 207 Comment
  CHSC11341  Datura ferox Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43777  Datura stramonium var. tatula Vernon Oswald 1986-11-2 2291 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek near the end of the paved portion of Upper Park Road. 91 Comment
  UCD127424  Daucus pusillus R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  SEINET10536226  Delphinium Mary Susan Taylor 1976-3-9 Taylor 1022 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC93081  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge. 1127 Comment
  CAS-BOT-BC8573  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte 2.5 miles E of Oroville on Highway 24 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
  CAS-BOT-BC10103  Delphinium hesperium subsp. pallescens H. E. Brown 1897-5-1 207 Butte near Clear Creek Comment
  CHSC101301  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC24887  Delphinium nudicaule D. J. Funk 1976-4-11 7 Butte Ca. 15 ft. sw of Little Chico Creek. 365 Comment
  SD234160  Delphinium nudicaule Virginia Pinkus Ryder 1965-4-3 368 Butte Table Mountain. Growing at edge of Coal Canyon and down into basaltic canyon. 366 Comment
  CHSC46459  Delphinium nuttallianum V. Oswald; L. Ahart 1989-6-27 3819 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 2042 Comment
  SEINET5338095  Delphinium nuttallianum D. H. Heinze 1963-4-16 s.n. Butte Chico Calif., Valley grassland. 61 Comment
  CHSC56772  Delphinium patens M. S. Taylor 1981-5-5 3608 Butte W side of spur rd, ca. 1.5 mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 mi n of Feather Falls. 792 Comment
  CHSC51902  Delphinium patens subsp. patens B. M. Bounous 1987-4-1 11 Butte N end of Table Mtn, ca 6 mi N of Oroville, ca 100 yds W of Cherokee-Table Mtn Rd. 335 Comment
  CAS-BOT-BC121611  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC121619  Delphinium patens subsp. patens Mrs. C. C. Bruce 1897-4-1 1914 Butte Forest Ranch Comment
  UC1080381  Delphinium patens subsp. patens E. K. Balls 1957-5-23 22529 Butte 3 mi se turn-off (Hwy 32 to De Sabla) 670 Comment
  CHSC100790  Delphinium variegatum J. D. Jokerst; R. A. Schlising 1981-4-16 1300 Butte 0.9 mi E of Bangor Road on Swedes Flat Road. Comment
  CHSC52505  Delphinium variegatum Judy A. LeFurgey 1978-4-15 26 Butte Ca. 6 mi ne of Chico s side of field by Horseshoe Lake, ca. 0.2 mi n of Chico Mun. Golf Course Clubhouse. 60 Comment
  CHSC53165  Delphinium variegatum Barbara Williams 1977-4-15 9 Butte Cana Pine Creek Road, 11.5 mi n of Chico. 100 yds w of Hwy 99. Comment
  CHSC53298  Delphinium variegatum R. J. Goedl 1976-4-20 1 Butte Ca. 6.4 mi se of Chico on Skyway, 25 yds s of Highway. Field. 213 Comment
  UCD96741  Delphinium variegatum J. P. Smith; J. O. Sawyer 1973-4-14 6058 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico. Comment
  CDA24274  Delphinium variegatum subsp. variegatum T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC2505  Delphinium variegatum subsp. variegatum W. Fitzwater 1958-4-12 Butte Plains on Oroville Hwy. between Oroville and Chico. Comment
  CHSC4081  Delphinium variegatum subsp. variegatum J. E. Bowlin 1967-4-14 19 Butte Near the railroad tracks, ca 30 ft. from the Skyway and ca. 1.8 mi e of the corner of Skyway and Humbug Rd., Chico. 60 Comment
  CAS-BOT-BC16979  Delphinium variegatum subsp. variegatum A. A. Heller 1918-4-19 12987 Butte Valley oak belt on the banks of Pine creek 12 miles north of Chico. Comment
  SEINET12094434  Dendromecon rigida Unknown 1988-1 10 Butte 1.2 mi N of Paradise, ca 1.3 mi SE of Magalia Reseervoir, ca 40 ft. E of Skyway 579 Comment
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  UC203666  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte along rd. between Dry Creek and Gridley (and near Nelson) Comment
  SEINET10524217  Deschampsia danthonioides Vernon H. Oswald, Lowell Ahart 1988-7-13 Oswald 3577 Butte T25N, R5E nw/S16. Red Fir Forest. Road to High Lakes e of Philbrook Reservoir. Common in wet soil of a seep on a steep outcropping of metasedimentary rock on the n side of the road. 1859 Comment
  CAS-BOT-BC201740  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek Comment
  LA206370  Deschampsia elongata E. B. Copeland; 1929-7-16 335 Butte Jonesville 1550.0 Comment
  CHSC35003  Dianthus armeria R. A. Schlising 1980-6-14 3710 Butte N of Lake Oroville along Hwy 162, 0.2 miles N of Berry Creek and 0.8 miles S of junction with Bald Rock Road. Roadside. 560 Comment
  SEINET10866368  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4173 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC86952  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
  UC398915  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  SEINET12089316  Dicentra formosa J. P. Kroessig 1977-1 17 Butte SW shore of Magalia Reservoir, ca 0.5 mi SE of Magalia. Paradise Quadrangle, 15'. SE 1/4 of Sect 707 Comment
  SEINET12046113  Dichelostemma capitatum K. E. Warwick 1978-1 3 Butte ca 50 m N of Humbolt Rd, 1 km E of intersection of Humbolt Rd & Bruce Rd, ca 3 km E of Chico Comment
  JEPS113210  Dichelostemma capitatum subsp. capitatum Lowell Ahart 2007-5-22 13905 Butte Around the southeast edge of 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
  CHSC3820  Dichelostemma multiflorum L. E. Dunkel 1965-4-25 21 Butte 200 yds. Sw of Chico Rod and Gun Club Building, and 600 yds. Nw of Municipal Golf Cours building, Chico. 33 Comment
  CHSC51937  Dichelostemma multiflorum L. P. Janeway 1987-6-5 2148 Butte Along the Peavine Cr rd 1.1 mi E of its beginning at the rd along French Cr. 693 Comment
  JEPS26745  Dichelostemma multiflorum P. C. Hutchison 1961-6-9 2090 Butte 7 mi s Jarbos Gap (along U.S. Hwy 40 Alt., canyon of the North Fork of the Feather River); Canyon of the North Fork of the Feather River Comment
  SEINET8476791  Dichelostemma multiflorum M. J. Williams 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise. 168 Comment
  SEINET10533889  Dichelostemma volubile Carter 1966-4-30 Carter 387 Butte Found 7 miles E of Oroville ca 1/8 mile W off Feathervale at 6120 Woodleaf Star Rt.; growing on shaded, brushy hillside 100 yds W of house. 1000 feet/ Cahparral. Associates: Sidalcea, Ceanothus cuneatus, Avena. Comment
  CHSC37110  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  UCD63992  Digitaria sanguinalis L. E. Hazeltine 1916-7-10 Butte Chico. Comment
  CHSC87543  Diospyros kaki R. D. Fischer 2004-4-11 125 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, shading picnic table, at the junction of 10 Mile House Road and Annie Bidwell Trail. 256 Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47496  Diplacus douglasii Lowell Ahart 1973-3-14 173 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC151921  Diplacus douglasii A. A. Heller 1921-3-27 13534 Butte On the steep slope above Butte Crek near the bridge on Honey Run Road Comment
  CAS-BOT-BC150503  Diplacus grandiflorus Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC44763  Diplacus grandiflorus R. Banchero 1980-6-2 175 Butte Along Hwy 32 ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of its jct with Forest Ranch Rd. 609 Comment
  CHSC44824  Diplacus grandiflorus R. Banchero 1980-5-7 145 Butte Near the jct of Bear Ranch Creek and Hwy 70, ca 0.3 mi SW of Arch Rock Tunnel. 609 Comment
  CHSC44789  Diplacus kelloggii R. Banchero 1980-6-19 256 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC43154  Diplacus layneae R. A. Schlising; D. Ikeda 1980-5-31 3608 Butte Cohasset Ridge, S of village of Cohasset, along firetrail above Cohasset Hwy. Comment
  CHSC44814  Diplacus layneae R. Banchero 1980-6-12 210 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  CAS-BOT-BC154030  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC25293  Diplacus torreyi M. S. Taylor 1977-7-15 1416 Butte On s side of Humbug Rd, ca. 3 mi s of Paradise. 579 Comment
  CHSC44796  Diplacus torreyi R. Banchero 1980-6-26 269 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC44803  Diplacus torreyi R. Banchero 1980-6-2 182 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  CHSC76962  Diplacus tricolor Ida Ryan 1893-5-1 Butte Iron Canon (illegible). Comment
  SEINET8373690  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 8 miles from Chico. Comment
  CHSC100483  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  UC600766  Dodecatheon alpinum H. F. Copeland 1931-6-11 Butte Jonesville Comment
  CHSC13897  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 248 Butte 0.3 mi e on Neal Road from Hwy 99 on n side of road. Comment
  SEINET10449637  Dodecatheon clevelandii subsp. patulum Mary Susan Taylor 1975-3-3 Taylor 392 Butte In field opposite Chico Municipal Airport, along Cohasset Rd, ca. 3 mi N of Chico. Associates: Layia fremontii, Lepidium nitidum, Brodiaea pulchella, Chlorogalum pomeridianum. 61 Comment
  CHSC67290  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1954 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  CHSC72400  Dopatrium junceum Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  SBBG69653  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi N of Chico Comment
  UC131824  Downingia bicornuta var. bicornuta Dr. E. B. Copeland 1903-5-15 3176 Butte Chico Comment
  UCD55099  Downingia cuspidata Rachel Foster 1968-4-13 68- 212 Butte North Table Mountain. 396 Comment
  UCD80194  Downingia ornatissima CNPS SN Foothill Team 2005-4-13 SNFN 0120 Butte City of Chico, Chico Municipal Airport, 20 m N of fence across SE border of accessible area, about half the distance down paved road. 62 Comment
  CAS-BOT-BC41347  Draba verna Lowell Ahart 1983-4-1 3914 Butte About 4 miles south of Jarbo Gap. Along the edge of old Highway 40. 350 Comment
  UCD115553  Draba verna L. Ahart 1973-11-21 149 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile N and 2.5 miles E of Honcut, about 12 miles S of Oroville. 39 Comment
  CHSC34537  Draba verna var. aestivalis R. E. Preston 1982-2-21 177 Butte N facing slope of small side branch of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 243 Comment
  CHSC38420  Draba verna var. aestivalis Vernon Oswald 1983-4-4 262 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA129731  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 1/2 mile south of Barnum Mill. Chico Quadrangle. 1372 Comment
  UCD124001  Drosera X obovata Barry Rice 2011-8-21 BR 110812 Butte Mallory Meadow. 1350 Comment
  UCD170791  Drosera rotundifolia Barry Rice 2016-6-30 BR- 160603 Butte Chico Meadows. 1280 Comment
  JEPS120572  Drymocallis glandulosa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CAS-BOT-BC159641  Drymocallis glandulosa var. glandulosa Lowell Ahart 1985-5-15 774 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  JEPS115701  Drymocallis glandulosa var. reflexa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  UC600378  Drymocallis hansenii E. B. Copeland 1929-7-25 Butte Jonesville 1550 Comment
  CAS-BOT-BC70852  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte along the edge of Poe Power House Road, about 1 mile northwest, about 1 mile southeast of Jarbo Gap 487 Comment
  UCD80275  Dryopteris arguta CNPS SN Foothill Team 2005-3-30 SNFN 0070 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  SEINET10449678  Dudleya cymosa Mary Susan Taylor 1981-5-15 Taylor 3735 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  CHSC38310  Dysphania ambrosioides Vernon Oswald 1983-9-17 1043 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  SEINET11934612  Dysphania anthelmintica Unknown 1981-1 3224 Butte a little W of Gray Lodge Waterfowl Mgmt HQ, ca 0.75 mi W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CHSC23541  Dysphania botrys M. S. Taylor 1975-10-29 968 Butte Along Butte Creek, ca. 250 yds s of Humbug Rd and ca. 2 mi e of junc of the Skyway and Humbug Rd, ca. 8 mi e of Chico, Comment
  CHSC47672  Dysphania pumilio Lowell Ahart 1989-9-21 6391 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  JEPS120610  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UCD98828  Dysphania pumilio J. A. Ream 1931-7-21 2240 Butte Paradise. Comment
  SEINET10552416  Echinochloa colona Lowell Ahart 1977-8-14 Ahart 1548 Butte On damp soil in a slough. Peter Ahart Ranch, Honcut. Valley grassland. 50 Comment
  CHSC71268  Echinochloa crus-galli Lowell Ahart 1998-7-1 8031 Butte On the margins of a stream, 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 350 Comment
  SEINET231760 Image available Echinochloa crus-galli L. Arhart 1984-9-17 4792 B Butte Peter Arhart Ranch ca. 2.3 mi N and 0.3 mi E of Honcut ca. 12 mi S of Oroville 50 Comment
  UCD61067  Echinochloa muricata var. microstachya P. B. Kennedy 9-10 Aug 1921 Butte Experiment Station, Biggs. Comment
  UCD137954  Echinodorus berteroi Herbert L. Mason; Verne Grant 1946-9-4 13107 Butte Butte Sink. 833 Canal, West Gridley Road. Comment
  CHSC36968  Eclipta prostrata M. S. Taylor; L. Ahart 1982-10-11 5147 Butte Graylodge Wildlife Refuge, near checking station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC4578  Egeria densa C. Glascock 1965-1-27 199 Butte Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CHSC49635  Egeria densa Vernon Oswald 1984-8-20 1651 Butte Wilson Landing Slough at the w end of Wilson Landing Rd. In a slough of the Sacramento River. 39 Comment
  CHSC115333  Elatine Lowell Ahart 2015-4-24 20071 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC45275  Elatine heterandra Vernon Oswald 1988-4-26 3282 Butte Gray Lodge Waterfowl Management Area, on the n side of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CHSC78285  Eleocharis acicularis Lowell Ahart 2000-7-11 8576 Butte Pond edges, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS98305  Eleocharis acicularis Lowell Ahart 2000-10-2 8699 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC600703  Eleocharis acicularis H. F. Copeland 1930-7-24 1356 Butte Jonesville; in swamp 1524 Comment
  SEINET10971927  Eleocharis acicularis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4728 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  POM313057  Eleocharis acicularis var. acicularis H. L. Mason, Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, Butte Sink Comment
  CHSC38908  Eleocharis acicularis var. occidentalis Vernon Oswald 1983-7-21 890 Butte Upper Bidwell Park, Chico, along the n-w edge of Horseshoe Lake. 100 Comment
  CHSC68423  Eleocharis acicularis var. occidentalis L. P. Janeway; R. A. Schlising 1988-7-16 3026 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC51021  Eleocharis bella Lowell Ahart 1990-7-4 6546 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC75978  Eleocharis engelmannii Lowell Ahart; Vernon H. Oswald 1999-8-13 8144 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
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  HSC97773  Eleocharis macrostachya L. Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, E side of Clark Rd. (Hwy. 191), 200 yds. S of Dry Creek, 10 mi. NW of Oroville 61 Comment
  UCD49747  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville, Butte County. In and beside the 'Lily Pond,' a permanent pool, warm in summer. 1750 Comment
  CHSC45142  Eleocharis pachycarpa Lowell Ahart 1969-7-12 29 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC55295  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte Drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC78307  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. 1310 Comment
  JEPS98287  Eleocharis quinqueflora Lowell Ahart 2000-5-10 8333 Butte 12 air miles SE of Oroville (N margin of a large wash, just W of the road crossing, Peter Ahart Ranch, 1 3/4 mi N and 1 1/4 mi E of Honcut) 36 Comment
  JEPS98469  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte 3 1/3 air miles SW of Oroville (SE of a large pond 100 yds S of Feather River, W of break in levee, 1/2 air mile W of Pacific Heights Road); Oroville Wildlife Area 42 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
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  UC1133005  Elymus elymoides subsp. elymoides A. E. Wieslander 1933-6-23 323 Butte Bottle Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  UC1609071  Elymus elymoides subsp. elymoides Lowell Ahart 1993-6-20 7005 Butte about 1 (air) mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10963911  Elymus glaucus Lowell Ahart 1988-6-21 Ahart 6052 Butte On dry rocky disturbed soil, along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles SE of Jarbo Gap. Yellow Pine Forest 366 Comment
  CHSC44175  Elymus glaucus subsp. glaucus V. Oswald; Lowell Ahart 1988-7-29 3642 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CHSC37099  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Near edge of dirt rd that is near Pinkard Creek, ca. 1.8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  SEINET6635812 Image available Epilobium brachycarpum H. F. Copeland 1923-1 404 Butte Nelson Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, 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
  CHSC34013  Epilobium campestre L. Ahart 1981-7-18 2937 Butte On bottom of a drain ditch along the edge of the Pacific Heights Rd, ca. 1/8 mi w of Hwy 70, ca. 3 mi sw of Oroville. 35 Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC41314  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-7-22 550 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA725008  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UC1122517  Epilobium ciliatum subsp. glandulosum P. L. Johannsen 1936-7-17 940 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC600552  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-23 Butte meadow near Jonesville Inn; Jonesville 1500 Comment
  CHSC46642  Epilobium densiflorum Lowell Ahart 1989-7-4 6361 Butte Mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC111965  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 306 Comment
  CHSC54442  Epilobium glaberrimum Vernon H. Oswald; Lowell Ahart 1991-7-15 4738 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. Just upstream from the bridge. 1051 Comment
  CHSC70337  Epilobium glaberrimum R. A. Schlising 1982-7-24 4336 Butte E of Stirling City, at West Branch of Feather River, below the Diversion Dam at Retson Road. On rockwall at streamside. 975 Comment
  UC1586476  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald and Lowell Ahart 1991-7-15 4738 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Rd) at creek Marble Creek (e of Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek, e side of creek just upstream from bridge) 1051 Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  SEINET10453021  Epilobium obcordatum Mary Susan Taylor 1979-7-21 Taylor 2149 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC46681  Epilobium oregonense V. Oswald; L. Ahart 1989-8-15 3935 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In a meadow adjacent to a lake n of and visible from the road. 1752 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CDA38098  Epilobium saximontanum T. C. Fuller 1962-7-12 9166 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC38234  Equisetum arvense Vernon Oswald 1983-6-2 602 Butte Upper Bidwell Park, Chico, near the east boundary of the park. 207 Comment
  CHSC44623  Equisetum arvense Vernon Oswald 1984-4-16 1155 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CHSC9134  Equisetum arvense Terril Wolt 1970-3-10 6 Butte Ca. 500 ft. W. of public boat launch on River Rd., 8 mi. W. of Chico. Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  CHSC51840  Equisetum laevigatum Terril Wolt 1970-3-10 8 Butte Ca 500 ft W of public boat ramp along River Rd, 8 mi W of Chico. Comment
  JEPS110229  Equisetum laevigatum Lowell Ahart 2006-7-16 12984 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  RSA0118769  Equisetum laevigatum Lowell A. Ahart 2013-4-20 18551 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 0.5 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3.75 miles (air) northeast of Honcot. 50 Comment
  UC1586568  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte near Lake Oroville (w of Springtown Rd.) 304 Comment
  CAS-BOT-BC204452  Eragrostis cilianensis Lowell Ahart 1981-9-5 3063 Butte Honcut 35 Comment
  CAS-BOT-BC204454  Eragrostis cilianensis Lowell Ahart 1979-10-2 s.n. Butte In Honcut. The area is at the intersection on Lower Honcut Road and Smullin Road 33 Comment
  CHSC102726  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 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
  CHSC30530  Eragrostis pectinacea var. pectinacea M. Merryman; R. Banchero 1979-9-23 48 Butte SW of Chico, just e of Ord Ferry and Sacramento River. Riverbank. 30 Comment
  CHSC97418  Eragrostis pectinacea var. pectinacea Robert Fischer 2006-6-18 1022 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 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
  CHSC112629  Eragrostis pilosa var. pilosa Lowell Ahart 2013-10-16 19117 Butte South edge of the paved road, about 100 yards southeast of the restroom, near 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
  CHSC25501  Eragrostis pilosa var. pilosa L. Ahart 1977-8-14 1552 Butte On the sides of a slough. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS120165  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 Lunch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  CHSC60278  Eremogone cliftonii L. P. Janeway 1987-5-20 2082 Butte Cyn of N Fk Feather R. N-facing slope just above hwy 70 3.1 mi NE of Pulga bridge. 472 Comment
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Jul 8 2014
  CHSC91263  Eremogone cliftonii L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-5-25 8396 Butte Northern High Sierra Nevada. Plumas National Forest; top of south-trending granite ridgetop with large rounded rock outcrop-pings; 1.3 km northeast of Flea Mountain; drainage of Dogwood Creek. 1152 Comment
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Jul 8 2014
  JEPS108546  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi north of Rag Dump; between Granite Ridge and Granite Spring 1371 Comment
  CAS-BOT-BC168361  Eremogone ferrisiae Lowell Ahart 1980-9-10 2636 Butte 3 miles north-east of Milsap Bar - Sierra Nevada 1100 Comment
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC300618  Erigeron foliosus var. hartwegii Lowell Ahart 1980-5-12 2252 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC46551  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1989-7-12 3844 Butte Road between Bald Mtn Lookout and Jones Meadow, ca. 2.3 mi (air) nne of the lookout. Edge of meadow. 1828 Comment
  CAS-BOT-BC295167  Erigeron inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  SEINET10473744  Erigeron inornatus Lowell Ahart 1983-8-16 Ahart 4284 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  POM55203  Erigeron inornatus var. inornatus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SD5418  Erigeron lassenianus E. B. Copeland 1929-7-17 Butte Above Jonesville. 2000 Comment
  CHSC30417  Erigeron sumatrensis J. D. Jokerst; M. S. Taylor 1979-11-11 634 A Butte Adjacent to Goodspeed-Watt Rd, 0.1 mi N of its jct with Nelson Rd, ca 6.0 mi N of Chico. Comment
  CHSC5964  Eriobotrya japonica M. MacArthur 1968-6-18 208 Butte E side of Big Chico Creek, just S of bridge near PSA bld., Chico State College campus. 60 Comment
  CHSC116974  Eriodictyon californicum Danielle Gee 2013-4-27 Butte Yankee Hill Rd., 30 yards off Hwy. 70, along road cut. 579 Comment
  CHSC33364  Eriodictyon californicum S. Posner 1972-9-24 Butte Betweem dredger tailings off Humbug Rd. 200 yds. south of Humbug Rd., 3 miles east of Skyway. Comment
  CHSC44135  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. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  JEPS95461  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte 2 air miles N and 3 1/2 mi E of Forbestown (along both sides of dirt road to Forbestown Reservoir, near Woodleaf Creek, 3/4 mi SW of Forbestown Reservoir Dam) 762 Comment
  CAS-BOT-BC269843  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC269852  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC269854  Eriogonum nudum var. pubiflorum A. A. Heller 1914-7-22 11585 Butte Little Summit 1463 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  OBI69159  Eriogonum roseum Kari Fisher 2000-10-7 9 Butte Lindo Channel, 100 ft from E First St 82 Comment
  CHSC34721  Eriogonum umbellatum var. ahartii M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39089  Eriogonum ursinum var. ursinum R. A. Schlising 1982-7-21 4334 Butte N part of county, S of Philbrook Reservoir on small rock outcrops. 1853 Comment
  SEINET10937607  Eriogonum wrightii subsp. trachygonum Mary Susan Taylor 1979-11-15 Taylor 2286 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  CAS-BOT-BC308172  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Cohasset, Sierra foothills Comment
  CAS-BOT-BC308174  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  UCD132222  Eriophyllum lanatum var. grandiflorum Collector Unknown 1925-5-17 1621 Butte Marysville Buttes. 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
  RSA715730  Erodium brachycarpum L. P. Janeway 2005-3-10 8357 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC71180  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte About 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS94822  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  SEINET10495115  Erodium moschatum Mary Susan Taylor 1973-1 Taylor 52 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC31894  Eryngium castrense L. Ahart 1977-6-3 1401 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC38053  Eryngium vaseyi Thomas W. Nelson, Jane P. Nelson 1976-5-9 2459 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  SEINET10939831  Eryngium vaseyi Mary Susan Taylor 1976-3-23 Taylor 1033 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC1759  Erythranthe cardinalis R. M. Staley 1953-7-13 Butte Butte Creek. Comment
  CHSC33342  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, ca. 2.5 mi e of Lower Jct of Zink and Bald Rock Rd, 0.5 mi from the road. 975 Comment
  CHSC94841  Erythranthe floribunda Lowell Ahart 2006-10-8 13430 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CAS-BOT-BC153855  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 miles east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC39936  Erythranthe glaucescens M. S. Taylor 1984-4-4 5383 Butte N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CAS-BOT-BC153865  Erythranthe glaucescens Mrs. C. C. Bruce 1897-5-1 2104 Butte Butte Creek & Iron [canon] Canyon Comment
  CHSC84226  Erythranthe guttata Lowell Ahart 2003-7-17 10419 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  SJSU969  Erythranthe guttata A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  SEINET8399965  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  CHSC105162  Erythranthe nasuta Christopher T. Ivey 2007-3-31 371 Butte Big Chico Creek Ecological Reserve. 360 Comment
  SD7068  Erythranthe primuloides Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC32640  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3462 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  JEPS97587  Erythronium multiscapideum R. D. Stone and W. B. Davilla 1984-4-20 590 Butte along the road to Bardees Bar Pulga (ca. 2.5 mi SSW of); Canyon of North Fork Feather River 411 Comment
  CAS-BOT-BC504522  Erythronium multiscapideum Mrs. J. H. Morrison 1931-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  POM219090  Erythronium multiscapideum H. F. Copeland 1928-4-3 350 Butte Near Magalia. Comment
  CHSC38577  Eschscholzia caespitosa Vernon Oswald 1983-2-23 94 Butte Upper Bidwell Park, Chico, along Yahi Trail 400 ft w of Salmon Hole Parking Area. 146 Comment
  UC398692  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole Chico Creek (e of Chico) Comment
  CAS-BOT-BC402970  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  UC176651  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte near Big Chico Creek (e of Chico) Comment
  SEINET12092006  Eschscholzia lobbii Unknown 1979-1 17 Butte Small population ca 5 mi SE of the town of Cherokee on Cherokee Road on Table Mtn., 23 mi SE Comment
  CHSC33167  Euphorbia lathyris R. E. Preston 1981-5-6 65 Butte At 728 W. First Ave., Chico. Comment
  SD126344  Euphorbia serpillifolia Lowell Ahart 1984-8-19 4785 Butte West of Pacific Heights Road, 5 miles Southwest of Oroville 39 Comment
  SEINET10873986  Euphorbia serpillifolia Lowell Ahart 1985-10-12 Ahart 5200 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  RSA755268  Euphorbia spathulata L. Ahart 2009-5-15 15701 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CHSC46920  Euthamia occidentalis Lowell Ahart 1977-9-20 1570 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC109357  Fallopia japonica T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CHSC89028  Festuca idahoensis A. Peterson 2003-5-6 77 Butte Southeast of Chico, Hwy 70 road shoulder, about 2 1/2 miles sw of bridge over north fork of Feather River. 609 Comment
  CHSC113277  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 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
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CAS-BOT-BC77691  Ficus carica John Thomas Howell 1961-9-22 36750 Butte Feather River Highway 3 miles from Oroville Comment
  CHSC42748  Ficus carica Lowell Ahart 1987-8-8 5857 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  OBI2924  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Cyn; Pulga 488 Comment
  CAS-BOT-BC62908  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11882 Butte Canyon of Chico creek 5 mi. e. of Chico. The type was collected about 50 mi. to the s., probably along the Bear River. Comment
  CAS-BOT-BC53776  Frangula rubra A. A. Heller 1913-6-7 10790 Butte Near Stirling 1036 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
  SEINET8730880 Image available Frasera albicaulis Unknown 1946-1 2944 Butte S. 1, T. 20 N0. , R. 5 E. Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 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
  CHSC99556  Fraxinus dipetala L. P. Janeway 2008-5-26 9370 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  JEPS119531  Fraxinus dipetala Lowell Ahart 2012-4-20 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  RSA31116  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC196270  Fraxinus dipetala A. A. Heller 11405 Butte between the 14 Mile House and Forest Ranch 731 Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  CHSC23536  Fritillaria M. S. Taylor 1975-3-3 401 Butte Along Richardson Springs creek, ca. 1 mi n of the Hotel, ca. 8 mi n of Chico. 121 Comment
  JEPS33409  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte in Pinkston Canyon, Big Bend Road to Yankee Hill, close to junction of new US 40-A w old road at upper end of Feather River damsite Yankee Hill; Pinkston Canyon 548 Comment
  CAS-BOT-BC136068  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  CAS-BOT-BC130316  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Near Magalia Comment
  CAS-BOT-BC124018  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  CAS-BOT-BC130430  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CHSC10766  Fritillaria recurva Lowell Ahart 1970-5-14 Butte Near Sly Creek, Gold Cup. 914 Comment
  CHSC31810  Galium aparine L. Ahart 1974-4-24 420 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10500691  Galium bifolium Mary Susan Taylor 1978-7-18 Taylor 1714 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  UC600431  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte gulch draining into Colby Canyon 1524 Comment
  CHSC113436  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  CHSC34219  Galium bolanderi M. S. Taylor 1981-5-29 3815 Butte Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. 853 Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  SEINET10500695  Galium bolanderi Mary Susan Taylor 1977-6-25 Taylor 1381 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10500698  Galium bolanderi Mary Susan Taylor 1978-7-21 Taylor 1801 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  HSC66332  Galium grayanum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3202 Butte Humboldt Peak, on W side and top of peak 2155 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10500736  Galium porrigens var. tenue Mary Susan Taylor 1980-3-1 Taylor 2349 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  JEPS126557  Gamochaeta ustulata Lowell Ahart 2016-5-25 20878 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC169935  Garrya fremontii Wm. S. Levis 1931-7-3 s.n. Butte Middle Feather River Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 Comment
  HSC93378  Gastridium phleoides L. Ahart 1995-5-30 7584 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  SEINET191205 Image available Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte Lone Pine Forest Guard Station: 2 miles north of route 32 Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville Comment
  UCD105746  Genista monspessulana Michael A. Vincent; Ethan H. Freid 1998-4-6 8109 Butte Table Mountain. Along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  UC177582  Gentianella amarella subsp. acuta H. M. Hall 1914-7-22 9770 Butte near Jonesville (meadows on Willow Creek); Willow Creek 1554 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC109656  Geranium carolinianum Lowell Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. 79 Comment
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC61476  Geranium carolinianum Vernon H. Oswald 1993-5-18 5398 .1 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  RSA0028454  Geranium dissectum L. Ahart 2005-4-14 11704 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
  JEPS119546  Geranium molle Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17858 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CHSC110102  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Forbestown Road; 1.8 air km south of the Ponderosa Reservoir dam. 658 Comment
  SEINET12350112  Gilia tricolor subsp. tricolor Unknown 1998-4-11 7 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  CAS-BOT-BC266586  Githopsis pulchella A. A. Heller 1914-5-22 11423 Butte Near Richardson Springs Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC50106  Githopsis pulchella subsp. campestris Vernon Oswald 1990-4-24 4170 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  JEPS117236  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  CHSC60971  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC112788  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte Drying edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CDA2162  Glyceria declinata L. Ahart 2000-5-21 8377 Butte On the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. Comment
  UC1594725  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte about 2 air mi s Snow Mountain (about 0.5 mi n of Carr Mine) 1767 Comment
  CAS-BOT-BC302477  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  SEINET10971220  Gnaphalium palustre Mary Susan Taylor 1980-6-29 Taylor 2990 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  RSA169400  Gratiola ebracteata L. S. Rose 1963-6-5 6314 -2 Butte 3 mi. w of Palmero 46 Comment
  UC175440  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte n Oroville (Table Mountain Olive Ranch); Table Mountain Olive Ranch Comment
  CDA13734  Grindelia hirsutula var. davyi G. F. Hrusa, T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC6696  Grindelia hirsutula var. davyi Marilyn Lee 1968-5-3 180 Butte On S. side of the Skyway ca 8 miles E. of Chico. Comment
  CHSC97328  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills. Along the Oroville-Quincy Hwy 0.3 road km southwest of the south end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville. 306 Comment
  POM41634  Grindelia hirsutula var. davyi C. C. Bruce 1897-06 1953 Butte Chico. Comment
  UC480668  Hackelia californica H. F. Copeland 1929-6-11 1235 Butte Jonesville 1524 Comment
  UC392205  Hackelia nervosa E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  CHSC78224  Hainardia cylindrica Lowell Ahart 2000-5-17 8364 Butte Near the south margin of the Thermalito Afterbay, on the poor dirt road, about 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 mioles (air) west of Oroville. 42 Comment
  CDA42861  Hedypnois cretica L. Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC306539  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  UC426989  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville 1500 Comment
  CAS-BOT-BC306543  Helenium bigelovii A. A. Heller 1928-6-16 14668 Butte At Butte Meadows Comment
  SEINET10839193  Helenium puberulum Mary Susan Taylor 1977-6-25 Taylor 1384 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC11823  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville, at 'the Summit'. 2150 Comment
  POM55212  Helianthella californica var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC39360  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  JEPS124123  Heliotropium europaeum Lowell Ahart 2015-10-9 20542 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  UCD119460  Heliotropium europaeum Richard R. Halse 2006-8-2 6978 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
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Aug 16 2016
  CHSC26762  Hemizonia congesta subsp. luzulifolia M. S. Taylor; M. Hayes 1977-8-16 1445 Butte On s side of Pentz Rd near culvert, ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  SEINET10474720  Hemizonia parryi subsp. rudis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5146 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  POM219520  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  POM36296  Hesperevax caulescens C. C. Bruce 1897-06 2112 Butte Fields Comment
  CAS-BOT-BC175993  Hesperolinon californicum H. E. Brown 1897-5-1 214 Butte Near Clear Creek Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  UC1111608  Hesperolinon micranthum Lewis S. Rose 1955-6-15 55100 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  SEINET10903214  Hesperolinon micranthum Mary Susan Taylor 1978-5-6 Taylor 1575 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC116746  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS116097  Heterocodon rariflorum Lowell Ahart 2009-5-15 15699 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  JEPS93842  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ione oak tree, nw of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10460745  Heterocodon rariflorum Mary Susan Taylor 1980-4-27 Taylor 2548 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  JEPS121890  Heterotheca grandiflora Lowell Ahart 2014-11-17 19912 Butte Just below the high water line of Lake Oroville, about 150 yards southwest of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. Comment
  CHSC34709  Heterotheca oregona var. compacta M. S. Taylor 1980-9-26 3340 Butte In Lindo Channel, jct of Mangrove and Cohasset, in Chico. 45 Comment
  CHSC107596  Heuchera micrantha var. erubescens Lowell Ahart 2011-7-9 17578 Butte Northwest part of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CAS-BOT-BC312344  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CHSC45685  Hieracium albiflorum Vernon Oswald 1983-7-6 812 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CDA13236  Hieracium gracile G. F. Hrusa, T. D. Wilfred 1996-7-8 13083 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CDA35776  Hoita macrostachya J. R. Keck Jr. 1992-6-3 PDR# 724909 Butte Along road to Nelson Point boat access near Paradise. 0 Comment
  RSA443115  Hoita macrostachya L. Ahart 1985-7-9 5107 Butte About 1 miles south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles northwest of Forbestown. 549 Comment
  CHSC78407  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC320294  Holocarpha virgata Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile east of Oregon City 400 Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 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
  CHSC102174  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2009-5-30 15778 Butte On dry soil, broad open drainage in oak woodland, about 60 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
  CHSC101125  Hordeum murinum subsp. glaucum Lowell Ahart 2009-5-8 15670 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC284885  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-16 37568 Butte Magalia 731 Comment
  UC203611  Horkelia fusca subsp. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  UC600383  Horkelia fusca subsp. tenella E. B. Copeland June, 1931 Butte Jonesville Comment
  CHSC1557  Horkelia tridentata subsp. flavescens M. Davidson 1929-5-2 Butte Paradise. 609 Comment
  CHSC883  Hosackia pinnata E. Stilson 1897-5-1 Butte Comment
  CAS-BOT-BC400827  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mountain Olive Ranch north of Oroville Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  CAS-BOT-BC312927  Hypochaeris glabra M. S. Taylor; L. Hanson; B. Smith 1981-5-29 3809 Butte Plumas NF/Oroville Rd. Chino Ridge 853 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  SEINET10473837  Hypochaeris glabra Mary Susan Taylor 1981-5-19 Taylor 3809 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  CHSC67203  Idahoa scapigera James D. Jokerst 1992-4-14 3346 Butte Stone Ridge Ranch. E of Cohasset Hwy. and Chico Municipal Airport, S of barn on ridge top. 91 Comment
  RSA150570  Iris hartwegii Lee W. Lenz 1961-6-20 24350 Butte Feather River Canyon, between first and second power dams-- near Cresta power station Comment
  CHSC46530  Iris hartwegii subsp. hartwegii Lowell Ahart 1980-5-19 2316 Butte Growing on the ridge east of the Golden Trout Crossing on the South Fork of the Feather River, about 4 miles west of the Sly Creek Dam. 1066 Comment
  CHSC77450  Iris macrosiphon Laura Bogni 1997-4-5 17 Butte West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 701 Comment
  CHSC90017  Iris macrosiphon Peggy Fain 1991-4-6 11 Butte N. side Richardson Springs Road ca. 4 km. from intersection with Cohasset Highway. 152 Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  SEINET3876030  Iris macrosiphon D. W. McNeal, Todd McIntyre 1989-4-18 3369 Butte Shady oak woodland on the margin of a barren serpentine outcrop above Lunt Rd., 0.4 mi. North of Highway #70.; 0 Comment
  SDSU1944  Isoetes bolanderi E. B. Copeland 1929-6-29 732 Butte Above Jonseville. 533 Comment
  CHSC94929  Isoetes howellii W. Gray; M. Brown 2005-3-16 34 Butte West of Wildwood park, Chico. 85 Comment
  CAS-BOT-BC69948  Isoetes howellii Lowell Ahart 1974-5-30 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36897  Isoetes nuttallii L. Ahart 1982-6-15 3563 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS106158  Isoetes nuttallii Lowell Ahart 2004-4-4 10717 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS98584  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CHSC60643  Isoetes orcuttii Vernon H. Oswald 1993-4-15 5271 Butte Upper Bidwell Park, Chico, in the vernal pool located at the SE corner of the fenced enclosure along the north boundary, somewhat E of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  UC2026887  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC93634  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 1 Butte Rancho Llano Seco, W of Ryan Island, 2.8 km W of ranch house, 200 meters E of Sacramento River. 30 Comment
  SBBG127962  Juglans hindsii L. Ahart 2009-8-3 16252 Butte N side of Ten Mile House Rd, Upper Bidwell Park, 3/8 mi SW of jct of Ten Mile House Rd and Hwy 32 379 Comment
  CHSC50694  Juncus acuminatus Lowell Ahart 1990-5-25 6486 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
  CHSC96947  Juncus acuminatus Lowell Ahart 2007-7-7 14263 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS124272  Juncus articulatus subsp. articulatus Lowell Ahart 2015-11-18 20666 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS113186  Juncus brachyphyllus Lowell Ahart 2007-5-22 13898 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  JEPS113866  Juncus brachyphyllus Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  UC203672  Juncus bufonius A. A. Heller 1914-6-2 11478 Butte 8 mi n Oroville Comment
  CHSC56895  Juncus bufonius var. bufonius L. P. Janeway; B. Castro 1991-4-9 3870 Butte 1/2 mi west of Dunstone Drive, 1 mi south of Wyandotte. 176 Comment
  CHSC6669  Juncus bufonius var. bufonius Marilyn Lee 1968-4-19 123 Butte Along west side of Cherokee Road, near first reservoir, ca 100 yards east of cemetary and 2 miles south of Cherokee. Comment
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC94836  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  JEPS98716  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 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
  UC1609050  Juncus bufonius var. occidentalis Lowell Ahart 1993-8-29 7119 Butte about 6 1/2 mi ne of Stirling City (about 2 1/2 mi ne of Bald Mountain) 1584 Comment
  CHSC47540  Juncus capitatus Lowell Ahart 1980-5-4 2207 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  SEINET10472432  Juncus capitatus Lowell Ahart 1985-5-10 Ahart 4957 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  UC1609502  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  UC1594673  Juncus covillei var. obtusatus Lowell Ahart 1992-7-27 6863 Butte about 2 mi nw of Four Trees (about 2 mi ne of Coyote Gap, about 2 mi w of the Oroville-Quincy Highway, along Wildcat Creek); Wildcat Creek 1219 Comment
  CDA2697  Juncus diffusissimus L. Ahart 2000-7-18 8596 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS98525  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 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
  JEPS118083  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
  JEPS113832  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  RSA0113968  Juncus effusus subsp. pacificus Lowell A. Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 mile west of the Ponderosa Dam. 258 Comment
  CDA37217  Juncus effusus var. exiguus CDFA Staff 2004-10-18 s.n. Butte Thermalito Afterbay. 0 Comment
  CHSC107568  Juncus effusus var. pacificus Lowell Ahart 2011-8-19 17637 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1252 Comment
  SEINET10938194  Juncus effusus var. pacificus Lowell Ahart 1985-6-30 Ahart 5086 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC64053  Juncus ensifolius S. C. Morey 1993-8-4 705 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS114775  Juncus ensifolius Lowell Ahart 2008-7-23 15142 Butte on the N side of the South Fork of the Feather River, about 10 yds W of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosa Dam 258 Comment
  UCD135933  Juncus exiguus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2010-8-5 16765 Butte along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road above Lost Creek Reservoir. 1149 Comment
  CHSC30359  Juncus hemiendytus var. hemiendytus J. D. Jokerst; R. A. Schlising 1980-6-16 841 Butte Near Butte Meadows, 0.1 mile south of the jct of Humboldt Rd and Skyway. 1341 Comment
  CHSC41911  Juncus howellii Lowell Ahart 1983-8-16 4294 Butte Along the banks of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC107563  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  HSC100752  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Small spring on S side of road and wet meadow on N side, S side of a good forest road, 0.5 mi. N of Lost Creek Reservoir Dam, and 4.5 (air) mi. N of Clipper Mills. 1267 Comment
  RSA795245  Juncus laccatus L. Ahart 2011-8-23 17647 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 air miles northeast of Clipper Mills. 1134 Comment
  UC600805  Juncus laccatus E. B. Copeland Jul 1931 Butte Jonesville Comment
  CHSC47556  Juncus leiospermus Lowell Ahart 1979-4-30 1854 Butte On the top of Table Mountain, near the large parking area, south-east side of the road, about 7 miles north of Oroville. 396 Comment
  SEINET259921  Juncus leiospermus M. S. Taylor 1980-4-21 2561 Butte Table Mt ca. 8 mi N of Oroville 610 Comment
  CHSC47564  Juncus leiospermus var. ahartii Lowell Ahart 1978-3-26 1620 Butte On the bottom and sides of vernal pools, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  CHSC11960  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte Near Butte Creek House, above Jonesville. 1750 Comment
  CHSC69060  Juncus nevadensis Lowell Ahart 1997-8-1 7762 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain. about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC113462  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte Depression in a large disturbed area on the south side of Philbook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC57156  Juncus orthophyllus L. P. Janeway; C. A. Janeway 1986-8-31 1808 Butte Along Scotts John Creek at road 26N27, 3 mi from Humboldt Road. 1737 Comment
  JEPS115909  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC117439  Juncus tenuis Lowell Ahart 2016-5-24 20870 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Rodad, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  RSA0113970  Juncus tenuis Lowell A. Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 miles west of the Ponderosa Dam. 258 Comment
  UCR246367  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Northern Sierra Nevada Highlands (n SNH), near parking lot for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock 1050 Comment
  SBBG121534  Juncus tenuis L. Ahart 2007-6-12 14081 Butte E side of Rockefeller Rd, at the intersection of Bald Rock Rd and Rockefeller Rd, ca. 13 mi NE of Oroville 1011 Comment
  UCSB63745  Juncus tenuis Ahart, Lowell 1998-6-3 Butte T20N, R4E, NE 1/4 Sec. 17; NW of the cow chute along Cherokee Rd; North Table Mtn; about 7 mi (air) north of Oroville 403 Comment
  HSC101162  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Hwy, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill 830 Comment
  CHSC96886  Juncus usitatus Lowell Ahart 2007-7-11 14291 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC97123  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte On the south side a drainage ditch, on the north side of Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 22 Comment
  UC1134266  Juniperus californica J. E. Sowder 1933-7-7 109 Butte Camel Mound Chico Quad., Camel Mound 609 Comment
  NY786845  Keckiella breviflora var. glabrisepala J. L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609.6 Comment
  UCD123760  Keckiella breviflora var. glabrisepala Joseph M. DiTomaso 1976-5-23 471 Butte Lake Oroville, peninsula at south end. 274 Comment
  CHSC76005  Kickxia elatine Lowell Ahart; Vernon H. Oswald 1999-8-13 8132 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET3450721  Kickxia elatine Unknown 2003-6-25 10316 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1.67 miles east of Honcut 30 Comment
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Oct 9 2018
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC30528  Koeleria phleoides N. E. H. Prouty 1980-4-28 156 Butte Near junction of Pentz Rd. with Pentz-Magalia Hwy. 207 Comment
  CHSC36416  Koeleria phleoides Donald M. Burk 1982-4-24 115 Butte Along top of canyon on N. side of Neal Rd., ca. 0.6 mi. W. of Elliot Spring House. 243 Comment
  CHSC90806  Koeleria phleoides Lowell Ahart 2005-5-2 11769 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
  JEPS117220  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC1484  Kumlienia hystricula J. Koopman 1929-3-5 Butte Centerville road. 114 Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CHSC64038  Kyhosia bolanderi S. C. Morey 1983-8-4 719 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CDA30230  Lactuca saligna L. Ahart 2009-8-3 16254 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. Comment
  CHSC26678  Lactuca serriola M. S. Taylor; M. Hayes 1977-8-16 1452 Butte Between maintenance buildings and Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS96112  Lactuca serriola Vernon H. Oswald and Lowell Ahart 1996-7-22 8081 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on w side of levee at sw corner of Tract 6, Sanctuary 1); Sacramento River Wildlife Refuge, Llano Seco Unit 30 Comment
  CAS-BOT-BC341292  Lagophylla glandulosa John Thomas Howell 1962-6-15 37486 Butte Magalia 731 Comment
  CAS-BOT-BC341294  Lagophylla glandulosa Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC341313  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC3268  Lamium amplexicaule M. L. Hillier 1966-3-14 2 Butte In orchard on n. side of Hwy. 32, 1 mile e. of Hamilton City. Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  CHSC90626  Lasthenia californica Jose Romero 1983-4-20 20 Butte Oroville Wildlife Area, junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  CHSC278  Lasthenia fremontii J. Turner 1930-4-18 Butte Near Chico Golf Links. Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  SBBG128738  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte small vernal pool, ca. 30 yards W of Easter Cross Parking Lot, Upper Bidwell Park, ca. 1 mi E of Chico 89 Comment
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  UC1562482  Lathyrus brownii Vernon Oswald and Lowell Ahart 1990-5-29 4264 Butte ca 1.5 mi wsw Butte Meadows (Logging Rd (F-Line) on the w side of Butte Creek, at the camping area ca 0.4 mi sw of Humboldt Rd); Butte Creek 1316 Comment
  CHSC111151  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET10940068  Lathyrus nevadensis Mary Susan Taylor 1980-4-18 Taylor 2509 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC30785  Lathyrus sulphureus M. S. Taylor 1980-4-16 2497 A Butte Lake Oroville State Recreation Area, 0.5 mi s of Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 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
  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
  CHSC3872  Layia fremontii Gerry Carrauthers 1966-3-21 70 Butte Pentz Rd. ca. 15 mi. E. of Clark Rd. Ca. 15 mi. S.E. of city of Chico. Along roadside. Comment
  CHSC75252  Layia fremontii Jennifer Slater 1997-4-6 7 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 60 Comment
  CHSC90045  Layia fremontii Rhonda Posey 1991-4-3 7 Butte Meridian Rd., ca. 12.8 mi n of Chico. Ca. 50 yds. N of Renkow Rd. 70 Comment
  HSC43118  Layia fremontii Maralyn O'Meara 1974-4-20 269 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  JEPS120761  Leersia oryzoides Lowell Ahart 2013-9-20 19056 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  JEPS110291  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte In a drain ditch, on the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  JEPS115570  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road 407 Comment
  POM70456  Lepechinia calycina C. C. Bruce 1898-05 2382 Butte County seat grade. Comment
  CHSC50653  Lepidium didymum Lowell Ahart 1990-5-28 6501 Butte Along the edges of Palm Avenue, about 1/12 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  JEPS120954  Lepidium didymum Lowell Ahart 2013-4-20 18557 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CAS-BOT-BC89878  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  UC203607  Lepidium nitidum A. A. Heller 1914-4-11 11274 Butte 8 mi n Oroville Comment
  HSC23335  Lepidium nitidum Willis Ball 1970-3-3 74 Butte 1 mi. E of Chico Municipal Airport, Chico Comment
  SEINET10448292  Lepidium perfoliatum Mary Susan Taylor 1982-4-28 Taylor 4375 Butte T17N R1E sc border 14/23. Pennington quad. Graylodge Wildlife Refuge, e side of rd, ca. 1/4 mi se of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC103655  Lepidium strictum Lowell Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CAS-BOT-BC12911  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte About 1.5 mile northeast of Highway 99 and Pentz Road. 100 Comment
  CAS-BOT-BC13067  Lepidium virginicum var. menziesii L. S. Rose 1931-4-14 s.n. Butte Oroville. Comment
  UC436299  Lepidium virginicum var. pubescens E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  JEPS98448  Leptochloa fascicularis Lowell Ahart 2000-5-18 8372 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  UC1100307  Leptochloa fascicularis Herbert L. Mason 1945-9-19 12730 Butte nw Pennington; Gray Lodge Game Refuge Comment
  CHSC108138  Leptochloa fusca subsp. fascicularis Lowell Ahart 2011-10-29 17731 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  CHSC66176  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7662 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  POM313213  Leptochloa fusca subsp. fascicularis H. L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  CHSC36821  Leptosiphon bolanderi M. S. Taylor 1981-5-21 3777 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC2430  Leptosiphon filipes R. Carter 1965-6-17 236 Butte Found ca. 15 mi. NE of Oroville at Bald Rock Dome, 15 yds. E of Bean Creek Rd. on road that goes to the dome. 1051 Comment
  CHSC31788  Leptosiphon filipes L. Ahart 1974-4-14 408 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40748  Leptosiphon filipes A. A. Heller 1938-4-11 15023 a Butte East of Chico near the rifle range. 91 Comment
  UCD85177  Leptosiphon filipes CNPS SN Foothill Team 2005-5-4 SNNR 0017 Butte City of Chico, Upper Bidwell Park. 128 Comment
  JEPS124203  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte About 9 1/2 miles north of Oroville. Comment
  CAS-BOT-BC341780  Lessingia nemaclada Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile north-east of Oregon City 400 Comment
  CAS-BOT-BC342059  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  CAS-BOT-BC342061  Lessingia virgata Lowell Ahart 1976-9-4 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA500417  Lessingia virgata Vernon H. Oswald 1989-9-23 4013 Butte Butte Community College, a dry, gravelly slope between Parking Lot C and the Horse Arena 107 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC105519  Ligusticum grayi Lowell Ahart 2010-9-28 17243 Butte On damp black rich soil, meadow edges or under red fir trees, about 50 yards east of the poor dirt road, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CDA34704  Lilaea scilloides L. Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC130566  Lilium humboldtii A. A. Heller 1928-6-20 14627 Butte Paradise, east of the Sawmill on the Neal road Comment
  CHSC44652  Lilium pardalinum subsp. pardalinum L. P. Janeway 1988-7-2 2962 Butte Near the rd to French Cr, 0.9 mi S of Coyote Gap. 1188 Comment
  CAS-BOT-BC133043  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CAS-BOT-BC133052  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  UCD116443  Limnanthes H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  SEINET12183586  Limnanthes alba E. L. Knight 1988-1 16 Butte Small clustered population, ca 100 ft w of Ceanothus Road and ca 1 m n of East Avenue, in N. Chico 58 Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  POM282577  Limnanthes douglasii subsp. rosea Lyman Benson 1935-3-27 6364 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CAS-BOT-BC45930  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 miles north of Oroville 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
  UC971798  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1254 Butte Table Mt. Oroville (summit) Comment
  JEPS120764  Limnophila X ludoviciana Lowell Ahart 2013-9-20 19062 Butte About 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about 1 mile southeast of the Rice Experiment Station. 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
  UC907829  Linanthus parviflorus P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway up Hunnicut road) Comment
  CHSC45235  Linanthus pungens L. P. Janeway 1988-6-16 2801 Butte Outcrop above Butte Cr; along rd in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  SEINET13711425  Lindernia dubia Lowell William Ahart, Lowell William Ahart 1999-1 8131 Butte 12 Mi (Air) SW of Chico, 2 Mi SE of Ordbend, Sacramento River 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
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC48015  Linnaea borealis var. longiflora Vernon Oswald 1985-6-17 1845 Butte Quartz Creek' Rd., 0.4 mi S of Fall River, ca. 6 air miles NE of Feather Falls. 1066 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
  CHSC113166  Lipocarpha micrantha Lowell Ahart 2013-11-13 19239 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
  CHSC34201  Lipocarpha micrantha J. D. Jokerst; L. Ahart 1981-9-26 1487 B Butte Low lying swale, E of Sacramento River ca 100 m, Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC20094  Lithocarpus densiflorus M. S. Taylor 1975-2-23 391 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  CHSC42858  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte On a black lava rock, near seeps, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC589702  Lithophragma parviflorum var. trifoliatum R. Holdenried 1938-4-2 59 Butte Paradise Comment
  RSA32009  Lithophragma parviflorum var. trifoliatum A. A. Heller 1929-4-12 14830 Butte Richardson s Springs Comment
  CAS-BOT-BC316347  Lithospermum californicum A. A. Heller 1918-5-5 s.n. Butte Near Magalia. Comment
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CHSC108787  Logfia gallica L. P. Janeway 2011-4-26 10239 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  CHSC117003  Logfia gallica Lowell Ahart 2016-6-4 20928 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC101799  Lolium multiflorum Lowell Ahart 2009-5-8 15669 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
  CHSC4351  Lolium multiflorum M. Hillier 1966-5-30 Butte NW side of CSC gym in large field by ski jump, Chico. Comment
  CHSC92511  Lolium multiflorum Lowell Ahart 2005-12-11 12519 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
  JEPS88228  Lolium multiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7734 Butte U.S. Fish and Wildlife Service parcel btw 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary, Sacramento River Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge 28 Comment
  CHSC31716  Lolium perenne L. Ahart 1972-5-8 104 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC271206  Lolium temulentum Lowell Ahart 1980-5-10 2230 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC10558  Lolium temulentum Lowell Ahart 1962-5-9 Butte Peter Ahart Ranch, Honcut. 39 Comment
  SEINET10592054  Lolium temulentum Lowell Ahart 1968-8-5 Ahart 18 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 150 Comment
  CHSC28971  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; M. S. Taylor 1980-11-24 453 Butte On top of rimrock which creates the waterfall ca 0.5 mi E of Richardson Springs. Comment
  CHSC102186  Lomatium marginatum var. marginatum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  JEPS120528  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km sutheast of Rim Road / Ponderosa Way. Comment
  CHSC14053  Lomatium utriculatum J. Farrell 1974-5-15 26 Butte Collected in grassy area near Honey Run Covered Bridge on Humbug Rd, ca. 6 mi e of Chico. Comment
  CHSC67328  Lomatium utriculatum J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-19 2021 Butte Canyon of the N Fork of the Feather River at the junction of Hwy 70 and Pulga Road across from the bridge. Comment
  SEINET10454533  Lomatium utriculatum Mary Susan Taylor 1980-4-19 Taylor 2534 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC28429  Lonicera hispidula M. S. Taylor 1979-10-5 2238 Butte SE side of Paradise Lke, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  SEINET7085240  Lonicera interrupta Steven R. Hill 2010-7-17 38551 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  CHSC115434  Lonicera japonica Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  UC1129064  Lotus humistratus C. G. Albertus 1933-6-1 11 Butte 6 mi sw Paradise; Chico Quad. 152 Comment
  CDA27292  Lotus purshianus D. G. Kelch 2006-8-2 6 .345 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  JEPS103533  Lotus purshianus var. purshianus Lowell Ahart 2002-6-21 9750 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  RSA769807  Lotus purshianus var. purshianus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  SEINET3729652  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  SEINET12165110  Lotus scoparius L. Ahart, Ahart, P. 1984-1 4691 Butte ca 1miSE of Hurleton, 1/12miE of Oak Grove Cemetary, ca 10miE of Oroville 500 Comment
  CHSC112879  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC28457  Ludwigia peploides R. A. Schlising; R. Banchero 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at W margin of county at Sacramento River and Ord Ferry Road; in slough. Comment
  UC1191767  Ludwigia peploides subsp. peploides Herbert L. Mason and Verne Grant 1946-8-14 13019 Butte canal near big pond on Sacramento Outing Club; Butte Sink, Sacramento Outing Club Comment
  UC727080  Lupinus A. A. Heller 1938-4-3 15010 Butte between Pebtz and Cherokee; between Pebtz and Cherokee 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
  LA205032  Lupinus albicaulis E. B. Copeland; 1929-7-17 378 Butte above Jonesville 2100.0 Comment
  SJSU10702  Lupinus albicaulis F. S. Gereb 1968-5-4 93 Butte 5 mi E of Chico Comment
  RSA31851  Lupinus albicaulis subsp. purpurascens A. A. Heller 1941-5-22 16138 Butte About a half mile west of Jarboe Pass on state Highway #24. Comment
  CAS-BOT-BC196247  Lupinus albifrons var. eminens H. E. Brown 1897-4-15 s.n. Butte Near Clear Creek Comment
  POM23778  Lupinus albifrons var. eminens C. C. Bruce 1897-04 2028 Butte Yankee Hill. Comment
  RSA30735  Lupinus albifrons var. eminens A. A. Heller 1915-3-25 11782 Butte Southwest end of the Marysville Buttes. Comment
  CHSC39976  Lupinus andersonii L. Ahart; P. Ahart 1983-7-29 4250 Butte Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  SEINET10452023  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, 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. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  RSA699516  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  CHSC90498  Lupinus bicolor Jose Romero 1983-4-20 12 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  UC865499  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 mi below Centerville (in Sierra foothills); Sierra foothills, below Centerville Comment
  UCD107232  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 miles below Cenerville in the Sierra foothills. 76 Comment
  CHSC109180  Lupinus bicolor var. tridentatus Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 Butte On the north side of Big Chico Creek, south side of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS114719  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  POM23589  Lupinus densiflorus var. palustris C. C. Bruce 1898-05 2453 Butte Grain fields. Comment
  CHSC97021  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada. Plumas National Forest; along the road to Cascade 1.2 road km north-northwest of its crossing of Fall River; 0.3 air km east of the confluence of Dark Canyon at Fall River. 1067 Comment
  UC1609420  Lupinus grayi Lowell Ahart 1993-6-26 7023 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge); , w of the Lost Creek Reservoir 1188 Comment
  CHSC90509  Lupinus microcarpus var. densiflorus S. B. Collom 1988-4-24 3 Butte Ca. .3 mi e of entrance to Richardson's Spring Rd., off of Cohasset Highway, 1 mi ne of Chico Municipal Airport. Comment
  RSA755043  Lupinus microcarpus var. densiflorus L. Ahart 2009-5-15 15703 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC48567  Lupinus microcarpus var. microcarpus Vernon Oswald 1987-4-27 2347 Butte Forest Ave. ca. 300 ft s of E. 20th St., Chico. 71 Comment
  CHSC34684  Lupinus nanus M. S. Taylor 1981-5-5 3601 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  UC865348  Lupinus nanus A. A. Heller 1938-4-14 15034 Butte summit of Table Mountain 609 Comment
  RSA589930  Lupinus nanus subsp. nanus Michael A. Vincent, Robert Rhode, Jim Snowden, Karl Vincent 1996-3-29 7220 Butte North Table Mountain, W of Cherokee Rd., N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC28154  Lupinus nanus var. latifolius J. D. Jokerst 1979-5-5 210 Butte At base of uppermost rimrock, N. of Big Chico Cr., 3 mi. E of Chico. Comment
  CHSC32139  Lupinus nanus var. vallicola L. Ahart 1975-5-12 778 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  CHSC34234  Lupinus stiversii M. S. Taylor 1981-5-6 3627 A Butte N side of Ponderosa Way, 0.2 mi n of small bridge over Sucker Creek, ca. 3 air mile of Enterprise Bridge, ca. 4 air mi sw of Feather Falls. 335 Comment
  UC129305  Lupinus stiversii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS94067  Luzula cascadensis Vernon H. Oswald and Lowell Ahart 1998-8-11 9468 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi. n. of Four Trees-Coyote Gap Rd. 1396 Comment
  JEPS121922  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC107570  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 Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  CHSC71659  Luzula parviflora Vernon H. Oswald; Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC110347  Luzula subsessilis L. P. Janeway 2013-5-5 11098 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC84854  Lychnis coronaria L. P. Janeway; John Hunt 2003-6-5 7812 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  JEPS115184  Lychnis coronaria Lowell Ahart 2009-6-19 15935 Butte Along trail, onn the east side of Big Chico Creek, about 50 yards west ofTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC26620  Lycopus americanus Hayes 1977-9-24 117 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). In ditch along road edge. 30 Comment
  CDA5133  Lythrum hyssopifolia L. P. Janeway, B. Castro 1999-6-4 6453 Butte Sacramento Valley; East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. Comment
  CHSC30953  Lythrum hyssopifolia L. Ahart 1980-7-4 2456 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC74097  Lythrum hyssopifolia B. Castro; L. P. Janeway 1996-5-19 662 Butte Ca 3 air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just S of North Rim Trail. 320 Comment
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  SEINET10452841  Lythrum hyssopifolia Mary Susan Taylor 1977-10-10 Taylor 1519 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CDA5126  Lythrum salicaria G. D. Barbe 1982-8-11 3893 Butte At the northeast corner of State Wildlife Area, west of Pacific Heights Road, 1/4 mile west of end of Welsh Road, ca 2 miles south of Oroville. 0 Comment
  JEPS115612  Madia elegans Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  JEPS87530  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC220566  Madia elegans H. E. Brown Apr 1 1897-Apr 15 1897 196 Butte near Clear Creek 53 Comment
  CHSC38378  Madia elegans subsp. densifolia Vernon Oswald 1983-6-20 725 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. Near Chico Creek. 207 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
  SEINET10474802  Madia elegans subsp. densifolia Mary Susan Taylor 1979-8-4 Taylor 2172 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 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
  CHSC34031  Madia elegans subsp. vernalis L. Ahart 1981-7-7 2927 Butte Along edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  CHSC51856  Madia elegans subsp. vernalis L. P. Janeway 1988-6-5 2727 Butte Cyn of Chico Cr ca 3/4 mi NE of the end of Upper Park Rd. 259 Comment
  CHSC45692  Madia exigua Vernon Oswald 1987-4-14 2321 Butte Hwy 32 between Chico and Forest Ranch at the 17.0 mile marker. 390 Comment
  SD122590  Madia exigua Lowell Ahart 1984-6-8 4666 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  JEPS117380  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CAS-BOT-BC334651  Madia glomerata H. M. Hall 1914-7-22 9774 Butte Jonesville Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CAS-BOT-BC342960  Madia gracilis A. A. Heller 1914-8-6 11643 Butte About Chico Meadows 1219 Comment
  POM219437  Madia gracilis subsp. gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  UC179652  Madia sativa subsp. dissitiflora A. A. Heller 1914-8-6 11643 Butte Chico meadows 1219 Comment
  CHSC42809  Maianthemum racemosum L. P. Janeway 1987-7-4 2433 Butte Along the Concow Rd towards Jones Mdw ca 1 mi from Bald Mtn. 1786 Comment
  CHSC49663  Maianthemum racemosum Vernon Oswald 1984-6-11 1283 Butte Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  JEPS87518  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  UC572335  Malacothrix floccifera P. L. Johannsen 1936-7-22 962 Butte 1.5 mi sw Head of Bottle Creek; Lassen National Forest, Paynes Creek Quad. 1432 Comment
  CAS-BOT-BC347380  Malacothrix floccifera John Thomas Howell 1951-6-26 27516 Butte Big Bend Mt. 609 Comment
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  SEINET10475287  Malacothrix floccifera Lowell Ahart 1985-6-17 Ahart 5051 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  SEINET10479995  Malva nicaeensis Mary Susan Taylor 1982-4-28 Taylor 4360 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS119995  Marah fabacea Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17916 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  UC452592  Marah fabacea Mrs. R. M. Austin May 1883 126 Butte Chico Creek Comment
  CHSC26877  Marah watsonii Robert A. Schlising 1963-5-4 2557 Butte 0.7 miles southwest of junction with Skyway Road, along Honeyrun Road (in city of Paradise). Comment
  CHSC51058  Marah watsonii Pauleen Broyles 1987-4-29 1014 Butte The Nature Conservancy Vina Plains Preserve. Comment
  RSA724939  Marsilea vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley 23 Comment
  CHSC29116  Meconella californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2459 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  POM97344  Meconella californica R. M. Austin 1883-05 22 Butte Near Chico Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  JEPS115301  Medicago polymorpha Lowell Ahart 2009-5-8 15662 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
  RSA718385  Melica aristata L. Ahart 2006-6-24 12861 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  UCD67024  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  CAS-BOT-BC269379  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  SEINET10559685  Melica californica var. nevadensis A. Arthur Heller 1915-4-20 Heller 11860 Butte 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. In the digger pine and oak belt. 76 Comment
  CDA13298  Melica harfordii G. F. Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Plumas National Forest; Common colonies on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CHSC110453  Melica harfordii L. P. Janeway 2013-5-20 11112 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  CHSC49559  Melica harfordii Vernon Oswald 1988-6-2 3348 Butte Spur Rd. 210G on w side of Hwy 32 ca. 0.3 mi n of Platte Mt. Lookout. 975 Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC60210  Melica torreyana T. B. Devine 1980-4-10 678 Butte Beside Humbug Rd., ca. 1/4 mi. above covered bridge. Roadside. Comment
  JEPS87139  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte ca. 2 (air) mi. n. Oroville (w. side of small stream, e. of Cherokee Rd., Lake Oroville Recreation Area); Lake Oroville Recreation Area 91 Comment
  UC4586585  Melica torreyana Vernon H. Oswald and Lowell Ahart 1991-5-13 4584 Butte between Canyon Drive and Oroville Dam Blvd East (opposite spillway) Dan Beebe Trail; Lake Oroville Recreation Area Comment
  CHSC50325  Melilotus officinalis Vernon Oswald 1990-5-29 4259 Butte Hwy 99-Hwy 32 interchange in Chico. 65 Comment
  CDA42903  Melissa officinalis L. Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC102627  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 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. 181 Comment
  CHSC83001  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  CHSC26638  Mentha canadensis M. S. Taylor 1977-11-12 1530 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC52226  Mentha canadensis L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3094 Butte W side of Murphy Slough, across from Golden State Island. 38 Comment
  CDA42911  Mentha spicata L. Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC58925  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC28950  Mertensia ciliata var. stomatechoides M. S. Taylor 1978-7-19 1755 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  CHSC10754  Micranthes californica Lowell Ahart 1965-3-1 Butte Ahart Ranch, Honcut. 42 Comment
  RSA0058979  Micranthes californica Lowell A. Ahart 2012-4-9 17825 Butte Seeps on the southeast bank of Big Chico Creek, about 20 yards northwest of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC1674  Micranthes integrifolia L. Oliver; D. Sloan 1935-2-23 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC429038  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CHSC101980  Micropus californicus Diane Mastalir 1988-4-23 14 Butte 4 mi E of Hwy 70 on Palermo Rd, 4 mi S on Palermo=Honcut Hwy, 0.1 mi E on Melody Lane. 41 Comment
  CHSC59303  Micropus californicus J. L. Guardino 1992-4-18 11 Butte On southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  SEINET10475174  Micropus californicus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5382 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  RSA712992  Micropus californicus var. californicus L. Ahart 2006-5-10 12624 Butte North side of Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bride across the North Fork of the Featheer River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 386 Comment
  UC831274  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 mi n Oroville Comment
  CAS-BOT-BC348698  Microseris acuminata Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UCR212287  Microseris acuminata Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CAS-BOT-BC348702  Microseris acuminata John Thomas Howell 1976-4-2 51546 Butte About 2 miles southeast of Chico 60 Comment
  CAS-BOT-BC348704  Microseris acuminata J. D. Jokerst 1982-4-12 1524 A Butte West edge of Highway 149 3/10 mile north of Highway 70 Comment
  CAS-BOT-BC349091  Microseris douglasii subsp. tenella Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 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
  UCR190687  Mimulus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  LA209139  Mimulus aurantiacus G. P. Van Eselline; 1918-5-5 1722 Butte Near Nineshew Comment
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10570196  Mimulus bifidus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7043 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine, woody Plant, corolla apricot color. 701 Comment
  JEPS115643  Mimulus cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 266 Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  CDA13896  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-8 13753 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  UCD122721  Mimulus glaucescens Kirsten L. Tarp 1981-4-20 7 Butte Bidweel Park e of Chico, n of Chico municipal golf course. 97 Comment
  SEINET10570228  Mimulus glaucescens Lowell Ahart 1985-5-15 Ahart 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC113293  Mimulus guttatus Lowell Ahart 2014-4-9 19344 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC118860  Mimulus guttatus Christopher T. Ivey 2017-5-27 392 Butte Honeyrun Road, about 6.5 km NE of bridge crossing Butte Creek, S side of road. 453 Comment
  JEPS115190  Mimulus guttatus Lowell Ahart 2009-6-19 15926 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  POM193342  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1550 Comment
  UC426958  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville 1500 Comment
  SEINET8340795  Mimulus guttatus A. A. Heller 1915-5-4 11868 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC7511  Mimulus guttatus var. glaucescens R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  HSC43097  Mimulus kelloggii Maralyn O'Meara 1974-4-20 301 Butte Table Mtn. 305 Comment
  RSA256661  Mimulus kelloggii Dave Knorr 1974-4-20 137 Butte On Oroville's Table Mtn, near Cherokee Rd. Comment
  CHSC79580  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte E roadside of Hwy 32, ca. 1 mi NE of road Forest Ranch. 1097 Comment
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Mar 10 2006
  POM219092  Mimulus moschatus H. F. Copeland 1927-9-3 361 Butte Jonesville. Comment
  RSA754817  Mimulus moschatus L. Ahart 2009-6-30 15978 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  JEPS4245  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; Sierra 701 Comment
  CAS-BOT-BC174593  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  CHSC20118  Minuartia californica M. S. Taylor 1975-4-26 522 Butte In vernal pool, on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC4191  Minuartia californica Kathy Sommarstrom 1967-3-25 6 Butte Found 7.9 miles from freeway overpass to Paradise on Skyway, 20 yards to left of Hwy. 274 Comment
  CHSC92573  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC388610  Minuartia douglasii John Thomas Howell 1978-4-17 52838 Butte Table Mountain 381 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  JEPS117141  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CHSC37122  Moehringia macrophylla L. Ahart 1982-9-13 3830 Butte On high bar that had been mined for gold along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC37433  Moehringia macrophylla R. A. Schlising 1982-5-19 4250 Butte E of village of Feather Falls at Lumpkin ridge. 1280 Comment
  SEINET13711198  Moenchia erecta Lowell William Ahart, Lowell William Ahart 2000-1 8332 Butte 10 Air Mi. NE of Oroville at Oak Grove Cemetery (T19N, R5E, sec 23, Ctr.) 1800 Ft. 549 Comment
  CHSC28952  Mollugo verticillata M. S. Taylor 1978-9-8 1885 Butte Along flood control slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  UC1562289  Mollugo verticillata Lowell Ahart 1990-7-4 6538 Butte about 1/2 sw of Enterprise Bridge (across Lake Oroville, below the high water line of Lake Oroville) 243 Comment
  CAS-BOT-BC219943  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC62558  Monardella breweri subsp. lanceolata B. Castro 1993-7-27 490 Butte Ca 3 mi SW of jcn of French and Peavine Creeks, at SE end of Swayne Hill, on USFS Rd 23N28 ca 0.8 mi W of its jcn with Rd 22N34. 737 Comment
  SEINET10498922  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4134 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10968986  Monardella lanceolata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4652 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  UC104639  Monardella odoratissima subsp. pallida Mrs. R. M. Austin 1896-7-1 289 Butte Colby Comment
  UC600442  Monardella odoratissima subsp. pallida E. B. Copeland 1931-7-12 Butte Ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  SD6870  Monardella odoratissima subsp. pallida unknown 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC220449  Monardella sheltonii L. P. Janeway 1988-6-19 2821 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd 274 Comment
  CAS-BOT-BC220458  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  CHSC59108  Monardella venosa L. P. Janeway; B. Castro 1992-5-16 4187 Butte Small canyon between Hamlin Canyon and the unnamed canyon on the southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. 73 Comment
  CHSC60100  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of canyon SE of Neal Road; ca 200 ft NW of intermittent creek. 79 Comment
  CHSC31126  Monardella villosa subsp. villosa L. Ahart 1980-7-4 2453 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  SEINET11933619  Montia fontana subsp. chondrosperma M. S. Taylor, Oswald, V. 1984-1 5384 Butte S side Humbug Rd., ca 6 mi NE of Honey Run Covered Bridge, ca 10 air mi NE of Chico 372 Comment
  CAS-BOT-BC445036  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC7114  Montia parvifolia Paul Kinnison 1969-5-6 11 Butte On Highway 70 e 200 yds. up Bear Creek where it hits the road. Just before the abandon tunnel. Comment
  CHSC99564  Montia parvifolia L. P. Janeway 2008-6-22 9429 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  JEPS116117  Montia parvifolia Lowell Ahart 2009-5-15 15718 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
  RSA325093  Montia parvifolia M. S. Taylor 1981-4-28 3568 a Butte Aalong Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  RSA325117  Montia parvifolia M. S. Taylor 1981-5-7 3634 Butte N side of Ponderosa Way, N of the Sucker Creek bridge, 4 air miles SW of Feather Falls community. 366 Comment
  CHSC109628  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  JEPS116657  Morus alba L. P. Janeway, B. Castro 2010-5-8 9973 Butte Upper Bidwell Park, Chico Richardson Springs (along Yahi Trail about 15 m north of Big Chico Creek, 380 m west of the upper high power lines.); Cscade Range Foothills 88 Comment
  CHSC94655  Muhlenbergia andina Lowell Ahart 2006-9-28 13381 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  SEINET10605679  Muhlenbergia andina Vernon H. Oswald, Lowell Ahart 1989-7-21 Oswald 3885 Butte T26N R5E nw/nw/S29, Red Fir Forest. Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. Along a small drainage in a marshy part of the meadow. 1780 Comment
  CHSC64259  Muhlenbergia filiformis S. C. Morey 1983-8-1 650 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. Meadow. 1292 Comment
  SEINET4343727 Image available Muhlenbergia filiformis Unknown 2009-11-19 16546 Butte Meadow in Foothill Woodland; About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Par about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC398889  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC51292  Muhlenbergia mexicana Lowell Ahart 1990-9-30 6610 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge acoss Lake Oroville. 243 Comment
  RSA4650  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. 1750 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC45962  Myosurus minimus subsp. minimus Lowell Ahart 1974-3-18 324 Butte On the bottom of a vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC46103  Myosurus minimus subsp. minimus J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1540 Butte Grey Lodge, north side of Rutheford Rd, ca. 100 meters West of Pennington Rd. 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
  SEINET10501563  Najas guadalupensis Mary Susan Taylor 1978-7-22 Taylor 1846 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  UC21150  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e Chaparral House; Paynes Creek Quad., Lassen National Forest Comment
  CHSC38773  Narcissus pseudonarcissus Vernon Oswald 1983-2-14 69 Butte Upper Bidwell Park, Chico, about 50 ft e of Parking Area G (0.1 mi w of the power lines). 94 Comment
  CHSC88162  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1689 Comment
  RSA700392  Narthecium californicum Lowell A. Ahart 2004-8-2 11321 Butte The start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 4 miles (air) northeast of Stirling City 1690 Comment
  CHSC30074  Navarretia capillaris R. A. Schlising; R. Banchero 1980-7-14 3902 Butte North end of Snag Lake above Inskip. 1731 Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  SEINET10496819  Navarretia divaricata Mary Susan Taylor 1980-5-15 Taylor 2629 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
  CHSC45756  Navarretia divaricata subsp. divaricata L. P. Janeway 1988-6-14 2779 Butte Near W Br Butte Creek at crossing of road 1.9 mi W from hwy 32 towards Ewalt Camp. Near a mdw. 922 Comment
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  CHSC52106  Navarretia filicaulis L. P. Janeway 1988-6-25 2887 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC62777  Navarretia filicaulis B. Castro 1993-7-13 478 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along N side of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS18126  Navarretia filicaulis Rimo Bacigalupi with Howard Whisler 1957-7-26 6043 Butte along the Humbug Road 3.1 mi s of and below Nimshew (roadside cut in serpentine (same formation as that at Magalia-where this reaches the e side of Butte Canyon)) 365 Comment
  SEINET7373988 Image available Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Three and one-quarter miles SW of Forbestown, intersection of Forbestown Rd. and Black Bart Rd. 150 yds E of intersection. Comment
  SBBG128187  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Guardian Rock Trail, ca. 0.25 mi (air) SW of the intersection of Ten Mi House Rd and Hwy 32, Upper Bidwell Park, ca. 10 mi NE of Chico 398 Comment
  CAS-BOT-BC230299  Navarretia heterandra Peter H. Raven 1953-5-9 5423 Butte 7 miles SE of Chico on Oroville Road Comment
  UCD59428  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi. NW of Oroville, in field along N side of Cottonwood Rd. 54 Comment
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May 14 2010
  SEINET7072733  Navarretia intertexta subsp. intertexta A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico on Route 99. UTM Zone 10, 612125mE, 4386570mN. Coordinate datum: NAD 27.) Comment
  CHSC1251  Navarretia leptalea V. Holt 1951-7-8 Butte Butte Meadows. 1219 Comment
  POM129395  Navarretia leptalea Mrs. R. M. Austin 1896-07 258 Butte Colby Comment
  RSA470049  Navarretia leptalea H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville. 1524 Comment
  UCSB63717  Navarretia leucocephala Romano, Marci 1986-4-15 Butte junction of Broyles Rd and Hwy 99 11 m N of Chico 68 Comment
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  JEPS104317  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CAS-BOT-BC233618  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte Near Pents 152 Comment
  CHSC46223  Navarretia pubescens Pauleen Broyles 1987-6-19 1058 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. Along a dirt road. 360 Comment
  CDA40109  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte South edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. Comment
  CHSC28860  Navarretia tagetina J. D. Jokerst 1979-5-18 463 Butte Top of North Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  CHSC36705  Navarretia tagetina D. H. Ikeda 1980-5-10 358 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  CHSC37826  Navarretia tagetina D. H. Ikeda 1980-5-10 351 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  SEINET10840525  Nemacladus interior Brooks BROOKS s.n. Butte Enterprise, Type location Comment
  CHSC50049  Nemophila heterophylla Lowell Ahart 1990-3-9 6413 Butte On the steep banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC77431  Nemophila heterophylla Laura Bogni 1997-3-25 8 Butte Magalia grove; west side of Coutelenc Rd., 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  UC398653  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte about six mi e Chico (along Chico Creek); Chico Creek, e of Chico Comment
  JEPS3147  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big and Little Chico Creeks, Sierra Nevada foothills); Sierra Nevada foothills, btw Big and Little Chico Creeks 609 Comment
  UC126923  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte near Oroville (in the foothills of the Sierra Nevada); foothills Sierra Nevada, nar Oroville 150 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC39096  Nemophila spatulata R. A. Schlising 1983-8-27 4451 Butte N part of county, at Coon Hollow. In small meadow. 1706 Comment
  CHSC115431  Nerium oleander Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  JEPS117526  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  SEINET10964650  Nicotiana acuminata var. multiflora Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4270 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 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
  CAS-BOT-BC400068  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  UCD160271  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CHSC110260  Odontostomum hartwegii L. P. Janeway 2012-6-2 10834 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC23671  Odontostomum hartwegii M. S. Taylor 1976-4-27 1081 Butte Ca. 50 ft e of Cohasset Hwy, ca. 3 mi n of Chico. 60 Comment
  POM202705  Odontostomum hartwegii J. H. Morrison 1932-04 s.n. Butte Durham Comment
  SEINET10472784  Odontostomum hartwegii Lowell Ahart 1985-5-15 Ahart 4980 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  POM355266  Oenothera M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC35079  Oenothera elata subsp. hirsutissima R. A. Schlising 1981-11-3 4219 Butte Feather River Canyon along Hwy 70, ca 0.1 mi S of Arch Rock Tunnel. 463 Comment
  SEINET12164650  Onobrychis viciifolia M. S. Taylor 1981-1 3799 Butte T23N R5E sw1/4Sw1/4 Sec 29. Pulga Quad. N of Flea Valley Crk drainage + Pulga, ca5airmiE of Magalia 1067 Comment
  SEINET10935050  Orcuttia greenei Edward L. Greene Greene s.n. Butte Upper Sacramento near Chico Comment
  CHSC43597  Oreostemma alpigenum var. andersonii Vernon H. Oswald 1983-7-6 830 Butte Near Humboldt Rd. 3.4 mi NE of Butte Meadows. 1432 Comment
  UC601005  Orobanche californica subsp. grayana E. B. Copeland 1938-9-13 Butte Jonesville. Comment
  JEPS94305  Orthilia secunda Lowell Ahart 1997-8-1 7780 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
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' 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
  CHSC104808  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 455 Comment
  CHSC25254  Osmorhiza chilensis M. S. Taylor 1977-6-26 1378 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 609 Comment
  CHSC60946  Osmorhiza chilensis Lowell Ahart 1993-7-6 7059 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  CHSC58872  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC101813  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CDA38814  Oxalis pes-caprae L. Ahart 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC94539  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CHSC26787  Packera eurycephala var. lewisrosei M. S. Taylor 1978-5-6 1582 Butte Magalia. 609 Comment
  CHSC35669  Packera eurycephala var. lewisrosei R. E. Preston 1982-4-22 260 Butte Lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  SD71022  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 Butte Serpentine area, Magalia. 730 Comment
  JEPS24983  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  JEPS115994  Panicum acuminatum var. acuminatum Lowell Ahart 2009-6-3 15832 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
  CHSC62319  Panicum capillare B. Castro 1990-10-11 438 Butte Midway between Chico, Paradise and Oroville, ca 0.75 mi NW of 'Pentz', N and W of jcn Pentz and Messilla Valley Roads. In springs at base of W slope of Sausage Mtn. 164 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
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  CHSC37660  Paspalum distichum T. B. Devine 1981-9-3 764 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC94974  Paspalum distichum Lowell Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1 1/2 mile north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  RSA715882  Pectocarya pusilla L. Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte On the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico. 488 Comment
  CHSC94245  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS108767  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  CAS-BOT-BC69334  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 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
  UC1063634  Pellaea mucronata var. mucronata J. E. Sowder 1933-11-27 133 Butte 1 mi n <and> 1/4 mi e of Hog Spring; Chico Quadrangle Comment
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  SBBG28911  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 mi from Oroville on the Feather River Hwy Comment
  CHSC39673  Penstemon azureus var. angustissimus Lowell Ahart 1983-6-21 4097 Butte Growing along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  CHSC64668  Penstemon azureus var. azureus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 868 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with hwy 70. 1010 Comment
  SEINET10547987  Penstemon gracilentus Mary Susan Taylor 1980-8-2 Taylor 3209 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A 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
  CHSC31448  Penstemon laetus var. leptosepalus L. Ahart 1980-9-10 2641 Butte Along the edge of the rd, ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  UC454141  Penstemon laetus var. leptosepalus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  NY604516  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen National Forest. 640.1 Comment
  NY627285  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte Little Summit near Butte Meadows Comment
  CAS-BOT-BC245683  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  UC1560380  Penstemon newberryi var. newberryi E. Joyal and D. Mehlman 1988-7-3 1310 Butte Humboldt summit, E side Lsassen National Forest 2100 Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  CAS-BOT-BC330463  Pentachaeta alsinoides Rimo Bacigalupi; G. T. Robbins; Fran Chisaki 1956-4-19 5608 Butte Along the Oroville-Concow Road, 2.8 miles below (and S of) its junction with the Yankee Hill rd. 373 Comment
  CAS-BOT-BC71551  Pentagramma pallida Lowell Ahart 1980-3-26 2057 Butte At bridge, Swedes Flat Road 320 Comment
  CHSC3994  Pentagramma triangularis A. K. Revard 1967-4-15 2 Butte 3 yd. On s of kirt roadside ca. 0.3 mi up from Cohasset Hwy., and ca. 3.3 mi n on Cohasset Hwy. From the Richardson Springs Rd. Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte At end of Dark Canyon Rd, around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC101304  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC66659  Perideridia kelloggii Vernon H. Oswald; Lowell Ahart 1996-7-22 8089 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the SW corner of Tract 3.4, Sanctuary II, on the Llano Seco Ranch side of the refuge boundary. 32 Comment
  CHSC40215  Perideridia lemmonii Lowell Ahart 1985-6-30 5083 Butte Near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC91467  Perideridia lemmonii Lowell Ahart 2005-7-12 12143 Butte About 40 yards south of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 40 yards east of Forest Road 21N40, about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  CHSC28862  Perideridia oregana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 465 Butte Top of Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  CHSC26610  Persicaria amphibia M. P. Hayes 1977-9-24 118 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). In ditch along edge of road. 30 Comment
  CHSC37070  Persicaria hydropiperoides L. Ahart 1982-10-6 3847 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edges of North Honcut Creek. 50 Comment
  CAS-BOT-BC418953  Persicaria lapathifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC66167  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1996-5-27 7665 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile lane and the Sacramento River. Locally common on the drying bed of seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  CHSC34133  Persicaria maculosa L. Ahart 1981-9-19 3189 Butte On edges of a pond ca. 100 m n of Cresta Powerhouse, and a little e of Feather River along hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC46192  Persicaria maculosa L. P. Janeway; C. A. Janeway 1986-10-5 1914 Butte Along Pine Cr at Cana Hwy. Gravel bar along the creek. 48 Comment
  JEPS119936  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. Comment
  CHSC110406  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 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
  CHSC94786  Persicaria punctata Lowell Ahart 2006-10-8 13428 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
  JEPS119941  Persicaria punctata Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC98957  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10546870  Phacelia Mary Susan Taylor 1978-6-24 Taylor 1641 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC31637  Phacelia cicutaria Lowell Ahart 1974-4-14 403 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC83910  Phacelia cicutaria var. cicutaria Lowell Ahart 2003-4-10 10065 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC36081  Phacelia mutabilis R. A. Schlising 1981-8-4 4188 Butte Top (n end) of Scotts John Road, 3.1 mi n of its jct with main road to Jonesville. Comment
  RSA4127  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville, near Butte Creek 1500 Comment
  SEINET10658546  Phalaris brachystachys Mary Susan Taylor, James D. Jokerst 1979-11-11 Taylor 2279 Butte In wet embankment of irrigation ditch, on W side of Goodspeed Watt Rd, ca. 6 mi S of Chico. Associates: Lactuca serriola var. integrata, Polypogonum aviculare, Lactuca serriola 34 Comment
  JEPS95866  Phalaris paradoxa Lowell Ahart 1999-5-21 8068 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
  SEINET10949139  Phalaris paradoxa Lewis S. Rose 1937-6-11 Rose 37381 Butte 7 mi W of Honcut. Open fields 23 Comment
  CHSC28558  Phleum pratense M. S. Taylor 1978-7-21 1814 Butte On s side of Oroville-Quincy Hwy along a creek in a meadow, ca. 14 mi n of Lake Madrone. 548 Comment
  RSA700218  Phleum pratense L. Ahart 2004-6-22 11124 Butte on the north side of the Hupp Coutolenc Road, about 1/2 mile north of Paradise lake, about 1/2 mile northeast of De Sabla Reservior, about 4 miles (air) southwest of Stirling City. 822 Comment
  POM354301  Phoradendron bolleanum var. densum H. F. Copeland 1928-4-3 1000 Butte Near Magalia. Comment
  CAS-BOT-BC135096  Phoradendron juniperinum Joseph P. Tracy 1932-7-16 10648 Butte Trinity Summit, open places at Corral Prairie 1584 Comment
  LA209889  Phoradendron leucarpum subsp. tomentosum A. A. Heller; 1914-1-28 11157 Butte near Hog Springs, 6 mi E of Chico 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
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC58961  Phyla nodiflora var. rosea Lowell Ahart 1992-7-23 6832 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC59523  Phyllostachys bambusoides Bryan C. Willingham 1968-6-3 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  CDA5820  Physalis lancifolia T. C. Fuller 1959-10-2 3158 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC29996  Pilularia americana L. Ahart 1980-4-19 Butte Peter Ahart Ranch, Honcut. 50 Comment
  NY61961  Pinus monticola A. A. Heller 1915-6-26 12033 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
  CHSC84187  Piperia elongata Lowell Ahart 2003-6-30 10323 Butte Near the small stream, on the southeast 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
  CDA14075  Piperia transversa G. F. Hrusa, T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC44449  Piperia transversa Lowell Ahart 1988-6-21 6053 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  CHSC65868  Piperia transversa L. P. Janeway 1995-7-15 4856 Butte Watson Ridge, about 1.7 mi east-northeast of its western end. Along Road 21N25A. 1097 Comment
  POM365989  Piptatherum miliaceum L. Ahart, Peter Ahart 1984-6-10 4690 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CHSC27273  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  CHSC102375  Pistacia vera L. P. Janeway 2009-10-13 9950 Butte Upper Bidwell Park, Chico; south side of Big Chico Creek, along South Rim Trail/Annie Bidwell Trail 155 m east-northeast of its start at the east end of Centennial Ave. and Chico Canyon Road. 87 Comment
  SEINET10529819  Pityrogramma triangularis Mary Susan Taylor 1981-3-24 Taylor 3439 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC90102  Pityrogramma triangularis var. pallida Michelle Y. Wagner 1990-3-3 2 Butte 7 mi e of Oroville, 5/6 mi se of intersection of Oro Bangor Hwy and Miners Ranch Rd. 30' n of Honcut Creek. 152 Comment
  CHSC106875  Plagiobothrys austiniae Lowell Ahart 2011-4-28 17329 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC38274  Plagiobothrys austiniae Vernon Oswald 1983-3-13 161 Butte Upper Bidwell Park, Chico, along Yahi Trail 100 ft. w of Parking Area P (2.0 mi e of the power lines). Along the top of a cliff. 195 Comment
  SEINET10497366  Plagiobothrys austiniae Lowell Ahart 1984-4-6 Ahart 4544 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  UC398679  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte 7 mi n Chico; Rock Creek Comment
  JEPS21223  Plagiobothrys fulvus A. A. Heller 1914-3-23 11223 Butte hills 8 mi n Oroville Comment
  UC180154  Plagiobothrys fulvus A. A. Heller 1913-4-7 10726 Butte hills 6 mi n Oroville Comment
  CHSC26802  Plagiobothrys fulvus var. campestris M. S. Taylor; M. Hayes 1978-4-14 1568 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  POM252790  Plagiobothrys fulvus var. fulvus A. A. Heller 1938-4-23 15044 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  CHSC100833  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 a Butte About 1 mile E of Chico between Hwy 32 and Humboldt Road. 76 Comment
  CHSC46345  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-28 6279 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS108838  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS117189  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  JEPS117195  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC46779  Plagiobothrys greenei Lowell Ahart 1978-4-27 1672 Butte On the bottom of a swale in the pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD120869  Plagiobothrys greenei L. Ahart 1979-5-11 1870 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD60250  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte Near the Hooker Oak, 4.0 miles east of Chico. Comment
  JEPS124228  Plagiobothrys nothofulvus Lowell Ahart 2015-3-27 19969 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north Oroville. Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC46252  Plagiobothrys shastensis Vernon Oswald 1989-3-30 3728 Butte Upper Bidwell Park, Chico. Along the North Rim Trail between Lookout Point above Horseshoe Lake and the double set of power lines. 182 Comment
  CHSC87205  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  JEPS107765  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  CHSC169  Plagiobothrys tenellus M. Roberson 1956-5-2 Butte S.W. of Paradise along Skyway. 426 Comment
  RSA754389  Plagiobothrys tenellus L. Ahart 2009-4-22 15571 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC725415  Plagiobothrys tenellus A. A. Heller 1916-4-13 12318 Butte e Chico; Stilson Canyon Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  UCD115085  Planodes virginica William Anderson 1965-3-23 s.n. Butte Gray Lodge Field Station, California Deparment of Fish and Game FEP. Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  CHSC24971  Plantago elongata T. F. Burnham 1976-4-20 11 Butte 50 ft s of Cana Pine Creek Road, at the intersection of 99 and Cana Pine Creek Road. 97 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  CHSC34412  Plantago erecta R. M. Winchell 1980-4-17 1 Butte Covered Bridge along Butte Creek. Comment
  CHSC92533  Plantago erecta L. P. Janeway 2005-3-10 8343 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UC1125625  Plantago erecta C. G. Albertus 1933-5-29 6 Butte 1.5 mi n Wick; Chico Quad. Comment
  RSA594179  Plantago lanceolata S. O. Mattoon 1978-9-21 49 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  SEINET10499812  Plantago lanceolata Mary Susan Taylor 1978-9-8 Taylor 1892 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC111147  Plantago major Lowell Ahart 2012-6-14 18191 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CHSC5991  Plantago major var. scopulorum M. MacArthur 1968-6-12 159 Butte In lawn on SW side of Life Science bld., Chico State College campus. 60 Comment
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  CHSC113489  Platanthera sparsiflora Lowell Ahart 2014-7-13 19645 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA755342  Platanus racemosa L. Ahart 2009-8-23 16296 Butte On the west 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
  UC203603  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte e Chico; Canyon of Big Chico Creek 68 Comment
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Feb 17 2016
  CHSC1209  Platystemon californicus S. Carter 1929-4-16 Butte Just north of Chico. 60 Comment
  UCD137545  Plectritis congesta subsp. brachystemon Michael A. Vincent; Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  UC726298  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  CAS-BOT-BC458147  Pleuricospora fimbriolata E. B. Copeland 1937-12-1 s.n. Butte Jonesville Comment
  HSC66331  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, 100ft. W of Old Humboldt Rd. 2012 Comment
  CAS-BOT-BC244402  Poa annua Javier Penalosa 1962-6-18 2462 A Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC27233  Poa annua P. Moyer 1972-3-4 101 Butte 2nd and Ivy, building next to Chicano Center, side yard. 60 Comment
  CHSC59054  Poa annua Lowell Ahart 1992-7-21 6823 Butte Along Coon Hollow Creek, east of the logging road, about 2 1/2 miles (air) north-east of Philbrook Reservoir. 1706 Comment
  JEPS113239  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville 35 Comment
  JEPS122193  Poa annua Lowell Ahart 2014-4-16 19367 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC113420  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  JEPS116022  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  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
  JEPS119850  Poa pratensis subsp. pratensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18240 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  RSA712924  Poa secunda L. Ahart 2006-5-10 12615 Butte On the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.5 miles (air) southwest of Pulga. 355 Comment
  CAS-BOT-BC236367  Poa secunda subsp. secunda Ira L. Wiggins 1925-3-25 1416 Butte 3.5 miles E of Durham on State Land Colony Highway Comment
  SEINET10508319  Poa tenerrima Mary Susan Taylor 1980-3-15 Taylor 2382 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC33851  Pogogyne zizyphoroides Don Kroessig 1979-4-16 1 Butte On the e side of Hwy. 149, 1.3 mi. n of intersection with Hwy. 70, nw of Oroville. 76 Comment
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 Comment
  UC1562380  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte on s edge of Durham Highway about 3 mi e Durham (about 1 mi w of Highway 99) 60 Comment
  CDA36786  Polanisia dodecandra subsp. trachysperma D. B. Joley 1972-9-23 1 Butte Pentz Rd. 0 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
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC28008  Polygala cornuta M. S. Taylor 1978-7-21 1798 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  SEINET5845272  Polygala cornuta M. J. Williams, W. Roderick 1984-5-25 84- 22 -6 Butte Near Skyline Road, between Magalia and Paradise 640 Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  CHSC96818  Polygala cornuta var. cornuta Lowell Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  RSA718791  Polygala cornuta var. cornuta L. P. Janeway 2006-6-25 8698 Butte Northern High Sierra Nevada: Along a major dirt road 2.6 km south of Stirling City toward West Branch Feather River crossing 1006 Comment
  JEPS121259  Polygonum aviculare Lowell Ahart 2013-10-26 19217 Butte S side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CAS-BOT-BC414190  Polygonum aviculare subsp. depressum John Thomas Howell 1961-9-22 36743 Butte Bank of Feather River, Oroville 53 Comment
  CHSC90474  Polygonum bidwelliae Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11675 Butte Big Chico Creek Ecological Reserve. Ridge top, about 50 yards south of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  RSA32833  Polygonum bidwelliae A. A. Heller 1941-5-25 s.n. Butte Just back of the Rifle Range, 5 miles east of Chico, opposite golf links Comment
  UC398664  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte along grade on road from Chico to Paradise; Neale grade Comment
  CHSC99540  Polygonum bolanderi L. P. Janeway 2008-6-15 9413 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  CAS-BOT-BC414365  Polygonum californicum Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CHSC28398  Polygonum californicum J. D. Jokerst 1979-10-12 379 Butte 50 met. E. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  POM219174  Polygonum douglasii H. F. Copeland 1928-8-18 318 Butte Jonesville, Butte Creek Canyon 1524 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
  UC1562376  Polygonum hydropiper Lowell Ahart 1990-5-25 6493 Butte about 1/8 mi nw Enterprise Bridge across lake (e of Enterprise Boat Launch Area, below high water line of lake); Lake Oroville 259 Comment
  JEPS110129  Polygonum lapathifolium Lowell Ahart 2006-9-28 13371 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  UC600405  Polygonum minimum H. F. Copeland 1932-8-19 Butte Butte Creek Jonesville (near source) 1700 Comment
  CHSC40783  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  JEPS88546  Polygonum persicaria Vernon H. Oswald and Lowell Ahart 1996-7-22 8097 Butte U.S. Fish and Wildlife Service Parcel between 7-Mile Lane and Sacramento River (edge of public access parking lot on 7-Mile Lane, adjacent to se corner of Tract 2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CAS-BOT-BC420994  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  CAS-BOT-BC71863  Polypodium californicum Lowell Ahart 1981-3-29 2716 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  SEINET10470876  Polypodium californicum Lowell Ahart 1983-4-1 Ahart 3917 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
  CHSC109672  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC61549  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CAS-BOT-BC233208  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte 7 miles SW of Feather Falls. Ca. 1 mile S of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CHSC102730  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  CHSC37138  Polypogon monspeliensis L. Ahart 1982-7-18 3681 Butte Along sides and bottom of wash. Peter Ahart Ranch, ca. 1 1/2 mi n and 1 1/2 mi e of Honcut. 50 Comment
  CHSC47632  Polypogon monspeliensis Lowell Ahart 1982-7-18 3681 Butte Along the sides and bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD91374  Polypogon monspeliensis R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  SEINET10530106  Polystichum Mary Susan Taylor 1980-4-1 Taylor 2420 A Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  SEINET10530115  Polystichum imbricans Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3470 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 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
  CHSC61624  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte On the south side of the dirt road, road is on the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  SEINET10530133  Polystichum scopulinum Mary Susan Taylor 1980-8-2 Taylor 3214 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC51864  Porterella carnosula L. P. Janeway; R. A. Schlising 1988-7-16 3034 Butte Vernal pool next to Humbug Summit Rd ca 0.8 mi W of Butte Creek House. 1805 Comment
  UC398947  Porterella carnosula E. B. Copeland 1929-7-29 397 Butte above Jonesville 1750 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  SEINET10501689  Potamogeton crispus Mary Susan Taylor 1982-5-22 Taylor 4496 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  UC1562436  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte on e side of Forbestown Reservoir (on e side of the road, at the Forbestown Generator) 487 Comment
  UC392231  Potamogeton gramineus E. B. Copeland 1929-7-29 Butte near Butte Creek House; Jonesville 1750 Comment
  CHSC45740  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-19 2224 Butte Along Sly Cr at crossing of rd to SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  CDA13869  Potentilla glandulosa subsp. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-7 13727 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  HSC46104  Proboscidea louisianica J. P. Smith, J. O. Sawyer 1975-7-1 8152 Butte 5 mi. W of Dayton on the Ord Ferry Rd. Comment
  UC195483  Proboscidea louisianica subsp. louisianica A. A. Heller 1914-5-30 11467 Butte 6 mi nw Chico; Sacramento Valley Comment
  CDA6520  Proboscidea lutea E. Remmers 1961-7-5 Butte Oroville; 3350 Oro-Bangor Highway. 0 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
  CHSC52216  Prunella vulgaris var. lanceolata L. P. Janeway 1988-7-2 2941 Butte Marsh/ mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS119752  Prunus avium Lowell Ahart 2012-5-17 18083 Butte On both sides of the horse trail, between the paved park road and the dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  CHSC35090  Prunus persica S. Posner 1972-10-3 Butte Garden behind 725 Nord Ave., Chico. Comment
  CHSC2809  Prunus serotina Carl Pejsa 1958-3-15 89 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  CHSC90923  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
  CAS-BOT-BC357002  Pseudognaphalium luteoalbum Lowell Ahart 1979-12-29 2024 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC357006  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1529 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in large creek, ca. 23 mi s of Chico 30 Comment
  CHSC38353  Pseudognaphalium thermale Vernon Oswald 1983-8-10 975 Butte Upper Bidwell Park, Chico, on the n rim overlooking Sycamore Creek Canyon ca. 2200 ft w of the turn-around at the e end of the North Rim Trail. 390 Comment
  CHSC52384  Pseudognaphalium thermale R. L. Ondricek-Fallscheer 1982-10-30 161 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  CHSC6614  Pseudotsuga menziesii var. menziesii M. MacArthur 1968-6-17 302 Butte Parking lot NE of building V, Chico State College campus. 60 Comment
  UCD80116  Psilocarphus oregonus CNPS SN Foothill Team 2005-4-13 SNFN 0080 d Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  CHSC88055  Ptelea crenulata R. D. Fischer 2004-4-20 181 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off Guardian Trail, n. of Disk Golf Course. 313 Comment
  UC726637  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte near Forest Ranch Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC147770  Purshia tridentata var. tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC54356  Pycnanthemum californicum L. P. Janeway 1989-5-19 Butte Vicinity of Sawmill Peak; along Jordan Hill Road ca 7 3/4 mi n of Concow Road. 944 Comment
  UC478487  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 457 Comment
  CHSC46586  Pyrola asarifolia subsp. asarifolia V. Oswald; L. Ahart 1989-7-21 3880 Butte Meadow paralleling Humbud Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  SEINET178132  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  CAS-BOT-BC462603  Pyrola dentata A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  UC474258  Pyrola picta H. F. Copeland 1928-8-25 1018 Butte Jonesville, The Summit Jonesville Comment
  UCD117816  Pyrola picta L. E. Hazeltine 1916-7-30 s.n. Butte Sierra Nevada. 1828 Comment
  CHSC96645  Quercus X morehus Lowell Ahart 2007-3-28 13599 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  CHSC99581  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  CHSC6009  Quercus borealis M. MacArthur 1968-6-18 224 Butte Ca. 300 ft. NW of Big Chico Creek, by EP bld. entrance, Chico State College. 60 Comment
  CHSC30792  Quercus chrysolepis M. S. Taylor 1980-5-27 2659 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 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
  CHSC3255  Quercus douglasii Virginia Hagaman 1966-4-23 135 Butte 6 miles north of Chico on highway 32 at edge of road. Comment
  HSC32631  Quercus douglasii Gary S. Lester 1974-4-20 101 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CAS-BOT-BC86112  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of 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
  SEINET13953409 Image available Quercus garryana A. A. Heller 1915-1 11816 Butte Stony ridges and uplands in red clay near Cohasset, where it is the principal chaparral shrub near the upper limit of the dirger pine belt. Comment
  JEPS120043  Quercus kelloggii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18003 Butte East of the horse path, on the north side of the paved park road, southwest part of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SEINET10431579  Quercus kelloggii M. J. Williams 1967-4-22 s.n. Butte Near Feather Falls. 457 Comment
  CHSC3338  Quercus suber Robert L. Smith 1966-3-1 36 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC26694  Quercus vacciniifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1470 Butte On s side of Humboldt Rd, ca. 3 mi e of its jct with Scott's John Rd, n of Jonesville. 1828 Comment
  CHSC27951  Quercus wislizeni M. S. Taylor 1979-3-20 1937 Butte Ca. 1 mi n of jct of north fork Feather River, along an old road, ca. 10 mi n of Oroville. 304 Comment
  UC143209  Quercus wislizeni Mrs. R. M. Austin Apr 1896 781 Butte near Chico Comment
  UC5674  Quercus wislizeni W. H. Brewer Oct 1862 1473 Butte Table Mountain, near Oroville Comment
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Jan 19 2011
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  CHSC41523  Ranunculus alismifolius var. alismellus Kirsten Tarp 1983-8-27 361 Butte NE part of county n of Philbrook Reservoir at Coon Hollow. At margin of meadow. 1706 Comment
  CAS-BOT-BC379223  Ranunculus aquatilis var. aquatilis Lowell Ahart 1970-4-4 s.n. Butte Honcut, Peter Ahart Ranch 150 Comment
  CAS-BOT-BC379117  Ranunculus aquatilis var. diffusus Lowell Ahart 1981-8-15 3029 Butte 1.5 mi south of Snag Lake (about 3 mi south of Jonesville) 1500 Comment
  SEINET7073607  Ranunculus arvensis A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  CHSC37497  Ranunculus bonariensis var. trisepalus J. D. Jokerst; R. A. Schlising 1983-4-9 1711 Butte In the large vernal pool that is ca. 1/4 mile east of the south fork of Coal Cr. Canyon. Top of Table Mountain. 396 Comment
  CHSC1475  Ranunculus californicus Agnus Riker 1897-5-1 Butte Comment
  CHSC46790  Ranunculus cymbalaria var. saximontanus R. Schlising 1987-9-27 4545 Butte Along N. Fork Feather River, ca 1.25 mi S of crossing of Bear Ranch Creek by Hwy 70. 463 Comment
  CHSC38158  Ranunculus hebecarpus Vernon Oswald 1983-3-14 182 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 350 Comment
  CHSC31383  Ranunculus muricatus J. D. Jokerst 1979-4-20 1205 Butte Along the banks of a creek. Top of North Table Mt., ca. 200 met. N of Cherokee Rd. at the E edge of the mountain. 403 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  JEPS110344  Ranunculus occidentalis Lowell Ahart 2006-7-16 12997 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  POM219014  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. 1550 Comment
  CHSC43498  Ranunculus pusillus Lowell Ahart 1979-5-20 1882 Butte On the edge of a depression, on the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  CHSC52694  Ranunculus uncinatus var. uncinatus Kirsten Tarp 1983-8-6 334 Butte Near Butte Meadows, on Bull Hill Rd. 0.2 mi from its jct with Humboldt Rd. Near creek. 1325 Comment
  CHSC38031  Raphanus raphanistrum R. E. Preston 1982-11-5 362 Butte At roadside, n side of Cana Hwy, 100 yds e of Cana-Pine Creek Rd, Cana. 50 Comment
  CAS-BOT-BC74262  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  SEINET10493587  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-4-8 Taylor 3505 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  RSA2158  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville. 1677 Comment
  CAS-BOT-BC200684  Rhus aromatica Lewis S. Rose 1945-5-12 45026 Butte Richardson Springs 304 Comment
  SEINET3913006  Rhynchospora capitellata Vernon Oswald, Lowell Ahart 1990-7-31 4424 Butte Yellow Pine Forest: Flea Valley bordering Concow Road, about 4 miles north of Concow.; 0 1128 Comment
  CAS-BOT-BC111924  Rhynchospora glomerata var. minor Lowell Ahart 1980-7-20 2481 Butte At Little Bald Rock. 1100 Comment
  CHSC11906  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  SEINET10904148  Ribes nevadaense Mary Susan Taylor 1975-4-29 Taylor 548 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  UC569561  Ribes roezlii P. L. Johannsen 1936-7-16 925 Butte Bolt Creek Paynes Creek Quadrangle 1432 Comment
  RSA0024577  Ribes roezlii var. cruentum A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico. 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
  CAS-BOT-BC173953  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 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
  CAS-BOT-BC340982  Robinia pseudoacacia Lowell Ahart 1968-4-20 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC3420  Robinia pseudoacacia Judy Potter 1966-5-2 218 Butte Physical Science Bridge. Chico State College. Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  UC392242  Rorippa curvisiliqua E. B. Copeland 1929-7-29 Butte near Butte Creek House (Jonesville); , near Butte Creek House 1750 Comment
  CHSC113193  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC40443  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-20 4877 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 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
  JEPS124256  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-10-26 20591 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  CHSC31878  Rosa L. Ahart 1976-5-21 1115 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1592  Rosa californica R. M. Staley 1952-7-2 Butte Honey Run. 182 Comment
  CAS-BOT-BC148126  Rosa gymnocarpa Lowell Ahart 1983-9-21 4464 Butte Along French Creek, aobut 3 miles north of the sly Creek Dam, north of Strawberry Valley 900 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
  CHSC43210  Rosa multiflora L. P. Janeway 1987-5-20 2068 Butte Turnout and seep area on east side of hwy 70 just south of the 'Rock House' and 0.5 mi south of Jarbo Gap. 670 Comment
  CHSC43946  Rosa multiflora Vernon Oswald 1988-4-26 3283 Butte Gray Lodge Waterfowl Management Area, just s of Rutherford Rd., 0.5 mi w of Pennington Rd. On the ege of a ditch. 21 Comment
  CHSC55060  Rotala indica Lowell Ahart 1991-10-25 6731 Butte Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  SEINET13711421  Rotala ramosior Lowell William Ahart, Lowell William Ahart 1999-1 8170 Butte 12 Air Mi. SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UC1191575  Rotala ramosior Herbert L. Mason, Verne Grant 1946-8-15 13048 Butte Butte Sink, Greylodge Game Refuge, #833 Irrigation Ditch, near caretakers house Butte Sink; , Greylodge Game Refuge, #833 Irrigation Ditch Comment
  CDA37503  Rotala ramosior G. D. Barbe, J. McCaskill 1990-9-5 4369 Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC35970  Rubus armeniacus M. S. Taylor 1982-5-23 4516 Butte N side of Hwy 70, vicinity of Arch Rock Tunnel, ca. 0.5 mi sw of Butte-Plumas county line. 487 Comment
  CAS-BOT-BC148349  Rubus laciniatus Lowell Ahart 1984-6-10 4696 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC45813  Rubus laciniatus L. P. Janeway 1987-6-5 2136 Butte Along French Cr Rd at Little Ram Cr 3.0 mi NE of OroQuincy Hwy and Stanwood Saddle. 838 Comment
  CAS-BOT-BC148368  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-est of Feather Falls 914 Comment
  CHSC42426  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  RSA755442  Rubus ursinus L. Ahart 2009-5-23 15736 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC20503  Rumex acetosella M. S. Taylor 1975-4-24 526 Butte Abundant on n and w side of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  CHSC32114  Rumex acetosella L. Ahart 1977-5-2 1346 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  JEPS114963  Rumex acetosella Lowell Ahart 2008-5-8 14726 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 264 Comment
  SEINET10479372  Rumex acetosella Mary Susan Taylor 1978-7-21 Taylor 1806 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 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
  CHSC97332  Rumex obtusifolius L. P. Janeway 2007-7-30 9146 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1116 Comment
  RSA781353  Rumex pulcher Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 153 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CHSC38298  Sagina apetala Vernon Oswald 1983-4-4 279 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft e of the power lines. 249 Comment
  CHSC82440  Sagina apetala Lowell Ahart 2002-5-7 9617 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
  JEPS114591  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 238 Comment
  CHSC33659  Sagina saginoides R. A. Schlising 1981-7-28 4172 Butte N of Inskip in NE part of county; near junction of creek from Coon Hollow and W Branch of N Fork of Feather River. In creekbed margin. 1328 Comment
  UC935757  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13030 Butte Butte Sink; near big pond on Sacramento Outing Club Comment
  CAS-BOT-BC103451  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC21075  Salix exigua var. hindsiana M. S. Taylor 1975-10-3 935 Butte In Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC107836  Salix gooddingii J. T. Howell 1961-9-22 36737 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC103000  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 257 Comment
  UC1192302  Salix gooddingii Herbert L. Mason and Verne Grant 1946-8-8 12996 Butte Sanford Slough on Tule Gun Club; Butte Sink Comment
  JEPS107338  Salix lasiandra var. lasiandra Lowell Ahart 2005-4-2 11695 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
  CHSC112108  Salix lasiolepis Lowell Ahart 2012-6-5 18169 Butte On the east side of the dam, at the reservoir, 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. 298 Comment
  LA208766  Salix lasiolepis A. A. Heller; 1914-4-27 11324 Butte 8 mi N of Oroville Comment
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  RSA725027  Salix lasiolepis var. lasiolepis L. Ahart 2006-8-9 13147 Butte N side and 30 yards W of bridge across Stony Creek. Just N of Stonyford. 348 Comment
  CHSC42544  Salix melanopsis Lowell Ahart 1987-5-6 5539 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC176898  Salsola tragus John Thomas Howell 1975-6-15 51064 Butte Chico 60 Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 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
  CAS-BOT-BC235067  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  SD149113  Samolus parviflorus Lowell Ahart 1980-8-16 2579 Butte Near Honcut 60 Comment
  CHSC30875  Sanicula bipinnatifida J. D. Jokerst 1979-4-2 1170 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. East edge of Mt. 396 Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  CAS-BOT-BC223241  Sanicula bipinnatifida Clarence R. Quick 1954-7-31 54 -02 Butte Big Bar Mt. ridge east of Pulga Comment
  SEINET12120600  Sanicula bipinnatifida K. E. Warwick 1978-1 9 Butte ca 5 m S of Pentz Rd at intersection of Pentz Rd & Magalia-Pentz Hwy, ca 18 km N of Oroville Comment
  CHSC67150  Sanicula tuberosa James D. Jokerst; L. Ahart 1985-3-24 2179 Butte Rocky Ridge' ca. 1.33 mi NE of edge of Lake Concow on road to Flea Mtn. Comment
  JEPS113171  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (a 608 Comment
  UC600604  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville Comment
  CAS-BOT-BC436857  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436867  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  POM92827  Saxifraga californica C. C. Bruce 1897-1 2043 Butte Little Chico Comment
  SEINET12215661  Saxifraga californica Unknown 1977-1 77 Butte in Beaston Hollow, ca 2.4 km W of Cherokee Rd, 4.8 km E of Hwy 70, 7.6 km NE of Oroville 5 Comment
  POM354597  Saxifraga marshallii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC65191  Scandix pecten-veneris Lowell Ahart 1995-5-30 7586 Butte Along the edge of Beatson Hollow Creek, about 1 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC4397  Schoenoplectus acutus var. occidentalis R. Jaegel 1966-5-16 Butte Along the lake shore in Upper Bidwell Park. Near the golf course club house. Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC42769  Schoenoplectus tabernaemontani Lowell Ahart 1987-8-3 5846 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC56799  Scirpus congdonii L. P. Janeway 1987-6-26 2291 Butte At Rag Dump, Fall Creek. 1173 Comment
  CHSC41303  Scirpus diffusus S. C. Morey 1983-7-22 539 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC46317  Scirpus diffusus Vernon Oswald 1989-6-8 3805 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  CHSC40416  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS104047  Scirpus setaceus Lowell Ahart 2003-6-30 10337 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  SEINET10971844  Scirpus setaceus Lowell Ahart 1984-6-8 Ahart 4685 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  CHSC6093  Scribneria bolanderi A. R. Jaegel 1968-4-10 101 Butte W side of Cherokee Rd. and 1 mi s of Oregon City Rd. Comment
  SEINET10934975  Scribneria bolanderi Lowell Ahart 1985-5-15 Ahart 4971 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CHSC42833  Scutellaria californica L. P. Janeway 1987-6-5 2146 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at the rd along French Cr. 640 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CHSC43688  Scutellaria siphocampyloides Vernon Oswald 1984-6-5 1254 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood control gate. 79 Comment
  RSA20868  Sedella pumila C. B. Wolf 1937-3-29 8329 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  CHSC24643  Sedum spathulifolium S. Deaton 1976-4-23 37 Butte Ca. 1 3/4 mi n of Feather Falls trail parking lot, n side of trail. 853 Comment
  CAS-BOT-BC62124  Selaginella hansenii A. A. Heller 1913-4-6 10715 Butte Hills near Big Chico Creek, east of Chico Comment
  SEINET11718081  Selaginella hansenii Unknown 1981-1 20 Butte Paradise Quad 335 Comment
  SEINET10474901  Senecio aronicoides Mary Susan Taylor 1979-7-21 Taylor 2163 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SD5874  Senecio cymbalarioides E. B. Copeland 1930-6-27 Butte Jonesville. In wet meadows, among sedges and grasses. 1550 Comment
  SEINET10475268  Senecio layneae Lowell Ahart 1985-1 Butte Comment
  CHSC94012  Senecio sylvaticus R. Fischer 2005-4-30 675 Butte Collection from along Hwy. 32, ca. 5 miles north of Chico on the Big Chico Creek Ecological Reserve, on a canyon edge trail called the Overlook. 518 Comment
  JEPS121978  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. Comment
  CHSC101284  Senecio vulgaris Lowell Ahart 2009-4-17 15539 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC101994  Senecio vulgaris J. M. Lund 1980-2-21 18 Butte Southwest corner of Esplanade and East Ave. approximately 200 ft west of the intersection within city limits. 76 Comment
  CHSC108821  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  CHSC85  Sequoia sempervirens V. Holt 1958-2-26 Butte College Campus. 54 Comment
  CHSC34158  Sericocarpus oregonensis Lowell Ahart 1981-8-31 3053 Butte S of the jct of Black Bart Rd and Oroville-Forbestown rd, ca. 10 mi W of Forbestown. 750 Comment
  CHSC26447  Setaria pumila P. Moyer 1971-10-24 48 Butte CSUC Campus. Creek area behind Archeology Bldg. 'B. 60 Comment
  SEINET10609527  Setaria pumila Roland McKee 1918-8-12 McKee s.n. Butte Weed in alfalfa plots, Plant Industry Station, Chico. Comment
  UCD92849  Setaria viridis L. E. Hazeltine 1916-7-3 s.n. Butte Chico. Comment
  CHSC25051  Sherardia arvensis G. N. Steger 1972-4-15 Butte At edge of Cherokee road about 4 mi S of Cherokee, on North Table Mt. 396 Comment
  CHSC38661  Sherardia arvensis Vernon Oswald 1983-3-19 196 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 1000 feet W of the E end of Upper Park Rd. 207 Comment
  CDA6646  Sherardia arvensis L. Ahart 2002-5-7 9643 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 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
  UCD122004  Sherardia arvensis H. Clem Meith 1968-5-20 s.n. Butte Oroville. Comment
  CHSC1051  Sidalcea asprella V. Holt 1941-5-10 Butte Forbestown. 838 Comment
  CHSC29405  Sidalcea asprella R. A. Schlising; R. Banchero 1980-6-19 3746 Butte N of Oroville and S of Concow Res., 0.3 mi N of Concow School (which is at jct Nelson and Concow Roads). 518 Comment
  UC220520  Sidalcea diploscypha H. E. Brown May 1-15 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  CHSC12946  Sidalcea glaucescens K. R. Stern 1974-6-30 5776 Butte Vic. of Jones Creek at Jonesville. 1371 Comment
  UC725669  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte upper end of Snag Lake 1524 Comment
  CHSC23468  Sidalcea hartwegii J. R. Lee 1974-4-20 2 Butte On hill sw of Covered Bridge 7.2 mi from the Chico city limits on Honey Run Road. 137 Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  JEPS93900  Sidalcea hartwegii Lowell Ahart 1998-6-9 7992 Butte about 7 air mi n of Oroville (about 300 yards w of the Ione oak tree, w of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  POM84282  Sidalcea hartwegii C. C. Bruce 1897-05 1873 Butte Forest- Ranch. Comment
  SEINET11985470  Sidalcea hartwegii Unknown 1978-1 18 Butte ca 0.5 mi E of Chico Municipal Airport & 1 mi SE of Mud Creek, 5 mi N of Chico 37 Comment
  UCD14327  Sidalcea hartwegii Katherine Courtney 1983-5-15 14 Butte Butte Co., along Highway 70, 4 miles south-west of Oroville, 200 ft. north of the Polermo Road intersection; Comment
  CHSC116567  Sidalcea hirsuta B. Castro; Robin Carter 2016-4-14 2129 Butte Sacramento Valley. CA 2 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.1 mi SSW of the Oroville Airpor, off N edge of SE protion of the Thermalito Afterbay, near S end of old Wilbur Road. 42 Comment
  CHSC34959  Sidalcea hirsuta R. A. Schlising 1981-5-3 4045 Butte N of Chico, slightly E of Highway 99; just N of Meridian Road. Comment
  UC725525  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  UC726734  Sidalcea hirsuta A. A. Heller 1939-5-1 15388 Butte Feather River below Stirling (near the Cana Road, border of a pond along U.S. Highway #99E) Comment
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Mar 1 2016
  UC763986  Sidalcea hirsuta R. F. Hoover 1937-5-19 2241 Butte 10 mi nw Chico; nw of Chico Comment
  UCD80451  Sidalcea malviflora CNPS SN Foothill Team 2005-5-24 SNFN 0172 b Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico Creek, about 75 m from the canyon rim. 338 Comment
  RSA87487  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mile E. of Forbestown. Comment
  CHSC29963  Sidalcea oregana subsp. spicata R. A. Schlising 1980-6-26 3786 Butte Chico Meadows, S of Scout Road, 1.1 mi N of Butte Meadows junction of Skyway and Humboldt Roads. 1310 Comment
  CHSC96830  Silene bridgesii Lowell Ahart 2007-5-29 13946 Butte At the Dome Trail head, trail leads to the Middle Fork of the Feather River, Dome Trail head is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC33182  Sinapis arvensis R. E. Preston 1981-1-20 32 Butte Along irrigation ditch on w side of Chico-Butte City Hwy, ca. 2.3 km s of Ord Ferry Rd., ca. 14 km ssw of Chico. Comment
  CHSC4649  Sinapis arvensis R. Carter 1966-4-2 323 Butte Found ca. 7 mi. E of Oroville e at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC480  Sinapis arvensis E. Canfield 1904-4-23 Butte Hooker Oak field. 76 Comment
  CHSC11380  Sisymbrium officinale Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35757  Sisymbrium orientale R. E. Preston 1982-6-9 299 Butte On w side of The Esplanade at bridge over Chico Creek, Chico. 59 Comment
  CHSC52361  Sisyrinchium bellum L. P. Janeway 1989-5-17 3240 Butte Along Forbestown Rd 9.2 mi E of Oroville-Quincey Hwy; 0.1 mi W of Lower Forbestown Rd. 798 Comment
  RSA718077  Sisyrinchium bellum Lowell A. Ahart 2006-7-16 12998 Butte on the northwest edge of Willow Creek, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northwest of Butte Meadows 1516 Comment
  CHSC46532  Sisyrinchium elmeri Lowell Ahart 1984-7-19 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. 1584 Comment
  JEPS88523  Smilacina racemosa Lowell Ahart 1996-6-5 7683 Butte about 1/10 mi n of the bridge across the South Fork of the Feather River (about 1 mi n of Golden Trout Crossing, about 7 air mi e of Feather Falls, on the east side of river) 914 Comment
  CHSC38883  Smilax californica Vernon Oswald 1983-5-11 468 Butte Upper Bidwell Park, Chico, bordering the golf course s of Chico Creek and e of the footbridge. 91 Comment
  CHSC40897  Solanum americanum Lowell Ahart 1985-11-5 5225 Butte About 90 feet below the high water line of Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the F eather River. 274 Comment
  CHSC42105  Solanum americanum Lowell Ahart 1986-11-9 5440 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS119632  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  JEPS120503  Solanum rostratum David Scofield Wilson 2012-8-25 Butte Sacramento Valley. City of Chico; volunteer plant in backyard of 648 Bryant Avenue. Comment
  CDA35762  Solanum rostratum J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330072 Butte Chico; Rancho Llano Seco. 0 Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  SEINET260320  Solidago californica Lowell Ahart 1988-7-24 6130 Butte Ca 1/20 mi NE of the intersection of Ponderosa Way and Lower Forbestown Rd W of Sunset Hill 732 Comment
  SEINET10475256  Solidago canadensis subsp. elongata Mary Susan Taylor 1982-8-16 Taylor 4988 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC30664  Solidago elongata M. S. Taylor 1978-7-21 1832 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte County-Plumas County line. 1341 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC422  Solidago velutina subsp. californica E. Walker 1932-8-21 Butte Paradise. Comment
  CHSC107249  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC37529  Sonchus tenerrimus M. S. Taylor; L. Ahart 1982-10-11 5050 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC100941  Sorbus scopulina var. cascadensis R. A. Schlising; J. D. Jokerst 1982-8-31 4380 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  CHSC108150  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. In an open graveled area. 912 Comment
  CHSC42488  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC92509  Spergularia rubra Lowell Ahart 2005-12-11 12512 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  RSA0098132  Spergularia rubra L. Ahart 2008-5-8 14712 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC390596  Spergularia rubra Clarence R. Quick 1963-7-16 63 53 a Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  SBBG28490  Spiraea douglasii E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  CAS-BOT-BC149709  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  UCD150368  Spiranthes romanzoffiana William Anderson 1965-6-6 s.n. Butte Table Mtn. Comment
  JEPS110395  Spiranthes stellata Lowell Ahart 2006-8-15 13183 Butte Near the center of a large open meadow with bogs, about 70 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
  CHSC43643  Stachys ajugoides var. rigida B. Castro 1987-7-19 152 Butte In Coon Hollow, 1.65 mi e of W. Branch Feather R. crossing of Coon Hollow Rd. Ca 100' along Coon Hollow Rd. at edge of large meadow. 1767 Comment
  CHSC52068  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 276 Butte By Humboldt/Humbug Rd. Ca. halfway between the Willow Ck and Scotts John Ck crossings. 1798 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CHSC809  Stachys ajugoides var. rigida V. Holt 1952-7-9 Butte 56 Comment
  UCR51781  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte Butte Co. 287 Comment
  CAS-BOT-BC175314  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  UC1594588  Stellaria borealis subsp. sitchana Lowell Ahart 1992-6-26 6779 Butte about 0.5 mi nw Merrimac (on e side of Rogers Cow Camp) 1219 Comment
  CHSC11852  Stellaria longifolia E. B. Copeland 1931-1-1 638 Butte Jonesville. In meadows. 1500 Comment
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May 18 2006
  CHSC230  Stellaria media S. Carter 1929-4-22 Butte Chico Street. 59 Comment
  CAS-BOT-BC395117  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte S of Lumpkin Ridge Road, 1.5 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 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
  CHSC39611  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  SEINET10866384  Stellaria nitens Mary Susan Taylor 1981-4-5 Taylor 3501 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
  POM219119  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  CHSC96617  Stellaria pallida Lowell Ahart 2007-3-12 13591 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  JEPS104645  Stephanomeria elata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  RSA0118747  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  UC1609219  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte w side of dirt road about 1/4 mi nw Camp 18 (about 5 air mi ne of Feather Falls) 1219 Comment
  CDA42907  Stipa miliacea var. miliacea L. 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
  JEPS98677  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte 3 mi SE of Paradise (below the high water line of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 271 Comment
  CAS-BOT-BC87425  Streptanthus polygaloides Lewis S. Rose 1939-6-7 39248 Butte North Fork of Feather River, 3 miles south of Pulga. 609 Comment
  CAS-BOT-BC87426  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC86434  Streptanthus polygaloides Jenny Marr 1994-6-13 89 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC87515  Streptanthus tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Oroville Ranger Station. Bald Rock Compartment. Upper end of Galen Ridge. 1036 Comment
  CHSC36698  Streptanthus tortuosus R. E. Preston 1982-6-18 305 Butte Ca. 1 mi n of the site of Merrimac, ca. 23 mi ne of Oroville. 1371 Comment
  CHSC23650  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1976-4-24 1071 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CAS-BOT-BC48062  Styrax redivivus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  HSC66094  Styrax redivivus M. S. Taylor 1980-5-27 2699 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  SEINET11933193  Suaeda nigra Unknown 1983-1 4452 Butte ca 0.12 mi S of the Graylodge Wildlife Refuge HQ, ca 12 mi SW of Gridley 35 Comment
  CHSC2409  Swertia albicaulis var. nitida R. Carter 1965-6-21 260 Butte Found 3.2 mi. S of Mountain House on Oroville-Quincy Rd., on W side of road, on steep bank beside road. 914 Comment
  CHSC51881  Swertia albicaulis var. nitida L. P. Janeway 1987-6-20 2269 Butte Top of Lumpkin Ridge 1.4 mi S of the Feather Falls-Lumpkin Ridge Rd. 1226 Comment
  UCSB13228  Swertia albicaulis var. nitida Dearing, Hugh; Dearing, Margaret 1938-6-21 Butte 21 mi. N. of Chico; nr. Lone Pine Lookout; Butte Co., Calif 1219 Comment
  UC175550  Symphoricarpos mollis var. acutus A. A. Heller 1913-6-7 10802 Butte near Stirling 1074 Comment
  CHSC33645  Symphyotrichum bracteolatum M. Merryman; R. Banchero 1979-9-2 29 Butte Humboldt Rd at Butte Creek, 5.3 mi NE of jct Hwy 32 and Humboldt Rd. 1341 Comment
  CAS-BOT-BC97692  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Wyandotte Lake, E of Oroville 450 Comment
  CHSC31584  Symphyotrichum chilense Lowell Ahart 1977-9-20 1572 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC98088  Symphyotrichum spathulatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  UC1564747  Symphyotrichum spathulatum V. Oswald and L. Ahart 1989-8-15 3941 Butte ca. 1.2 mi air n of, Soda Ridge Road 1.4 mi w of its junct. w/ Coon Hollow Rd. Philbrook Resevoir 1737 Comment
  CHSC69670  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-16 3122 Butte West Branch of the Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CHSC110351  Symphyotrichum subulatum var. parviflorum B. Castro; Margie Graham 2006-9-7 1610 Butte Sacramento Vall