Search Results — 2000 specimen records retrieved (1598 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  CHSC51842  Acer circinatum L. P. Janeway 1988-7-2 2938 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  UC426916  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 423 Butte Jonesville Jonesville (on shady side of high ridge) 2100 Comment
  CHSC38254  Acer macrophyllum Vernon Oswald 1983-4-1 256 Butte Upper Bidwell Park, Chico in the wooded strip s of the creek and e of the footbridge at the Golf Course. 91 Comment
  JEPS115154  Acer macrophyllum Lowell Ahart 2009-11-19 16550 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
  CHSC7127  Acer negundo var. californicum Lynn R. Thomas 1969-3-23 15 Butte N bank Big Chico Creek at junction of Stewart and Bidwell Ave., ca. 0.5 mi w of Chico. 60 Comment
  CHSC20504  Acer saccharinum M. S. Taylor 1975-5-6 555 Butte Ca. 100 ft e of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. 60 Comment
  CAS-BOT-BC21701  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC210634  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC44461  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 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
  JEPS113329  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  CHSC105272  Achyrachaena mollis Lowell Ahart 2010-6-20 16822 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  SEINET11838910  Achyrachaena mollis Unknown 1978-1 13 Butte Small population ca 2 mi N of Chico on State Hwy. 99 67 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  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
  UCSB63729  Acmispon brachycarpus Neuman, Lance 1987-4-12 Butte ca. 400 yd N of Horseshoe Lake Comment
  CHSC98960  Acmispon parviflorus Lowell Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC4197  Acmispon wrangelianus J. Senter 1967-4-4 20 Butte Abundant 1 mi. E. of Hwy . 99E and Skyway interchange along roadway. 45 Comment
  CHSC33336  Aconitum columbianum R. Banchero 1980-8-1 330 Butte 0.4 mi w of the e end of Philbrook Lake, 4.3 mi se of the jct of Skyway and Philbrook Rd. Mdw. 1706 Comment
  UC1594727  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte ca. 2 (air) mi. n Snow Mt. (ca. 1/2 mi. n. of Carr Mine) 1767 Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  CAS-BOT-BC418782  Aconogonon phytolaccifolium A. A. Heller 1914-8-8 11672 Butte At Jonesville 1524 Comment
  CHSC52113  Aconogonon phytolaccifolium L. P. Janeway 1988-7-29 3105 Butte Above bank of Butte Cr at Butte Meadows, crossing of Bull Hill Rd (The Skyway). 1325 Comment
  CAS-BOT-BC29853  Adenocaulon bicolor H. F. Copeland 1900-8-1 189 Butte Jonesville woods 1219 Comment
  CAS-BOT-BC29854  Adenocaulon bicolor H. F. Copeland 1928-8-18 399 Butte near Jonesville 1524 Comment
  UC203816  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  RSA122230  Adenostoma fasciculatum var. fasciculatum A. E. Wieslander 1936-3-30 626 Butte Keefer Ridge 549 Comment
  CHSC20256  Adiantum aleuticum G. S. Ellmore 1972-4-20 136 Butte On Humbug Road ca. 13 km. Ne of Covered Bridge ca. 30 m. e of roadside. Comment
  CHSC4632  Adiantum aleuticum R. Carter 1966-4-26 461 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  UC1562402  Adiantum aleuticum Vernon Oswald and Lowell Ahart 1990-6-20 4308 Butte between Philbrook Reservoir and Carr Mine (ca 0.5 mi w of Butte-Plumas Co line, s side of Philbrook Creek) 1981 Comment
  CHSC27957  Adiantum jordanii M. S. Taylor 1979-3-20 1942 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca.10 mi n of Oroville. 304 Comment
  CDA1641  Aegilops cylindrica D. Conway Jun 1991 Butte Butte College campus, 3536 Butte Campus Drive, 4 miles east of Durham on Durham-Penz Road 0 Comment
  CAS-BOT-BC110727  Aegilops triuncialis Lowell Ahart 1980-5-10 2227 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, 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. 298 Comment
  CAS-BOT-BC202593  Aesculus californica A. A. Heller 1913-5-25 10756 Butte Near Pents 152 Comment
  CHSC45668  Ageratina occidentalis V. Oswald; L. Ahart 1988-8-16 3693 Butte Ca. 5 mi (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC32364  Agoseris retrorsa J. D. Jokerst 1980-4-7 564 Butte E of the junction of Upper Rocky Honcut Cr and Sweedes Flat Rd. ca 110 m E of the road. Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  RSA32872  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling. 1075 Comment
  CHSC102822  Agrostis exarata Lowell Ahart 2009-6-3 15829 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC113411  Agrostis exarata Lowell Ahart 2014-7-10 19640 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10789979  Agrostis exarata Lowell Ahart 1982-1 Ahart 3823 Butte On damp red granite soil & on a steep shaded road bank along dirt road by Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam, ca. 1/2 mi NW of Strawberry Valley. Yellow Pine Forest. 1100 Comment
  UCD149814  Agrostis gigantea William Anderson 1965-6-20 s.n. Butte Canyon Creek. Comment
  JEPS110248  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  SEINET10507108  Agrostis microphylla Mary Susan Taylor 1980-5-27 Taylor 2692 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10510279  Agrostis microphylla Lowell Ahart 1988-5-28 Ahart 6007 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville, Butte County. Uncommon. Valley Grassland. 37 Comment
  CDA34632  Agrostis pallens L. Ahart 2009-6-19 15929 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS106268  Agrostis stolonifera Lowell Ahart 2004-7-23 11306 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  JEPS93859  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC47976  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Lower foothills, eastern outskirts of Oroville Comment
  CAS-BOT-BC48025  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Foothills, east of Oroville Comment
  CHSC118445  Aira caryophyllea L. P. Janeway 2016-5-9 11952 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Pondosa Way and Road 19N19. 701 Comment
  SEINET10868764  Aira caryophyllea Lowell Ahart 1987-5-6 Ahart 5546 Butte On dry sand and silt, on gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC138408  Aira caryophyllea var. capillaris M. S. Taylor; J. D. Jokerst; L. Ahart 1980-4-6 2442 Butte Old road ca. 100 feet west of Rocky Honcut Creek, ca. 1/8 mile north of Swedes Flat Road, ca. 2 miles east of Oroville-Bangor Highway, ca. 10 miles southeast of Oroville. 365 Comment
  CAS-BOT-BC138413  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2174 Butte Thermalito. 65 Comment
  CDA43009  Albizia julibrissin L. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, 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. Comment
  RSA0058867  Albizia julibrissin Lowell A. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, 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. 31 Comment
  CHSC113209  Alisma lanceolatum Lowell Ahart 2014-4-25 19405 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CAS-BOT-BC445433  Alisma triviale Lowell Ahart 1986-11-9 5449 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  SEINET10839999  Alisma triviale Mary Susan Taylor 1975-10-3 Taylor 922 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC36906  Allium amplectens Marc Hayes; R. Schlising 1978-5-22 3266 Butte NW part of county, n of Chico; along Cohasset Hwy, 4.3 mi n o f Mud Creek. Comment
  CHSC4638  Allium amplectens R. Carter 1966-4-21 354 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi from Chico Rd. 274 Comment
  CHSC90049  Allium amplectens Laurie L. Gordon 1991-4-17 10 Butte 3 mi e of Hwy 99, ca. 250 ft s of Hwy 32. 54 Comment
  JEPS116048  Allium amplectens Lowell Ahart 2009-4-17 15560 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  UC3060  Allium amplectens Mrs. Bruce May 1898 1898 Butte Little Chico Butte Comment
  CAS-BOT-BC460729  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  CAS-BOT-BC465440  Allium campanulatum E. B. Copeland 1937-5-30 s.n. Butte Jonesville Comment
  CAS-BOT-BC465445  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte Summit above Jonesville 2133 Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  UCD18737  Allium cratericola Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 30 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CAS-BOT-BC466714  Allium cratericola Gladys L. Smith 1973-1-1 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  CHSC62604  Allium jepsonii B. Castro 1993-8-3 491 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  CHSC74028  Allium jepsonii E. Hubert 1997-7-23 Butte Ca 7 air mi NW of Brush Ck, 0.5 mi E of Hungry Hunt Peak, 50 ft W of USFS Rd 23N28. 1103 Comment
  CDA13302  Allium membranaceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13150 Butte Plumas National Forest; Above USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CAS-BOT-BC472969  Allium membranaceum Lowell Ahart 1984-6-10 4698 Butte Along road to Forbestown Diversion Dam; near a small stream, along the road about 2 miles southwest of the Forbestown Diverson Dam, northeast of Forbestown. 700 Comment
  SBBG17065  Allium peninsulare M. Vincent 1962-4-15 193 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  CAS-BOT-BC132071  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. Se. of Oroville on road to Wyandotte 121 Comment
  CHSC33261  Allium sanbornii var. sanbornii R. A. Schlising 1980-9-11 3990 Butte 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CAS-BOT-BC475440  Allium serra A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville in the Sierra foothills Comment
  CAS-BOT-BC476714  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CAS-BOT-BC262  Allocarya austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC27033  Allophyllum divaricatum Robert A. Schlising 1978-6-11 3291 Butte Along Cohasset Rd, below Cohasset, 5.5 mi NE of crossing of Mud Cr and 5.3 mi NE jct of rd to Richardson's Springs; ridge top. Comment
  SEINET12329560  Allophyllum divaricatum Unknown 1984-1 4664 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yello Pine Forest 370 Comment
  CHSC35100  Allophyllum integrifolium R. A. Schlising 1980-7-16 3911 Butte NE of Butte Meadows and SW of Jonesville, near Cherry Hill Campground. At Butte Creek streamside. Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CHSC49506  Alopecurus carolinianus Vernon Oswald 1988-4-13 3271 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC83959  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  JEPS107324  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC31727  Alopecurus saccatus L. Ahart 1980-5-10 2236 Butte Ca. 2.5 mi n and 1/8 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  UCD80510  Alopecurus saccatus CNPS SN Foothill Team 2005-4-12 SNFN 0077 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET11665626  Alopecurus saccatus Unknown 1978-1 1705 Butte E of large parking area, on top of North Table Mountain, ca 7 mi N of Oroville 396 Comment
  CHSC51344  Amaranthus californicus Vernon Oswald 1990-8-14 4431 Butte West Branch of Lake Oroville, Vinon Gulch access, 0.5 mi north of Cherokee. Occasional on and along the track below the lower end of the paved launching ramp. 259 Comment
  CHSC21247  Amaranthus retroflexus M. S. Taylor 1975-6-21 777 Butte In field at end of Citrus Ave, between 11th and 12th aves, Chico. 60 Comment
  CHSC92456  Amaranthus retroflexus Lowell Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC76264  Amaranthus rudis Lowell Ahart 1999-9-21 8267 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
  POM220123  Amelanchier pallida H. F. Copeland 1928-8-18 459 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  SEINET10483111  Amelanchier pallida Mary Susan Taylor 1978-7-19 Taylor 1746 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC80576  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC111158  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte On both sides of a small drainage, about 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  SBBG126075  Amsinckia lycopsoides L. Ahart 2012-4-20 17889 Butte S of the trail, ca 50 yards E of Big Chico Crk, ca 100 yards W of Ten Mile House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 202 Comment
  UC726987  Amsinckia lycopsoides A. A. Heller 1939-3-23 15354 Butte near Wick's Corner (along the Highway) Comment
  UC172842  Amsinckia menziesii var. menziesii A. A. Heller 1913-4-7 10725 Butte hills 6 mi n Oroville Comment
  SEINET10449591  Anagallis arvensis Mary Susan Taylor 1975-4-26 Taylor 517 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC31625  Andropogon virginicus var. virginicus L. Ahart 1973-11-1 286 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10454783  Angelica californica Mary Susan Taylor 1980-9-12 Taylor 3335 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC29228  Aphanes occidentalis M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2440 Butte In old road, ca. 500 yds n of Swedes Flat Rd, ca. 50 ft w of Rocky Honcut Creek, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi s of Oroville. 365 Comment
  CDA39737  Apocynum androsaemifolium Vernon H. Oswald & Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 miles west of Four Trees. Comment
  JEPS115883  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 Butte On damp soil, 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
  CAS-BOT-BC392106  Aquilegia formosa Lowell Ahart 1984-6-10 4703 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC52687  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 362 Butte NE part of county N of Philbrook Resevoir at Coon Hollow. 1706 Comment
  CHSC58257  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte Below the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  JEPS124181  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  CHSC108749  Arceuthobium campylopodum B. Castro; L. P. Janeway 2002-7-7 1378 Butte High Cascade Range. Along logging spur road, 2.1 mi NE of Bald Mountain Lookout and 0.6 mi SW of Jones Meadow. 1798 Comment
  CHSC43229  Arceuthobium campylopodum Lowell Ahart 1987-9-18 5886 Butte About 1 mile southwest of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  CHSC44138  Arceuthobium campylopodum V. Oswald; L. Ahart 1988-7-29 3633 Butte Beside the road connecting Humboldt and Humbug Rds. at a point 0.9 mi w of Humbug Rd, ca. 3 mi (air) e of Jonesville. 1804 Comment
  RSA629064  Arctostaphylos Jon E. Keeley 1983-6-27 7818 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA633003  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27446 Butte East of Chico, Cohasset Road. 170 Comment
  RSA633005  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27462 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51984  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 54541 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  UCD52246  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51564 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38868  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51111 Butte Paradise, Skyway and Wagstaff Road 609 Comment
  RSA122404  Arctostaphylos manzanita subsp. manzanita J. E. Sowder 1933-11-27 134 Butte 2 mi. N. 1/4 mi. E. of Hog Spring. 335 Comment
  RSA20916  Arctostaphylos mewukka C. B. Wolf 1937-3-29 8340 Butte 3.5 mi. below Magalia on Oroville Road. 488 Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  CAS-BOT-BC38604  Arctostaphylos mewukka subsp. truei A. A. Heller; H. E. Brown 1902-5-8 s.n. Butte Berry Canyon, near Clear Creek Comment
  CHSC11941  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CAS-BOT-BC46716  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  UCD52615  Arctostaphylos viscida John Thomas Howell 1975-6-15 51108 Butte Skyway near Billie Road, Paradise, Butte County, Transition Zone. 609 Comment
  SEINET10973472  Arctostaphylos viscida Mary Susan Taylor 1981-3-31 Taylor 3456 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC47372  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51093 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47375  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51088 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48287  Arctostaphylos viscida subsp. viscida R. R. Kehlor 1951-4-14 25 Butte foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road. Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  CDA31420  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville Comment
  CHSC72253  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  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
  RSA638246  Aristolochia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 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
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of lake Oroville, about 1/4 mile north east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  RSA769225  Artemisia douglasiana L. Ahart 2009-11-19 16554 Butte East side of Big Chico Creek, southwest of meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC109058  Arum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17904 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC91262  Asarum lemmonii L. P. Janeway; David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump. 1134 Comment
  UC116650  Asarum lemmonii Mrs. R. M. Austin June 1896 153 Butte Lomo Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  UC474224  Aspidotis californica H. F. Copeland March, 1926 Butte near Chico (Iron Canyon) Comment
  CAS-BOT-BC65912  Aspidotis densa Clarence R. Quick 1964-7-9 64 -53 Butte north of Jarbo Gap Comment
  CAS-BOT-BC65915  Aspidotis densa John Thomas Howell 1959-9-26 35093 Butte Pulga Bridge, N. Fk. Feather River 411 Comment
  CDA13891  Aspidotis densa G. F. Hrusa, T. D. Wilfred 1997-5-8 13748 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC28626  Aspidotis densa M. S. Taylor 1979-3-19 1926 Butte In vicinity of Pulga bridge over Hwy 70 over Feather River, ca. 25 mi ne of Oroville. 487 Comment
  CHSC40387  Aspidotis densa Lowell Ahart 1985-5-15 4981 Butte About 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  SEINET10470239  Aspidotis densa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4736 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
  SEINET11716730  Aspidotis densa M. S. Taylor 1980-1 2373 A Butte ca 100 ft SW of Pulga bridge over Hwy 70, ca 28 mi NE of Oroville 488 Comment
  SEINET10475264  Aster alpigenus subsp. andersonii Mary Susan Taylor 1978-6-24 Taylor 1667 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CDA10331  Aster oregonensis T. C. Fuller 1958-7-7 1912 Butte 1 mile north of Pulga Station. 0 Comment
  CAS-BOT-BC178470  Astragalus gambelianus John Thomas Howell 1967-6-22 42625 Butte Magalia, Sierra Nevada 701 Comment
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  SEINET10452224  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4851 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC27665  Astragalus pauperculus Mike O'Bryan; Robert A. Schlising 1978-4-17 3220 Butte N of Forest Ranch, on ridge projecting into canyon of Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CHSC43882  Astragalus pauperculus L. P. Janeway 1988-5-8 2661 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Drive, 2 mi north of Ten Mile House. 594 Comment
  CHSC11861  Asyneuma prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville. 1500 Comment
  JEPS104144  Athyrium filix-femina Lowell Ahart 2003-8-26 10544 Butte On the w side of the dirt road, w of where Pinkard Creek flows into the Lost Creek Reservoir, ca 3/8 mi n of the Lost Creek Reservoir Dam, 1 1/8 mi (air) sw of the Sly Creek Reservoir Dam. 996 Comment
  CAS-BOT-BC68696  Athyrium filix-femina var. californicum Clarence R. Quick 1952-7-1 52 -122 Butte Sierra Nevada - Mill Creek Road between Feather River Highway and Coyote Gap Comment
  SEINET11718751  Athyrium filix-femina var. californicum Unknown 1985-1 5149 Butte E of dirt road to Forbestown Res., ca 2.5 mi NE of Forbestown 869 Comment
  CHSC69712  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS90671  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road, 100 ft s of Parking Lot 5 on Rutherford Road, 0.5 mi w of Pennington Road); Gray Lodge Wildlife Management Area 21 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC176605  Atriplex serenana var. serenana A. A. Heller 1919-8-9 13350 Butte In gardens at Chico Comment
  CAS-BOT-BC146182  Avena barbata Lowell Ahart 1989-5-10 6216 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC40643  Avena barbata Ahart; Jokerst 1985-3-24 4865 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC9343  Avena fatua B. Anthony 1968-4-14 456 Butte 3 miles E. of Hamilton City on Hwy. 32. Comment
  CHSC2123  Avena sativa H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. Chico. 57 Comment
  CHSC85438  Baccharis pilularis R. D. Fischer 2003-11-30 17 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  UC893677  Baccharis salicifolia subsp. salicifolia A. A. Heller 1914-3-28 11241 Butte 12 mi se of Chico; Dry Creek Comment
  CHSC37134  Bacopa rotundifolia L. Ahart 1982-6-27 3652 Butte Peter Ahart Ranch, ca 2 1/4 mi n and 1/4 mi e of Honcut. 50 Comment
  CHSC48971  Bacopa rotundifolia Vernon Oswald 1988-8-8 3683 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC3527  Balsamorhiza deltoidea John Francis 1966-4-30 144 Butte 3.4 miles E of Forest Ranch on Hwy 32. Comment
  CHSC36680  Barbarea orthoceras R. E. Preston 1982-6-25 317 Butte On the bank of Kanaka Cr; in n meadow at site of Powellton, ca. 3 mi nw of Stirling City. 1097 Comment
  CHSC48313  Barbarea orthoceras Vernon Oswald 1987-4-6 2306 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. Flood plain of the creek. 80 Comment
  UC397037  Barbarea orthoceras E. Copeland 1929-7-15 Butte Jonesville Butte Creek (along Butte Creek) 1550 Comment
  CHSC33725  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-10 3525 Butte S side of private rd, ca. 1/8 mi e of its jct with Ponderosa Way, ca. 4 mi n of Jarbo Gap on Hwy 70. 914 Comment
  UC725880  Berberis aquifolium var. repens A. A. Heller 1939-4-8 15365 Butte 2 mi e Magalia (on the Coutolene rd) Comment
  JEPS104017  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles SE of Oroville. Comment
  JEPS122318  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east Oroville. Comment
  SEINET3449099  Bergia texana Unknown 2002-12-6 10021 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 20 Comment
  UC1586529  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. Comment
  CAS-BOT-BC102165  Bidens John Thomas Howell 1959-9-20 34665 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  UC171397  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte on Big Chico Creek, Chico Chico, Big Chico Creek Comment
  SEINET10839335  Bidens frondosa Mary Susan Taylor 1979-10-2 Taylor 2208 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC51898  Bistorta bistortoides L. P. Janeway 1988-7-29 3126 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  SEINET11836643  Blennosperma nanum Unknown 1978-1 12 Butte ca 20 yds N of Skyway, 3.7 mi E of jct Hwy 99 & Skyway, 6.7 mi SE of Chico 207 Comment
  RSA0036032  Blennosperma nanum var. nanum Lowell A. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  RSA0084097  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC38021  Boechera breweri R. E. Preston 1981-6-13 87 Butte S side of canyon, middle fork of Feather River at Milsap Bar, ca. 20.5 mi NE of Oroville. 609 Comment
  CAS-BOT-BC16036  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 0259 Butte 100 meters southeast of Little Chico Creek. 243 Comment
  CAS-BOT-BC14635  Boechera rectissima H. F. Copeland 1931-6-10 1518 Butte Jonesville. 1524 Comment
  UCD114430  Boechera rectissima R. E. Preston 1981-7-8 104 Butte ca. 15 m e of Humboldt Rd, ca. 4.2 km nne of Jonesville. 1970 Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  CHSC34780  Bolboschoenus maritimus subsp. paludosus L. Ahart 1981-11-6 3226 Butte Small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC46319  Bolboschoenus maritimus subsp. paludosus Vernon Oswald 1989-6-6 3798 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Field on the n side of Cutte Creek, s of the road leading to ranch headquarters. 19 Comment
  CHSC105801  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC40383  Boykinia occidentalis Lowell Ahart 1985-6-30 5075 Butte Along a small stream. East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC61333  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte On a steep bank along Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 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
  CHSC107902  Brachypodium distachyon L. P. Janeway 2011-6-29 10411 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 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
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CHSC31618  Brickellia californica Lowell Ahart 1973-8-3 273 Butte Ahart Ranch. On gravel bars on North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CAS-BOT-BC145529  Briza minor Peter H. Raven 1953-5-9 5433 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CHSC98970  Briza minor Lowell Ahart 2008-5-12 14739 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC153257  Briza minor Dr. E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  UC184182  Briza minor A. A. Heller 1913-5-25 10762 Butte near Pents 152 Comment
  SEINET10514411  Briza minor Lowell Ahart 1971-4-13 Ahart 72 Butte Ca. 1/2 typical size. Among grass and on disturbed areas. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  SEINET10899500  Brodiaea californica Mrs. R. M. Austin Austin 45 Butte Iron Canyon Comment
  JEPS5692  Brodiaea californica var. californica W. L. Jepson 1934-5-4 16615 Butte 2 1/2 mi ne Cana Comment
  UC843925  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte near Chico airport Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
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Jun 17 2014
  CAS-BOT-BC482193  Brodiaea elegans subsp. elegans Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CHSC46856  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-9 4575 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CHSC78345  Brodiaea minor Lowell Ahart 2000-6-17 8480 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CAS-BOT-BC484556  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Sioerra Nevada at Butte Meadows 1219 Comment
  UC659998  Brodiaea minor L. Constance 1941-5-28 2825 Butte 3 mi SW of Paradise 304 Comment
  CHSC116566  Brodiaea nana B. Castro; Robin Carter 2016-4-14 2128 Butte Sacramento Valley. Ca 1.9 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.2 mi SSW of the Oriville Airport, off N edge of SE portion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  CHSC81329  Brodiaea nana J. Trizzino 2001-4-25 56 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  UCD139155  Brodiaea nana R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  CAS-BOT-BC484575  Brodiaea purdyi A. A. Heller 1914-7-24 11619 ` Butte Butte Meadows 1219 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  JEPS94979  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte about 12 mi s of Oroville (about 2 mi n and 1/10 mi e of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 33 Comment
  CAS-BOT-BC149544  Bromus carinatus var. carinatus John Thomas Howell 1951-6-26 27527 Butte Sierra Nevada. Near Pulga. 411 Comment
  JEPS103548  Bromus carinatus var. carinatus Lowell Ahart 2002-6-21 9736 Butte On the sides 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). 1086 Comment
  UC816144  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows 1280 Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CAS-BOT-BC156295  Bromus caroli-henrici Lowell Ahart 1984-5-31 4655 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  CHSC31732  Bromus catharticus L. Ahart 1979-5-3 1855 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC618973  Bromus commutatus C. G. Albertus 1933-6-6 Butte 1 mi w of Nelson's Bar 274 Comment
  CAS-BOT-BC156029  Bromus diandrus H. E. Brown 1897-4-15 199 Butte Near Clear Creek. 53 Comment
  CHSC109606  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. 70 Comment
  JEPS110114  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  CAS-BOT-BC162456  Bromus laevipes John Thomas Howell 1962-6-15 37514 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162464  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte Sierra Nevada. On high banks of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 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
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  CAS-BOT-BC162364  Bromus madritensis John Thomas Howell 1961-9-22 36782 Butte Sierra Nevada. Jarbo Gap, Feather River Highway. Comment
  CHSC2152  Bromus madritensis subsp. rubens M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CDA35634  Bromus madritensis subsp. rubens J. R. Keck Jr. 1981-5-13 PDR# 237679 Butte Oroville. 0 Comment
  CHSC49518  Bromus orcuttianus Vernon Oswald 1983-7-6 807 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. On an old logging road. 1036 Comment
  CAS-BOT-BC161963  Bromus rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  SEINET10868251  Bromus rubens Leverton 1974-4-10 LEVERTON s.n. Butte Abundant along East Avenue, ca. .5 mile E of Mangrove Avenue, Chico. Associates: Bromus inermis, Lolium multiflorum. Comment
  CHSC49523  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1987-8-5 3183 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  RSA716560  Bromus tectorum L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek Comment
  CHSC61366  Bromus vulgaris Lowell Ahart 1993-7-22 7073 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  UCD60245  Bromus vulgaris E. B. Copeland 1929-7-22 59 Butte Butte Co. Comment
  CHSC108058  Bulbostylis capillaris Matt Simenc; Tim Hanson, Melanie Williams, Nicole Habecker 2011-6-22 Butte Northern High Sierra Nevada. Plumas National Forest; northwest facing slopes near the top of the ridge on the southeast side of Martin Creek, 1.9 air miles northeast of Madrone Lake. 755 Comment
  CHSC49525  Calamagrostis canadensis Vernon Oswald; Lowell Ahart 1987-7-1 3059 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the edge of the creek. 1813 Comment
  CHSC59041  Calamagrostis canadensis Lowell Ahart 1992-7-26 6848 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  UC600490  Calandrinia ciliata H. F. Copeland 1931-7-10 Butte gulch opening into Colby Canyon; Jonesville 1524 Comment
  CHSC103748  Callitriche heterophylla var. heterophylla Lowell Ahart 2010-5-16 16681 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC104832  Callitriche marginata Lowell Ahart 2010-6-9 16787 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 iles (air) northeast of Oroville. 398 Comment
  CHSC84631  Calochortus albus A. Rutherford 2002-4-27 24 Butte South Libby Road, Paradise, across the stream from Fire Station 2 in a triangular dirt field. Comment
  CHSC75414  Calochortus luteus Jennifer Slater 1997-4-27 38 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SEINET3992462  Calochortus maculatus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC31343  Calochortus monophyllus Herb Allan McLane 1980-4-25 11 Butte 10 ft. e of Ponderosa Way, Plumas National Forest, MDM. 390 Comment
  CHSC51942  Calochortus monophyllus John J. Copeland 1980-3-31 19 Butte 0.95 mi SE of Cohasset Rd, ca 5 mi E of Chico airport. Comment
  UC119761  Calochortus monophyllus Mrs. R. M. Austin May 1883 191 Butte Little Chico Creek Comment
  UC311628  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 213 Butte near Paradise (in the lower Sierra Nevada); Sierra Nevada 600 Comment
  RSA21945  Calochortus monophyllus H. C. Cantelow 1939-5-19 s.n. Butte Brush Creek Ranger Station. Comment
  CHSC34489  Calochortus superbus J. D. Jokerst 1979-5-30 256 Butte SW of Humbug Rd, 3.1 mi N of jct with Helltown Rd. Comment
  SEINET7073602  Calochortus weedii A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
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Jul 17 2018
  POM196062  Caltha howellii H. F. Copeland 1929-6-11 1239 Butte Jonesville. 1524 Comment
  UCD129745  Calycadenia multiglandulosa Gerald D. Carr 1981-9-26 1161 Butte around 3 miles northeast of Honcut, on the Lowell Ahart Ranch. Comment
  CHSC27702  Calycadenia oppositifolia Robert A. Schlising 1978-6-11 3289 Butte Cohasset Road, near Cohasset and 5.5 mi above (NE of ) crossing of Mud Creek. Comment
  UC726409  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte e of, near the airport Chico Comment
  SEINET10473679  Calycadenia oppositifolia Mary Susan Taylor 1980-5-31 Taylor 2753 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  JEPS120033  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  CHSC110254  Calycadenia truncata L. P. Janeway 2012-10-11 11071 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
  CHSC39328  Calycadenia truncata Lowell Ahart 1983-6-26 4153 Butte Along the edge of Ponderosa Way, about 1 1/2 miles southeast of the East Fork of Canyon Creek, about 14 1/2 miles northeast of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  JEPS120559  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CAS-BOT-BC275379  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
  JEPS113304  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  CHSC52019  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1988-4-16 2796 Butte SE-facing slope above Cedar Creek along road 3.9 mi from Lomo. 1249 Comment
  CHSC39678  Calystegia occidentalis Lowell Ahart 1983-6-21 4071 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville, California. Section 6. 425 Comment
  SEINET10496585  Calystegia occidentalis Mary Susan Taylor 1980-5-15 Taylor 2639 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
  RSA699700  Campanula prenanthoides L. Ahart 2004-7-11 11247 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  CHSC43933  Cannabis sativa Vernon Oswald 1988-5-8 3298 Butte Railroad between Pulga and Mayaro. At the edge of the rail ties just sw of Mayaro. 438 Comment
  CAS-BOT-BC37062  Capsella bursa-pastoris Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC37065  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico. Comment
  CHSC33723  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte At end of Dark Canyon Rd near turnout and restroom, up from boat ramp to W Br Feather River, ca. 3.5 mi s of Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CAS-BOT-BC37879  Cardamine oligosperma Lowell Ahart 1979-4-3 s.n. Butte Honcut. Peter Ahart Ranch. Near edges of North Honcut Creek. 50 Comment
  SBBG128279  Cardamine oligosperma L. Ahart, J. Dittes 2009-3-20 15505 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  CAS-BOT-BC38057  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC86575  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7769 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  UC1736729  Cardamine pachystigma var. dissectifolia Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CHSC45648  Carduus pycnocephalus Vernon Oswald 1985-5-20 1766 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. On the edge of the road near the creek. 243 Comment
  CAS-BOT-BC282962  Carduus pycnocephalus Lowell Ahart 1980-5-12 2247 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS117247  Carduus pycnocephalus subsp. 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
  CDA34187  Carex L. Ahart 2010-4-23 16579 Butte Lawn of home #1082, near the middle of and north side of East 7th Street, between Sycamore Street and Linden Street, Chico. Comment
  JEPS118073  Carex Lowell Ahart 2011-8-19 17635 Butte On the south side of a good forest road, on the east side 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
  SEINET11063328 Image available Carex abrupta L. Janeway, Gog, L 2008-1 3201 A,B Butte Scott's John Creek, Intersection with Rd. 26N27 Comment
  RSA0119040  Carex angustata Lowell Ahart 2014-7-7 19579 Butte Small snow lake, north of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1691 Comment
  UC1108031  Carex angustata H. F. Copeland 1932-8-12 Butte Butte Creek Meadow Comment
  SEINET10587462  Carex angustata Lawrence P. Janeway 1987-6-27 Janeway 2358 Butte T24N, R4E, Kimshew Point quad. NW 1/4 of sec. 12. Meadow on east slope of Bald Mtn; along the Concow Rd. Small open meadow, moist, in red fir forest. With C. lemmonii, Lotus oblongifolius var. nevadensis, Helenium bigelovii, etc. 1695 Comment
  JEPS121958  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET10955616  Carex athrostachya Edwin B. Copel 1929-7-28 Copeland 607 a Butte Jonesville. 1550 Comment
  JEPS102221  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  JEPS115982  Carex barbarae Lowell Ahart 2009-6-3 15825 Butte Meadow about 15 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 254 Comment
  CHSC100766  Carex bolanderi L. P. Janeway; B. Castro 2008-4-23 9354 Butte Northern Sierra Nevada Foothills. Along the northwest edge of Thermalito Diversion Pool (the former bed of the Feather River, now kept at a constant pool elevation of 69 m), 1.8 km north of Thermalito Diversion Dam; about 3 km north-northeast of Oroville. 69 Comment
  CHSC50377  Carex bolanderi Vernon Oswald 1990-6-1 4275 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC52271  Carex bolanderi L. P. Janeway 1988-5-29 2676 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 Comment
  JEPS116003  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET7552619 Image available Carex bolanderi Lawrence P. Janeway, Marcia Waterway; Martin Lechowicz 2006-8-3 8824 Butte Northern High Sierra Nevada; pond below Lumpkin Ridge Road about 10km east of Feather Falls and about 1.0km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek; Rooted in soft muddy muck in shady cove of the pond; Clipper Mills 7.5' quad 1209 Comment
  SEINET10706538  Carex bolanderi Lawrence P. Janeway 1987-5-10 Janeway 2049 Butte T23N, R4E, Stirling City Quad, SW 1/4 of sec 3. Near edge of man-made pond along road that crosses West Branch Feather River 5 miles from Stirling. In east-facing slope of mixed conifer forest. 853 Comment
  JEPS113266  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  JEPS114978  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  SEINET3450851  Carex densa Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 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, Ohio 120 Comment
  RSA0045627  Carex divulsa Lowell A. Ahart 2012-5-25 18113 Butte Nnorthwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  CHSC50350  Carex echinata subsp. echinata Vernon Oswald 1990-5-14 4209 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  SEINET10650253  Carex eurycarpa Edwin B. Copel 1930-8-10 Copeland 609 Butte Jonesville. In marshy meadows, common. 1500 Comment
  CAS-BOT-BC19997  Carex feta A. A. Heller 1928-6-16 14620 a Butte Butte Meadows. Comment
  CHSC48079  Carex gracilior L. P. Janeway 1989-5-13 3237 Butte Along creek NW of Concow Reservoir and on the W side of Rocky Ridge; E below the Concow Rd 8.3 mi N of Hwy 70. 822 Comment
  JEPS87705  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  RSA754885  Carex gracilior L. Ahart 2009-6-18 15911 Butte 60 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  CHSC76349  Carex heteroneura var. heteroneura L. P. Janeway 1999-7-17 6508 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CAS-BOT-BC28193  Carex hirtissima James D. Jokerst 1982-6-4 1591 Butte Headwaters of Concow Creek ca 1.0 mi S of Flea Valley. 1097 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  CHSC45049  Carex integra Vernon Oswald 1987-5-28 2941 Butte Concow Rd. at Rag Dump. Grassy flat near Fall Creek. 1170 Comment
  CHSC52911  Carex integra L. P. Janeway 1987-7-4 2429 Butte Dry open meadow near a seepy area along the road to Jones Meadow, 9.6 mi from Inskip; NW-facing slopes above Last Chance Cr. 1676 Comment
  SEINET4286005 Image available Carex integra L. Janeway, Gog, L 2008-1 3184 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC94048  Carex inversa Peter F. Zika 2010-6-22 24981 Butte Montgomery Street near First Avenue, Oroville, Janeway's station, Sacramento Valley (ScV) 40 Comment
  JEPS116639  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Oroville Sacramento Valley (south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum.) 44 Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS121925  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC61510  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte Small meadow, on the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC86130  Carex lemmonii John Dittes; Josephine Guardino 2002-6-21 616 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  UC1609198  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte about 1/4 mi w Lost Creek Reservoir (on the s side of the dirt road) 1036 Comment
  UC532224  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville 1524 Comment
  SEINET7483992 Image available Carex lemmonii E. B. Copeland 1929-1 610 Butte Jonesville 1500 Comment
  UC201800  Carex mariposana H. M. Hall 1914-7-27 9792 Butte Butte Mt. summit Sierra Nevada Mountains 2133 Comment
  CHSC41352  Carex multicaulis R. A. Schlising; Nancy Prouty 1981-3-14 4000 Butte N of Oroville and N of Jarbo Gap along Hwy 70. Comment
  CHSC42385  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET7568447 Image available Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Kimshew Point 7.5' quad. Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CHSC52258  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2490 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 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
  SEINET4286045  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 B Butte Near Cornelia Lott Sank Memorial Spring Comment
  CHSC111957  Carex praegracilis Lowell Ahart 2012-5-23 18108 Butte Along the horse trail, north ofTable 32, aabout 50 yards south of Vallombrosa Avenue, southwest of Crister Ave., Lower Bidwell Park, Chico. 70 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CAS-BOT-BC117983  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-22 3064 Butte Jonesville quad. Upper canyon of Philbrook Cr 0.7 mi W of the pass. 1935 Comment
  CHSC44964  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side cyn on N-side N Fk Feather River and along hwy 70 ca 5 mi E of Jarbo Gap. Site of old (probably) mining operation. 487 Comment
  CHSC41297  Carex simulata S. C. Morey 1983-7-21 492 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44169  Carex straminiformis V. Oswald; L. Ahart 1988-7-29 3647 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CAS-BOT-BC116733  Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CDA13292  Carex subfusca G. F. Hrusa, T. D. Wilfred 1996-7-9 13140 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  SEINET8574039 Image available Carex subfusca L. Janeway, Castro, B 2009-1 9836 Butte Comment
  CAS-BOT-BC116743  Carex subfusca L. P. Janeway 1988-6-14 2772 Butte Ewalt Camp, along W branch Butte Cr. 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  RSA769160  Carex texensis P. F. Zika 2010-6-22 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, south of Mansion Ave., Chico. 60 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
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  HSC104270  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands; Magalia Serpentine, Coutolenc Rd., 0.1 mi. N of Skyway Rd. 720 Comment
  CHSC4603  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus, Chico. Comment
  JEPS18864  Castilleja Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5600 Butte w limits (lower) Paradise 457 Comment
  POM173734  Castilleja applegatei subsp. pinetorum H. F. Copeland 1927-4-2 952 Butte Jonesville. Comment
  POM193340  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville. 1550 Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC114981  Castilleja attenuata Lowell Ahart 2015-4-18 20043 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
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC50062  Castilleja attenuata Lowell Ahart 1990-4-15 6453 Butte Valley Tassels. Below the high water line of Lake Oroville, east ot the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 295 Comment
  CHSC112905  Castilleja campestris B. Castro; Robin Carter 2011-4-29 1875 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Road. 34 Comment
  JEPS4547  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (s of the Y, field on U.S. Hwy 99E) Comment
  CHSC31414  Castilleja exserta Paula J. Minton 1980-4-20 3 Butte E of Chico, ca. 8.1 mi on Hwy 32 from jct. of Hwy 99, ca. 300 ft s of Hwy 32 and 100 ft n of Santos Way. 487 Comment
  CHSC71191  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte Northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC90143  Castilleja exserta subsp. exserta Andy Winkler 1980-4-15 13 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  CHSC4004  Castilleja lacera J. E. Bowlin 1967-4-14 20 Butte Ca. 3 feet n of Cohasset Rd. and ca. 2.7 miles e of cornor of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  CHSC43539  Castilleja lacera Lowell Ahart 1973-4-15 195 Butte Along the edge of Swedes Flat Road, north-east of Bangor. 304 Comment
  CHSC52373  Castilleja lacera L. P. Janeway 1989-5-17 3259 Butte Large mdw at upper jct Black Bart Rd and Forbestown Rd. 746 Comment
  JEPS123875  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  POM43184  Castilleja subinclusa C. C. Bruce 1897-06 1938 Butte Little Chico. Comment
  CHSC61027  Casuarina equisetifolia Vernon H. Oswald 1993-7-29 5731 Butte Gray Lodge Wildlife management Area W of Gridley, S side of Rutherford Rd. at Parking Lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CHSC38418  Caulanthus lasiophyllus Vernon Oswald 1983-4-9 301 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 341 Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  CHSC51907  Ceanothus cuneatus Mile Pahl 1988-4-19 15 Butte 14.3 mi NE of Chico on Cohasset Hwy and 0.3 mi SSW of Cohasset Hwy. 548 Comment
  UC600527  Ceanothus integerrimus H. F. Copeland 1930-7-26 Butte Jonesville Comment
  UCD111992  Ceanothus integerrimus Ray Prag 1970-7-2 s.n. Butte Highway 70, at Jarboe Gap. 701 Comment
  OBI10318  Ceanothus lemmonii H. E. McMinn 1946-5-11 5512 Butte One mi E of Forbestown Comment
  UC1070788  Ceanothus lemmonii C. G. Albertus 1933-5-26 3 Butte 2 miles E of Paradise Chico Quad. 152 Comment
  UC1602380  Ceanothus lemmonii C. G. Albertus 1933-7-20 45 Butte 2.5 mi w Nimshew; Chico quad. 701 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  UC600526  Ceanothus prostratus H. F. Copeland 1930-7-26 Butte rocky peak above hotel (Jonesville); Jonesville Comment
  SEINET10493651  Ceanothus prostratus Mary Susan Taylor 1976-4-4 Taylor 1057 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
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  UC426917  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  UC2026878  Cedrus deodara Lowell Ahart 2012-10-12 18483 Butte About 50 yards east of the east side of the Deer Pen, east of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. Comment
  JEPS120068  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18022 Butte On the north side of Big Chico Creek, south 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. Comment
  RSA795774  Celtis australis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 81 Comment
  CDA18893  Centaurea melitensis H. D. Riley 1999-6-2 PDR 1145795 Butte vicinity of Oroville appr. 1/3 mile SW of intersection of Pentz-Magalia Hwy and Hwy 70. 0 Comment
  CHSC30784  Centaurium tenuiflorum M. S. Taylor 1980-8-30 3322 A Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC650  Centaurium tenuiflorum R. M. Staley 1952-7-4 Butte Honey Run. 304 Comment
  SEINET10454836  Centaurium venustum subsp. abramsii Mary Susan Taylor 1975-6-25 Taylor 807 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC288533  Centromadia fitchii John Thomas Howell 1974-9-19 50884 Butte Feather River Highway bridge at West Branch Feather River 304 Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  CHSC113390  Cephalanthera austiniae Lowell Ahart 2014-7-2 19539 Butte North edge of a small meadow, on the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC2342  Cephalanthera austiniae R. Carter 1964-6-12 118 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown R. 914 Comment
  POM107566  Cephalanthera austiniae C. C. Bruce 1897-06 64 Butte Sutton House Comment
  CHSC37435  Cerastium glomeratum R. A. Schlising 1982-4-24 4234 a Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  UC1101386  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-14 13044 Butte Butte Sink Comment
  CHSC101699  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east 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
  SEINET12164063  Cercis occidentalis D. B. Carlson 1980-1 8 Butte N edge of Coon Ridge, ca .3km N of Skyway Rd, 4.7 km E of Chico, 2.1 km WSW of Paradise 270 Comment
  SEINET10483775  Cercocarpus betuloides Mary Susan Taylor 1975-4-25 Taylor 499 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
  CHSC52367  Cercocarpus betuloides var. betuloides Pauleen Broyles 1987-4-24 1001 Butte On N side of Singer/Pine Creek in Oak Riparian Woodland. Vina Plains Preserve. Comment
  CHSC30415  Chaenactis glabriuscula var. heterocarpha R. Banchero 1980-5-4 50 B Butte N of Hwy 70 crossing of Lake Oroville St. Rec. Area, 1/4 mi north of jct Lunt Rd and Hwy 70. 609 Comment
  UC187417  Chaenactis glabriuscula var. heterocarpha Mrs. R. M. Austin 1883-1-1 Butte Adobe Flat Chico, Adobe Flat Comment
  UC884528  Chamaesaracha nana A. A. Heller 1917-7-29 12866 Butte summit above Jonesville 2133 Comment
  UCD126572  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CDA32012  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CHSC42957  Chamaesyce maculata Lowell Ahart 1987-7-3 5781 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1586408  Chamaesyce nutans Vernon H. Oswald and Lowell Ahart 1991-8-28 4850 Butte 3.5 mi ne Biggs (Rice Experiment Station on the s side of Hwy 162) 30 Comment
  CHSC113526  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CDA38788  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC33632  Chamaesyce serpillifolia subsp. serpillifolia R. E. Preston; R. A. Schlising 1981-7-21 30 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  SEINET10529948  Cheilanthes californica Mary Susan Taylor 1980-3-19 Taylor 2393 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  JEPS104147  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC45544  Chenopodium album Lowell Ahart 1976-6-27 1150 Butte At the old sheep barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  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
  UC1191352  Chenopodium ambrosioides Herbert L. Mason and Verne Grant 1946-8-14 13026 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  RSA725000  Chenopodium ambrosioides var. ambrosioides L. Ahart 2006-9-11 13281 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CDA13235  Chenopodium botrys G. F. Hrusa, T. D. Wilfred 1996-7-8 13082 Butte Plumas National Forest; Old gun range on Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET10479019  Chenopodium botrys Lowell Ahart 1983-8-16 Ahart 4285 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  CHSC44073  Chimaphila umbellata L. P. Janeway 1987-6-8 2160 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of rd to Coyote Gap. 640 Comment
  UCD117414  Chimaphila umbellata Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  RSA718387  Chimaphila umbellata subsp. occidentalis L. Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  CHSC35690  Chorizanthe polygonoides var. polygonoides J. D. Jokerst 1982-4-14 1529 Butte Butte College Campus 500 meters due N of junction of Pentz and Clark Roads. Comment
  CHSC70994  Chorizanthe stellulata Vernon Oswald 1998-5-6 8986 Butte Upper Bidwell Park (new addition), Pine Trail near the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. 452 Comment
  CAS-BOT-BC36367  Chrysolepis sempervirens Saichi Kawahara 1968-5-5 397 Butte Bull and Skyway Road 1554 Comment
  UCD72994  Cicendia quadrangularis 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
  CHSC44043  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-26 2304 Butte Edge of pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  CHSC46201  Circaea alpina subsp. pacifica L. P. Janeway 1988-7-2 2960 Butte Along road to French Cr 1.2 mi S of Coyote Gap. Above road. 1127 Comment
  SD5918  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 Butte Jonesville 1600 Comment
  CDA1321  Cirsium occidentale var. candidissimum T. C. Fuller 1958-7-7 1908 -B Butte 1 mi. S of Pulga; roadside 0.1 mi. N of bridge over North Fork Feather River. 0 Comment
  JEPS119724  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte About 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC228761  Cistanthe umbellata Lowell Ahart 1983-7-29 4247 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  CHSC28707  Clarkia arcuata R. A. Schlising 1979-5-8 3389 Butte E of Chico along the Skyway (Hwy to Paradise). Comment
  CHSC71184  Clarkia arcuata Lowell 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. 403 Comment
  CHSC27035  Clarkia biloba subsp. brandegeeae Robert A. Schlising 1978-6-25 3293 Butte E of Oroville, 3.4 mi below L. Wyandotte near L. Oroville. Comment
  CDA38047  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte 0.1 mile north of bridge over North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC88653  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-15 353 Butte Plumas National Forest. Upward side, Bean Creek Road. 548 Comment
  CHSC44635  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  CHSC64114  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek. South-facing road cutbank. 786 Comment
  CAS-BOT-BC163646  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1902-5-8 s.n. Butte Berry [Canon] Canyon (near Clear Creek) Comment
  JEPS107749  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  RSA715677  Clarkia purpurea subsp. quadrivulnera L. Ahart 2005-5-28 11820 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UCD104931  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CHSC62121  Clarkia purpurea subsp. viminea L. P. Janeway 1993-6-23 4400 Butte Plumas National Forest. North side of French Creek, 0.5 mi west of mouth of Ram Creek; north side of Rd 22N34. 615 Comment
  RSA448320  Clarkia purpurea subsp. viminea L. Ahart, Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  CAS-BOT-BC165444  Clarkia unguiculata Lowell Ahart 1983-6-30 4170 Butte Along old Highway 40, near the rest area, and near where the road runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  SEINET10572685  Claytonia heterophylla Lowell Ahart 1983-8-16 Ahart 4289 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  UC1562475  Claytonia lanceolata Vernon Oswald and Lowell Ahart 1990-6-20 4306 Butte s side Philbrook Creek (between Philbrook Reservoir and Carr Mine; ca 0.5 mi w of the Butte-Plumas county line) 1920 Comment
  SEINET10572704  Claytonia parviflora Mary Susan Taylor 1982-5-2 Taylor 4394 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
  CHSC33699  Claytonia parviflora subsp. parviflora L. Ahart 1981-4-9 2756 Butte On dry grassy soil on banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC37285  Claytonia parviflora subsp. parviflora M. S. Taylor 1982-5-2 4394 Butte Pulga serpentine outcrops, on n side of Hwy 70 at Pulga bridge ca 20 mi ne of Oroville. 487 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  CHSC52115  Claytonia parviflora subsp. parviflora R. E. Alumbaugh 1984-4-26 17 Butte 1.1 mi n of Butte creek and 100 yds w of Centerville rd, 0.8 mi n of Centerville. 335 Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CHSC30356  Claytonia perfoliata subsp. perfoliata J. D. Jokerst 1979-3-5 1139 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  CHSC56762  Claytonia rubra J. Monelo 1990-4-16 10 Butte Butte Meadows - Humboldt Rd ca 1.9 mi n of Hwy 32 facing rock outcropping ca 100 ft nw of Humboldt Rd. 1341 Comment
  CHSC52783  Clematis lasiantha K. Glozer 1975-4-22 11 Butte Ca. 5 mi. ne of Chico and ca. 200 yd. e of stage watering trough on Cohasset Hwy. 167 Comment
  UCD95626  Clematis lasiantha P. Thompson 1996-4-26 36 Butte Hwy 70. Along steep roadside next to a running creek. Comment
  SEINET5337775  Clematis lasiantha M. J. Williams 1967-4-15 s.n. Butte Near Magalis. 457 Comment
  CHSC40318  Clematis ligusticifolia Lowell Ahart 1985-7-24 5158 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. 350 Comment
  CHSC52785  Clematis ligusticifolia R. A. Schlising 1981-8-8 4191 Butte Concow area n of Oroville, near n end of Concow Reservoir. At roadside. Comment
  SEINET12092019  Clematis ligusticifolia L. Ahart, Ahart, P. 1983-1 4215 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca 5 mi ne of Forbestown. Yellow Pine Forest 450 Comment
  CHSC43756  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-6-10 2982 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Hunbug Rd. 1874 Comment
  CHSC42168  Collinsia sparsiflora Julie L. Brown 1986-4-1 Butte Ca. 1.6 km e of Chico on gravel road on the Brown Ranch adjacent to Upper Bidwell Park. 100 Comment
  UC725775  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15048 Butte between the West Branch and the North Fork of the Feather River summit; on the Feather River Highway Comment
  JEPS24250  Collinsia tinctoria Helen-Mar Beard 1960-6-20 Butte 150 yds upstream lower boundary sign of Plumas National Forest (along US Hwy 40-A, at base of grade from Jarbo Gap, not far from Big Bar); Feather River Canyon 426 Comment
  CHSC1228  Collomia heterophylla V. Holt 1935-5-21 Butte Butte Creek. 67 Comment
  CHSC28762  Collomia heterophylla J. D. Jokerst 1978-6-14 131 Butte Roadside, 100 mets. N. of De Sabla Resv. on W. side of Skyway. Comment
  CHSC97354  Collomia heterophylla Paul Maslin 2005-4-15 53 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609552E 4409353N. 243 Comment
  JEPS108549  Collomia heterophylla L. P. Janeway 1994-5-26 4654 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. Southeast-facing low road cutbank 1226 Comment
  JEPS87193  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte about 2 (air) mi ne Philbrook Reservoir (s side of hollow nw of a snow lake, on s side of Coon Hollow); Coon Hollow 1737 Comment
  UC392188  Collomia linearis E. B. Copeland July, 1929 Butte in open woods above Jonesville 1750 Comment
  CHSC69048  Collomia tinctoria Lowell Ahart 1997-8-1 7799 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  SEINET10544541  Comandra pallida Mary Susan Taylor 1977-6-25 Taylor 1376 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  RSA755266  Comandra umbellata subsp. californica L. Ahart 2009-5-15 15704 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
  CHSC3441  Convolvulus arvensis Judy Potter 1966-5-14 Butte Nord Highway, 2 miles west of US 99E. Comment
  JEPS115157  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 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
  CHSC11778  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville. 1550 Comment
  SEINET5766733 Image available Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-1 1732 Butte Under Abies, Humboldt Summit above Jonesville, Butte County, alt. 6650ft. 2027 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
  CAS-BOT-BC237925  Cordylanthus Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115716  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-8-3 16253 Butte On the west side of Ten Mile House Road, jabout 30 yards east of Big Chico Creek, 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 234 Comment
  JEPS6678  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e of Oroville (in the Quercus Douglasii Belt) Comment
  JEPS66510  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2767 Butte South entrance Manzanita Street (to Stirling City) 1066 Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  CHSC48309  Cornus sericea subsp. sericea Vernon Oswald 1983-6-22 736 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  UC775193  Cornus sessilis Herbert L. Mason 1940-5-22 12311 Butte Humboldt Rd. ca. 10 mi. above Chico Comment
  CAS-BOT-BC401863  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC41922  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows. Small bogs near a small stream that flows into Butte Creek. 1450 Comment
  UCD95109  Corydalis caseana subsp. caseana L. Ahart 1983-8-16 4301 Butte Along a small stream that flows into Butte Creek, 1 mile east of Butte Meadows. 1450 Comment
  CHSC80522  Crassula aquatica Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UCSB45763  Crassula connata Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Table Mt. Road Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC30279  Crypsis schoenoides M. S. Taylor 1978-9-8 1882 Butte Along slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  UC1563280  Crypsis schoenoides unknown 1990-9-30 6603 Butte edges of creek below Canyon Creek Bridge across Lake Oroville (below high-water line of Lake); Lake Oroville, Canyon Creek 228 Comment
  SEINET10969139  Cryptantha flaccida Lowell Ahart 1984-5-18 Ahart 4607 Butte T17N R4E. Peter Ahart Ranch, ca. 1.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  JEPS83262  Cryptantha rostellata C. C. Parry 1887-4-1 Butte Chico Comment
  SEINET10531478  Cupressus macnabiana Lowell Ahart 1985-6-30 Ahart 5094 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  UC1594732  Cuscuta californica Lowell Ahart 1992-7-26 6858 Butte 2 air mi se Snow Mountain (about 0.25 mi se of Carr Mine) 1798 Comment
  CHSC31026  Cuscuta howelliana M. S. Taylor 1979-5-6 2008 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS47094  Cuscuta indecora A. A. Heller 1914-8-11 11677 Butte Chico Comment
  CHSC94555  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, 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
  SD3819  Cuscuta suksdorfii E. B. Copeland 1931-7-17 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  CHSC41976  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larking Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC32752  Cynosurus echinatus J. D. Jokerst 1981-4-10 1293 Butte Top of North Table Mt, W edge N of a adjacent to Beatson Hollow. 335 Comment
  JEPS119863  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  JEPS108951  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET9084612  Cyperus bipartitus L. Ahart 2000-8-23 8663 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road; ca 4 air miles SW of Oroville. 43 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
  UC1100549  Cyperus difformis Herbert L. Mason and Verne Grant 1946-8-14 13024 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  CHSC107575  Cyperus eragrostis Lowell Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile HOuse Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC25335  Cyperus eragrostis M. P. Hayes 1977-8-13 34 Butte Butte College Campus, football playing fields near a wet standpipe. Intersection of Pentz and Clark Roads. 91 Comment
  CHSC42934  Cyperus eragrostis Lowell Ahart 1987-7-17 5833 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC55609  Cyperus eragrostis L. P. Janeway 1986-9-20 1888 Butte Along the edge of Butte Creek at Agua Firas Road (Watt/Goodspeed Road). 28 Comment
  JEPS110535  Cyperus eragrostis Lowell Ahart 2006-10-28 13516 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  JEPS120838  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  UC1100538  Cyperus eragrostis Herbert L. Mason and Verne Grant 1945-7-10 12634 Butte n. of Marysville (marshes along Butte Creek, Butte Sink); Butte Sink, Grey Lodge Game Refuge Comment
  UCSC000115  Cyperus eragrostis H. S. Yates 1936-8-19 6121 Butte 10 miles south of Durham - Chico 30 Comment
  CDA13826  Cyperus erythrorhizos G. F. Hrusa, T. D. Wilfred 1996-9-5 13554 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC51020  Cyperus erythrorhizos Lowell Ahart 1990-8-15 6587 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC45145  Cyperus flavescens Lowell Ahart 1975-8-21 957 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  HSC103917  Cyperus iria L. Ahart 2012-10-5 18476 Butte About 2 mi. (air) SW of the Oroville Airport; south edge of parking area at the end of the road to Larkin Road Boat Launch Area 28 Comment
  CHSC68403  Cyperus niger L. P. Janeway 1988-6-26 2884 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; about 0.6 mi northeast of the high voltage power lines. 182 Comment
  CHSC82170  Cyperus niger L. Ahart 1974-11-9 674 Butte Along edge of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  UCD141201  Cyperus niger Herbert L. Mason; Verne Grant 1946-9-27 13141 Butte three miles west of Biggs. Comment
  CHSC111953  Cyperus squarrosus Lowell Ahart 2012-6-5 18161 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC45150  Cyperus squarrosus Lowell Ahart 1972-5-24 112 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  CHSC71266  Cyperus squarrosus Lowell Ahart 1998-7-1 8027 Butte About 100 yards south of a east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC109749  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte Sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC68407  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1861 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC68419  Cyperus strigosus L. P. Janeway 1986-10-19 1941 Butte Table Mountain Road about 0.7 mi northwest of Garden Drive, where it is right at the base of the railroad fill and overlooking the Thermalito Forebay. 91 Comment
  CHSC111164  Cystopteris fragilis Lowell Ahart 2012-6-21 18203 Butte High south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC24881  Cystopteris fragilis T. L. Reynolds 1976-4-23 60 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC38237  Cystopteris fragilis Vernon Oswald 1982-7-3 20 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  SEINET3118821 Image available Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville 1550 Comment
  SEINET10535613  Cystopteris fragilis Mary Susan Taylor 1979-7-21 Taylor 2148 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  SEINET10535617  Cystopteris fragilis Mary Susan Taylor 1980-4-1 Taylor 2417 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
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  CHSC1446  Delphinium hesperium H. Holder 1949-5-18 Butte Bidwell Park. 91 Comment
  CHSC50336  Delphinium hesperium subsp. hesperium Vernon Oswald 1990-6-1 4274 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC3288  Delphinium nudicaule M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin build. at n. end of Upper Bidwell Park 20 yards from Salmon Hole on Big Chico Creek. 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
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  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
  CHSC52501  Delphinium variegatum M. J. Luesebrink 1978-2-4 11 Butte Ca. 250 ft. n of Wildwood Ave., 0.8 mi ne of junction with Manzanita Ave., .8 mi sw of rifle range, Bidwell Park, Chico. 56 Comment
  CAS-BOT-BC16977  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clar Creek) Comment
  CAS-BOT-BC82880  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  SEINET10970988  Dendromecon rigida Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4188 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10448609  Dentaria californica Mary Susan Taylor 1975-3-3 Taylor 402 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  SD215  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville; border of the Lily Pond. Comment
  CAS-BOT-BC192657  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek Comment
  CHSC26821  Deschampsia danthonioides M. S. Taylor 1978-5-7 1618 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  JEPS107775  Deschampsia danthonioides Lowell Ahart 2005-5-2 11768 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
  CAS-BOT-BC201740  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek Comment
  CAS-BOT-BC201741  Deschampsia elongata Lowell Ahart 1987-7-8 5792 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  SD122535  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 4710 Butte Ca., 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC44307  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  SEINET10508817  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-3 Taylor 2218 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC116960  Dichelostemma capitatum Matthew Forster 2013-3-5 Butte Found along 14 Mile House Rd. 472 Comment
  UCD139225  Dichelostemma capitatum Craig Martz 1982-3-22 30 Butte east side of State Route 191 at intersection of Pentz Road. 91 Comment
  CHSC30700  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-5-27 2712 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC92530  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 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-BC501087  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC3170  Dichelostemma volubile Robert D. Briggs 1966-4-23 R- 162 Butte 3 miles northeast of chico on hwy. 32. Comment
  CHSC82641  Dichelostemma volubile Tara Morgan 2002-5-7 54 Butte Within the burn area of the 2001 Yankee Hill Fire within the area of Yankee Hill along Yankee Hill Rd. off of Highway 70 east of Lake Oroville. 481 Comment
  SEINET8476819  Dichelostemma volubile M. J. Williams, W. Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  UC765918  Dichelostemma volubile R. F. Hoover 1936-5-21 1171 Butte Cana Comment
  UCD123713  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte at loop in road above Discovery Creek. ca. 1 mile north of Bald Mt., ca. 4 miles northeast of Stirling City. 1584 Comment
  CDA42939  Digitaria ischaemum L. Ahart 2012-10-2 18494 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC38808  Digitaria ischaemum Vernon Oswald 1983-9-17 1040 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC44776  Diplacus angustatus R. Banchero 1980-4-9 102 Butte Along Cherokee Rd ca 1.0 mi N of its jct with Oregon rd, 2.3 mi S of the town Cherokee. 426 Comment
  CHSC38690  Diplacus grandiflorus Vernon Oswald 1983-5-23 545 Butte Upper Bidwell Park, Chico, near Chico Creek at the east end of Yahi Trail. On flood plain of creek. 207 Comment
  SEINET8370221  Diplacus grandiflorus Unknown 1940-6-5 25677 Butte Route 24; along Feather River, above Oroville 10-12 mi. above. 1829 Comment
  CHSC103691  Diplacus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 304 Comment
  CHSC3826  Diplacus kelloggii R. L. Adams 1964-4-2 69 Butte Old road off Hwy. 32 1/4 mi. W 14 Mile House 40 yds. SE of junction. 12 mi. E. Chico. Comment
  SEINET215109  Diplacus kelloggii R. J. Planck 1963-1 28 Butte Ragdump Rd, 4 mi E of Stirling City log pond Comment
  CHSC58199  Diplacus layneae Vernon H. Oswald; Mayo Torgerson 1992-6-24 5032 Butte Trail into Rattlesnake Creek, which starts at the hairpin curve on Whiskey Flat-Sawmill Peak Rd. ca. 0.1 mi W of the gravel pit, Willard Mine property, ca. 1 mi (air) NE of Magalia. 707 Comment
  CHSC61335  Diplacus layneae Lowell Ahart 1993-7-29 7116 Butte About 2 1/2 miles north-east of Bald Mountain about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC33343  Diplacus mephiticus R. Banchero; R. Schlising 1981-6-22 526 Butte 1.1 mi e of Camp 18, 0.2 mi e of jct of Golden Trout Crossing and County Line Rd. Ca. 5 mi ne of Feather Falls town. 1280 Comment
  CHSC33683  Distichlis spicata L. Ahart 1981-5-16 2808 Butte Along rd edge, Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CAS-BOT-BC136233  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  POM193355  Dodecatheon alpinum E. B. Copeland 1930-6-26 6328 Butte Jonesville. 1550 Comment
  CHSC2401  Dodecatheon clevelandii subsp. patulum R. Carter 1965-3-9 153 Butte Found on Old Cherokee Rd., Oroville, .8 mi. N of intersection with Oregon Gulch Rd., on W bank above road. 243 Comment
  RSA758601  Dopatrium junceum Peter Fritsch, Boni Cruz 2005-8-9 1787 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. 41 Comment
  UCD123715  Dopatrium junceum John M. Tucker 1953-8-28 2679 Butte Biggs Rice Experiment Station. Comment
  SEINET7073007  Downingia bacigalupii A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  CHSC31401  Downingia bella Paula J. Minton 1980-4-14 1 Butte 1 mi e of Chico, ca. 120 ft on n side of the Skyway. 70 Comment
  CHSC25346  Downingia bicornuta M. P. Hayes 1977-4-24 19 Butte Under gully culvert along Hwy. 99 ca. 2.2 km s of Butte Creek. 60 Comment
  POM57731  Downingia bicornuta E. B. Copeland 1903-5-30 3284 Butte Chico. Comment
  CHSC109728  Downingia bicornuta var. bicornuta B. Castro 2006-5-25 1532 Butte Sacramento Valley. Ca 8 mi SE of Chico, ca 0.5 mi E of Hwy 99 0.4 mi NE of its jcn with Durham-Pentz Rd. By pond next to E-W ranch road along transmission lines through flt grasslands with intermittent stream (unnamed tributary to Hamlin Ck). 56 Comment
  UC398683  Downingia bicornuta var. bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi n Chico Comment
  CDA42333  Downingia bicornuta var. picta T. C. Fuller 1962-5-17 8713 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  UC1609088  Downingia ornatissima var. ornatissima Lowell Ahart 1993-5-17 6952 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC35010  Draba verna var. verna R. E. Preston 1982-3-4 183 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  CHSC23694  Draperia systyla M. S. Taylor 1976-5-5 1124 Butte On s side of Hwy 70, ca. 1/4 mi n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  UCD99547  Drosera rotundifolia Barry Rice 2005-7-3 BR 050702 Butte in meadow draining into Snag Lake, on the southeast side of Summit Road. 1770 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CHSC23407  Dryopteris arguta M. S. Taylor; L. Gut 1976-3-6 1012 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC34239  Dryopteris arguta M. S. Taylor 1981-5-7 3638 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  CHSC3235  Duchesnea indica Susan Carrauthers 1966-4-20 115 Butte Flower bed on N. side of Life Science building of Chico State College. City of Chico. Comment
  CHSC35993  Dudleya cymosa J. D. Jokerst 1982-5-1 1557 Butte At Phantom Falls, S branch of Coal Cr. Canyon. North Table Mountain. 388 Comment
  CHSC38406  Dudleya cymosa subsp. cymosa Vernon Oswald 1983-4-25 394 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 359 Comment
  CHSC94252  Dysphania botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC116150  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CAS-BOT-BC197254  Echinochloa muricata var. microstachya A. A. Heller 1914-5-19 11418 Butte Hills 8 miles north of Oroville Comment
  UCD37171  Echinochloa oryzicola var. mutica Beecher Crampton 1957-9-17 4626 Butte Butte County, 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC208572  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC37661  Echinodorus berteroi T. B. Devine 1981-9-3 765 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  SEINET10479912  Elatine Lowell Ahart 1985-11-7 Ahart 5231 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  JEPS120984  Elatine ambigua Lowell Ahart 2013-6-5 18723 Butte About 30 yards N of Lower Honcut road, about 1.75 miles W of Honcut. Comment
  CHSC82227  Elatine rubella Lowell Ahart 2002-4-10 9478 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  RSA4221  Eleocharis acicularis var. acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 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
  CHSC45177  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Small wash in a farmed field, about 2 1/2 miles north and 1/4 to 1/2 mile east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC78920  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-10-2 8699 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC42383  Eleocharis bella Lowell Ahart 1987-5-27 5694 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC55613  Eleocharis bella L. P. Janeway 1987-6-5 2143 Butte Small pool near confluence of Ram Creek and French Creek. 609 Comment
  CDA14063  Eleocharis bolanderi G. F. Hrusa, T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC68442  Eleocharis bolanderi L. P. Janeway 1987-6-13 2217 Butte Meadow just northeast of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  SEINET10466887  Eleocharis engelmannii Lowell Ahart 1983-6-6 Ahart 4027 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC55452  Eleocharis macrostachya L. P. Janeway 1991-4-7 3992 Butte Ca 0.3 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 30 Comment
  CHSC78188  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  SEINET9764313 Image available Eleocharis macrostachya Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC45143  Eleocharis pachycarpa Lowell Ahart 1975-6-19 793 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
  CHSC78196  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8289 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 39 Comment
  SEINET11750485  Eleocharis pachycarpa Unknown 1985-1 5161 Butte Peter Ahart Ranch, ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville,W side of North Honcut Creek 46 Comment
  CAS-BOT-BC113171  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville, in and beside the Lily Pond, a permanent pool. 1750 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  JEPS99032  Eleocharis quadrangulata Vernon H. Oswald, Lowell Ahart, and Barbara Ertter 1998-10-22 9676 Butte 1 mi S of Oroville Municipal Airport (N shore of pond at clay pits on E side of Larkin Rd. just S of boundary of the Oroville WA) 41 Comment
  JEPS104218  Eleocharis quinqueflora Lowell Ahart 2003-5-28 10231 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CHSC100524  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, 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
  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
  CHSC38816  Eleusine indica Vernon Oswald 1983-10-3 1051 Butte Upper Bidwell Park, Chico, at the north entrance to the parking lot at Hooker Oak Recreation Area. Roadside. 79 Comment
  CHSC44441  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS114982  Elymus elymoides subsp. californicus Lowell Ahart 2008-6-13 14822 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CAS-BOT-BC203422  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  CHSC2189  Elymus multisetus H. Silberman; D. Isaac 1949-5-17 Butte S. side of Big Chico Creek, 7 mi. ENE of Chico. 182 Comment
  UCD62442  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia. 731 Comment
  CAS-BOT-BC204202  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls 1310 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  RSA718076  Elymus trachycaulus subsp. subsecundus L. Ahart 2006-7-16 12999 Butte on northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1516 Comment
  SEINET6635565 Image available Epilobium angustifolium subsp. circumvagum H. F. Copeland 1928-1 443 Butte neighborhood of Jonesville; above Jones Creek 1829 Comment
  UCD105294  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 miles N of Oroville. Comment
  JEPS127038  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC31783  Epilobium canum subsp. latifolium L. Ahart 1978-10-8 1818 Butte On the bank of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UCSC000491  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1928-7-31 s.n. Butte in woods along Butte Creek - Jonesville 1372 Comment
  UCD105645  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-9-13 3813 Butte Pinkard Creek, ca. 1/8 mile N of Lost Creek Reservoir Dam, ca. 2.2 miles NW of Strawberry Valley. 1100 Comment
  OBI5728  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville 1500 Comment
  CHSC40775  Epilobium densiflorum Lowell Ahart 1985-6-17 5058 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  SEINET10453012  Epilobium foliosum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4185 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  JEPS87376  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  UC1602171  Epilobium lactiflorum H. F. Copeland 1932-8-22 Butte ridge se crest of Butte Creek (near spring); Lassen National Forest, vicinity of Jonesville Comment
  CHSC26796  Epilobium minutum M. S. Taylor 1978-5-6 1572 Butte By RR tracks, Magalia. 609 Comment
  CHSC32842  Epilobium minutum William Askea 1981-4-22 13 Butte Ca. 100 m w of Butte Creek and 1.2 km n of Magalia Reservoir, 2.5 km n of Magalia. 730 Comment
  CHSC70339  Epilobium minutum R. A. Schlising 1980-6-14 3709 Butte NE of Oroville at Little Bald Rock. 1051 Comment
  SBBG32323  Epilobium minutum L. S. Rose 1963-6-2 Butte 2 mi S of Pulga, N Fork of Feather River 579 Comment
  CHSC61642  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte On the north side of the ridge, about 1/2 mile easta of Snow Mountain. 2103 Comment
  UC1564741  Epilobium oregonense V. Oswald and L. Ahart 1989-8-15 3935 Butte Soda Ridge Rd 1.4 mi w junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, adjacent to a shallow lake n of and visible from rd) 1752 Comment
  UCD169262  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC7140  Epilobium torreyi M. I. Moore 1969-4-22 12 Butte 20 ft. n of Pentz Rd., 200 yds. e of Hwy. 99. 76 Comment
  JEPS117208  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, 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
  CHSC6589  Epipactis gigantea R. Carter 1966-6-26 459 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC113374  Equisetum hyemale subsp. affine Lowell Ahart 2014-4-16 19374 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC39211  Equisetum hyemale subsp. affine M. S. Taylor 1983-3-13 5244 Butte Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. 487 Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  CHSC97129  Eragrostis cilianensis Lowell Ahart 2007-7-2 14243 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CHSC41982  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 5427 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC284081  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 1492 Butte The edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville 35 Comment
  CDA34555  Eragrostis pectinacea var. pectinacea L. Ahart 2008-11-4 15405 Butte On the east edge of the paved road. about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. Comment
  CHSC97742  Eragrostis pilosa var. pilosa Lowell Ahart 2007-11-3 14560 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  CHSC76338  Eremogone congesta var. congesta L. P. Janeway; B. Castro 1999-8-1 6511 Butte Between Philbrook Lake Road and High Lakes Road, 0.15 mi east of their junction. 1682 Comment
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  LA203671  Ericameria bloomeri E. B. Copeland; 1930-8-26 493 Butte Jonesville 1550.0 Comment
  CHSC41876  Erigeron bonariensis Lowell Ahart 1986-11-14 5461 Butte 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
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC295163  Erigeron inornatus Lowell Ahart 1983-7-24 4206 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC11841  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 Comment
  CHSC38152  Erigeron philadelphicus J. D. Jokerst 1983-5-12 1764 Butte At a spring ca 200 meters north of the waterfalls at the south branch of Coal Cr. Canyon, east edge of Table Mt. Comment
  SFV3884  Erigeron philadelphicus M. L. Vincent 1962-4-15 173 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  POM33314  Erigeron philadelphicus C. C. Bruce 1897-04 2076 Butte Pintz [not confident in locality]. Comment
  JEPS120723  Eriochloa acuminata var. acuminata Lowell Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  RSA401485B  Eriodictyon californicum M. Vincent 1962-4-19 213 Butte Humbug Road, 3 miles northeast of Centerville Comment
  SEINET5495493  Eriodictyon californicum R. McKee, H. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC39079  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-20 4098 Butte E of Inskip and E of Jones Meadow. 1767 Comment
  CHSC44045  Eriogonum marifolium var. marifolium L. P. Janeway 1987-7-5 2458 Butte 2.5 mi north of Jones Mdw along rd to Philbrook Reservoir. 1920 Comment
  CHSC39136  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1982-7-24 4340 Butte E of Stirling City, at Creek in Breakneck Canyon. 1417 Comment
  RSA4637  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. 1500 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  CHSC59563  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  JEPS113681  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 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
  CAS-BOT-BC253051  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cementery about 1/2 mile south of Oregon Gulch Road about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  POM219116  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville, ridge between Jones and North Willow Creeks. 1700 Comment
  CAS-BOT-BC265210  Eriogonum umbellatum var. speciosum James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  CAS-BOT-BC265215  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte Pulga Bridge, N. Fk. Feather River, Sierra Nevada 417 Comment
  UC177591  Eriogonum ursinum H. M. Hall 1914-7-27 9787 Butte e Jonesville (Big Summit, Humboldt Road); Big Summit 2042 Comment
  SEINET10479574  Eriogonum ursinum Mary Susan Taylor 1980-8-2 Taylor 3218 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10479586  Eriogonum vimineum Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4205 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC19718  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-30 636 Butte Found on a gravel bar along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CHSC33787  Eriophyllum lanatum var. croceum M. S. Taylor; L. Hanson 1981-4-10 3520 Butte On e side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  SEINET10904848  Eriophyllum lanatum var. croceum Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3520 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  RSA92670  Eriophyllum lanatum var. grandiflorum F. W. Peirson 1926-6-21 6766 Butte About 10 miles east of Chico on Humboldt Road Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  JEPS115287  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
  UCR237331  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18749 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC35701  Eryngium castrense J. D. Jokerst 1982-5-1 1549 Butte Top of North Table Mt. Ca 200 met SE of Cherokee Rd at the mesa's E edge. Comment
  CAS-BOT-BC40747  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte Near Cohasset. Comment
  CHSC42870  Erythranthe bicolor Lowell Ahart 1987-5-11 5615 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC44754  Erythranthe breweri R. Banchero 1980-6-16 232 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, ca 5 mi NE of the jct of Humbolt Rd and Hwy 32. 1292 Comment
  CAS-BOT-BC153859  Erythranthe glaucescens Mrs. C. C. Bruce 1897-3-1 2106 Butte Little Chico Comment
  CHSC105167  Erythranthe glaucescens Christopher T. Ivey 2007-4-22 368 Butte Humboldt Rd, between Hwy 32 and town of Butte Meadows, along N side of road in gravelly bank. 1219 Comment
  CHSC44682  Erythranthe glaucescens R. Banchero 1980-4-11 103 Butte Along Coutolenc Rd 0.3 mi N of its jct with the Skyway, near the river. 487 Comment
  CHSC44944  Erythranthe glaucescens Cathy Young 1988-4-23 8 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC90150  Erythranthe glaucescens J. Lund 1980-4-19 Butte On the trail leading up to the falls above Richardson Springs 2.0 mi east of Chico. 121 Comment
  SEINET14214276  Erythranthe glaucescens A. R. James 1963-4-20 s.n. Butte 10 miles NE of Chico. 122 Comment
  SEINET8205909  Erythranthe glaucescens Lowell Ahart 2006-5-10 12614 Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bride across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC105164  Erythranthe guttata Christopher T. Ivey 2007-4-30 367 Butte Table Mountain, along small creek. 396 Comment
  CHSC38701  Erythranthe guttata Vernon Oswald 1983-6-3 625 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion channel. 79 Comment
  CHSC44676  Erythranthe nasuta R. Banchero 1980-4-19 119 Butte Ca 0.7 mi directly NE of Feather Falls, ca 1.4 mi due N of the town of Feather Falls. 944 Comment
  CHSC44737  Erythranthe nasuta R. Banchero 1980-3-19 69 Butte Along the Skyway 5.5 mi E of Chico, Ca 6 mi SW of Paradise. 304 Comment
  SEINET8381874  Erythranthe primuloides C. E. Wickstrom 1964-9-12 62 Butte at Butte Meadows ca. 160 ft. sw of where stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. Comment
  CHSC4196  Erythronium multiscapideum J. Senter 1967-4-10 11 Butte Located 150 yds. S. E. of covered bridge at base of slope, on Honeyrun rd. 60 Comment
  CHSC49690  Erythronium multiscapideum Vernon Oswald 1985-4-3 1697 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  HSC72760  Erythronium multiscapideum M. S. Taylor, D. V. Hemphill 1981-3-18 3422 Butte Near and W of bridge crossing W Branch of Feather River on Ponderosa Way 488 Comment
  CHSC112099  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte On the south side of Big Chico Creek, about 5 yards east of the Freewy, Lower Bidwell Park, Chico. 62 Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  CHSC30972  Eschscholzia lobbii Joann Lacey 1979-3-16 5 Butte Ca. 1.1 mi ne of jct of Humboldt Rd. and Stilson Canyon Rd., ca. 3.9 mi ne of Chico. 129 Comment
  UC1303043  Eschscholzia lobbii A. A. Heller 1928-4-30 14537 Butte about 4 mi below Paradise (along the Neal road) Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  SBBG17169  Eschscholzia lobbii M. Vincent 1961-3-27 40 Butte Table Mtn, 3 mi E of Cherokee 762 Comment
  CHSC79492  Euonymus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1996-7-9 13115 Butte Northern California. Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  CHSC92748  Euonymus occidentalis var. occidentalis L. P. Janeway; Matt Brown 2005-6-21 8426 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lockerman Creek 0.9 km north of its confluence with Camp Creek. 963 Comment
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Mar 30 2007
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC54099  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1991-5-11 4576 Butte Lake Oroville, Loafer Creek Recreation Area, near the group camps. Along Roy Rodgers Trail. 341 Comment
  UCD132335  Euthamia occidentalis L. Ahart 1982-10-11 3860 Butte ca. 1/10 miles southeast of HQ, Graylodge Wildlife Refuge, ca. 12 miles southwest of Gridley. 35 Comment
  JEPS121967  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CAS-BOT-BC278269  Festuca californica John Thomas Howell; Gordon H. True 1967-6-11 42564 Butte On northwest side of Feather River Canyon near Pulga Bridge 426 Comment
  JEPS87481  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10662360  Festuca subuliflora Lowell Ahart 2007-5-22 Ahart 13915 Butte T21N, R6E, Section 28. About 1/8 miles south of Bald Rock Dome, around a small stream along the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile 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. 844 Comment
  CHSC34194  Fimbristylis autumnalis R. A. Schlising 1979-10-13 3502 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CDA5502  Foeniculum vulgare L. Ahart 2001-6-13 8816 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC43057  Fragaria vesca L. P. Janeway 1987-6-5 2151 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from Oro Quincy Hwy. Edge of road near creek. 1097 Comment
  CAS-BOT-BC437084  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CAS-BOT-BC52507  Frangula californica subsp. californica C. H. M. 1919-11-21 s.n. Butte Chico Comment
  CHSC43730  Frangula purshiana Vernon Oswald 1984-6-7 1269 Butte Calif. Hwy 32, 1.2 mi n of Chico Creek Bridge. 1109 Comment
  CHSC46073  Frangula rubra J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1779 Butte Occasional in Yellow Pine Forest along Bean Creek Rd 4/5 mile east of Little Bald Rock. Comment
  CHSC54322  Frankenia salina Vernon H. Oswald 1991-6-16 4665 Butte West Liberty Rd, 1.0 mile west of Pennington Rd, on the north edge of Gray Lodge. Roadside. 20 Comment
  CHSC20105  Fraxinus dipetala M. S. Taylor 1975-4-25 498 Butte On e side of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  RSA795644  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  SEINET10935662  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca 50 feet E of Cohasset Hwy, ca 8 miles N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 135 Comment
  CHSC27636  Fremontodendron californicum Robert A. Schlising 1978-5-9 3229 Butte In chaparral south of Cohasset, along dirt road parallel with Cohasset Hwy, about 6 mi NE of Hwy crossing of Mud Creek. Comment
  CHSC40667  Fremontodendron californicum J. D. Jokerst; L. Ahart 1984-3-20 1950 Butte Edge of Ponderosa Rd. (=Bloomer Rd.) 1.45 miles north of its junction with Highway 162. 3 air miles SW of Berry Creek. Comment
  CHSC49601  Fritillaria affinis Vernon H. Oswald 1990-2-21 4135 Butte Slope below Lower Centerville Canal, ca. 0.5 mi nw of where the canal crosses Humbug (Centerville) Rd. 274 Comment
  CAS-BOT-BC504405  Fritillaria atropurpurea Mrs. C. C. Bruce 1897-1-1 484 Butte Unspecified Comment
  CHSC60589  Fritillaria eastwoodiae Vernon H. Oswald; Lowell Ahart 1993-4-19 5279 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, EDE of Magalia. 701 Comment
  CHSC88655  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 266 Butte Plumas National Forest. In fill slope on Galen Ridge. 792 Comment
  SDSU19716  Fritillaria eastwoodiae Sean Ryan 2010-4-17 33 Butte North of Magalia on shady NE facing roadcut on west side of Jordan Hill Road, approximately 1.1 miles from its intersection with Coutolenc Road. 543 Comment
  SEINET10469653  Fritillaria eastwoodiae Mary Susan Taylor 1981-3-16 Taylor 3404 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
  SEINET10469654  Fritillaria eastwoodiae Mary Susan Taylor 1979-3-20 Taylor 1947 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10469657  Fritillaria eastwoodiae Mary Susan Taylor 1980-4-18 Taylor 2502 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-BC505284  Fritillaria micrantha Lowell Ahart 1980-3-26 2058 Butte Near Hurleton. Comment
  CHSC40037  Fritillaria pluriflora R. M. Austin 1986-2-1 Butte Chico. Comment
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Jul 23 2013
  SEINET10469525  Fritillaria recurva Mary Susan Taylor 1980-5-8 Taylor 2607 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC4194  Galium aparine Ann Dolder 1967-4-24 Butte Ca. 50 yards from road of Bare Hole, Bidwell Park, Chico. 76 Comment
  CHSC28018  Galium bifolium M. S. Taylor 1978-7-18 1714 Butte On E side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  SEINET10500696  Galium bolanderi Mary Susan Taylor 1981-5-21 Taylor 3767 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-BC124079  Galium grayanum var. grayanum Amos Arthur Heller 1914-8-7 11668 Butte Summit east of Jonesville 2133 Comment
  CHSC117427  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC29770  Galium parisiense M. S. Taylor; L. Ahart, R. S. Schlising 1980-5-31 2750 Butte E side of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 609 Comment
  CHSC42431  Galium parisiense Lowell Ahart 1987-5-6 5537 Butte At the Poe Power House that is along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC75302  Galium parisiense Lowell Ahart 1999-5-24 8076 Butte Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC90038  Galium porrigens var. tenue Gerold C. Grant 1990-4-23 23 Butte NE side of Crown Point road and ca. 40 m se of Highway 32, 19.1 km ne of Chico. Roadside. 580 Comment
  JEPS115586  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 461 Comment
  CHSC116709  Gamochaeta ustulata Lowell Ahart 2016-5-15 20835 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. 45 Comment
  UCD121118  Garrya flavescens D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  JEPS119566  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of Guardian Trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  UC1122707  Garrya fremontii J. E. Sowder 1933-8-4 121 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  CHSC6162  Gastridium phleoides E. Parreno 1968-4-15 54 Butte NE of Municipal Golf Course in Upper Bidwell Park on slope of ridge, Chico. Comment
  CHSC91465  Gastridium phleoides Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS119867  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. Comment
  SBBG583  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 mi N of Lone Pine Forest Guard Stn, St Hwy 32 Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  SD7373  Gayophytum heterozygum Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  POM220088A  Gayophytum humile H. F. Copeland 1927-9-4 448 Butte Jonesville. 1524 Comment
  RSA0119042  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  POM193353  Gentianella amarella E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC37535  Geranium dissectum M. S. Taylor 1982-4-8 4285 Butte At the end of Beckwourth Rd just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  JEPS119709  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA0045624  Geranium dissectum Lowell A. Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  SEINET10495125  Geranium molle Mary Susan Taylor 1980-4-27 Taylor 2566 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  JEPS114586  Geranium purpureum Lowell Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) soouthwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC64212  Geum macrophyllum S. C. Morey 1983-7-23 585 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC1243  Gilia capitata subsp. pedemontana J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 91 Comment
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  UC172852  Gilia tricolor subsp. tricolor A. A. Heller 1913-4-7 10724 Butte hills six mi n Oroville; n of Oroville Comment
  CAS-BOT-BC266587  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  CHSC94051  Githopsis pulchella subsp. campestris R. D. Fischer 2005-5-18 725 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail, canyon facing. 426 Comment
  UCD80202  Githopsis pulchella subsp. serpentinicola CNPS SN Foothill Team 2006-5-23 SNNR 0789 b Butte BLM Parcels near Paradise. 520 Comment
  CHSC116983  Githopsis specularioides Lowell Ahart 2016-6-4 20932 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
  RSA21308  Githopsis specularioides C. B. Wolf 1937-5-12 8653 Butte West side of So. Honcut Creek, 2.6 miles E of Bangor; Sierra Nevada Foothills. 213 Comment
  SEINET10464755  Githopsis specularioides Lowell Ahart 1985-4-21 Ahart 4881 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CHSC51269  Glinus lotoides Lowell Ahart 1990-10-5 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC63707  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte On the bottom of a large drying pond, on the south side of the shooting area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  CHSC76420  Glinus lotoides Lowell Ahart 1999-10-28 8297 Butte On the bottom of a small wash, just southeast of the small pond where you can park, 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
  JEPS120858  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  RSA0106686  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte Northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CHSC93475  Glyceria declinata Lowell Ahart 2006-5-3 12564 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
  UC600757  Glyceria elata H. F. Copeland 1932-7-13 Butte Jonesville Comment
  UCD85131  Glyceria elata Robert E. Preston 1982-7-16 333 Butte ca. 1/2 mi. SW of Crane Valley. At margin of stream. 1554 Comment
  POM308583  Gnaphalium beneolens Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3234 Butte Feather River Hwy. Comment
  JEPS120609  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 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
  RSA724997  Gnaphalium palustre L. Ahart 2006-9-11 13277 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  SEINET6167160  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  JEPS103378  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SD111956  Gratiola ebracteata Barbara Ertter, Jeffrey Strachan 1980-5-5 3266 Butte Peter Ahart Ranch ca 1 1/2 mi northeast of Honcut between Oroville and Marysville, pasture north of the house, ditch 29 Comment
  CHSC44633  Grindelia squarrosa var. serrulata Vernon Oswald 1987-9-1 3229 Butte Humboldt Rd. 2.0 mi ne of Lomo, near the benchmark. Edge of the road. 1381 Comment
  CHSC35081  Hackelia californica R. A. Schlising; R. Banchero 1980-7-14 3894 Butte 4.2 mi N of Inskip along Skyway (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). 1511 Comment
  CHSC91450  Hainardia cylindrica Lowell Ahart 2005-6-12 12129 Butte Pasture field, on the north side of Evans Reimer Road, about one mile east of Pennington Road, about 4 miles (air) southwest of Gridley. 18 Comment
  CHSC100808  Hastingsia alba R. A. Schlising 1980-7-8 3864 Butte Several miles NE of Butte Meadows, just north of Butte Creek and west of Cherry Hill Campground. 1402 Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  JEPS120074  Hedera helix Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET11842149  Hedypnois cretica R. A. Schlising 1980-1 3595 Butte N of Lake Oroville, along Nelson Bar Rd, 1 mi W of jct with Lunt Rd & 1.8 mi total W of jct Comment
  CAS-BOT-BC306538  Helenium bigelovii Lowell Ahart 1980-7-20 2479 Butte At Little Bald Rock 1100 Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected north of pond along the eastern meadow edge. 1371 Comment
  CAS-BOT-BC309404  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte Hills 8 miles north of Oroville Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  UC1609017  Helianthella californica subsp. nevadensis Lowell Ahart 1993-9-8 7171 Butte on top of ridge about 1 mi e Snow Mountain 2103 Comment
  CHSC30652  Helianthella californica var. nevadensis M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2305 Butte Off road from Magalia to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC95076  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CDA13913  Helianthus bolanderi G. F. Hrusa, T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC38359  Helianthus bolanderi Vernon Oswald 1983-6-29 796 Butte Upper Bidwell Park, Chico, ca. 300 ft s of Upper Park Rd. and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC75904  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 730 Comment
  JEPS115050  Heliotropium europaeum Lowell Ahart 2007-11-3 14575 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  CAS-BOT-BC314992  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi. W of 23N15 ca. 1.5 mi. S of its jct. with Four Trees Road, ca. 2 air mi. W of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CHSC26628  Hemizonia congesta subsp. luzulifolia M. P. Hayes 1977-9-12 125 Butte In the area of the organic garden on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC357  Hemizonia congesta subsp. luzulifolia V. Holt 1944-9-15 Butte Near Chico. 57 Comment
  UC726326  Hemizonia congesta subsp. luzulifolia A. A. Heller 1941-9-13 16310 Butte 9 mi from Chico (Oroville Road) Comment
  CHSC60827  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald; Lowell Ahart 1993-6-22 5556 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. At roadside. 1091 Comment
  JEPS114050  Hesperevax acaulis var. acaulis Robert E. Preston 2007-4-4 2421 Butte 5.2 moi NNE of Oroville, on North Table Mountain Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center 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
  HSC86837  Hesperocyparis macnabiana G. C. Russell 1975-5-3 1 Butte 0.6 km NNE of Magalia, 20 m E of road 630 Comment
  CHSC44303  Hesperolinon californicum Lowell Ahart 1988-4-29 5962 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/1 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CAS-BOT-BC175998  Hesperolinon californicum Lowell Ahart 1977-5-11 154 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS127025  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 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. Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  UC1212423  Hesperolinon micranthum Mrs. C. M. Wilder 1912-6-9 1711 Butte Paradise Comment
  CHSC37381  Heteranthera limosa R. A. Schlising 1980-8-3 3961 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
  UCD139992  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. Comment
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). 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
  CHSC30803  Heterocodon rariflorum M. S. Taylor 1978-7-21 1828 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC48012  Heterocodon rariflorum Vernon Oswald 1987-6-23 3022 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC51862  Heterocodon rariflorum L. P. Janeway 1988-6-25 2899 Butte Small meadow along Bull Hill Rd 2.9 mi from the Skyway. 1508 Comment
  SEINET10460737  Heterocodon rariflorum Taylor 1980-5-27 Taylor 2684 Butte At the foot of Big Bald Rock, about 3 miles east of Lake Madrone. T21N R6E sc Sec. 30 998 Comment
  SEINET10972527  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte JONESVILLE 1150 M Comment
  CHSC40325  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  JEPS115260  Heteromeles arbutifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  RSA0074384  Heterotheca grandiflora L. Ahart 2005-11-20 12491 Butte Along road, on the west side of the Poe Power House, east of North Fork of the Feather River. 276 Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC50820  Hieracium scouleri var. scouleri Lowell Ahart 1990-7-19 6572 Butte On the south side of the road, at the Forbestown Reservoir (dam), about 5 miles north-east of Forbestown. 457 Comment
  CHSC113392  Hoita macrostachya Lowell Ahart 2014-5-27 19532 Butte Bottom of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 41 Comment
  CHSC84242  Hoita macrostachya Lowell Ahart 2003-7-17 10420 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
  CHSC88064  Hoita macrostachya R. D. Fischer 2004-6-12 150 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, next to pond off the Annie Bidwell Trail, 150 ft s. of 10 Mile House Trail junction. 248 Comment
  CHSC99752  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC112618  Holocarpha virgata subsp. virgata Lowell Ahart 2013-9-5 19022 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  CHSC34248  Holodiscus discolor M. S. Taylor 1981-7-17 4069 Butte N side of Feather River Hwy 70 at Pulga bridge on large serpentine outcrop along Pulga Rd near bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC6728  Hordeum arizonicum B. Anthony 1968-4-21 464 Butte Horshoe Lake, Bidwell Park, Chico. Comment
  SD149201  Hordeum brachyantherum Lowell Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut, Valley Grassland 49 Comment
  CAS-BOT-BC281251  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap 609 Comment
  CAS-BOT-BC285090  Hordeum marinum subsp. gussoneanum Lowell Ahart 1982-4-29 3397 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC26788  Hordeum marinum subsp. gussoneanum M. S. Taylor; M. Hayes 1978-5-7 1598 Butte Richvale vernal pools, on w side of Hwy 99, ca. 20 mi s of Chico. 30 Comment
  SEINET11689119  Hordeum marinum subsp. gussoneanum L. Ahart, Taylor, M. S.; Jokerst, J. D. 1982-1 1537 Butte Grey Lodge Waterfowl Management Area, N side of Rutheford Rd, ca 100 m W of Pennington Rd Comment
  CHSC42332  Horkelia californica subsp. dissita Lowell Ahart 1983-6-21 4101 Butte Along a seep at the edge of Bloomer Hill Road, ca 3 mi nw of Oroville-Quincy Hwy, ca 16 mi ne of Oroville. 700 Comment
  CHSC74119  Horkelia californica subsp. dissita B. Castro 1998-7-28 811 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. Near eastern edge of meadow. 929 Comment
  CHSC111977  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte Along a small stream, west of a poor dirt road, about 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the Wesst Branch Bridge across Lake Oroville. 286 Comment
  CAS-BOT-BC536588  Horkelia californica var. elata Lowell Ahart 1983-6-21 4101 Butte Along Bloomer Hill Road, 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville 700 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC43664  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-21 2921 Butte Skyway between Stirling City and Inskip, 0.4 mi n of the junction of Powellton (Humbug) Rd. In wet ditch beside the road. 1377 Comment
  CHSC46290  Hosackia stipularis var. ottleyi Vernon Oswald 1989-5-11 3765 Butte Santos Rd (from Hwy 32) on Doe Mill Ridge. 487 Comment
  CHSC60985  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10837219  Hydrophyllum occidentale Mary Susan Taylor 1979-5-4 Taylor 1997 A Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  UCD119493  Hydrophyllum occidentale M. S. Taylor 1980-5-4 1997 A Butte Along Millsap Bar Rd., ca. 4 mi ne of its jct with Brush Creek Rd, ca 26 mi ne of Oroville. 1005 Comment
  CHSC43295  Hypericum anagalloides Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC400824  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  SBBG128726  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte seeps, SE edge of large open bare granite area, ca. 3.8 mi NE of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 974 Comment
  CAS-BOT-BC410221  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  SEINET10473839  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3570 B Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  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
  RSA500418  Idahoa scapigera Vernon H. Oswald 1989-3-1 3726 Butte S side of the East Branch of Mud Creek, E of Richardson Springs. At the falls. Comment
  CAS-BOT-BC133559  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 Alt., 18 mi. NE. from Oroville 701 Comment
  CHSC21828  Iris macrosiphon J. C. McDonald 1971-3-15 4 Butte Ca. 10 yards n Cohasset road and ca. 3.5 mi ne of Chico Municipal Airport. 152 Comment
  CHSC24910  Iris macrosiphon T. L. Reynolds 1976-4-23 56 Butte 0.3 mi ne of Covered Bridge, 7.2 mi ese of Chico. Comment
  SEINET10469753  Iris macrosiphon Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4289 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  SEINET10469754  Iris macrosiphon Mary Susan Taylor 1980-3-1 Taylor 2344 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
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  CAS-BOT-BC69946  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  CHSC46179  Isoetes howellii Lowell Ahart 1975-5-11 754 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  POM26550  Isoetes howellii H. F. Copeland 1903-5-30 292 Butte Chico. Comment
  JEPS127198  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte 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 4 1/4 miles (air) northeast of Honcut. Comment
  CHSC84205  Isolepis setacea Lowell Ahart 2003-6-30 10337 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  JEPS98569  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC33363  Juglans californica var. hindsii S. Posner 1972-9-20 Butte 2 ft. west of Nord Ave., 1/4 mile north of 1st Street, Chico. Comment
  RSA299477  Juglans hindsii J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Road 1 mile west of Cohasset Road near Chico Comment
  UCD141290  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2.5 miles east of Honcut. 140 Comment
  CHSC76017  Juncus articulatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8147 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC96092  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 A Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  JEPS113839  Juncus articulatus Lowell Ahart 2007-7-11 14286 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
  UCD141307  Juncus articulatus subsp. articulatus L. Ahart 1983-6-26 4136 Butte East Fork of Canyon Creek, near Ponderosa Way (sign gives Big Ridge Road), about 14 miles northeast of Oroville. 1500 Comment
  JEPS114422  Juncus brachyphyllus Lowell Ahart 2008-7-9 15069 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  SEINET10872268  Juncus brachyphyllus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4135 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC113246  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC38916  Juncus bufonius var. bufonius Vernon Oswald 1983-4-9 312 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 140 Comment
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  CHSC61346  Juncus bufonius var. bufonius Lowell Ahart 1993-7-29 7118 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC6111  Juncus capitatus A. R. Jaegel 1968-4-19 153 Butte 1 mi s of Cherokee on Cherokee Rd. Comment
  UC1250332  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte s of Oroville Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  JEPS118054  Juncus dubius Lowell Ahart 2011-8-23 17648 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC108323  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1225 Comment
  CHSC65472  Juncus effusus subsp. pacificus Vernon Oswald 1988-5-25 3342 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In a ditch along Hwy 99 just n of the entrance to the ranch. 57 Comment
  SEINET10472478  Juncus effusus var. pacificus Mary Susan Taylor 1978-7-18 Taylor 1721 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC11961  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville. In marsh. 1550 Comment
  CHSC78336  Juncus ensifolius Lowell Ahart 2000-6-27 8523 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  CHSC99488  Juncus ensifolius Lowell Ahart 2008-7-23 15142 Butte North side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  POM110832  Juncus ensifolius C. C. Bruce 1897-05 1880 Butte Little Chico Comment
  JEPS118349  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  CAS-BOT-BC110104  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-14 3434 Butte Peter Ahart Ranch, about 2 miles north and 0.5 mile east of Honcut. 50 Comment
  UC1438369  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  CDA34709  Juncus leiospermus var. leiospermus L. Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  RSA337381  Juncus leiospermus var. leiospermus L. Ahart 1984-5-7 4589 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC78343  Juncus oxymeris Lowell Ahart 2000-6-17 8486 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  JEPS113879  Juncus oxymeris Lowell Ahart 2007-7-7 14264 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
  RSA700393  Juncus oxymeris L. Ahart 2004-8-2 11328 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CDA34545  Juncus tenuis L. Ahart 2007-7-7 14262 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC31911  Juncus tenuis L. Ahart 1977-6-13 1415 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 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
  CHSC99819  Juncus trilocularis Lowell Ahart 2008-6-13 14814 Butte Bottom of a small mined wash, about 50 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 324 Comment
  UCD142845  Juncus uncialis Lowell Ahart 1974-4-11 363 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  JEPS113744  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte S side of a drainage ditch, N side of Evans Reimer Road, about 1 1/4 mi E of Pennington Road, about 4 3/4 mi (air) SW of Gridley 22 Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CHSC44722  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-17 251 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  CHSC23888  Kickxia elatine K. R. Stern 1972-9-19 3779 Butte E bank of the Sacramento River, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  JEPS95757  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 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
  JEPS97428  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  SEINET10473868  Lactuca saligna Mary Susan Taylor 1977-8-16 Taylor 1443 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  UC828864  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham Comment
  CHSC46075  Lagophylla glandulosa J. D. Jokerst 1983-5-24 1775 Butte Adjacent to Highway 162, across the highway from Simmon's Rd., 0.9 miles north of the Bidwell Bar Bridge. Comment
  POM298319  Lagophylla glandulosa D. D. Keck 1930-7-25 974 Butte 6.5 miles E of Oroville on Forbestown road; Sierra Nevada. 427 Comment
  CHSC30513  Lamarckia aurea R. Banchero; M. Merryman 1980-4-9 47 B Butte Table Mtn ca. 6 mi n of Oroville on Cherokee Rd, ca. 0.3 mi w of the road. 384 Comment
  CHSC3881  Lamium amplexicaule Gary Dutton 1966-3-16 113 Butte Found along Sacramento River 1 mile east of Hamilton City. Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  CHSC749  Lamium amplexicaule R. Carter 1964-3-17 48 Butte 7 mi E of Oroville, 250 yds. up Wakefield Dr. off Feathervale on S side rd. 121 Comment
  CHSC45315  Landoltia punctata Lowell Ahart 1988-10-16 6187 Butte Dredge pond located ca. 300 ft ne of intersection of Pacific Heights Rd. and Hwy 70, ca. 1 mi s of Oroville. 45 Comment
  JEPS121980  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC31115  Lasthenia californica Roberta A. Boer 1980-4-13 9 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  JEPS108736  Lasthenia californica Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
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Jan 19 2011
  CHSC112889  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-6-1 n.s. Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  SD111946  Lasthenia fremontii B. Ertter, Jeff Strachan 1980-5-5 3247 Butte Peter Ahart Ranch, 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  UC1363795  Lasthenia fremontii Robert Ornduff 1958-4-19 4908 Butte 2 mi e Chico (on Hwy 32) Comment
  CHSC30374  Lasthenia gracilis J. D. Jokerst 1979-3-9 1142 Butte Top of North Table Mt., 20 M N of Cherokee Rd where it intersects the E edge of the section. Comment
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Jan 19 2011
  JEPS104321  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
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Jan 19 2011
  JEPS103477 Image available Lathyrus angulatus Lowell Ahart 2002-5-7 9621 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
  CHSC93071  Lathyrus brownii L. P. Janeway; B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1079 Comment
  CHSC90961  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CDA15388  Lathyrus nevadensis G. F. Hrusa 1997-4-3 13690 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  POM219421  Lathyrus nevadensis subsp. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  CHSC30819  Lathyrus sulphureus M. S. Taylor; J. D. Jokerst 1980-4-18 2536 Butte On bluffs on e side of Humbug Rd., ca. 2 mi ne of Centerville. 457 Comment
  CHSC863  Lathyrus sulphureus A. Koopman 1929-4-16 Butte U.S. Plant Introduction Garden. 60 Comment
  SEINET7042408  Lathyrus sulphureus A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC30903  Lathyrus tingitanus M. S. Taylor 1980-5-27 2716 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC109080  Laurus nobilis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17908 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC92574  Layia fremontii L. P. Janeway 2005-3-1 8340 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-BC321782  Layia fremontii John Thomas Howell 1976-4-2 51557 Butte About 2 miles SE of Chico 60 Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  CHSC72255  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte West of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  JEPS120152  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC116724  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte West side of large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS119878  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-6-2 18131 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CAS-BOT-BC215735  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near Cohasset Comment
  RSA300968  Lepechinia calycina D. C. Michener 1982-7-28 4136 Butte Open foothill woodland 0.3 miles southeast of CA 32 on Santos Way, 8.0 miles northeast of jct of CA 32 & 99 near Chico. Comment
  CHSC42702  Lepidium campestre Lowell Ahart 1987-5-6 5514 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC75261  Lepidium nitidum var. nitidum Jennifer Slater 1997-4-6 13 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  UCD115856  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS98288  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte 3 mi W of Honcut (E margin of road to Honcut Substation, on S side of Lower Honcut Road, about 200 ft E of Hwy 70) 27 Comment
  SBBG128859  Lepidium strictum G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18748 Butte Robinsons Corner, Simpson Rd, just E of jct of E Gridley Rd and CA-70 23 Comment
  CAS-BOT-BC273949  Leptochloa fusca subsp. fascicularis Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  CHSC113227  Leptosiphon bicolor Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  CHSC40675  Leptosiphon bolanderi J. D. Jokerst 1984-4-6 1963 Butte Just north of Kunkle Resv ca. 1/2 mile, south of Lago Vista Rd ca 1/2 mile. Comment
  JEPS119765  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 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
  CHSC30791  Leptosiphon filipes M. S. Taylor 1980-5-27 2677 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC45751  Leptosiphon filipes L. P. Janeway 1988-5-9 2662 Butte Ridge between hwy 32 and the piece of old rd that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  RSA725052  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1/0 air km west of Mountain House. 884 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  RSA754883  Lessingia nemaclada L. Ahart 2009-6-30 15965 Butte About 150 yards N of a small drainage, along the Guardian Rock Trail, about 150 yards SW of Pine Trail, about 1/2 air mile SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 399 Comment
  JEPS32698  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi w Oroville 45 Comment
  RSA126788  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mile west of Tres Vias 46 Comment
  CHSC28421  Lewisia cantelovii M. S. Taylor 1979-9-28 2194 Butte Butte county line at Hwy 70, between boundary and ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  JEPS113580  Lewisia cantelovii Lowell Ahart 2007-5-16 13894 Butte On the east side of Highway 70, about 150 yards no DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 463 Comment
  CHSC36360  Lewisia nevadensis J. D. Jokerst 1982-5-28 1585 Butte In meadow. Ca 1/4 mi. N. of Concow Lake. 609 Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  SEINET3887042  Lilaea scilloides Barbara Ertter 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville, flat-topped basalt butte, near parking area.; 0 396 Comment
  POM169365  Lilium humboldtii subsp. humboldtii Helen Edwards 1917-6-6 s.n. Butte De Salba Comment
  CHSC41229  Limnanthes alba J. D. Jokerst 1985-3-30 2187 Butte Roadside ditch. North edge of Wookey Rd, ca 1/2 mile east of Meridian Rd. 91 Comment
  CHSC88867  Limnanthes alba subsp. alba Christine Hantelman 2000-5-3 87 Butte In drainage cut on north side Wookey Road, 0.5 mi east of Meridian. 1920 Comment
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Apr 7 2008
  RSA256669  Limnanthes douglasii David Johnson 1974-4-20 15 Butte One mile east of Hwy. 99 along Skyway Rd. Comment
  CHSC3540  Limnanthes douglasii subsp. rosea John Francis 1966-3-21 80 Butte 0.7 mile N. of intersection of Pentz Rd. and Hwy. 99E (on Pentz Rd.). Beside road. Comment
  RSA614435  Limnanthes douglasii subsp. rosea K. L. Chambers 1962-4-21 2113 Butte Hwy. 99E, 11.6 mi, N. of its junction with Hwy. 32 in Chico. Comment
  CHSC29030  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-27 519 Butte Less than 1 mi E of Chico Muni Airport. 67 Comment
  JEPS107972  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. Comment
  CHSC82232  Limosella aquatica Lowell Ahart 2002-4-14 9483 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET10496800  Linanthus filipes Mary Susan Taylor 1980-6-14 Taylor 2870 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UCD123910  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 miles north of Oroville. Comment
  JEPS97415  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte 11/2 mi N and 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  UC1101441  Lindernia dubia var. dubia Herbert L. Mason and Verne Grant 1946-9-26 13138 Butte 3 mi w Biggs Comment
  CHSC46782  Linum bienne R. A. Schlising; F. J. Fuller 1988-6-17 4540 Butte NE of Oroville, near mouth of Forman Creek on Lake Oroville; in open, heavily disturbed area. Comment
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 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
  POM196098  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville. 1500 Comment
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  SFV856  Lithocarpus densiflorus var. echinoides F. C. Raney 1964-9-10 s. n. Butte Sierra Nevada 10 miles northeast of Feather Falls. Comment
  SEINET12219412  Lithophragma affine Unknown 4 s.n. Butte no further locality Comment
  CAS-BOT-BC430880  Lithophragma bolanderi Lowell Ahart 1980-5-25 2336 Butte Near Old Forbestown. 950 Comment
  CAS-BOT-BC430885  Lithophragma bolanderi A. A. Heller; H. E. Brown 1901-5-12 5541 Butte Grade between Clear Creek and Paradise Comment
  CHSC50343  Lithophragma campanulatum Vernon Oswald 1990-5-29 4267 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC1654  Lithophragma parviflorum var. trifoliatum V. Holt 1935-3-27 Butte Salmon Hole on Chico Creek. 152 Comment
  POM91966  Lithophragma parviflorum var. trifoliatum C. C. Bruce 1898-03 1844 Butte Plains [no specific locality given] Comment
  RSA32009  Lithophragma parviflorum var. trifoliatum A. A. Heller 1929-4-12 14830 Butte Richardson s Springs Comment
  CAS-BOT-BC317348  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville, above hotel 1676 Comment
  CHSC23721  Lobularia maritima L. V. Ritter 1969-4-12 144 Butte Ca 50 yds. s of Sandy Gulch, ca 200 yds. e of Longfellow Bridge Chico. 76 Comment
  HSC38061  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-10 2468 Butte Beside SR 191 just N of its junction with SR 70 Comment
  HSC38142  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2450 Butte At the intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CHSC94679  Lolium multiflorum Lowell Ahart 2006-9-28 13382 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  RSA718953  Lolium perenne subsp. multiflorum L. Ahart 2006-9-28 13382 Butte 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
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS117226  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico 301 Comment
  SEINET10454776  Lomatium humile Mary Susan Taylor 1979-5-6 Taylor 1992 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UC1212523  Lomatium nevadense var. parishii E. B. Copeland 1930-6-27 Butte vicinity of Jonesville; Lassen National Forest 1500 Comment
  JEPS104014  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC54337  Lonicera hispidula Lowell Ahart 1991-6-22 6664 Butte West of Springtown Road, near Lake Oroville. 304 Comment
  CHSC97322  Lonicera hispidula L. P. Janeway 2007-6-11 9039 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 0.6 km northwest of Lumpkin Road, 2.3 km west of Feather Falls town site. 777 Comment
  CAS-BOT-BC241435  Lonicera involucrata var. involucrata A. A. Heller 1928-7-10 14651 Butte At Butte Meadows Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  UC1562314  Lotus grandiflorus var. macranthus Vernon Oswald and Lowell Ahart 1990-6-27 4324 Butte ca 0.5 mi (air) nne Junction House (Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, e side of Oro-Quincy Hwy) 1097 Comment
  JEPS117151  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SFV1836  Lotus humistratus B. Fuller 1962-5-26 s. n. Butte Sierra Nevada Near Stearns Road and Harrison Road. Rocky hillside near road. 535 Comment
  UC80703  Lotus humistratus Mrs. R. M. Austin May 1883 46 Butte near Chico Comment
  SEINET12161339  Lotus humistratus S. M. Grossberg 1978-1 12 Butte ca .5miWNW of Hwy 32, 9.2miNE of Chico 366 Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  SEINET3563127 Image available Lotus purshianus Lowell Ahart 1981-8-11 3025 Butte North Honcut Creek, 1 mile N; 3 miles E of Honcut 50 Comment
  UC204722  Lotus purshianus var. purshianus A. A. Heller 1914-8-20 11692 Butte about 5 mi s Pentz (along Dry Creek); Dry Creek Comment
  RSA281672  Lotus unifoliolatus S. O. Mattoon 1978-9-25 122 Butte Middle Fork on Ponderosa For. Rd. 5 air mi. NW of Magalia. Comment
  SD58289  Ludwigia palustris W. L. Jepson 1939-8-17 19457 Butte Feather River bottom, near Oroville, 46 Comment
  CDA38131  Ludwigia palustris L. Ahart 1998-6-3 8013 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  UC727080  Lupinus A. A. Heller 1938-4-3 15010 Butte between Pebtz and Cherokee; between Pebtz and Cherokee Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  CHSC41451  Lupinus albicaulis Lowell Ahart 1986-7-2 5338 Butte In clear cut forest, north of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  UC727111  Lupinus albicaulis A. A. Heller 1940-6-5 15704 Butte along the Feather River Highway between Pulga and Arch Rock Tunnel; Feather River Highway btw Pulga and Arch Rock Tunnel Comment
  POM253000  Lupinus albicaulis subsp. purpurascens A. A. Heller 1937-5-31 15339 Butte Highway #24 near the junction with the Yankee Hill road about 21 miles from Oroville. Comment
  CHSC42531  Lupinus albicaulis var. albicaulis Lowell Ahart 1987-5-22 5681 Butte Along the dirt road, near a small bog or meadow, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  SEINET10488406  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20n,r6e,sec.31 se 1/4, nw 1/4. Forbestown quad. E side of lumpkin-laporte Road, 1 mile n of enterprise bridge over s fork feather river, ca 10 air miles E of oroville. Granitic soils. Assoc.; Diplacus grandiflorus, lupinus Stiversii, trifolium ciliolatum 457 Comment
  RSA30735  Lupinus albifrons var. eminens A. A. Heller 1915-3-25 11782 Butte Southwest end of the Marysville Buttes. Comment
  RSA325884  Lupinus andersonii var. andersonii L. Ahart, P. Ahart 1983-7-29 4250 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  RSA699513  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  HSC71549  Lupinus bicolor J. P. Smith 1973-3-22 5913 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UCD107195  Lupinus bicolor A. A. Heller 1914-3-26 11227 Butte Canon hf Big Chico creek 6 miles east of Chico. Comment
  UCD107231  Lupinus bicolor A. A. Heller 1915-4-12 11817 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  UCD107193  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte eight miles north of Oroville near the western base of Table mountain. Comment
  SEINET10452029  Lupinus bicolor subsp. pipersmithii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4291 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  SEINET10940039  Lupinus bicolor subsp. pipersmithii Lowell Ahart 1985-4-1 Ahart 4873 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  RSA32773  Lupinus bicolor subsp. tridentatus A. A. Heller 1938-4-3 15010 Butte Between Pebtz and Cherokee. Comment
  SEINET10838149  Lupinus bicolor subsp. tridentatus Johnson 1978-4-16 Johnson 2 Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset Rd. At lassen ave., 3 Mi. N of chico, butte co, calif. At edge of moist Pasture in gravelly loam with grass and other annuals of valley grassland. 61 Comment
  CHSC26255  Lupinus bicolor var. tridentatus John Steiner 1977-4-23 58 Butte Growing adjacent to s bank of Chico Creek at e end of Chico Canyon Rd. 65 Comment
  SEINET11263971  Lupinus bicolor var. tridentatus Lowell Ahart 2002-4-14 9488 Butte Disturbed area between the railroad and the Midway Rd, 50 yards north of Nelson Dlavo Road, in Nelson.; 0 37 Comment
  NY15811  Lupinus caeruleus A. A. Heller 1940-4-28 15561 Butte Along the roadside between the radio station and Hooker Oak, east of Chico...Belt of the Lower Sonoran Life Zone. Comment
  POM23589  Lupinus densiflorus var. palustris C. C. Bruce 1898-05 2453 Butte Grain fields. 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
  SEINET10841147  Lupinus latifolius subsp. longipes Mary Susan Taylor 1978-7-21 Taylor 1822 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
  RSA699517  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 549 Comment
  CHSC38506  Lupinus microcarpus var. densiflorus Vernon Oswald 1983-5-4 425 Butte Upper Bidwell Park, Chico, beside Yahi Trail 500 ft e of Day Camp. 97 Comment
  UC726764  Lupinus microcarpus var. microcarpus A. A. Heller 1940-5-13 15618 Butte three mi w Chico; w of Chico Comment
  UC1076230  Lupinus nanus Herbert L. Mason 1927-5-10 3712 Butte ne of Oroville Table Mountain (Cherokee Mine); , Cherokee Mine Comment
  JEPS117212  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  CHSC31811  Lupinus polycarpus L. Ahart 1978-5-1 1686 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET6193759 Image available Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-1 422 Butte Jonesville 1500 Comment
  SEINET194919  Lupinus rubricaulis A. A. Heller 1942-5-18 16478 Butte About a valley oak tree in a grassy field a short distance west of the Hooker oak, east of Chico. Comment
  CHSC2511  Lupinus stiversii W. Fitzwater 1958-4-19 Butte A Few miles above Paradise. Comment
  SEINET10452664  Lupinus stiversii Mary Susan Taylor 1980-5-27 Taylor 2670 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10452663  Lupinus stiversii Mary Susan Taylor 1980-5-27 Taylor 2715 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  SEINET10452667  Lupinus stiversii Mary Susan Taylor 1981-5-5 Taylor 3596 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SEINET10940052  Lupinus vallicola Lowell Ahart 1983-5-13 Ahart 3990 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET10491011  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4399 Butte Pulga sw quad. Corolla blue. N side of hiway 70, .5 mi w of arch rock tunnel, Ca 25 air mi ne of oroville. In granite gravel; with acer macrophyllum. 472 Comment
  CAS-BOT-BC441413  Luzula cascadensis Clarence R. Quick 1963-7-16 63 -45 Butte Sierra Nevada, Feather River Canyon. Section Corner Meadow, east of Pulga 1463 Comment
  CDA39245  Luzula comosa W. Gilbert,et al. 1968-3-18 s.n. Butte West side of old Hwy 70 ca. 3/4 mile south of Big Bend Rd., Yankee Hill district. 0 Comment
  RSA699515  Luzula comosa Paul Maslin 2004-3-17 4 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 378 Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS110339  Luzula comosa var. laxa Lowell Ahart 2006-7-16 12970 Butte In the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC499136  Luzula macrantha Peter F. Zika 2012-5-16 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Los Creek Reservoir 1020 Comment
  CHSC30509  Luzula macrantha N. E. H. Prouty 1980-4-7 110 Butte Along Lower Rocky Honcut Creek, south of Swedes Flat Rd. 381 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  CAS-BOT-BC441210  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 s.n. ( 4091 ?) Butte About 2 mi. E of Bidwell Bar Bridge Comment
  JEPS114964  Luzula subsessilis Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south 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
  SEINET10537472  Lychnis coronaria Mary Susan Taylor 1981-5-21 Taylor 3785 Butte T23N R5E ne sec 28, Pulga quad. In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. Granite soils in shaded filtered light; Yellow Pine Forest; 1600 ft. 488 Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  SEINET12194607  Lythrum salicaria Unknown 1984-1 4782 Butte ca 5 mi SW of Oroville, W of Pacific Heights Road 40 Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  RSA718743  Madia bolanderi L. Ahart 2006-7-25 13064 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. 1570 Comment
  CHSC36529  Madia elegans L. Ahart 1982-6-4 3543 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 304 Comment
  CHSC62529  Madia elegans subsp. elegans B. Castro; J. Jurewicz 1993-7-13 481 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 1 mi SW of the low-water crossing at confluence of French and Peavine Creeks. 615 Comment
  CHSC45220  Madia exigua Lowell Ahart 1979-6-9 1929 Butte Near a dirt road, about 1/4 mile east of Magalia. 640 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
  CAS-BOT-BC344319  Madia exigua Lowell Ahart 1988-6-23 6068 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CAS-BOT-BC342970  Madia gracilis John Thomas Howell 1967-6-22 42632 Butte Magalia 701 Comment
  CHSC36516  Madia gracilis L. Ahart 1982-5-28 3438 Butte Near North Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n of 3 mi e of Honcut. 50 Comment
  CHSC46956  Madia gracilis Lowell Ahart 1978-6-2 1750 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC97018  Madia gracilis L. P. Janeway 2007-7-26 9072 Butte Northern High Sierra Nevada. Plumas National Forest; about 160 m. west of the French Creek Road crossing of French Creek near the mouth of Ram Creek. 622 Comment
  CAS-BOT-BC342952  Madia gracilis David D. Keck 1930-7-25 979 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  UCD135708  Madia gracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte near Pulga, along Camp Creek Road. 512 Comment
  CDA34718  Madia subspicata L. Ahart 2010-6-1 16751 Butte South side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  UCD134377  Malacothrix floccifera L. Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown. Along edge of dirt road to the generator on the n side of Ponderosa Reservoir. 370 Comment
  CHSC45328  Malva neglecta Vernon Oswald 1983-10-10 1058 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC29975  Malva nicaeensis Lowell Ahart 1980-5-14 2267 Butte Peter Ahart Ranch, ca 1.5 mi N and 1 mi E of Honcut. 15 Comment
  SEINET3441872  Malva parviflora Unknown 2003-5-9 10122 Butte Dobbins, Dobbins, about 3 air miles northeast, about 0.5 miles north of Fountain Hill Road, about 3 miles south of Oregon Hill Road, west side of Fountain Hill road 20 Comment
  RSA440948  Marah fabacea K. M. Stocking 1947-4-17 29 Butte 9.6 miles from Paradise on Oroville road. 76 Comment
  CHSC20126  Marah fabacea var. agrestis M. S. Taylor 1975-5-6 552 Butte On s side of Big Chico Creed, ca. 60 ft e of Little Cafeteria, California State University, Chico. Comment
  SEINET10448098  Marah watsonii Mary Susan Taylor 1979-3-20 Taylor 1960 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
  CHSC754  Marrubium vulgare M. Davidson; Vesta Holt label. 1929-5-6 Butte Bidwell Park. 60 Comment
  JEPS87382  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte at Camp 18 Camp 18 1158 Comment
  CHSC8735  Marsilea vestita S. Chulasmai 1966-5-20 42 Butte Horseshoe (Mud) Lake. Comment
  CHSC46112  Matricaria occidentalis J. D. Jokerst 1982-4-29 1541 Butte Grey Lodge Waterfoul Management Area. Along the edge of Rutheford Rd. where it turns 90 degrees to the north in the center of section 14. Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  CHSC82435  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A 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
  CHSC110952  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the well-developed steep un-official trail +-under the upper powerlines, connecting Upper Trail to North Rim Trail. 189 Comment
  RSA0060800  Medicago praecox Lowell A. Ahart 2012-4-9 17836 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2.25 miles (air) northeast of Chico. 142 Comment
  SEINET12155151  Medicago scutellata P. L. Ricker 1912-1 3966 Butte Chico Comment
  SEINET10902002  Melica Mary Susan Taylor 1978-5-6 Taylor 1586 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC271134  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  SEINET10599298  Melica aristata Edwin B. Copel 1929-7-18 Copeland 337 Butte Jonesville. In open pine and fir woods. 1550 Comment
  CAS-BOT-BC269389  Melica californica John Thomas Howell 1962-6-16 37540 Butte Magalia 731 Comment
  CHSC38829  Melica californica Vernon Oswald 1983-3-31 230 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. between Devil's Kitchen and Parking Area R (Yahi Trail to Brown's Hole) about 2.2 mi e of the power lines. 231 Comment
  UCD80579  Melica californica CNPS SN Foothill Team 2005-3-30 SNFN 0028 a Butte CDFG North Table Mountain Wildlife Area, at the northern tip of the Y-shaped ravine that bisects the reserve. 369 Comment
  CHSC46303  Melica geyeri Vernon Oswald 1989-5-28 3787 Butte Logging road paralleling the w side of Butte Creek, 3.1 mi s of Humboldt Rd (near Butte Meadows). Bordering the road. 1292 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
  RSA718332  Melica harfordii L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  CHSC68917  Melica subulata Lowell Ahart 1997-7-11 7753 Butte Along a stream, north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS94567  Melica subulata Lowell Ahart 1997-7-11 7753 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  CAS-BOT-BC262498  Melica torreyana John Thomas Howell 1962-6-16 37538 Butte Magalia 731 Comment
  UCD89080  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  CHSC43846  Mentha canadensis B. Castro 1987-8-25 203 Butte In Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC94612  Mentha canadensis Lowell Ahart 2006-9-11 13285 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
  CHSC80658  Mentha pulegium Lowell Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS98512  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  UCR219112  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15577 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UC600540  Mentzelia dispersa E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks; Jonesville 1700 Comment
  CHSC10838  Micranthes integrifolia Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD102751  Micranthes integrifolia E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  CHSC42857  Micranthes nidifica Lowell Ahart 1987-5-22 5664 Butte In a small wash, about 1/4 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CAS-BOT-BC429200  Micranthes oregana H. F. Copeland 1929-6-1 1240 Butte Jonesville 1524 Comment
  SEINET7042712  Micropus californicus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC23462  Micropus californicus var. californicus J. R. Lee 1974-4-22 3 Butte Found 25 yds n of Skyway roadside 6 miles e of the Chico city limits. 152 Comment
  CHSC33350  Micropus californicus var. californicus R. M. Winchell 1980-4-17 3 Butte Covered Bridge along Little Butte Creek. Comment
  CHSC29734  Microseris acuminata J. D. Jokerst 1980-4-17 597 Butte Top of North Table Mt, around the edges of vernal pools. 441 Comment
  CHSC31606  Microseris douglasii subsp. tenella L. Ahart 1979-5-11 1866 Butte Peter Ahart Ranch, Honcut. In fields. 50 Comment
  SD87566  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  SEINET10496809  Microsteris gracilis Mary Susan Taylor 1973-1 Taylor 60 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  HSC43116  Mimulus angustatus Maralyn O'Meara 1974-4-20 283 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  SEINET12270108  Mimulus angustatus H. H. Heller 1937-1 439 Butte Anburn Rd, Nevada City Comment
  UC103641  Mimulus aurantiacus var. grandiflorus Mrs. R. M. Austin 235 Butte Comment
  JEPS4727  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  UC1609349  Mimulus floribundus Lowell Ahart 1993-5-10 6934 Butte about 3/4 mi n and 2 1/4 mi e Honcut (about 12 mi se of Oroville); Peter Ahart Ranch 36 Comment
  JEPS50780  Mimulus glaucescens Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9282 Butte just above Pulga Bridge; North Fork Feather River Canyon Comment
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Mar 15 2006
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  UC196162  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek Comment
  SEINET10570231  Mimulus glaucescens Mary Susan Taylor 1986-5-6 Taylor 5616 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 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
  RSA795592  Mimulus guttatus Christopher T. Ivey 2010-6-7 374 Butte Honey Run Road, 3.0 km northeast of bridge crossing Butte Creek, in wet meadow and roadside ditch. 165 Comment
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET8340981  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  RSA34063  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte On the treeless undulating plain of Table Mountain. Comment
  RSA535533  Mimulus kelloggii David M. Thompson 1988-6-8 938 Butte 0.1 mi NW of Hwy 70 along Pulga Road (Pulga Road leaves Hwy 70 at W side of Feather River bridge). 500 Comment
  CHSC44666  Mimulus moschatus R. Banchero 1980-5-12 158 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  RSA0116252  Mimulus moschatus Lowell A. Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  JEPS95802  Mimulus pilosus Lowell Ahart 1999-8-13 8133 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  CAS-BOT-BC174594  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  CHSC208  Minuartia californica P. Delaplane 1965-3-10 39 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CHSC40650  Minuartia californica Ahart; Jokerst 1985-3-24 4868 Butte Found west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  CHSC37433  Moehringia macrophylla R. A. Schlising 1982-5-19 4250 Butte E of village of Feather Falls at Lumpkin ridge. 1280 Comment
  JEPS127080  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC26717  Mollugo verticillata M. P. Hayes 1977-10-23 141 Butte In Lindo Channel, about 180 m w of its intersection with Mangrove Avenue in Chico. 35 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
  CAS-BOT-BC435073  Mollugo verticillata Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  RSA688936  Mollugo verticillata L. Ahart 1986-11-14 5478 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 37 Comment
  RSA500423  Monardella lanceolata var. lanceolata Vernon H. Oswald 1989-6-8 3801 Butte Truex Rd just n of the Hwy 70 bridge over the North Fork of the Feather River 335 Comment
  SEINET10498944  Monardella odoratissima subsp. glauca Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4083 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  HSC87333  Monardella odoratissima subsp. pallida L. P. Janeway 1987-7-4 2422 Butte Last Chance Creek, along rd. to Jones Meadow 6.5 mi. from Inskip 1524 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  UC883637  Monardella odoratissima subsp. pallida A. A. Heller 1914-7-23 11604 Butte Chico Meadows 1219 Comment
  SEINET10498947  Monardella odoratissima subsp. pallida Mary Susan Taylor 1977-8-17 Taylor 1489 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC43034  Monardella sheltonii L. P. Janeway 1987-6-13 2194 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  CHSC768  Monardella sheltonii R. M. Staley 1952-7-1 Butte Honey Run. 243 Comment
  CHSC769  Monardella sheltonii M. Underhill 1952-7-2 Butte 152 Comment
  CHSC91463  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  RSA724908  Monardella villosa subsp. sheltonii L. P. Janeway 2007-6-26 9075 Butte Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air KM northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC57135  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-22 3055 Butte Upper Coon Hollow; just below the saddle between Coon Hollow and Chips Creek. 1920 Comment
  UC1212525  Montia chamissoi H. F. Copeland July 1933 Butte vicinity of Jonesville (Lassen National Forest); Lassen National Forest Comment
  CHSC29412  Montia fontana subsp. chondrosperma Robert Schlising; R. Banchero 1980-6-2 3632 Butte 0.1 mi s of jct Humboldt road and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  UC725932  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CAS-BOT-BC445134  Montia parvifolia Mrs. C. C. Bruce 1897-6-1 1117 Butte Forest Ranch Comment
  SEINET10572672  Montia parvifolia Mary Susan Taylor 1981-5-7 Taylor 3634 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC40647  Muhlenbergia filiformis Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  CAS-BOT-BC275215  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  JEPS121964  Muhlenbergia minutissima Lowell Ahart 2014-7-7 19580 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65462  Myosurus minimus Vernon Oswald 1988-3-16 3257 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves of Durham Mutual Ditch. In a track. 67 Comment
  CHSC48456  Myriophyllum aquaticum Vernon Oswald 1987-5-3 2366 Butte East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC113377  Myriophyllum spicatum Lowell Ahart 2014-4-16 19372 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC37394  Myriophyllum spicatum R. A. Schlising 1980-8-31 3978 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  UC1586508  Najas gracillima Vernon H. Oswald and Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on south side of Highway 162, ca 3.5 miles north-northwest of Biggs. 30 Comment
  POM312985  Najas graminea H. L. Mason, Verne Grant 1946-8-15 13047 Butte #833 Irrigation Ditch, near caretaker s house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  UCD87726  Nassella cernua P. B. Kennedy 1914-5-1 4754 Butte Grade to Paradise. Comment
  CHSC54376  Nassella pulchra M. Bailey 1991-4-14 562 Butte Butte College campus. On foothills se of Steamboat Rock, in the vicinity of a drainage near the Butte Campus boundary. 144 Comment
  CHSC34704  Navarretia divaricata M. S. Taylor 1978-7-19 1764 Butte On e side of Upper Scots John Rd, ca. 3 mi n of its jct with Scots John Rd. ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC34983  Navarretia divaricata R. A. Schlising 1979-6-4 3435 Butte S of Cohasset off of Cohasset Highway. Comment
  CHSC34985  Navarretia divaricata R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3765 Butte 1.6 mi N of La Porte Road (and 1.8 mi S of S end of Sly Creek Reservoir dam). Roadside. Comment
  CHSC34987  Navarretia divaricata R. A. Schlising; R. Banchero 1980-7-11 3879 Butte Merrimac, in NE part of county. 1203 Comment
  CHSC36720  Navarretia intertexta D. H. Ikeda 1980-5-23 373 Butte 1.0 mi w of intersection of Lunt Rd. and Nelson-Bar Rd. Comment
  CHSC38601  Navarretia intertexta Vernon Oswald 1983-6-3 619 Butte Upper Bidwell Park, Chico, between Horseshoe Lake and Upper Park Rd. 97 Comment
  POM74491  Navarretia intertexta Edward Palmer 1892-6-7 2080 Butte Near Chico. Comment
  CHSC48651  Navarretia leptalea Vernon Oswald 1984-7-31 1637 Butte Scotts John Creek, 0.9 mi n of 26N27. 1786 Comment
  CHSC66962  Navarretia leucocephala subsp. leucocephala James D. Jokerst; Chuck Ricard 1993-4-12 3948 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  JEPS107890  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11818 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  JEPS95867  Navarretia leucocephala subsp. leucocephala Lowell Ahart 1999-5-21 8072 Butte about 5 miles (air) southwest of Gridley; ; 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC52109  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  CHSC31804  Navarretia tagetina L. Ahart 1977-5-8 1360 Butte Peter Ahart Ranch, Honcut. Pasture fields. 50 Comment
  CHSC36818  Navarretia viscidula subsp. purpurea D. H. Ikeda 1980-5-26 380 Butte Bidwell Park, Chico. Near end of paved road at old rifle range. Comment
  SD122582  Nemacladus interior Lowell Ahart 1984-6-8 4669 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown. North side of reservoir 370 Comment
  CHSC31113  Nemophila heterophylla Herb Allan McLane 1980-4-25 18 Butte Plumas National Forest, n of Ponderosa Way, MDM. 377 Comment
  CHSC33375  Nemophila heterophylla Steven Azevedo 1980-4-16 13 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  UC606887  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big Chico Creek and Little Chico Creek); Sierra Nevada foothills, btw Big Chico Creek and Little Chic 609 Comment
  JEPS95875  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CDA3524  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte North side of Nelson West Road just east of Chico-Butte City Road, Dodge Land. 0 Comment
  SEINET10484013  Onobrychis viciifolia Mary Susan Taylor 1982-6-24 Taylor 4730 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  SEINET10484014  Onobrychis viciifolia Mary Susan Taylor 1982-6-24 Taylor 4734 Butte T23N R5E sw/sw sec 29. Pulga SW quad. Around large landing site at end of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3500 ft. 1069 Comment
  UC1499354  Ophioglossum californicum Lowell Ahart 1983-1-29 3901 Butte 4 mi NE of Honcut ( Joie Osgood Ranch) 85 Comment
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  SEINET8360317  Oreostemma alpigenum E. B. Copeland 1930-7-26 486 Butte Jonesville. 1550 Comment
  CHSC116375  Oreostemma elatum Sara M. Taylor; Scott Batiuk 2012-7-31 52 Butte Plumas National Forest. Drosera Pond. From Quincy, head west on Hwy 89, right/north on Hwy 422 toward Smith Lake, left/west on 25N20. Continue west on 25N57, left/west on 25N59. UTM Zone 10, 4428806 N, 660224 E. 1610 Comment
  UC1586604  Orobanche fasciculata Vernon H. Oswald and Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). Comment
  JEPS126162  Orobanche vallicola Alison Colwell 2006-8-1 Butte Cal State Chico Campus, along creek outside Holt Hall. Comment
  RSA189382  Orthocarpus attenuatus L. S. Rose 1967-5-6 67055 Butte Oroville. 52 Comment
  SEINET12328376  Orthocarpus attenuatus M. S. Taylor, Oswald, V. 1984-1 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 air mi NE of Chico Comment
  RSA727539  Orthocarpus lacerus 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
  SEINET12332662  Orthocarpus purpurascens Unknown 1988-1 9 Butte North Table Mtn., Cherokee Rd ca 6 mi N of Oroville 244 Comment
  CHSC42636  Osmorhiza chilensis Vernon Oswald 1984-6-11 1272 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  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
  CHSC42643  Oxypolis occidentalis Vernon Oswald 1985-8-28 1931 Butte Ca. 0.2 mi w of Humboldt Rd. at the bridge over Butte Creek s of Cherry Hill. 1414 Comment
  CHSC63382  Packera subnuda var. subnuda V. H. Oswald; L. P. Janeway, L. Hanson 1994-6-22 6349 Butte Meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  UC600480  Paeonia brownii H. F. Copeland 1920-5-22 205 Butte Jonesville Comment
  CHSC28619  Panicum acuminatum M. S. Taylor 1979-10-3 2218 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC1609520  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte about 6 1/2 mi ne Stirling City (about 2 1/2 mi ne of Bald Mountain); ne of Bald Mountain 1584 Comment
  JEPS120150  Panicum capillare Lowell Ahart 2012-10-20 18515 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD89498  Panicum capillare Beecher Crampton 1963-9-9 6883 Butte Honcut. Comment
  CDA6386  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills; Northwest side of Highway 10, 0.6 km southwest of Pentz Road. Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  CHSC87212  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS119623  Parthenocissus quinquefolia Lowell Ahart 2012-6-21 18210 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET10509032  Paspalum distichum Mary Susan Taylor 1975-10-3 Taylor 928 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CAS-BOT-BC258766  Paspalum urvillei Lowell Ahart 1980-7-29 2496 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC108833  Pectocarya penicillata Lowell Ahart 2012-4-17 17881 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS87510  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte 3.5 air mi s Thermalito (s of the Feather Rv, Oroville Wildlife Area); Oroville Wildlife Area 36 Comment
  CHSC40767  Pectocarya pusilla Ahart; Jokerst 1985-5-10 4960 Butte In the road gutter, along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. 320 Comment
  JEPS119983  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC177581  Pedicularis attollens H. M. Hall 1914-7-22 9771 Butte near Jonesville (on Willow Creek); Willow Creek 1554 Comment
  UC196051  Pedicularis attollens A. A. Heller 1914-7-23 11609 Butte at Chico Meadows Chico Meadows; Sierra Nevada 1219 Comment
  UC600441  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  CHSC3302  Pedicularis densiflora M. L. Hillier 1966-4-23 Butte Side of rd. In and around the Stirling City area. Comment
  SBBG40344  Pedicularis densiflora J. Ingram, A. Ingram 1960-4-5 282 Butte ca. 2 mi N of Magalia Comment
  CHSC34181  Pedicularis racemosa L. Ahart 1981-9-15 3164 Butte Above the steep road cut (20 m), along French Creek, ca. 1/2 mi w of Sly Creek Reservoir. 1300 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  SEINET11718082  Pellaea andromedifolia J. D. Mott 1978-1 16 Butte Upper Miocene Canal 448 Comment
  CAS-BOT-BC69332  Pellaea brachyptera Lowell Ahart 1985-6-17 5054 Butte 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 701 Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC29215  Pellaea mucronata Carl E. Yingst 1980-4-23 18 Butte Ca. 20 km ne of Chico, 1.8 km sw of Highway 32. 454 Comment
  CHSC39309  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  HSC66085  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Cr. Canyon 100 ft. E of Lumpkin Rd. 2.5 mi. N of jct. with Forbestown rd. 18 mi. NE of Oroville 396 Comment
  SEINET10971559  Pellaea mucronata Lowell Ahart 1983-3-28 Ahart 3912 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  SBBG66459  Penstemon azureus A. A. Heller 1926-4-21 13926 Butte Rock Crk, 7 mi N of Chico Comment
  CHSC88056  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1 mile s. of this junction. 643 Comment
  CHSC3360  Penstemon heterophyllus var. purdyi M. Gregg 1966-5-7 162 Butte 3 miles north east of the Skyway on Humbug Rd. Comment
  CHSC29802  Penstemon laetus var. leptosepalus M. S. Taylor; J. D. Jokerst 1980-6-14 2878 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  POM220089  Penstemon laetus var. leptosepalus H. F. Copeland 1927-9-4 480 Butte Jonesville. Comment
  UC423490  Penstemon laetus var. leptosepalus David D. Keck 1930-7-25 981 Butte 4 mi w Forbestown (eastern Butte County); Sierra Nevada, w of Forbestown 762 Comment
  UC1012164  Penstemon laetus var. leptosepalus F. W. Pennell and A. A. Heller 1940-6-5 25682 Butte Route 24 along Feather River (above Oroville, in Lassen Nat. Forest); Lassen Nat. Forest, along Feather River 640 Comment
  CHSC30080  Penstemon newberryi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3217 Butte Humboldt Peak on the top and w side along the trail. 2154 Comment
  SEINET10548071  Penstemon newberryi Mary Susan Taylor 1978-6-24 Taylor 1650 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  UC103098  Penstemon newberryi var. newberryi Mrs. R. M. Austin June 1899 175 Butte Bluffs Little Chico Creek Comment
  UC463015  Penstemon newberryi var. newberryi E. B. Copeland 1931-6-19 Butte Big Summit , Big Summit (Jonesville) 2100 Comment
  CHSC43131  Penstemon personatus R. Banchero; R. Schlising 1981-7-25 635 Butte Ca 1.7 mi se of Brown's Ravine. Ca 1.4 air miles w of Jones Meadow. 1706 Comment
  SEINET10548093  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  SEINET10548094  Penstemon personatus Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4761 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  SEINET5329277 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte T23N R8E S5 SE1/4 Comment
  SD4595  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville, on gravel bars by Butte Creek 1500 Comment
  CAS-BOT-BC239448  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  RSA401866  Penstemon speciosus M. M. Boney 1897-1 s.n. Butte [No location information provided.] Comment
  CHSC32691  Pentagramma triangularis M. S. Taylor 1981-3-18 3416 B Butte S side of Hwy 70 near Pulga bridge. 487 Comment
  CHSC3550  Pentagramma triangularis Gary Dutton 1966-2-21 37 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N. E. CSC. 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
  JEPS120170  Pentagramma triangularis subsp. triangularis Lowell Ahart 2012-6-2 18136 Butte About 100 yards north of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC40221  Perideridia bacigalupii Vernon Oswald; L. Ahart 1985-7-28 1916 Butte Robinson Mill Rd. 2.6 mi ne of Upham Rd. 640 Comment
  CHSC42645  Perideridia bacigalupii Vernon Oswald 1985-9-5 1938 Butte Black Bart Rd. 2.1 mi se of its western junction with Forbestown Rd. 662 Comment
  UC1390033  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5987 Butte 7 mi s Paradise Comment
  UC1562390  Perideridia howellii Vernon Oswald and Lowell Ahart 1990-7-31 4420 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow, 1097 Comment
  SEINET10840955  Perideridia kelloggii Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1398 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC66898  Persicaria hydropiperoides Vernon H. Oswald 1996-10-22 8302 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CHSC1345  Persicaria lapathifolia V. Holt 1940-7-16 Butte W. Sacramento Ave., Chico. 54 Comment
  CHSC42054  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte On the bottom of a pond, about 1/10 mile sout of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC45861  Persicaria lapathifolia Lowell Ahart 1974-11-9 680 Butte On the bottom of a drained rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC419172  Persicaria maculosa Lowell Ahart 1982-10-15 3891 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CAS-BOT-BC419318  Persicaria punctata Lowell Ahart 1987-5-27 5716 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 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
  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
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  HSC32615  Petrorhagia dubia R. A. Vanbianchi 1974-4-20 231 Butte Table Mtn. 305 Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  SEINET12329569  Phacelia imbricata L. Ahart, Ahart, P. 1984-1 4654 Butte along Hwy 40, now called Dark Canyon Rd, ca 2 mi E of Old Yankee Hill, 16 mi NE of Oroville 450 Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  SD4076  Phacelia procera E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CHSC48474  Phacelia purpusii Vernon Oswald 1983-6-22 733 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. 1158 Comment
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  CHSC97006  Phalaris brachystachys B. Castro; R. A. Schlising 2005-5-29 1478 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  CHSC60999  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC35094  Phlox speciosa subsp. occidentalis Herb Allen McLane 1980-4-25 20 Butte Plumas National Forest, MDM, E side of Ponderosa Way. 390 Comment
  CAS-BOT-BC134915  Phoradendron bolleanum John Thomas Howell 1955-6-14 30443 Butte Magalia. Sierra Nevada 731 Comment
  CHSC3591  Phoradendron densum Susan Carrauthers 1966-3-6 45 Butte 1/4 mi N.E. of Magalia (city) train station on Coutelenc Road. N. of city of Paradise. Comment
  UCD102163  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  RSA325023  Phoradendron libocedri M. S. Taylor 1976-2-22 997 Butte Ca 2 miles N of Cohasset, ca 10 ft E of Cohasset Hwy. 762 Comment
  HSC94024  Phoradendron serotinum subsp. macrophyllum Mary Drumm 1996-3-17 19 Butte Gray Lodge State Wildlife Refuge near parking lot 14 18 Comment
  CHSC3292  Phoradendron villosum M. L. Hillier 1966-2-14 Butte 8.2 miles n.e. of C.S.C. Admin build. at n. end Bidwell Park. Chico. Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  UC1586516  Phyla nodiflora var. nodiflora Lowell Ahart 1991-9-14 6725 Butte about 2 mi e Honcut (Joie Osgood Ranch) 45 Comment
  CHSC31799  Phyla nodiflora var. rosea L. Ahart 1975-6-22 800 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA9258  Physalis acutifolia D. G. Kelch 2006-8-2 6 .336 Butte Along Ord Ferry Rd. Comment
  CHSC113195  Physalis lancifolia Lowell Ahart 2013-11-29 19295 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
  JEPS127067  Physalis lancifolia Lowell Ahart 2016-5-30 20891 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  SEINET10970314  Physocarpus capitatus Mary Susan Taylor 1981-5-17 Taylor 3805 Butte T22N R3E ne sec 10, Paradise SE quad. Along creek, Phillips property, 685 Wagstaff, Paradise. Riparian Woodland in Yellow Pine Forest; 1900 ft. 579 Comment
  CDA3321  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. Comment
  CDA43410  Phytolacca americana D. G. Kelch 2012-9-19 12 .355 Butte Oroville, immediately west of sewage treatment plant. Comment
  JEPS117523  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  SEINET10530358  Pilularia americana Mary Susan Taylor 1979-5-6 Taylor 2002 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  NY34618  Pinus attenuata R. C. Walsh 1987-7-7 297 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
  NY34619  Pinus attenuata R. C. Walsh 1987-7-7 297 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
  RSA5147  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC3282  Pinus halepensis M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC110234  Pinus jeffreyi L. P. Janeway 2012-10-11 11074 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
  NY61576  Pinus jeffreyi E. B. Copeland 1929-7-19 333 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
  CHSC88660  Pinus lambertiana H. Gray 2003-1-27 Butte Plumas National Forest. 914 Comment
  RSA5146  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville. 1600 Comment
  UC600581  Pinus lambertiana H. F. Copeland 1931-6-9 Butte Jonesville Comment
  CHSC31514  Pinus ponderosa L. Ahart 1976-2-15 1007 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut 53 Comment
  CHSC20119  Pinus sabiniana M. S. Taylor 1975-4-26 527 Butte On n and e side of Kunkle Reservoir, ca. 500 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  POM120221  Pinus sabiniana C. C. Bruce 1897-01 1787 Butte Foothills Comment
  SFV10661  Pinus sabiniana M. L. Vincent 1964-4-9 529 Butte Paradise. Clark road, 1 mile south of Pearson Road. Comment
  CHSC2352  Piperia elongata R. M. Staley 1952-7-2 Butte Paradise. 518 Comment
  CHSC98665  Piperia elongata B. Castro; L. P. Janeway 2005-8-1 1507 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On NW-facing slope, along old dirt road going SW off Coutelenc Rd. 780 Comment
  CHSC31785  Piperia michaelii L. Ahart 1974-5-5 450 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43592  Pistacia vera Vernon Oswald 1987-4-29 2357 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  SEINET10529826  Pityrogramma triangularis Mary Susan Taylor 1979-11-15 Taylor 2290 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10899921  Pityrogramma triangularis Mary Susan Taylor 1981-4-5 Taylor 3483 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC31258  Plagiobothrys bracteatus R. A. Schlising 1980-6-1 3610 Butte S of Paradise, at Kunkle Reservoir, off Pentz Hwy. 440 Comment
  UCD80159  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-13 SNFN 0079 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  CHSC38276  Plagiobothrys greenei Vernon Oswald 1983-3-19 200 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. ca. 300 ft w of Parking Area M (1.2 mi e of the power lines). 146 Comment
  JEPS103363  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SBBG28845  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte W of Wick's Corner N of Oroville Comment
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  SD60250  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte Near the Hooker Oak, 4.0 miles east of Chico. Comment
  CHSC23598  Plagiobothrys hispidulus K. R. Stern 1974-6-30 5768 Butte Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  CHSC49829  Plagiobothrys leptocladus Vernon Oswald 1990-4-4 4145 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 268 Comment
  CHSC52336  Plagiobothrys leptocladus J. D. Jokerst; V. Oswald 1985-4-14 2232 Butte Top of North Table Mountain north of Cherokee Rd near the easedge of the mesa. 396 Comment
  JEPS127064  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10497610  Plagiobothrys scriptus Lowell Ahart 1983-4-10 Ahart 3918 Butte Ca. l mi ne of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  UC1537691  Plagiobothrys stipitatus Gordon H. True Jr. 1936-3-26 377 Butte Gray Lodge Refuge 22 Comment
  CHSC103703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16653 Butte On the west side of old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Higway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC117424  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  HSC100801  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte ~100 yd. W of the fence, ~1/2 mi. S of the improved parking area and Cherokee Rd., N Table Mountain, 5 1/2 (air) mi. NE of Oroville. 399 Comment
  JEPS127058  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-17 20840 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  CHSC52005  Plagiobothrys stipitatus var. stipitatus B. Castro 1982-4-21 19 a Butte On and near banks of Singer Ck, ca 1 mi w of Hwy 99 off Haille road, ca 12 mi n of Chico. Among vernal pools. 60 Comment
  RSA0118696  Planodes virginica Lowell A. Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 0.4 mile east of the intersection of Pennington Road and Colusa Highway, about 5.5 miles west of Gridley. 23 Comment
  CHSC28984  Plantago bigelovii R. A. Schlising 1980-3-23 3522 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC30805  Plantago bigelovii M. S. Taylor 1980-3-1 2333 Butte Ca. 10 ft s of Neal Rd,, ca. 1/4 mi e of the city dump, ca. 1 1/4 mi e of Hwy 99, ca. 7 mi s of Chico. 121 Comment
  SEINET3449643  Plantago erecta Unknown 2003-4-10 10061 Butte Oroville, Oroville, about 2.5 air miles north, about 150 yards west of the east rim of South Table Mountain 320 Comment
  UC171664  Plantago erecta Mrs. R. M. Austin Apr 1896 248 Butte Little Chico Creek Comment
  UCD72996  Plantago erecta Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  SEINET10499851  Plantago erecta Mary Susan Taylor 1979-3-31 Taylor 1974 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
  SEINET8205338  Plantago erecta Theresa Costa 1982-4-15 11 Butte 7 mi. W of Oroville; 20 ft N table Mtn. Rd., parallel to Hwy 70. Comment
  CHSC116306  Plantago major Lowell Ahart 2015-11-18 20663 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  JEPS118034  Plantago virginica Lowell Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 58 Comment
  JEPS98311  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  JEPS94565  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CDA39507  Platanthera leucostachys T. C. Fuller 1962-7-12 9174 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  CHSC32588  Plectritis ciliosa subsp. insignis J. D. Jokerst; Jeri Donovan 1981-3-21 1260 Butte Ca. 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico in Bidwell Park). Comment
  CDA13288  Pleuricospora fimbriolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13136 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC71532  Pleuricospora fimbriolata Vernon H. Oswald 1998-7-26 9365 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. 1560 Comment
  POM319560  Poa Patricia Wilder 1971-6-23 5177 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  JEPS115963  Poa bulbosa Lowell Ahart 2009-4-22 15598 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
  CHSC54354  Poa compressa Lowell Ahart 1991-6-22 6665 Butte On the west side of Powell Creek, below the high water line of Lake Oroville, east of Springtown Road, Lake Oroville. 243 Comment
  CHSC74172  Poa compressa B. Castro 1998-7-8 807 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near edges of meadow. 929 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10659754  Poa pratensis Moyer 1972-4-16 MOYER 189 Butte S bank Chico Crk., between Warner St and New Dorm Bridge 61 Comment
  POM218975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  CAS-BOT-BC236369  Poa secunda subsp. secunda Lowell Ahart 1982-6-4 3552 Butte Ca. 1.5 miles E of Camp 18, ca. 8 miles E of Feather Falls 1000 Comment
  CHSC100913  Poa secunda subsp. secunda R. A. Schlising; R. Banchero 1981-5-19 4061 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  CHSC50706  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte On the banks on the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CHSC59849  Poa secunda subsp. secunda Michael Snider 1978-4-12 13 Butte Ca. 140 ft s of Rock Creek. 213 Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  CHSC772  Pogogyne douglasii D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  CDA25322  Polanisia dodecandra subsp. trachysperma Sterling O. Mattoon 1971-9-1 Butte Lindo Channel Creek, Cohasset Road, 0.25 mile east of Esplanade. 0 Comment
  JEPS115319  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 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
  SEINET3450754  Polygonum amphibium var. emersum Unknown 2003-6-16 10287 Butte Richvale, Richvale, about 1.5 air miles southwest, dry ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road 20 Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CAS-BOT-BC414196  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CHSC31367  Polygonum bidwelliae C. Glascock 1965-5-11 376 Butte At edge of Skyway 2.5 km s (1.85 mi. s.) of Russell Drive, Paradise. Comment
  CHSC38614  Polygonum bidwelliae Vernon Oswald 1983-5-7 444 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 304 Comment
  JEPS117281  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 120 Comment
  JEPS29840  Polygonum bidwelliae Rimo Bacigalupi and L. R. Heckard 1962-6-1 8584 Butte just off Centerville Rd about 1 mi e junction with Paradise Road 67 Comment
  UC570215  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle 274 Comment
  UCD80668  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-5 SNFN 0157 d Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  UCD99854  Polygonum bidwelliae F. T. Griggs 1978-5-31 s.n. Butte East of Rifle Range, Upper Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC414365  Polygonum californicum Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CHSC104852  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 393 Comment
  CHSC44342  Polygonum californicum Lowell Ahart 1988-5-12 5996 Butte In a mined over area, open pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD100175  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10479630  Polygonum californicum Mary Susan Taylor 1975-9-19 Taylor 919 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  SEINET10479639  Polygonum convolvulus Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4269 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CHSC98663  Polygonum douglasii subsp. majus B. Castro; L. P. Janeway 2005-8-2 1509 Butte Ca. 1.5 mi E of Magalia, 0.5 mi E of Sawmill Peak, on NNW-facing slope of ridge ca 0.2 mi W of Ponderosa Way in upper end of NW-trending drainage. 932 Comment
  CHSC113482  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CDA14467  Polygonum persicaria G. D. Barbe 1988-8-24 4308 Butte Butte Basin; Lundberg Brothers' near Richvale. 0 Comment
  SEINET10479668  Polygonum persicaria Mary Susan Taylor 1977-10-10 Taylor 1513 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  UCR188565  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13069 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET10834128  Polypodium californicum Mary Susan Taylor 1979-3-19 Taylor 1930 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  SEINET10932889  Polypodium californicum Mary Susan Taylor 1981-3-18 Taylor 3416 A Butte T22N R5E ne sec 6. Pulga SW quad. Both sides of Hwy 70 at Pulga bridge, on serpentine outcrops, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC24894  Polypodium calirhiza R. W. Crum 1976-4-28 19 Butte 5 yds s of Butte Creek, 117 yds w of Covered Bridge, 4.35 mi ene of Skywaym 6.4 mi ese of Chico. 115 Comment
  CHSC2834  Polypodium calirhiza David Prall 1965-4-16 22 Butte NW side of Humbug road 0.3 miles east of junction with Sunhill Dr. 198 Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  CAS-BOT-BC76830  Polypodium glycyrrhiza M. S. Taylor 1980-4-1 2420 Butte Along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi E of Chico. 121 Comment
  SEINET10899872  Polypodium glycyrrhiza Mary Susan Taylor 1979-10-13 Taylor 2270 Butte T23N R4E sec 29. Along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 10.7 mi N of its jct with Concow Road, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CHSC42399  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-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
  CAS-BOT-BC72267  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi n of Oroville 396 Comment
  UC123294  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin July, 1896 251 Butte Colby Comment
  CAS-BOT-BC76653  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  CAS-BOT-BC76654  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 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
  SEINET10460761  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland 397 Butte Above Jonesville 1750 Comment
  CHSC46305  Potamogeton diversifolius Vernon Oswald 1989-5-30 3788 Butte Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. In both ditch and the lake. 54 Comment
  JEPS95967  Potamogeton diversifolius Lowell Ahart 1999-6-12 8089 Butte on the west side of the dam; large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville. Common 295 Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  RSA0034523  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  POM218973  Potamogeton pusillus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC48861  Potentilla glandulosa subsp. ashlandica Vernon Oswald 1987-6-9 2967 Butte Near the headwaters of Scotts John Creek, 3.3 mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CHSC46458  Potentilla millefolia V. Oswald; L. Ahart 1989-6-27 3826 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Meadow along Butte Creek. 1767 Comment
  CAS-BOT-BC158499  Potentilla millefolia Vesta Holt 1932-5-1 s.n. Butte Mountains near Chico Comment
  SEINET9784245 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC105953  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  CHSC94460  Prosopis glandulosa var. torreyana Lowell Ahart; Mike G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 21 Comment
  SEINET10498364  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1978-7-21 Taylor 1819 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC43835  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-19 2226 Butte Along Sly Cr where rd from Challenge-LaPorte Rd rd to SE side of Sly Cr Reservoir crosses; 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  RSA283335  Prunella vulgaris var. lanceolata Lyman Benson 1932-7-28 3966 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC52699  Prunus L. P. Janeway 1990-3-25 3660 Butte Campus of California State University, Chico. N side of Glenn Hall. 59 Comment
  SEINET10838463  Prunus avium Mary Susan Taylor 1980-4-27 Taylor 2558 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC27210  Prunus cerasifera P. Moyer 1972-3-2 92 Butte N bank of Chico Creek, 100 ft. from Esplanade Bridge. 60 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  CHSC87417  Prunus subcordata R. D. Fischer 2004-4-3 107 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Pine Trail and along upper portion of 10 Mile House Trail. 426 Comment
  CHSC1586  Prunus virginiana var. demissa M. Davidson 1929-2-24 Butte Butte Creek. Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC27934  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 creek, ca. 23 mi s of Chico. 30 Comment
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CAS-BOT-BC357590  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC65419  Pseudognaphalium thermale Vernon H. Oswald 1982-11-13 14 Butte Upper Bidwell Park, Chico, ca. 500 ft. N of Upper Park Rd. 4.8 mi E of its junction with Wildwood Ave. (Browns Hole Area). Along the edge of a fire break. Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC6051  Psidium guajava M. MacArthur 1968-6-22 276 Butte NE EP bld., ca. 30 ft., Chico State College. 60 Comment
  SEINET10839136  Psilocarphus brevissimus Mary Susan Taylor 1976-3-23 Taylor 1035 Butte Abundant in Valley Grassland, ca. 1/4 mi N of Pine Creek on Pine Creek-Cana Road, ca. 11 mi N of Chico; with Plagiobothrys scriptus. 61 Comment
  CHSC25481  Psilocarphus brevissimus var. brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC361917  Psilocarphus tenellus Lowell Ahart 1983-8-16 4304 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows 1600 Comment
  CHSC12130  Pteridium aquilinum var. pubescens J. M. Pitts 1972-4-16 122 Butte 6.1 mi ne past Honeyrun Bridge on Humbug Rd. 335 Comment
  UCD137841  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch. Comment
  CHSC73418  Pyrola asarifolia subsp. asarifolia B. Castro; L. Gehrung 1995-6-20 576 Butte Ca 4 air mi NE of Feather Falls, towards northeastern end of Watson Ridge, in moist N-trending ravine, S of sharp bend in USFS Rd 22N24. 1173 Comment
  CHSC48678  Pyrola dentata Vernon Oswald 1983-7-26 916 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  JEPS115841  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 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
  RSA726483  Quercus berberidifolia L. Ahart 2007-4-30 13707 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  UC1135513  Quercus berberidifolia J. E. Sowder, C. G. Albertus 1933-6-26 94 Butte 1 mi ne Nelson's Bar; Chico Quad. 457 Comment
  UC1135528  Quercus berberidifolia C. G. Albertus 1933-6-6 16 Butte 1 mi nw Nelson's Bar; Chico Quad. 457 Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  RSA594187  Quercus chrysolepis S. O. Mattoon 1978-9-23 63 Butte Southern Cascade Mountains: Middle Fork Butte Creek Rim, Ponderosa Way Forest Road; 5 air miles NNW of Magalia. 762 Comment
  CHSC75373  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte Additional township information (T20N R04E S08 SW1/4, close to border with S07). Steep shaded south slope of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  JEPS38009  Quercus dumosa A. E. Wieslander 1927-6-29 Butte near Fourteen-mile House (Humboldt road from Chico) Comment
  UCD169286  Quercus garryana var. breweri L. P. Janeway; B. Castro 2007-5-6 8976 Butte Slopes above the east side of West Branch Feather River; along Jordan Hill Road 1 road km north-northeast of the bridge crossing; 1.9 air km north-northwest of Sawmill Peak. 555 Comment
  CHSC110993  Quercus ilex Lowell Ahart; L. Hanson, S. Bazell, J. Guardino,W. Dempsey 2012-6-7 18175 Butte On the south side of the paved park road, south of Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC105145  Quercus kelloggii Lowell Ahart 1984-7-19 903 - 4735 Butte About 1.5 miles SE of Bald Mountain, 3/4 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CHSC75375  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte Label says 'T20N R04E S08 SW1/4, close to the border with Section 7'. Above the rim of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  UC463022  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  JEPS107327  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  LA205379  Quercus vacciniifolia E. B. Copeland; 1931-8-14 626 Butte Jonesville 1500.0 Comment
  UCD47472  Quercus vacciniifolia J. I. Mallory 1970-8-20 379 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  CAS-BOT-BC104694  Quercus wislizeni E. B. Copeland 1899-5-28 s.n. Butte unspecified Comment
  UC5674  Quercus wislizeni W. H. Brewer Oct 1862 1473 Butte Table Mountain, near Oroville Comment
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Jan 19 2011
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  JEPS119727  Quercus wislizeni var. wislizeni Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, southwest of parking area, Lower Bidwell Park, Chico. Comment
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  UCSB46182  Ranunculus aquatilis var. aquatilis Reisentz, Paul 1979-5-13 Butte 1.3 miles west on Lunt Road from Highway 70 North of Oroville Comment
  POM98907  Ranunculus aquatilis var. capillaceus C. C. Bruce 1897-04 1892 Butte [No location data on label] Comment
  CHSC23896  Ranunculus arvensis Fred Michaelis 1975-4-22 314 Butte Ca. 0.2 mi e of Hicks Ln., ca. 0.6 mi s of Keefer Rd., ca. 6.5 mi n-nw of Chico, near creek. 76 Comment
  CAS-BOT-BC378988  Ranunculus arvensis Lowell Ahart 1977-4-28 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CDA3504  Ranunculus arvensis L. L. Heinrichs 1970-5-9 Butte East Biggs Road, Biggs. 0 Comment
  RSA0114656  Ranunculus bonariensis var. trisepalus Lowell A. Ahart 2015-5-5 20138 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  CHSC88973  Ranunculus canus Christine Hantelman 2000-3-2 13 Butte In old almond orchard at end of Wookey Road. 112 Comment
  SEINET7083219  Ranunculus canus L. Ahart 2003-5-28 10228 Butte Edges of a large vernal pool 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence west of Cherokee Road, North Table Mountain. About 7 miles north of Oroville. 39? deg. 35' 3.5" North Latitude; 121? deg. 35' 7.3" West Longitude. EX MWI. Comment
  UC765740  Ranunculus canus R. F. Hoover 1937-5-18 2232 Butte 2 mi s Nelson Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  POM99158  Ranunculus hystriculus R. M. Austin 1888-03 33 Butte Bluffs, Little Chico Creek Comment
  SEINET10965667  Ranunculus muricatus Mary Susan Taylor 1976-3-30 Taylor 1041 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  RSA32929  Ranunculus occidentalis var. eisenii A. A. Heller 1938-4-23 15054 Butte At the summit on the Feaather River Hwy, 20 miles from Oroville. Comment
  CHSC109064  Ranunculus occidentalis var. occidentalis Lowell Ahart 2012-4-30 17921 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
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  UC1594623  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CAS-BOT-BC59883  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  CAS-BOT-BC59884  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  CHSC33718  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-4-8 3505 Butte Serpentine ridge on n side of logging landing site just w of power lines, off logging road ca. 0.5 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  POM136575  Rhamnus tomentella subsp. tomentella A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  POM85713  Rhamnus tomentella subsp. tomentella C. C. Bruce 1898-01 1889 Butte Valley Comment
  UC1609009  Rhus trilobata Lowell Ahart 1993-8-4 6929 Butte 2.5 mi s Oroville Airport (e side of gravel road, e of Feather River); Oroville Wildlife Area 30 Comment
  POM87358  Rhus trilobata var. pilosissima C. C. Bruce 1897-05 1819 Butte Little Chico Comment
  CHSC44063  Rhynchospora californica L. P. Janeway 1988-6-14 2761 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC44065  Rhynchospora californica L. P. Janeway 1988-5-30 2714 Butte Cyn of Big Chico Cr; upper Bidwell Park, 3.7 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  CHSC45136  Rhynchospora capitellata Vernon Oswald; Lowell Ahart 1987-7-19 3135 Butte Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank. 1706 Comment
  UC1260479  Rhynchospora capitellata Lowell Ahart 1980-9-10 2618 Butte near Bean Creek Rd. (se of Little Bald Rock, ne of Oroville) 1100 Comment
  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  UC1127530  Ribes roezlii P. L. Johannsen 1936-7-16 929 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  SEINET10482950  Ribes roezlii Mary Susan Taylor 1977-7-15 Taylor 1414 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  CAS-BOT-BC198952  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC340983  Robinia pseudoacacia Virginia Hagaman 1966-4-27 148 Butte By bridge on Chico State college campus Comment
  RSA0035336  Robinia pseudoacacia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18002 Butte On the east side of the horse path, about 20 yards north 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. 76 Comment
  SBBG128612  Robinia pseudoacacia L. Ahart, L. Hanson, S. Bazell, J. Guardino 2012-5-10 18002 Butte E side of the horse path, ca. 20 yards N of paved park rd, SW part of old walnut orchard, S of Vallombrosa Avenue, ca. 0.25 mi W of Peterson Drive, Lower Bidwell Park, Chico 76 Comment
  CAS-BOT-BC74457  Rorippa curvisiliqua Lowell Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. 33 Comment
  JEPS103453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 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
  CHSC116130  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-11-7 20630 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
  CHSC94560  Rorippa curvisiliqua var. orientalis Lowell Ahart 2006-9-11 13279 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
  CHSC10759  Rorippa nasturtium-aquaticum Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38423  Rorippa nasturtium-aquaticum Vernon Oswald 1983-5-11 477 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. and 1400 ft e of Parking Area N (Salmon Hole). 182 Comment
  CHSC531  Rorippa nasturtium-aquaticum R. Morford 1933-3-7 Butte Cherokee. 396 Comment
  CHSC113373  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC58894  Rorippa palustris var. occidentalis Lowell Ahart 1992-4-7 6745 Butte On the bottom and sides of irrigation ditches, on the south side of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  JEPS122221  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-25 19396 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  POM365846  Rosa bridgesii M. M. Boney 1897-1 1724 Butte [No location information provided.] Comment
  UC176212  Rosa bridgesii A. A. Heller 1913-6-7 10809 Butte near Stirling 1074 Comment
  CHSC109649  Rosa californica Lowell Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path. Lower Bidwell Prk. 77 Comment
  CHSC78098  Rosa canina Shelly Pirtle 1997-4-9 29 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek; Field 19-20. Near Butte Creek. Comment
  JEPS103255  Rosa eglanteria Lowell Ahart 2002-9-8 9933 Butte 1 3/4 mi N by road from town of Feather Falls (W side of paved road, 1/4 mi S of the first parking spaces at the Feather Falls Trailhead) 854 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
  JEPS119746  Rosa multiflora Lowell Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC102517  Rosa pisocarpa Lowell Ahart 2009-5-30 15800 Butte South of a small stream, meadow, 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
  SEINET11688672  Rostraria cristata T. B. Devine 1980-1 719 Butte at jct of Pentz Rd & Pentz-Magalia Hwy Comment
  CDA5118  Rotala indica G. D. Barbe, C. Wick, June McCaskill 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs. 0 Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC112600  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CAS-BOT-BC156614  Rubus bifrons John Thomas Howell 1962-6-15 37453 Butte Magalia 731 Comment
  SEINET10483571  Rubus glaucifolius Mary Susan Taylor 1980-9-12 Taylor 3329 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC22814  Rubus laciniatus Robert A. Schlising 1964-6-11 2720 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CAS-BOT-BC148367  Rubus leucodermis Clarence R. Quick 1952-6-30 52 -98 Butte Ridge-top, Big Bar Mt. east of Pulga - Sierra Nevada Comment
  CHSC48871  Rubus leucodermis Vernon Oswald 1984-5-21 1194 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.25 mi s of the Little West Fork of the West Branch of the Feather River. 853 Comment
  CHSC73432  Rubus leucodermis H. Durio 1995-8-1 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  CAS-BOT-BC147199  Rubus parviflorus Clarence R. Quick 1952-7-1 52 -124 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  CHSC46047  Rubus parviflorus L. P. Janeway 1987-6-5 2152 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from OroQuincy Hwy. Edge of rd near cr. 1097 Comment
  CHSC106575  Rubus ursinus B. Ignacio 2008-4-10 Butte Dark Canyon Rd. Found on side of road on North facing cliff in shade of Pinus ponderosa Laws. 545 Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CHSC46864  Rudbeckia hirta var. pulcherrima Vernon Oswald 1989-8-29 3972 Butte North side of Butte Creek downstream from the bridge on Humboldt Rd just s of Cherry Hill, ca. 2 mi (air) wsw of Jonesville. Meadow bordering the creek. 1414 Comment
  CHSC50683  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte Just below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 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
  CAS-BOT-BC421733  Rumex conglomeratus Lowell Ahart 1982-6-27 3653 Butte About 2 1/4 miles north and 1/4 mile east of Honcut, Peter Ahart Ranch 50 Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC33685  Rumex dentatus L. Ahart 1981-5-16 2804 Butte In low places on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC58270  Rumex dentatus Lowell Ahart 1992-5-23 6777 Butte Fallow rice field, on the west side of Goodspeed Watt Road, about 1/2 mile south of Butte City Highway. 30 Comment
  CAS-BOT-BC123629  Rupertia hallii Harvey Monroe Hall 1914-7-31 9825 Butte Humboldt Road 1066 Comment
  UC219368  Rupertia hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  UCSB64010  Sagina apetala Ahart, Lowell 1985-3-4 Butte At the Palermo Post Office, Palermo 36 Comment
  CHSC113224  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-2 19433 Butte On the south side and below the high water line of the reservoir, about 2 1/2 miles (air) west of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 288 Comment
  CHSC113510  Sagina saginoides Lowell Ahart 2014-7-16 19680 Butte Northeast area of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  POM161668  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Joneville, near Butte Creek 1750 Comment
  JEPS88387  Sagittaria longiloba Vernon H. Oswald and Lowell Ahart 1996-7-22 8087 Butte on the e side of Tract 7.3, Sanctuary I in a roadside ditch s Refuge Headquarters (U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  RSA129740  Salix exigua J. E. Sowder 1933-6-6 82 Butte 1 mile NW of Nelson's Bar. 457 Comment
  CHSC111974  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 dmile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC109067  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  JEPS119882  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the bottom of Beatson Hollow, about 1mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC107966  Salix geyeriana H. F. Copeland 1920-5-21 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC107832  Salix gooddingii Gordon H. True 1971-4-8 6455 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CHSC108853  Salix lasiolepis Lowell Ahart 2012-3-9 17773 Butte Middle of North Honcut Crek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 -1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  CHSC65014  Salix lasiolepis Vernon Oswald 1987-4-22 2342 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, NE of Hwy 99. 68 Comment
  CHSC65781  Salix lasiolepis Vernon H. Oswald 1996-4-10 7349 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 4.2, Sanctuary 1. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CAS-BOT-BC129582  Salix lasiolepis var. lasiolepis A. A. Heller 1919-4-12 13014 Butte Cherokee mine in the blue oak digger pine belt. Comment
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  JEPS121898  Salix lemmonii Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CAS-BOT-BC125060  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  CAS-BOT-BC129491  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  POM167251  Salix melanopsis E. B. Copeland 1903-5-28 3278 Butte Chico. Butte Creek. Comment
  SEINET12003436  Salix nigra var. vallicola Unknown 1936-1 13456 Butte Along Mud Creek near Chico Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  SEINET6185567  Salpichroa rhomboidea R. McKee 1918-9-23 7409 Butte Chico Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  SEINET12121443  Sanicula bipinnata S. E. Bigbee 1984-1 35 Butte ca 50 yds S of Butte Creek & ca 320 yds W of Covered Bridge, 6.2 i ESE of Chico 121 Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC31003  Sanicula tuberosa M. S. Taylor 1978-7-19 1775 A Butte On e side of Upper Scott's John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  UC1605153  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte N of Oroville (S wall of Flag Canyon near top of an old track from bottom of canyon onto NW edge of North Table Mountain) 341 Comment
  CHSC109755  Saponaria officinalis Lowell Ahart 2012-10-20 18497 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UC392198  Sarcodes sanguinea E. B. Copeland Jul 1929 Butte Jonesville 472 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  UC1602228  Saxifraga oregana H. F. Copeland jun 1929 1240 Butte Jonesville 1524 Comment
  UC591531  Saxifraga oregana H. F. Copeland 1935-6-25 Butte Jonesville 1500 Comment
  UC858207  Saxifraga oregana A. A. Heller 1914-6-22 11493 Butte Chico meadows Chico 1219 Comment
  CAS-BOT-BC111374  Schoenoplectus acutus var. occidentalis Lowell Ahart 1981-8-31 3061 Butte Wyandotte Lake, E or Oroville. 450 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
  RSA127022  Schoenoplectus acutus var. occidentalis H. S. Yates 1936-8-14 6122 Butte 10 miles S. of Durham 30 Comment
  CHSC56800  Scirpus congdonii L. P. Janeway 1986-9-1 1831 Butte Near wet meadow and willows at east end of Philbrook Reservoir. 1691 Comment
  CHSC116225  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CAS-BOT-BC425114  Scutellaria austiniae Mrs. C. C. Bruce 1897-5-1 1835 Butte Big Chico Comment
  CHSC42834  Scutellaria siphocampyloides L. P. Janeway 1987-5-20 2069 Butte Turnout and overgrown seep area on east side of hwy 70 just S of the 'rockhouse' and 0.5 mi S of Jarbo Gap. 670 Comment
  RSA0115081  Scutellaria siphocampyloides Lowell A. Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  CHSC57224  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Rd. on the north side of Thermalito Diversion Pool about one-quarter mile east of the old bridge site. 76 Comment
  CHSC65572  Scutellaria tuberosa R. Banchero 1980-4-19 117 Butte Ca 1.5 air mi N of town of Feather Falls, ca 0.7 mi NE of Feather Falls (the falls), at the head of the trail on back side of Falls. 1036 Comment
  UC1609162  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1993-3-24 5240 Butte e side of Dry Creek Canyon (n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek, 2 mi n of Pentz Road) 274 Comment
  CHSC109160  Sedella pumila Lowell Ahart 2012-5-12 18937 Butte On the south side of Humboldt Trail, about 200 yards east of Guardian Trail, about 1/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-1/2 miles (air) northeast of Chico. 361 Comment
  POM264334  Sedella pumila H. L. Mason 1941-4-4 12409 Butte 3 miles S of Chico near junction of road to Paradise. 91 Comment
  CHSC32684  Sedum albomarginatum M. S. Taylor; D. Hemphill 1981-3-18 3418 Butte N side of Pulga Rd, at its jct with Hwy 70 at Pulg ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  SEINET10449668  Sedum albomarginatum Mary Susan Taylor 1981-5-11 Taylor 3687 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  UC150824  Selaginella hansenii A. A. Heller 1902-5-6 5466 Butte near Clear Creek Berry Canyon Comment
  SEINET10470981  Selaginella hansenii Lawrence P. Janeway 1984-10-8 Janeway 1179 Butte Pulga SW quad. T22N R5E SW 1/4 of sec. 7, 2000 feet. Along Hwy 70 above North Fork Feather River. On steep S-facing serpentine outcrop; open. 610 Comment
  SEINET10530438  Selaginella hansenii Mary Susan Taylor 1980-2-24 Taylor 2322 Butte T23N R2E nw 1/4 sec 21. On bluffs overlooking the waterfall on E branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi NE of Chico. 244 Comment
  SEINET10966097  Selaginella hansenii Mary Susan Taylor 1979-3-20 Taylor 1959 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
  SEINET11716021  Selaginella hansenii P. L. Venable 1978-1 12 Butte 6 mi N of Oroville, 1 mi W of Cherokee Road 305 Comment
  CAS-BOT-BC69727  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte County Line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  HSC85729  Selaginella wallacei L. P. Janeway 1984-10-20 1187 Butte On outcrop spur ridge making 'Crooked Bar' of the middle fork of the Feather River, near Milsap Bar 579 Comment
  SBBG32387  Senecio eurycephalus L. S. Rose 1967-6-11 Butte 3 mi S of Pulga, Feather River Cyn Comment
  SFV11410  Senecio hydrophiloides M. L. Vincent 1965-4-17 638 Butte 6 miles north of New Feather River bridge (west fork). Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC57122  Senecio vulgaris R. L. Ondricek-Fallscheer 1983-5-10 173 Butte In chicken pen of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 201 Comment
  CHSC90648  Senecio vulgaris Lowell Ahart 2005-4-2 11681 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
  JEPS116118  Senecio vulgaris Lowell Ahart, John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CDA7658  Senecio vulgaris A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  CHSC86849  Sericocarpus oregonensis L. P. Janeway; Gavin Blosser 2003-8-27 7970 Butte Northern Sierra Nevada Foothills. East side of McCabe Creek arm of South Fork Feather River arm of Lake Oroville; 1.0 km (air) south-southwest of the southern end of Enterprise Bridge. 282 Comment
  CAS-BOT-BC364726  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1982-8-16 4986 Butte Just n of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia 731 Comment
  CHSC43289  Setaria gracilis Lowell Ahart 1987-9-24 5899 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC112631  Setaria parviflora Lowell Ahart 2013-10-16 19118 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
  CAS-BOT-BC240118  Setaria pumila Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA772427  Setaria pumila L. Ahart 2010-9-24 17237 Butte Near SW edge of the Golf Course, about 10 yrds south of the footbridge, along trail from the end of Centennial avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  CHSC94557  Setaria viridis Lowell Ahart 2006-9-11 13309 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
  CHSC30872  Sherardia arvensis J. D. Jokerst 1979-4-2 1175 Butte Top of North Table Mt along the sides of Cherokee Rd at the East side of the Mt. Comment
  JEPS127082  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC203663  Sidalcea calycosa subsp. calycosa A. A. Heller 1914-5-8 11381 Butte Comment
  HSC87160  Sidalcea hartwegii S. T. Heaston 1982-4-8 17 Butte SE of Chico, 7 mi. SE of the junction of Hwy. 99 and Skyway, 100 m S off of Skyway 305 Comment
  UCSB63716  Sidalcea hartwegii Bufton, Gail 1990-4-17 Butte Ca. 50 m S of Butte Creek and 0.3 km w of Covered Bridge, 10.2 km ese of Chico 120 Comment
  POM84285  Sidalcea hirsuta C. C. Bruce 1897-04 1924 Butte Along Sloughs Butte Comment
  UC1013145  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19536 Butte about 8 mi e Oroville (Oroville-Forbestown Road); e of Oroville, Oroville-Forbestown Road Comment
  CDA13282  Sidalcea oregana subsp. oregana G. F. Hrusa, T. D. Wilfred 1996-7-9 13130 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  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
  JEPS115622  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  CHSC104795  Silene antirrhina L. P. Janeway 2010-6-19 10026 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  UC1562447  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville); s of the Feather River 30 Comment
  RSA4443  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville; near the Summit. 2100 Comment
  CHSC93502  Silene gallica Lowell Ahart 2006-5-8 12592 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 336 Comment
  CHSC21275  Silene laciniata subsp. californica M. S. Taylor 1975-4-30 377 Butte Along both sides of Humbug Rd, ca. 19 mi e of Chico. 365 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  CHSC46830  Silene lemmonii R. A. Schlising; L. P. Janeway 1988-7-1 4557 Butte NE part of county, NE of Snow Mountain, near small un-named lake. Comment
  LA204646  Silene occidentalis E. B. Copeland; 1930-7-28 635 Butte Jonesville 1550.0 Comment
  CHSC115421  Silybum marianum Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail near golf course. 89 Comment
  CHSC21250  Sinapis arvensis M. S. Taylor 1975-3-25 424 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. Comment
  CHSC38425  Sisymbrium officinale Vernon Oswald 1983-4-4 276 Butte Upper Bidwell Park, Chico, on the north rim of the level of Horseshoe L. 146 Comment
  CHSC42970  Solanum americanum Lowell Ahart 1987-7-8 5790 Butte Along Walker Plains Road, about 1/2 mile east of Highway 70, near Pulga. 457 Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CDA5908  Solanum carolinense Agricultural Commissioner 1959-7-13 Butte Western Pacific Railroad, Oroville. 0 Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  CAS-BOT-BC157461  Solanum umbelliferum M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville 365 Comment
  UC179683  Solidago elongata A. A. Heller 1914-8-6 11639 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC365841  Soliva sessilis Lowell Ahart 1989-5-10 6219 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 274 Comment
  CHSC107291  Sonchus asper subsp. asper L. P. Janeway 2011-6-29 10408 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
  JEPS118037  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CAS-BOT-BC158897  Sorbus scopulina A. A. Heller 1928-7-25 14706 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  UC1099803  Sparganium eurycarpum var. eurycarpum Herbert L. Mason and Verne Grant 1946-8-14 13016 Butte Butte Sink; Sacramento Outing Club Comment
  CHSC3747  Spartium junceum R. L. Adams 1964-4-14 57 Butte Elliot Road 1/2 mile from Skyway on E, side of road, Paradise. Comment
  CHSC34999  Spergularia bocconi A. Ratcliff; R. A. Schlising 1980-4-6 3550 Butte About 5 mi S of Chico, near junction of Oroville-Chico Road and Neal Road. At roadside. Comment
  JEPS123828  Spergularia marina Lowell Ahart 2015-4-24 20061 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS120960  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, 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
  UC478509  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit 2100 Comment
  CAS-BOT-BC421452  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC39530  Spiranthes porrifolia Lowell Ahart 1983-6-12 4045 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC78350  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte Southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC59058  Sporobolus cryptandrus Lowell Ahart 1992-7-23 6834 Butte Along the edge of Oroville Chico Highway, at the intersection of Shippee Road and Openshaw Road. 60 Comment
  CHSC65426  Stachys ajugoides var. rigida Vernon Oswald 1983-7-19 875 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. 822 Comment
  CHSC43644  Stachys pycnantha B. Castro 1987-8-25 205 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  JEPS115720  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage 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
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  RSA0109093  Stachys pycnantha L. Ahart 2006-9-11 13286 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC113463  Stellaria crispa Lowell Ahart 2014-7-16 19689 Butte Along the south edge of a large wet meadow (some bog), about 110 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC395119  Stellaria nitens G. A. Fischer 1929-6-28 63 Butte Chico Meadows, Lassen Forest 1341 Comment
  CHSC48280  Stellaria obtusa Vernon Oswald 1987-6-9 2975 Butte Ca. 3 mi ne of Jonesville on the road paralleling Scotts John Creek, 2 mi n of the road connecting Humboldt and Humbug roads. Near the creek. 1828 Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  JEPS120987  Stipa lemmonii var. lemmonii Lowell Ahart 2013-5-27 18714 Butte On E side of Black Bart Road, about 0.75 miles by road SW of intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  JEPS108756  Streptanthus Lowell Ahart 2006-7-16 12958 A Butte N side of Humboldt Road, abut 1 1/2 air mi SW of Butte Meadows 1435 Comment
  SEINET10448513  Streptanthus campestris Lowell Ahart 1983-9-17 Ahart 4434 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC33117  Streptanthus polygaloides M. S. Taylor 1981-5-21 3765 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
  CHSC43439  Streptanthus polygaloides Lowell Ahart 1979-6-9 1928 Butte Near the edge of the dirt road that goes to the West Branch of the Feather River, about 1/2 mile east of Magalia/ 640 Comment
  CHSC95054  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte Northern High Sierra Nevada. Northwest side of Rim Road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 847 Comment
  CHSC97726  Streptanthus polygaloides Lowell Ahart 2007-11-3 14552 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 271 Comment
  SEINET10448514  Streptanthus polygaloides Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4178 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  SEINET10448517  Streptanthus polygaloides Lowell Ahart 1985-5-15 Ahart 4975 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
  CAS-BOT-BC87512  Streptanthus tortuosus Lowell Ahart 1982-6-4 3541 Butte 1.5 mile east of Camp 18, about 8 miles east of Feather Falls. 1000 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
  UC856777  Streptanthus tortuosus var. orbiculatus A. A. Heller 1938-4-14 15031 Butte low rock ledges where shallow ravines cut through the lava rock on flat mt. summit Table Mountain Comment
  CHSC21273  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1973-4-21 13 Butte Ca. 4 mi s of Cherokee, ca. 100 yds w of Cherokee Rd, on Table Mountain. 373 Comment
  CHSC52375  Styrax officinalis var. redivivus L. P. Janeway 1989-5-17 3255 Butte Along rd to Forbestown Diversion Dam 2.5 mi from Forbestown Rd. Single small shrub at top of cutbank. 845 Comment
  UCD40395  Symphoricarpos acutus Rodney Gale Myatt 1971-6-13 723 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  UC29849  Symphyotrichum bracteolatum H. E. Brown Nov 15 1896-Nov 30 1896 80 Butte near Clear Creek 53 Comment
  CAS-BOT-BC97694  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte along the edge of the Oroville Quincy Highway, near the Berry Creek School 518 Comment
  CHSC69669  Symphyotrichum chilense Vernon H. Oswald 1988-5-18 3319 Butte West edge of Kunkie Reservoir SE of Paradise. 445 Comment
  CAS-BOT-BC97693  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC99040  Symphyotrichum cusickii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  CAS-BOT-BC98059  Symphyotrichum lentum A. A. Heller 1914-9-3 11760 Butte On the Chico-Hamilton Road 6 miles from Chico Comment
  CHSC105795  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC58881  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1992-8-2 6905 Butte In Concow Meadow, about 3 (air) miles northeast of Concow Reservoir. 1097 Comment
  UCD136687  Symphyotrichum subulatum var. parviflorum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC111125  Taraxacum erythrospermum Lowell Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 and 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SEINET11793729  Taraxacum officinale Unknown 1966-1 37 Butte Chico, East 5th & Olive Streets Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  CHSC27970  Thalictrum fendleri M. S. Taylor 1978-7-19 1758 Butte On w side of Upper Scotts John Rd, ca. 3 1/2 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET10957989 Image available Thalictrum fendleri R. M. Austin Austin 146 Butte Colby, Butte Co. Comment
  CHSC40323  Thalictrum fendleri var. polycarpum Ahart; Jokerst 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CAS-BOT-BC88216  Thysanocarpus curvipes Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC88234  Thysanocarpus curvipes Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain. Comment
  CHSC33706  Thysanocarpus curvipes L. Ahart 1981-3-29 2709 Butte Along edge of Ponderosa Way, ca 1.5 mi n of Ponderosa Dam near Forbestown. 500 Comment
  CHSC39778  Thysanocarpus curvipes G. K. Mead 1976-4-14 18 Butte Ca. 10 ft from S side of Honeyrun Road and 15.6 mi ESE Chico. 137 Comment
  CHSC43448  Thysanocarpus curvipes Lowell Ahart 1977-4-28 1321 Butte Along Fields Ridge Road, about 8 miles south-east of Feather Falls. 914 Comment
  SJSU15298  Thysanocarpus curvipes Lisa Morton 2002-3-30 12 Butte Upper Bidwell Park, along N, Rim Trail at top of butte. 80 Comment
  CAS-BOT-BC88233  Thysanocarpus curvipes Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 31 Butte Northwest of Paradise on Honey-Run Road, 1.0 miles down from Canyon rim at 2nd small creek. 381 Comment