Search Results — 2000 specimen records retrieved (1620 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC330577  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  UC1171585  Acer circinatum J. E. Sowder 1933-7-6 106 Butte 2 mi ne Cohassett; Chico Quad., ne of Cohassett Comment
  SD2927  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 Butte Jonesville 2100 Comment
  CHSC100952  Acer macrophyllum L. P. Janeway 2007-7-25 9227 Butte Cascade Range Foothills.. Upper Bidwell Park, Chico; 6 m north of Big Chico Creek and about 6 m higher than the creek, between Upper Park Road and Yahi Trail, between Day Camp and the power lines. 91 Comment
  CHSC81448  Acer macrophyllum Sabrina Wright 2000-4-18 Butte North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Approximately 50 ft from edge of water. 914 Comment
  CHSC84636  Acer macrophyllum Matt Quinn 2001-4-4 15 Butte Along Honey Run Creek. From the confluence with Little Butte Creek upstream approximately 2 miles. 213 Comment
  CHSC38314  Achillea millefolium Vernon Oswald 1983-5-27 568 Butte Upper Bidwell Park, Chico, on the s edge of the Golf Course s of Chico Creek. 97 Comment
  SEINET10937968  Achillea millefolium Mary Susan Taylor 1978-5-6 Taylor 1587 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10937970  Achillea millefolium var. lanulosa Mary Susan Taylor 1978-7-19 Taylor 1750 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
Read comments
Jun 8 2012
  CAS-BOT-BC218050  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1.5 miles SE of Stirling City 1100 Comment
  CHSC31423  Achnatherum stillmanii L. Ahart 1980-9-10 2626 Butte Ca. 1/10 mi e of Little Bald Rock, ne of Oroville. 335 Comment
  CHSC4132  Achyrachaena mollis R. Carter 1966-4-21 355 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
  UCSB63601  Achyrachaena mollis Shannon, Gail 1986-4-18 Butte Richardson Springs; 4.1 mi. NE of Chico; jct. of Richardson Springs road/Cohasset road 60 Comment
  CHSC28528  Acmispon americanus var. americanus M. S. Taylor 1979-8-4 2171 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC97720  Acmispon americanus var. americanus Lowell Ahart 2007-10-31 14518 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  UCD103766  Acmispon americanus var. americanus Collector unknown Date unknown 12845 Butte Butte Meadows. Comment
  CHSC113919  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Orovolle, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of OrovIlle. Collected about 1/4 mile west of point above, according to label. 259 Comment
  CHSC48512  Acmispon argophyllus var. fremontii Vernon Oswald 1985-5-28 1785 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. 1011 Comment
  CHSC28156  Acmispon brachycarpus R. J. Goedl 1979-4-14 10 Butte Ca. 6 mi n of Oroville 0.5 mi w of Cherokee Mountain Road. 365 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC98946  Acmispon nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC69113  Aconitum columbianum Lowell Ahart 1997-8-1 7768 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC34190  Actaea rubra L. Ahart 1981-9-21 3194 Butte Along Pinkard Creek, ca. 1/2 mi n of the Lost Creek Reservoir. 1100 Comment
  CHSC53693  Actaea rubra Kirsten Tarp 1983-7-28 307 Butte Chico Meadows, ca. 1.0 mi n of Butte Meadows, near county line. At stream side. 1295 Comment
  SEINET10573363  Actaea rubra R. M. Austin Austin 275 Butte Comment
  SEINET10473549  Adenocaulon bicolor Mary Susan Taylor 1977-8-17 Taylor 1466 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC20048  Adenostoma fasciculatum M. S. Taylor 1975-4-25 494 Butte Ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  RSA122230  Adenostoma fasciculatum var. fasciculatum A. E. Wieslander 1936-3-30 626 Butte Keefer Ridge 549 Comment
  UC811162  Adiantum aleuticum Mrs. R. M. Austin June 1879 Butte near Cherokee Mines Cold Canyon 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
  UC1481811  Adiantum jordanii Mrs. Carlotta C. Hall 1914-7-17 9760 Butte near Chico and Paradise (Honeyrun Grade) Comment
  CDA42880  Aegilops triuncialis L. Ahart 2012-5-2 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC44366  Agoseris grandiflora Lowell Ahart 1988-6-21 6054 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
  CHSC109559  Agoseris grandiflora var. leptophylla L. P. Janeway 2012-8-1 10916 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  SEINET7067148  Agoseris heterophylla A. G. Vestal 1947-4-30 s.n. Butte South Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 623844mE, 4378757mN. Comment
  CHSC25052  Agoseris heterophylla var. cryptopleura G. N. Steger 1972-4-15 Butte Along top of N Table Mt., 4 mi S of Cherokee on Cherokee rd and 100-200 yds W of Cherokee rd. 396 Comment
Read comments
Jan 19 2011
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 780 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CHSC97343  Agrimonia gryposepala L. P. Janeway 2007-8-6 9153 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Diffuse patch of this on slope next to east side of pond (with Pycnanthemum californicum) and scattered elsewhere around the pond berm. 776 Comment
  CHSC116597  Agrostis capillaris L. P. Janeway 2015-6-30 11791 Butte Northern High Sierra Nevada. Plumas National Forest; along road 19N19 1.3 road-km east of Ponderosa Way; north-northwest slopes halfway between Sunset Hill and Ponderosa Dam (South Fork Feather River). 701 Comment
  JEPS107757  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  CHSC46100  Agrostis exarata J. D. Jokerst; R. A. Schlising 1982-10-7 1656 B Butte Coon Hollow along forest service rd. 27N74, 1/2 mile west of the West Branch of the Feather River. Comment
  SEINET10789990  Agrostis exarata Lowell Ahart 1988-7-31 Ahart 6152 Butte Spike Bentgrass. On damp soil, around stream rounded boulders, on the east side of West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City, Butte County, California. 914 Comment
  CHSC51030  Agrostis exarata var. monolepis Lowell Ahart 1990-7-15 6560 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC30300  Agrostis hendersonii M. S. Taylor 1980-5-27 2710 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  JEPS107754  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  UC1594697  Agrostis perennans Lowell Ahart 1992-7-21 6809 Butte about 2 (air ) mi ne Philbrook Reservoir (s side of Coon Hollow); Coon Hollow 1737 Comment
  CAS-BOT-BC138774  Agrostis scabra Lowell Ahart 1987-7-8 5815 Butte Along a side road near Walker Plains Road, about 1.5 mile northeast of Coyote Gap, about 6 miles northeast of Pulga. 1341 Comment
  CDA13331  Agrostis scabra G. F. Hrusa, T. D. Wilfred 1996-7-9 13177 Butte Sierra Nevada; Dry, open woods of Ponderosa pine approx. 0.4 m from Hwy 162 on 22N89. Perennial. Uncommon here. Comment
  CHSC42402  Agrostis scabra Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC64253  Agrostis scabra S. C. Morey 1983-8-3 693 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA716149  Agrostis stolonifera L. Ahart 2005-7-13 12150 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
  CHSC49702  Agrostis thurberiana Vernon Oswald 1987-7-16 3119 Butte Slightly w of the Skyway, 1.4 mi s of Inskip. 1426 Comment
  CAS-BOT-BC48025  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Foothills, east of Oroville Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  SACT000179  Aira caespitosa Herbert Copeland 1930-7-25 Butte Tall clumps, in meadow below cabin Comment
  CHSC39616  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  HSC41092  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-4-14 6046 Butte Bruce Ln. between Humboldt Rd. and Skyway Rd., E of Chico 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
  SEINET10483795  Alchemilla occidentalis Lowell Ahart 1983-5-7 Ahart 3968 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 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
  SEINET9753572 Image available Alisma lanceolatum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC34032  Alisma triviale L. Ahart 1981-7-7 2926 Butte Along the edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  CAS-BOT-BC445432  Alisma triviale Lowell Ahart 1981-7-7 2926 Butte Along edge of Black Bart Road, 1/2 mi. west of Oroville Forbestown Road, west of Forbestown. 700 Comment
  UCR187083  Allium Anna M. Hurlbutt, C. R. Weeks 2007-4-26 010 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC20678  Allium amplectens M. S. Taylor 1975-6-30 822 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC27792  Allium amplectens Rod Bunday 1978-4-25 16 Butte Ca. 200 ft w of Cohasset Rd ca. 12 mi ne of East Ave. between Chico and Cohasset. 304 Comment
  CHSC29976  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut. 50 Comment
  CHSC30981  Allium amplectens M. S. Taylor 1980-5-24 2744 Butte Peter Ahart Ranch, Honcut, along Rocky Honcut Creek. 50 Comment
  CAS-BOT-BC460732  Allium amplectens Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA21176  Allium amplectens Carl B. Wolf 1937-5-14 8668 Butte Sacramento Valley, 4 1/2 miles W of Oroville on road to Richvale. 46 Comment
  CHSC36902  Allium campanulatum R. A. Schlising 1980-6-10 3665 Butte NW part of county, along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. 1341 Comment
  RSA4217  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Butte County: Jonesville, alt 1500m. 1500 Comment
  CHSC3325  Allium cratericola M. Gregg 1966-3-28 58 Butte On Cherokee Rd. to the top of Table Mt. North of Oroville. 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
  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
  CHSC101176  Allium membranaceum Matt Brown; Jamie Tuitele-Lewis 2005-6-3 Butte Northern High Sierra Nevada. East side of Cedar Creek and about 200 m uphill from it; 2.0 km northwest of Arch Rock Tunnel. UTM Zone 10: 4414000N, 636100E. 1280 Comment
  CAS-BOT-BC472967  Allium membranaceum C. R. Quick 1955-6-20 55 -32 Butte Steep NE slope above Mill Creek Road (Pulga Road), 2.5 miles easterly from Feather River Highway Comment
  SEINET12048269  Allium membranaceum M. Ownbey, Ownbey, G. B. 1946-1 2945 Butte just E of Brush Creek Ranger Station Comment
  CHSC20258  Allium peninsulare E. L. McNichols 1972-4-6 Butte Collected at Devil's Kitchen, Bidwell Park. Comment
  CAS-BOT-BC132069  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham 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
  CAS-BOT-BC132115  Allium sanbornii var. sanbornii Lowell Ahart 1980-7-29 2501 Butte Along the edge of Forbestown Road Comment
  CAS-BOT-BC475439  Allium serra S. P. Rixford 1918-5-1 s.n. Butte Chico Comment
  CHSC23633  Alnus incana subsp. tenuifolia M. S. Taylor 1976-4-4 1050 Butte On Ernies Island, ca. 50 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows, on Butte Creek. 1706 Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET269930  Alnus rhombifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows 1219 Comment
  CHSC42837  Alopecurus aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC59038  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte On the south side of the Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  RSA0118723  Alopecurus carolinianus Lowell A. Ahart 2014-4-25 19403 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 31 Comment
  UCD55884  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  CHSC35536  Alopecurus saccatus Marilyn Lee 1968-4-19 141 Butte Table., ca 3/7 mile W. of Cherokee Road. Comment
  CHSC39627  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  HSC95373  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte N Table Mt., 7 mi. N of Oroville, 1.75 mi. W of iron gate and fence, W of Cherokee Rd. 272 Comment
  SEINET10511201  Alopecurus saccatus A. Arthur Heller 1902-5-3 Heller 5445 Butte Near Nelson. Comment
  CHSC6637  Amaranthus M. MacArthur 1968-6-16 339 Butte NE end of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  JEPS119522  Amaranthus albus Lowell Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SEINET10478813  Amaranthus blitoides Mary Susan Taylor Taylor 774 Butte Weedy or cultivated plants of Chico. 61 Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  JEPS128595  Amaranthus deflexus Lowell Ahart 2017-8-1 21652 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CHSC43583  Amaranthus rudis Vernon Oswald 1983-10-10 1061 Butte Bidwell State Park on the e bank of the Sacramento R. w of Chico. Between the parking lot at the boat ramp and the river. Comment
  CHSC37116  Ambrosia psilostachya L. Ahart; M. S. Taylor 1982-10-11 3859 Butte Ca. /1 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC136691  Amelanchier alnifolia var. pumila Lowell Ahart 1980-5-19 2315 Butte Near bridge, South Fork of Feather River 800 Comment
  POM196088  Amelanchier pallida H. F. Copeland 1929-6-10 1208 Butte Jonesville. 1524 Comment
  SBBG119944  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CHSC84033  Ammannia robusta Lowell Ahart 2003-6-19 10294 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  CHSC136  Amsinckia eastwoodiae E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  JEPS34382  Amsinckia eastwoodiae Rimo Bacigalupi and L. Heckard 1963-5-14 8858 Butte Along Paradise Skyway, 0.5 mile west of junction with the Humbug Road (just SE of Chico). Comment
  SEINET10497620  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 Ahart 4872 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
  CHSC34233  Amsinckia intermedia M. S. Taylor 1981-4-14 3527 Butte Nw corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  CHSC3615  Amsinckia intermedia R. Jaegel 1966-3-2 37 Butte 4 miles Northeast of Chico. On a south slope of a small drainage in Upper Bidwell Park. Comment
  JEPS107370  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UCD119608  Amsinckia intermedia A. A. Heller 1918-3-30 12981 Butte 8 miles N of Oroville. Comment
  CHSC38270  Amsinckia menziesii Vernon Oswald 1983-4-20 353 Butte Upper Bidwell Park, Chico, beside equestrian trail on the n side of Upper Park Rd. ca. 300 ft e of its junction with Wildwood Ave. 85 Comment
  RSA0089989  Amsinckia parviflora A. A. Heller 1938-4-22 s.n. Butte Along U.S. Highway #99E near the junction with the Cana road. 76 Comment
  CHSC30883  Anagallis arvensis J. D. Jokerst 1979-4-6 1177 Butte Top of North Table Mt, ca 200 m N of the intersection of Cherokee Rd and the east edge of the mountain 396 Comment
  CHSC116707  Anagallis minima Lowell Ahart 2016-5-15 20832 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC55052  Anaphalis margaritacea Lowell Ahart 1991-8-25 6710 Butte On the north side of Four Trees Road, near a small branch of Mill Creek, about 5 miles east of Highway 70. 1066 Comment
  CAS-BOT-BC45251  Ancistrocarphus filagineus A. A. Heller; H. E. Brown 1902-5-12 5535 Butte Grade between Clear Creek and Paradise Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  CHSC66070  Anthemis cotula Vernon H. Oswald 1996-5-23 7636 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  UCD80764  Antirrhinum subcordatum CNPS SN Foothill Team 2006-3-1 Survey Butte CSU Chico, Big Chico Creek Ecological Reserve. Comment
Read comments
Jun 5 2011
  CHSC38681  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1983-6-9 660 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 256 Comment
  CHSC1535  Aphanes occidentalis M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC114984  Aphyllon purpureum Lowell Ahart 2015-4-18 20056 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) eastof Oroville. 752 Comment
  SEINET10906701  Apocynum cannabinum var. pubescens Lowell Ahart 1985-6-30 Ahart 5072 Butte About 7 miles south-east of Oroville. Comment
  CHSC80516  Arabidopsis thaliana Lowell Ahart 2001-3-22 8719 Butte On the east side of a small swale and very near the north fence, about 100 yards east of the Olive Orchard and Palermo Honcut Highway, Peter Ahart Ranch, about 11 miles south of Oroville. 32 Comment
  SEINET10448429  Arabis sparsiflora var. arcuata Lowell Ahart 1983-5-28 Ahart 4017 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  CHSC11789  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville, Butte County. 1550 Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  SEINET1912947  Arceuthobium abietinum R. L. Mathiasen 2010-1 1066 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36 1750 Comment
  POM180839  Arceuthobium abietinum Unspecified 1928-8-14 759 Butte Neighborhood of Jonesville. Near Butte Creek, above Jonesville. 1524 Comment
  SEINET10492815  Arceuthobium abietinum Mary Susan Taylor 1977-8-17 Taylor 1486 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
  CHSC31221  Arceuthobium occidentale M. S. Taylor 1979-3-20 1953 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of Bridge over n fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  JEPS115634  Arceuthobium occidentale Lowell Ahart 2009-8-23 16301 Butte South edge 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 259 Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  UCD52250  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51567 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38826  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  CHSC38435  Arctostaphylos manzanita subsp. manzanita Vernon Oswald 1982-12-17 24 Butte Bidwell Park, Chico, near the road ca 100 ft E of the parking area 2.7 mi E of the junction of Upper Park Rd and Wildwood Ave. 115 Comment
  CHSC585  Arctostaphylos manzanita subsp. manzanita L. Stone 1930-4-6 Butte Near Forest Ranch. 548 Comment
  CHSC21242  Arctostaphylos mewukka M. S. Taylor 1975-9-12 910 Butte Ca. 24 mi NE of Chico, ca. 500 yds W of Hwy 32. 1066 Comment
  UCD22541  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mile NE of Swain Hill, 1 mile WSW of Quartz Hill, 50 ft. east of Grubbes Creek Road. 1219 Comment
  JEPS118412  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2011-7-9 17566 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  RSA795329  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  CAS-BOT-BC38574  Arctostaphylos mewukka subsp. truei W. K. Fisher 1899-1-1 s.n. Butte Berry Creek. Comment
  CHSC11941  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC46715  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  SBBG60044  Arctostaphylos patula E. B. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville Comment
  RSA584780  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Just northeast of Pulga Bridge. 418 Comment
  UCD51951  Arctostaphylos truei John Thomas Howell 1975-6-15 51112 Butte 609 Comment
  SEINET11987499  Arctostaphylos truei Unknown 1981-1 s.n. Butte 3 mi NE of Magalia Comment
  SEINET11989215  Arctostaphylos truei J. T. Howell 1975-1 51083 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47383  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51099 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48298  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CHSC10635  Arctostaphylos viscida subsp. viscida Lowell Ahart 1968-3-3 Butte Swede's Flat Road. 304 Comment
  JEPS119510  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17762 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  JEPS119564  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC1121413  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-7-20 117 Butte 2 1/2 mi w Nimshew; Chico Quadrangle Comment
  JEPS98293  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET8521980  Aristida oligantha Kelly W. Allred 1991-1 5480 Butte along Honcut Road, 2 miles north of junction with Palermo Road, in annual valley grassland 91 Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 Comment
  CHSC107079  Aristolochia californica V. Lockie 2010-3-2 Butte Found in the Fernwall area above Big Chico Creek, Upper Bidwell Park. 89 Comment
  CHSC32658  Aristolochia californica M. S. Taylor; L. Hanson 1981-3-16 3407 Butte Embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  SEINET12090193  Aristolochia californica R. J. Goedl 1979-1 3 Butte 6 mi N of Oroville, 60 yds W of Cherokee Mountain Road 366 Comment
  CHSC100875  Arnica longifolia L. P. Janeway; Linus Gog 2008-7-18 9436 Butte Northern High Sierra Nevada. Along Philbrook Creek betweeen the east end of Philbrook Reservoir and Concow Road. Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  JEPS120016  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 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
  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
  CHSC101158  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  POM76153  Asclepias cordifolia C. C. Bruce 1897-05 s.n. Butte Little Chico Comment
  SEINET10969214  Asclepias fascicularis Mary Susan Taylor 1975-6-25 Taylor 791 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-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CHSC36896  Aspidotis densa L. Ahart 1982-6-15 3566 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC38247  Aspidotis densa Vernon Oswald 1983-6-14 681 Butte Upper Bidwell Park, Chico, at Bear Hole. 97 Comment
  JEPS97430  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte 7 mi N of Oroville (North Table Mountain, along edge of dirt road, about 1/10 mi SE of reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  CHSC88249  Asyneuma prenanthoides Lowell Ahart 2004-7-11 11247 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  RSA725005  Athyrium filix-femina subsp. cyclosorum L. Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  SEINET10532287  Athyrium filix-femina var. californicum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4194 A Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  JEPS104163  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-8-26 10546 Butte On the west side of the dirt road, 1/4 mile north of where Pinkard Creek flows into the Lost Creek Reservoir, ca 1/2 mile north of the Lost Creek Reservoir Dam, 1 mile (air) nw of the Sly Creek Reservoir Dam. 996 Comment
  CHSC27732  Atriplex argentea var. mohavensis Robert A. Schlising 1978-10-27 3346 Butte Chico; disturbed field of California State University campus, near S. P. T. Co. RR and West Sacramento Avenue. Comment
  CHSC34124  Atriplex lentiformis L. Ahart 1981-9-10 3144 Butte Near the entrance to the Gray Lodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UCD97538  Atriplex micrantha L. Ahart 1982-9-9 3766 Butte 100 meters n of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  SEINET516429  Atriplex prostrata Lowell Ahart 1981-1 3221 Butte Small part from a large plant, growing on damp soil on the sides of a deep ditch, on the N side of the rd. and near the entrance to the Gray Lodge Waterfowl Management Area Headquarters, W of Pennington Rd., about 12 mi. SW of Gridley. 30 Comment
  CHSC34050  Atriplex serenana L. Ahart 1981-7-26 3007 Butte Along edge of dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that lead to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC176602  Atriplex serenana var. serenana Lowell Ahart 1981-9-10 3145 Butte Gray Lodge, SW of Gridley 35 Comment
  CHSC4394  Avena barbata R. L. Smith 1966-5-15 Butte Paradise, 5 mi sw of Post Office. Comment
  SEINET11683505  Avena barbata Unknown 1969-1 44 Butte on Hwy 99, 6 mi N of Gridley Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  RSA755370  Azolla filiculoides Lowell A. Ahart 2009-10-8 16412 Butte In a deep large ditch on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 air miles southwest of Gridley. 20 Comment
  RSA518702  Azolla filiculoides Lowell A. Ahart 1990-5-20 6473 Butte About 1/4 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road, about 4.5 miles south-west of Oroville 30 Comment
  CAS-BOT-BC98008  Baccharis pilularis Lowell Ahart 1981-11-6 3225 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC103164  Baccharis pilularis Lowell Ahart 2009-11-19 16544 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 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
  CHSC94976  Baccharis salicifolia Lowell Ahart 2006-10-12 13503 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  CHSC57219  Balsamorhiza deltoidea Vernon H. Oswald; Lowell Ahart 1992-3-24 4891 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.2 mi north of Burma Rd. 76 Comment
  CAS-BOT-BC106427  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1828 Comment
  UCR51787  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville 1677 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC34774  Bassia hyssopifolia L. Ahart 1981-11-6 3222 Butte On banks of deep ditch, n side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC127  Berberis aquifolium var. dictyota F. Roos 1930-4-5 Butte Paradise. 548 Comment
  CHSC7073  Berberis aquifolium var. dictyota R. B. Watkins 1969-3-31 12 Butte .6 mi e of Jarbo gap, 2yds. S on Forest Service Rd. #23N12. 670 Comment
  CAS-BOT-BC75548  Berberis dictyota Lowell Ahart 1983-4-14 3935 Butte About 0.75 mile west of the Forbestown Reserve, about 3.25 miles northeast of Forbestown. 450 Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  CHSC5962  Berberis thunbergii M. MacArthur 1968-6-17 178 Butte Location: ca. 10 ft. NW of Auditorium SW entrance, Chico State College campus. 60 Comment
  JEPS113568  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 29 Comment
  CHSC28384  Bidens frondosa J. D. Jokerst 1979-10-13 384 Butte Intersection of Concow Cr. and Jordan Hill Rd., 0.8 mi W of Concow Rd. Comment
  HSC97042  Bidens frondosa L. Ahart 2006-9-11 13274 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC94060  Bistorta bistortoides R. D. Fischer 2004-6-20 783 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants growing on the moist soil of the eastern side of Chico Meadows. 1371 Comment
  CHSC285  Blennosperma nanum J. Turner 1930-4-18 Butte Chico near Plant Gardens. 54 Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  HSC68163  Blennosperma nanum var. nanum J. P. Smith, J. O. Sawyer 1973-4-14 6051 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UC383601  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville 1550 Comment
  RSA166329  Boisduvalia glabella D. M. Moore 1960-6-1 89 Butte 1.1 mile W of U.S. 40A on road to Honcut Comment
  UC1100857  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  SEINET10470854  Botrychium multifidum subsp. silaifolium Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4752 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CHSC110143  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope +-overlooking Bear Hole on Big Chico Creek, between Middle Trail and Upper Trail. 166 Comment
  CHSC68550  Brachypodium distachyon Lowell Ahart 1997-5-18 7740 Butte Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC98562  Brachypodium distachyon L. P. Janeway; B. Castro 2007-5-19 8980 Butte Cascade Range Foothills. Bottom of un-named drainage on southeast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. Half way down the slope from bluffs to dry creek; southeast-facing slope. 99 Comment
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  CAS-BOT-BC30310  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte About 2 miles north and 0.25 mile east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  RSA724877  Brickellia californica L. Ahart 2006-9-11 13335 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
  CHSC58285  Briza maxima Lowell Ahart 1992-5-9 6767 Butte On the west side of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  CHSC88987  Briza minor Christine Hantelman 2000-4-8 65 Butte Oroville. On side of track along south edge of Table Mountain golf course. 60 Comment
  CHSC90998  Briza minor Lowell Ahart 2005-4-14 11710 A Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS116080  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  RSA755005  Briza minor L. Ahart 2009-5-23 15729 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10753292  Briza minor Christopher 2003-4-21 CHRISTOPHER 229 Butte Off Hwy. 99. Ahart Family Ranch along boundary on access road and edge of field. Vernal pool prairie and roadside ditch. With Limnanthes, Lilaea, Briza and Spergula 41 Comment
  SEINET3884842  Brodiaea coronaria Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -8 Butte Magalia, near Skyline road to Paradise.; 0 168 Comment
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  CHSC40079  Brodiaea elegans A. A. Heller 1938-5-22 15105 Butte Near Chico airport. Upper Sonoran Life Zone. Comment
  JEPS7735  Brodiaea elegans subsp. elegans W. L. Jepson 1934-5-4 16620 Butte 2 1/2 mi ne Cana Comment
  PASA500  Brodiaea hyacinthina Frank W. Peirson 1926-6-21 Butte Butte Meadow, Humbolt Road Comment
  SEINET7072710  Brodiaea minor A. G. Vestal 1963-5-7 s.n. Butte 5.2 miles southwest of Bangor on the road to Bangor. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 632998E, 4355465mN. 39? deg. 20' 25" North Latitude, -121? deg. 27' 24" West Longitude. Coordinate datum: NAD 27) Comment
  UC725523  Brodiaea nana A. A. Heller 1927-5-3 14364 Butte ten mi n Chico Comment
  CHSC92885  Brodiaea sierrae L. P. Janeway 2005-6-26 8428 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  CAS-BOT-BC486480  Brodiaea sierrae John Thomas Howell 1955-6-14 30436 Butte Magalia 731 Comment
  CAS-BOT-BC149547  Bromus carinatus var. carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile southwest of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS106169  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC49515  Bromus carinatus var. marginatus Vernon Oswald; Lowell Ahart 1987-7-1 3088 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connection Humboldt and Humbug Rds,ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC90832  Bromus catharticus Lowell Ahart 2005-5-2 11767 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
  CHSC94291  Bromus ciliatus Lowell Ahart 2006-7-16 12975 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC66172  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7660 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC6722  Bromus diandrus B. Anthony 1968-3-25 413 Butte Chico State College Campus, Chico. Comment
  CHSC45206  Bromus hordeaceus Lowell Ahart 1972-4-18 84 Butte Hills, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA700239  Bromus inermis L. Ahart 2004-7-23 11307 Butte on the west side of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1508 Comment
  JEPS113901  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km N-NE of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  CAS-BOT-BC162455  Bromus laevipes John Thomas Howell 1955-6-14 30459 Butte Magalia. 731 Comment
  CAS-BOT-BC161614  Bromus sterilis Peter H. Raven 1953-5-9 5429 Butte 8 miles from Bangor on Oroville road. Comment
  UCR115097  Bromus suksdorfii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC161505  Bromus tectorum Lowell Ahart 1987-5-6 5552 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10901250  Bromus tectorum Lowell Ahart 1987-5-6 Ahart 5552 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM196128  Bromus vulgaris H. F. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  UCD60257  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. Comment
  CAS-BOT-BC18157  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 975 Comment
  RSA794453  Bulbostylis capillaris P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25708 Butte 0.5 air miles northeast of Little Bald Rock, northeast of and below Bean Creek Road 0.6 road miles from Bald Rock Road. Northern Sierra Nevada Highlands. 1005 Comment
  CAS-BOT-BC438356  Calandrinia ciliata John Thomas Howell 1978-4-17 52844 Butte Table Mountain 381 Comment
  CHSC25150  Calandrinia ciliata var. menziesii Willis Ball 1970-2-24 71 Butte Growing along road in Upper Bidwell Park Ca. 2 miles N. E. of Bidwell Golf Course building. 121 Comment
  CHSC46286  Callitriche heterophylla var. bolanderi Vernon Oswald 1989-5-17 3777 Butte Wurlitzer Unit, Vina Plains Preserve. Along the edge of the farm pond. 56 Comment
  CHSC46485  Callitriche heterophylla var. bolanderi Lowell Ahart 1974-4-11 373 Butte In 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. 36 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC24842  Calochortus albus T. L. Reynolds 1976-4-23 58 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC44979  Calochortus albus Elizabeth L. Knight 1988-4-16 9 Butte Ca. 3.5 m n of Oroville on Table Mountain and 0.5 m s of Shirmer Ravine, 15 ft w of Cherokee Road. 152 Comment
  RSA369031  Calochortus albus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SEINET12046804  Calochortus albus D. J. Funk 1976-1 17 Butte ca 5 ft W of Humbug Rd & 150 yd NW of covered bridge on Butte Creek, 6.4 mi ESE of Chico 110 Comment
  CHSC36540  Calochortus leichtlinii L. Ahart 1982-6-4 3551 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. Comment
  CHSC44981  Calochortus monophyllus Phillip Scott 1988-4-23 45 Butte Cohasset Road, ca. 3.0 mi n of Cohasset. 1066 Comment
  CHSC90184  Calochortus monophyllus Thomas M. Scott 1989-4-19 9 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  CAS-BOT-BC492603  Calochortus monophyllus L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CAS-BOT-BC493343  Calochortus superbus Lowell Ahart 1980-5-25 2318 Butte Along Swedes Flat Road, near Bangor Comment
  JEPS55641  Calochortus superbus Marion Cave 1967-5-16 Butte 4 mi n Oroville (on road to Paradise) Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC2465  Calochortus tolmiei P. Delaplane 1965-5-4 52 Butte South side of Concow Road. South side of Lake Concow. 1219 Comment
  CHSC44529  Calochortus tolmiei Lowell Ahart 1988-3-27 5941 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 350 Comment
  CAS-BOT-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC494350  Calochortus tolmiei A. A. Heller 1928-4-29 14614 Butte Magalla in rich soil about serpentine rocks, in yellow pine belt. 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
  UC478519  Caltha biflora E. B. Copeland June, 1930 639 Butte Jonesville. 1550 Comment
  RSA4438  Caltha howellii E. B. Copeland 1930-06 639 Butte Jonesville. 1500 Comment
  JEPS120843  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC92149  Calycadenia oppositifolia J. Molter 2005-6-3 891 B Butte Found 10' to 20' SW of Lunt Road, approx. 1/4 mile NW of Hwy. 70 on serpentine barren that parallels the road. 481 Comment
  RSA788196  Calycadenia oppositifolia R. L. Carr 1977-7-6 2033 Butte Big Ridge Rd, 2.3 mi SE of jct with Oroville-Quincy Hwy, S of Berry Creek. 610 Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  UC1971697  Calycadenia pauciflora 1981-5-23 2185 Butte 0.5 mi W of Hwy 99, 0.5 mi N of Broyles Road, ca. 10 mi N of Chico 58 Comment
  JEPS105683  Calycadenia truncata L. P. Janeway and John Hunt 2003-6-20 7857 Butte Northern Sierra Nevasda Foothills; W side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn 296 Comment
  JEPS120621  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  SD50979  Calycadenia truncata Darley F. Howe 1960-9-20 2981 Butte 8 miles from Oroville, north fork of Feather River Canyon. 149 Comment
  SEINET10872000  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4182 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CAS-BOT-BC275385  Calycadenia truncata var. truncata John Thomas Howell 1959-9-20 34693 Butte 9 miles NE of Oroville on Feather River Highway Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC117664  Calycanthus occidentalis Lowell Ahart 2016-8-30 21318 Butte In ravine on the north side of La Porte Road, about one mile west of Marysville Road, about 4 miles (air) southwest of Brownsville. 609 Comment
  JEPS127135  Calycanthus occidentalis Lowell Ahart 2016-8-29 21317 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  POM97739  Calycanthus occidentalis Mrs. R. M. Austin 1883-05 12 Butte Butte Creek. Comment
  CHSC57129  Calyptridium monospermum L. P. Janeway 1987-6-26 2313 Butte Camp Creek, 0.4 mi east Granite Ridge near crossing of the road to Lynch and Logue Meadows. 1365 Comment
  UC426906  Calyptridium umbellatum E. B. Copeland 1930-7-12 413 A Butte above Jonesville 2000 Comment
  CHSC37362  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3683 Butte Along Highway 32, 7.5 miles S of Tehama/Butte County line. Comment
  CHSC95113  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. 860 Comment
  SEINET10496583  Calystegia malacophylla Mary Susan Taylor 1978-7-19 Taylor 1769 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  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
  CHSC100834  Calystegia occidentalis M. S. Taylor 1982-6-24 4735 Butte At end of spur rd along Flea Mt Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  POM219430  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  CHSC444  Calystegia occidentalis subsp. occidentalis J. Baynes 1929-5-20 Butte Paradise. 457 Comment
  RSA4474  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  CHSC46229  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1064 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  CHSC50051  Camissonia contorta Lowell Ahart 1990-3-28 6427 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  POM31997  Camissonia contorta Copeland 1903-4-10 3033 Butte Chico. Comment
  UC600503  Campanula prenanthoides H. F. Copeland 1924-8-11 599 Butte Jonesville Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC35028  Capsella bursa-pastoris Linyi Maslin 1981-2-25 3 Butte Upper Bidwell Park near Horseshoe Lake, Chico. 72 Comment
  CHSC90646  Capsella bursa-pastoris Lowell Ahart 2005-4-2 11683 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
  CHSC34525  Cardamine californica var. californica R. E. Preston 1982-1-31 158 Butte S rim of Chico Creek canyon above Salmon Hole, ca. 5 1/2 mi ne of Chico. 304 Comment
  CHSC34482  Cardamine oligosperma A. K. Bos 1978-3-11 2 Butte Along Cohasset Hwy, 1 mi ne intersection Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  CHSC38416  Cardamine oligosperma Vernon Oswald 1983-3-4 109 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. at a point 2.4 mi e of the power lines. 256 Comment
  CHSC87200  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. 502 Comment
  CHSC92532  Cardamine pachystigma L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-4-26 8369 Butte Northern High Sierra Nevada. Plumas National Forest; Ridgetop between Cirby Creek and Flea Valley Creek drainages; along Concow Road 0.9 road km north-northwest of junction with Rim Road (Ponderosa Way). 1042 Comment
  CHSC82711  Cardamine pachystigma var. pachystigma L. P. Janeway; B. Castro 2002-3-27 7455 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about half way down to North Fork Feather River; 1.1 km south-east of mouth of China Gulch. Dirt road cutbank and adjacent forest slope. 549 Comment
  CAS-BOT-BC18208  Carex John Thomas Howell 1967-6-22 42605 Butte Sierra Nevada. Magalia. 701 Comment
  SEINET10585935  Carex abrupta Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3020 Butte The Carices of Butte county. T26N, R5E, Jonesville quad (15") NW1/4 of sec 21. Along Willow Cr, 1 mile W of Humbug Rd. On dry disturbed forest floor (Jeffery pine and white fir). With C. integra, C. fracta, C, jepsonii. 1798 Comment
  CDA13290  Carex amplifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13138 Butte Plumas National Forest; Dense colony on shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC103110  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, 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
  CHSC43901  Carex amplifolia L. P. Janeway 1987-5-10 2042 Butte Wet mdw at jct of Skyway and Doe Mill/Humbug Rd (just N of DaSabla Reservoir). 838 Comment
  JEPS94568  Carex amplifolia Lowell Ahart 1997-7-11 7749 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
  UCD140080  Carex amplifolia L. P. Janeway 1988-6-16 2793 Butte West Br Butte Creek near Lomo; 0.1 mile from Humboldt Road along Cedar Loop Road. 1158 Comment
  JEPS121965  Carex angustata Lowell Ahart 2014-7-7 19579 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 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
  CAS-BOT-BC19202  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butt City. Comment
  CHSC52274  Carex bolanderi L. P. Janeway 1988-7-2 2951 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS110391  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  HSC89408  Carex cusickii Sandy Morey 1983-7-23 575 Butte Cherry Hill Meadow, on N side of Humboldt Rd., 3.2 mi. E of Butte Meadows 1414 Comment
  JEPS121376 Image available Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, W northern Sierra Nevada Highlands (n SNH). Comment
  CHSC110144  Carex densa L. P. Janeway 2012-5-2 10813 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek between the creek and Upper Park Road, near Parking Area I. 105 Comment
  CHSC96835  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
  CAS-BOT-BC19996  Carex feta A. A. Heller 1913-6-4 10781 Butte Table Mountain Olive Ranch north of Oroville. Comment
  CAS-BOT-BC21241  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  SEINET12398383  Carex globosa J. T. Howell, G. H. True 1969-4-9 45490 Butte Sierra Nevada Mountains; Magalia 701 Comment
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. Comment
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC110350  Carex hirtissima L. P. Janeway 2013-5-5 11096 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC52869  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3031 Butte Large mdw at head'waters' of Willow Cr. 1935 Comment
  CHSC52915  Carex integra L. P. Janeway 1988-6-25 2861 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  JEPS117643  Carex integra Lowell Ahart 2010-9-28 17271 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC7783  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC34168  Carex laeviculmis Lowell Ahart 1981-9-15 3171 Butte Swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC59006  Carex laeviculmis Lowell Ahart 1992-6-26 6783 Butte Bog like area, on the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC88156  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  RSA774128  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC52245  Carex nudata L. P. Janeway 1987-6-20 2274 Butte Along Fall River near the road to Cascade 3.0 mi north of the Feather Falls-Lumkin Ridge Rd. 1013 Comment
  SEINET7571067 Image available Carex pendula L. P. Janeway 2004-6-20 8137 Butte Chico 7.5' quad, Sacramento Valley. South end of Chico, along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC44950  Carex praegracilis L. P. Janeway 1988-7-2 2943 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC44992  Carex praegracilis S. C. Morey 1983-7-24 624 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC87219  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale. 32 Comment
  UC1108038  Carex serratodens H. F. Copeland 1932-7-24 Butte by small stream running from w into Butte Creek Meadows Comment
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  UC1609335  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC117019  Carex straminiformis V. Oswald; Lowell Ahart 1971-8-22 18423 Butte Ca 5 mi (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC55448  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-1 2915 Butte On the NE-facing flank of Snow Mountain, and above Summit Lake. 2011 Comment
  SEINET4292179 Image available Carex subfusca Unknown 2003-1 7821 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. Comment
  CAS-BOT-BC116732  Carex subfusca Lowell Ahart 1984-7-19 4751 Butte Ca. 1 1/2 mi SE of Bald Mountain, 1/4 mi E of Oak Point, ca 5 mi NE of Stirling City. 1500 Comment
  SEINET10946215  Carex subfusca Lawrence P. Janeway 1988-6-16 Janeway 2798 Butte T25N, R3E, Butt Meadows quad (15') SE1/4 of sec. 12. SE-facing slope above Butte Cr; along rd in W side of canyon, 3.7 mi S of Humboldt Rd. 1295 Comment
  HSC89352  Carex texensis L. P. Janeway 1989-6-1 3270 Butte CSU Chico campus, N side of Big Chico Creek, opposite Holt Hall 58 Comment
  CHSC44838  Carex whitneyi L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3077 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CDA13868  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC2026868  Carpenteria californica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC249118  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  POM15992  Castilleja affinis A. A. Heller, H. E. Brown 1902-5-6 5467 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC249592  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi; Richard Hauke; Geo. Bacigalupi, Jr. 1954-7-15 4723 Butte Along sides of Butte Canon [Canyon], on Nimshew [Humbug] Road, 0.5 mi. below Nimshew 701 Comment
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44355  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 a Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  SEINET10549335  Castilleja applegatei var. fragilis Mary Susan Taylor 1982-5-2 Taylor 4384 Butte 2300 ft. T22N R4E sec 13. Pulga SW quad. N side of Hwy 70, 4.2 mi w of Pulga bridge, ca. 19 air mi ne of Oroville. 701 Comment
  CHSC38710  Castilleja attenuata Vernon Oswald 1983-3-9 144 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Pard Rd. 0.5 mi e of the power lines. 213 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS124204  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte About 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. Comment
  JEPS124207  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-11 20030 Butte About 1 1/2 miles northeast of Honcut, about 1/2 miles east of Parlemo Honcut Highway, about 12 miles (air) south of Oroville. Comment
  CHSC24980  Castilleja exserta J. Cox 1976-3-10 38 Butte N Table Mt. Ca. 350 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville; 15 yds. above stream. 426 Comment
  CHSC43167  Castilleja exserta Douglas Rand 1978-4-12 17 Butte Ca. 2.5 mi se of Municipal Airport and 1 mi nw of Pleasant Valley High School. 60 Comment
  SD234176  Castilleja exserta Virginia Pinkus Ryder 1965-4-3 363 Butte Table Mtns. 381 Comment
  JEPS124166  Castilleja exserta subsp. exserta Lowell Ahart 2015-3-27 19972 Butte South of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC114983  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC2427  Castilleja lacera R. Carter 1965-6-15 233 Butte Found .5 mi. N of Derrick Rd. on Old Cherokee Rd. along W side of orad ca. 5' from edge of road, North Table Mountain ca 5 mi. of Oroville. 335 Comment
  CHSC97368  Castilleja lacera Paul Maslin 2005-5-1 47 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106096636E 4409708N. 268 Comment
  CAS-BOT-BC240977  Castilleja pilosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  SEINET7072993  Castilleja rubicundula subsp. lithospermoides A. G. Vestal 1963-5-30 s.n. Butte About 15 miles east of Forbestown on the Forebestown Road. UTM Zone 10, 650845mE, 4376263mN. Coordinate datum: NAD27). Comment
  POM43182  Castilleja subinclusa C. C. Bruce 1897-05 1939 Butte Little Chico. Comment
  CHSC11890  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Jonesville. In 'Scotch John' meadow. 1700 Comment
  UC886576  Castilleja tenuis A. A. Heller 1914-6-22 11509 Butte Chico meadows; Chico 1219 Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  CAS-BOT-BC48547  Ceanothus cordulatus H. F. Copeland 1920-7-7 38 Butte Jonesville 1219 Comment
  UCD123472  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 815 e Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1.0 road miles from Centerville Road on Bean Flat Road . 15.1 km 74 deg. (True) ENE of Chico. 243 Comment
  CAS-BOT-BC50784  Ceanothus integerrimus Jean L. Pawek 1956-5-21 52 Butte Highway Alternate 40 609 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC3277  Ceanothus integerrimus M. L. Hillier 1966-5-9 Butte In small open field along rd. side 6.8 miles n.e. of the Skyway on Humbug rd. Comment
  CHSC81549  Ceanothus integerrimus Julie Rose 2000-4-25 89 Butte 6.8 miles on Hwy 32 East to Green Gate. At the beginning of the trail. 365 Comment
  LA43611  Ceanothus integerrimus Carl B. Wolf; 1937-5-18 8726 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  RSA21540  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  SEINET12210559  Ceanothus integerrimus Unknown 1970-1 118 Butte ca 20 mi N of Oroville, on left side of Hwy. 70 Comment
  CHSC46507  Ceanothus integerrimus var. californicus Lowell Ahart 1980-9-10 2645 Butte Along the edge of the road, about 7 miles east of Milsap Bar, about 32 miles north-east of Oroville. 1097 Comment
  CHSC31410  Ceanothus lemmonii Leslie Steidl 1980-4-10 14 Butte Ca. 17 mi ne of Oroville, ca. 2 yd e of Lumpkin Rd and 10 yd n of Mc Cabe Creek. SW1/4 of NE1/4 of NE1/4 of SE1/4. 390 Comment
  CHSC42001  Ceanothus lemmonii Lowell Ahart 1973-4-15 202 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  SEINET10493646  Ceanothus lemmonii Heidi H. Schmidt 1993-6-15 Schmidt 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC52423  Ceanothus velutinus var. velutinus Anna Head 1921-7-11 s.n. Butte Indian Pk, Feather River Region Comment
  CDA38777  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. Comment
  SEINET10474147  Centaurea calcitrapa Mary Susan Taylor 1980-8-30 Taylor 3323 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  UC1609220 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38333  Centaurea melitensis Vernon Oswald 1983-5-30 574 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CAS-BOT-BC272091  Centaurea melitensis Lowell Ahart 1988-7-24 6129 Butte In logged over area, about 1/20 mile north-east of the intersection of Ponderosa Way adn Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  JEPS118664  Centaurea stoebe subsp. micranthos L. P. Janeway 2010-8-5 10136 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N48 (closed) about 300 m south of Milsap Bar Road; 1.1 km northwest of Middle Fork Feather River and 2.7 km southeast of Brush Creek (town). Comment
  CHSC651  Centaurium tenuiflorum R. Carter 1964-6-5 109 Butte 8 mi. E of Oroville at Woodleaf St. Rt. Box 6120, behind house. 121 Comment
  JEPS93821  Centaurium venustum Lowell Ahart 1998-7-1 8021 Butte about 7 air mi n of Oroville (nw of the Ione oak tree, about 1/8 mi nw of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CDA39703  Centaurium venustum L. Ahart 1998-6-3 7969 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM76323  Centaurium venustum C. C. Bruce 1897-06 2002 Butte Plains Comment
  JEPS104277  Centromadia fitchii Lowell Ahart 2003-8-4 10469 Butte Pastue fields, Peter Ahart Ranch, ca 1 1/2 mi n and 1 mi e of Honcut, ca 12 mi se of Oroville. 31 Comment
  SFV3982  Centromadia pungens M. L. Vincent 1960-9-8 53 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 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
  SEINET10971587  Cephalanthera austiniae Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4709 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC66677  Cephalanthus occidentalis var. californicus Vernon Oswald 1996-7-17 8061 Butte Sacramento River National Wildlife Refuge; Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  SEINET10500789  Cephalanthus occidentalis var. californicus Mary Susan Taylor 1980-8-30 Taylor 3324 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  JEPS119630  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  RSA715892  Cerastium glomeratum L. Ahart 2005-4-14 11715 -A Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC388261  Cerastium glomeratum Lowell Ahart 1980-4-19 2080 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC46613  Ceratophyllum demersum Vernon Oswald 1989-8-1 3910 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In Little Dry Creek at the bridge ca. 1 mi n of Gridley-Colusa Hwy. 18 Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  RSA405399  Cercis occidentalis M. M. Boney 1897-1 1897 Butte [No location data on label] Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  SEINET10543165  Cercocarpus betuloides Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7023 Butte 2.6 miles w of paradise on chico road 610 Comment
  CHSC3221  Chamaecyparis lawsoniana Virginia Hagaman 1966-3-5 47 Butte Lower Bidwell Park. Comment
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Jul 25 2018
  OBI59419  Chamaesyce hooveri R. D. Stone & R. E. Buck, R. E. Buck 1987-1 Butte Comment
  CHSC110407  Chamaesyce maculata Lowell Ahart 2012-9-28 18473 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC47429  Chamaesyce maculata Lowell Ahart 1984-8-19 4784 Butte North of the state borrow area, west on Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC76416  Chamaesyce maculata Lowell Ahart 1999-10-28 8309 Butte On the west side of a large pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles (air) southwest of Chico. 32 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
  UC765099  Chamaesyce ocellata R. F. Hoover 1938-8-2 3716 Butte 13 mi s Chico Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC51261  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  SEINET10479039  Chenopodium ambrosioides Mary Susan Taylor 1980-10-6 Taylor 3358 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  JEPS95916  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1999-8-22 8183 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
  JEPS103334  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 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
  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
  RSA726435  Chenopodium pumilio L. Ahart 2007-11-3 14566 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  SEINET10479079  Chenopodium pumilio Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4744 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
  CHSC109763  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. 67 Comment
  CHSC110403  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC30704  Chimaphila menziesii M. S. Taylor 1980-5-27 2658 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CAS-BOT-BC451372  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  SEINET10973487  Chimaphila menziesii Mary Susan Taylor 1978-9-9 Taylor 1907 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  UC203839  Chlorogalum angustifolium A. A. Heller 1914-5-14 11400 Butte near Clear Creek Comment
  CHSC39020  Chlorogalum pomeridianum var. pomeridianum J. D. Jokerst 1983-6-21 1818 Butte Top of North Table Mountain at north edge of Coal Cr Canyon. 304 Comment
  JEPS55718  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 822 Butte on Pentz Road ca 1/4 mi w Pentz Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  CHSC3367  Chrysolepis sempervirens M. Gregg 1966-4-23 105 Butte 2 miles south of Butte Meadows on Bull Run Rd. Along side of road. Comment
  CHSC26652  Cichorium intybus M. S. Taylor 1977-11-10 1528 Butte Ca. 1 mi E of jct of Nelson West Rd and Chico-Butte Hwy, on N side of Nelson West Rd, ca. 23 mi S of Chico. 30 Comment
  JEPS115881  Cichorium intybus Lowell Ahart 2009-6-19 15917 Butte On the north side of Ten Mile House Road, just east of the Guardians Trail, 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 381 Comment
  SEINET10474166  Cichorium intybus Mary Susan Taylor 1975-6-25 Taylor 795 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
  CHSC42576  Cicuta douglasii Vernon Oswald 1985-7-15 1901 Butte N. Fork of Feather R. at Cresta Rest Area on Hwy 70 0.3 mi s of Arch Rock Tunnel 457 Comment
  SEINET10475748  Cinnamomum camphora Mary Susan Taylor Taylor 453 Butte Campus of the California State University, Chico. 61 Comment
  CHSC40774  Circaea alpina subsp. pacifica Lowell Ahart 1985-7-9 5116 Butte Along Fall River, about 100 yards south of the bridge across Fall River. about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC44044  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-19 2232 Butte Along Sly Cr near crossing of road from the Challenge-LaPorte Rd 2.1 mi toward the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  SEINET5507043 Image available Cirsium andersonii H. F. Copeland 1924-8-11 n.s. Butte Jonesville 1524 Comment
  CHSC304  Cirsium occidentale var. venustum B. Richardson 1929-5-14 Butte Cohasset. 609 Comment
  CHSC39418  Cirsium occidentale var. venustum J. D. Jokerst 1984-5-24 2033 Butte West edge of Table Mountain (W edge of mesa) ca 1 mile south of Cherokee Road. 365 Comment
  SEINET10473714  Cirsium vulgare Mary Susan Taylor 1975-8-31 Taylor 878 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC438982  Cistanthe monosperma A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CAS-BOT-BC228754  Cistanthe umbellata E. B. Copeland 1930-6-28 s.n. Butte Jonesville; Scotch John 1750 Comment
  CHSC48623  Clarkia biloba subsp. brandegeeae Vernon Oswald 1985-5-28 1782 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. On the road cut. 304 Comment
  CAS-BOT-BC164133  Clarkia concinna Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CAS-BOT-BC27107  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  CHSC71152  Clarkia mildrediae subsp. lutescens L. P. Janeway; B. Castro 1994-7-8 4686 Butte 0.7 mi south of South Branch Middle Fork Feather River; 1 mi west-southwest of the mouth of Cascade Creek. Road cutbank. 1234 Comment
  CHSC39034  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 mi SE of Stirling City, on the west side of the West Branch of the Feather River. Along the edge of the dirt road. 1100 Comment
  RSA671128  Clarkia mildrediae subsp. mildrediae G. Fred Hrusa, T. D. Wilfred 1995-7-9 13169 Butte Approx. 1 m. on 22N89, immediately S of Rogers Cow Camp on Hwy 162. 1100 Comment
  UCD169420  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. 655 Comment
  RSA0004431  Clarkia mosquinii subsp. mosquinii T. Mosquin 1959-7-3 3335 Butte 3.7 miles southwest of entrance ot Plumas National Forest, along Hwy 40 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CHSC37425  Clarkia purpurea subsp. quadrivulnera R. A. Schlising; K. Tarp 1982-7-28 4360 Butte NE of Oroville and NW of Mountain House; along French Creek; in meadow. 609 Comment
  CAS-BOT-BC164780  Clarkia rhomboidea John Thomas Howell 1962-6-15 37470 Butte Magalia 731 Comment
  CAS-BOT-BC164781  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC26849  Clarkia rhomboidea M. S. Taylor; M. Hayes 1978-6-24 1642 Butte On n side of Old Humboldt Rd at jct of Butte Creek and Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC70756  Clarkia rhomboidea L. P. Janeway 1994-6-20 4670 Butte About 0.3 mi southwest of Oak Point; overlooking Big Kimshew Point. 1447 Comment
  JEPS87407  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1993-6-22 5554 Butte 2.1 mi n Doe Mill Rd. (Ponderosa Way) (Powellton Rd., n of De Sabla) 963 Comment
  UC1609083  Clarkia rhomboidea Lowell Ahart 1993-6-20 6980 Butte about 6 1/2 mi (air) ne Feather Falls (about 1 1/2 mi e Camp 18); Lumpkin Ridge 1219 Comment
  UCD104987  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  CHSC38568  Clarkia unguiculata Vernon Oswald 1983-5-21 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft w of the power lines. 213 Comment
  SEINET10572694  Claytonia parviflora Mary Susan Taylor 1981-5-5 Taylor 3619 Butte T20N R6E sw/ne sec 11. Forbestown quad. In shaded creek crossing 21N35Y, ca. 0.5 mi S of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  HSC72997  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, 100 ft. E of Lumpkin Rd., 2.5 mi. NE of its junction with Forbestown Rd., 18 mi. NE of Oroville 396 Comment
  POM102026  Claytonia parviflora subsp. parviflora C. C. Bruce 1897-06 2014 Butte Butte Creek Comment
  CAS-BOT-BC439773  Claytonia perfoliata Lowell Ahart 1984-6-10 4711 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC56760  Claytonia perfoliata Jan Monelo 1989-4-5 1 Butte At base of Pinus ponderosa and Umbellularia californica, 609 Elliott Rd, Paradise. 548 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CAS-BOT-BC443702  Claytonia rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CHSC116963  Clematis lasiantha Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  CHSC52816  Clematis ligusticifolia Robert Schlising; M. Banchero, R. Banchero 1979-10-13 3498 Butte Along Sacramento River w of Chico, at slough at end of Sacramento Avenue. 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
  SFV10460  Collinsia parviflora M. L. Vincent 1964-4-11 562 Butte Cherokee Road beside the Campbell Ranch. 0.5 miles south of Cherokee. Comment
  SFV3357  Collinsia sparsiflora M. L. Vincent 1962-4-16 196 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC103382  Collinsia sparsiflora var. collina Mrs. R. M. Austin April 1896 Butte Chico Comment
  JEPS6368  Collinsia tinctoria Rimo Bacigalupi & Richard Hauke 1954-7-15 4700 Butte 0.5 mi s and below Nimshew (along flank of Butte Canyon, on the Humbug (Nimshew) rd); Butte Canyon 701 Comment
  UC1594549  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte about 2 air mi n of Oroville (on n side of the dirt road, on n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  SEINET10548311  Collinsia tinctoria Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4249 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC34597  Collomia heterophylla R. A. Schlising; P. Broyles 1979-5-15 3405 Butte NW of Concow Reservoir at Griffin Gulch. Roadside. 640 Comment
  CHSC38590  Collomia heterophylla Vernon Oswald 1983-5-15 494 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion channel. 79 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
  POM65171  Collomia heterophylla Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC42552  Collomia tinctoria Lowell Ahart 1987-5-22 5673 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  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
  CHSC94493  Collomia tinctoria Lowell Ahart 2006-8-15 13190 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SBBG29160  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville 1500 Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  CHSC31656  Convolvulus arvensis L. Ahart 1978-7-15 1784 Butte Peter Ahart Ranch, Honcut. On dry bare soil near the garden. 50 Comment
  JEPS115666  Convolvulus arvensis Lowell Ahart 2009-5-30 15787 Butte About 50 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
  SEINET10474192  Conyza canadensis Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3396 Butte T20N R6E center sec 23. Forbestown quad S side of 20N53.2, ca. 1 mi SW of Feather Falls Community. Elevation ca. 2900 ft. 884 Comment
  CHSC30950  Cordylanthus pilosus subsp. trifidus L. Ahart 1980-7-4 2450 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  RSA505432  Cordylanthus tenuis subsp. tenuis R. C. Bacigalupi, Howard Whisler 1957-7-26 6045 Butte Butte Meadows. 1372 Comment
  CAS-BOT-BC211984  Cornus nuttallii Saichi Kawahara 1968-5-5 399 Butte Humboldt Road, 1 mile west of Bull Road 1432 Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  CHSC48307  Cornus sericea subsp. sericea Vernon Oswald 1987-6-23 3007 Butte Just w of the Skyway, 1.4 mi (odometer) s of Inskip. 1426 Comment
  CHSC92592  Cornus sessilis L. P. Janeway 2005-5-17 8392 Butte Northern High Sierra Nevada. Plumas National Forest; along unnamed creek 0.5 km west of Cedar Creek, 1.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  CHSC94162  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. 1113 Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  SEINET10836292  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC103167  Cotoneaster lacteus Lowell Ahart 2009-11-19 16562 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  JEPS120054  Cotoneaster lacteus Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17854 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  JEPS115259  Cotoneaster pannosus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  RSA0076091  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC103991  Crassula aquatica Lowell Ahart 2010-5-14 16648 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC28751  Crassula connata J. D. Jokerst 1979-3-18 174 Butte 200 met. N. W. of Hwy 32. 7.7 mi. E. of Chico, top of ridge. 365 Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC46742  Crassula tillaea Lowell Ahart 1974-4-7 340 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS118636  Crataegus monogyna L. P. Janeway 2011-6-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. Comment
  CAS-BOT-BC376469  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 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
  JEPS28122  Crucianella angustifolia John Thomas Howell 1962-6-16 37612 Butte w of Nelson Bar (Feather River West Branch); Sierra Nevada 304 Comment
  CHSC29038  Cryptantha affinis J. D. Jokerst 1979-7-3 276 Butte Edges of Jones Cr, N of the town of Jonesville. 1737 Comment
  UC1609327  Cryptantha affinis Lowell Ahart 1993-6-26 7018 Butte about 1 mi w Lost Creek Reservoir (e side of the dirt road) 1188 Comment
  UC857135  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  SBBG127995  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte S side of a poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  CHSC46753  Cryptantha flaccida Lowell Ahart 1984-5-19 4609 Butte On a small hill a little east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  JEPS118004  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  JEPS93843  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ion oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 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
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  SEINET10497605  Cryptantha hendersonii Lowell Ahart 1983-5-28 Ahart 4020 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  SEINET10497606  Cryptantha hendersonii Lowell Ahart 1984-6-8 Ahart 4677 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  UC708010  Cryptantha intermedia McKee and Westover 1918-6-5 7 Butte Paradise 609 Comment
  SEINET10497283  Cryptantha rostellata Lowell Ahart 1984-5-18 Ahart 4606 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
  UC333620  Cupressus lawsoniana Lemmon Butte Bidwell's Comment
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Jul 25 2018
  CHSC40347  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 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
  CHSC7190  Cupressus macnabiana F. Kimball 1969-4-23 67 Butte Roadsides of Coutolenc Rd. 0.3 mi n of Paradise-Stirling City Skyway, 0.5 mi n of Magalia. 762 Comment
  SEINET10966021  Cupressus macnabiana Mary Susan Taylor 1975-5-9 Taylor 568 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  CHSC3294  Cupressus macrocarpa M. L. Hillier 1966-3-6 Butte Chico City Cemetery next to school yard of Chico Jr. High School. Comment
  CAS-BOT-BC224423  Cuscuta californica Lowell Ahart 1983-9-19 4455 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  LA210099  Cuscuta californica E. B. Copeland; 1931-7-17 sn Butte Jonesville 502 Comment
  JEPS117283  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  JEPS47094  Cuscuta indecora A. A. Heller 1914-8-11 11677 Butte Chico Comment
  UCD126312  Cuscuta indecora var. indecora A. A. Heller 1914-8-11 11677 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  UC600775  Cuscuta subinclusa H. F. Copeland 1930-7-26 1323 Butte Jonesville, peak above hotel Jonesville 1676 Comment
  CHSC44464  Cyclospermum leptophyllum Lowell Ahart 1988-5-15 6003 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC30992  Cymopterus terebinthinus var. californicus M. S. Taylor; R. Schlising 1980-7-6 3073 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  JEPS124150  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC101321  Cynoglossum grande Lowell Ahart 2009-4-22 15570 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
  CHSC27949  Cynoglossum grande M. S. Taylor 1979-3-20 1943 Butte Ca. 1 mi n of jct of w br. Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 30 Comment
  CHSC78065  Cynoglossum grande Caleb E. Casey 1999-3-4 Butte Upper Bidwell park, below bluffs on south side over Bear Hole. 30 Comment
  CAS-BOT-BC190390  Cynosurus echinatus John Thomas Howell 1962-6-16 37603 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CDA38936  Cyperus acuminatus L. Ahart, Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC30503  Cyperus difformis J. D. Jokerst; M. S. Taylor 1979-11-1 634 Butte Field north of Goodspeed-Watt Road, 0.1 mi N of its jct with Nelson, ca 6.0 mi S of Chico. Comment
  CHSC45260  Cyperus difformis L. P. Janeway 1986-9-20 1879 Butte Gravel bar along east side of Sacramento River just SE of the Ord Ferry Rd bridge. 28 Comment
  CHSC37531  Cyperus eragrostis M. S. Taylor; L. Ahart 1982-10-11 5157 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CHSC84153  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the west side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  JEPS94723  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET9751966 Image available Cyperus eragrostis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  POM219490  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  RSA0028815  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  UCD141068  Cyperus eragrostis L. P. Janeway 1987-5-20 2087 Butte seep along Highway 70, 0.3 mile north of Arch Rock Tunnel. N fork Feather River. Granitics. 472 Comment
  CHSC43784  Cyperus erythrorhizos Vernon Oswald 1983-7-31 940 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  CHSC66856  Cyperus erythrorhizos Vernon H. Oswald 1996-9-30 8291 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. Margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  UC1100518  Cyperus erythrorhizos Herbert L. Mason 1945-9-19 12738 Butte Gray Lodge Game Refuge n.w. Pennington; Gray Lodge Game Refuge Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET13711402  Cyperus flavescens Lowell William Ahart, Lowell William Ahart 1999-1 8143 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET9084642  Cyperus flavescens L. Ahart 2000-8-23 8664 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road; ca 4 air miles SW of Oroville. 43 Comment
  CHSC111614  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Common. Agricultural. 31 Comment
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC68353  Cyperus niger L. P. Janeway 1986-10-19 1926 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC114063  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  UC1594703  Cyperus squarrosus Lowell Ahart 1992-7-21 6811 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC68041  Cystopteris fragilis K. D. Marsh 1974-4-30 4 Butte Honey Run Rd, ca. 11 mi e of Chico Comment
  SEINET10833641  Cystopteris fragilis Mary Susan Taylor 1981-5-13 Taylor 3694 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  RSA21490  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  JEPS117179  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  UC1137166  Danthonia unispicata August L. Hormay 1929-6-22 Butte Butte Meadows; w exposure Comment
  CHSC76402  Datisca glomerata Lowell Ahart; Vernon H. Oswald 1999-10-3 8289 Butte 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
  CHSC36297  Daucus carota 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
  SEINET10454791  Daucus carota Mary Susan Taylor 1982-8-16 Taylor 4986 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  CHSC117610  Delphinium hansenii subsp. hansenii L. P. Janeway 2016-5-5 11941 Butte Cascade Range Foothills. Along Humboldt Road 2.3 road-km northeast of Bruce Road; Chico 152 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  UC854270  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville Sierra Nevada 1676 Comment
  CHSC82594  Delphinium patens subsp. patens Samantha Mackey Hillaire 2002-3-18 306 Butte Table Mountain, on a cliff overlooking Beatson Hollow next to a waterfall. 359 Comment
  CAS-BOT-BC17016  Delphinium variegatum Lowell Ahart 1980-4-21 2094 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC3260  Delphinium variegatum Virginia Hagaman 1966-4-17 115 Butte 2.4 miles east of Chico State college. Field across road from golf course in Bidwell Park. Comment
  UCD95783  Delphinium variegatum D. Finley 1998-5-25 6 -2 Butte town of Oroville, Table Top Mountain, 7.4 road miles on Cherokee Rd. from Table Mountain Blvd. Intersection. 396 Comment
  SEINET12099655  Delphinium variegatum Unknown 5 s.n. Butte no further locality Comment
  CHSC52947  Delphinium variegatum subsp. variegatum B. Castro 1982-4-9 9 Butte On roadcut on s side of Hwy 70, ca. 5 mi from jct of Hwys 70 and 149, ca. 9 mi ne of Oroville. 146 Comment
  CAS-BOT-BC82872  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Near Magalia. Comment
  CHSC77436  Dendromecon rigida Laura Bogni 1997-4-5 25 Butte West side of Coutelec Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 670 Comment
  UC600596  Deschampsia cespitosa H. F. Copeland 1932-7-24 Butte Butte Creek Meadows Jonesville; , Butte Creek Meadows Comment
  SEINET10507361  Deschampsia cespitosa Mary Susan Taylor 1978-6-24 Taylor 1663 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC69120  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC192653  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC192661  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Between Durham and Nelson Comment
  SEINET10524190  Deschampsia danthonioides D. McClain 1969-4-18 McClain 44 Butte 400 yds. n. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 488 Comment
  SEINET10968134  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET11683958  Deschampsia danthonioides R. Banchero, Banchero, M. 1979-1 18 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  CAS-BOT-BC201750  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  UC398885  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC47611  Desmazeria rigida Lowell Ahart 1982-5-3 3406 Butte Along the sides of a wash, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  CHSC97324  Dianthus armeria subsp. armeria L. P. Janeway 2007-7-11 9115 Butte Northern High Sierra Nevada. Plumas National Forest; along the edge of Road 22N49 200 m south of 4 Mile Ridge Road and 35 m north of Oroville-Quincy Hwy (and 15 m lower). 991 Comment
  UC1126524  Dicentra formosa P. L. Johannsen 1936-6-17 931 Butte 0.5 mi s Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1341 Comment
  CHSC19645  Dicentra formosa subsp. formosa K. Stern 1966-4-1 Butte Chico. Comment
  UCD139228  Dichelostemma capitatum Richard Sannar 1982-3-16 24 Butte along State Route 70, 1 mile north of intersection with Palermo Road, south of Oroville. Comment
  CHSC30355  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1979-2-23 1134 Butte Top of North Table Mt., W edge of Mountain adjacent to the waterfall at the S branch of Coal Cr. Comment
  RSA333579  Dichelostemma lacuna-vernalis Craig Martz, Richard F. Sannar 1982-3-22 30 Butte East side of State Route 191 at intersection of Pentz Road. 300 Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  CAS-BOT-BC501094  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  POM215700  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor. Comment
  JEPS118007  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CAS-BOT-BC208972  Digitaria ischaemum John Thomas Howell 1961-9-22 36734 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC69736  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte About 20 yards north of the South Fork of the Feather River and on the west side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC97734  Digitaria sanguinalis Lowell Ahart 2007-11-3 14568 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
  UCD170261  Diospyros virginiana var. virginiana D. O. Burge 2016-10-22 2184 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CAS-BOT-BC150498  Diplacus grandiflorus Lowell Ahart 1983-7-29 4230 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC3304  Diplacus grandiflorus M. L. Hillier 1966-5-1 Butte Above rd. side. 7 miles from C.S.C. Admin. build. n.e. on Humbug Rd. Comment
  CHSC44749  Diplacus grandiflorus R. Banchero 1980-6-14 217 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  CHSC76971  Diplacus grandiflorus Margie Collins 1894-5-1 Butte Centerville. Comment
  CAS-BOT-BC153209  Diplacus kelloggii Gladys L. Smith 1976-4-1 s.n. Butte Table Mountain Comment
  CHSC34081  Diplacus kelloggii M. S. Taylor 1980-4-18 2501 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC61218  Diplacus kelloggii Vernon H. Oswald; Lowell Ahart 1993-3-24 5242 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CAS-BOT-BC153336  Diplacus layneae John Thomas Howell 1962-6-15 37533 Butte Magalia 731 Comment
  SEINET8393803  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte westslopes of the Sierra near Forest Ranch. 701 Comment
  CHSC38709  Diplacus tricolor Vernon Oswald 1983-4-20 357 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.) 85 Comment
  CHSC84284  Distichlis spicata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10223 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CHSC677  Distylium V. Holt 1961-3-10 Butte Growing on Bidwell grounds between a Crepe Myrtle and a palm near sidewalk to Arcadian Street. 57 Comment
  HSC102776  Dittrichia graveolens L. P. Janeway 2011-10-20 10778 Butte Sacramento Valley; South end of Chico, along west side of Hwy. 99; 0.6 km south of Skyway/East Park Ave., and 0.3 km south of Comanche Creek 66 Comment
  SEINET11991666  Dodecatheon clevelandii E. J. Baker 1984-1 1 Butte N side of Humboldt Rd.ca.10 yds N of Rd,.2 mi E of intersection with Stinson Canyon Rd and Bruce Rd 58 Comment
  CHSC3563  Dodecatheon clevelandii subsp. patulum R. D. Briggs 1966-3-21 39 Butte Along Durham-Pentz Rd., 5 miles SSE of downtown Chico and 1 mile west of hwy US 99E. 57 Comment
  CHSC1396  Dodecatheon hendersonii R. M. Staley 1953-8-6 Butte Rush Creek. Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC112927  Downingia cuspidata B. Castro; Tom Boullion 2011-4-21 1846 Butte Sacramento Valley. N side of Thermalito Forebay/Power calanl, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on northside of Oroville. 71 Comment
  UC725639  Downingia cuspidata A. A. Heller 1942-4-26 16436 Butte s of Oregon City road (summit of Table Mountain, a short distance s of the place where the road emerges from the timbered part); Table Mountain Comment
  UC766390  Downingia cuspidata R. F. Hoover 1938-4-24 3251 Butte 3 mi e Richvale Comment
  UC625530  Downingia cuspidata Frank W. Gould 1938-4-23 318 Butte a few mi n Gridley Comment
  CHSC33684  Downingia insignis L. Ahart 1981-5-16 2809 Butte Near rd on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  POM59144  Downingia ornatissima A. A. Heller, H. E. Brown 1902-5-14 5549 Butte Berry Canyon (near Clear Creek) Comment
  CHSC34537  Draba verna var. aestivalis R. E. Preston 1982-2-21 177 Butte N facing slope of small side branch of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 243 Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS104415  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, ca 2 1/2 miles (air) east of the Brush Creek Work Center, ca 17 miles (air) northeast of Oroville. 1036 Comment
  CHSC108716  Drosera rotundifolia B. Castro; L. P. Janeway 2002-7-7 1377 Butte High Cascade Range. Soggy sedge-dominated meadow ... Field redacted by CHSC, contact the data manager for more information 170 Comment
  CHSC101753  Drymocallis glandulosa var. glandulosa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC109669  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC159640  Drymocallis glandulosa var. glandulosa M. S. Taylor 1982-5-2 4393 Butte Pulga serpentine, N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CAS-BOT-BC157791  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  CHSC25451  Dysphania ambrosioides Hayes; Warner 1977-9-12 98 Butte Growing in flowerbed beside the Agriculture rainshed near the Clear Creek. On the Butte College Campus at the intersection of Clark and Pentz Roads, approx. 15 mi sse of Chico. 85 Comment
  CHSC47403  Dysphania ambrosioides Lowell Ahart 1989-11-12 6404 Butte In a disturbed area near a small pond, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  UCSB64004  Dysphania ambrosioides Ahart, Lowell 1981-11-6 Butte A little west of the Gray Lodge Waterfowl Management Area Headquarters, about 3/4 mile west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  CHSC112198  Dysphania botrys Lowell Ahart 2013-4-20 18561 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC62447  Dysphania botrys L. P. Janeway 1993-9-3 4581 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  JEPS114772  Echinochloa colona Lowell Ahart 2008-7-23 15148 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC40910  Echinochloa crus-galli Lowell Ahart 1985-11-7 5240 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  JEPS124347  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  SBBG126093  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  SD122513  Echinochloa crus-galli Lowel Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, circa 2.3 miles North and 0.3 miles East of Honcut, circa 12 iles South of Oroville 49 Comment
  SEINET231760 Image available Echinochloa crus-galli L. Arhart 1984-9-17 4792 B Butte Peter Arhart Ranch ca. 2.3 mi N and 0.3 mi E of Honcut ca. 12 mi S of Oroville 50 Comment
  SEINET10509298  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  UCD137945  Echinodorus berteroi L. Ahart 1975-6-20 798 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC104030  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte About 1 mi. NW of Biggs, ~ 500 yds. W of Riceton Highway, on the south side of Biggs Princeton Rd. 27 Comment
  CAS-BOT-BC291136  Eclipta prostrata Lowell Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, Honcut 50 Comment
  SBBG126094  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  JEPS123910  Elatine Lowell Ahart 2015-4-24 20074 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  JEPS127222  Elatine Lowell Ahart 2016-8-5 21259 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 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
  CHSC82217  Elatine chilensis Lowell Ahart 2002-4-22 9524 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC65778  Elatine heterandra Vernon H. Oswald 1996-4-10 7354 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CAS-BOT-BC113454  Eleocharis bella Lowell Ahart 1981-8-15 3030 Butte Ca. 1.5 miles S of Snag Lake (ca. 3 mi S of Jonesville). 1726 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CAS-BOT-BC113367  Eleocharis engelmannii Beecher Crampton 1957-9-17 4623 Butte Biggs Rice Experiment Station, 5 mi NW of Biggs. Comment
  JEPS98604  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of Pentz Magalia Road, ca 2 miles S of Paradise. 548 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
  JEPS98717  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte 13 mi SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  JEPS98597  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  HSC97764  Eleocharis parishii L. Ahart 2000-5-30 8409 Butte 1/4 mi. NE of Kunkle Reservoir, E of Pentz Magalia Rd., 2 mi. S of Paradise 549 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
  RSA365441  Eleocharis quinqueflora H. F. Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  SEINET3441890  Eleocharis suksdorfiana Unknown 2000-7-5 8552 Butte Stirling City, Stirling City, about 4.5 miles north, about 1 mile south of Inskip, about 100 yards west of the skyway 1310 Comment
  CAS-BOT-BC234109  Elymus multisetus John Thomas Howell 1962-6-15 37529 Butte Magalia, Sierra Nevada 731 Comment
  CHSC65412  Elytrigia intermedia subsp. intermedia Vernon Oswald 1988-6-30 3542 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. On the edge of the road. 1146 Comment
  JEPS119567  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  SEINET6635801 Image available Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte end of Nelson Bar Road, ca. 1 mi S on Kunkle Reservoir, ca. 3 mi S of Paradise; near boat ramp 302 Comment
  CHSC117412  Epilobium campestre B. Castro 2008-7-15 1757 Butte Sacramento Valley. 0.4 mi W of Hwy 99 and 2.5 mi E of Richvale, ca 300 ft S of Richvale Hwy. 34 Comment
  CHSC34717  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1978-7-19 1745 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. Near Butte Creek. 1524 Comment
  UC1562487  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along creek below high water line of Lake Oroville (about 1/2 mi sw of the Enterprise Bridge across lake); McCabe Creek 228 Comment
  UCSC000491  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1928-7-31 s.n. Butte in woods along Butte Creek - Jonesville 1372 Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 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
  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
  UC600548  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-7 Butte Butte Creek Jonesville 1500 Comment
  JEPS123820  Epilobium minutum Lowell Ahart 2015-4-18 20052 Butte About 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  UC873441  Epilobium minutum A. A. Heller 1914-6-22 11503 Butte edge of forest about Chico Meadows 1219 Comment
  POM46486  Epilobium minutum C. C. Bruce 1897-06 s.n. Butte Butte Creek Comment
  CHSC95134  Epilobium pygmaeum Lowell Ahart 2006-11-12 13543 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC46383  Epilobium torreyi Lowell Ahart 1989-5-23 6232 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. 76 Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  CHSC21043  Equisetum hyemale subsp. affine M. S. Taylor 1975-10-4 965 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CAS-BOT-BC204455  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  JEPS120091  Eragrostis curvula Lowell Ahart 2012-6-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. Comment
  CHSC49243  Eragrostis pectinacea var. pectinacea Vernon Oswald 1987-5-26 2933 Butte Bancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET10864765  Eragrostis pilosa A. Arthur Heller 1914-8-20 Heller 11688 Butte Plentiful in a young olive orchard 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC41481  Eremogone cliftonii L. P. Janeway; Randy Harrison, Gary Benson 1984-9-10 Butte Plumas National Forest. Vicinity: N Fk Feather River near Mayaro. On northwest side and above the river. Along long sharp switchback in county rd 66553. 762 Comment
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  CHSC78628  Eremogone cliftonii L. P. Janeway; B. Castro 2000-5-28 6745 Butte Northern High Sierra Nevada. South side of Hwy 70 on the south side of the canyon of North Fork Feather River; 100 m west of the western driveway to Cresta Powerhouse. 455 Comment
  CAS-BOT-BC168362  Eremogone ferrisiae Lowell Ahart 1980-5-29 2362 Butte 2 1/2 miles north-east of Mountain House 1100 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
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CDA14082  Erigeron annuus G. F. Hrusa, T. D. Wilfred 1997-7-3 13966 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC37078  Erigeron bonariensis L. Ahart 1982-9-9 3771 Butte Ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC110404  Erigeron canadensis Lowell Ahart 2012-9-28 18456 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC38340  Erigeron canadensis Vernon Oswald 1983-9-10 1038 Butte Upper Bidwell Park, Chico, about 300 ft w of Day Camp. 91 Comment
  CAS-BOT-BC300618  Erigeron foliosus var. hartwegii Lowell Ahart 1980-5-12 2252 Butte Peter Ahart Ranch, Honcut 50 Comment
  UC600738  Erigeron glacialis var. glacialis H. F. Copeland 1932-8-22 Butte spring on ridge se of the head of Butte Creek; Jonesville 2100 Comment
  JEPS100228  Erigeron petrophilus var. sierrensis Dean W. Taylor 2002-7-3 18216 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  UC1730265  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft SW of the Gap 1280 Comment
  JEPS106152  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CAS-BOT-BC216043  Eriodictyon californicum Mrs. J. H. Morrison 1932-4-20 s.n. Butte Durham Comment
  CAS-BOT-BC216052  Eriodictyon californicum John Thomas Howell 1955-6-14 30457 Butte Magalia 731 Comment
  SEINET940363 Image available Eriogonum eremicum E. B. Copeland 1930-1 Butte Above Jonesville 2000 Comment
  SEINET5333742  Eriogonum luteolum R. R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC263201  Eriogonum marifolium var. marifolium H. F. Copeland 1920-7-11 72 Butte Scotch John Meadows 1828 Comment
  RSA781347  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Humboldt road. Comment
  CAS-BOT-BC261715  Eriogonum nudum var. oblongifolium John Thomas Howell 1976-7-14 51815 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  POM306151  Eriogonum nudum var. oblongifolium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CHSC11923  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. Along Butte Creek. 1500 Comment
  CAS-BOT-BC269846  Eriogonum nudum var. pubiflorum John Thomas Howell 1959-9-19 34614 Butte 2 miles west of Oroville 45 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
  CHSC30075  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-14 3910 Butte Near Philbrook Reservoir, 2.4 mi E of junction with Skyway, on Philbrook Road. Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  CHSC94921  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of North Fork Feather River along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentine outcrop road cut bank; southeast-facing. 579 Comment
  JEPS113301  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-8-9 8836 Butte Northern High Sierra Nevada. Plumas National Forest; along the northwest edge of Mooreville Ridge 9.6 air km west-soutwest of La Porte. Comment
  CHSC45481  Eriogonum ursinum var. ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak. 2133 Comment
  CHSC98660  Eriogonum ursinum var. ursinum B. Castro; L. P. Janeway 2005-8-8 1513 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. E-facing upper edge of knoll on rocky serpentine ridge within patchy lower Mixed Conifer forest. 1021 Comment
  SFV3893  Eriophyllum lanatum B. Fuller 1962-5-5 s. n. Butte Sierra Nevada Paradise. At the intersection of Harrison and Stearns Roads. Beside road on rocky slope. 535 Comment
  UC171430  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte near Stirling 1074 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
  CAS-BOT-BC308148  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile southeast of Lumpkin Ridge Road about 1 1/2 miles east of Camp 18 about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC308169  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CAS-BOT-BC308171  Eriophyllum lanatum var. grandiflorum A. A. Heller 1913-5-28 10763 Butte 8 miles north of Oroville, Table Mountain 182 Comment
  POM66629  Eriophyllum lanatum var. grandiflorum Edward Palmer 1892-6-7 2049 Butte Near Chico. Comment
  CDA42858  Erodium brachycarpum L. Ahart 2012-5-1 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CDA5616  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  SEINET10495135  Erodium obtusiplicatum Mary Susan Taylor 1975-2-16 Taylor 374 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC25463  Erysimum capitatum var. capitatum Hayes; Warner 1977-7-11 96 Butte Near Humboldt Summit (near Butte-Tehama county line), ca. 200 m down Pacific Crest Trail from the summit towards Humboldt Peak. 2011 Comment
  CHSC60968  Erysimum capitatum var. capitatum Lowell Ahart 1993-7-6 7058 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC1750  Erythranthe bicolor M. Underhill 1952-6-30 Butte Comment
  CAS-BOT-BC153575  Erythranthe floribunda Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC43538  Erythranthe geniculata Lowell Ahart 1978-5-2 1708 Butte North of the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 396 Comment
  CHSC110631  Erythranthe glaucescens Christopher T. Ivey; Jenn Coughlan 2013-5-17 383 Butte Centerville Rd. about 1 km N of Honey Run bridge. Roadside ditch on W side of road. 115 Comment
  CHSC24153  Erythranthe glaucescens B. Bunge 1976-4-20 16 Butte Ca. 100 yd s of Skyway, ca 5 mi ese of Chico. 213 Comment
  CHSC10851  Erythranthe guttata Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45091  Erythranthe lewisii L. P. Janeway; R. A. Schlising 1988-7-22 3059 Butte Southeast part of upper Coon Hollow. 1889 Comment
  CHSC3370  Erythranthe nasuta Robert L. Smith 1966-3-1 45 Butte Upper Bidwell Park. 7 miles NE of Chico. Comment
  CHSC44674  Erythranthe nasuta R. Banchero 1980-4-26 136 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, 0.1 mi SW of the town of Cohasset. 451 Comment
  CHSC105539  Erythranthe primuloides Lowell Ahart 2010-9-28 17255 Butte On damp black soil, about 10 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC44757  Erythranthe primuloides R. Banchero 1980-6-16 234 Butte Chico Meadows, 0.95 mi N of the jct of Humbolt Rd and the Skyway. 1316 Comment
  SEINET10469668  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3460 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  SEINET10469670  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3422 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CHSC10602  Erythronium multiscapideum Lowell Ahart 1968-3-17 Butte Bidwell Park. 91 Comment
  CHSC24787  Erythronium multiscapideum C. E. Stopher 1976-3-20 9 Butte 1.6 km nw of Forest Ranch. 610 Comment
  CHSC32641  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3457 Butte N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  CHSC32644  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3474 A Butte W side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. 701 Comment
  CHSC59369  Erythronium multiscapideum J. L. Guardino 1992-3-23 2 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  CHSC9284  Erythronium multiscapideum D. C. Burns 1971-4-2 110 Butte Abundant along s side of Cohasset rd., ca. 2.8 mi w of intersection of Cohasset rd. and Vilas rd. 457 Comment
  CAS-BOT-BC504530  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Peter Ahart Ranch, Honcut, near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  SEINET10528912  Erythronium multiscapideum Nelson 1979-4-24 NELSON s.n. 1979 Butte Population at vicinity of intersection of Coutelene Rd. and Skyway, 0.25 mi n of Magalia. Soil Serpentine. 3000 feet. 915 Comment
  UCD139646  Erythronium multiscapideum Susan Wagener 1955-4-23 33 Butte between spillway and highway; Magalia Dam. Comment
  CHSC1190  Eschscholzia caespitosa V. Holt 1935-5-15 Butte Salmon on Chico creek. 152 Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  CHSC90179  Eschscholzia lobbii Michael J. McNairn 1989-4-17 7 Butte Ca. 100 yds. ne jct. Lupin Ave. and Ceres Ave. ne Chico. 76 Comment
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  UC176651  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte near Big Chico Creek (e of Chico) Comment
  CHSC101811  Eucalyptus camaldulensis Lowell Ahart 2009-6-12 15843 Butte On the east side of the deer pen, about 50 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. On roadside banks. 822 Comment
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  CHSC68299  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte West of the ditch for the Old Honcut Flume, west of North Honcut Creek, about 2 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CHSC26621  Euthamia occidentalis M. P. Hayes 1977-9-24 119 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). Along edge of road. 30 Comment
  CHSC37087  Euthamia occidentalis L. Ahart; M. S. Taylor 1982-10-11 3860 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC27705  Festuca californica Robert A. Schlising; Coleta Lawler 1978-5-27 3280 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. Rr and Coutelenc Road. Comment
  CHSC49699  Festuca californica Vernon Oswald 1987-4-14 2325 Butte Butte Creek Trail ca. 0.4 mi s of the trailhead located near the bridge over Butte Creek nne of De Sabla. 609 Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  CHSC50389  Festuca elmeri Vernon Oswald 1990-6-1 4273 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. On slopes along trail. 579 Comment
  UC1562328  Festuca elmeri Vernon Oswald and Lowell Ahart 1990-6-27 4325 Butte ca 0.5 mi (air) ne Junction House (site) (Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, e side of Oro-Quincy Hwy) 1109 Comment
  SEINET10508610  Festuca grayi Lowell Ahart 1985-5-15 Ahart 4969 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
  CHSC116989  Festuca microstachys var. pauciflora Lowell Ahart 2016-6-4 20935 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 mile (air) northwest of Forbestown. 732 Comment
  CHSC49547  Festuca occidentalis Vernon Oswald 1987-6-2 2946 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. Along a trail in forest. 883 Comment
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook, Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  CAS-BOT-BC278631  Festuca subulata Lowell Ahart 1988-7-31 6148 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  CHSC42521  Festuca subulata Lowell Ahart 1987-5-9 5595 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  SEINET10474662  Filago californica Mary Susan Taylor 1980-5-27 Taylor 2661 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10474659  Filago californica Mary Susan Taylor 1980-5-31 Taylor 2767 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
  UCD13180  Fragaria vesca A. C. Myers 1996-4-25 41 Butte Butte Co. 20 mi NE of Oroville, along Rd. B-1, on Feather Falls trail, ca. 1 mi from trailhead. Ca. 2000 ft. Comment
  HSC104024  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Southwestern spur of Rocky Ridge, 0.6 air km. south of Batchelor Point; along Forest Service Rd. 23N06E, 0.8 km SE of Rim Road/Ponderosa Way. 895 Comment
  UCD121432  Frasera albicaulis var. nitida L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC29098  Fraxinus dipetala M. S. Taylor; J. D. Jokerst 1980-4-18 2522 Butte On dry bluff, on e side side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  CHSC99556  Fraxinus dipetala L. P. Janeway 2008-5-26 9370 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  SEINET13943085 Image available Fraxinus dipetala A. A. Heller 1915-1 11815 Butte Hills 14 mi NE of Chico near Rock Creek Comment
  CHSC3569  Fritillaria affinis R. D. Briggs 1966-2-22 48 Butte Salmon Hole,' 4 miles above the Bidwell Park golf course, Chico. 106 Comment
  CHSC4173  Fritillaria eastwoodiae D. B. Joley 1967-4-10 19 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  CAS-BOT-BC505287  Fritillaria micrantha Vesta Holt 1931-3-9 s.n. Butte Chico Comment
  POM225409  Fritillaria recurva Anonymous, Flower Show 1929-04 Butte [no additional locality information] Comment
  RSA32885  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte Near Stirling Comment
  SEINET10469524  Fritillaria recurva Mary Susan Taylor 1981-4-8 Taylor 3506 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC46404  Galium aparine Lowell Ahart 1989-5-28 6295 Butte South of Oregon Gulch road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC54164  Galium aparine Lowell Ahart 1991-4-19 6646 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  JEPS98370  Galium aparine Lowell Ahart 2000-6-29 8534 Butte 5 air miles E of Magalia (Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC3155  Galium asperrimum Dona Kingsford 1966-4-30 Butte 1.3 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  UC1564809  Galium bifolium V. Oswald and L. Ahart 1989-7-12 3849 .5 Butte road between Jones Meadow Lotts Lake (ca 3 air mi se of Philbrook Reservoir) 1901 Comment
  CHSC93496  Galium murale Lowell Ahart 2006-5-8 12598 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  CHSC111972  Galium parisiense Lowell Ahart 2012-6-2 18144 Butte South edge of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC29629  Galium parisiense J. D. Jokerst 1980-5-28 805 Butte Table Mt. Top of North Table Mt, sides of Cherokee Rd ca 1/2 mi W of the edge of the Mt. Comment
  CHSC40370  Galium parisiense Lowell Ahart 1985-6-17 5062 Butte 100 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  UCD80735  Galium parisiense CNPS SN Foothill Team 2005-5-26 SNNR 0203 c Butte City of Chico, Upper Bidwell Park, near the intersection of 10 Mile House Road and Guardian Trail. The stand runs parallel to the Guardian Trail, which runs through part of the stand. 427 Comment
  CHSC51912  Galium porrigens var. tenue Sally A. Carter 1988-4-24 Butte South side of Little Chico Cr, ca 8.8 mi ESE of Chico, ca 50 ft W of Honey Run Rd. Comment
  JEPS26674  Galium porrigens var. tenue P. C. Hutchison 1961-6-9 2093 Butte 7 mi s Jarbos Gap (along US Alt. 40); canyon of the north fork of the Feather River Comment
  CHSC48886  Galium sparsiflorum subsp. glabrius Vernon Oswald; M. S. Taylor 1985-5-30 1793 Butte Rim Rd. (Ponderosa Way) 2.7 mi N of Jarbo Gap. 853 Comment
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC61011  Galium trifidum var. pacificum Lowell Ahart 1993-6-26 7017 Butte Near center, section 24. North of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CDA43422  Garrya D. G. Kelch 2012-9-19 12 .361 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  SEINET10453484  Garrya fremontii Mary Susan Taylor 1980-4-18 Taylor 2530 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CAS-BOT-BC278702  Gastridium ventricosum Lowell Ahart 1980-5-25 2344 Butte Along Ponderosa Way 500 Comment
  UC1563295  Gaultheria ovatifolia V. Oswald, L. Ahart, and L. Hanson 1990-8-14 4440 Butte 0.75 mi w of n end of Sly Creek Reservoir (French Creek on the n side of Forest Road 21N16); French Creek, Forest Road 21N16 1219 Comment
  CHSC108757  Gaura L. P. Janeway; B. Castro 2011-6-5 10361 Butte Sacramento Valley. No sections here (Arroyo Chico) Chico; northeast side of Hwy 99 just southeast of Cohasset Road overcrossing. Generally planted areas bordering the roadway. 62 Comment
  SBBG119859  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte ca. 100 yards NE of the buildings in Butte Crk House Meadow, ca. 3 mi NE of Snag Lake, ca. 7 mi (air) E of Butte Meadows 1771 Comment
  RSA718070  Gayophytum heterozygum L. Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CHSC51884  Gentianopsis simplex L. P. Janeway 1988-7-29 3120 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  JEPS119759  Geranium carolinianum Lowell Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC90960  Geranium dissectum Lowell Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC50048  Geranium molle Lowell Ahart 1990-4-8 6435 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC7107  Geranium molle James M. Watson 1969-4-4 7 Butte 2.1 mi e of Keefer Road and Cohasset Highway on s edge of Cohasset Highway. 182 Comment
  UC392206  Geum macrophyllum E. B. Copeland 1929-7-25 Butte Jonesville 1500 Comment
  JEPS108861  Gilia capitata subsp. mediomontana Lowell Ahart 2006-5-19 12637 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  RSA699525  Gilia capitata subsp. pedemontana R. D. Fischer 2004-4-20 0126 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Patch located approx. midway along Humboldt Trail 427 Comment
  CHSC90052  Gilia tricolor Peggy Fain 1991-4-21 20 Butte Ca. 2 km. E. of Richardson Springs Hotel, Musty Buck Preserve. 213 Comment
  CHSC100984  Gilia tricolor subsp. tricolor L. P. Janeway 2008-4-2 9245 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 178 Comment
  CHSC62541  Githopsis specularioides B. Castro 1993-6-3 464 b Butte Ca 2.5 mi NE of Concow Lake, ca 30 ft E of large bend in Concow Road, 883 Comment
  CHSC90983  Githopsis specularioides Lowell Ahart 2005-5-11 11799 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC55463  Glyceria declinata L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. In vernal pool. 38 Comment
  CHSC29291  Gnaphalium palustre R. A. Schlising 1980-5-26 3602 Butte Several mi sw village of Cohasset, e of Cohasset Road. 472 Comment
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  CHSC25448  Goodyera oblongifolia Hayes; Warner 1977-9-11 75 Butte Ca. 100 m n of road between Jonesville and Butte Meadows, exactly 8.4 mi from the junction of the Butte Meadows road with Hwy 32. 1219 Comment
  UC1586523  Goodyera oblongifolia Lowell Ahart 1991-9-19 6728 Butte about 2 mi nw of Four Trees (about 2 mi w of Croville-Quincy Highway, about 2 mi ne of Coyote Gap, near where 2 branches of Wildcat Creek come together); Wildcat Creek 1219 Comment
  CHSC23381  Grevillea banksii 1966-3-31 Butte Comment
  CAS-BOT-BC305283  Grindelia hirsutula Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CDA13734  Grindelia hirsutula var. davyi G. F. Hrusa, T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC37648  Grindelia hirsutula var. davyi T. B. Devine 1981-8-25 749 Butte Along Durham-Pentz Road, at its junction with Pentz-Magalia Hwy. 205 Comment
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  UC480668  Hackelia californica H. F. Copeland 1929-6-11 1235 Butte Jonesville 1524 Comment
  CHSC47987  Hackelia micrantha Vernon Oswald; Lowell Ahart 1987-7-1 3078 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Near a streamlet entering the large lake. 1935 Comment
  CHSC42825  Hastingsia alba L. P. Janeway 1987-6-11 2184 Butte 3.0 mi south of Big Bar Mtn via road. 1021 Comment
  RSA69248  Hastingsia alba Frank W. Peirson 1926-6-21 6776 Butte Butte Meadow, Humboldt Road. Comment
  CHSC35665  Hedypnois cretica R. E. Preston 1982-4-22 253 Butte Ca. 1/2 mi ne of Line Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  CHSC37827  Hedypnois cretica R. A. Schlising 1980-5-23 3595 Butte N of Lake Oroville, along Nelson Bar Road, 1.0 mi w of jct with Lunt Road, and 1.8 mi total w of jct Lunt Road and Highway 70. Pasture. Comment
  CHSC11824  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Swamp, Jonesville. 1500 Comment
  CHSC89488  Helenium puberulum R. D. Fischer 2004-8-24 440 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property. At edge of road in drainage ditch. 216 Comment
  CHSC35991  Helianthella californica var. nevadensis J. D. Jokerst 1982-5-8 1567 Butte N of Forbestown along Ponderosa Way 3/10 mi. N of its jct with Lower Forbestown Rd. Comment
  CAS-BOT-BC105384  Heliotropium europaeum R. C. Wenk 2009-6-10 1115 B Butte Sacramento River National Wildlife Refuge. 1 air mile SE of where highway 32 crosses the Sacramento River 41 Comment
  CHSC100479  Heliotropium europaeum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  UCD77751  Heliotropium europaeum Robert E. Preston 1996-4-30 933 Butte 4.5 mi n of Hamilton City, on e side of Sacramento River 44 Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  HSC72952  Hemizonia congesta subsp. luzulifolia M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi. N of Oroville, on W side of Cherokee Rd., on SE slope of S Table Mtn. 244 Comment
  UCR219268  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15585 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  RSA505367  Hemizonia fitchii R. C. Bacigalupi, G. Thomas Robbins 1955-7-15 5301 Butte 3.5 miles E of Chico and 0.5 mile S of the Hooker Oak. 81 Comment
  SEINET10474721  Hemizonia parryi subsp. rudis Mary Susan Taylor 1982-4-28 Taylor 4345 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10938048  Hemizonia parryi subsp. rudis Lowell Ahart 1983-9-19 Ahart 4456 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC48255  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1987-4-16 2331 Butte Butte Creek Preserve on the n side of Butte Creek e of the Skyway. On a flood plain of the creek. 74 Comment
  CHSC45669  Hesperevax caulescens Vernon Oswald 1986-5-6 2000 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Along the fence line of a grazed pasture. 48 Comment
  SEINET11842157  Hesperevax caulescens Unknown 1979-1 17 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Road 56 Comment
  CAS-BOT-BC310189  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. Near North Honcut Creek 100 Comment
  SFV288  Hesperocyparis macnabiana M. L. Vincent 1961-3-27 14 Butte Sierra Nevada One mile north of Magalia on rocky bluff. 915 Comment
  SEINET10469503  Heteranthera limosa Lowell Ahart 1991-7-21 Ahart 6669 Butte About 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  UC2062461  Heteranthera limosa Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16444 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  CHSC113493  Heterocodon rariflorum Lowell Ahart 2014-7-10 19630 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC96245  Heterocodon rariflorum R. Fischer 2006-5-27 995 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  POM59067  Heterocodon rariflorum Kate Konger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10460731  Heterocodon rariflorum Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, about 3 miles east of Lake Madrone 998 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  CHSC3603  Heteromeles arbutifolia Gerry Carrauthers 1966-2-28 23 Butte Ca. 10 mi N.E. of Chico at end of dirt road beyond Bidwell Golf Course ca. 5 mi. Comment
  CHSC23693  Heterotheca grandiflora M. S. Taylor 1976-5-5 1106 Butte On w side of Pentz-Magalia Rd, ca. 50 ft s of junc of Pentz-Magalia Rd and Pentz Rd, ca. 15 mi s of Chico. 121 Comment
  CHSC6159  Heterotheca grandiflora J. Wheeler 1968-2-15 281 Butte Southern Pacific Railroad embankment at Coal Canyon. 228 Comment
  JEPS121890  Heterotheca grandiflora Lowell Ahart 2014-11-17 19912 Butte Just below the high water line of Lake Oroville, about 150 yards southwest of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. Comment
  CHSC26706  Heterotheca oregona var. compacta Hayes; Schlising 1977-10-23 144 Butte In Lindo Channel ca. 180 m w of its intersection with Mangrove Avenue. 35 Comment
  JEPS103333  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CHSC26676  Hibiscus lasiocarpos var. occidentalis M. S. Taylor; M. Hayes 1977-8-16 1441 Butte In small area on Clear Creek between the Organic garden and the man-made ponds, on Butte College Campus, ca. 15 mi s of Chico. 60 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
  CAS-BOT-BC55332  Hirschfeldia incana Lowell Ahart 1984-6-10 4689 Butte Along the edge of a new subdivision road about 1 mile southeast of Hurleton, 1/12 mile east of the Oak Grove Cemetery. 500 Comment
  JEPS110329  Holcus lanatus Lowell Ahart 2006-7-25 13056 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC311880  Holozonia filipes Bruce G. Baldwin; Lowell Ahart; Gerald Carr 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch Comment
  CHSC61539  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte Along the Cherokee Canal, near bridge of Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CHSC71214  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte About 3/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 388 Comment
  HSC92444  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 12 mi. SW of Gridley 30 Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  CHSC23677  Horkelia tridentata M. S. Taylor 1976-4-24 1067 Butte Ca. 5 ft e of Oroville-Quincy Hwy, ca. 4 mi ne of Lake Madrone, ca. 13 mi ne of Oroville. Comment
  CHSC99565  Horkelia tridentata subsp. tridentata L. P. Janeway 2008-5-26 9387 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  JEPS113241  Horkelia tridentata subsp. tridentata Lowell Ahart 2007-5-22 13904 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC537883  Horkelia tridentata var. flavescens F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC41450  Hosackia incana Lowell Ahart 1986-7-2 5343 Butte Along the edge of a dirt road, about 1/2 mile south of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1706 Comment
  CHSC45283  Hosackia incana Vernon Oswald 1987-6-29 3040 Butte Bald Mt., 0.4 mi s of the Lookout. 1706 Comment
  CHSC885  Hosackia pinnata L. Nelson 1935-5-25 Butte Cohasset. 609 Comment
  CHSC116340  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 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
  CHSC78511  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC400825  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  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
  CHSC104748  Hypericum concinnum L. P. Janeway 2010-6-19 10023 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CDA13831  Hypericum perforatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13559 Butte Butte Basin; 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  JEPS121992  Hypericum scouleri Lowell Ahart 2014-7-13 19661 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC312930  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CAS-BOT-BC133567  Iris hartwegii L. P. Janeway 1995-6-1 4768 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls 1054 Comment
  RSA565165  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte ca. 15 miles east of Chico at junction of Highway 32 and Sugar Pine Place 1000 Comment
  CHSC2201  Iris hartwegii subsp. hartwegii W. Reed 1939-5-1 Butte Paradise 548 Comment
  CHSC99636  Iris macrosiphon H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM 10 610006E 4406721N. 471 Comment
  CHSC49639  Iris tenuissima subsp. purdyiformis Vernon Oswald 1985-5-16 1761 Butte Humboldt Rd. to Butte Meadows, 2.0 mi ne of Hwy 32. 1371 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC30366  Isoetes nuttallii J. D. Jokerst 1979-3-20 1149 Butte Top of North Table Mt., ca. 0.5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC44626  Isoetes nuttallii Vernon H. Oswald 1987-4-22 2343 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, ne of Hwy 99. 67 Comment
  CHSC83900  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 Comment
  UCD135924  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte In Valley Grassland, just E of Chico, NE corner of jct of Notre Dame Blvd and the Skyway. 68 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  UC480847  Isopyrum occidentale Mrs. R. M. Austin May 1896 Butte Little Chico Canyon Comment
  JEPS119902  Juglans hindsii Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  RSA134790  Juglans hindsii Percy C. Everett, E. K. Balls 1959-10-20 23906 Butte Henshaw Ave., Chico. 59 Comment
  SBBG127962  Juglans hindsii L. Ahart 2009-8-3 16252 Butte N side of Ten Mile House Rd, Upper Bidwell Park, 3/8 mi SW of jct of Ten Mile House Rd and Hwy 32 379 Comment
  CAS-BOT-BC109891  Juncus Lowell Ahart 1982-6-1 3527 Butte Sierra Nevada. About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 750 Comment
  CHSC8228  Juncus B. Hamilton 1969-5-5 46 Butte Found near Big Chico Creek in back of Dining hall. Comment
  RSA325941  Juncus balticus subsp. ater L. Ahart 1984-5-6 4586 Butte Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 miles N and 3 miles E of Honcut; ca. 12 miles S of Oroville. 50 Comment
  JEPS113866  Juncus brachyphyllus Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  CHSC103697  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, 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. 350 Comment
  CHSC31840  Juncus bufonius var. bufonius Lowell Ahart 1973-5-24 223 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38917  Juncus bufonius var. bufonius Vernon Oswald 1983-6-7 646 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC99011  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14795 Butte Dry to damp granite soil, 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. 305 Comment
  JEPS110163  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UCD80375  Juncus bufonius var. bufonius CNPS SN Foothill Team 2005-3-31 SNFN 0073 b Butte CDFG North Table Mountain Wildlife Area, in the middle and eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  CHSC103694  Juncus capitatus Lowell Ahart 2010-5-14 16654 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC47542  Juncus capitatus Lowell Ahart 1980-5-13 2264 Butte An open pasture field, 1/2 mile south-west of Kunkle Reservoir, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 Comment
  CHSC55454  Juncus capitatus L. P. Janeway 1991-4-12 3893 Butte 1 1/4 mi east of Palermo-Honcut Road, ca 3 mi north of Honcut. 45 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  UC1594673  Juncus covillei var. obtusatus Lowell Ahart 1992-7-27 6863 Butte about 2 mi nw of Four Trees (about 2 mi ne of Coyote Gap, about 2 mi w of the Oroville-Quincy Highway, along Wildcat Creek); Wildcat Creek 1219 Comment
  CHSC116305  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC96936  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 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
  JEPS98525  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  UCD141451  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4.5 miles southwest of Oroville. 30 Comment
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS113833  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville 166 Comment
  JEPS113834  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  JEPS113850  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14289 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
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  JEPS114891  Juncus kelloggii Lowell Ahart 2008-5-30 14794 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  JEPS122156  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte South of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC47564  Juncus leiospermus var. ahartii Lowell Ahart 1978-3-26 1620 Butte On the bottom and sides of vernal pools, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC110139  Juncus leiospermus var. leiospermus Clare B. Hardham 1978-4-17 21566 Butte Lava Table Mountain. Comment
  CAS-BOT-BC110140  Juncus leiospermus var. leiospermus John Thomas Howell 1978-4-17 52836 Butte Sierra Nevada. Table Mountain. 381 Comment
  CHSC83955  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, about 20 yards south of a faint poor dirt road, pasture field, about 150 yards southwest of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 344 Comment
  RSA368146  Juncus mexicanus H. F. Copeland 1931-6-11 1514 Butte Jonesville, Butte Creek Meadows 1829 Comment
  POM183194  Juncus nevadensis H. F. Copeland 1930-7-27 1358 Butte Jonesville. Blueberry Meadow. 1524 Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 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
  RSA0119188  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC41298  Juncus orthophyllus S. C. Morey 1983-7-21 494 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS98491  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC31444  Juncus tenuis L. Ahart 1980-9-10 2637 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC80894  Juncus tenuis Lowell Ahart 2001-7-6 8885 Butte West of a large pond, large 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 Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA754814  Juncus tenuis L. Ahart 2009-6-19 15919 Butte About 60 yards NW of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  UC1562478  Juncus tenuis Vernon Oswald and Lowell Ahart 1990-5-26 4257 Butte s of Oroville (Pacific Heights Rd entrance, on the e side of the Feather River); Oroville Wildlife Area 32 Comment
  SBBG128889  Juncus tenuis L. Ahart 2008-7-23 15143 Butte N side of S Fork of Feather River, ca. 10 yards W of where Sucker Crk enters S Fork of Feather River, below the high water line of Lake Oroville, ca. 1/4 mi W of Ponderosa Dam 258 Comment
  CHSC28748  Juncus uncialis James D. Jokerst 1978-4-12 121 Butte Richvale Vernal Pools, 1/4 mi. S. of the intersection of Hwy 162 and Hwy 99, along and W. of the latter. Comment
  CHSC38692  Keckiella breviflora var. glabrisepala Vernon Oswald 1983-5-18 502 Butte Upper Bidwell Park, Chico, near Yahi Trail 100 ft w of Parking Area P (2.0 mi e of the power lines). 195 Comment
  CHSC69054  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  CHSC50687  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte Near the Forbestown Generator, on the south-east side of the Forbestown Reservoir. 487 Comment
  CHSC96358  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte Sacramento Valley. 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilataum, 282 Chico Rd, Oroville. Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  SEINET10473874  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4457 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC102823  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC31536  Lagophylla glandulosa L. Ahart 1979-5-20 1879 Butte On bottom of wash. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC341294  Lagophylla glandulosa Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  HSC38107  Lagophylla glandulosa Thomas W. Nelson, Jane P. Nelson 1976-5-9 2448 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  UC406896  Lagophylla glandulosa H. M. Hall 1914-8-1 9828 Butte near Bidwell's Bar ((Mt. Ida)); Foothills of Sierra Nevada Comment
  CHSC31888  Lamium amplexicaule L. Ahart 1973-4-15 201 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS107753  Lasthenia californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
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Jan 19 2011
  POM219389  Lasthenia californica H. F. Copeland 1929-4-4 1542 Butte Canyon of Chico Creek. Comment
  UCD80083  Lasthenia californica subsp. californica CNPS SN Foothill Team 2005-3-31 SNFN 0072 b Butte CDFG North Table Mountain Wildlife Area outside Oroville. Plot is ca. 1 mile west-southwest of turnout on tabletop, 1/4 mile northeast of a minor ravine. 310 Comment
  SEINET11804892  Lasthenia fremontii R. T. Retuta 1978-1 20 Butte ca 5 ft E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico 62 Comment
  SEINET11806710  Lasthenia fremontii Unknown 1984-1 12 Butte ca 12 mi NW of Chico at jct of Broyles Rd & Hwy 99, on W side of Hwy 99 61 Comment
  UCD133733  Lasthenia fremontii Sue Wagener 1955-4-24 51 Butte junction of U.S. Highway 99E and the Paradise Durham Road (around 2 miles southeast of Chico). Comment
  CHSC42085  Lasthenia glaberrima John E. Hunter 1986-4-12 49 Butte Vacant lot within City of Chico, ca. 45 m nw of the intersection of East Ave. an Ceanothus. 62 Comment
  CHSC83919  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  JEPS127072  Lathyrus angulatus Lowell Ahart 2016-5-30 20896 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC104801  Lathyrus latifolius Lowell Ahart 2010-6-12 16791 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico. 332 Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  SEINET5327336  Lathyrus sativus R. McKee 1916-5-9 40281 Butte Chico Introduction Garden Comment
  CHSC863  Lathyrus sulphureus A. Koopman 1929-4-16 Butte U.S. Plant Introduction Garden. 60 Comment
  CHSC100983  Lathyrus tingitanus L. P. Janeway 2008-4-2 9243 Butte Northern Sierra Nevada Foothills. Oroville; along high flat bank on east side of Feather River between Thermalito Diversion Dam and the Fish Barrier Dam. 65 Comment
  CHSC39303  Lathyrus tingitanus Lowell Ahart 1983-6-26 4127 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. The sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  HSC43118  Layia fremontii Maralyn O'Meara 1974-4-20 269 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  UC179640  Layia fremontii A. A. Heller 1914-3-28 11235 Butte 8 mi n Oroville Comment
  SBBG17071  Layia fremontii M. Vincent 1961-3-29 Butte Chico Rd, ca. 1 mi E of Chico Comment
  CHSC21068  Lemna minor M. S. Taylor 1975-10-3 949 Butte Between Sacramento River and River Rd, ca. 10 mi w of Chico. 36 Comment
  CDA39175  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley. 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
  CHSC116704  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-14 20823 Butte On the east side of North Honcut Creek, Peter Ahart Ranch,about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  SBBG126097  Leontodon saxatilis subsp. longirostris L. Ahart 2012-6-2 18131 Butte Truex Rd, W of intersection of Truex Rd and Trevor Rd, ca 1/8 mi NW of W Branch Bridge across Lake Oroville 286 Comment
  CHSC115325  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Below the high water line of Lake Oroville, Vinton Gulch, about 10 miles (air) north of Oroville. 307 Comment
  CHSC48322  Lepidium didymum Vernon Oswald 1984-5-27 1209 Butte Sacramento River, Bidwell State Park, near the boat ramp. 39 Comment
  CHSC3947  Lepidium nitidum L. R. Alexander 1967-4-1 20 Butte Found n of Chico on right hand side of Cohaset road directly across from the first entrance to Chico Municipal Airport. 59 Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CAS-BOT-BC89880  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  CAS-BOT-BC12847  Lepidium pinnatifidum H. A. George; V. Simpson; E. Littrel 1971-6-14 s.n. Butte Gray Lodge Wildlife Management Area, 7 miles southwest of Gridley. 27 Comment
  CHSC101695  Lepidium strictum Lowell Ahart 2009-4-26 15608 Butte Upper Bidwell Park, on the west side of Highway 32, parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC38057  Lepidium strictum R. E. Preston 1983-5-26 386 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 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
  CAS-BOT-BC13067  Lepidium virginicum var. menziesii L. S. Rose 1931-4-14 s.n. Butte Oroville. Comment
  CHSC25356  Lepidium virginicum var. pubescens M. P. Hayes 1977-4-22 10 Butte Along Hwy 70 ca 2.2 km sw of Butte-Plumas county line, ca 23 km nw of Paradise. 485 Comment
  SEINET4670739  Leptochloa dubia R. McKee 1907-7-8 17212 Butte Chico Comment
  CAS-BOT-BC273949  Leptochloa fusca subsp. fascicularis Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  UCD63665  Leptochloa fusca subsp. fascicularis Beecher Crampton 1957-9-17 4619 Butte Biggs Rice Exper. Station, 5 mi. northwest of Biggs. Comment
  CHSC92505  Leptochloa fusca subsp. uninervia Lowell Ahart 2005-12-11 12517 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS110445  Leptochloa fusca subsp. uninervia Lowell Ahart 2005-12-11 12517 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC28978  Leptosiphon bolanderi R. A. Schlising 1980-3-17 3514 Butte E of Chico and SW of Paradise, along Skyway, on cliffs above Butte Creek. 213 Comment
  CHSC40923  Leptosiphon bolanderi Lowell Ahart 1985-5-15 4984 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC28165  Leptosiphon ciliatus J. D. Jokerst 1979-5-7 222 Butte Along roadside. Cohasset Hwy., 5 mi N. of Chico Muni. Airport. 365 Comment
  CHSC35111  Leptosiphon parviflorus R. Schlising; R. Banchero 1981-4-17 4037 Butte SE of Oroville and NE of Honcut, 1.1 mi S of jct Grubbs and Dunstone Roads, along latter. Comment
  CHSC62776  Leptosiphon parviflorus L. P. Janeway 1993-5-2 4340 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  JEPS124203  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte About 9 1/2 miles north of Oroville. Comment
  JEPS120029  Lessingia nana Lowell Ahart 2012-8-22 18419 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
  UC1287397  Lessingia nana Willard Spence 1960-9-7 626 Butte approximately 7 mi s Oroville (alternate Rt. 40) Comment
  CHSC98889  Lessingia nemaclada L. P. Janeway 2007-10-8 9216 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; near North Rim Trail along ridge overlooking Salmon Hole. 351 Comment
  SEINET10474777  Lessingia nemaclada Mary Susan Taylor 1981-7-10 Taylor 4062 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC23865  Lessingia virgata Lowell Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34143  Lessingia virgata L. Ahart 1981-9-27 3211 Butte Field near or ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  CHSC38377  Lessingia virgata Vernon Oswald 1983-8-26 1030 Butte Upper Bidwell Park, Chico, near the n-e side of Horseshoe Lake. 103 Comment
  UCR7826  Leucothoe davisiae Wm. Horn Jr. 1964-7-1 640701- 01 Butte 9 miles east of De Sabla 1159 Comment
  CHSC100837  Lewisia nevadensis R. A. Schlising 1980-6-26 3787 Butte 3.2 mi SEof Butte Meadows on Bull Hill Road (='Skyway'); in meadows along Bull Creek. 1511 Comment
  CHSC27186  Ligustrum japonicum P. Moyer; R. Pessner 1971-10-1 22 Butte CSUC Campus. N bank Chico Ck., along So-wil-len-no Ave. 60 Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CHSC27675  Limnanthes alba Robert A. Schlising 1978-4-23 3223 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. On ridgetop. Comment
  POM181724  Limnanthes alba H. F. Copeland 1923-4-12 618 Butte near Biggs Comment
  SEINET10495213  Limnanthes alba Mary Susan Taylor 1978-5-6 Taylor 1622 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  HSC97150  Limnanthes alba subsp. alba T. W. Henrich 2004-4-15 Butte NE of Viceroy Drive and Camberwell Court, NE Chico. Comment
  HSC92521  Limnanthes douglasii subsp. nivea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 44 Butte On N Table Mtn., S of Paradise on Cherokee Rd., at E end of Table Mtn. 381 Comment
  POM86189  Limnanthes douglasii subsp. rosea C. C. Bruce 1897-04 1910 Butte [No location information on label.] Comment
  UCD116437  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  CHSC67548  Limnanthes floccosa subsp. californica James D. Jokerst; Greg Sutter 1991-3-26 3225 Butte Type Locality: S and adjacent to Gold Run Creek 50 m W of Hwy. 99. Comment
  CHSC67551  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3044 Butte Cohasset population E and adjacent to Cohasset Rd. ca. even with N end of Chico Municipal Airport runway. Comment
  POM86002  Limnanthes striata C. C. Bruce 1897-06 s.n. Butte [No location information on label.] Comment
  CHSC72401  Limnophila X ludoviciana Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9674 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  CDA6277  Limnophila X ludoviciana Vernon Oswald, Lowell Ahart & Barbara Ertter 1998-10-22 9674 Butte Northeast corner of Hamilton and Riceton Roads, Rice Experiment Station northwest of Biggs. Comment
  SEINET10964491  Limosella Mary Susan Taylor 1980-5-31 Taylor 2764 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  JEPS120655  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC103693  Limosella aquatica Lowell Ahart 2010-5-14 16657 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  SEINET10496785  Linanthus bakeri Lowell Ahart 1985-5-15 Ahart 4984 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  UC1586606  Linanthus bicolor Vernon H. Oswald and Lowell Ahart 1991-5-31 4634 Butte s side Thermalito Diversion Pool (Dan Beebe Trail, between Oroville Dam Blvd East and Glen Pond, in the Lake Oroville State Recreation Area); Lake Oroville State Recreation Area 91 Comment
  SEINET12326966  Linanthus filipes R. J. Goedl 1979-1 27 Butte 3.5 mi E of Hwy 99 and Chico, 20 ft N of Skyway 213 Comment
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC117420  Lindernia dubia var. anagallidea Lowell Ahart 2016-5-30 20883 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC76427  Lipocarpha aristulata Lowell Ahart 1999-10-28 8300 Butte On the west side of a large pond, 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
  SEINET13711404  Lipocarpha aristulata Lowell William Ahart, Lowell William Ahart 1999-1 8146 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CHSC112327  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC97417  Lipocarpha micrantha Robert Fischer 2006-6-18 1021 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC110975  Liquidambar styraciflua Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte Lawn, on the northeast side of Sycamore Pool, Lower Bidwell Park Chico. 61 Comment
  NY43775  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC62459  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Plumas National Forest. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees Road; ca 1.25 mi northeast of Coyote Gap. 1463 Comment
  SEINET10483000  Lithophragma Mary Susan Taylor 1981-5-7 Taylor 3635 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
  CHSC2471  Lithophragma bolanderi R. Carter 1965-3-13 157 Butte Found on North Table Mt. ca. 20 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  UCD102715  Lithophragma bolanderi Michael A. Vincent; Ethan H. Freid 1998-4-6 8135 Butte Table Mountain. Comment
  CAS-BOT-BC430887  Lithophragma bolanderi C. F. Baker 1903-4-11 3041 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. Comment
  CAS-BOT-BC432265  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CAS-BOT-BC438121  Lithophragma parviflorum Mary E. Wall 1938-4-15 s.n. Butte Las Plumas Comment
  RSA715850  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  SEINET10497326  Lithospermum californicum Mary Susan Taylor 1981-3-16 Taylor 3403 Butte T21N R6E ne sec 24. Brush Creek quad. Just off tractor-fire rd, ca. 1/4 mi n of 21N89, ca. 0.5-1 mi nw of its jct with Zink Rd, ca. 1 air mi sw of Brush Creek. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC38049  Lobularia maritima R. E. Preston 1983-1-14 378 A Butte Collected from the planter on First St, on S side of Kendall Hall, campus of C.S.U., Chico. Comment
  CHSC117003  Logfia gallica Lowell Ahart 2016-6-4 20928 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC4377  Lolium multiflorum M. M. Gregg 1966-5-21 171 Butte NW corner of CSC campus around the artificial ski jump. Chico. Comment
  CHSC31716  Lolium perenne L. Ahart 1972-5-8 104 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS25803  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  UC625528  Lomatium caruifolium var. denticulatum Frank W. Gould 1938-4-23 311 Butte 2 mi. n. Chico 60 Comment
  JEPS119608  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CHSC32732  Lomatium marginatum M. S. Taylor 1981-4-8 3490 Butte E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo gap on hwy 70; rd bank. 396 Comment
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC14053  Lomatium utriculatum J. Farrell 1974-5-15 26 Butte Collected in grassy area near Honey Run Covered Bridge on Humbug Rd, ca. 6 mi e of Chico. Comment
  CHSC8587  Lomatium utriculatum G. Smalley 1968-3-17 Butte Collected on south side of block faulted Chico Monocline, ca. 1 mile east of Bidwell Park golf club. 106 Comment
  SEINET10454533  Lomatium utriculatum Mary Susan Taylor 1980-4-19 Taylor 2534 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  SD5000  Lonicera conjugialis E. B. Copeland 1930-6-27 Butte Jonesville 1550 Comment
  CAS-BOT-BC240449  Lonicera hispidula Mrs. J. H. Morrison 1932-6-1 s.n. Butte Near Durham Comment
  CHSC109121  Lonicera hispidula Lowell Ahart 2012-2-22 17739 Butte On the high east bank of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  CHSC28429  Lonicera hispidula M. S. Taylor 1979-10-5 2238 Butte SE side of Paradise Lke, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CHSC48017  Lonicera hispidula Vernon Oswald; M. S. Taylor 1985-5-30 1790 Butte Four Trees Rd. 0.5 mi E of Hwy 70. 536 Comment
  RSA725050  Lonicera hispidula var. vacillans L. P. Janeway 2007-6-11 9039 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  CHSC31559  Lonicera interrupta L. Ahart 1978-6-2 1749 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC40315  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 11/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  SEINET10465044  Lonicera japonica Mary Susan Taylor 1975-6-22 Taylor 784 Butte California State University, Chico, campus. 61 Comment
  UC726026  Lotus grandiflorus var. grandiflorus A. A. Heller 1938-5-28 15125 Butte w of Pulga (on the Feather River Highway) Comment
  UC171019  Lotus incanus H. M. Hall 1913-5-27 Butte Stirling City Sierra Nevada Mountains Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  JEPS103299  Lotus micranthus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  SEINET12161683  Lotus micranthus B. L. Wiley 1975-1 6 Butte 5.4mi up Cherokee Rd from junct w/ Table Mtn Blvd 488 Comment
  SEINET12164066  Lotus micranthus Unknown 1980-1 19 Butte W side of rd ca 5miN of jct of Cheroke Rd and Nelson Rd. Oroville Quadrangle. Sec17 T20N R4E 366 Comment
  UC1562361  Lotus nevadensis var. nevadensis Vernon Oswald and Lowell Ahart 1990-7-5 4349 Butte just w Scout Rd. (on the n side of Humboldt Rd, n edge of Butte Meadows); Butte Meadows 1325 Comment
  UC1129010  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  CHSC94571  Ludwigia palustris Lowell Ahart 2006-9-11 13333 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
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC1135  Ludwigia peploides subsp. peploides D. Bower 1953-7-16 Butte 3A Llano Seco. Marsh. 30 Comment
  CHSC35656  Lunaria annua R. E. Preston 1982-4-20 243 Butte N bank of Chico Creek, ca. 100 yds w of Warner St bridge, Chico. Comment
  RSA325121  Lupinus albicaulis var. albicaulis M. S. Taylor 1981-5-14 3716 Butte 2.9 mi SW of Merrimac on Oroville-Quincy Hwy. 976 Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 Comment
  CHSC90076  Lupinus albifrons var. albifrons Ross Rowland 2001-4-25 54 Butte Area bordering the Skyway between Crossroads Road and Schmale Road. 616460mE/4400300mN/zone 10N. 475 Comment
  CAS-BOT-BC196250  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  JEPS97371  Lupinus angustiflorus Vernon H. Oswald 1995-8-2 7171 Butte T26N R5E ca. center NW1/4 Sec. 4, 6100 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 2.2 mi N of Jonesville Rd. (Forest Rd. 26N27) 1859 Comment
  UC1713209  Lupinus arbustus Brandegee 1882-7-14 134 Butte Sutton House Comment
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  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  CAS-BOT-BC196336  Lupinus argenteus var. argenteus J. D. Jokerst 1980-4-22 2261 Butte Top of Cohasset Ridge in community of Cohasset, SE of Cohasset Hwy and Cave Cr. 609 Comment
  SEINET12154426  Lupinus aridus Unknown 1890-1 s.n. Butte Comment
  RSA0036483  Lupinus bicolor Daisie Huang 2006-4-15 06041565 Butte Upper Bidwell Park, Horseshoe Lake. 114 Comment
  HSC43126  Lupinus bicolor Maralyn O'Meara 1974-4-20 279 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  JEPS119589  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  SEINET10937081  Lupinus densiflorus var. lacteus Emmrich 1975-5-2 EMMRICH 33 Butte Pentz rd. Ca. 1/4 Mi. W of intersection with hwy 70. Common along roadsides, Open areas of foothill woodland. Assoc: lupinus. Comment
  CHSC36836  Lupinus latifolius var. columbianus M. S. Taylor 1982-6-24 4738 Butte E side of Lea Mt. ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CHSC90365  Lupinus nanus Thomas E. Lewis 1978-3-29 7 Butte Ca. 200 m ne of Salmon Hole, ca. 5.5 km from the start of Upper Bidwell Park Rd, Chico. 230 Comment
  CHSC83987  Lupinus pachylobus Lowell Ahart 2003-4-8 10043 Butte About 40 yards and in the small canyon west of the tall Digger Pine on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 314 Comment
  CAS-BOT-BC8229  Lupinus pennellianus Amos Arthur Heller 1940-6-5 15705 Butte Along the Feather River Higway between Arch Rock Tunnel and Pulga Comment
  CHSC40597  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  POM193372  Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  JEPS117287  Lupinus polyphyllus var. burkei Lowell Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CAS-BOT-BC322126  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  UCD142127  Luzula comosa M. Vincent 1964-4-8 506 Butte PG and E Power Plant. Feather River Canyon. 2 miles northeast of new bridge. Comment
  CDA34742  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC113425  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC11962  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  UC1594729  Luzula comosa var. laxa Lowell Ahart 1992-8-26 6845 Butte About 1/2 mile north of the Carr Mine about 2 (air) miles south of Snow Mountain 1767 Comment
  UC398896  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC52714  Luzula comosa var. subsessilis L. P. Janeway 1987-5-10 2040 Butte Near PG and E ditch ca 3/4 mi north of DeSAbla Reservoir and near where Doe Mill Road crosses the ditch. 853 Comment
  CHSC38926  Luzula macrantha Vernon Oswald 1983-4-6 293 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. In a steamlet at the bottom of a slope bordering Chico Creek. 198 Comment
  CHSC54385  Luzula macrantha M. Bailey 1991-3-6 546 Butte On property s of Honey Run Road and e of Butte Creek; proposed location of Butte Creek Volunteer Fire Station. 103 Comment
  RSA718305  Luzula parviflora L. P. Janeway 2006-8-6 8830 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC102421  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC105263  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  UCD103040  Lythrum hyssopifolia E. M. Johnston 1915-1 W- 134 J Butte Biggs. Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC342643  Madia citrigracilis Vern Oswald; Bruce Baldwin 1988-6-16 3388 Butte Camp Creek Rd. ca. 0.5 mi ene of Pulga 512 Comment
  CHSC54861  Madia citrigracilis Vernon H. Oswald 1991-8-26 4848 Butte Chico Meadows on the southeast side of Big Chico Creek at the Scout Camp, ca. 1 mile north of Butte Meadows. Upper border of the meadow on the east side of the 'swimming hole. 1292 Comment
  SFV4039  Madia citriodora M. L. Vincent 1960-9-8 91 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  JEPS40334  Madia elegans H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  RSA755649  Madia elegans subsp. vernalis L. Ahart 2009-5-23 15726 Butte About 60 yards northwest of Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile west of Highway 32, about 10 miles northeast of Chico. 268 Comment
  CHSC39519  Madia exigua Lowell Ahart 1983-6-12 4050 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CAS-BOT-BC342962  Madia gracilis E. B. Copeland 1931-8-14 s.n. Butte Jonesville 1500 Comment
  CHSC93874  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east 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. 403 Comment
  SEINET10474817  Madia gracilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4232 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC32363  Madia subspicata J. D. Jokerst; M. S. Taylor, R. A. Schlising, D. Ikeda 1980-5-18 722 Butte Top of Cohasset Ridge along the S edge above Mud Cr. Comment
  CHSC33974  Maianthemum stellatum M. S. Taylor 1981-5-13 3705 Butte Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi s of Four Trees R, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  CHSC32380  Malacothrix floccifera J. D. Jokerst; R. A. Schlising 1980-7-2 927 Butte Junction of Garland Rd and Ponderosa Way, 2.4 mi SE of Hwy 32, ca 4 airline mi NNE of Forest Ranch. Comment
  CHSC69655  Malacothrix floccifera Vernon Oswald; Lowell Ahart 1997-9-9 8859 Butte North of Magalia and 0.4 mi northeast of Coutolenc Rd. on Jordan Hill Rd. to Whiskey Flat. Roadside. 670 Comment
  POM362394  Malacothrix floccifera L. Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown 370 Comment
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  SD122591  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, 2.0 miles northwest of Forbestown. 370 Comment
  UC196260  Marah fabacea A. A. Heller 1914-3-12 11193 Butte Canyon of Big Chico Creek 76 Comment
  CHSC87456  Marah watsonii R. D. Fischer 2004-3-20 90 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and beginning of Pine Trail. 454 Comment
  CHSC19932  Marrubium vulgare M. S. Taylor 1975-2-16 386 Butte Abundant ca. 2 mi s of Concow Reservoir on Jordan Hill Rd. Comment
  CDA42740  Marsilea T. C. Fuller 1958-4-15 4798 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  JEPS107275  Matricaria discoidea Lowell Ahart 2005-4-18 11731 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-BC422643  Meconella californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  JEPS115379  Medicago lupulina Lowell Ahart 2009-6-3 15834 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET12155162  Medicago orbicularis P. L. Ricker 1912-1 3958 Butte Chico Comment
  UCR237328  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18738 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CDA13300  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-9 13148 Butte Plumas National Forest; Scattered individuals in old roadbed. Coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp on 23N15. Perennial. Comment
  SEINET175798  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville Butte County. 1550 Comment
  CAS-BOT-BC269374  Melica californica Lowell Ahart 1987-5-9 5582 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  UCD87159  Melica californica W. R. Powell 1968-5-17 1511 Butte Along new Oro-Feather Falls Road, 4 miles north-northwest of Rackerby. 548 Comment
  SEINET11688662  Melica californica K. R. Pearson 1983-1 19 Butte ca 200 m NNE of Chico Creek, 2 km NW of diversion dam, 3 km NNE of Chico 150 Comment
  RSA500431  Melica geyeri Vernon H. Oswald 1989-5-28 3787 Butte Logging road paralleling the west side of Butte Creek, 3.1 miles south of Humboldt Road (near Butte Meadows). 1293 Comment
  CAS-BOT-BC281304  Melica harfordii M. S. Taylor 1978-7-21 1807 Butte On N side of Oroville - Quincy Highway , ca 9 miles N of Lake Madrone 914 Comment
  CHSC116593  Melica harfordii L. P. Janeway 2015-6-17 11782 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower forbestown Road 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. 826 Comment
  CHSC49559  Melica harfordii Vernon Oswald 1988-6-2 3348 Butte Spur Rd. 210G on w side of Hwy 32 ca. 0.3 mi n of Platte Mt. Lookout. 975 Comment
  CHSC88257  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 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
  CHSC73896  Melica subulata B. Castro 1997-6-13 742 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. Along dirt road edges. 1082 Comment
  CAS-BOT-BC262502  Melica torreyana A. A. Heller 1902-5-13 554 Butte Near Clear Creek Comment
  CHSC42926  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  JEPS110218  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  RSA712996  Melica torreyana L. Ahart 2006-5-19 12632 Butte 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. On the west side of the dirt road 406 Comment
  RSA0080125  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte West of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC103163  Mentha arvensis Lowell Ahart 2009-11-19 16543 Butte North of the rose thicket, 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
  RSA755347  Mentha arvensis L. Ahart 2009-7-9 16009 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS119563  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  SD6717  Mertensia sibirica Mrs. R. M. Austin 1882-1 Butte Comment
  CHSC52135  Micranthes bryophora L. P. Janeway; R. A. Schlising 1988-7-22 3060 Butte Shaded flat in woods on the SW slope of upper Coon Hollow. 1859 Comment
  CHSC38679  Micranthes fallax Vernon Oswald 1983-3-7 130 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CAS-BOT-BC428993  Micranthes fragosa J. D. Jokerst; M. S. Taylor 1980-2-23 447 Butte Ca. 1/4 mi ne of Neal Rd, ca. 7 mi s of Chico. Comment
  CHSC7051  Micranthes integrifolia J. G. Moore 1969-2-25 112 Butte In Upper Bidwell Park 200 yds. w of rifle range and 100 yds. n of golf course entrance. 67 Comment
  JEPS120046  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC58955  Micranthes odontoloma Lowell Ahart 1992-7-26 6852 Butte On the edges of a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  SJSU10057  Micropus californicus C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  SEINET10839143  Micropus californicus Lowell Ahart 1985-5-15 Ahart 4994 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SD116532  Micropus californicus var. californicus Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3279 Butte Peter Ahart Ranch; 2.5 miles northnortheast of Honcut. 29 Comment
  CAS-BOT-BC348461  Micropus californicus var. californicus Mrs. C. C. Bruce 1897-1-1 s.n. Butte Unspecified Comment
  UCD80102  Microseris acuminata CNPS SN Foothill Team 2005-4-13 SNFN 0078 b Butte City of Chico, Doe Mill Meadowfoam Preserve, located at the east end of Warfield street, east side of the creek diversion between the diversion and the creek, ~85 m south of the Preserve gate entrance. 82 Comment
  CHSC48186  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3294 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence. 54 Comment
  SEINET12319567  Mimulus angustatus C. A. Gardner 1974-1 14 Butte Table Mountain, ca 6 mi N of Oroville 244 Comment
  UC454136  Mimulus aurantiacus var. grandiflorus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  UC196163  Mimulus bicolor A. A. Heller 1914-5-17 11338 Butte near Forest Ranch 731 Comment
  JEPS118486  Mimulus breweri Lowell Ahart 2011-7-9 17562 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 1009 Comment
  RSA60037  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  HSC32396  Mimulus kelloggii R. A. Vanbianchi 1974-4-20 233 Butte Table Mtn. 305 Comment
  UCD85074  Mimulus laciniatus Dena Grossenbacher; Marisano James 2009-6-7 1032 -a Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
Read comments
Jan 24 2017
  JEPS32451  Mimulus latidens Peter H. Raven 1963-5-8 18361 Butte 5 mi w Chico (on State Highway 32) Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  CHSC64052  Mimulus moschatus S. C. Morey 1984-8-4 709 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  CHSC93973  Mimulus pulsiferae R. D. Fischer 2004-6-20 752 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 off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  SEINET11261613  Mimulus torreyi Dena Grossenbacher, Marisano James 2009-6-7 1033 Butte Along Bean Creek Road 1/1 miles east of junction with Bald Rock Road. Private property.; 0 984 Comment
  POM181509  Mimulus tricolor H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  SEINET12326992  Mimulus tricolor Unknown 1984-1 16 Butte Oroville, flat area 10 yd S of Cottonwood Rd, 1.8 mi E of its junction with Hwy 99 46 Comment
  UCSB44145  Minuartia douglasii 1979-5-13 Butte 0.7 miles west on Lunt Road from Highway 70 Comment
  SEINET10537577  Minuartia pusilla Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5241 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 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
  CHSC62558  Monardella breweri subsp. lanceolata B. Castro 1993-7-27 490 Butte Ca 3 mi SW of jcn of French and Peavine Creeks, at SE end of Swayne Hill, on USFS Rd 23N28 ca 0.8 mi W of its jcn with Rd 22N34. 737 Comment
  CHSC65565  Monardella breweri subsp. lanceolata R. Banchero 1981-6-16 508 Butte Ca. 0.9 mi SE of Cohasset School. 768 Comment
  SEINET10928168  Monardella lanceolata A. Graff 1993-7-23 Graff 341 Butte Plumas National Forest. Hwy. 70, 2 miles past Arch Rock Tunnel, on left roadside. T23N,R5E,S14. Small, dense population growing in granitic soil in the understory of Abies concolor, Umbellularia californica, Quercus kelloggii, Q. chrysolepis, Platanus racemosa. End of bloom. Comment
  UC196294  Monardella odoratissima subsp. glauca A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  UC525857  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville 1800 Comment
  UC883637  Monardella odoratissima subsp. pallida A. A. Heller 1914-7-23 11604 Butte Chico Meadows 1219 Comment
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  HSC96903  Monardella sheltonii L. Ahart 2006-6-9 12655 Butte E side of Bardees Bar Rd. 1/8 mile W of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) SW of Pulga 386 Comment
  CHSC34130  Monochoria vaginalis L. Ahart 1981-9-19 3193 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w of Hwy 99 on Hwy 162, ca. 3 mi n of Biggs. 35 Comment
  UC1586510  Monochoria vaginalis Vernon H. Oswald and Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Highway 162, ca. 3.5 mi north-northwest of Biggs. 30 Comment
  NY411115  Monochoria vaginalis L. Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. Valley Grassland. 33 Comment
  CAS-BOT-BC444884  Montia fontana Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC101088  Montia fontana subsp. amporitana Lowell Ahart; John Dittes 2009-3-20 15513 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC38632  Montia fontana subsp. chondrosperma Vernon Oswald 1983-3-13 164 .5 Butte Upper Bidwell Park, Chico, ca. 400 ft s and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC39928  Montia fontana subsp. chondrosperma M. S. Taylor; V. Oswald 1984-4-4 5384 Butte S side of Humbug Rd, ca. 6 mi NE of Honey Run Covered Bridge, ca. 10 air mi NE of Chico. 371 Comment
  CHSC94589  Muhlenbergia andina Lowell Ahart 2006-9-11 13306 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
  CAS-BOT-BC260541  Muhlenbergia filiformis Clarence R. Quick 1963-7-16 63 54 b Butte Section Corner Meadow, E of Pulga, Feather River Canyon 1463 Comment
  CAS-BOT-BC274932  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC103438  Muhlenbergia rigens Lowell Ahart 2009-11-19 16541 Butte East edge of the south part of a meadow, 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. 215 Comment
  CHSC36072  Myosotis verna R. A. Schlising; D. Burk, A. Dawson 1982-6-2 4285 Butte N of Oroville and n of Concow Reservoir just s of Flea Valley at headwaters of Concow Creek. Meadow. 1036 Comment
  CHSC55399  Myosurus minimus subsp. minimus L. P. Janeway 1991-5-1 3922 Butte Ca 1 mi south of Wyandotte and ca 1/4 mi west of Dunstone Drive. 182 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
  CHSC3169  Narcissus pseudonarcissus Dona Kingsford 1966-3-12 Butte Yard at 528 W. 3rd. Street, Chico. Comment
  CAS-BOT-BC60373  Nasturtium officinale Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  SEINET10496819  Navarretia divaricata Mary Susan Taylor 1980-5-15 Taylor 2629 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC45756  Navarretia divaricata subsp. divaricata L. P. Janeway 1988-6-14 2779 Butte Near W Br Butte Creek at crossing of road 1.9 mi W from hwy 32 towards Ewalt Camp. Near a mdw. 922 Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  CHSC62126  Navarretia filicaulis B. Castro 1987-5-21 123 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. In middle of dirt road along top of ridge. 487 Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  SEINET10496823  Navarretia filicaulis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4092 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC36713  Navarretia heterandra D. H. Ikeda 1980-5-8 346 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pool. Comment
  CHSC1293  Navarretia intertexta M. Roberson 1956-5-21 Butte SW of Paradise near Skyway. 426 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
  CHSC39953  Navarretia intertexta L. Ahart; P. Ahart 1983-6-26 4140 Butte Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. 500 Comment
  RSA122934  Navarretia intertexta C. G. Albertus 1933-6-6 27 Butte 0.5 mile west of Pentz. 137 Comment
  UCD106118  Navarretia intertexta subsp. propinqua L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC4468  Navarretia leucocephala C. Glascock 1965-3-23 337 Butte Ca. 0.5 mi. S from US99E on Broyles Rd (ca. 10 mi. NW of Chico). At W roadside. Comment
  CHSC91113  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
  UC1228175  Navarretia nigelliformis Beecher Crampton 1960-6-15 5622 Butte 10 mi se Chico Comment
  UCD48552  Navarretia nigelliformis Robert E. Preston 2004-5-25 2246 Butte Ca. 5 mi N of Oroville, at E side of substation. 53 Comment
Read comments
Feb 28 2007
  UC172847  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte near Pents 152 Comment
  CHSC1299  Navarretia tagetina V. Holt 1942-5-16 Butte Chico Creek. 121 Comment
  CHSC28486  Navarretia tagetina R. A. Schlising 1979-5-30 3425 Butte Richvale Vernal Pools. 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC38605  Navarretia tagetina Vernon Oswald 1983-5-21 510 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC91120  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  UCD48660  Navarretia tagetina M. Vincent 1963-6-5 381 Butte Pentz road 5 miles south of Paradise. Roadside. Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC40032  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Moist woodland soil along Chico Creek about six miles east of Chico. Comment
  CHSC52344  Nemophila heterophylla J. D. Jokerst 1985-4-23 2263 Butte Top of North Table Mountain. N of Cherokee Rd., E edge of Beatson Hollow at the second drainage N of road. 365 Comment
  SEINET10837217  Nemophila heterophylla Mary Susan Taylor 1973-1 Taylor 61 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC31111  Nemophila maculata Leslie Steidl 1980-4-10 16 Butte Ca. 18.5 mi ene of Oroville, ca. 3.25 mi e of Lumpkin Rd., ca. .5 mi w of Lake Oroville, ca. 1.25 mi n of old railroad grade, ca. 6 yd se of dirt road. 353 Comment
  UC1562353  Nemophila parviflora Vernon Oswald 1990-7-3 4345 Butte ca 0.75 mi s Humbug Summit (ca 4.75 mi e of Jonesville, headwaters of the East Branch Willow Creek); e branch Willow Creek, s of Humbug Summit, e of Jonesville 1950 Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  CHSC39094  Nemophila spatulata R. A. Schlising 1982-5-19 4246 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CHSC112924  Nicotiana acuminata var. multiflora B. Castro; R. Carter 2010-7-13 1823 Butte Sacramento Valley. S side of Thermalito Power Canal ca 0.3 mi E of Hwy 70, ca 0.25 mi W of Table Mtn Blvd and ca 0.25 mi S of Garden Drive , on the north end of Oroville. 70 Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CDA5774  Nicotiana acuminata var. multiflora L. Ahart, Vernon Oswald 1999-8-13 8135 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC38723  Nicotiana quadrivalvis Vernon Oswald 1983-6-13 669 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. 91 Comment
  CHSC75975  Nicotiana quadrivalvis Lowell Ahart; Vernon H. Oswald 1999-8-13 8136 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
  UCD137710  Nuphar polysepala Herbert L. Mason; Verne Grant 1946-8-14 13029 Butte Sacramento Outing Club. Butte Sink. Comment
  CDA14775  Nymphaea odorata G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3379 Butte Madrone Lake (Berry Creek). 600 Comment
  CHSC105264  Olea europaea Lowell Ahart 2010-6-20 16817 Butte On the south side of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC93086  Olea europaea L. P. Janeway 2006-2-5 8555 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; between North Rim Trail and the northern boundary fence, 650 m northeast of the upper high-power lines, about 50 m southeast of the fenceline. 283 Comment
  UC426981  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville 1550 Comment
  RSA0059256  Orobanche californica subsp. grayana Herbert F. Copeland 1928-8-29 1019 Butte Jonesville. Comment
  SEINET12326947  Orthocarpus attenuatus S. C. Joslin 1978-1 6 Butte ca 5 mi E of Chico on Humbug Rd ca 0.75 mi W of intersection with Hwy 32 244 Comment
  SEINET10744780 Image available Orthocarpus bicolor A. Arthur Heller, H. E. Brown 1902-5-10 Heller 5519 Butte Berry Canyon (Near Clear Creek). Comment
  POM286324  Orthocarpus erianthus Lyman D. Benson 1935-3-27 6366 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC30979  Osmorhiza chilensis M. S. Taylor; R. Schlising 1980-7-6 3082 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  CHSC40214  Osmorhiza chilensis Lowell Ahart 1985-7-9 5119 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC58872  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UCSB36279  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte collected in a ditch between Service Road 33 and Service Road 34 at Lattermore portion of California Rice Experiment Station, between Briggs and Richvale Lattermore, Briggs and Richvale Comment
  CHSC20516  Oxalis rubra M. S. Taylor 1975-6-25 808 Butte In lawns, 1456 Arcadian, Chico. 60 Comment
  CHSC26738  Oxypolis occidentalis M. S. Taylor 1977-7-15 1407 Butte On edge of Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CAS-BOT-BC316891  Packera eurycephala var. lewisrosei John Thomas Howell 1959-9-26 35092 Butte Pulga Bridge, north fork Feather River Comment
  CHSC93509  Packera eurycephala var. lewisrosei Lowell Ahart 2006-5-10 12616 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
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CHSC113112  Panicum capillare Lowell Ahart 2013-11-13 19242 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS95815  Panicum capillare Lowell Ahart 1999-9-21 8281 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
  JEPS124344  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2015-10-26 20606 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 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
  CHSC36099  Parnassia palustris R. A. Schlising; K. Tarp 1982-7-24 4337 Butte E of Stirling City at West Branch of the Feather River, below Diversion Dam on Retson Road. 975 Comment
  SEINET7067155  Parvisedum pumilum A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  CHSC94686  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 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
  CHSC31475  Paspalum urvillei L. Ahart 1980-7-29 2496 Butte Along the edge of a stream, near Hurleton Swedes Flat Rd, ca. 1 mi s of Forbestown Rd, near Hurleton. 600 Comment
  CHSC50424  Pectiantia breweri Vernon Oswald; Lowell Ahart 1990-6-20 4302 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  JEPS107355  Pectocarya pusilla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte Big Chico Creek Ecological Reserve. Ridge top, on the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico 487 Comment
  CDA33282  Pedicularis attollens T. C. Fuller 1962-7-12 8199 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  HSC66079  Pellaea andromedifolia M. S. Taylor 1980-3-30 2411 Butte Salmon hole, upper Bidwell Park, Chico 244 Comment
  CAS-BOT-BC67598  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC28987  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC3555  Pellaea mucronata Gary Dutton 1966-2-28 104 Butte Found in upper Bidwell Park, 'Salmon Hole' 7.9 miles N. E. of CSC. Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  SEINET10529813  Pellaea mucronata var. californica Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3478 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  JEPS87422  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  RSA769602  Pellaea mucronata var. mucronata L. Ahart 2009-4-22 15601 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC114681  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Roadside, Highway 70, Jarboe Gap. 'Near Poe Power House'. Comment
  CHSC99572  Penstemon azureus var. azureus L. P. Janeway 2008-5-26 9372 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 Comment
  SD4638  Penstemon deustus E. B. Copeland 1931-6-11 690 Butte Jonesville, on dry cliffs 1600 Comment
  CHSC37271  Penstemon deustus var. suffrutescens L. Ahart 1982-6-15 3583 Butte Ca. 1.5 mi e of Camp 18, ca. 18 mi e of Feather Falls. 1000 Comment
  CHSC11092  Penstemon heterophyllus var. purdyi Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  CHSC44704  Penstemon laetus var. leptosepalus R. Banchero 1980-6-12 215 Butte Jct of Humbolt Rd and Hwy 32. 1024 Comment
  RSA402135  Penstemon laetus var. leptosepalus Francis W. Pennell, A. A. Heller 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen Nat'l Foresst. 640 Comment
  NY627277  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit) 1706.9 Comment
  CAS-BOT-BC245635  Penstemon personatus Lowell Ahart 1984-7-19 4761 Butte About 1 mile north-east of Bald Mountain, about 6 miles north-east of Stirling City 1900 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
  SEINET5329274 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1554 Comment
  CHSC39772  Pentagramma triangularis Richard K. McGaugh 1979-4-7 6 Butte Sec. 20 , Table Mt., ca. 120 m. w. of Cherokee Rd., 5.65 km. n. of Oroville. 457 Comment
  CHSC51052  Pentagramma triangularis Pauleen Broyles 1987-2-7 994 Butte Along the bank of Pine Creek. Comment
  CHSC29006  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-8 2374 Butte In Pulga, ca. 28 mi ne of Oroville. 487 Comment
  CHSC44617  Pentagramma triangularis subsp. semipallida Vernon Oswald 1984-4-9 1139 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC46035  Pentagramma triangularis subsp. semipallida Lowell Ahart 1978-4-19 1655 Butte Along the edge of the Feather Falls trail, about 4 miles north of Feather Falls. 548 Comment
  SEINET3166411  Pentagramma triangularis subsp. triangularis P. J. Alexander 2009-5-27 1049 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  CHSC38744  Perideridia kelloggii Vernon Oswald 1983-6-7 644 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC40233  Perideridia lemmonii Vernon Oswald 1985-6-20 1850 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  SEINET10906780  Perideridia oregana Lowell Ahart 1985-6-17 Ahart 5061 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC40240  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1896 Butte Chaparral Guard Station on Humbug Rd. 2.0 mi sw of Philbrook Rd. Near a creek on the s side of the road. 1463 Comment
  CHSC40909  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CAS-BOT-BC418859  Persicaria hydropiperoides Lowell Ahart 1982-10-6 3847 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC38618  Persicaria lapathifolia Vernon Oswald 1983-6-27 760 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CHSC94488  Persicaria punctata Lowell Ahart 2006-8-29 13238 Butte West side of the gravel road, southwest of Parking Lot 17, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  CHSC4644  Petrorhagia dubia R. Carter 1966-4-26 368 Butte Found ca. 10 mi. NE of Oroville on E side of Oroville-Quincy Rd., .3 mi. S of intersection with USFS road 21N40 to Bloomer Mt., growing 10 yds. off road. 609 Comment
  SFV1248  Petrorhagia dubia M. L. Vincent 1962-4-17 201 Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  RSA41905  Petrorhagia dubia Ella Dales Cantelow 1940-5-10 3078 Butte 10 miles E of Oroville, Bidwell Bar Bridge. Comment
  UC107479  Phacelia cicutaria Mrs. R. M. Austin May 1883 s.n. Butte Iron Canyon, above Chico Comment
  CDA13727  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1997-6-27 13905 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  SD58482  Phacelia heterophylla subsp. virgata L. R. Heckard 1956-8-6 821 Butte 6.0 miles southwest of Stirling City, along road to Magalia. 792 Comment
  UC175560  Phacelia imbricata A. A. Heller 1913-6-6 10786 Butte 8 mi n Oroville; Table Mountain 182 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  CHSC39122  Phacelia procera R. A. Schlising 1980-7-5 3838 Butte First crossing of Butte Creek on main road, e of Butte Meadows; at immediate roadside in region of streamside vegetation. 1341 Comment
  JEPS122160  Phalaris arundinacea Lowell Ahart 2014-8-13 19699 Butte On the southeast side of Humbug Summit Road, about 100 yards southwest of the Way Point, about 200 yards southwest of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  JEPS94650  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC103721  Phalaris paradoxa Lowell Ahart 2010-5-14 16661 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
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  UC204880  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte near Nelson Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  CHSC28564  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi w of Lake Madrone. 997 Comment
  CHSC40293  Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  CHSC41283  Phleum pratense S. C. Morey 1983-7-21 500 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC64261  Phleum pratense S. C. Morey 1983-7-28 630 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCR115104  Phleum pratense G. Fred Hrusa, T. D. Wilfred 1996-7-9 13147 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  SEINET10496905  Phlox speciosa subsp. occidentalis Mary Susan Taylor 1981-5-21 Taylor 3779 Butte 3200 ft. T23N R4E sw sec 36, Pulga SW quad. E side of Concow Rd, ca. 0.3 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. Yellow Pine Forest, developed serpentine soils; 975 Comment
  CHSC38543  Phoradendron villosum Vernon Oswald 1982-11-13 13 Butte Bidwell Park, Chico. North Rim Trail, ca. 1.5 mi e of the power lines. 365 Comment
  CHSC77496  Phoradendron villosum Tim Stofer 1997-4-12 8 Butte Located on the east side of trail 100 yrds from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC1997  Phyla nodiflora var. rosea V. Holt 1935-9-1 Butte Dodge Lands. 30 Comment
  CHSC42333  Phyllostachys bambusoides B. C. Willingham 1968-6-3 Butte Plant Introduction Station, Chico. Purchased in Nagasaki, Japan. Comment
  CHSC36514  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte On bottom of a wash, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC102824  Phytolacca americana Lowell Ahart 2009-7-3 15995 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. 67 Comment
  CHSC109764  Phytolacca americana var. americana Lowell Ahart 2012-10-28 18524 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS127263  Pilularia americana Lowell Ahart 2016-5-30 20882 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC8572  Pinus M. MacArthur 1968-6-17 293 Butte S. side of Administration Building, Chico State College campus. 60 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  CHSC79  Pinus sabiniana M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS106053  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC25253  Piperia transversa M. S. Taylor 1977-6-26 1388 Butte Ca. 2 mi. e of Cohasset. 762 Comment
  JEPS102238  Piperia transversa L. P. Janeway 1996-5-27 4981 Butte Northern Sierra Nevada Foothills. Next to the road into Vinton Gulch; 100 ft east of Cherokee Road. 307 Comment
  SEINET10529947  Pityrogramma triangularis var. pallida Mary Susan Taylor Taylor 984 Butte Bidwell Park, Chico. Comment
  SEINET10529966  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-19 Taylor 2390 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC100833  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 a Butte About 1 mile E of Chico between Hwy 32 and Humboldt Road. 76 Comment
  CHSC35064  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  SEINET12328372  Plagiobothrys glyptocarpus M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5408 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  SEINET12249492  Plagiobothrys greenei Unknown 1977-1 1297 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC46761  Plagiobothrys nothofulvus Lowell Ahart 1980-4-7 2072 Butte On the north side of Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC26798  Plagiobothrys stipitatus M. S. Taylor; H. Hayes 1978-4-14 1566 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  UC718179  Plagiobothrys stipitatus Carl B. Wolf 1937-5-14 Butte 5 mi nw Chico (Hamilton City Road); Sacramento Valley 45 Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 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 11 miles (air) southeast of Oroville. 38 Comment
  JEPS117201  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16652 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  JEPS120959  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  JEPS123905  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-4-24 20063 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS119682  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC33897  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, on ridge, ca. 0.5 mi s of its jct with Ponderosa Way (Rim Rd), ca 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 853 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  SEINET8219637  Plantago erecta C. E. Wickstrom 1964-3-3 7 Butte N. rim of Big Chico Creek Canyon, vic. of Salmon Hole, upper Bidwell Park; Chico. Comment
  CHSC102827  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC1222  Plantago lanceolata R. M. Staley 1952-7-5 Butte Paradise. 579 Comment
  CHSC97115  Plantago lanceolata Lowell Ahart 2007-7-27 14393 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC102715  Plantago major Lowell Ahart 2009-7-3 15990 Butte In watered lawn, about 60 yards west of the Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  SEINET13711423  Plantago major Lowell William Ahart, Lowell William Ahart 1999-1 8173 Butte 12 Air Mi SW of Chico, 2 Air Mi SE of Ordbend, Sacramento River Comment
  CHSC32583  Plantago major var. scopulorum L. Ahart 1976-9-21 1199 Butte Along the edge of the rd 1/8 mi e of Golden Trout Crossing, ca 3 mi w of the Sly Creek Reservoir, the crossing is a bridge across from the South Fork of the Feather River. 762 Comment
  CHSC33825  Plantago major var. scopulorum R. E. Preston 1981-8-5 121 Butte Wet gravel bar, n bank of Chico Creek; ca. 1 3/4 mi nne of the boundary of Upper Bidwell Park at Road's end, Chico. 228 Comment
  CDA42769  Plantago virginica L. 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. Comment
  CHSC26857  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1645 Butte In Cherry Creek Meadow, on s side of Old Humbodt Rd, ca. 4 mi e of Butte Meadows. 1524 Comment
  CHSC30674  Platanthera leucostachys M. S. Taylor 1978-7-21 1816 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  UC600640  Platanthera limosa E. B. Copeland July 1929 Butte Jonesville Comment
  SEINET10470070  Platanthera sparsiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4757 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC2383  Platystemon californicus R. Carter 1965-3-23 173 Butte Found ca. 7 mi. NW of Chico along E side of Hicks Ln. 25 mi. S of Keefer Rd., ca 10 yds. S of bridge, along roadside. 76 Comment
  RSA178678  Platystemon californicus var. californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico Comment
  CHSC50063  Plectritis ciliosa Lowell Ahart 1990-4-8 6447 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of the Section Corner of Sections 17, 16, 20 and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  CHSC6058  Poa E. Parreno 1968-3-15 41 Butte Right side of rd. leading to Missle Base, side intersecting with Keefer Rd., Chico. Comment
  JEPS116032  Poa annua Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS122268  Poa annua Lowell Ahart 2014-4-9 19324 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  UCD90353  Poa annua A. A. Heller 1914-3-28 11243 Butte Chico. Comment
  CAS-BOT-BC255685  Poa bolanderi H. F. Copeland 1920-7-24 19 Butte By Colby Creek 1828 Comment
  SEINET10934988  Poa bulbosa Mary Susan Taylor 1982-5-2 Taylor 4386 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
  UC1609012  Poa howellii Lowell Ahart 1993-6-26 7030 Butte ca 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge); Jackass Flat 1158 Comment
  CHSC101746  Poa pratensis subsp. pratensis Lowell Ahart 2009-5-23 15746 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC38846  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-9 463 Butte Upper Bidwell Park, Chico, along the Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  UC600761  Poa pratensis subsp. pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  CHSC31931  Poa pringlei J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1034 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CAS-BOT-BC236368  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst; R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. Ca. 4 miles E of Lake Madrone 1016 Comment
  CAS-BOT-BC236372  Poa secunda subsp. secunda Lowell Ahart 1980-3-15 2043 Butte Near intersection of Pentz Road and 99E 50 Comment
  CHSC103982  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16675 Butte On the south side of the Guardian Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 301 Comment
  CHSC25105  Poa secunda subsp. secunda R. W. Wallstrum 1970-3-26 8 Butte Lower side of dam at Magalia Reservoir, 8 mi from Paradise, on s side of road. 609 Comment
  HSC12182  Poa secunda subsp. secunda P. Van? 1918-4-29 2059 Butte Butte Creek about 4 mi. SE of Chico. Comment
  CHSC39500  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte Along the trail to the over-look to Feather Falls, about 2 1/2 miles north of the town of Feather Falls. 600 Comment
  JEPS120576  Poa sierrae L. P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon + / - overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  SEINET12319546  Pogogyne douglasii R. A. Schlising 1980-1 3589 Butte T23N R1W sec4, extreme N Butte County (Richardson Spgs. NW, 7.5' quad), * between Singer Creek and ? Comment
  CHSC42197  Pogogyne zizyphoroides John E. Hunter 1986-4-12 52 Butte Ca 1 km e of Chico, 50 m s of Hwy 32. 75 Comment
  UC883706  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north of Oroville Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  POM74713  Polemonium occidentale Mrs. R. M. Austin 1895-07 512 Butte Willow Creek (Devils Garden) Comment
  UC600676  Polemonium pulcherrimum E. B. Copeland July, 1930 Butte Big Summit Jonesville, Big Summit 2200 Comment
  CHSC28008  Polygala cornuta M. S. Taylor 1978-7-21 1798 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CAS-BOT-BC167554  Polygala cornuta var. cornuta C. R. Quick 1951-8-21 51 100 F Butte Near Lomo Junction Comment
  RSA699537  Polygala cornuta var. cornuta R. D. Fischer 2004-4-17 174 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek west of 10 Mile House Road where road and creek are closest. 198 Comment
  RSA769020  Polygonum arenastrum L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte North side of gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC107246  Polygonum aviculare Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC112725  Polygonum aviculare Lowell Ahart 2013-10-26 19217 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC46878  Polygonum aviculare Vernon Oswald 1989-9-6 3991 Butte Between the Midway and the railroad at Butte Creek, ca. 1.5 mi sse of Durham. Rancho Esquon. Common weed on hard-packed soil of a parking area on the north edge of the creek. 30 Comment
  CHSC41260  Polygonum bistortoides S. C. Morey 1983-7-21 480 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  UC849190  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte e Chico; Canyon of Chico Creek Comment
  UC85633 Image available Polygonum californicum Mrs. Bidwell July 1876 Butte Chico Comment
  RSA4393  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. 2100 Comment
  UC600498  Polygonum davisiae E. B. Copeland 1929-7-17 Butte in crater e Jonesville 2000 Comment
  SEINET10479642  Polygonum davisiae Mary Susan Taylor 1978-7-18 Taylor 1705 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC44254  Polygonum douglasii subsp. spergulariiforme V. Oswald; L. Ahart 1988-7-17 3590 Butte On the w side of Scotts John Creek at the 'camp' located 0.6 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  JEPS118058  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte Aboout 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Prk, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC46203  Polygonum minimum L. P. Janeway 1986-9-1 1825 Butte North side of Philbrook Reservoir at main PG and E campground. Open gravelly patch. 1691 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC30806  Polygonum parryi M. S. Taylor; R. A. Schlising 1980-7-6 3066 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  CHSC33762  Polygonum parryi R. A. Schlising; R. Banchero 1980-6-17 3727 Butte N of Magalia and De Sabla, along Skyway, ca 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  JEPS117284  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS94873  Polygonum punctatum Lowell Ahart 1998-9-11 8055 Butte about 7 air mi n Oroville (w of cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  RSA725032  Polygonum punctatum L. Ahart 2006-8-29 13237 Butte N of the canal and parking lot 16, W of the gravel road, Gray Lodge Wildlife area (Gray Lodge Waterflow Management area). 20 Comment
  CAS-BOT-BC420994  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  SEINET10530411  Polypodium californicum Mary Susan Taylor 1980-3-19 Taylor 2394 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
  CHSC108841  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the north side of a large rock, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC34240  Polypodium calirhiza M. S. Taylor 1981-5-7 3633 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC60943  Polypodium calirhiza Lowell Ahart 1993-7-6 7061 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10874638  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 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
  CHSC6127  Polypogon australis E. Parreno 1968-5-12 96 Butte Alligator Hole, creekbank of Chico Creek in Upper Bidwell Park, Chico. Comment
  UC184159  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch n Oroville; Table Mountain Olive Ranch Comment
  HSC97102  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  JEPS107782  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  SEINET10602418  Polypogon interruptus A. Arthur Heller 1914-5-19 Heller 11419 Butte Hills 8 miles north of Oroville. Comment
  CHSC90805  Polypogon maritimus Lowell Ahart 2005-5-2 11777 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-BC232578  Polypogon monspeliensis A. A. Heller 1902-5-15 5556 Butte Near Biggs Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC237453  Polypogon viridis Lowell Ahart 1980-9-10 2638 Butte 5 miles E of Milsap Bar 1200 Comment
  SEINET10470609  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4122 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CDA14049  Polystichum imbricans subsp. curtum G. F. Hrusa, T. D. Wilfred 1997-5-1 13697 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  UC1609395  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  SD234000  Polystichum munitum Virginia Pinkus Ryder 1965-4-4 400 Butte Megalia, Feather River. 701 Comment
  SEINET9625612 Image available Polystichum munitum E. B. Copeland 1931-6-10 s.n. Butte Ridge west of Willow Creek. Vicinity of Jonesville, Lassen National Forest. 503 Comment
  UCD136541  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  SD149211  Polystichum scopulinum Lowell Ahart, Vernon Oswald 1987-7-5 3189 Butte Rock outcrops skirting the north flank of Humboldt Peak on the Butte-Plumas county border, south of the Pacific Crest trail. 2070 Comment
  CHSC33402  Populus tremuloides R. E. Preston 1981-7-9 21 Butte Ca. 75 m of West Branch of Feather River, ca. 0.5 km s of Snag Lake, ca. 4.8 km sse of Jonesville. 1708 Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CHSC66688  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1996-7-22 8091 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.2, Sanctuary II. 32 Comment
  CHSC43803  Potamogeton natans Vernon Oswald 1987-7-29 3168 Butte Southwestern most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  JEPS95859  Potamogeton pusillus var. pusillus Lowell Ahart 1999-8-22 8190 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
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC539447  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC42427  Potentilla recta Lowell Ahart 1987-5-27 5690 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
  CHSC1066  Proboscidea louisianica E. Walker 1932-9-1 Butte Oroville-Marysville road. Comment
  CHSC66305  Proboscidea louisianica subsp. louisianica Vernon H. Oswald 1996-6-20 7834 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing on the edge of a marshy drainage on the dry bed of seasonal marsh at the NW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC52217  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-5 2154 Butte Upper reach of Carey Gulch where F. S. Rd 22N89 crosses it 0.5 mi from the OroQuincy Hwy. 1097 Comment
  CHSC48867  Prunus emarginata Vernon Oswald 1984-6-11 1286 Butte Humboldt Rd., 2.3 mi n-e of its jct. with Rd. 26N27 to Humbug Summit (near the n-e corner of Butte County). 1920 Comment
  SEINET10937252  Prunus emarginata Mary Susan Taylor 1976-4-4 Taylor 1063 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC61205  Pseudobahia heermannii Vernon H. Oswald; Lowell Ahart 1993-3-24 5239 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC116154  Pseudognaphalium beneolens Lowell Ahart 2015-11-7 20624 Butte On the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  JEPS124134  Pseudognaphalium beneolens Lowell Ahart 2015-11-7 20624 Butte About 1/8 mile south of the end of Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC357002  Pseudognaphalium luteoalbum Lowell Ahart 1979-12-29 2024 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC26783  Psilocarphus brevissimus var. brevissimus M. S. Taylor 1978-5-7 1614 Butte Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  UC195396  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte 8 mi from Chico (Chico-Oroville road) Comment
  CAS-BOT-BC361739  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CHSC11830  Psilocarphus oregonus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  JEPS119988  Psilocarphus tenellus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC148608  Ptelea crenulata Mrs. C. C. Bruce 1897-4-1 1803 Butte Forest Ranch Comment
  UC1602323  Ptelea crenulata J. E. Sowder 1933-7-7 110 Butte Camel Mound; Chico Quad. 609 Comment
  CHSC34152  Pteridium aquilinum var. pubescens L. Ahart 1981-9-15 3163 Butte N of Pinkard Creek, ca. 1 1/4 mi n of Lost Creek Reservoir, ca. 1 1/4 mi w of Sly Creek Reservoir. 396 Comment
  CHSC77029  Pteridium aquilinum var. pubescens D. L. Gott 1972-4-26 21 Butte E of Skyway, ca. 0.9 mi n of Stirling City turnoff and ca. 2 feet off road. 707 Comment
  NY406422  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC62562  Pycnanthemum californicum B. Castro 1993-7-7 468 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  SEINET10499004  Pycnanthemum californicum Mary Susan Taylor 1975-8-31 Taylor 888 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
  CHSC20490  Pyrola aphylla M. S. Taylor 1975-6-30 813 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  CHSC48675  Pyrola aphylla Vernon Oswald 1987-7-13 3106 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  SBBG28969  Pyrola asarifolia E. B. Copeland 1931-7-1 Butte Jonesville 1500 Comment
  UC1586496  Pyrola asarifolia Vernon H. Oswald and Lowell Ahart 1991-8-19 4835 Butte North side of Forest RD 25N15, between Philbrook Reservoir and Coon Hollow 1767 Comment
  CAS-BOT-BC462849  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 Comment
  SEINET178410  Pyrola asarifolia subsp. asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 Comment
  UCD117808  Pyrola picta E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1600 Comment
  CHSC27200  Pyrus P. Moyer 1971-2-1 84 Butte CSUC Campus. E face of Bus.-Soc. Sci. Bldg. 60 Comment
  UC2026890  Quercus Lowell Ahart, Josephine Guardino 2012-10-12 18482 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC94692  Quercus X howellii John Thomas Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SBBG50492  Quercus berberidifolia J. T. Howell 1955-6-15 Butte 6 mi from Paradise on Rd to Pentz 426 Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  JEPS95870  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte about 7 miles (air) north of Oroville; North Table Mountain; 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
  SACT002121  Quercus douglasii Herbert Copeland 1936-8-20 Butte South of Oroville; Rolling hills at edge of Sacramento Valley Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  UC1135615  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-26 93 Butte 1.5 mi nw Nelson's Bar; Chico Quad. 502 Comment
  CAS-BOT-BC104486  Quercus vacciniifolia A. A. Heller 1915-6-10 11957 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  UCD47602  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Road to Table Mtn from Oroville. 293 Comment
  CHSC33971  Ranunculus aquatilis var. capillaceus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte In and along West Branch Feather River, 3.4 mi sw of Snag Lake, ca. 11 mi ne of Stirling City. 1615 Comment
  CHSC31877  Ranunculus aquatilis var. hispidulus L. Ahart 1974-6-3 468 Butte In wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51105  Ranunculus aquatilis var. hispidulus Gerald A. Winter 1989-4-15 6 Butte In stream, ca. 150 yds w of Cherokee Road, on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  CHSC52777  Ranunculus aquatilis var. subrigidus Vernon Oswald 1983-8-4 952 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. In stream in a meadow. 1292 Comment
  CAS-BOT-BC378986  Ranunculus arvensis Lowell Ahart 1980-5-10 2234 Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC37497  Ranunculus bonariensis var. trisepalus J. D. Jokerst; R. A. Schlising 1983-4-9 1711 Butte In the large vernal pool that is ca. 1/4 mile east of the south fork of Coal Cr. Canyon. Top of Table Mountain. 396 Comment
  CHSC1476  Ranunculus canus Edna Caufield 1904-4-1 Butte Richardson Spring Road. 83 Comment
  CHSC52788  Ranunculus canus J. D. Jokerst; M. S. Taylor 1980-2-24 452 Butte Along hillsides at base of rimrock ca 0.5 mi E of Richardson Springs. 243 Comment
  CHSC61608  Ranunculus canus R. M. Austin 1896-4-1 217 Butte [Label illegible] fields. Comment
  SEINET8359672  Ranunculus canus A. Heller 1926-3-31 13916 Butte Nelson, 14 miles S of Chico. Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  UCD96844  Ranunculus occidentalis P. Thompson 1996-4-26 42 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  JEPS123886  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  SEINET13946291 Image available Rhamnus californica A. A. Heller 1915-1 11882 Butte Canyon of Chico creek 5 miles east of Chico Comment
  CHSC30898  Rhamnus ilicifolia M. S. Taylor 1979-3-19 1931 Butte In vicinity of Pulga Bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  POM219424  Rhamnus rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. 1650 Comment
  RSA712802  Rhamnus rubra L. P. Janeway 2005-6-26 8434 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  UC80127  Rhamnus rubra Mrs. M. Austin Jun 1896 642 Butte n of Chico (Forest Ranch and mountains) Comment
  CHSC27307  Rhamnus tomentella subsp. tomentella T. B. Devine 1977-5-22 388 Butte N side of Pine Creek under Sycamore. % mi e of Hwy 99. 121 Comment
  CHSC37651  Rhamnus tomentella subsp. tomentella T. B. Devine 1981-8-25 753 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CAS-BOT-BC199746  Rhododendron occidentale var. californicum Javier Penalosa 1962-6-18 2457 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC19950  Rhus aromatica M. S. Taylor 1975-3-10 417 Butte Ca. 25 ft s of Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC38259  Rhus aromatica Vernon Oswald 1983-5-23 534 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 Comment
  CHSC84696  Rhus ovata Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between an un-used parking lot along Oroville Dam Blvd. and the Palermo Canal, 1460 ft west of the southeast end of Oroville Dam. 182 Comment
  SEINET10454079  Rhus trilobata Mary Susan Taylor 1975-3-10 Taylor 417 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  RSA726311  Rhynchospora capitellata L. Ahart, L. P. Janeway, L. Hanson 2007-7-10 14278 Butte About 250 yards east of Bean Creek Road, northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville. 1025 Comment
  UC478513  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow Jonesville 1800 Comment
  CHSC20051  Ribes roezlii M. S. Taylor 1975-4-25 496 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  JEPS27767  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte forest near DeSabla 853 Comment
  CHSC104012  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 376 Comment
  JEPS117533  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 376 Comment
  UC177588 Image available Ribes viscosissimum H. M. Hall 1914-7-27 9788 Butte Big Summit of Humboldt Road Sierra Nevada Mountains 2042 Comment
  SEINET13711417  Rorippa curvisiliqua Lowell William Ahart, Lowell William Ahart 1999-1 8155 Butte 12 Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC51253  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-10-3 6612 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  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
  CHSC69715  Rorippa curvisiliqua var. orientalis Lowell Ahart 1997-10-24 7937 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  JEPS103337  Rorippa curvisiliqua var. orientalis Lowell Ahart 2002-10-17 9987 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  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
  CHSC109085  Rosa banksiae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17869 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC102956  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  RSA754877  Rosa californica L. Ahart 2009-6-19 15942 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 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
  CAS-BOT-BC148125  Rosa gymnocarpa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  SEINET10483515  Rosa gymnocarpa Mary Susan Taylor 1979-10-5 Taylor 2225 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC38650  Rosa multiflora Vernon Oswald 1983-5-11 464 Butte Upper Bidwell Park, Chico, along the s bank of Chico Creek ca. 1000 ft. e of the footbridge at Five Mile Recreation Area. 83 Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CAS-BOT-BC33702  Rosa pisocarpa subsp. ahartii Barbara Ertter; Lowell Ahart 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road 655 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  UC1862495  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 b Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CHSC113535  Rotala ramosior Lowell Ahart 2014-9-23 19866 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  UC1586509  Rotala ramosior Vernon H. Oswald and Lowell Ahart 1991-8-28 4849 Butte 3.5 mi nw of Biggs (Rice Experimeent Station on s side of Highway 162); Rice Experimeent Station, Highway 162 30 Comment
  CDA31997  Rubus armeniacus L. Ahart 2008-5-23 15771 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC37663  Rubus armeniacus T. B. Devine 1981-9-3 769 Butte In dry or drying mud at edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC45822  Rubus armeniacus L. P. Janeway 1987-6-5 2150 Butte Along Peavine Cr near mouth of Coon Cr and where the Peavine Cr rd crosses. 746 Comment
  SEINET10483578  Rubus laciniatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10483593  Rubus parviflorus Mary Susan Taylor 1976-5-5 Taylor 1112 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC52127  Rubus ursinus L. P. Janeway 1987-5-10 2050 Butte Along rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. At edge of pond in bend of rd. 853 Comment
  CHSC4724  Rumex acetosella R. Carter 1966-4-21 358 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing along roadside on E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 Comment
  SEINET10479438  Rumex dentatus subsp. klotzschianus Mary Susan Taylor 1982-4-28 Taylor 4369 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  UCD150347  Rumex persicarioides Harry A. George 1971-7-17 s.n. Butte Gray Lodge Wildlife Management Area, Field 14. Comment
  CHSC31769  Rumex salicifolius L. Ahart 1974-7-2 507 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC434168  Rumex triangulivalvis Lowell Ahart 1984-6-8 4675 Butte About 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45578  Sagina apetala Lowell Ahart 1975-5-11 752 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS118328  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC46554  Sagina saginoides V. Oswald; L. Ahart 1989-7-21 3873 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
  CHSC23688  Sagittaria latifolia K. Stern 1970-6-1 Butte Growing in ditch in Rancho Llano Seco. Comment
  CHSC43287  Sagittaria montevidensis subsp. calycina Lowell Ahart 1987-10-20 5918 Butte Rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS119845  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southeast of 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. Comment
  SEINET11991647  Salix gooddingii var. variabilis J. D. Jokerst 1982-1 1543 Butte Grey Lodge Waterfowl Man. Area, along road running N of Rutheford Rd to N Comment
  SEINET10539215  Salix hindsiana Mary Susan Taylor 1975-10-3 Taylor 935 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  SEINET10539216  Salix hindsiana Lowell Ahart 1984-6-8 Ahart 4676 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC65011  Salix laevigata Vernon Oswald 1987-3-26 2298 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. 73 Comment
  CHSC79567  Salix laevigata G. F. Hrusa; T. D. Wilfred 1997-5-1 13714 Butte Northern California. The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  CHSC108872  Salix lasiolepis Lowell Ahart 2012-2-22 17749 Butte Around the edges of the pond and on the east side of South Rim Trail, at the old homestead, about 5/8 miles west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  JEPS119536  Salix lasiolepis Lowell Ahart 2012-2-22 17750 Butte About 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  JEPS119616  Salix lasiolepis Lowell Ahart 2012-4-9 17830 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129576  Salix lasiolepis var. lasiolepis John Thomas Howell; Gordon H. True 1969-4-8 45487 Butte Near Pulga Bridge west of Pulga - Sierra Nevada 411 Comment
  CHSC9695  Salix lasiolepis var. lasiolepis E. L. Smith 1971-9-12 1067 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC478537  Salix ligulifolia E. B. Copeland 1931-6-9 305 Butte in meadow near head of N. Willow Creek Jonesville 1550 Comment
  LA208870  Salix melanopsis E. B. Copeland; 1931-6-10 sn Butte by Butte Creek; Jonesville 1500.0 Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  CAS-BOT-BC125949  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  CHSC113494  Salix scouleriana Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 mile west of Philbrook Reservoir. 1648 Comment
  CHSC52066  Salvia columbariae R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yds W of road. 419 Comment
  CHSC81480  Sambucus mexicana Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe lake in Upper Bidwell Park 500 yards away from Big Chico Creek. 91 Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  CHSC61636  Sambucus racemosa var. microbotrys Lowell Ahart 1993-9-8 7163 Butte About 1 mile east of Snow mountain. 2072 Comment
  CHSC12398  Samolus parviflorus Lowell Ahart 1973-6-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28872  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte On w end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC3478  Sanicula bipinnata Roger Jaegel 1966-3-21 87 Butte Located three miles east of the Highway 99 intersection on Pentz Road. Comment
  CHSC8623  Sanicula bipinnata D. Patten 1968-3-4 59 Butte Collected 1 1/2 mi. se of Chico along Skyway. 91 Comment
  UC600515  Sanicula graveolens H. F. Copeland 1932-7-16 Butte a little W of the summit Jonesville Comment
  CHSC60574  Sanicula tracyi Vernon H. Oswald; Lowell Ahart 1993-4-19 5278 Butte Rattlesnake Creek Trail from JordanHill Rd. to Sawmill Pk. Lookout, ENE of Magalia. 701 Comment
  CHSC32662  Sanicula tuberosa M. S. Taylor; L. Hanson 1981-3-16 3414 A Butte Embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC64407  Sanicula tuberosa B. Castro; L. Janeway 1994-7-6 523 Butte Ca 1.5 air mi ENE of Feather Falls (the falls), ca 1 mi W of Jackson Ranch, on main E-W ridge, a few yards off S edge of USFS Rd 21N25Y. 1143 Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  POM219371  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Near Jones Creek Comment
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
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May 5 2015
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  CHSC96827  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  UCD117995  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  CAS-BOT-BC436857  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC43658  Scabiosa atropurpurea Vernon Oswald 1983-7-24 907 Butte Boat ramp, Bidwell State Park, on River Rd. w of Chico near the washout. Comment
  CHSC2824  Scandix pecten-veneris David Prall 1965-4-25 32 Butte South side of Humbug Rd. 0.3 miles west of junction with Honey Run rd. (covered bridge). 198 Comment
  UCD128129  Scandix pecten-veneris W. R. Powell 1968-5-16 1506 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CAS-BOT-BC111653  Schoenoplectus mucronatus Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland. Comment
  CAS-BOT-BC111661  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 miles west of Biggs. Comment
  UCD49966  Schoenoplectus mucronatus W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  CHSC56804  Scirpus congdonii L. P. Janeway 1988-7-2 2947 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi south of 'town' of Brush Creek. 952 Comment
  CHSC78321  Scirpus congdonii Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of 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
  CAS-BOT-BC5833  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CAS-BOT-BC239962  Scribneria bolanderi Lowell Ahart 1985-5-15 4971 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  SEINET3450761  Scribneria bolanderi Unknown 2003-5-18 10180 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut 40 Comment
  UC768855  Scribneria bolanderi R. F. Hoover 1936-5-21 1159 Butte 3 mi n of Chico Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  CHSC55501  Scutellaria californica L. P. Janeway 1991-6-8 3994 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville high water mark. 377 Comment
  CHSC62752  Scutellaria californica L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4356 Butte About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. 381 Comment
  CHSC23467  Sedella pumila J. R. Lee 1974-4-22 3 Butte 15 yards n of the Skyway roadside ca. 6 mi se of the Chico city limits. 152 Comment
  CHSC84128  Sedella pumila Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UC1410123  Sedum spathulifolium H. M. Wheeler 1954-3-12 Butte ne Oroville (Feather Falls on the Fall River); , ne of Oroville 571 Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC8629  Selaginella hansenii L. V. Ritter 1969-3-14 75 Butte Ca 200 yds. E of e boundary of Upper Bidwell Park, 25 yds. n of Chico Creek. Comment
  JEPS116133  Selaginella hansenii Lowell Ahart, John Dittes, Steve Green 2009-1-17 15475 Butte Bottom of cliffs, about 20 yards south of Guardian Rock Trail, near Guardian Rock, about 1/8 mile west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park 335 Comment
  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
  SEINET10530433  Selaginella hansenii Mary Susan Taylor 1979-11-11 Taylor 2289 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC48045  Selaginella wallacei L. P. Janeway 1984-10-7 1178 Butte Big Bald Rock. 975 Comment
  CAS-BOT-BC69726  Selaginella wallacei Lowell Ahart 1979-4-3 s.n. Butte Near N. Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC87779  Senecio aronicoides Paul Maslin 2004-5-6 31 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC84011  Senecio sylvaticus Lowell Ahart 2003-6-23 10308 Butte In a field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC2813  Senecio vulgaris David Prall 1965-3-14 11 Butte Ca 1 yd. south of Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC419  Senecio vulgaris M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC113120  Sequoiadendron giganteum Lowell Ahart 2013-10-26 19206 Butte On the east side of the Bald Mountain Lookout, Bald Mountain. 2066 Comment
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Jul 25 2018
  CHSC48129  Sericocarpus oregonensis Vernon H. Oswald 1985-8-15 1930 Butte Skyway 0.2 mi S of Inskeep. 1463 Comment
  CHSC78791  Sericocarpus oregonensis Lowell Ahart 2000-6-27 8695 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 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-BC364730  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  CDA43366  Sesbania punicea D. G. Kelch 2012-9-19 12 .354 Butte Oroville, immediately west of sewage treatment plant. Comment
  CAS-BOT-BC240121  Setaria pumila John Thomas Howell 1961-9-22 36735 Butte Bank of Feather River, Oroville 53 Comment
  CHSC44428  Sherardia arvensis Lowell Ahart 1988-6-23 6074 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC70854  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CHSC43351  Sidalcea calycosa Lowell Ahart 1979-5-7 1860 Butte Along and near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC48609  Sidalcea calycosa Vernon H. Oswald 1984-4-1 1113 Butte Humboldt Rd, about mid-way between El Monte and Bruce roads, Chico. 79 Comment
  SEINET7067152  Sidalcea calycosa A. G. Vestal 1947-4-30 s.n. Butte Lava field on Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 624251mE, 4380083mN. Comment
  RSA325176  Sidalcea calycosa subsp. calycosa M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC100866  Sidalcea gigantea B. Castro; David Toren 2005-7-21 1520 Butte Ca 9 air mi NE of Paradise, and 2.5 mi NE of Flea Mtn, at the crossing of Lockerman Ck by USFS Rd 24N13. Ca 200 ft from W edge of ck. 950 Comment
  UCD116651  Sidalcea glaucescens H. F. Copeland 1930-7-20 s.n. Butte Jonesville. 1524 Comment
  CHSC13720  Sidalcea hartwegii J. G. Moore 1969-5-5 145 Butte Hwy. 70, 3 mi. S of Oroville. Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  CHSC52446  Sidalcea hartwegii Denise Monceau 1984-4-11 12 Butte Ca 5 mi from hwy 99; jct of Honey Run and Humbug Roads. SE side of road. 106 Comment
  UC871514  Sidalcea hartwegii A. A. Heller 1914-4-16 11298 Butte 2 mi from Chico; 2 mi from Chico Comment
  UC108886  Sidalcea hartwegii Mrs. R. M. Austin June 1883 Butte near Chico; near Chico Comment
  UCD14891  Sidalcea hartwegii Petra Heuer 1991-4-27 1006 Butte California, Butte Co.; 1 km south of Peredise 365 Comment
  CHSC1047  Sidalcea hirsuta F. Johnson 1937-5-20 Butte Near old radio transmitter on Madrone St. 57 Comment
  CHSC38552  Sidalcea hirsuta Vernon Oswald 1983-5-22 527 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. and 50 ft e of the road to the North Rim Trail. 91 Comment
  HSC38066  Sidalcea malviflora Thomas W. Nelson, Jane Nelson 1976-5-10 2474 Butte Beside Hwy. 191, 4 mi. W of Paradise Comment
  CHSC23379  Silene antirrhina R. A. Schlising 1974-6-4 3137 Butte 9.9 mi NE of Chico, along Hwy 32. Comment
  UC852813  Silene californica Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  RSA477840  Silene californica M. M. Boney 1897-1 1724 Butte [Unspecified] Comment
  CHSC33521  Silene douglasii R. Schlising 1981-6-28 4114 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on Table Mountain. 1828 Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC478524  Silene douglasii E. B. Copeland 1931-6-19 634 Butte near the Summit (Jonesville); Jonesville 2100 Comment
  CHSC48266  Silene douglasii var. douglasii Vernon H. Oswald 1983-8-17 Butte Trail between Humboldt Summit and Humboldt Peak, ca. 3.3 mi ne of Jonesville. 2023 Comment
  CAS-BOT-BC389010  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC31133  Silene laciniata subsp. californica Herb Allan McLane 1980-4-9 4 Butte 10 ft n of Ponderosa Way, Plumas National Forest. 402 Comment
  UCSB63726  Silene laciniata subsp. californica 1986-4-19 Butte 11.5 m. N of Chico Municipal Airport on Cohasset Hwy. 853 Comment
  CHSC91476  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  SEINET7073605  Silene noctiflora A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road about 8 miles east of Chico. UTM Zone 10, 613369mE, 4399651mN. Coordinate datum: NAD27. Comment
  CHSC38388  Silybum marianum Vernon Oswald 1983-4-18 329 Butte Upper Bidwell Park, Chico, on the north slope w of Horseshoe Lake. Beside an old jeep trail. 109 Comment
  CHSC96802  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 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
  POM107996  Sisyrinchium bellum C. C. Bruce 1897-04 2069 Butte Near Pentz Comment
  UCD138835  Sisyrinchium bellum Richard H. Ramsey 1961-5-13 52 Butte 2 miles south of Berry Creek on Oroville - Quincy road. Comment
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC92478  Solanum americanum Lowell Ahart 2005-11-20 12492 Butte On the east side of the North Fork of the Feather River, about 50 yards southwest of the Poe Power House. 275 Comment
  CHSC67398  Solanum parishii James D. Jokerst; R. A. Schlising 1985-4-8 2226 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  UCSB63941  Solanum parishii Lorenz, Thomas 1972-4-23 Butte 7.6 mi 8 of highway 99E overpass and 20 ft below high 32 Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CAS-BOT-BC157055  Solanum umbelliferum H. M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC365384  Solidago elongata Lowell Ahart 1986-8-15 5385 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  JEPS117269  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 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
  CHSC117004  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 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
  CHSC46401  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte Near a stream, west of the dirt road, west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC35221  Sorbus scopulina M. S. Taylor 1981-5-13 3706 Butte Jct of 23N15.5, 22N66X, and 22N40, ca. 2 air mi s of Four Trees Rd, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Shy. 1280 Comment
  CHSC4360  Sorghum halepense M. Hiller 1966-5-29 Butte In creek bed parallel to Manzanita Ave., Chico. Comment
  RSA722694  Sorghum halepense R. R. Halse 2006-8-2 6982 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET8408351  Spartium junceum Richard R. Halse 2006-8-3 6987 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road. 1000 Comment
  CAS-BOT-BC389943  Spergula arvensis Lowell Ahart 1980-3-22 2047 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS114711  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC37437  Spergularia bocconi R. A. Schlising 1982-5-18 4242 Butte Richvale Vernal Pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  RSA0097920  Spergularia bocconi L. Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards SE of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10833470  Spergularia marina Mary Susan Taylor 1982-4-28 Taylor 4348 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC40005  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Found on bank of small wash, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  CHSC45807  Spiraea douglasii L. P. Janeway 1988-7-2 2940 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC88165  Spiraea douglasii Lowell Ahart 2004-8-2 11331 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CDA2510  Sporobolus indicus L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  UC426944  Stachys ajugoides var. rigida E. B. Copeland 1930-7-20 451 Butte Jonesville 1500 Comment
  CHSC102960  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
  UC128776  Stachys pycnantha Miss Kate Conger 1907-1 Butte Brush Creek. Comment
  CHSC61787  Stellaria crispa Lowell Ahart 1993-10-3 7268 Butte At a spring, on the south side of the west branch of Wildcat Creek, about 2 miles north-east of Coyote Gap. 1402 Comment
  SEINET11934433  Stellaria crispa L. Ahart, Ahart, P. 1984-1 Butte About 1.5 mi SE of Bald Mt., 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC11852  Stellaria longifolia E. B. Copeland 1931-1-1 638 Butte Jonesville. In meadows. 1500 Comment
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May 18 2006
  SEINET10537521  Stellaria media Mary Susan Taylor 1975-3-25 Taylor 426 Butte Chico. Comment
  CHSC40649  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC45566  Stellaria nitens Lowell Ahart 1985-3-24 4862 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 518 Comment
  CHSC96226  Stellaria nitens R. Fischer 2006-4-25 973 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CAS-BOT-BC398214  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS99035  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC51043  Stephanomeria exigua subsp. macrocarpa Vernon Oswald 1983-10-2 1049 Butte Upper Bidwell Park, Chico, on the north rim about half way between the heads of the intermittent streams which flow into Sycamore Creek. 347 Comment
  CHSC61301  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte On the west side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CAS-BOT-BC375659  Stephanomeria paniculata John Thomas Howell 1951-6-26 27514 Butte Feather River Canyon 213 Comment
  CHSC116153  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte On the west side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  UC1586575  Stephanomeria paniculata Lowell Ahart 1991-8-25 6704 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. 1097 Comment
  JEPS122071  Stipa occidentalis var. californica Lowell Ahart 2014-7-13 19655 Butte About 40 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 40 yards to the ridge, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET10508406  Stipa stillmanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4190 Butte T23N R4E ne sec 4. Ca. 1.5 mi se of Stirling City along road. Yellow Pine Forest; 1100 m. 1100 Comment
  HSC103798  Streptanthus L. Ahart 2006-7-16 12958 Butte North side of Humboldt Road, ~1.5 mi. air miles SW of Butte Meadows. 1436 Comment
  CHSC102019  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte Northern High Sierra Nevada. 1.6 air mi north of Jarbo Gap; 0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest clearing under powerlilnes, about 1/3 of the way down the steepest part of the slope. 853 Comment
  CHSC39964  Streptanthus longisiliquus L. Ahart; P. Ahart 1983-6-30 4187 Butte Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. 1100 Comment
  CHSC97330  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte +- 0.8 km north of Robley Point. 938 Comment
  JEPS118610  Streptanthus longisiliquus Matt Simenc, Sarah Starkey and Tim Hanson 2010-7-8 s.n. Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles south