Search Results — 2000 specimen records retrieved (1608 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC45838  Abies concolor Lowell Ahart 1984-4-26 4812 Butte South fork of Feather River, near the new bridge, about 1 mile north of Golden Trout Crossing, about 10 miles east of Feather Falls. 975 Comment
Read comments
Apr 30 2014
  UC1192282  Abutilon theophrasti Herbert L. Mason and Verne Grant 1946-9-4 13105 Butte Colusa Gun Club Butte Sink Comment
  CHSC110871  Acer circinatum Tim Hanson 2013-9-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 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
  CHSC99657  Acer macrophyllum H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  SEINET10904839  Achillea millefolium var. lanulosa Lowell Ahart 1985-5-15 Ahart 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. 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
  CHSC95032  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  POM196134  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  JEPS94313  Achnatherum occidentale subsp. occidentale Lowell Ahart 1997-8-1 7790 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, e of Little Kimshew Creek, e of Snow Meadow) 1524 Comment
  SEINET221365 Image available Achnatherum stillmanii Lowell Ahart 1980-9-10 Butte Little Bald Rock 1100 Comment
  CHSC113810  Achyrachaena mollis M. Ocken 2011-5-2 Butte Cottonwood Rd. Collected from roadside in open country just outside fenced cattle grazing area. 57 Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CHSC10653  Acmispon americanus var. americanus Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC90380  Acmispon brachycarpus Lisa J. Newsum 1984-4-19 19 Butte Bidwell Heights Rd., 1 1/4 from jct. with Hwy 32, 7 mi e of Chico. 304 Comment
  JEPS127022  Acmispon brachycarpus Lowell Ahart 2016-6-4 20921 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  SD48505  Acmispon grandiflorus var. grandiflorus E. K. Balls 1957-5-22 22513 Butte North fork Feather River, above Camp Rogers, on trail to Buck's Lake. 655 Comment
  CHSC33561  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-4 3593 Butte SW of 21N80, s side of spur rd near plantation, ridge south of Galen Ridge, sa. 3 mi sw of Brush Creek. 914 Comment
  CHSC6600  Acmispon grandiflorus var. macranthus G. Estrem 1968-4-23 2 Butte Ca. 20 mi e of Oroville on hwy. 70. Ca. 100 yds. s of road on n facing slope. Comment
  CHSC113918  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC98960  Acmispon parviflorus Lowell Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC52673  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 348 Butte NW of Philbrook Reservoir, near streamlet. 1798 Comment
  UC203816  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC65618  Adiantum jordanii Lowell Ahart 1983-7-29 4236 Butte about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC9263  Adiantum jordanii D. C. Burns 1971-4-9 129 Butte Abundant ca. 1 mi e of the intersection of Manzanita Ave. and Centennial Ave. (lower Big Chico Creek Canyon, called the fern banks). 82 Comment
  CHSC30288  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD51568  Aegilops triuncialis James Mallory 1967-6-14 269 Butte 10 miles s.e. Chico near jct. Pentz and Williams Road. Comment
  CHSC3857  Aesculus carnea Gary Dutton 1966-4-13 205 Butte Found in front of CSC Aud. Comment
  CHSC65323  Agoseris glauca var. monticola Lowell Ahart 1995-10-3 7669 Butte Along the north side of Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. 1767 Comment
  UC891241  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  UC57397  Agoseris heterophylla var. heterophylla H. E. Brown Apr 15 1897-Apr 30 1897 300 Butte near Clear Creek 53 Comment
  CHSC116333  Agrostis avenacea Lowell Ahart 2015-10-20 20564 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC87216  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 35 Comment
  HSC96918  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, 12 mi. SE of Oroville 35 Comment
  CAS-BOT-BC127327  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC127330  Agrostis exarata H. F. Copeland 1920-8-12 122 Butte Jonesville Meadow. 1219 Comment
  CAS-BOT-BC127331  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  UCD52304  Agrostis exarata August L. Hormay 1929-7-24 s.n. Butte 3 miles North of Pulga. Comment
  UCD52371  Agrostis exarata P. B. Kennedy 1920-8-9 X 3098 Butte Chico, Field - Campus - Berkeley. Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CAS-BOT-BC139718  Agrostis gigantea Lowell Ahart 1981-8-15 3045 Butte Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  JEPS116027  Agrostis gigantea Lowell Ahart 2009-7-9 16006 Butte On the east side of a 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
  CHSC43171  Agrostis idahoensis Robert Banchero 1981-7-18 601 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. 1749 Comment
  UCD53000  Agrostis idahoensis August L. Hormay 1929-8-19 s.n. Butte Philbrook, near Graham Mine. Comment
  CAS-BOT-BC138849  Agrostis microphylla Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC93479  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS110399  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC600600  Agrostis scabra E. B. Copeland Jul 1929 Butte woods across Jones creek Jonesville 1550 Comment
  CHSC28544  Agrostis stolonifera M. S. Taylor 1978-7-18 1676 Butte On w side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC38781  Agrostis stolonifera Vernon Oswald 1983-6-27 767 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the Diversion weir. 79 Comment
  JEPS117641  Agrostis variabilis Lowell Ahart 2010-9-28 17257 Butte On damp black soil, about 20 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
  UCD53711  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte Locally abundant at the summit east of Jonesville. The type was collected in the Yellowstone Park. 2133 Comment
  CAS-BOT-BC48024  Ailanthus altissima John Thomas Howell 1980-5-28 53713 Butte Honcut Creek on road from Oroville to Marysville. 30 Comment
  CHSC36404  Aira caryophyllea Kirsten Tarp 1982-3-22 93 Butte 1 mi e of jct Hwy 149 and 99 on 149, ca. 13 mi se of Chico. 57 Comment
  CHSC6154  Aira caryophyllea E. Parreno 1968-4-19 68 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  SEINET7067154  Aira caryophyllea A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  CDA43078  Albizia julibrissin L. P. Janeway 2011-7-7 10503 Butte Sacramento Valley.; Near edge of water, south side of Feather River just east of Bedrock Park, Oroville. Comment
  CDA38802  Alisma triviale L. Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  RSA0037497  Alisma triviale Lowell A. Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 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
  SD6421  Allium acuminatum Mrs. R. M. Austin 1883-1 Butte No further location information on label. Comment
  CHSC2059  Allium amplectens P. Delaplane 1965-4-6 58 Butte Ca. 3/4 mi above turnoff to Richardson Springs Rd. on Cohasset Rd. Comment
  CHSC31524  Allium amplectens L. Ahart 1975-5-12 763 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC460728  Allium amplectens Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  CHSC46417  Allium campanulatum Lowell Ahart 1989-5-29 6319 Butte Just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  JEPS108586  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop 927 Comment
  RSA337392  Allium membranaceum Lowell Ahart, P. Ahart 1984-6-10 4698 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SEINET10872298  Allium membranaceum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4698 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC46070  Allium obtusum var. obtusum J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1781 Butte At the summit of Bald Rock Dome (Middle Fork Feather River) at its south edge. Comment
  CHSC36949  Allium peninsulare P. D. Nelson 1979-4-25 Butte Ca 150 ft s of Bidwell Park Rd at Salmon Hole, ca 9 mi e of California State University Chico. Ca. 30 ft n of Big Chico Creek. 152 Comment
  CHSC84890  Allium sanbornii var. sanbornii R. D. Fischer; Jenny Marr 2003-8-3 1 Butte Sierra Nevada foothills, Big Chico Creek Ecological Reserve. On the east side flood plain of Big Chico Creek at southern end of reserve, approx. 300 ft north of Bidwell Park boundary. 243 Comment
  UC1133834  Allium sanbornii var. sanbornii P. L. Johannsen 1936-7-29 970 Butte 1 1/2 mi n Junction of Butte and Secret Creeks; Paynes Creek Quadrangle Comment
  SEINET10496943  Allophyllum divaricatum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4258 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC47975  Alnus incana subsp. tenuifolia Vernon Oswald 1984-7-31 1642 Butte Scotts John Creek at 26N27. 1755 Comment
  JEPS104335  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, ca 50 yd e of the drain ditch, ca 20 yd n of Hamilton Rd, ca 3/8 mi e of Riceton Highway, ca 10 mi sw of Oroville. 29 Comment
  JEPS114590  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 217 Comment
  SEINET3450790  Alopecurus carolinianus Unknown 2003-3-31 10030 Butte Oroville, Oroville, about 10 miles southwest, about 3/8 miles east of Riceton highway, about 20 yards north of Hamilton Road, about 50 yards east of the drain ditch, landplained rice field 20 Comment
  SEINET10790510  Alopecurus carolinianus Lowell Ahart 1990-4-15 Ahart 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S6. Foothill woodland (destroyed). Carolina Foxtail. 290 Comment
  CAS-BOT-BC137938  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  CHSC31004  Amaranthus albus M. S. Taylor 1978-9-8 1888 Butte Along flood control slough, ca. 4 mi. n of Chico, on Hwy 99. 60 Comment
  UC1562275  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  CHSC47964  Amaranthus deflexus Vernon Oswald 1983-10-10 1062 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. The Indian Fishery at the jct. Of W. Sacramento Ave and River Rd. Comment
  UC1562412  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte about 2 1/2 mi NE of East Gridley ( along the edges of Palm Avenue, about 1/12 [sic] mile E of Larkin Road) 30 Comment
  CHSC21137  Amaranthus retroflexus M. S. Taylor 1975-10-3 930 Butte Along slough near bridge over river rd, ca. 10 mi w of Chico. 36 Comment
  CDA3289  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte ca. 6 miles west of Chico. 0 Comment
  CDA36704  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  RSA688938  Ammannia coccinea L. Ahart 1986-11-9 5442 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  UC1178281  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-18 678 Butte about 2 mi n Chico Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  RSA712999  Amsinckia intermedia L. Ahart 2006-4-23 12532 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 424 Comment
  UCD119273  Amsinckia intermedia Francia Chisaki; R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte Western section of town near the road above the gorge, Paradise. Comment
  CHSC33135  Amsinckia menziesii J. D. Jokerst 1980-4-17 604 Butte Top of Table Mt, - N of Cherokee Rd. 426 Comment
  CHSC3312  Anagallis arvensis M. Gregg 1966-3-21 52 Butte On Pentz Rd. approx. 1 mile east of Clark Rd. At a pond at the foot of the hill. Comment
  CHSC41361  Anagallis arvensis R. A. Schlising 1983-5-15 4407 Butte Richvale Vernal Pools; 0.25 mile S of junction Highway 162 to Oroville with Highway 99, along the latter and across from Thermalito Afterbay. In largest pool. Comment
  SEINET10940260  Anagallis arvensis Mary Susan Taylor 1982-4-28 Taylor 4362 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC44895  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 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
  CHSC31898  Anethum graveolens L. Ahart 1975-7-7 854 Butte In garden on good soil; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42569  Angelica californica Vernon Oswald 1985-6-6 1813 Butte Near Centerville Flume 0.5 mi downstream from its crossing on Humbug Rd. 341 Comment
  HSC71487  Angelica californica J. M. DiTomaso 1980-8-28 1952 Butte 2 mi W of Paradise on Honey Run Rd. 457 Comment
  CHSC65533  Antennaria argentea L. P. Janeway 1995-6-1 4769 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
  CHSC51846  Anthriscus caucalis Kim Haas 1988-4-19 14 Butte Small population ca 10 mi NE of Chico Municipal Airport. 457 Comment
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC42964  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1987-7-3 5787 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC859110  Aphanes occidentalis A. A. Heller 1916-4-13 12324 Butte e of Chico (Stilson canyon) Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC54305  Aphyllon epigalium subsp. epigalium Vernon H. Oswald; Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 170 Comment
  POM196106  Aquilegia formosa var. truncata E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 Comment
  POM366932  Aquilegia formosa var. truncata L. Ahart, P. Ahart 1984-6-10 4703 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC108826  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC90946  Arabidopsis thaliana Lowell Ahart 2005-4-18 11742 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
  SEINET10448239  Arabis glabra Mary Susan Taylor 1979-5-4 Taylor 1993 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC13800  Arbutus unedo M. S. Taylor 1974-11-22 334 Butte In President's back yard, California State University, Chico, campus. Comment
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  JEPS82738  Arceuthobium campylopodum Wayne Roderick 1983-7-23 Butte near old rr station Magalia Comment
  UC42907  Arceuthobium campylopodum E. B. Copeland 1930-7-28 Butte Jonesville 1550 Comment
  UC463034  Arceuthobium campylopodum E. B. Copeland 1931-8-5 Butte Jonesville 1500 Comment
  UC600692  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  RSA629064  Arctostaphylos Jon E. Keeley 1983-6-27 7818 Butte Highway 70 and Magolia Pentz Road. Comment
  UCD52161  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51089 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CAS-BOT-BC24295  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte About 2 mi. w. of Forest Ranch. Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  UC481538  Arctostaphylos nevadensis H. F. Copeland 1930-7-28 Butte along So. Willow Creek Jonesville 1828 Comment
  CAS-BOT-BC46714  Arctostaphylos patula H. F. Copeland 1928-5-6 223 Butte Jonesville. 1524 Comment
  UCD51933  Arctostaphylos truei John Thomas Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  UCD51948  Arctostaphylos truei John Thomas Howell 1975-6-15 51086 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD51952  Arctostaphylos truei John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County, Transition Zone. 609 Comment
  UCD52627  Arctostaphylos viscida R. R. Kehlor 1951-4-14 25 Butte Foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road, Butte County, California. Comment
  CHSC88605  Arctostaphylos viscida subsp. pulchella H. Gray 2003-3-11 15 Butte Plumas National Forest. 731 Comment
  CAS-BOT-BC47373  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51086 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC109106  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC400434  Aristolochia californica John Thomas Howell; Gordon H. True 1969-4-9 45493 Butte About 5 miles north of Pentz on road to Magalia Comment
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  CHSC30863  Aristolochia californica J. D. Jokerst 1979-3-23 1159 Butte Top of North Table Mt., W edge of Mt, immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
  POM165725  Aristolochia californica E. B. Copeland 1903-4-10 s.n. Butte Chico Comment
  UC650550  Aristolochia californica Mrs. C. C. Bruce March 1897 1794 Butte Little Chico Comment
  UCD137823  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  UC84122  Arnica dealbata R. M. Austin July 1896 790 Butte Colby Comment
  CHSC28531  Artemisia douglasiana M. S. Taylor 1979-9-28 2198 Butte At Butte County line at Hwy 70, between boundry and Arch Rock Tunnel. 487 Comment
  CHSC42994  Artemisia douglasiana Lowell Ahart 1987-7-3 5760 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  CAS-BOT-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  HSC73112  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Crossing 20N15 Lumpkin Ridge Rd., 1.9 mi. W of Golden Trout Crossing on S Fork Feather River 5 air mi. E of Feather Falls 1098 Comment
  CHSC40363  Asclepias cordifolia Lowell Ahart 1985-6-17 5063 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
  UC1123539  Asclepias fascicularis A. E. Wieslander 1933-10-12 345 Butte Durham Chico Quadrangle Comment
  CHSC28626  Aspidotis densa M. S. Taylor 1979-3-19 1926 Butte In vicinity of Pulga bridge over Hwy 70 over Feather River, ca. 25 mi ne of Oroville. 487 Comment
  CHSC60939  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC99218  Aster M. S. Taylor 1975-10-31 985 Butte Ca. 10 ft. n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico 152 Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CAS-BOT-BC178470  Astragalus gambelianus John Thomas Howell 1967-6-22 42625 Butte Magalia, Sierra Nevada 701 Comment
  CHSC103968  Astragalus gambelianus Lowell Ahart 2010-5-7 16611 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  JEPS119575  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC178461  Astragalus gambelianus Lowell Ahart 1985-3-22 4847 Butte 1/2 North-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 Comment
  SEINET10452231  Astragalus pauperculus Mary Susan Taylor 1980-3-15 Taylor 2380 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  SBBG28169  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 Butte Jonesville 1600 Comment
  CAS-BOT-BC17446  Athysanus pusillus Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham. Comment
  SEINET11991658  Athysanus pusillus E. C. Taylor 1975-1 3 Butte ca 10 yds N of Covered Bridge & 20 yds W of Butte Creek, 6.7 mi ESE of Chico 116 Comment
  SEINET10479056  Atriplex argentea subsp. expansa Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5156 Butte T17N R1E sw/sw sec 14. Pennington quad. 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. 65 ft. 20 Comment
  UC1191306  Atriplex heterosperma Herbert L. Mason, Verne Grant 1946-8-14 13034 Butte canal near big pond Sacramento Outing Club (Butte Sink); canal nr big pond on Sacramento Outing Club, Butte Sink Comment
  CAS-BOT-BC172670  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley 35 Comment
  SEINET11935025  Atriplex rosea Unknown 1981-1 3220 Butte Near the entrance to Gray Lodge Waterfowl Mngmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CHSC38788  Avena barbata Vernon Oswald 1982-12-19 29 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC42851  Avena barbata Lowell Ahart 1987-5-6 5548 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC4350  Avena fatua M. Hillier 1966-5-29 Butte Parallel to Manzanita Ave. Chico. Comment
  SEINET10514062  Avena fatua Lowell Ahart 1981-5-24 Ahart 2835 Butte In a farmed field planted to Sierra Oats, on a dry red gravelly soil, on Peter Ahart Ranch, ca. 2.5 mi NE of Honcut. 50 Comment
  JEPS113220  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut 49 Comment
  CAS-BOT-BC98759  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Growing on dry dark soil along the edge of a small wash - Palermo 100 Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  UC1594585  Balsamorhiza deltoidea Vernon H. Oswald and Lowell Ahart 1992-3-24 4891 Butte .2 mi n of, (n side Thermalito Diversion Pool, along 1st stream w of spillway) Burma Rd.; Lake Oroville Recreation Area 76 Comment
  CAS-BOT-BC106429  Balsamorhiza sagittata A. A. Heller 1915-6-16 12026 Butte Summit of the Sierra Nevada above Jonesville, on the summit of a ridge 2133 Comment
  CHSC36681  Barbarea orthoceras R. E. Preston 1982-7-1 321 Butte At side of Humboldt Rd, ca. 1/4 mi s of Humboldt Summit, ca. 2.2 mi n of Jonesville. 1965 Comment
  CHSC88051  Barbarea orthoceras R. D. Fischer; Jenny Marr 2004-5-16 177 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Located n. end of mdw., n. side of rd. 50 ft from branch of Big Chico Creek. 1280 Comment
  CHSC28538  Berberis aquifolium var. dictyota M. S. Taylor; J. D. Jokerst 1979-10-13 2247 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) near bridge over creek, ca. 1 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC66355  Bidens frondosa Vernon H. Oswald 1996-6-20 7833 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 NW corner of Tract 2, Sanctuary II. 33 Comment
  CAS-BOT-BC412960  Bistorta bistortoides H. F. Copeland 1920-8-12 132 Butte Jonesville 1219 Comment
  CHSC45375  Bistorta bistortoides Vernon Oswald 1987-7-13 3114 Butte Near the intersection of a Forest Service road and the sw branch of Butte Creek, ca. 1 mi (air) se of Summit Lake, ca. 1 mi (air) e of Snow Mt, ca. 4.75 mi (air) se of Jonesville. 1853 Comment
  CAS-BOT-BC14290  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  SD1978  Boechera rectissima E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC46318  Bolboschoenus fluviatilis Vernon Oswald 1989-5-15 3767 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In a marshy depression near Butte Creek. 18 Comment
  CHSC45122  Bolboschoenus glaucus Vernon Oswald 1985-5-8 1751 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  CAS-BOT-BC31372  Bolboschoenus maritimus James D. Jokerst 1982-4-29 1544 a Butte Grey Lodge Waterfoul Management Area adjacent to kirt road that is N of Rutherford Rd. Comment
  CHSC63213  Botrychium crenulatum Lowell Ahart 1994-7-24 7516 Butte On the sides of Willow Creek, about 100 yards north of the dirt road, about 1 1/4 miles (air) north of Jonesville. 1615 Comment
  UC1751221  Botrychium minganense Timothy B. Devine 1985-7-7 846 a Butte 2/3 mi NW of Jonesville (beside Willow Creek, about 1/4 mi N of jct with road to Colby Mountain Lookout) 1524 Comment
  UC1751228  Botrychium minganense Timothy B. Devine 1985-7-14 851 Butte beside Jones Creek at jct with Humboldt Road 1615 Comment
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Aug 21 2008
  SEINET10971526  Botrychium multifidum subsp. silaifolium Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4462 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  RSA0101688  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CHSC48894  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  JEPS115834  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles 60 Comment
  CHSC33181  Brassica rapa R. E. Preston 1981-1-20 34 Butte On n bank of Western Canal, ca. 30 m e of Aguas Frias Rd., ca. 18.5 km s of Chico. Comment
  CAS-BOT-BC127677  Brickellia greenei John Thomas Howell 1951-8-19 28159 Butte Serpentine, 2 miles west of Pulga 365 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  JEPS117714  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC145535  Briza minor John Thomas Howell 1962-6-16 37610 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CAS-BOT-BC145536  Briza minor Lowell Ahart 1982-4-29 3391 Butte Sierra Nevada. A little west of the sign in station, Gray Lodge, ca. 12 miles southwest of Gridley. 36 Comment
  SEINET10967591  Briza minor Orme 1980-4-9 Orme 19 Butte Large population, T22N R2E NW1/4 of Sec. 17. 0.8 km on main road through upper Bidwell Park. 1.6 km N of Chico. Found on the edge of a open, rocky field. Soil a loam to sandy loam. 64 Comment
  CAS-BOT-BC482215  Brodiaea californica subsp. californica A. A. Heller 1914-5-11 11389 Butte Hills 8 miles north Oroville Comment
  CAS-BOT-BC482216  Brodiaea californica subsp. californica A. A. Heller 1938-5-22 15106 Butte Plentiful near Chico airport Comment
  POM109929  Brodiaea californica var. californica C. C. Bruce 1897-04 2125 Butte Chico Comment
  POM109907  Brodiaea californica var. californica C. C. Bruce 1897-05 2126 Butte [No locality information provided] Comment
  UCD147862  Brodiaea coronaria Robert E. Preston 2005-6-13 2354 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd. 55 Comment
  SEINET10872217  Brodiaea elegans Lowell Ahart 1983-6-6 Ahart 4028 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  JEPS127076  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3/4 miles (air) northeast of Honcut. Comment
  JEPS5507  Brodiaea minor W. L. Jepson 1934-5-4 16621 Butte 2.5 mi ne Cana Comment
  SEINET189594  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise Sierra Nevada foothills 305 Comment
  UC1303078  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte Butte Meadows Comment
  HSC43122  Brodiaea minor Maralyn O'Meara 1974-4-20 275 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  UCD139154  Brodiaea nana Robert E. Preston 2003-5-11 2129 Butte around 2 miles south of Oroville Airport, on east side of Thermalito Afterbay, along Larkin Road. 30 Comment
  SEINET10472700  Brodiaea pulchella Mary Susan Taylor 1975-3-10 Taylor 408 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
  RSA178621  Brodiaea purdyi A. A. Heller 1928-6-28 14657 Butte At Butte Meadows. Comment
  JEPS120851  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown Comment
  UC1530704  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte about 1 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 50 Comment
  CDA31579  Bromus carinatus T. C. Fuller 1962-7-12 9181 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  JEPS106265  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 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
  SEINET10868335  Bromus commutatus Lowell Ahart 1988-5-30 Ahart 6031 Butte Hairy Chess, On damp disturbed soil, near a seep, about 1/12 mile N of the brige across the North Fork of the Feather River, along Poe Power House Road, about 2 miles SE of Jarbo Gap. 338 Comment
  CHSC52150  Bromus hordeaceus Patricia Collins 1981-4-22 13 Butte Field near the bank of Singer Creek, ca. 21 km n w of Chico. Intersection Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  SEINET10514552  Bromus hordeaceus Lowell Ahart 1962-4-17 Ahart s.n. Butte Valley grassland; Peter Ahart Ranch, Honcut. 46 Comment
  JEPS113792  Bromus japonicus Lowell Ahart 2007-6-3 13976 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
  UCD58983  Bromus madritensis Collector unknown 1951-1 Butte Cherokee. 9.5 miles (in direct line) north of Oroville. 373 Comment
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  CHSC44173  Bromus suksdorfii V. Oswald; L. Ahart 1988-7-26 3626 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2042 Comment
  CAS-BOT-BC161500  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile southwest of the Forbestown Reservoir, about 3.5 miles northeast of Forbestown. 609 Comment
  RSA716560  Bromus tectorum L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek Comment
  CHSC78176  Bulbostylis capillaris Lowell Ahart 2000-6-6 8455 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses oregon Gulch Creek, about 1/4 mile north of the cemetary, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC105533  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC113966  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte Southeast part of a large wet meadow, about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CHSC11059  Calandrinia ciliata var. menziesii Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CDA23938  Calandrinia ciliata var. menziesii A. C. Browne 1951-3-27 Butte 7 miles north of Chico. 0 Comment
  CHSC118552  Callitriche fassettii Lowell Ahart; Emily Meigs Doe 2017-4-1 21388 Butte About 5 yards south of fence, east of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. 343 Comment
  CHSC31554  Callitriche heterophylla var. bolanderi L. Ahart 1973-5-24 228 Butte In a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC103992  Callitriche marginata Lowell Ahart 2010-5-14 16651 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
  CHSC29726  Calochortus albus J. D. Jokerst 1980-4-17 585 Butte Top of North Table Mt, northern tip. 472 Comment
  CHSC76965  Calochortus albus Margie Collins 1894-4-1 Butte Forbestown. Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC7131  Calochortus luteus J. Borgstrom 1969-5-2 22 Butte Ca 6 mi s of Chico on 99E, 20 ft. off of w side of highway. 47 Comment
  CAS-BOT-BC491862  Calochortus luteus Lewis S. Rose 1945-5-12 45047 Butte Richardsons Springs 304 Comment
  CHSC29101  Calochortus monophyllus M. S. Taylor; J. D. Jokerst 1980-4-18 2511 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC90028  Calochortus monophyllus Peggy Fain 1991-4-21 22 Butte Ca. 3 km. E. of Richardson Springs Hotel (N. side Walker Creek, Musty Buck Preserve). 243 Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  RSA32826  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  UCD14851  Calochortus tolmiei Tamara Kan 1991-5-11 13 Butte 21.3 mi. north of the town of Oroville, along Route 70. 670 Comment
  RSA255535  Calycadenia ciliosa Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico Comment
  RSA0037495  Calycadenia multiglandulosa Lowell A. Ahart 2013-7-1 18817 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC12947  Calycadenia oppositifolia K. R. Stern 1974-7-1 5882 Butte Skyway, overlooking Butte Creek Canyon, ca. 2 mi S of Paradise. 335 Comment
  CHSC62711  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. 563 Comment
  UC194208  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Rd. 335 Comment
  SEINET10473675  Calycadenia oppositifolia Mary Susan Taylor 1979-10-13 Taylor 2272 Butte T23N R4E e center sec 29. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 11.1 mi N of its jct with Concow Road, 1.9 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CHSC59105  Calycadenia spicata L. P. Janeway; B. Castro, R. A. Schlising 1992-5-17 4188 Butte Unnamed canyon on the southeast side of Neal Road opposite the upper part of the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. 76 Comment
  RSA724858  Calycadenia spicata B. Castro, L. P. Janeway 2005-6-5 1481 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  UC1971680  Calycadenia spicata 1977-7-5 2030 Butte Old jct of Durham Dayton Hwy with Hwy 99, 4.15 mi E of Durham (= GDC 565) 56 Comment
  CDA10581  Calycadenia truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada; On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Comment
  CHSC30945  Calycadenia truncata L. Ahart 1980-7-4 2449 Butte On a steep hillside ca. 1/2 mi SE of Hurleton. 600 Comment
  CHSC39328  Calycadenia truncata Lowell Ahart 1983-6-26 4153 Butte Along the edge of Ponderosa Way, about 1 1/2 miles southeast of the East Fork of Canyon Creek, about 14 1/2 miles northeast of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  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
  JEPS115584  Calycanthus occidentalis Lowell Ahart 2009-5-23 15747 Butte On the east edge 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
  SEINET5336314  Calyptridium paniculatum K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10830263  Calyptridium umbellatum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4247 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
  CHSC95080  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC27918  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1978-7-19 1728 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  SEINET178480  Calystegia polymorpha E. B. Copeland 1931-7-4 674 Butte Jonesville Comment
  UC2026860  Camellia reticulata Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC43939  Camissonia contorta Vernon Oswald 1988-4-13 3270 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the southeast part of the ranch. 53 Comment
  UC1609310  Campanula prenanthoides Lowell Ahart 1993-9-13 7235 Butte on sides of dry wash near Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  CHSC486  Capsella bursa-pastoris V. Holt 1935-3-20 Butte Chico. 57 Comment
  CHSC11925  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC501  Cardamine californica G. Spurlock 1935-3-19 Butte Salmon Hole on Chico Creek. 152 Comment
  JEPS119569  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC37884  Cardamine oligosperma Lowell Ahart 1983-3-24 3910 Butte Sutter Buttes. East bank of Woodleaf Creek above road, about 0.375 mile southwest of the Forbestown Reservoir. 450 Comment
  CHSC10623  Cardamine oligosperma Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC28635  Cardamine oligosperma M. S. Taylor 1979-3-31 1966 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  SEINET11991665  Cardamine oligosperma M. C. Earley 1982-1 12 Butte ca 11 mi ESE of Chico 112 Comment
  CDA34282  Cardaria chalepensis L. Ahart 2009-4-2 15520 Butte On the east side of Highway 99, about 1 mile south of Gridley. Comment
  CHSC101155  Carduus pycnocephalus Lowell Ahart 2009-5-15 15691 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  JEPS117697  Carex Lowell Ahart 2010-9-21 17204 Butte Open meadow like area in red fir forest, 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
  JEPS121933  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  JEPS121995  Carex angustata Lowell Ahart 2014-7-13 19643 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC18053  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville. 1700 Comment
  POM218977  Carex athrostachya E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1550 Comment
  SD468  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville; about the edges of the Lily Pond, a permanent pool; warm in the summer. 1700 Comment
  UC1594681  Carex athrostachya Lowell Ahart 1992-7-21 6805 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC113504  Carex aurea Lowell Ahart 2014-7-16 19677 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC11936  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC116209  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte Drainage on the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC54113  Carex bolanderi Vernon H. Oswald; Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). On the edge of Palermo Canal. 170 Comment
  CHSC61650  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  CHSC45063  Carex brainerdii Vernon Oswald 1987-6-9 2976 Butte Forest Service Rd. to Snow Mt. which joins Humbug Rd. in the sw quarter of section 21, at a point slightly south of the spur to Summit Lake. 1950 Comment
  CHSC44118  Carex capitata L. P. Janeway 1988-7-29 3111 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC107598  Carex cyrtostachya Lowell Ahart 2011-7-9 17574 Butte Southeast edge of a large open bare granite area, about 3/8 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CAS-BOT-BC34951  Carex densa Lowell Ahart 1980-5-12 2249 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC102837  Carex densa Lowell Ahart 2009-6-3 15816 Butte 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
  CHSC39585  Carex densa Vernon Oswald 1983-6-7 647 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
  CHSC52853  Carex densa L. P. Janeway 1987-5-20 2057 Butte Near Gold Flat and Hodap Creek; jct of Lunt Road and Nelson Bar Road. 457 Comment
  SEINET14378485 Image available Carex densa Lowell Ahart 2009-6-3 15826 Butte About 130 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  SEINET8027659 Image available Carex densa L. Janeway, Gog, L 2008-1 3183 (A & B) Butte Bidwell Park. Comment
  SBBG128721  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte NW of intersection of W Frances Willard Avenue and Arcadian Avenue, one block S of Chico High School, Chico 59 Comment
  CAS-BOT-BC19848  Carex echinata H. F. Copeland 1932-7-17 s.n. Butte Jonesville. Comment
  CAS-BOT-BC20001  Carex feta J. D. Jokerst 1984-5-19 2025 Butte At the edge of Highway 70. Comment
  CHSC43116  Carex fracta L. P. Janeway; Patty Costello 1987-9-5 2576 Butte NW side of Big Chico Cr below the rd to Soda Spr campground and near hwy 32. 1127 Comment
  CHSC43903  Carex fracta L. P. Janeway 1987-5-20 2085 Butte North Fork Feather River. Seep along hwy 70 0.3 mi north of Arch Rock Tunnel. 472 Comment
  CHSC45617  Carex fracta L. P. Janeway; R. A. Schlising 1988-8-1 2914 Butte Vernal pool on the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  JEPS117933  Carex geyeri L. P. Janeway & Linus Gog 2008-7-18 9435 Butte along Humbug Summit Road, above tje Cornelia Lott Sank Memorial Spring (which feeds West Branch Feather River) High Cascade Range 1536 Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC96423  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  SEINET4292193 Image available Carex gracilior Unknown 2006-1 8608 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Oroville Dame 7.5' quad. Comment
  CHSC42828  Carex hirtissima L. P. Janeway 1987-5-10 2045 Butte Mdw at jct of Skyway and Doe Mill Rd/Humbug Rd, just N of Da Sabla Reservoir. 838 Comment
  RSA0037178  Carex hoodii Lowell A. Ahart 2010-9-21 17201 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  SEINET4286036  Carex infirminervia Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir Comment
  JEPS110201  Carex integra Lowell Ahart 2006-7-16 12990 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET4292185 Image available Carex integra Unknown 2006-1 13175 Butte North edge of a wet area west of a large open meadow and bog about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile(air) northwest ofJonesville, about miles(air) northeast of Butte Meadows. Comment
  UC1564775  Carex integra V. Oswald and L. Ahart 1989-6-27 3831 Butte ca. 3.3 air mi se Jonesville (Humbug Rd.); Butte Creek, Butte Creek House 1767 Comment
  CHSC102215  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley. Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. 44 Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  UC600695  Carex jonesii H. F. Copeland June, 1929 Butte Jonesville Comment
  UC689958  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se Butte Meadows; Paynes Creek Quadrangle 1554 Comment
  CHSC42821  Carex lemmonii L. P. Janeway 1987-6-19 2244 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CHSC84921  Carex lemmonii L. P. Janeway 2003-7-13 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 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
  SEINET7568447 Image available Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Kimshew Point 7.5' quad. Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CAS-BOT-BC32154  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, ca 1/2 mi SW of Bardees Bar along N fork of Feather River, 365 Comment
  CHSC52263  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1853 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  JEPS106371  Carex nervina Lowell Ahart 2004-7-23 11297 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. Comment
  CAS-BOT-BC119562  Carex nudata L. P. Janeway 1987-6-20 2257 Butte Clipper Mills quad.S Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 975 Comment
  CAS-BOT-BC119046  Carex pellita Herbert Faulkner Copeland 1920-8-1 174 Butte Jonesville Meadow 1219 Comment
  CHSC42802  Carex pellita L. P. Janeway; C. A. Janeway 1986-8-31 1815 Butte NE side of Philbrook Reservoir, across the rd from the picnic area. 1691 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  CHSC44952  Carex praegracilis L. P. Janeway 1988-6-14 2762 Butte Northwest side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC77822  Carex praegracilis Lowell Ahart 2000-4-27 8331 Butte In the field on the east side of Pennington Road, about 100 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  SEINET10705318  Carex rostrata Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2503 Butte T26N, R4, Jonesville quad (15') SE1/4 of sec.36, Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Gently sloping meadows on N side of the creek. In soggy mossy meadow. Comment
  CAS-BOT-BC117391  Carex senta A. S. Crafts 1976-4-12 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET10749886  Carex straminiformis Vernon H. Oswald, Lowell Ahart 1988-7-29 Oswald 3647 Butte T25N R5E nw/S3, Red Fir Forest. Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Scattered an uncommon in loose gravel on a steep slope along the n brow of the ridge; not strongly tufted. 2073 Comment
  CHSC46990  Carex subfusca S. C. Morey 1983-8-4 703 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC52881  Carex subfusca L. P. Janeway 1989-5-17 3248 Butte Cyn overlook along road to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  RSA4408  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. 1500 Comment
  SEINET7577201 Image available Carex subfusca Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11401 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn. 1535 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
  SEINET10894839  Carex vernacula Lowell Ahart 2010-9-28 Ahart 17264 Butte T25N, R5E, northeast 1/4 Section 29. On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  SEINET6331714 Image available Carex vesicaria H. F. Copeland 1932-8-19 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC113465  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte In a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10478176  Castanea sativa Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7034 Butte Roadside in paradise 792 Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. Comment
  CHSC33126  Castilleja affinis J. D. Jokerst; R. A. Schlising 1981-4-16 1298 Butte S side of Olive Highway 0.3 mi SW of it's junction with Forbestown Road. Comment
  JEPS57366  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1925 Butte about 4 air mi nw Bangor (along Oroville-Bangor road) 182 Comment
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  CHSC114978  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20032 Butte Road cut, on the west side of Rim Road, about 1/4 mile north of Jrbo Gap, about 15 miles (air) north of Oroville. 730 Comment
  CHSC55411  Castilleja applegatei subsp. pinetorum Dennis W. Morris 1991-4-7 12 Butte 9 mi northeast of Chico at Hwy 32 and Crown Point Road; west side of Crown Point Road. 502 Comment
  CHSC55418  Castilleja attenuata L. P. Janway 1991-4-30 3920 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of middle Fork Feather River. 426 Comment
  SFV10458  Castilleja attenuata M. L. Vincent 1964-4-9 532 Butte 1.5 miles south of Pearson Road. 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
  CHSC115321  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1 1/2 miles southwest of the intersection of Robinson Mills Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  CHSC44430  Castilleja lacera Lowell Ahart 1988-6-15 6040 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS46017  Castilleja miniata L. R. Heckard 1956-8-6 823 Butte w of Jonesville (along road, near Butte Creek) 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
  CHSC43948  Castilleja rubicundula subsp. rubicundula Vernon Oswald 1988-4-26 3284 Butte Gray Lodge Waterfowl Management Area, ca. 0.25 mi s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CDA41389  Castilleja tenuis T. C. Fuller 1962-7-12 9170 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC4344  Catalpa bignonioides Carl Pejsa 1967-3-9 19 Butte Bidwell Park Forestry Station. Comment
  CHSC31643  Caulanthus lasiophyllus L. Ahart 1974-4-14 415 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC48811  Ceanothus cuneatus Lowell Ahart 1985-3-4 4845 Butte Near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  CHSC32656  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte Shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CAS-BOT-BC50776  Ceanothus integerrimus Lewis S. Rose 1968-6-12 68112 Butte Feather River Canyon - Pulga 487 Comment
  SACT002930  Ceanothus integerrimus Josephine Van Ess 1974-8-31 Butte Common shrub, some in flower, some in seed. Collected at end of ranch road at the stream. Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  SEINET12210970  Ceanothus integerrimus Unknown 1981-1 14 Butte ca 14 mi E of Chico, 6 mi E of Butte Creek (Covered Bridge) on Honey Run Road, 25 ft from rd. side 168 Comment
  CHSC45726  Ceanothus integerrimus var. californicus Richard Steward 1988-4-25 9 Butte Ca. 6 mi n, 1.8 mi nw of Paradise. 640 Comment
  CHSC1508  Ceanothus integerrimus var. macrothyrsus M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  RSA25681  Ceanothus jepsonii Carl B. Wolf 1941-7-23 11048 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
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May 17 2021
  CHSC30308  Ceanothus lemmonii M. S. Taylor 1980-5-27 2736 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of Big Bald Rock, ca. 4 mi e of Lake Madrone. 975 Comment
  SEINET10903222  Ceanothus lemmonii Mary Susan Taylor 1974-4-28 Taylor 211 Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CAS-BOT-BC52015  Ceanothus prostratus Barbara Trowbridge 1968-5-4 264 Butte Three miles North of Magalia on Magalia-De Sabla Road 762 Comment
  UC1551940  Ceanothus prostratus Aaron Liston 1988-3-15 697 -2 Butte E of Cohasset, Ponderosa Way 500 Comment
  UCD40397  Ceanothus prostratus Rodney Gale Myatt 1971-6-13 730 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  RSA4173  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  CHSC108985  Celtis australis Lowell 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. 80 Comment
  JEPS113265  Centaurea cyanus Lowell Ahart 2007-5-16 13893 Butte Between the road to Bear Ranch Creek and Highway 70, north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  JEPS87515 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
  CDA35494  Centaurea maculosa Ed Finley 2006-6-26 PDR# 1365082 Butte Paradise; Edgewood Lane. 0 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  RSA302608  Centaurea solstitialis J. R. Shevock 1972-5-19 1763 Butte North of Oroville 61 Comment
  CHSC51997  Centromadia fitchii M. S. Taylor 1975-6-25 806 Butte Above Mud Ck., ca .5 mi n of Richardson Sprgs. Hotel, ca. 6 mi ne of Chico. 243 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
  SBBG19383  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  UC171477  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte e of Chico (hills near Big Chico creek) Comment
  CAS-BOT-BC288529  Centromadia fitchii Forman T. McLean 1921-10-18 30 Butte Nelson Comment
  CAS-BOT-BC271504  Centromadia parryi subsp. rudis Lowell Ahart 1981-5-16 2803 Butte Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley, Sutter Buttes Area 35 Comment
  CAS-BOT-BC271506  Centromadia parryi subsp. rudis M. S. Taylor; L. Ahart 1982-5-28 4345 Butte Gray Lodge Waterfowl Management Area, N side of Ruthrford Road, ca. 1/8 mi W of its jct with Pennington Road at the checking station, ca. 12 miles southwest of Gridley 21 Comment
  CHSC4408  Cephalanthera austiniae R. L. Smith 1966-5-28 6 Butte 3 mi nw of De Sabla. Comment
  CAS-BOT-BC222894  Cephalanthus occidentalis A. A. Heller 1914-7-14 11574 Butte Canon [Canyon] of Big Chico Creek. On streams bordering the Sacramento Valley Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC113370  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC65777  Cerastium glomeratum Vernon H. Oswald 1996-3-22 7257 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  RSA31137  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of the Sierra near Forest Ranch. 610 Comment
  SD234126  Cercis occidentalis Virginia Pinkus Ryder 1965-4-3 350 Butte Paradise 456 Comment
  UCD162735  Cercis occidentalis Dylan O. Burge 2014-5-18 1624 Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek. 243 Comment
  CHSC115455  Cercocarpus betuloides M. Sutton; C. Yasuda, S. Luse 2013-3-5 6 Butte Ten mile house trail. 391 Comment
  CHSC31929  Chaenactis douglasii var. douglasii J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1039 Butte Top of Humboldt Peak on outcrops immediately N of summit. 2133 Comment
  CHSC50100  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-24 4171 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 286 Comment
  CHSC6011  Chamaecyparis lawsoniana M. MacArthur 1968-4-19 253 Butte Front lawn of Administration bld., near First Street, Chico State College. 60 Comment
  CHSC46079  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte Prune orchard, west of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville. 30 Comment
  CDA32012  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS102333  Chamaesyce maculata Lowell Ahart 2000-11-4 8717 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (W side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  JEPS19342  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville Comment
  UC175374  Chamaesyce ocellata A. A. Heller 1913-9-24 11143 Butte 8 mi n Oroville (Table Mtn Olive Ranch) 121 Comment
  CHSC51262  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC94271  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-7-16 12964 Butte Near of the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC97716  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-10-31 14523 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
  CAS-BOT-BC66361  Cheilanthes covillei Lowell Ahart 1983-5-28 4024 Butte about 1/4 south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls 600 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  SEINET10529941  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3459 Butte T22N R5E sw sec 6. Pulga SW quad. End of spur rd, ca. 3/4 mi se of its jct with Ponderosa Way (Rim Rd), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap, 19 mi n of Oroville; 3000-3200 ft. 914 Comment
  CAS-BOT-BC460928  Chenopodium Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  CHSC47671  Chenopodium album Lowell Ahart 1989-9-1 6385 Butte By 15 hp. pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 mile south of Oroville. 36 Comment
  CHSC76414  Chenopodium album Lowell Ahart 1999-10-28 8312 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
  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
  UCR188501  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  JEPS103449  Chenopodium pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  RSA29941  Chenopodium pumilio I. L. Wiggins 1928-9-9 3344 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC110401  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte On the east side of the parth, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  RSA718387  Chimaphila umbellata subsp. occidentalis L. Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 Comment
  UCD138421  Chlorogalum angustifolium J. A. Jernstedt 1976-5-21 356 Butte Intersection of Palermo Road and Power House Hill Road, ca. 0.5 mile east of Highway 70. Comment
  JEPS114776  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 482 Comment
  CHSC111342  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-5-2 17953 Butte In the old fire guard, along the fence, about 50 yards northeast of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 93 Comment
  CHSC39931  Chorizanthe polygonoides var. polygonoides M. S. Taylor; V. Oswald 1984-4-4 5392 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. In dry open bare patches on hillside. Comment
  POM219008  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville. 1650 Comment
  CHSC31622  Cichorium intybus L. Ahart 1977-7-4 1466 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC279859  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CAS-BOT-BC184835  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mile north of the road connecting Humboldt and Humbug roads. 1813 Comment
  CAS-BOT-BC184836  Cinna latifolia Lowell Ahart 1983-8-16 4287 Butte Sierra Nevada. One mile east of Butte Meadows. Along a small stream that flows into Butte Creek. 1450 Comment
  CAS-BOT-BC285278  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  UC179526  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte edge of the forest about Chico Meadows 1219 Comment
  UCD130510  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CHSC61629  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte On the south side of the dirt road, about 1 mile south-east of Snow Mountain. 1981 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC46311  Cirsium occidentale var. candidissimum Vernon Oswald 1989-6-8 3803 Butte Camp Creek Rd, 0.5 mi s of Dogwood Creek, n of Pulga. Along road. 585 Comment
  CHSC8131  Cirsium occidentale var. venustum K. Henegar 1969-5-19 96 Butte Upper Bidwell Park, across from Alligator Hole. Comment
  CHSC21142  Cirsium vulgare M. S. Taylor 1975-8-31 878 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  SEINET516158  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  UCD104562  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis, M. Roberts 1951-5-19 830 Butte Road from Nimshew to Butte Creek Canyon. 2.3 miles above bridge across Big Butte Creek. Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  RSA0004427  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. 805 Comment
  CHSC70733  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4665 Butte Northwest side of canyon of North Fork Feather River, +/- overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Road cutbank. 670 Comment
  CHSC71159  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4681 Butte Granite Ridge; along Concow Road 0.1-0.2 mi north of junction; east side of ridge top, above Camp Creek. 1310 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway 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
  SD122549  Clarkia purpurea subsp. viminea Lowell & Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road ca. 2 miles East of Old Yankee Hill, ca. 16 miles NE of Oroville. 449 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
  CHSC36811  Clarkia rhomboidea L. Ahart 1982-6-15 3581 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  RSA108431  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 758 Butte Highway 24, 0.8 mile south of Arch Rock, Feather River. Comment
  RSA512848  Clarkia rhomboidea J. T. Howell 1967-6-22 42645 Butte Sierra Nevada: 3 miles northwest of Pulga Bridge, canyon of the Feather River North Fork. Comment
  SEINET10939937  Clarkia rhomboidea Mary Susan Taylor 1978-6-24 Taylor 1642 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC111123  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disk Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. 331 Comment
  RSA0005217  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 Km east of the Jonesville Hotel. Comment
  UC1609466  Claytonia parviflora subsp. grandiflora Vernon H. Oswald and Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail ene Magalia (between Jordan Hill Rd and Sawmill Peak Lookout) 740 Comment
  CHSC34703  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-8 2608 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  UC83810  Claytonia parviflora subsp. parviflora Mrs. R. M. Austin May 1896 73 Butte Little Chico Creek Comment
  RSA712990  Claytonia perfoliata L. Ahart 2006-4-28 12546 Butte 3/4 mile NW of Iron Gate along Cherokee Road, N TAble Mtn, 7 miles air N of Oroville 318 Comment
  CHSC33572  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-27 3557 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  UC852042  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows; Sierra Nevada 1219 Comment
  CHSC4021  Clematis lasiantha J. E. Bowlin 1967-3-10 5 Butte Down hillside, ca. 10 feet w of Cohasset Rd. and ca. 5.9 miles n of the corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  POM181656  Clematis lasiantha Williams 1927-04 11 Butte Near Richardson's Springs, Butte County Comment
  SEINET10536025  Clematis lasiantha Mary Susan Taylor 1975-4-25 Taylor 491 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  SEINET12088731  Clematis lasiantha Unknown 1978-1 17 Butte ca 8 mi NE of Chico Municipal Airport and .5 mi NW of Rock Creek, 12 mi NE of Chico Comment
  CHSC52785  Clematis ligusticifolia R. A. Schlising 1981-8-8 4191 Butte Concow area n of Oroville, near n end of Concow Reservoir. At roadside. Comment
  CAS-BOT-BC238019  Collinsia Jim Riley 1923-4-2 s.n. Butte Richardson Springs Comment
  JEPS119840  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SFV10348  Collinsia tinctoria M. L. Vincent 1963-6-6 369 Butte Nelson Bar Road at PGE. 300 Comment
  CHSC29219  Collomia heterophylla M. S. Taylor; J. D. Jokerst 1980-4-27 2550 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  SEINET10544538  Comandra umbellata subsp. californica Mary Susan Taylor 1978-5-6 Taylor 1588 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC34217  Conium maculatum M. S. Taylor 1981-5-28 3806 Butte Along River Rd, near bridge over slough, ca. 5 mi sw of Chico. 36 Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 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. Comment
  POM66159  Convolvulus arvensis Helen M. Edwards 1917-06 s.n. Butte De Sabla Comment
  CAS-BOT-BC285919  Conyza bonariensis Lowell Ahart 1982-9-9 3771 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC288957  Conyza floribunda Lowell Ahart 1985-1-27 4836 Butte At Kunkle Res, about 2 miles S of Paradise 550 Comment
  SEINET12326795  Cordylanthus pilosus subsp. bolanderi Unknown 1983-1 4279 Butte near Humboldt Rd, ca 3 mi SW of Butte Meadows 1450 Comment
  CHSC28383  Cordylanthus pilosus subsp. hansenii J. D. Jokerst 1979-10-13 386 Butte Jordan Hill Rd., 2.4 mi. N. of junction with Concow Cr. 609 Comment
  JEPS115275  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-6-30 15973 Butte On the west side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  JEPS60488  Cordylanthus pilosus subsp. hansenii T. I. Chuang and L. R. Heckard 1969-8-20 6739 Butte 3.2 mi sw Nimshew (on Humbug Rd (w of Magalia)) 304 Comment
  CHSC84453  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  CHSC80577  Coriandrum sativum Lowell Ahart 2001-6-13 8815 Butte Center of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC57377  Cornus nuttallii H. E. Brown 1896-10-1 108 Butte near Love Locks 335 Comment
  CHSC50830  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1990-7-19 4365 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.3 mi west of the Plumas County line. 2011 Comment
  UC725377  Cornus sericea subsp. sericea A. A. Heller 1938-7-20 15282 Butte 7 mi. e. on the Humbug Rd. Chaparral (upper end of Snag Lake) 1524 Comment
  CHSC87801  Cornus sessilis Paul Maslin 2004-4-15 18 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609912E 4410265N. On edge of Big Chico Creek. 240 Comment
  CHSC95174  Cornus sessilis R. D. Fischer 2004-5-2 800 Butte Chico. Sierra Nevada foothills within upper Bidwell park in Chico on the east-side addition off Hwy 32. Collected on the south side of Big Chico Creek near north end of park boundary. 228 Comment
  CHSC49700  Cortaderia selloana Vernon Oswald 1987-9-9 3240 Butte Butte Creek Preserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi e of the diversion dam for Crouch Ditch. On the bottom of a dredger pond. 80 Comment
  RSA0125552  Corydalis caseana Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  CHSC106880  Cotula australis Lowell Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  RSA0080123  Cotula australis Lowell Ahart 2011-5-9 17353 Butte On the south side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC103942  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC31652  Crassula aquatica L. Ahart 1974-5-22 456 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC90952  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCSB45763  Crassula connata Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Table Mt. Road Comment
  SEINET10449717  Crassula muscosa Mary Susan Taylor 1980-4-16 Taylor 2492 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  JEPS103517  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, E of Parking Lot 10, Gray Lodge State Wildlife Management Area, ca 4 miles (air) SW of Gridley. 22 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 269 Comment
  RSA755766  Crataegus laevigata L. Ahart 2009-5-30 15792 Butte East side of Big Chico Creek, about 30 yards south of the gate, about 10 yards west of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 270 Comment
  CHSC116986  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC77995  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte Near the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SD116531  Crucianella angustifolia Barbara Ertter, L. Ahart, J. Strachan 1980-5-6 3282 Butte Peter Ahart Ranch ca 2I(c) mi NNE of Honcut between Oroville & Marysville, stream 29 Comment
  JEPS122259  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte 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. Comment
  CLARK-A1528-1241  Crypsis niliacea John C. Roos 1939-7-3 1521 Butte Chico Comment
  JEPS124349  Crypsis schoenoides Lowell Ahart 2015-10-26 20601 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  RSA726439  Crypsis schoenoides L. Ahart 2007-10-31 14514 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET10518387  Crypsis vaginiflora Lowell Ahart 1982-1 Ahart 3673 Butte On dry bare soil bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Very common. 35 Comment
  SEINET10518389  Crypsis vaginiflora Lowell Ahart 1986-11-14 Ahart 5467 Butte On dry red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 37 Comment
  CHSC105798  Cryptantha affinis Lowell Ahart 2010-9-21 17228 Butte On the south side of a poor dirt road, about 1mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC113521  Cryptantha affinis Lowell Ahart 2014-7-7 19601 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC86138  Cryptantha affinis John Dittes; Josephine Guardino 2002-6-21 617 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  CHSC40754  Cryptantha flaccida Lowell Ahart 1985-5-6 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  SEINET10935929  Cryptantha intermedia Lowell Ahart 1985-5-31 Ahart 5030 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC39538  Cryptantha simulans Lowell Ahart 1983-5-28 4020 Butte On both sides of the trail to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC33412  Cryptantha torreyana R. A. Schlising; R. Banchero 1980-7-11 3880 Butte At Merrimac in extreme NE part of county. 1203 Comment
  SEINET10969187  Cuscuta californica Mary Susan Taylor 1979-10-13 Taylor 2264 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC78508  Cuscuta pentagona Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1586409  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte about 4 air mi ne Brush Creek (e of Oroville-Quincy Hwy, on the n side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd)) 1097 Comment
  CHSC75963  Cycloloma atriplicifolium Lowell Ahart; Vernon H. Oswald 1999-8-13 8159 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
  CHSC21260  Cynoglossum grande M. S. Taylor 1973-3-27 30 Butte Ca. 5 yds s of Humbug Rd, ca. 19 mi se of Chico. 548 Comment
  CHSC92558  Cynoglossum grande L. P. Janeway 2005-4-25 8367 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope of side drainage of Flea Valley Creek 180 m northeast of junction of Concow Road and Rim Road (Ponderosa Way). 951 Comment
  SEINET10497516  Cynoglossum occidentale Mary Susan Taylor 1981-5-4 Taylor 3595 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  RSA755042  Cynosurus echinatus L. Ahart 2009-5-15 15674 Butte About 80 yards W of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 271 Comment
  SEINET10507677  Cynosurus echinatus Mary Susan Taylor 1979-9-28 Taylor 2200 A Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC68378  Cyperus bipartitus L. P. Janeway; C. A. Janeway 1986-10-4 1903 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  UCD150346  Cyperus bipartitus William Anderson 1965-9-4 s.n. Butte Dry Creek-Oro-Paradise Rd. Comment
  CHSC109748  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 67 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
  UC1100413  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13036 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  UC1562493  Cyperus erythrorhizos Lowell Ahart 1990-8-15 6587 Butte ca. 1/2 mi. s.w. of Enterprise Bridge across Lake Oroville (along McCabe Creek); McCabe Creek 228 Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  CDA34631  Cyperus niger L. Ahart 2009-6-19 15924 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  SEINET227301  Cyperus niger Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mile NE of Kunkle Reservoir S of Paradise 600 Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CHSC6652  Cyperus rotundus M. MacArthur 1968-6-22 274 Butte Near middle of SE wall of EP bld., Chico State College. 60 Comment
  CHSC65353  Cyperus squarrosus Lowell Ahart 1995-10-3 7674 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC71266  Cyperus squarrosus Lowell Ahart 1998-7-1 8027 Butte About 100 yards south of a east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC76852  Cyperus squarrosus L. P. Janeway 1999-6-26 6489 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 29 Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC1133510  Cyperus squarrosus H. S. Yates 1936-8-13 6101 Butte Butte Meadow Paynes Creek Quad., Butte Meadow 1341 Comment
  CAS-BOT-BC114206  Cyperus strigosus Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC114205  Cyperus strigosus Lowell Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 50 Comment
  CHSC111164  Cystopteris fragilis Lowell Ahart 2012-6-21 18203 Butte High south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC26840  Cystopteris fragilis M. S. Taylor 1978-6-24 1659 Butte On n side of Scotts John Rd, ca. 3 mi e of ets jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  JEPS87129  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  SEINET3166413  Cystopteris fragilis P. J. Alexander 2009-5-27 1051 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, +-200 yards south of the bridge over Frey Creek, 3.3 miles SE of Bald Rock Dome, 17.8 miles ENE of Oroville, Plumas National Forest. 613 Comment
  POM121176  Cystopteris fragilis C. C. Bruce 1897-05 1666 Butte Iron Canyon. Comment
  CHSC102835  Dactylis glomerata Lowell Ahart 2009-6-19 15916 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC6752  Dactylis glomerata Marilyn Lee 1968-5-3 64 Butte Intersection of Skyway and Coutolene Rd., 2 miles S. of DeSalbia. Comment
  CAS-BOT-BC189854  Danthonia californica Lowell Ahart 1987-7-8 5812 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC105507  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
  CHSC33854  Danthonia unispicata J. D. Jokerst; R. A. Schlising 1980-6-16 855 Butte Ca 50 met N of Humboldt Rd at a point 1.9 mi N of the jct with Hwy 32. Carpenter Ridge. Comment
  CHSC6079  Danthonia unispicata B. Wilson 1968-4-19 164 Butte 2 mi s of Cherokee, on Table Mountain. Comment
  UC1137166  Danthonia unispicata August L. Hormay 1929-6-22 Butte Butte Meadows; w exposure Comment
  CHSC63720  Darlingtonia californica Lowell Ahart 1994-9-3 7547 Butte In open meadow, near the east side of the meadow, ... Field redacted by CHSC, contact the data manager for more information 1371 Comment
  CHSC5967  Darmera peltata M. MacArthur 1968-6-17 184 Butte SE edge of Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  CHSC51278  Datura stramonium var. stramonium Lowell Ahart 1990-9-30 6611 Butte On the south side 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
  CHSC45735  Datura wrightii Elizabeth L. Knight 1988-4-15 7 Butte At Parrott Landing ca. 50 ft e of Sacramento River ca. 11 m sw of Chico. River bank. 30 Comment
  UC106444  Daucus pusillus R. M. Austin May, 1883 200 Butte Little Chico Creek Comment
  SEINET10873898  Daucus pusillus Mary Susan Taylor 1982-5-21 Taylor 4491 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  SEINET10906787  Daucus pusillus Mary Susan Taylor 1979-6-12 Taylor 2304 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC8797  Delphinium gracilentum f. versicolor Lowell Ahart 1980-5-25 2337 Butte Near Old Forbestown 1000 Comment
  SEINET10833581  Delphinium hesperium Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4079 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC44345  Delphinium hesperium subsp. pallescens Lowell Ahart 1988-4-29 5966 Butte Slope west of North Honcut Creek, on the Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 68 Comment
  CHSC40060  Delphinium nudicaule C. C. Bruce 1899-4-1 185 Butte Grain fields. Comment
  CHSC11813  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  CAS-BOT-BC121620  Delphinium patens subsp. patens Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CHSC52120  Delphinium variegatum R. E. Alumbaugh 1984-4-26 1 Butte 6.4 mi e of hwy 99 and ca. 50 yds n of Skyway, 8.5 mi e of Chico. 387 Comment
  CAS-BOT-BC82871  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Near Magalia. Comment
  UC726608  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  LA206368  Deschampsia cespitosa A. A. Heller; 1928-7-10 14621 Butte Butte Meadows Comment
  UC589923  Deschampsia cespitosa subsp. cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 mi. s.-s.e. Butte Meadows; Paynes Creek Quad. 1493 Comment
  POM365021  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at road forking to Chico Creek. Comment
  RSA424685  Deschampsia danthonioides Aaron Liston, M. A. Blumler 1987-4-24 658 -8 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  UCD62771  Deschampsia danthonioides P. B. Kennedy 1914-5-1 s.n. Butte Chico. Comment
  CAS-BOT-BC201747  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 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
  CHSC48254  Dianthus armeria subsp. armeria Vernon Oswald 1985-6-6 1816 Butte Coutolenc Rd. 0.1 mi n of the Skyway at Magalia. Roadside. 707 Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  SEINET12046113  Dichelostemma capitatum K. E. Warwick 1978-1 3 Butte ca 50 m N of Humbolt Rd, 1 km E of intersection of Humbolt Rd & Bruce Rd, ca 3 km E of Chico Comment
  CHSC2070  Dichelostemma congestum V. Holt 1935-5-26 Butte Humboldt road 76 Comment
  CHSC117596  Dichelostemma multiflorum L. P. Janeway 2016-6-2 12108 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CAS-BOT-BC501081  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 3914 Butte SW of Oroville on Highway 24 Comment
  HSC38140  Dichelostemma multiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-9 2444 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET10533980  Dichelostemma multiflorum A. Arthur Heller 1915-5-28 Heller 11902 Butte Plentiful near Cohasset in red clay in open places in the chaparral, which here is mainly Quercus oerstediana, with Adenostoma and Toxicodendron. Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  CHSC44434  Dichelostemma volubile Lowell Ahart 1988-5-30 6017 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  CAS-BOT-BC502519  Dichelostemma volubile Margaret J. Williams; Wayne Roderick 1984-5-25 84- 21 -2 Butte 3.3 miles from Paradise on Honey Run Road. 167 Comment
  CHSC46594  Digitalis purpurea V. Oswald; L. Ahart 1989-7-12 3841 Butte Loggin road (T-line) 0.5 mi (air) wnw of Bald Mtn Lookout, ne of Stirling City. 1487 Comment
  SEINET10548430  Digitalis purpurea Mary Susan Taylor 1981-5-15 Taylor 3742 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  CAS-BOT-BC151924  Diplacus douglasii H. E. Brown 1897-4-15 198 Butte Near Clear Creek Comment
  CAS-BOT-BC150499  Diplacus grandiflorus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC29394  Diplacus kelloggii R. A. Schlising; S. Azevedo 1980-6-13 3696 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC44761  Diplacus kelloggii R. Banchero 1980-5-12 150 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  CAS-BOT-BC153222  Diplacus kelloggii N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 10 Butte Table Mountain, [Cherrokee] Cherokee Rd, approx. two miles east of Hwy 70 Comment
  CAS-BOT-BC153336  Diplacus layneae John Thomas Howell 1962-6-15 37533 Butte Magalia 731 Comment
  CAS-BOT-BC153335  Diplacus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills 487 Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC44791  Diplacus torreyi R. Banchero 1980-7-7 284 Butte Along Quartz Creek Rd 0.2 mi N of its jct with County Line Rd, ca 2.4 mi S of the Fall River campground. 1164 Comment
  CHSC44798  Diplacus torreyi R. Banchero 1980-6-17 Butte Along the Skyway 0.8 mi NE of its jct with Ponderosa Way, 0.6 mi W of Toadtown. 829 Comment
  CHSC65904  Diplacus tricolor Vernon H. Oswald 1996-4-20 7396 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC100483  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  JEPS115045  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  JEPS120013  Dittrichia graveolens Lowell Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 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
  CHSC3620  Dodecatheon clevelandii subsp. patulum John Francis 1966-2-21 22 Butte 1/2 mile S. of intersection on Neal Rd. and Hwy 99E on Neal Road. Plant growing in pasture. Comment
  POM76693  Dodecatheon clevelandii subsp. patulum C. C. Bruce 1897-02 2098 Butte Little Chico. Comment
  UC1185278  Dodecatheon clevelandii subsp. patulum H. E. Brown Apr. 1-15, 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  UC195373  Dodecatheon clevelandii subsp. patulum A. A. Heller 1914-2-16 11178 Butte 8 mi n Oroville; n of Oroville Comment
  HSC67921  Dodecatheon clevelandii subsp. patulum J. P. Smith 1973-3-22 5930 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC31341  Dodecatheon hendersonii Diane M. Reilly 1980-3-21 2 Butte NW slope ca. 1/2 mi n on dirt road, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 518 Comment
  CHSC67289  Dodecatheon hendersonii James D. Jokerst; L. Ahart 1985-3-24 2178 Butte Rocky Ridge' ca. 1.33 mi NE of N edge of Lake Concow on road to Flea Mtn. Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  SEINET12319544  Downingia bicornuta Unknown 1980-1 18 Butte N of Chico. T23N, R1W, Sec. 4. (Richardson Spgs. NW quad, 7.5') 58 Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  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
  CHSC46261  Downingia insignis Vernon Oswald 1989-5-1 3757 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Fallow fice field located on the e side of the dike road ca. 1.3 mi n of Gridley-Colusa Hwy. 18 Comment
  JEPS95868  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC26831  Drosera rotundifolia M. S. Taylor; M. Hayes 1978-6-24 1669 Butte On N side of Old Humboldt Rd, across from Butte Me ... Field redacted by CHSC, contact the data manager for more information 1371 Comment
  UCD170794  Drosera rotundifolia Barry Rice 2017-9-4 BR- 170901 Butte Butte Creek. 1500 Comment
  RSA0011687  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville. Comment
  CHSC90204  Dryopteris arguta Lowell Ahart 2005-1-20 11473 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  CAS-BOT-BC70858  Dryopteris arguta Wayne Dakan 1975-3-12 s.n. Butte Village of Pulga on the Feather River 457 Comment
  CHSC42960  Dysphania ambrosioides Lowell Ahart 1987-7-3 5755 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94843  Dysphania botrys Lowell Ahart 2006-10-8 13438 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
  CHSC116128  Dysphania pumilio Lowell Ahart 2015-11-7 20618 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC105958  Echinochloa colona Lowell Ahart 2010-9-24 17236 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC92551  Echinochloa colona Lowell Ahart 2005-12-11 12516 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
  SEINET3125710 Image available Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  UC1131534  Echinochloa crus-galli H. S. Yates 1936-8-14 6120 Butte 10 mi s Durham; Chico Quad. Comment
  UC1254615  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  SEINET245846 Image available Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs 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
  JEPS102772  Elatine heterandra Lowell Ahart 2001-4-15 8729 Butte A deep ditch, SE of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  JEPS98372  Eleocharis acicularis Lowell Ahart 2000-7-11 8579 Butte 4 air mi NE of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  UC1100617  Eleocharis atropurpurea Malcolm A. Nobs and S. Galen Smith 1949-7-29 1083 Butte 5 mi w Richland Comment
  JEPS110400  Eleocharis bolanderi Lowell Ahart 2006-8-15 13177 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 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
  CHSC45143  Eleocharis pachycarpa Lowell Ahart 1975-6-19 793 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC113142  Eleocharis pachycarpa John Thomas Howell 1954-5-18 29840 Butte 1.5 mi NNE of Buena Vista 91 Comment
  CAS-BOT-BC113213  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  CHSC78200  Eleocharis quinqueflora Lowell Ahart 2000-5-30 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  RSA716569  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  JEPS98465  Eleocharis radicans Lowell Ahart 2000-9-4 8686 Butte Along the west margin of a large pond, on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS106243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  UC1609071  Elymus elymoides subsp. elymoides Lowell Ahart 1993-6-20 7005 Butte about 1 (air) mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC25268  Elymus glaucus M. S. Taylor 1977-6-25 1364 Butte On Sacramento River, ca. 10 mi e of Chico on River Rd. 30 Comment
  CHSC47616  Elymus glaucus Lowell Ahart 1977-6-13 1410 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC203421  Elymus glaucus subsp. glaucus V. Oswald; L. Ahart 1988-7-29 3642 Butte Ca 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC49577  Elymus multisetus Vernon Oswald 1987-6-2 2944 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  UCD62619  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  CHSC85741  Elymus trachycaulus subsp. subsecundus G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada-Plumas National Forest. Bank on USFS N60 approx. immed. E of bridge over Marble Creek. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CAS-BOT-BC204285  Elymus trachycaulus subsp. trachycaulus V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca 3 mi (air) se of Jonesvill eon Humbug Rd, ca. 0.3 w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. 1755 Comment
  SEINET6631140 Image available Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-1 428 Butte Jonesville 1600 Comment
  CHSC31009  Epilobium brachycarpum M. S. Taylor 1978-9-8 1894 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 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
  UC203661  Epilobium brachycarpum A. A. Heller 1914-8-20 11689 Butte along creek about 5 mi s Pentz; Dry Creek Comment
  UCR219098  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CHSC20963  Epilobium canum subsp. latifolium M. S. Taylor 1974-9-17 317 Butte Along Fern Banks, s side of Chico Creek, opposite Chico Municipal Golf Course, Bidwell Park, Chico. Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC51271  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 6624 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SEINET10452980  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6624 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  RSA0118758  Epilobium ciliatum subsp. glandulosum Lowell A. Ahart 2014-7-13 19653 Butte East part of a large wet meadow, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1564799  Epilobium ciliatum subsp. glandulosum V. Oswald and L. Ahart 1989-7-12 3854 Butte meadow near headwaters (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1901 Comment
  UC1594715  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  UC204920  Epilobium densiflorum A. A. Heller 1914-7-24 11621 Butte Butte Meadows Sierra Nevada 1219 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
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC48633  Epilobium minutum Vernon Oswald 1987-4-20 2333 Butte Butte Creek Preserve on the s side of the creek ne of the Skyway. 85 Comment
  RSA31269  Epilobium minutum C. R. Quick 1941-6-7 41 -27 Butte Big Bar Mts towards Coyote Gap. Comment
  SEINET10453181  Epilobium minutum Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4653 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC28717  Epilobium torreyi R. A. Schlising 1979-5-27 3422 Butte Northeast of Chico and southwest of Paradise, near the Skyway. Comment
  UCD80484  Epilobium torreyi CNPS SN Foothill Team 2005-5-3 SNFN 0197 b Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  CAS-BOT-BC57994  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  JEPS120178  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SEINET4568214  Eragrostis chloromelas R. McKee 1907-8-18 13903 Butte Chico Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC284081  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 1492 Butte The edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville 35 Comment
  CDA42964  Eragrostis pectinacea var. pectinacea L. Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CHSC44922  Eragrostis pectinacea var. pectinacea Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  CAS-BOT-BC278505  Eragrostis pilosa Lowell Ahart 1988-8-10 6169 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99 60 Comment
  CAS-BOT-BC278506  Eragrostis pilosa Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  JEPS115255  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC92521  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-20 1224 Butte Near Four Trees Road. 1456 Comment
  RSA712969  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi. north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
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Mar 16 2012
  CAS-BOT-BC168360  Eremogone ferrisiae Lowell Ahart 1983-7-29 4246 Butte 2 miles east of Milsap Bar, ca. 25 miles northeast of Oroville - Sutter Buttes Region 900 Comment
  CAS-BOT-BC298292  Ericameria nauseosa var. speciosa H. E. Brown 1896-11-15 46 Butte Near Clear Creek 53 Comment
  CHSC56749  Erigeron canadensis J. D. Jokerst 1980-4-2 Butte Town of Cherokee. Comment
  JEPS120523  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Comment
  UC725636  Erigeron foliosus var. hartwegii A. A. Heller 1942-6-5 16499 Butte about half way between the junction of the Middle Fork and the West Branch (on the Feather River Highway) Comment
  POM173375  Erigeron inornatus var. inornatus H. F. Copeland 1928-8-14 1004 Butte Ridge above Jones Creek, neighborhood of Jonesville Comment
  CAS-BOT-BC295468  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC43178  Erigeron lassenianus var. lassenianus Robert Banchero 1981-6-20 523 Butte Ca 1 mi w of Jones meadow. 1810 Comment
  JEPS105013  Erigeron petrophilus var. sierrensis Dean W. Taylor 1995-8-6 15384 Butte Rocky Ridge, N end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest 975 Comment
  CHSC6755  Erigeron philadelphicus Marilyn Lee 1968-4-19 114 Butte On E. side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Table Mt. Comment
  POM34274  Erigeron philadelphicus Mrs. R. M. Austin, C. C. Bruce 1898-05 2077 Butte Iron Canyon. Comment
  SEINET5495492  Eriodictyon californicum B. Nightingale 1961-4-29 41 Butte Shore of Deer Creek about 20 miles north of Chico on HWY 99E 64 Comment
  CAS-BOT-BC259279  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  CAS-BOT-BC263201  Eriogonum marifolium var. marifolium H. F. Copeland 1920-7-11 72 Butte Scotch John Meadows 1828 Comment
  CAS-BOT-BC261464  Eriogonum nudum var. nudum Lowell Ahart 1982-9-29 3843 Butte Along Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, about 3 1/2 miles north-west of Strawberry Valley. The road goes through the mine tailings. The road is the one from Sly Creek Reservoir to Mooreville Ridge 1200 Comment
  CAS-BOT-BC261718  Eriogonum nudum var. oblongifolium A. A. Heller 1914-7-22 11585 Butte Little Summit near Butte Meadows 1463 Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CAS-BOT-BC269849  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Roadside banks of Lower Feather River Canyon (Rte. 70) 304 Comment
  RSA718043  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. Common in area. 610 Comment
  UC478525  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC69687  Eriogonum umbellatum var. ahartii Vernon Oswald 1985-6-26 1867 Butte Forbestown Reservoir Rd. 0.2 mi w of Oroleve Creek. 617 Comment
  RSA0069350  Eriogonum umbellatum var. ahartii Dean W. Taylor 2013-7-31 21389 Butte Jordon Hill Road, ca. 1 air mile directly east and across the West Branch Feather River canyon from Magalia. 701 Comment
  RSA718778  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. Serpentinr outcrop road cut bank; southeast-facing 579 Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  SEINET10937585  Eriogonum ursinum Mary Susan Taylor 1979-7-21 Taylor 2145 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC58942  Eriogonum ursinum var. ursinum Lowell Ahart 1992-7-29 6884 Butte On rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  JEPS109906  Eriophorum gracile Dean W. Taylor 2006-8-17 19609 Butte Keyser Creek; West Branch Feather River watershed; boggy fen with patterned ground 1524 Comment
  CAS-BOT-BC308080  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-9 64 -51 Butte North of Jarbo Gap, Sierra Nevada Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  CHSC90176  Erodium botrys Robert Kissane 1989-4-18 10 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  UC762232  Erodium macrophyllum R. F. Hoover 1937-5-18 2230 Butte 2 mi s Nelson Comment
  UCR237319  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18731 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCD114817  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC44768  Erythranthe bicolor R. Banchero 1980-6-17 245 Butte Along the Skyway 1.1 mi Ne of its jct with Coutolenc Rd, 2.4 mi W of Stirling City. 865 Comment
  CHSC62588  Erythranthe bicolor L. P. Janeway 1993-6-10 4382 Butte Plumas National Forest. Southwest side of Watson Ridge, ca. 1.5 mi east of Bald Rock Dome. 822 Comment
  CHSC1760  Erythranthe cardinalis V. Holt 1932-10-28 Butte Near Richardson Springs. 152 Comment
  CHSC31872  Erythranthe cardinalis L. Ahart 1975-7-19 904 Butte Along North Honcut Creek on moist soil; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC109353  Erythranthe filicifolia T. M. Hanson; Melanie Williams 2012-6-21 Butte Northern Sierra Nevada. Plumas National Forest; south of Lumpkin Ridge Road (22N27); 2.1 km east of Camp Eighteen. 1256 Comment
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Jan 23 2014
  CHSC90200  Erythranthe glaucescens S. M. Fleshman 1989-5-1 19 Butte Located ca. 3 mi se of junction of Cohasset and Vilas roads ca. 10 mi e of Chico. 396 Comment
  CAS-BOT-BC153858  Erythranthe glaucescens A. A. Heller 1938-5-4 15060 Butte Near the covered bridge over Butte Creek east of Chico Comment
  SEINET13976392 Image available Erythranthe grandis A. A. Heller 1938-1 15028 Butte Table Mountain 305 Comment
  CHSC44943  Erythranthe guttata J. Marr 1988-3-19 14 Butte 2.5 mi on w side of Cherokee Rd, ca. 6 mi n of Oroville. 342 Comment
  CHSC76970  Erythranthe guttata Margie Ceollins 1894-5-1 Butte Butte Creek. Comment
  CHSC84713  Erythranthe inconspicua L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7848 Butte Northern High Sierra Nevada. Along southeast edge of North Fork Feather River arm of Lake Oroville, between mouth of Berry Creek and mouth of French Creek. 280 Comment
  CHSC47692  Erythranthe microphylla Lowell Ahart 1978-5-12 1717 Butte Peter Ahart Ranch, about 2 1/2 miles north and /2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31950  Erythranthe nasuta J. D. Jokerst 1979-3-20 1155 Butte Top of North Table Mt, west edge where the waterfall of the S branch of Coal Cr is. 365 Comment
  CHSC43763  Erythranthe tilingii Vernon Oswald; Lowell Ahart 1987-7-1 3081 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. 1935 Comment
  SBBG17080  Erythronium citrinum M. Vincent 1961-3-27 19 Butte 1 mi N of Magalia 762 Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  CAS-BOT-BC504522  Erythronium multiscapideum Mrs. J. H. Morrison 1931-3-20 s.n. Butte Durham Comment
  SEINET10839630  Erythronium multiscapideum Lowell Ahart 1983-4-14 Ahart 3934 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC43796  Erythronium purpurascens Vernon Oswald 1984-7-12 1575 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  SEINET10469556  Erythronium purpurascens Mary Susan Taylor 1981-4-28 Taylor 3561 Butte T22N R5E nw sec 2. Pulga SW quad. S side of 23N28.2 (Rd to Big Bar Mt from Coyote Gap), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, ca. 4 air mi E of Pulga. 4200 ft. 1280 Comment
  CAS-BOT-BC402647  Eschscholzia caespitosa Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  UC204875  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte 8 mi from Chico (on Chico-Centerville Rd, near Cutte Creek) Comment
  CAS-BOT-BC402650  Eschscholzia caespitosa Mrs. C. C. Bruce 1897-4-1 2019 Butte Nelsons bar Comment
  CHSC112099  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte On the south side of Big Chico Creek, about 5 yards east of the Freewy, Lower Bidwell Park, Chico. 62 Comment
  CHSC3987  Eschscholzia californica E. P. Parreno 1967-4-13 Butte Beside the road of Chico cemetary. Comment
  CHSC10656  Eschscholzia lobbii Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  SEINET10452902  Eucalyptus camaldulensis Mary Susan Taylor 1982-5-22 Taylor 4494 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  JEPS118625  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley. Near edge of water, south side Feather River just east of Bedrock Park, Oroville. Lamoine 7.5 minute quadrangle, 665-2, 1998 Comment
  CHSC612  Euphorbia crenulata I. Huffman 1930-5-20 Butte Paradise. 548 Comment
  SEINET10453765  Euphorbia hooveri Mary Susan Taylor 1980-1 Butte Comment
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  UCD142602  Euphorbia maculata John Thomas Howell 1959-9-20 34671 Butte Eastern outskirts of Oroville. 60 Comment
  JEPS119577  Euphorbia peplus Lowell Ahart 2012-4-17 17877 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
  SEINET10873986  Euphorbia serpillifolia Lowell Ahart 1985-10-12 Ahart 5200 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  UC1557929  Eurybia radulina J. Semple, S. Heard 1986-8-14 8418 Butte between Stirling City and Butte Meadows (ne of Chico) just ne of Inskip Comment
  RSA0060843  Euthamia occidentalis Lowell A. Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC74043  Festuca idahoensis H. Durio 1995-6-28 Butte Ca 1.5 mi NW of Strawberry Valley, just E of Lewis Flat and W of boat ramp at Sly Creek Reservoir. In old mined site. 1133 Comment
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 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
  CHSC112786  Festuca myuros Lowell Ahart 2013-5-18 18701 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC74163  Festuca occidentalis B. Castro; E. Hubert 1996-7-18 682 Butte Ca 4.5 air mi NW of town of Brush Creek, ca 1.5 air mi W of French Creek, on S side of USFS Rd 22N31 and just E of Rd 22N34Y. In clearcut area on either side of tributary to Bidwell Creek. 865 Comment
  SEINET10559487  Festuca subulata Lowell Ahart 1981-9-15 Ahart 3159 Butte On moist soil on the sides of Pinkard Creek, ca. 0.5 mi N of the Lost Creek Reservoir. County Record. 1100 Comment
  CHSC43056  Fragaria vesca L. P. Janeway 1987-6-19 2239 Butte At bridge over Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. At edge of road. 1097 Comment
  CAS-BOT-BC437080  Fragaria virginiana subsp. platypetala H. F. Copeland 1920-8-29 162 Butte Jonesville 1219 Comment
  CAS-BOT-BC437081  Fragaria virginiana subsp. platypetala H. F. Copeland 1929-6-10 1206 Butte Jonesville 1524 Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  CHSC50841  Frangula purshiana Vernon Oswald; Lowell Ahart 1990-7-19 4364 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.3 mi west of the Plumas County line. 1981 Comment
  CHSC33998  Fraxinus americana Carl Pejsa 1980-4-12 51 Butte Bidwell Park Forestry Station. Comment
  UC1123350  Fraxinus dipetala J. E. Sowder 1933-8-4 127 Butte above de Sable Power House; Chico Quad. 457 Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  CAS-BOT-BC205977  Fremontodendron decumbens Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC118038  Fremontodendron decumbens Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 236 Butte Durham Native Plant trail near elementary school. 55 Comment
  SEINET10838744  Fremontodendron decumbens Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4084 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
  CHSC4661  Fritillaria affinis R. Carter 1966-3-13 301 Butte Found ca. 6 mi. E of Chico at intersection of HoneyRun Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  SEINET10905373  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3475 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  RSA32885  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte Near Stirling Comment
  CDA13246  Galium aparine G. F. Hrusa, T. D. Wilfred 1996-7-8 13093 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  SEINET10500616  Galium aparine Mary Susan Taylor 1973-1 Taylor 46 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC426969  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville 1700 Comment
  CHSC86597  Galium divaricatum L. P. Janeway 2003-5-7 7779 A Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  SD4923  Galium grayanum subsp. grayanum E. B. Copeland 1930-7-25 474 Butte Jonesville, in crevices, dry rocky ridge 1700 Comment
  SEINET12285551  Galium grayanum subsp. grayanum Unknown 1959-1 5937 Butte summit above Jonesville, ridge E of pass 2134 Comment
  RSA4163  Galium grayanum var. grayanum E. B. Copeland 1930-7-6 475 Butte Above Jonesville. 2000 Comment
  CDA6671  Galium mollugo Sterling O. Mattoon, L. C. Going 1962-6-19 Butte Southwest of Nord Avenue & Bell Road, Chico. 0 Comment
  CHSC104805  Galium murale Lowell Ahart 2010-6-1 16764 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico. 115 Comment
  RSA718331  Galium parisiense L. Ahart 2006-6-9 12651 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  POM319644  Galium parisiense Patricia Wilder 1971-6-23 5177 -a Butte Magalia. N of Paradise. Coutelenc Road just N of the jct with Skyway Road along railroad track. Sierra Nevada Mtn range. W branch of the Feather River. 732 Comment
  CHSC30301  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CHSC64218  Galium trifidum var. pacificum S. C. Morey 1983-7-24 622 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC33968  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-15 4187 Butte Ca. 14 mi NE of Stirling City. 1737 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  CHSC77979  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte On the margin of the Thermalito Afterbay, on the west 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
  UCD121118  Garrya flavescens D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  RSA754962  Gastridium phleoides L. Ahart 2008-5-21 14780 Butte Lake Oroville, north side of South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  JEPS104033  Gastridium ventricosum Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, ca 1 1/2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 45 Comment
  CHSC84437  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. 1771 Comment
  SD3353  Gayophytum heterozygum E. B. Copeland 1929-7-29 Butte Jonesville. In rather dry and open woods, along Butte Creek. Comment
  CHSC112716  Gayophytum humile Lowell Ahart 2013-10-26 19214 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  JEPS121941  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC1564769  Gentiana newberryi V. Oswald and L. Ahart 1989-8-22 3956 Butte 3.5 mi (air) se Jonesville (on the e side of Humbug Rd, Butte Creek House Meadow) 1767 Comment
  CHSC33961  Gentianopsis simplex M. S. Taylor; L. Ahart 1981-8-16 4199 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  RSA0045624  Geranium dissectum Lowell A. Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  JEPS115239  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC263236  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC64211  Geum macrophyllum S. C. Morey 1983-8-3 697 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  RSA469346  Gilia capitata subsp. pedemontana L. S. Rose 1939-6-7 39245 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CAS-BOT-BC266595  Githopsis pulchella John Thomas Howell 1967-6-22 42610 Butte Magalia 701 Comment
  CAS-BOT-BC266596  Githopsis pulchella David D. Keck 1933-5-30 2403 Butte 3 miles N of Chico on Richardson Springs Road Comment
  CHSC86852  Githopsis pulchella subsp. campestris L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7788 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  SEINET10460575  Githopsis pulchella subsp. campestris A. Arthur Heller 1941-5-9 Heller 16106 Butte Clark road, gravelly slope foot of the Paradise grade Comment
  CHSC42725  Githopsis specularioides Lowell Ahart 1987-5-11 5622 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC62542  Githopsis specularioides L. P. Janeway 1993-5-2 4336 Butte Serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  SEINET12331825  Githopsis specularioides Unknown 1985-1 4967 Butte W of Lunt Road, about 0.5 mi N of the Intersection of LuntRoad and Highway 70, N of Yankee Hill, 503 Comment
  UCSB40621  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 3 miles up Corcow Road from Hwy 70 Comment
  CHSC63707  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte On the bottom of a large drying pond, on the south side of the shooting area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  JEPS113579  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  SEINET10905047  Gnaphalium Mary Susan Taylor 1981-5-6 Taylor 3625 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC49678  Goodyera oblongifolia Vernon Oswald 1983-8-4 949 Butte Near Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1188 Comment
  POM252679  Goodyera oblongifolia E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  SEINET10470042  Goodyera oblongifolia Lowell Ahart 1991-9-19 Ahart 6728 Butte Near where the two branches of Wildcat Creek come together, about 2 miles northwest of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles northeast of Coyote Gap. Yellow Pine Forest. T23N R6E NW/S29. 1219 Comment
  CHSC29831  Gratiola ebracteata M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2763 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  JEPS106136  Gratiola ebracteata Lowell Ahart 2004-7-11 11228 Butte Below the high water line, on the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  SEINET13768180  Gratiola ebracteata B. Ertter 1980-5-5 3266 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  UCD123729  Gratiola ebracteata R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  SEINET267158  Grindelia camporum var. camporum T. A. Ranker, P. G. Trapp 1994-6-17 1625 Butte Pence Road south of Paradise. 395 Comment
  CHSC31608  Grindelia hirsutula var. davyi L. Ahart 1977-10-19 1604 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UCR219091  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15580 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC25272  Hastingsia alba M. S. Taylor 1977-6-26 1391 Butte On ne side of Big Chico Creek directly under Ponderosa Way bridge, 5 mi e of Cohasset. 457 Comment
  CHSC78347  Hastingsia alba Lowell Ahart 2000-7-11 8571 Butte On the north side of Lumpkin Ridge Road, upper west branch of Knownothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
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Dec 14 2020
  CHSC108794  Hedera helix Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  UC177603  Hedypnois rhagadioloides H. M. Hall 1914-8-2 9832 Butte Sierra foothills back of Oroville Comment
  RSA4141  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville. 1500 Comment
  UC177590  Helenium puberulum H. M. Hall 1914-8-1 9827 Butte foothills near Oroville; Sierra Nevada Mountains Comment
  CHSC87567  Helianthella californica var. nevadensis R. D. Fischer 2004-4-20 149 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail near the junction of the Bloody Pin Trail. 411 Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  UC179529  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte 6 mi from Chico Chico (on the Chico Hamilton road, in low fields) Comment
  CHSC116003  Heliotropium europaeum Lowell Ahart 2015-10-9 20542 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  SEINET10935957  Heliotropium europaeum Mary Susan Taylor 1975-10-3 Taylor 943 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
  CHSC100948  Hemizonella minima R. A. Schlising 1980-6-10 3671 Butte Carpenter Ridge, along Humboldt Road, 1.9 miles northeast of junction with Highway 32 at Lomo. 1356 Comment
  CHSC30710  Hemizonella minima M. S. Taylor 1980-5-27 2705 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  JEPS108568  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top 1317 Comment
  UC186058  Hemizonia congesta subsp. luzulifolia A. A. Heller 1913-10-7 11147 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  UC726326  Hemizonia congesta subsp. luzulifolia A. A. Heller 1941-9-13 16310 Butte 9 mi from Chico (Oroville Road) Comment
  SEINET10971134  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1980-8-15 Taylor 3249 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC75993  Herniaria hirsuta subsp. hirsuta Lowell Ahart; Vernon H. Oswald 1999-8-13 8158 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
  CHSC30420  Hesperevax acaulis var. acaulis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-12 552 Butte 1.0 mi E of Palermo-Honcut Hwy, 100 m S of Melody Lane. 48 Comment
  CAS-BOT-BC175992  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  CHSC66953  Hesperolinon californicum James D. Jokerst 1992-5-19 3360 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. 97 Comment
  CHSC67247  Hesperolinon californicum James D. Jokerst; Barbara Castro 1992-5-19 3351 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. Collected at the veiny Monardella rediscovery site. 76 Comment
  CHSC84022  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC109201  Hesperolinon micranthum B. Castro; L. P. Janeway 2004-6-13 1468 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road, 2.25 air mi E of Forbestown; near headwaters of costa Creek; p.15 rd mi NW of jct with Abernathy Rd. 829 Comment
  CHSC41914  Hesperolinon micranthum Lowell Ahart 1983-8-16 4286 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. Comment
  CHSC66687  Heteranthera limosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8084 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a drainage in the NW corner of Tract 9.1, Sanctuary I. 30 Comment
  CAS-BOT-BC143633  Heteromeles arbutifolia A. A. Heller 1913-12-5 11149 Butte In the canyon of Big Chico Creek east of Chico 91 Comment
  SEINET10483349  Heteromeles arbutifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4113 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC43244  Heterotheca oregona var. compacta Lowell Ahart 1987-9-24 5903 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC1634  Heuchera micrantha var. erubescens V. Holt 1935-5-5 Butte Feather River Canyon, near Pulga. Comment
  CHSC88083  Heuchera micrantha var. erubescens R. D. Fischer 2004-4-2 169 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Big Chico Creek 25' from creek. E. bank below 10 Mile House Road. 213 Comment
  CAS-BOT-BC203378  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Butte Creek on road from Butte City to Oroville Comment
  RSA718792  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC38413  Hirschfeldia incana Vernon Oswald 1983-5-2 413 Butte Upper Bidwell Park, Chico, in a field on the s side of Lindo Channel just upstream from the flood-control gates. 79 Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS98510  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  RSA4243  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. 2000 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
  CAS-BOT-BC311881  Holozonia filipes Lowell Ahart 1981-7-7 2914 Butte Sutter Buttes Area. About 1 mile south of the Oroville Forbestown Road on the Hurleton Swedes Flat Road 600 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC41136  Hordeum marinum subsp. gussoneanum R. L. Ondricek-Fallscheer 1982-3-22 133 Butte Along Hwy 149, ca. 1 mi e of jct. of Hwy 99 and Hwy 149; ca. 11 mi se of Chico (Hwy 32). 60 Comment
  JEPS115819  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south 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
  UCD80562  Hordeum marinum subsp. gussoneanum CNPS SN Foothill Team 2005-5-3 SNFN 0198 c Butte City of Chico, Doe Mill Meadowfoam Preserve, ~200 m at 240 degrees from the preserve gate, and ~75 m from the east fence. 85 Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CHSC29838  Horkelia californica subsp. dissita M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2765 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC46590  Horkelia fusca subsp. tenella Vernon H. Oswald 1989-7-4 3838 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Edge of meadow. 1767 Comment
  POM147760  Horkelia tridentata E. E. Stanford 1927-5-21 382 Butte 4 miles SE of Avery 1220 Comment
  CHSC82271  Horkelia tridentata subsp. tridentata M. S. Taylor 1980-5-8 2613 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CAS-BOT-BC536253  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CHSC65557  Hosackia incana L. P. Janeway 1995-6-20 4804 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC6655  Hydrangea M. MacArthur 1968-6-23 287 Butte Ca. 20 ft. SW PSA bridge and 25 ft. NW of Big Chico Creek, Chico State College. 60 Comment
  UC880782  Hydrophyllum occidentale A. A. Heller 1915-6-26 12030 Butte above Jonesville; Summit of the Sierra Nevada 2133 Comment
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  JEPS121905  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  OBI5722  Hypericum anagalloides H. F. Copeland 1928-7-21 321 Butte Neighborhood of Jonesville. Woods by Jones Crk 1524 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC51366  Hypericum formosum var. scouleri Vernon Oswald 1990-9-11 4448 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. Occasional on the swampy meadow. 960 Comment
  UC600532  Hypericum formosum var. scouleri E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC401196  Hypericum mutilum Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CAS-BOT-BC312934  Hypochaeris glabra John Thomas Howell 1975-6-15 51053 Butte Chico 60 Comment
  CHSC38364  Hypochaeris glabra Vernon Oswald 1983-3-31 234 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  CHSC6140  Hypochaeris glabra B. Wilson 1968-4-19 Butte Se of Cherokee cemetary on w side of Cherokee Rd. Comment
  CHSC92046  Hypochaeris radicata Lowell Ahart 2005-8-19 12333 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 49 Comment
  JEPS119778  Ilex aquifolium Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 -A Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CHSC88058  Iris hartwegii subsp. hartwegii R. D. Fischer 2004-5-30 184 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CHSC84250  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS127197  Isoetes howellii Lowell Ahart 2016-5-30 20881 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
  CHSC113230  Isoetes nuttallii Lowell Ahart 2014-5-2 19426 A Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  JEPS127195  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC61867  Isoetes nuttallii Vernon Oswald; Lowell Ahart 1990-4-9 4158 Butte Feather Falls on Fall River near its junction with the Middle Fork of Lake Oroville 548 Comment
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78209  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mil south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  UC1299264  Jensia rammii Freed W. Hoffman 1949-5-14 3179 Butte 14.7 mi w Challenge (on Oroville Road); Black Bart Monument Comment
  CHSC38471  Juglans californica var. hindsii Vernon Oswald 1983-5-4 427 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 500 ft e of the power lines. 91 Comment
  RSA755422  Juglans californica var. hindsii L. Ahart 2009-8-3 16252 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  CHSC112339  Juncus acuminatus Lowell Ahart 2013-7-9 18829 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
  CHSC78002  Juncus acuminatus Lowell Ahart 2000-5-13 8341 Butte On the margin of the Thermalito Afterbay, on the west 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
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  CHSC61345  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte on the west side of Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET10971375  Juncus balticus Lowell Ahart 1984-5-6 Ahart 4586 Butte T17N R4E. Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 mi N and 3 mi E of Honcut; ca. 12 mi S of Oroville. Foothill Woodland; 50 m. 50 Comment
  SEINET10872252  Juncus bufonius Mary Susan Taylor 1978-4-14 Taylor 1559 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  CHSC96890  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC27063  Juncus bufonius var. congestus Lowell Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. On the bottom of a swale. 50 Comment
  SEINET10472433  Juncus capitatus Lowell Ahart 1983-5-12 Ahart 3979 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  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
  CHSC50696  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte Near the west edge of 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
  CHSC99762  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  UC183502  Juncus effusus subsp. pacificus A. A. Heller 1913-6-4 10773 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  POM219442  Juncus ensifolius H. F. Copeland 1928-8-18 414 Butte Neighborhood of Jonesville. 1524 Comment
  UC398897  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville 1550 Comment
  CDA39194  Juncus ensifolius T. C. Fuller 1962-7-12 9203 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC28656  Juncus exiguus J. D. Jokerst 1979-10-13 383 Butte Along edges of Concow Cr. Intersecton of Concow Rd. 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
  CHSC93495  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  JEPS122235  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC1446143  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-7 1857 Butte 2.5 mi se Paradise (0.5 mi n of Kunkle Reservoir, ca 0.25 mi e of the Pentz-Magalia Hwy) 472 Comment
  CHSC46272  Juncus mexicanus Vernon Oswald 1989-5-1 3756 Butte Butte Sink Wildife Area (w portion of Schohr Ranch), sw corner of the intersection of the main ranch road and Little Dry Creek. 19 Comment
  CHSC94396  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA14052  Juncus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 A Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Colony in disturbed area on moist lakeshore. Perennial. Comment
  CHSC57212  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 A Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 924 Comment
  CHSC31907  Juncus oxymeris L. Ahart 1977-7-19 1482 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS113768  Juncus patens Lowell Ahart 2007-7-15 14305 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 20 yards southeast of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. Comment
  CHSC47575  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Around the edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC47577  Juncus uncialis Lowell Ahart 1983-4-10 3931 Butte On the sides of small vernal pools, near the steel power line, about 1/2 mile northeast of Highway 99 and Pentz Road. 60 Comment
  CHSC59019  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC97112  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  UC1594544  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte about 2 mi w of Oroville Dam (near Longs Bar Monument, on n side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Thermalito Diversion Pool, Lake Oroville Recreation Area 76 Comment
  CHSC101700  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  RSA0111938  Keckiella breviflora var. glabrisepala Lowell A. Ahart 2015-5-5 20143 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. 40 Comment
  CHSC62581  Kelloggia galioides B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 155 Butte Side of jeep road overlooking slopes on south side of Coon Hollow. 1828 Comment
  UC600427  Kelloggia galioides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC10642  Kickxia elatine Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS121302  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  JEPS95924  Kickxia elatine Lowell Ahart 1999-8-13 8132 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
  CHSC31959  Koeleria phleoides J. D. Jokerst 1979-5-2 1216 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CHSC113443  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC340332  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  CHSC31601  Lactuca saligna L. Ahart 1978-9-28 1814 Butte In a wash. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10473869  Lactuca saligna Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5151 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
  CHSC31920  Lactuca serriola M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3377 Butte On road embankment, e side of Lumpkin Rd, ca. 200 ft n of Macabes Creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. 457 Comment
  UCD133543  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham. Comment
  JEPS19936  Lagophylla glandulosa C. C. Parry 1881-11-1 Butte Chico Comment
  JEPS115271  Lagophylla ramosissima Lowell Ahart 2009-6-30 15964 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  JEPS104007  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, ca 1/8 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 326 Comment
  RSA32933  Lamium amplexicaule A. A. Heller 1920-4-10 s.n. Butte Butte County: Chico Comment
  CHSC65892  Lasthenia fremontii Vernon H. Oswald 1996-4-20 7393 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  UCSC004635  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte T20N, R3E, northeast 1/4 Section 24, south of a small stream, open pasture field, a bout 1 mile south of Beatson Hollow, about 1.5 miles southwest of the poor dirt road off Cherokee Road, south part of North Table Mountain, about 7 milse (air) north of Oroville 281 Comment
  UCSC004637  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  UCD106258  Lathyrus jepsonii var. californicus A. A. Heller 1914-5-1 11345 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  SEINET956034  Lathyrus nevadensis E. B. Copeland 1931-1 654 Butte Jonesville. 457 Comment
  POM29222  Lathyrus nevadensis subsp. nevadensis C. C. Bruce 1897-04 2086 Butte Yankee Hill. Comment
  UCD169101  Lathyrus odoratus Ramona Robison 2013-4-15 2 Butte Clay Pit State Vehicular Recreation Area. 41 Comment
  JEPS113267  Lathyrus sphaericus Lowell Ahart 2007-4-30 13698 Butte On both side of Jordan Hill Road, about 1 1/2 miles west of Concow Reservoir 358 Comment
  UC1561885  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC213295  Lathyrus sulphureus J. H. Morrison 1939-5-8 s.n. Butte Durham Comment
  CAS-BOT-BC213296  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte 5 mi. below Magalia on Oroville Road, Northern Sierra Nevada 609 Comment
  CHSC42560  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  RSA726482  Lathyrus sulphureus L. Ahart 2007-4-30 13708 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  SEINET10452337  Lathyrus sulphureus Lowell Ahart 1983-5-28 Ahart 4025 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  JEPS120050  Laurus nobilis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17908 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  JEPS124205  Lavandula Lowell Ahart 2015-4-11 20027 Butte About 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south Oroville. Comment
  CAS-BOT-BC321778  Layia fremontii E. B. Copeland 1903-4-11 s.n., distributed as Baker's 3039 Butte Chico Comment
  CHSC101983  Layia fremontii Carl W. Hill 1980-4-12 8 Butte Ca. 0.5 mi E of intersection of hwy and Skyway, 2 mi SE of Chico, on N side of Skyway. 67 Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  SEINET11806702  Layia fremontii Unknown 1982-1 3 Butte 3 km NE of int. of Chico Canyon Rd & Manzanita Ave., Chico, 1 m from edge of Chico Canyon Rd in S Comment
  SFV4007  Layia platyglossa M. L. Vincent 1961-3-29 39 Butte Sacramento Valley Oroville-Chico Road, 1 mile east of Chico. 60 Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  CHSC49692  Lemna minuta Vernon Oswald 1987-3-20 2294 Butte West side of Hwy 99, 0.6 mi nw of Butte Creek. In a dredger pond. 67 Comment
  JEPS110291  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte In a drain ditch, on the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  SEINET10474774  Leontodon leysseri Mary Susan Taylor 1977-8-16 Taylor 1444 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET516280  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte W side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  JEPS124201  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  SEINET10841504  Lepidium latifolium Mary Susan Taylor 1982-5-22 Taylor 4507 A Butte T17N R1E ne/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, sw corner of jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 60 ft. 68 Comment
  CHSC85395  Lepidium nitidum John Dittes; Josephine Guardino 1992-5-7 484 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 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
  CHSC65686  Lepidium nitidum var. nitidum Vernon H. Oswald 1996-3-22 7254 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CAS-BOT-BC13064  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-6 5511 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC37084  Leptochloa fusca subsp. fascicularis L. Ahart; M. S. Taylor 1982-10-11 3858 Butte Bottom of a ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  UCD63845  Leptochloa fusca subsp. fascicularis H. L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  SEINET10960779  Leptochloa fusca subsp. fascicularis A. Arthur Heller 1919-8-13 Heller 13354 Butte Rice field between Nelson and Richvale in moist adobe. Comment
  UCD64022  Leptochloa fusca subsp. uninervia H. Clem Meith 1968-11-1 Butte Oroville. Comment
  CHSC41470  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 82 Comment
  POM364518  Leptosiphon ciliatus L. Ahart, P. Ahart 1984-5-28 4645 Butte About 1 mi NE of West Branch Bridge, ca. 2 mi S. of Old Yankee Hill, ca. 16 mi. NE of Oroville 450 Comment
  CHSC41368  Leptosiphon filipes B. Castro 1982-4-21 26 Butte Vernal pool area, 0.3 mi w of jct with Hwy 99 on Broyles Rd, ca 10 mi nw of Chico. 60 Comment
  CHSC58937  Leptosiphon harknessii Lowell Ahart 1992-7-29 6887 Butte Near Coon Hollow Creek, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC341795  Lessingia nemaclada R. F. Hoover 1965-10-16 9720 Butte Deer Creek Road east of Chico Comment
  CAS-BOT-BC341796  Lessingia nemaclada Rimo Bacigalupi; G. T. Robbins 1955-7-15 5305 Butte Rim of Butte Creek Canyon, along Chico-Paradise road, about 5 miles below and southwest of Paradise 304 Comment
  CHSC63698  Lessingia nemaclada Lowell Ahart 1994-10-8 7550 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 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
  UC368031  Lessingia virgata John B. Leiberg 1900-9-28 5375 Butte 10 mi e Oroville; Buffalo Ranch 609 Comment
  CHSC3315  Leucojum aestivum M. Gregg 1966-3-13 42 Butte CSC campus. Behind dining hall, Chico. Comment
  CHSC29375  Lewisia nevadensis R. A. Schlising; R. Banchero 1980-6-2 3632 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CHSC113467  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC42590  Ligusticum grayi Vernon Oswald 1985-7-2 1879 Butte Scotts John Rd. 0.6 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  UC2026869  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  JEPS120070  Ligustrum sinense Lowell Ahart 2012-6-21 18208 Butte On the south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS117406  Lilaea scilloides Lowell Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  SEINET10469576  Lilium pardalinum Mary Susan Taylor 1978-7-19 Taylor 1735 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  JEPS122073  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC30087  Lilium washingtonianum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3211 Butte Humboldt Peak, s end of pead, and w side off the trail. 2154 Comment
  CAS-BOT-BC133052  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  RSA727543  Limnanthes alba Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills: along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset. 701 Comment
  SEINET6670254  Limnanthes alba M. Plotkin 1997-3-21 12 b Butte Northeast of Chico Municipal Airport, south of dirt road diverging east from Hicks Road where Hicks Road makes a sharpturn west, 100 feet east of airport fence 91 Comment
  CHSC88867  Limnanthes alba subsp. alba Christine Hantelman 2000-5-3 87 Butte In drainage cut on north side Wookey Road, 0.5 mi east of Meridian. 1920 Comment
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Apr 7 2008
  CHSC60582  Limnanthes alba subsp. versicolor Vernon H. Oswald; Lowell Ahart 1993-4-21 5288 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  HSC93980  Limnanthes douglasii subsp. rosea Mary Drumm 1996-3-17 16 Butte 10 mi. N of Chico on Hwy. 99 where 99 intersects Hamilton Norde Cana Rd. 61 Comment
  SJSU15294  Limnanthes douglasii subsp. rosea Lisa Morton 2002-3-24 11 Butte Upper Bidwell Park, Base of N. Rim Trail 50 Comment
  CHSC67553  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte Doe Mill population E of Butte Creek Diversion Channel, S of Doe Mill Rd. In a vernal pool. 80 Comment
  CHSC67556  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3242 Butte Rancho Arroyo Population along dirt road ca. 0.25 mi E of Stern's location. 79 Comment
  CHSC84877  Limnanthes floccosa subsp. californica C. Boggs 2003-3-20 47 Butte Dove Ridge Preserve, south of Gold Run Creek. Comment
  HSC93613  Limnanthes floccosa subsp. californica James D. Jokerst, M. S. Taylor 1980-3-20 481 Butte 0.3 mi. E of El Monte Ave., between Hwy. 32 and Humboldt Rd., E side Chico. Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  CHSC114380  Limnophila X ludoviciana Cass 2012-10-31 Butte Nelson; Aguas Frias Road and Nelson Road. Comment
  CHSC40393  Limosella acaulis Lowell Ahart 1985-4-20 4876 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  SEINET12318323  Linanthus filipes E. D. Osman 1978-1 20 Butte ca 7.8 mi N of Chico and 200 E of Cohasset Hwy 76 Comment
  CHSC113530  Lindernia dubia var. anagallidea Lowell Ahart 2014-9-23 19868 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
  CHSC64017  Lindernia dubia var. anagallidea B. Castro 1987-8-29 214 Butte At S edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 miles E of Hwy 99 bridge. 60 Comment
  CHSC65208  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC44406  Linum bienne Lowell Ahart 1988-6-23 6076 Butte In deep ditch, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC96951  Lipocarpha micrantha Lowell Ahart 2007-7-8 14273 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  UC1562290  Lipocarpha micrantha Lowell Ahart 1990-7-4 6547 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (along McCabe Creek); , McCabe Creek 243 Comment
  CHSC27911  Listera convallarioides M. S. Taylor 1978-7-19 1739 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 152 Comment
  CHSC47074  Listera convallarioides R. A. Schlising; B. Castro, L. Janeway 1988-7-30 4651 Butte NE part of county, on Snow Mountain Ridge. 1950 Comment
  SEINET10904710  Lithocarpus densiflorus Mary Susan Taylor 1975-2-23 Taylor 391 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CAS-BOT-BC430882  Lithophragma bolanderi Lowell Ahart 1982-5-8 3421 Butte At the Forbestown Res. 700 Comment
  SEINET10483073  Lithophragma bolanderi Mary Susan Taylor 1980-4-6 Taylor 2445 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC42858  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte On a black lava rock, near seeps, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC33697  Lithophragma parviflorum var. trifoliatum L. Ahart 1981-4-9 2754 Butte Peter Ahart Ranch. Under oak trees along banks of North Honcut Creek, ca. 1 mi n and 3 mi e of Honcut. 213 Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  SEINET10497330  Lithospermum californicum Mary Susan Taylor 1981-4-8 Taylor 3511 Butte T22N R4E se sec 1, Pulga SW quad. On dry serpentine embankment, w side of Ponderosa Way, along Rocky Ridge, ca. 5.5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 2900 ft. 884 Comment
  CHSC6633  Lolium M. MacArthur 1968-6-16 350 Butte 20 ft. SW of Big Chico Creek, just S of Esplanade Bridge, Chico State College campus. 60 Comment
  SEINET10507503  Lolium temulentum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4068 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC37386  Lomatium caruifolium var. denticulatum R. A. Schlising 1980-4-28 3577 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Tharmalito Afterbay. Comment
  CHSC38737  Lomatium caruifolium var. denticulatum Vernon Oswald 1983-3-26 210 Butte Upper Bidwell Park, Chico, in the grassy flat on the north side of Horseshoe Lake. 102 Comment
  CHSC42599  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-4-30 1735 Butte Chico Municipal Airport near the e end of Piper Ave. 82 Comment
  JEPS25803  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  CHSC90624  Lomatium dasycarpum subsp. tomentosum Steven H. Roth 1980-4-25 17 Butte 50 m north of Big Chico Creek at Diversion Dam in Upper Bidwell Park, Chico. Comment
  CHSC42613  Lomatium macrocarpum Vernon Oswald 1985-4-16 1720 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. 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
  CHSC116692  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 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 southeast of Oroville. 57 Comment
  CHSC32635  Lomatium utriculatum M. S. Taylor; L. Hanson 1981-4-2 3477 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  CHSC59296  Lomatium utriculatum J. L. Guardino 1992-4-18 13 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  POM319309  Lonicera Patricia Wilder 1971-6-23 5197 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  CAS-BOT-BC240447  Lonicera hispidula H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico Comment
  CAS-BOT-BC240450  Lonicera hispidula Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC44384  Lonicera hispidula Lowell Ahart 1988-6-23 6067 Butte Just east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CAS-BOT-BC240683  Lonicera interrupta Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut. Near Honcut Creek 50 Comment
  CAS-BOT-BC241435  Lonicera involucrata var. involucrata A. A. Heller 1928-7-10 14651 Butte At Butte Meadows Comment
  CAS-BOT-BC241436  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2072 Comment
  SEINET10484212  Lotus Mary Susan Taylor 1981-5-5 Taylor 3602 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SEINET10451957  Lotus argophyllus var. fremontii Mary Susan Taylor 1981-5-7 Taylor 3628 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
  SEINET10451959  Lotus argophyllus var. fremontii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4162 Butte T21N R6E sw sec 33. Along Bean Creek Rd, ca. 2 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Foothill Woodland; 800 m. 800 Comment
  UC1562314  Lotus grandiflorus var. macranthus Vernon Oswald and Lowell Ahart 1990-6-27 4324 Butte ca 0.5 mi (air) nne Junction House (Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, e side of Oro-Quincy Hwy) 1097 Comment
  SEINET10906991  Lotus nevadensis Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5224 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  JEPS114722  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  UC1609078  Lotus oblongifolius Lowell Ahart 1993-6-26 7009 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  UC392240  Lotus oblongifolius var. oblongifolius E. B. Copeland 1929-7-1 Butte Butte Creek Jonesville 1550 Comment
  POM253436  Lotus unifoliolatus A. H. Heller 1938-7-20 15289 Butte 7 miles east of Chaparral. 1524 Comment
  CHSC112874  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC112881  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC28457  Ludwigia peploides R. A. Schlising; R. Banchero 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at W margin of county at Sacramento River and Ord Ferry Road; in slough. Comment
  UC1191767  Ludwigia peploides subsp. peploides Herbert L. Mason and Verne Grant 1946-8-14 13019 Butte canal near big pond on Sacramento Outing Club; Butte Sink, Sacramento Outing Club Comment
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  UC727080  Lupinus A. A. Heller 1938-4-3 15010 Butte between Pebtz and Cherokee; between Pebtz and Cherokee Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  SEINET10488450  Lupinus andersonii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4250 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
  CHSC57378  Lupinus bicolor Sean Brown 1990-4-17 15 Butte Vic. covered bridge, s bank of Butte Ck., ca. 11.6 km ese of Chico. 120 Comment
  SFV11554  Lupinus bicolor M. L. Vincent 1964-4-8 499 Butte Pentz Road, 0.25 miles west of Barnum Road. Comment
  JEPS107276  Lupinus bicolor var. pipersmithii Lowell Ahart 2005-4-18 11733 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
  NY15811  Lupinus caeruleus A. A. Heller 1940-4-28 15561 Butte Along the roadside between the radio station and Hooker Oak, east of Chico...Belt of the Lower Sonoran Life Zone. Comment
  CHSC87808  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  UC725984  Lupinus latifolius var. columbianus A. A. Heller 1919-6-7 13224 Butte Snow Mountain Comment
  UCD109258  Lupinus nanus Michael A. Vincent; Ethan H. Freid 1998-4-6 8117 Butte Table Mountain. Comment
  UCR237310  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18762 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC103726  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC113126  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC38511  Lupinus nanus var. vallicola Vernon Oswald 1983-5-7 440 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  RSA754855  Lupinus nanus var. vallicola L. Ahart 2009-4-26 15618 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC83988  Lupinus pachylobus Lowell Ahart 2003-4-8 10050 Butte Along the dirt road, about 1/8 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 326 Comment
  SEINET7040276 Image available Lupinus pachylobus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate 40 [presently Route 70]. Oroville Quadrangle UTM Zone 10, 620674mE, 4386722mN. 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
  RSA126017  Lupinus stiversii E. K. Balls 1957-5-22 22510 Butte Near Tobins, about 7 mi. ne. Butte-Plumas Co. line. 640 Comment
  CHSC33674  Lupinus succulentus L. Ahart 1981-5-16 2806 Butte In Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  SEINET12164069  Lupinus vallicola F. C. Davis 1982-1 13 Butte ca 35m S of Little Chico Crk and 2.4km E of Hwy 99, ca 3.5km E of Chico 60 Comment
  SEINET10491010  Lupinus vallicola subsp. vallicola Taylor 1981-5-21 Taylor 3762 Butte Paradise se quad. S side of lake concow, ca. 5 Mi e of paradise. Associates: Viola lobata. 640 Comment
  JEPS117605  Luzula cascadensis Lowell Ahart 2010-9-28 17260 Butte West edge of a 10 acre meadow, about 50 yards east of the poor dirt road, about 20 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 1886 Comment
  UC1609496  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  CAS-BOT-BC436645  Luzula comosa var. laxa H. F. Copeland 1929-6-11 1244 Butte Jonesville 1524 Comment
  CAS-BOT-BC436646  Luzula comosa var. laxa H. F. Copeland 1920-7-11 71 Butte Scotch John Meadows 1828 Comment
  UC600795  Luzula comosa var. laxa H. F. Copeland 1932-7-17 Butte In damp woods across road from Copeland Cabin (Jonesville); Jonesville 1550 Comment
  CHSC43793  Luzula divaricata Vernon Oswald; Lowell Ahart 1987-7-1 3085 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. Just above the high-water level on the s side of the large lake. 1935 Comment
  CHSC98999  Luzula macrantha Lowell Ahart 2008-5-30 14793 Butte Dry bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  JEPS115962  Luzula macrantha Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CAS-BOT-BC441208  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3.5 miles SW of Oroville 33 Comment
  SEINET10472542  Luzula macrantha Mary Susan Taylor 1981-3-24 Taylor 3435 A Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC34183  Luzula parviflora L. Ahart 1981-9-15 3166 Butte Along the banks of French Creek, below the swamp and where the rd forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC42709  Lycopus americanus Lowell Ahart 1987-6-9 5743 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC58923  Lycopus americanus Lowell Ahart 1992-7-23 6830 Butte Growing on the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  JEPS88581  Lycopus americanus Vernon H. Oswald and Lowell Ahart 1996-7-22 8079 Butte edge of farm rd. crossing branch of Angel Slough w. Refuge H.Q.'s (s.e. corner of Tract 1-Sanctuary 1, U.S. Fish & Wildlife Service parcel betw 7 Mile Lane & Sacramento R.); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC55800  Lythrum hyssopifolia Vernon H. Oswald 1991-11-2 4885 Butte Rancho Arroyo Chico. Upper Bidwell Park Chico, at a seep between Park Rd. and the north rim along the the first intermittent drainage west of Bear Hole Parking Area. 182 Comment
  CHSC46975  Lythrum portula Vernon H. Oswald 1989-9-27 4019 Butte Paradise Lake ca. 3 mi n of Magalia. 774 Comment
  CHSC97205  Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of 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
  JEPS98519 Image available Lythrum salicaria Lowell Ahart 2000-7-2 8551 Butte Wet area on the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. 73 Comment
  SEINET11268343  Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte About 1/2 miles west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville.; 0 43 Comment
  CAS-BOT-BC342653  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342704  Madia elegans A. A. Heller 1914-8-13 11684 Butte Hills 8 miles north of Oroville Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  UCD134240  Madia elegans Robbins; Raynor 1943-6-1 s.n. Butte Feather River Canyon near Pulga. Comment
  UCR219267  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15586 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  SEINET10475204  Madia elegans subsp. elegans Mary Susan Taylor 1982-6-24 Taylor 4732 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS117316  Madia exigua Lowell Ahart 2010-5-7 16620 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  JEPS120500  Madia exigua L. P. Janeway 2012-6-7 10861 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. Comment
  POM362160  Madia exigua L. S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CAS-BOT-BC342968  Madia gracilis Lowell Ahart 1982-9-13 3826 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  POM219437  Madia gracilis subsp. gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  CHSC67640  Madia subspicata James D. Jokerst 1980-5-28 806 Butte Ca. 0.25 mi SW of junction of Lower Wyandotte Rd. and Foothill Blvd. SE of Oroville. Comment
  CAS-BOT-BC345238  Madia subspicata Bruce G. Baldwin; Gerald D. Carr; Lowell Ahart 1988-6-9 713 Butte Peter Ahart Ranch, 1 mile north, 3 miles east of Honcut Comment
  CHSC49662  Maianthemum racemosum Vernon Oswald 1985-6-6 1814 Butte Abandoned RR right of way 0.75 mi s of Doon Camp located on the Skyway e of Lovelock. 853 Comment
  CHSC47079  Maianthemum stellatum R. A. Schlising; L. Janeway 1988-7-1 4553 Butte N part of county, NE of Snow Mountain. Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC512736  Maianthemum stellatum H. F. Copeland 1929-6-12 1255 Butte Jonesville, in woods on banks of Jones Creek 1524 Comment
  CHSC34706  Malacothrix floccifera M. S. Taylor 1981-5-21 3793 A Butte E side of Mayaro Rd, ca. 1/2 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70. 609 Comment
  CHSC1038  Malva sylvestris J. Baynes 1929-4-21 Butte College Campus, Chico. 57 Comment
  CHSC34011  Malvella leprosa L. Ahart 1981-7-26 3012 Butte Ca. 1/2 mi s of Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley; near the equipment barn. 35 Comment
  CHSC3643  Marah fabacea var. agrestis Alice L. Stoll 1966-2-26 25 Butte About 80' N. E. Of Manzanita Ave. on Centennial Ave., Chico. Comment
  CAS-BOT-BC67810  Marsilea vestita Lowell Ahart 1987-8-8 5856 Butte About 12 miles south-east of Oroville - along North Honcut Creek, about 2 miles north and 3 miles east of Honcut. 67 Comment
  CHSC90233  Meconella californica Ross L. Jones 1989-4-12 24 Butte Ca. 100 m s of Butte Creek and 200 m w of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  UC1601096  Meconella californica Mrs. R. M. Austin Mar 1896 96 Butte Little Chico Creek Comment
  CAS-BOT-BC422639  Meconella californica W. R. Ernst 1958-3-27 215 A Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  CAS-BOT-BC422642  Meconella californica Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  SEINET12091625  Meconella californica S. E. Bigbee 1984-1 37 Butte Ca 50 yds S of Butte Creek and ca 350 yds W of Covered Bridge, 6.2 mi ESE of Chico 121 Comment
  UCD106765  Medicago arabica P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CDA42874  Medicago lupulina L. Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  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
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  CHSC70851  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  CAS-BOT-BC271134  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CAS-BOT-BC271135  Melica aristata E. B. Copeland 1932-7-19 s.n. Butte Jonesville, Butte Creek Canyon 1550 Comment
  CHSC96877  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  RSA700242  Melica aristata L. Ahart 2004-7-23 11299 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam., About 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  UCD86345  Melica bulbosa Copeland 1931-6-22 606 Butte Jonesville. 609 Comment
  CAS-BOT-BC269373  Melica californica Lowell Ahart 1987-5-9 5581 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
  JEPS106314  Melica geyeri Lowell Ahart 2004-6-22 11110 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile 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
  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
  CHSC38831  Melica torreyana Vernon Oswald 1983-4-10 320 Butte Upper Bidwell Park, Chico, ca. 500 ft w of Day Camp. In bed of an old oxbow of Chico Creek. 91 Comment
  CHSC954  Melilotus indicus A. Koopman 1929-5-7 Butte CSC Campus. 57 Comment
  CDA5721  Melissa officinalis L. Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Fall. Comment
  CHSC111140  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC21016  Mentzelia laevicaulis M. S. Taylor 1975-10-3 946 Butte Scattered on sandbar on Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC50109  Menyanthes trifoliata Vernon Oswald 1990-5-9 4194 Butte Boy Scout Camp at Chico Meadows, ca. 1 mile north of Butte Meadows. Growing in a boggy area on the seepy slope slightly northeast of the 'swimming hole. 1295 Comment
  SD4159  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 Butte Jonesville 1500 Comment
  SD6717  Mertensia sibirica Mrs. R. M. Austin 1882-1 Butte Comment
  CAS-BOT-BC428764  Micranthes californica Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC428766  Micranthes californica Ira L. Wiggins 1925-3-25 1431 Butte 1/2 mi W. of Pence [Pentz] on Pence [Pentz] - Durham Road. Comment
  CHSC82595  Micranthes californica Samantha Mackey Hillaire 2002-3-18 307 Butte Table Mountain, on a cliff overlooking Beatson Hollow next to a waterfall. On the south side of a stream channel. 365 Comment
  CHSC3287  Micranthes integrifolia M. L. Hillier 1966-3-6 Butte 4 miles s.e. of C.S.C. Admin. build. on the Skyway to Paradise about 50 ft. from the rd. on the s. side of Butte Creek. Comment
  CHSC3638  Micranthes integrifolia Alice L. Stoll 1966-3-7 50 Butte Near Covered Bridge, Honey Run Road, Paradise. Comment
  CHSC44236  Micranthes odontoloma V. Oswald; L. Ahart 1988-7-13 3588 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CAS-BOT-BC429202  Micranthes oregana A. A. Heller 1914-6-22 11493 Butte Chico Meadows 1219 Comment
  UCD146243  Micropus californicus Daniel S. Park; J. P. Zabala 2010-4-10 12 Butte Table Mt. Cherokee Rd. 351 Comment
  SEINET7042712  Micropus californicus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC39531  Micropus californicus var. californicus Lowell Ahart 1983-6-12 4043 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte 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
  UC519235  Micropus californicus var. californicus C. G. Albertus 1933-6-6 1424 Butte 0.25 mi w Pentz 137 Comment
  POM33622A  Microseris C. C. Bruce 1897-05 1993 Butte [No locality information provided] Comment
  RSA697049  Microseris acuminata L. Ahart 2003-4-8 10037 Butte About 200 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 325 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
  UCD80105  Microseris acuminata CNPS SN Foothill Team 2005-3-30 SNFN 0071 Butte CDFG North Table Mountain Wildlife Area, approximately 2 mi. west of parking and 200-300 m north. 372 Comment
  CAS-BOT-BC348692  Microseris acuminata K. L. Chambers 1952-5-17 410 Butte Ca. 2 mi. s.w. of Paradise on canyon rim road to Chico, on flat table mountain high above Butte Creek Comment
  CHSC83935  Microseris sylvatica L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7756 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.9 km north of the Spillway Boat Ramp. 280 Comment
  CHSC28938  Mimetanthe pilosa M. S. Taylor 1978-9-8 1880 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  SEINET10570407  Mimulus Mary Susan Taylor 1978-7-21 Taylor 1825 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  HSC72762  Mimulus aurantiacus var. grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd., 2.2 mi. S of jct. with Big Bend Rds., 3 mi. S of Jarbo Gap on Hwy. 70 427 Comment
  CDA14055  Mimulus bicolor G. F. Hrusa, T. D. Wilfred 1997-5-1 13702 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  SEINET10570195  Mimulus bicolor Mary Susan Taylor 1980-5-8 Taylor 2590 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  RSA4112  Mimulus breweri E. B. Copeland 1930-6-28 461 Butte Jonesville, Butte 'Scotch John' Meadow Comment
  RSA535825  Mimulus douglasii David M. Thompson, L. Ahart 1988-3-22 850 Butte N of Honcut. Peter Ahart Ranch, entrance 1.2 mi N of Honcut store along Ahart Road. 38 Comment
  CDA13864  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-7 13722 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  UCD122718  Mimulus glaucescens F. J. Fuller 1982-4-18 20 Butte ca. 0.5 mi sw of Hwy 32 on Crown Pt Rd, 11 mi nw of Chico. 548 Comment
  JEPS86611  Mimulus guttatus L. R. Heckard, J. C. Hickman, M. Wolf, and S. D'Alcamo 1989-4-12 6727 a Butte n Oroville (off Cherokee Rd.); Table Mountain Comment
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET8340795  Mimulus guttatus A. A. Heller 1915-5-4 11868 Butte 8 miles north of Oroville. Comment
  SEINET10570235  Mimulus kelloggii Mary Susan Taylor 1981-4-5 Taylor 3485 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  RSA712757  Mimulus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. (NAD83) 762 Comment
  SEINET10962487  Mimulus pilosus Mary Susan Taylor 1978-9-8 Taylor 1880 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  RSA535418  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte NW of De Sabla. 0,25 mi N of Doe Mill Road along Garland Road. 600 Comment
  UC129114  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM5163  Mimulus tricolor A. A. Heller, H. E. Brown 1902-5-15 5554 Butte Near Biggs. From type locality. Comment
  RSA535804  Mimulus tricolor David M. Thompson, L. Ahart 1988-3-22 849 Butte N of Honcut. Peter Ahart Ranch (entrance 1.2 mi N of Honcut store along Ahart Road.) 1 mi E of ranch gate, then 0.5 mi N. 35 Comment
  CHSC6292  Minuartia californica W. O. Baum 1967-3-12 6 Butte In triangle area, on e side of Cohasset Rd. and 3.2 mi n of Chico. 60 Comment
  HSC43125  Minuartia californica Maralyn O'Meara 1974-4-20 278 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  JEPS110247  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  SEINET11933236  Minuartia douglasii S. E. Bigbee 1984-1 62 Butte Ca 400 yds W of Cherkee Rd on Table Mt., ca 12 mi N of Oroville 396 Comment
  SEINET8263327  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  CHSC43035  Monardella sheltonii L. P. Janeway 1987-6-8 2179 Butte 4.5 mi south of Big Bar Mtn (via rd). 899 Comment
  CHSC67981  Monardella sheltonii James D. Jokerst 1989-7-3 3124 Butte Hwy. 70 and Pulga Rd. Comment
  CHSC29390  Montia chamissoi Robert Schlising; R. Banchero 1980-6-2 3630 Butte 0.1 mi s of jct Humboldt Road and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  RSA636051  Montia fontana Michael A. Vincent, Ethan H. Freid 1998-4-6 8127 Butte Table Mountain Comment
  CHSC45101  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  CAS-BOT-BC260534  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  CAS-BOT-BC260535  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville 1524 Comment
  RSA4652  Muhlenbergia filiformis E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UC600755  Muhlenbergia filiformis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  UCD86613  Muhlenbergia filiformis A. A. Heller 1917-7-26 12832 Butte Butte Meadows. Comment
  CAS-BOT-BC275344  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River, Oroville 53 Comment
  CDA30213  Muhlenbergia mexicana L. Ahart 2009-7-9 16023 Butte On the east edge 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
  CHSC28540  Muhlenbergia rigens M. S. Taylor; J. D. Jokerst 1979-10-13 2253 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC36084  Myosotis discolor R. A. Schlising; R. Banchero 1981-5-20 4058 Butte E part of county, E of village of Feather Falls, along the Fall River. Comment
  CHSC33701  Myosurus sessilis L. Ahart 1981-4-6 2747 Butte SE of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 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
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  CHSC55809  Najas gracillima Vernon H. Oswald; Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. 30 Comment
  CHSC33665  Nama lobbii R. A. Schlising; M. Merryman, R. Banchero, J. Fuller 1981-6-20 4091 Butte E of Inskip, 5.8 miles E of crossing of West Branch of Feather River. Immediate roadside. Comment
  CHSC56835  Nassella pulchra John Copeland 1980-3-28 18 Butte Ca 250 yds north of dirt access road, 0.75 mi east of Meridian Road, 1.5 mi north of Hwy 99, 5.2 mi north of Chico. Comment
  JEPS121907  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SD3930  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 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
  CHSC47065  Navarretia filicaulis R. A. Schlising; P. Broyles 1988-7-9 4573 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  LA206699  Navarretia filicaulis H. F. Copeland; 1932-6-24 sn Butte near Hog Springs, about 5 mi. N of Chico, on the Humboldt Road Comment
  UC196280  Navarretia filicaulis A. A. Heller 1914-7-24 11626 Butte near Forest Ranch 731 Comment
  CHSC36715  Navarretia heterandra D. H. Ikeda 1981-5-11 359 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC52107  Navarretia leucocephala Kimberly J. Weir 1976-4-15 4 Butte In vernal pool, ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  UCD48505  Navarretia leucocephala H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  HSC32628  Navarretia leucocephala David Johnson 1974-4-20 20 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  UCD48502  Navarretia leucocephala W. R. Powell 1968-4-23 1472 Butte 2 miles south-southeast of Oroville, Butte County, California. 71 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
  JEPS95795  Navarretia leucocephala subsp. leucocephala Lowell Ahart 1999-5-21 8072 Butte about 5 miles (air) southwest of Gridley; ; 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  RSA717291  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11818 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UCD80642  Navarretia leucocephala subsp. leucocephala CNPS SN Foothill Team 2005-5-3 SNFN 0198 d Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  RSA755443  Navarretia pubescens L. Ahart 2009-5-23 15727 Butte About 20 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  UC1008720  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  UCD80645  Navarretia pubescens CNPS SN Foothill Team 2005-5-28 SNNR 0207 b Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek where the plateau above the creek ends. 159 Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  CHSC36818  Navarretia viscidula subsp. purpurea D. H. Ikeda 1980-5-26 380 Butte Bidwell Park, Chico. Near end of paved road at old rifle range. Comment
  CHSC29399  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-6-17 3724 Butte N of Magalia and De Sabla along Skyway, ca 1.5 mi SW jct with Coutelenc Road at Lovelock. 780 Comment
  UC1609062  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC42132  Nemacladus interior Lowell Ahart 1984-6-8 4669 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 411 Comment
  JEPS115823  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 yards southwest 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
  POM252968  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte On a roadside bank sheltered by a stone wall on the Cohasset Road beyond the Richardson Springs road. Comment
  SD60314  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte Along Chico creek about 4 miles east of Chico in the Quercus lobata belt. Comment
  SEINET10497053  Nemophila heterophylla Mary Susan Taylor 1981-3-16 Taylor 3411 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC45840  Nemophila maculata Lowell Ahart 1973-3-24 182 Butte Along a small wash, along Swedes Flat Road, about 1 mile east of Rocky Honcut Creek. 457 Comment
  POM73919  Nemophila menziesii var. menziesii C. C. Bruce 1898-05 s.n. Butte [No location information on label.] Comment
  SEINET10814721 Image available Nemophila menziesii var. menziesii H. E. Brown 1897-5-15 Brown 145 Butte Clear Creek. 213 Comment
  SEINET260328  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Boat launch area off the Oroville Quincy highway near Canyon Creek about 12 mi NE of Oroville 270 Comment
  CHSC10544  Nicotiana glauca Lowell Ahart 1962-4-10 Butte Near Gridley. 36 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
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  SEINET10472782  Odontostomum hartwegii Mary Susan Taylor 1976-4-27 Taylor 1081 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CAS-BOT-BC349984  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC349986  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC104833  Orobanche fasciculata Lowell Ahart 2010-6-12 16809 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. 291 Comment
  CHSC115330  Orobanche fasciculata Lowell Ahart 2015-4-13 20034 Butte On the north side of Rim Road, about 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. 830 Comment
  JEPS124297  Orobanche fasciculata Lowell Ahart 2015-4-13 20034 Butte About 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  CDA42032  Orobanche uniflora subsp. occidentalis H. K. Wagnon 1957-4-28 712 Butte About five miles north of Oroville on road to Cherokee. 0 Comment
  UC426927  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 457 Comment
  SEINET12326960  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 2.5 mi NE of jct Lassen Ave & Cohasset Rd, near Chico, 500 ft N of roadway 152 Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  RSA20870  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8331 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  POM43591  Orthocarpus erianthus R. M. Austin 1883-03 28 Butte [No location information provided.] Comment
  POM252807  Orthocarpus hispidus A. A. Heller 1938-7-20 15287 Butte Upper end of Snag Lake, East of Chaparral. 1524 Comment
  JEPS87150  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  UCD138168  Ottelia alismoides Donald E. Seaman 1977-9-10 s.n. Butte on Lattimore portion of Biggs Rice Station. Comment
  CHSC9144  Oxalis rubra L. W. Gray 1970-5-1 28 Butte Collected at 710 W. 3rd street on lawn in front of house, Chico. Comment
  CHSC48196  Packera eurycephala var. lewisrosei Vernon Oswald 1984-5-21 1198 Butte Magalia Serpentine. 707 Comment
  HSC6152  Packera eurycephala var. lewisrosei L. S. Rose 1967-6-11 67103 Butte 3 mi. S of Pulga, Feather River Canyon Comment
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC42376  Panicum acuminatum Lowell Ahart 1987-5-27 5715 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
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC38838  Panicum acuminatum var. acuminatum Vernon Oswald 1983-5-31 587 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 200 ft e of Day Camp. 91 Comment
  CHSC58289  Panicum capillare Lowell Ahart 1992-5-6 6749 Butte Along the west side of Lone Tree Road, about 1/4 mile south of the intersection of Powerhouse Hill Road and Lone Tree Road, about 4 miles south of Oroville. 60 Comment
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC45108  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  RSA769674  Parvisedum pumilum L. Ahart 2009-4-22 15603 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
  SD34487  Paspalum dilatatum A. A Beetle 1941-6-27 2894 Butte 4 mi. N of Gridley Comment
  CHSC94974  Paspalum distichum Lowell Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1 1/2 mile north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CAS-BOT-BC258768  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CAS-BOT-BC202817  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 5 miles north-east of Oroville 609 Comment
  CHSC90482  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
  JEPS108767  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  POM44028  Pedicularis aurantiaca C. C. Bruce 1898-05 2419 Butte Paradise. Comment
  CHSC26838  Pedicularis semibarbata M. S. Taylor 1978-6-24 1647 Butte Humboldt Summit, Butte Co and Tehama Co line. 2133 Comment
  JEPS116138  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC11794  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  CAS-BOT-BC67557  Pellaea mucronata Lowell Ahart 1969-3-27 s.n. Butte Honcut - Peter Ahart Ranch 45 Comment
  SEINET10529801  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5222 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  NY571181  Penstemon azureus var. azureus J. T. Howell 1962-6-16 37546 Butte Sierra Nevada; Magalia 731.5 Comment
  UC1602275  Penstemon deustus var. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville Comment
  NY591792  Penstemon deustus var. pedicellatus A. A. Heller 1915-6-16 12023 Butte Summit of the Sierra Nevada above Jonesville 2133.6 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  SEINET10548027  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1982-6-24 Taylor 4729 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC1870  Penstemon laetus var. leptosepalus 1954-5-30 Butte Flea valley, Concow road, near Stirling. 762 Comment
  NY604513  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  UC103112  Penstemon laetus var. leptosepalus D. Cleveland 1882-7-14 141 Butte Sutton House Comment
  POM219250  Penstemon neotericus H. F. Copeland 1930-7-26 1378 Butte Jonesville. 1677 Comment
  SD4591  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville, rocky north slope 1900 Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  CHSC44908  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mi west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  CHSC29214  Pentagramma triangularis Carl E. Yingst 1980-4-23 13 Butte Ca 20 km ne of Chico, 1.6 km sw of Highway 32. 454 Comment
  CHSC28409  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-9-28 2201 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC63691  Pentagramma triangularis subsp. semipallida Lowell Ahart 1994-10-9 7559 Butte On the north side of the poor road that hoes from Milsap Bar to Mountain Spring House, about 1 mile west of Mountain Spring House and the paved road, about 8 1/2 (air) miles north and 1 1/2 miles east of Feather Falls. 1158 Comment
  CAS-BOT-BC77133  Pentagramma triangularis subsp. semipallida Lowell Ahart 1976-7-7 s.n. Butte Near Little North Fork of Feather River. 50 Comment
  CAS-BOT-BC77134  Pentagramma triangularis subsp. semipallida Lowell Ahart 1980-5-11 2243 Butte 1/4 mile S of Kunkle Res. 500 Comment
  CAS-BOT-BC77086  Pentagramma triangularis subsp. triangularis J. L. Wilson 1970-2-27 235 Butte North bank of Honey Run Road, approx. 50 yds. up hillside in rocks. Ca. 5 mi. east of intersection of Honey Run Rd. 91 Comment
  CAS-BOT-BC77087  Pentagramma triangularis subsp. triangularis Rod O'Sullivan 1977-2-12 4 Butte Little Chico Creek Canyon, 9.2 mi. NE of Chico on Hwy 32 and 1 mile E of Tenmile House, Paradise Quadrangle 268 Comment
  CHSC40216  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1985-6-17 5061 Butte 100 yds south of the dirt raod, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CDA14077  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13960 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  SEINET10454550  Perideridia lemmonii Lowell Ahart 1985-8-11 Ahart 5160 Butte Peter Ahart Ranch about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC38742  Perideridia oregana Vernon Oswald 1983-6-9 657 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 182 Comment
  CHSC33972  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC94565  Persicaria maculosa Lowell Ahart 2006-9-11 13290 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
  UCD99744  Persicaria maculosa J. M. Tucker 1953-8-28 2683 Butte Biggs Rice Experiment Station. Comment
  CHSC94595  Persicaria punctata Lowell Ahart 2006-9-11 13291 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
  CHSC109071  Petrorhagia dubia Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte On the north side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC10585  Phacelia cicutaria Lowell Ahart 1968-4-27 Butte Near Honcut. 45 Comment
  JEPS26746  Phacelia corymbosa P. C. Hutchison 1961-6-9 2102 Butte at Pulga Bridge canyon of the north fork of the Feather River (on hwy US Alt. 40 and side road to Pulga) Comment
  CHSC27844  Phacelia distans Patty L. Venable 1978-4-21 21 Butte 6 mi n of Oroville, 1 mi w of Cherokee Rd. 304 Comment
  CHSC83956  Phacelia distans Lowell Ahart 2003-4-8 10045 Butte About 40 yards and in the canyon west of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 314 Comment
  CHSC33708  Phacelia heterophylla subsp. virgata J. D. Jokerst 1981-5-21 1332 Butte Open area adjacent to road. Ca 1.0 mile NE of Pulga on Pulga Rd. Comment
  CHSC46564  Phacelia heterophylla subsp. virgata V. Oswald; L. Ahart 1989-7-12 3842 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  UC726923  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte along Feather River Hwy 25 mi from Oroville Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  SEINET10497011  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4722 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
  SEINET5520518  Phacelia imbricata S. Dean 1979-4-24 s.n. Butte Highway 70, Feather River Canyon, approximately 20 miles from Oroville 1067 Comment
  UC1046983  Phacelia imbricata Butte just below Los Plumas road junction with the Feather River Highway, about 14 miles northeast of Oroville Comment
  UC478473  Phacelia racemosa E. B. Copeland Jul 11 1931-Jul 13 1931 684 Butte stony ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC49564  Phalaris brachystachys Vernon Oswald 1987-5-1 2362 Butte Rancho Aquas Frias. Collected along Goodspeed-Watt Rd. at the Western Canal. 39 Comment
  CHSC6123  Phalaris canariensis E. Parreno 1968-5-16 114 Butte Vacant lot on e side of e 9th St. bounded by Linden and Willow Sts. opposite the Community Center. Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CHSC39944  Phalaris lemmonii Lowell Ahart 1984-5-10 4600 Butte Ca. 2.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. In a field. 50 Comment
  SEINET10660261  Phalaris lemmonii Lowell Ahart 1982-1 Ahart 3431 Butte Normal size. On dry red soil on bottom of vernal pool in farmed fields, Peter Ahart Ranch, Honcut, ca. 2 mi. NE of Honcut. Common in vernal pool. Valley Grassland. 50 Comment
  CHSC2174  Phalaris paradoxa H. Silberman; D. Isaac 1949-5-19 Butte Grey Lodge State Game Refuge. 24 Comment
  CAS-BOT-BC77372  Philadelphus lewisii Lowell Ahart 1984-6-8 4659 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles northwest of Forbestown 370 Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  SEINET10970383  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1979-5-4 Taylor 1990 A Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  UC201131  Phlox diffusa unknown 1892-6-28 Butte Jonesville Comment
  JEPS123873  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  RSA325114  Phoradendron bolleanum var. densum M. S. Taylor 1975-9-19 918 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  LA209828  Phoradendron juniperinum E. B. Copeland; 1931-7-28 627 Butte Jonesville 1500.0 Comment
  SD1138  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CAS-BOT-BC141243  Phoradendron serotinum subsp. tomentosum Forman T. McLean 1921-10-20 31 Butte Chico Comment
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 Comment
  CDA5821  Physalis lancifolia Margaret Bellue Jul 1949 Butte Near Biggs. 0 Comment
  UC580804  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  CHSC11342  Physalis philadelphica Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA0111916  Pinus contorta var. murrayana H. F. Copeland 1926-3-27 207 Butte Jonesville. 1220 Comment
  CHSC110234  Pinus jeffreyi L. P. Janeway 2012-10-11 11074 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC11775  Pinus monticola E. B. Copeland 1929-7-17 331 Butte Above Jonesville. 2000 Comment
  NY61961  Pinus monticola A. A. Heller 1915-6-26 12033 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  CAS-BOT-BC79017  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  CHSC88624  Pinus ponderosa H. Gray 2003-1-17 Butte Plumas National Forest. Zink Road. 792 Comment
  CHSC77414  Pinus sabiniana Laura Bogni 1997-3-25 6 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 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
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  CHSC27973  Piperia unalascensis M. S. Taylor 1978-7-18 1694 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC40292  Piptatherum miliaceum Ahart; Jokerst 1985-5-10 4965 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC109182  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side of Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC106230  Pistacia chinensis L. P. Janeway; B. Castro 2010-5-23 9977 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek, along Yahi Trail about 200 m southwest of the power lines; on terrace between uplands and the creek. 91 Comment
  UC2026875  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10834170  Pityrogramma triangularis Mary Susan Taylor 1980-6-14 Taylor 2869 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  SEINET10966242  Pityrogramma triangularis Mary Susan Taylor 1980-3-1 Taylor 2348 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET10529960  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-10-6 Taylor 3352 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
  CHSC115000  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  UC75319 Image available Plagiobothrys bracteatus Dr. E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  UC78216  Plagiobothrys bracteatus Mrs. R. M. Austin Apr. 1896 Butte Comment
  UC480697  Plagiobothrys canescens H. F. Copeland 1923-4-1 Butte near Bidwell Park; Chico Comment
  UC726654  Plagiobothrys fulvus A. A. Heller 1938-4-23 15044 Butte on Feather River Hwy 1 1/2 mi from Oroville Comment
  SEINET12275924  Plagiobothrys fulvus Unknown s.n. Butte no further locality Comment
  CHSC47999  Plagiobothrys glyptocarpus var. glyptocarpus Vernon Oswald 1986-4-14 1068 Butte Upper Bidwell Park, Chico, on the edge of the first seep s of Upper Park Rd. and w of Parking Area O. 182 Comment
  JEPS117189  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  JEPS103587  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC11862  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  CHSC23529  Plagiobothrys nothofulvus M. S. Taylor 1976-2-12 993 Butte Ca. 50 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC28985  Plagiobothrys nothofulvus R. A. Schlising 1980-3-23 3523 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC103692  Plagiobothrys shastensis Lowell Ahart 2010-5-7 16619 Butte On rock outcrop, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  UC1537691  Plagiobothrys stipitatus Gordon H. True Jr. 1936-3-26 377 Butte Gray Lodge Refuge 22 Comment
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  UC78203  Plagiobothrys stipitatus Mrs. E. Miles 1887-1 Butte Comment
  CHSC111338  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte Bottom of a small depression, about 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  CHSC35052  Plagiobothrys stipitatus var. micranthus R. Schlising; R. Banchero 1981-5-19 4049 Butte NW of Oroville along Cottonwood Road, 0.5 mile E of jct with Hwy 99. In roadside ditch. 41 Comment
  JEPS117190  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte On Damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  RSA715885  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-4-2 11682 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC30352  Plantago bigelovii J. D. Jokerst 1980-4-17 598 Butte Top of North Table Mountain. 419 Comment
  CHSC42070  Plantago coronopus Kevin Lund 1986-4-15 16 Butte Ca. 13 mi n of Chico on Hwy. 99. Comment
  CHSC96224  Plantago coronopus R. Fischer 2006-5-20 975 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a vernal drainage along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  SEINET10499802  Plantago coronopus Mary Susan Taylor 1975-4-18 Taylor 481 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CHSC26726  Plantago elongata M. S. Taylor 1978-4-14 1550 Butte 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
  CHSC37404  Plantago elongata A. R. Ratcliff; R. A. Schlising 1980-4-6 3547 Butte Jct Chico-Oroville Road, about 5 mi s of Chico. 53 Comment
  JEPS103364  Plantago elongata Lowell Ahart 2002-3-16 9417 Butte On the bottom and sides of a depression, on the N side of a poor dirt road, ca 50 yards N of Highway 32, ca 1/4 mile E of the intersection of Bruce Road and Highway 32, E of Chico. 73 Comment
  JEPS104005  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 348 Comment
  CDA42162  Plantago elongata T. C. Fuller 1958-4-15 5004 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  CHSC41133  Plantago erecta B. Anthony 1967-4-9 43 Butte Bare Hole, along Yahi Trail, Bidwell Park, Chico. 1828 Comment
  RSA0036649  Plantago erecta Lowell A. Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. 143 Comment
  UCD22636  Plantago hookeriana var. californica Joseph Laferriere 1982-4-18 6 Butte 3 miles south of Oroville on Hwy 70, roadside hilltop 1/4 mile south of jet Baggett-Marysville Rd. 65 Comment
  CHSC1222  Plantago lanceolata R. M. Staley 1952-7-5 Butte Paradise. 579 Comment
  SEINET10499810  Plantago lanceolata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4180 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  CHSC88176  Plantago major Lowell Ahart 2004-7-23 11302 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  UCD124510  Plantago major L. E. Hazeltine 1916-6-5 s.n. Butte Chico. Comment
  CHSC86131  Platanthera leucostachys John Dittes 2002-6-29 626 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  CAS-BOT-BC93160  Platanus racemosa John Thomas Howell 1975-6-15 51067 Butte Butte Creek near Chico. 60 Comment
  CHSC39938  Platanus racemosa M. S. Taylor; V. Oswald 1984-4-4 5376 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  RSA325024  Plectritis californica L. Ahart 1984-4-3 4538 Butte Along N Honcut Creek, 1 mile N and 2.7 miles E of Honcut, Peter Ahart Ranch. Foothill Woodland. 50 Comment
  CHSC39940  Plectritis ciliosa Lowell Ahart 1984-4-3 4538 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC38753  Plectritis ciliosa subsp. insignis Vernon Oswald 1983-3-14 172 Butte Upper Bidwell Park, Chico, rim near the head of the ravine at the Rifle Range. 188 Comment
  CHSC103686  Plectritis macrocera Lowell Ahart 2010-4-30 16596 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC32587  Plectritis macrocera J. D. Jokerst; Jeri Donovan 1981-3-21 1261 Butte Ca. 0.5 mi N of Horseshoe Lake (3 mi E of Chico in Bidwell Park). Comment
  POM197072  Plectritis macrocera subsp. grayi H. F. Copeland 1928-4-3 63 Butte Canyon of Butte Creek. Comment
  CHSC86140  Pleuricospora fimbriolata John Dittes 2002-6-29 628 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  SEINET10593496  Poa annua Isle 1969-4-18 ISLE 352 Butte About 30 yards S. of the Pentz-Magalia HW-Pentz Road intersection off the W. side of the Pentz-Magalia HW. 213 Comment
  SEINET10822489  Poa annua Mary Susan Taylor 1975-4-6 Taylor 431 Butte Chico. NE corner of Arcadian and West 4th Avenue. 52 Comment
  CHSC105505  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  JEPS110196  Poa bolanderi Lowell Ahart 2006-7-16 12972 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
  CHSC38844  Poa bulbosa Vernon Oswald 1983-3-31 231 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 50 ft. w of the w entrance to Parking Area S (Brown's Hole); about 2.6 mi e of the power lines. 243 Comment
  CHSC39949  Poa bulbosa Lowell Ahart 1984-4-3 4534 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC54354  Poa compressa Lowell Ahart 1991-6-22 6665 Butte On the west side of Powell Creek, below the high water line of Lake Oroville, east of Springtown Road, Lake Oroville. 243 Comment
  CHSC61546  Poa howellii Lowell Ahart 1993-6-26 7030 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC113420  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  RSA700237  Poa pratensis L. Ahart 2004-7-23 11304 Butte on the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, bout 1.5 miles (air) west of Philbrook Reservoir Dam., About 3 3/4 miles (air) southeast of Butte meadows. 1457 Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  JEPS106267  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  JEPS94826  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  CHSC31797  Pogogyne zizyphoroides L. Ahart 1974-4-24 431 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET7072553  Pogogyne zizyphoroides A. G. Vestal 1963-5-7 s.n. Butte About 1.7 miles west of Honcut on Ahart Road. Coordinate datum: NAD 27. UTM Zone 10, 627360mE, 4356415mN. Comment
  HSC32603  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  HSC87297  Pogogyne zizyphoroides Patricia Haberkern 1974-4-21 27 Butte Off Skyway, .2 mi. E of intersection with Notre Dame Blvd., E of Chico 61 Comment
  CHSC23447  Polanisia dodecandra subsp. trachysperma K. R. Stern 1974-7-23 Butte Neal Road, 0.1 mi e of junction with Hwy 99 e, ca 6 mi se of Chico. Comment
  SEINET3450754  Polygonum amphibium var. emersum Unknown 2003-6-16 10287 Butte Richvale, Richvale, about 1.5 air miles southwest, dry ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road 20 Comment
  JEPS115577  Polygonum arenastrum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS122293  Polygonum aviculare subsp. aviculare Lowell Ahart 2014-8-24 19728 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CHSC104807  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico. 120 Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  CAS-BOT-BC109150  Polygonum bolanderi Lowell Ahart 1980-7-20 2480 Butte At Little Bald Rock. 1100 Comment
  UC1136112  Polygonum bolanderi P. L. Johannsen 1936-7-29 971 Butte 1 1/2 mi n junction Butte and Secret Creeks (Plot 12); Paynes Creek Quadrangle Comment
  CAS-BOT-BC414365  Polygonum californicum Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CHSC38615  Polygonum californicum Vernon Oswald 1982-11-6 9 Butte Bidwell Park, Chico. 100 ft n of Upper Park Rd. 3.3 mi e of its junction with Wildwood Ave. Growing in gravel of abandoned roadbed in foothill woodland. 158 Comment
  CAS-BOT-BC414366  Polygonum californicum Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 miles se of Paradise. About 1/4 mi. n of Kunkle Res. & e of Kunkle Cr. 500 Comment
  UC392223  Polygonum davisiae E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  UC1594717  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte e intersection about 1/2 mile north of Flea Valley (about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  UC1586531  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6716 Butte about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch 45 Comment
  UC1609156  Polygonum parryi Vernon H. Oswald and Lowell Ahart 1993-6-22 5560 Butte gravel pit w Stirling City (where Hendricks Canal tunnel dumps into creek); Long Ravine 975 Comment
  CHSC113431  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2014-7-7 19582 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  UC203871  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC71860  Polypodium californicum Sam M. Grossberg 1978-4-21 14 Butte ca. 0.6 mi. WNW of Highway 32, 9.2 mi NE of Chico 350 Comment
  CHSC24893  Polypodium calirhiza T. F. Burnham 1976-4-19 19 Butte Ca. 20 ft s of Butte Creek and 0.4 ft w of Covered Bridge, 6.4 mi e of Chico. 115 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  UCD137019  Polypodium calirhiza M. S. Taylor 1980-3-19 2394 Butte Macabes Creek Canyon, ca. 100 ft. E of Lumpkin Rd., ca. 2.5 mi. N of its jct with Forbestown Rd., ca. 18 mi. NE of Oroville. 396 Comment
  SEINET10530418  Polypodium glycyrrhiza Mary Susan Taylor 1976-3-6 Taylor 1014 A Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC31445  Polypogon interruptus L. Ahart 1980-9-10 2638 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC84163  Polypogon interruptus Lowell Ahart 2003-6-30 10322 Butte Along the small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC32626  Polystichum imbricans M. S. Taylor; L. Hanson 1981-4-2 3470 Butte S side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC44607  Polystichum imbricans Vernon Oswald 1982-11-14 15 Butte Near Doon Campground, ca. 1 mi e of Lovelock (Skyway between Paradise and Stirling City). 853 Comment
  SEINET10530116  Polystichum imbricans Mary Susan Taylor 1979-5-4 Taylor 1987 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC116273  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20577 Butte On the west side of Slate Creek Resevoir, about 100 yards northwest of the intake building, about 2 1/4 miles (air) northeast of La Porte Road, about 6 miles (air) southwest of La Porte. 1128 Comment
  JEPS99056  Polystichum imbricans subsp. imbricans Lowell Ahart 2002-6-21 9735 Butte 2 miles (air) NE of Bald Rock Dome; Watson Ridge; On a mountainside, Watson Ridge, about 2 miles (air) NE of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1086 Comment
  CHSC39818  Polystichum munitum Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  CHSC31767  Populus fremontii L. Ahart 1978-3-21 1617 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS115024  Portulaca oleracea Lowell Ahart 2007-11-3 14556 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
  JEPS117907  Potamogeton berchtoldii R. A. Schlising & A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake 1889 Comment
  JEPS95861  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC453688  Potamogeton gramineus Vernon Oswald; Lowell Ahart 1987-7-1 3076 Butte 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. 1935 Comment
  UCD122082  Proboscidea lutea A. A. Heller 1914-8-29 11685 Butte Hills 8 miles north of Oroville. Comment
  SEINET10498364  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1978-7-21 Taylor 1819 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC115782  Prunus cerasifera Lowell Ahart 2015-8-21 20522 Butte On the southeast corner of the intersection of Cox Lane and Lone Tree Road, about 10 miles south of Oroville. 32 Comment
  CHSC99586  Prunus subcordata L. P. Janeway 2008-6-15 9407 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  SEINET10475242  Pseudobahia heermannii Mary Susan Taylor 1980-4-1 Taylor 2423 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 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
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  RSA0118932  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 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
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  UC852192  Pseudostellaria jamesiana A. A. Heller 1915-6-27 12039 Butte Jonesville; Sierra Nevada, Jonesville 1676 Comment
  CDA607  Pseudotsuga menziesii T. C. Fuller 1961-11-29 7302 Butte Hwy 40 Alt., Jarbo Gap, Feather River Canyon. Comment
  SEINET10530926  Pseudotsuga menziesii Mary Susan Taylor 1980-5-27 Taylor 2656 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CHSC39544  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1983-6-6 4030 Butte On the bottom of a vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC70975  Psilocarphus tenellus var. tenellus Vernon Oswald 1998-5-6 8989 Butte Upper Bidwell Park (new addition), South Rim Trail ca. 0.25 mi west of Pine Trail. 396 Comment
  RSA4451  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  UC474263  Pterospora andromedea H. F. Copeland 1928-8-17 488 Butte Jonesville Comment
  CHSC31774  Pterostegia drymarioides L. Ahart 1974-3-18 322 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44111  Purshia tridentata L. P. Janeway; R. A. Schlising 1988-7-22 3041 Butte Saddle between Coon Hollow and Chips Cr, Slope on Chips Cr side. 1905 Comment
  UC105955  Pyrola asarifolia Mrs. R. M. Austin Jul 1896 586 Butte Colby Comment
  SD3515  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  UC478488  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 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-BC94690  Quercus X howellii John Thomas Howell 1955-6-15 30491 Butte 6 miles from Paradise on road to Pentz 426 Comment
  JEPS46211  Quercus X morehus W. I. Follett 1934-7-8 Butte Bidwell Bar Comment
  UC176364  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte 2 mi n Oroville Comment
  UC1135635  Quercus garryana var. breweri C. G. Albertus 1933-7-14 43 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  UC463022  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  SEINET13953539 Image available Quercus lobata A. A. Heller 1915-1 11791 Butte Low flat land in the Sacramento valley near Durham. A tree found only in rich deep soil in valleys, and in this region never found above 225 feet elevation. 68 Comment
  CHSC48385  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  SEINET10477841  Quercus wislizeni Mary Susan Taylor 1979-3-20 Taylor 1937 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
  CDA38780  Rafinesquia californica L. Ahart 2012-4-3 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET12094427  Ranunculus alismifolius Unknown 1983-1 353 Butte E. of Philbrook Reservoir at county line, T25N, R5E, sec. 16, Jonesville 15' quad 1975 Comment
  HSC73007  Ranunculus aquatilis var. diffusus M. S. Taylor, L. Ahart 1981-8-15 4183 Butte In and along W Branch of Feather River, 3.4 mi. SW of Snag lake, 11 mi. NE of Stirling City 1616 Comment
  CHSC1472  Ranunculus arvensis M. Anthony 1953-4-16 Butte Dr. Benedict's ranch. 60 Comment
  SEINET12094429  Ranunculus bonariensis Unknown 1983-1 261 Butte SW of Bangor, T18N, R4E, sec. 36 73 Comment
  CHSC45399  Ranunculus bonariensis var. trisepalus Lowell Ahart 1974-4-7 357 Butte In a pond, Peter Ahart Ranch, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC1475  Ranunculus californicus Agnus Riker 1897-5-1 Butte Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  UC827668  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type was collected in this region by Hartweg) Comment
  UCD80704  Ranunculus canus var. canus CNPS SN Foothill Team 2005-3-30 SNFN 0070 d Butte CDFG, North Table Mountain Wildlife Area, in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Road. 306 Comment
  SEINET10535980  Ranunculus occidentalis var. eisenii Mary Susan Taylor 1978-7-21 Taylor 1829 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC11353  Ranunculus occidentalis var. occidentalis Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41519  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-6 341 Butte E of Butte Meadows, near creek. 1341 Comment
  CHSC52823  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-7-28 308 Butte N part of county at Chico Meadows; in meadow. 1295 Comment
  UC1594623  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  UCD115181  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 miles north of Oroville. Comment
  SFV10355  Rhamnus californica M. L. Vincent 1963-6-6 375 Butte Sierra Nevada Pentz Road, 5 miles south of Paradise. 330 Comment
  UC1121919  Rhamnus rubra C. G. Albertus 1933-7-1 37 Butte sw slope Promontory Point; Chico Quad. 1005 Comment
  UC600524  Rhamnus rubra H. F. Copeland 1931-6-10 Butte crest between Willow Creek and Colby Creek Comment
  JEPS115608  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 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
  CAS-BOT-BC199747  Rhododendron occidentale var. californicum Clarence R. Quick 1952-6-29 52 -91 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CAS-BOT-BC168127  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC61204  Rhus aromatica Lowell Ahart 1993-4-8 6929 Butte on east side of the gravel road, Oroville Wildlife Area, east of the Feather River, about 2 1/2 miles south of the Oroville Airport. 30 Comment
  SEINET10973029  Rhus trilobata var. malacophylla Lowell Ahart 1983-4-10 Ahart 3927 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  JEPS87159  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte about 3 (air) mi ne Concow Reservoir (w side of meadow); Concow Meadow 1097 Comment
  POM219022  Ribes cereum Copeland 1931-6-11 645 Butte Kirby s Meadow, Jonesville. 1800 Comment
  CAS-BOT-BC169094  Ribes inerme var. inerme A. A. Heller 1915-6-11 12044 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC212668  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  CHSC48902  Ribes nevadense Vernon Oswald 1984-4-9 1120 Butte Bryant Ravine Rd., 0.8 mi n of its jct. with Lumpkin Rd. near Feather Falls. 853 Comment
  CHSC115457  Ribes roezlii M. Sutton; C. Yasuda 2013-3-10 11 Butte Feather Falls Trail. 1069 Comment
  CHSC11904  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  UC857965  Ribes roezlii A. A. Heller 1915-6-26 11031 Butte Summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  CAS-BOT-BC198952  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CHSC87414  Ribes roezlii var. roezlii R. D. Fischer 2004-2-28 121 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). West side, at end of access road. 544 Comment
  JEPS119551  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17754 Butte On the north side of Ten Mile House Road, about 100 yards northeast of Guardian Trail about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  POM53911  Rigiopappus leptocladus A. A. Heller, H. E. Brown 1902-5-12 5540 Butte Grade between Clear Creek and Paradise. Comment
  CHSC90654  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. 54 Comment
  JEPS32559  Rorippa Duncan Dunning 1921-7-30 Butte Butte Meadows Comment
  JEPS120612  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-13 19231 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  JEPS108949  Rorippa curvisiliqua var. orientalis Lowell Ahart 2006-9-11 13279 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC82213  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  CHSC108312  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico. 197 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  CDA3959  Rosa eglanteria L. Ahart 2002-6-2 9677 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CHSC30893  Rosa gymnocarpa M. S. Taylor 1980-9-12 3333 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the hwy on dirt rd. 975 Comment
  SEINET10483516  Rosa gymnocarpa Mary Susan Taylor 1980-9-12 Taylor 3333 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC102517  Rosa pisocarpa Lowell Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS115698  Rosa pisocarpa Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds 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
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CHSC82410  Rosa rubiginosa Lowell Ahart 2002-5-15 9660 Butte About 100 yards southwest of Parking Lot 10, about 100 yards northeast of the buildings, on the south side of the dirt road, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET10597110  Rostraria cristata A. Arthur Heller 1902-5-13 Heller 5534 Butte Grade between Clear Creek and Paradise. Comment
  UC1191554  Rotala indica Herbert L. Mason 1946-9-27 13137 Butte 2 mi w Biggs; Butte Sink Comment
  JEPS122261  Rotala ramosior Lowell Ahart 2014-9-23 19866 Butte 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. Comment
  CDA37501  Rotala ramosior P. B. Kennedy Aug 1915 76 Butte Biggs. 0 Comment
  CHSC52469  Rubus armeniacus L. P. Janeway 1987-5-20 2073 Butte Along hwy 70 1.7 mi NE of Pulga bridge; at Poe Dam, N Fk Feather R. 472 Comment
  CAS-BOT-BC147105  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CAS-BOT-BC147106  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC35220  Rubus glaucifolius M. S. Taylor 1981-5-5 3610 Butte W side of spur rd, ca. 1.5 air mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 air mi n of Feather Falls. 792 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC52475  Rubus parviflorus L. P. Janeway 1987-5-20 2078 Butte Along Heinz Cr along hwy 70 2.1 mi NE of Pulga bridge. 457 Comment
  CHSC65431  Rubus pensilvanicus Vernon Oswald 1987-4-16 2330 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  CAS-BOT-BC156610  Rubus ulmifolius John Thomas Howell 1975-6-15 51078 Butte Butte Creek near Chico 60 Comment
  CHSC48875  Rubus ursinus Vernon Oswald 1987-4-6 2307 Butte Butte Creek Reservoir on the n side of Butte Creek e of the Skyway. 80 Comment
  RSA795262  Rubus ursinus L. Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 0.75 air miles west of Highway 32, about 9 air miles northeast of Chico. 198 Comment
  CHSC43632  Rudbeckia occidentalis var. occidentalis Vernon Oswald 1987-7-16 3127 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  JEPS121924  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC46268  Rumex dentatus subsp. klotzschianus Vernon Oswald 1989-5-1 3754 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 1.5 s of Biggs-Afton Hwy. Scattered plants on the floor of a fallow rice paddy that is reverting to marsh. 18 Comment
  CHSC39084  Rumex obtusifolius subsp. agrestis R. A. Schlising 1981-7-11 4135 Butte Central part of county, 1.0 mi s of Coyote Gap. 1143 Comment
  CHSC98975  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC42736  Sagina saginoides Lowell Ahart 1987-5-6 5516 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC445662  Sagittaria cuneata E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  SEINET260325  Sagittaria greggii C. Wick 1988-6-17 sn Butte S of Grainland Rd W of Agua Fria Rd (Goodspeed Watt) Rd S of Dayton 40 Comment
  CHSC30984  Sagittaria montevidensis subsp. calycina M. S. Taylor 1978-7-22 1852 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in ricefield. 30 Comment
  SD928  Salix eastwoodiae E. B. Copeland 1931-6-11 Butte Jonesville; Kirby's Meadow 1750 Comment
  UC437339  Salix exigua var. hindsiana W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek) Comment
  CAS-BOT-BC107965  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  CAS-BOT-BC107966  Salix geyeriana H. F. Copeland 1920-5-21 s.n. Butte Jonesville 1219 Comment
  LA208653  Salix gooddingii A. A. Heller; 1914-4-6 11262 Butte Chico-Oroville rd 12 mi from Chico on the banks of Dry Creek Comment
  UC1192302  Salix gooddingii Herbert L. Mason and Verne Grant 1946-8-8 12996 Butte Sanford Slough on Tule Gun Club; Butte Sink Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  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
  CHSC7061  Salix lasiolepis Lynn R Thomas 1969-5-8 112 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  UC478534  Salix scouleriana E. B. Copeland 1931-7-30 399 Butte Jonesville 1550 Comment
  CAS-BOT-BC238622  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte 8 miles north of Oroville Comment
  JEPS98470  Sanguisorba annua Lowell Ahart 2000-6-29 8544 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CAS-BOT-BC223244  Sanicula bipinnatifida Mrs. C. C. Bruce 1898-5-1 2051 Butte Big Chico Comment
  UC566793  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3720 Butte ne of Oroville (n side of Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  UCD127926  Sanicula bipinnatifida L. Ahart 1978-4-13 1633 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28642  Sanicula crassicaulis M. S. Taylor 1979-3-31 1971 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC42671  Sanicula tuberosa Vernon Oswald 1985-1-24 1680 Butte Upper Bidwell Park, Chico, on the north rim just e of the head of the west intermittent stream flowing into Sycamore Creek. 304 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
  JEPS117134  Sanicula tuberosa Lowell Ahart 2010-5-7 16621 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  JEPS115365  Saponaria officinalis Lowell Ahart 2009-7-9 16018 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 203 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  CHSC5985  Sarcococca ruscifolia M. MacArthur 1968-6-12 148 Butte NW side of Ls Bld. near the SW end, Chico State College campus. 60 Comment
  CAS-BOT-BC436857  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  RSA715723  Saxifraga integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC37383  Schoenoplectus acutus var. occidentalis R. A. Schlising 1980-8-3 3964 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC47145  Schoenoplectus acutus var. occidentalis Henricus Jansen 1989-6-15 Butte Wild Goose. Sutter Butte Sink. Comment
  CHSC58284  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC28549  Scirpus diffusus M. S. Taylor 1979-7-18 1722 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, sw of Jonesville. 1524 Comment
  NY380581  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
  CAS-BOT-BC110891  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte About 2 1/2 miles north-east of Forbestown, near road to Forbestown Res. 868 Comment
  SEINET11750462  Scirpus microcarpus Unknown 1985-1 5076 Butte E of dirt Rd to Forbestown Res. 2.5 mi NE of Forbestown 869 Comment
  CHSC30031  Scribneria bolanderi L. Ahart 1980-5-4 2212 Butte About 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC6076  Scribneria bolanderi B. Wilson 1968-4-19 177 Butte 2 mi s of Cherokee on Table Mountain. Comment
  CHSC6733  Scribneria bolanderi V. Hagaman 1968-4-19 485 Butte Table Mt. Comment
  CHSC78227  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  JEPS104097  Scribneria bolanderi Lowell Ahart 2003-4-10 10084 Butte Along a small drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  CAS-BOT-BC214186  Scutellaria Clare B. Hardham 1975-6-7 20426 Butte South end of Oroville Dam Comment
  UC1713627  Scutellaria californica Lewis S. Rose 1940-5-30 40426 Butte 25 mi ne of Oroville (Feather River Canyon); Feather River Canyon 609 Comment
  CHSC11050  Scutellaria siphocampyloides Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 Comment
  CHSC14122  Scutellaria siphocampyloides L. V. Ritter 1969-5-5 309 Butte Ca. 2 mi w of Cohassett, ca. 10 yds s of Cohassett Hwy, ca. 13 mi ne of Chico. Comment
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  JEPS102485  Secale cereale Lowell Ahart 2001-5-10 8741 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  SEINET10593744  Secale cereale K. Henegar 1969-5-15 Henegar 65 Butte On n bank of Sandy Gulch, 1/4 m above Longfellow Bridge.Habitat: Dry, rocky, soil. Comment
  CHSC10715  Sedella pumila Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CAS-BOT-BC415024  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  HSC92528  Sedella pumila Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 30 Butte On N Table Mtn., S of Paradise on Cherokee Rd., S end of Table Mtn. proper 381 Comment
  CHSC24945  Sedum spathulifolium M. L. McCrum 1976-4-27 20 Butte Pop. ca. 6.5 mi e of Chico, .1 mi w of Covered Bridge, along creek. 112 Comment
  CHSC28876  Selaginella hansenii M. S. Taylor 1980-3-1 2346 Butte Overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  UCD135758  Senecio sylvaticus Robert E. Preston 1988-5-4 590 Butte 6 miles north of Oroville, on Table Mountain. 396 Comment
  CHSC105813  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, 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
  CHSC44901  Senecio vulgaris Lowell Ahart; Vern Oswald 1988-7-10 6124 Butte In the yard of Glenn and Ruth Cunningham, 660 Paseo Campaneros, Chico. 60 Comment
  SEINET10904979  Senecio vulgaris Mary Susan Taylor 1973-1 Taylor 41 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC5982  Sequoia sempervirens M. MacArthur 1968-6-12 153 Butte Chico State College campus. SW side of Life Science bld. 60 Comment
  CAS-BOT-BC364729  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  JEPS95027  Sericocarpus oregonensis subsp. californicus Lowell Ahart 1997-9-6 7890 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel power line, along sides of logging road, about 1/4 mi w of Rim Road) 731 Comment
  CDA4260  Sesbania punicea L. Ahart 2000-8-23 8660 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC263235  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  RSA724851  Setaria parviflora L. Ahart 2006-9-28 13383 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  SEINET10609515  Setaria pumila Lowell Ahart 1995-8-19 Ahart 7615 Butte T17N, R4E, south-east 1/4 Section 11. Normal size plants, on dry sandy soil, east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. Foothill Woodland. 37 Comment
  CHSC63271  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  JEPS87673  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  RSA754578  Sherardia arvensis L. Ahart 2009-4-17 15547 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CDA6643  Sherardia arvensis W. V. Johnson 1970-5-6 Butte 1680 Fresno Avenue, Oroville. 0 Comment
  HSC32630  Sherardia arvensis Gary S. Lester 1974-4-20 108 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC116992  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 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
  CHSC34963  Sidalcea calycosa Eric D. Osman; R. Schlising 1978-4-22 16 Butte Ca 1.5 mi E of Chico, 0.2 mi S of Highway 32 and 100 feet N of Humboldt Rd. 80 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
  CHSC90227  Sidalcea calycosa Michael J. McNairn 1989-4-17 5 Butte Ca. 100 yds. ne of jct. Lupin Ave. and Ceres Ave. ne Chico. 76 Comment
  JEPS115571  Sidalcea calycosa subsp. calycosa Lowell Ahart 2009-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest 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
  CHSC43354  Sidalcea diploscypha Lowell Ahart 1978-5-30 1745 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC1586587  Sidalcea diploscypha Vernon H. Oswald and Lowell Ahart 1991-5-31 4635 Butte on the sw side Glen Pond (Dan Beebe Trail in the Lake Oroville State Recreation Area, on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation ARea, sw side Glen Pond Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  UC1755046  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC13728  Sidalcea hartwegii J. G. Moore 1969-5-7 146 Butte Cohasset Hwy., e side of road directly across the hwy. from entrance to Chico Municipal Airport. Comment
  CHSC44086  Sidalcea hartwegii John E. Hunter 1986-3-28 36 Butte 9.6 mi. e of Hwy. 99 and .1 mi. n Hwy. 32. Comment
  JEPS107764  Sidalcea hartwegii Lowell Ahart 2005-5-11 11808 Butte Along Hendricks Ditch, near a small stream, open pasture field, about 1 1/4 miles south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 276 Comment
  UC220532  Sidalcea hartwegii H. E. Brown Apr 15 1897-Apr 30 1897 193 1/2 Butte near Clear Creek; near Clear Creek 53 Comment
  UC725445  Sidalcea hartwegii A. A. Heller 1940-5-5 15573 Butte above the 10 Mile House site (between Big and Little Chico Creeks); between Big and Little Chico Creeks Comment
  UC725939  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte near the covered bridge on Butte Creek e Chico; near the covered bridge on Butte Creek e of Chico Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico Comment
  CHSC101171  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  RSA755645  Sidalcea robusta L. Ahart 2009-5-15 15681 Butte About 10 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 235 Comment
  CHSC50663  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  RSA755037  Silene californica L. Ahart 2009-4-26 15624 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC35043  Silene gallica C. W. Dawson 1978-4-21 19 Butte 1.5 mi s of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy. at top of ridge. 335 Comment
  CAS-BOT-BC389013  Silene laciniata subsp. californica Lowell Ahart 1983-7-29 4253 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  CHSC21275  Silene laciniata subsp. californica M. S. Taylor 1975-4-30 377 Butte Along both sides of Humbug Rd, ca. 19 mi e of Chico. 365 Comment
  SEINET11931357  Silene lemmonii Unknown 1977-1 14 Butte 3 km SW of Butte-Plumas co. line, 22 km NW of Paradise 490 Comment
  JEPS102307  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC10688  Sisymbrium officinale Lowell Ahart 1962-4-26 Butte Ahart Ranch, Honcut. 45 Comment
  CHSC29735  Sisymbrium officinale J. D. Jokerst 1980-4-17 593 Butte Top of North Table Mt. 472 Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  POM253045  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte Upper end of Snag Lake, 7 miles east of Chaparral. 1524 Comment
  CHSC43042  Sisyrinchium elmeri L. P. Janeway 1987-7-5 2438 Butte 1.0 mi SW of Jones Ndw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  JEPS88523  Smilacina racemosa Lowell Ahart 1996-6-5 7683 Butte about 1/10 mi n of the bridge across the South Fork of the Feather River (about 1 mi n of Golden Trout Crossing, about 7 air mi e of Feather Falls, on the east side of river) 914 Comment
  UC600466  Smilacina racemosa E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC101139  Smilax californica Lowell Ahart 2009-5-15 15716 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
  CHSC116307  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte On the bottom of Grizzly Creek, flowrs into Dark Canyone about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, aobut 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CHSC94570  Solanum americanum Lowell Ahart 2006-9-11 13296 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
  JEPS119632  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  JEPS120606  Solanum americanum Lowell Ahart 2013-11-13 19248 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS124146  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte 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. Comment
  UCR88751  Solanum americanum J. T. Howell 1959-9-26 35083 Butte Arch Rock, N Fork Feather River 457 Comment
  CHSC38726  Solanum parishii Vernon Oswald 1983-4-18 339 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  SEINET10546685  Solanum parishii Mary Susan Taylor 1975-4-25 Taylor 492 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC28427  Solidago velutina subsp. californica M. S. Taylor 1979-10-5 2234 Butte On se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC30040  Soliva sessilis L. Ahart 1980-5-17 2280 Butte Along the edges of a wash, ca. 1/8 mi s of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS115320  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS122118  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CHSC30281  Sorghum halepense M. S. Taylor 1979-10-28 2203 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  UCR219103  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15601 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  SEINET8233923  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC29108  Spartium junceum M. S. Taylor; J. D. Jokerst 1980-4-27 2565 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CDA7727  Spergula arvensis subsp. arvensis L. Ahart 2006-4-23 12533 Butte On the west side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC102718  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC112243  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC94064  Spergularia bocconi R. D. Fischer 2005-6-12 741 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at the east end Humboldt trailhead in Bidwell Park. Collection made off thin Tuscan mudflow in open area near trailhead. 407 Comment
  CHSC37436  Spergularia marina M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4348 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1.8 mi w of its jct with Pennington Rd at the checking station, ca. 12 mi sw of Gridley. 21 Comment
  CHSC35001  Spergularia rubra R. A. Schlising 1981-6-11 4073 Butte N part of county, above Butte Meadows and SW of Cherry Hill Campground. Along Butte Creek. Comment
  SEINET10537505  Spergularia rubra Mary Susan Taylor 1980-10-6 Taylor 3360 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
  CHSC42678  Sphenosciadium capitellatum Vernon Oswald 1983-8-4 955 Butte Near Humboldt Rd. 3.5 mi NE of Butte Meadows. 1414 Comment
  CHSC109084  Spiraea Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 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
  CHSC8559  Spiraea M. MacArthur 1968-6-16 368 Butte E yard of Building T, Chico State College campus. 60 Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC43645  Stachys pycnantha B. Castro 1987-8-29 211 Butte Several feet from s edge of Butte Ck, ca 1/2 mi e of Hwy 99 crossing ca 2.1 mi s of Skyway in Chico. 68 Comment
  JEPS108973  Stachys pycnantha Lowell Ahart 2006-9-11 13286 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
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  POM63408  Stachys rigida subsp. quercetorum A. A. Heller, H. E. Brown 1902-5-9 12251 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC181379  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow 1889 Comment
  JEPS121997  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC102515  Stellaria media Lowell Ahart 2009-5-30 15936 Butte South of trail on the east side of Big Chico Creek, about 50 yards west of Ten mile House Road, Upper Bidwell Park, about 3/4mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC111963  Stellaria media Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18112 Butte On the north side of Big Chico Creek, along the horse trail, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC115471  Stellaria media L. P. Janeway 2015-2-18 11633 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC230  Stellaria media S. Carter 1929-4-22 Butte Chico Street. 59 Comment
  CAS-BOT-BC395117  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte S of Lumpkin Ridge Road, 1.5 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  JEPS87499  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  UC478522  Stellaria obtusa E. B. Copeland 1931-7-19 636 Butte Butte Creek Jonesville (Jonesville) 1500 Comment
  CHSC108987  Stellaria pallida Lowell Ahart 2012-4-30 17943 Butte On large rocks, on the north side of Bloody Pin Trail, west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 317 Comment
  JEPS93969  Stellaria pallida Vernon Oswald 1998-4-6 8899 Butte North Table Mt. on the plateau on the s. side of Beaston Hollow (ca. 1.5 mi. w. of Cherokee Rd.); North Table Mt., Beaston Hollow 323 Comment
  CHSC34018  Stephanomeria elata L. Ahart 1981-7-18 2939 Butte On the burrow area ca. 4.5 mi sw of Oroville. Along the dirt rd near the base of the levee. 35 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
  CAS-BOT-BC375585  Stephanomeria lactucina A. A. Heller 1928-6-28 14659 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CAS-BOT-BC375586  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  SEINET8078260  Stipa lemmonii var. lemmonii R. McKee 1918-5-12 s.n. Butte Magalia. Comment
  LA9449  Stipa lettermanii E. B. Copeland; 1929-7-16 342 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC86981  Streptanthus diversifolius A. A. Heller 1938-4-14 15030 Butte Surface of Table Mountain. 304 Comment
  CDA11951  Streptanthus diversifolius G. F. Hrusa, J. Hart 1989-4-15 5921 Butte Sierra Nevada; Central portion of North Table Mountain. Comment
  CAS-BOT-BC86997  Streptanthus diversifolius Richard Johnson 1950-4-16 s.n. Butte Table Mountain, 5 miles north of Chico. Comment
  CHSC62537  Streptanthus longisiliquus B. Castro; L. P. Janeway, J. Jurewicz 1993-7-6 465 Butte Ca 2.5 mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84 ca 1.1 mi N and E of its jcn with major spur road (Rd 22N84A), on upper slopes of a ridge. On SE-facing road cut. 1005 Comment
  HSC96718  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte N Sierra Nevada Foothills, W side of Lunt Rd., 1 km SW of Hwy. 70 495 Comment
  UCD164223  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss 2013-4-19 IC-SS 300 Butte Table Mountain. 1157 Comment
  CHSC57124  Streptanthus tortuosus var. suffrutescens L. P. Janeway 1991-5-1 3923 Butte Dark Canyon Road ca 1 1/4 mi south of Hwy 70. Road-cut bank. 518 Comment
  RSA4159  Symphoricarpos acutus E. B. Copeland 1930-7-7 479 Butte Jonesville. 1700 Comment
  CAS-BOT-BC99041  Symphyotrichum cusickii Alice Eastwood 1912-8-22 1918 Butte Battle Creek Meadows Comment
  JEPS40842  Symphyotrichum spathulatum Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  UCD136673  Symphyotrichum subulatum var. parviflorum L. Ahart 1982-9-9 3767 Butte 100 meters north of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. 35 Comment
  CAS-BOT-BC221939  Taeniatherum caput-medusae Lowell Ahart 1977-6-2 1504 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS116044  Taeniatherum caput-medusae Lowell Ahart 2009-4-17 15551 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC101276  Taraxacum officinale Lowell Ahart 2009-4-3 15522 Butte On the east side and along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10454608  Tauschia hartwegii Mary Susan Taylor 1975-3-3 Taylor 404 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  SEINET10454611  Tauschia hartwegii Mary Susan Taylor 1980-6-14 Taylor 2885 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC12405  Tellima grandiflora Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment