Search Results — 2000 specimen records retrieved (1559 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC600584  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  SEINET10479965  Abutilon theophrasti Mary Susan Taylor 1978-9-8 Taylor 1905 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC104010  Acanthus mollis Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16746 Butte On the west side of Cedar Grove, about 150 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC331607  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CHSC103159  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  UC138075  Acer negundo var. interior Mrs. R. M. Austin May 1896 804 Butte Sacramento River Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  CAS-BOT-BC216466  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CHSC33636  Acmispon americanus var. americanus M. Merryman 1979-9-2 26 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 951 Comment
  CHSC78384  Acmispon americanus var. americanus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC90517  Acmispon brachycarpus J. S. Peterich 1988-3-22 12 Butte Vic. Bear Hole in Bidwell Park ca. 2 mi. e. of golf course. 120 Comment
  CHSC62739  Acmispon grandiflorus var. macranthus L. P. Janeway 1993-5-20 4350 Butte Plumas National Forest. Swayne Hill. South-facing road cutbank overlooking lower French Creek. 746 Comment
  CHSC40895  Acmispon nevadensis Lowell Ahart 1985-11-5 5224 Butte About 50 feet below the high water line of Lake Oroville, about 1/2 mile west of the Ponderosa Dam. near where Sucker Creek flows into the South Fork of the Feather River. 286 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
  CHSC69113  Aconitum columbianum Lowell Ahart 1997-8-1 7768 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SEINET3082407  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-1 363 Butte Jonesville. 1500 Comment
  CHSC52672  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 355 Butte N part of Butte County, n of Philbrook Reservoir, at Coon Hollow. Streamside. 1633 Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  CHSC39125  Aconogonon davisiae R. A. Schlising 1982-7-12 4318 Butte Near Humbug Summit in n part of county. Near Humbug Road. 2011 Comment
  CHSC33947  Aconogonon phytolaccifolium M. S. Taylor; L. Ahart 1981-8-16 4208 Butte N side of 25N04 near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Sitrling City. 1950 Comment
  CHSC53696  Actaea rubra Kirsten Tarp 1983-7-31 321 Butte Philbrook Reservoir, sw of store. 1706 Comment
  CHSC86080  Adiantum capillus-veneris R. D. Fischer; Paul Maslin 2003-12-24 21 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch. Site about 1/2 mile north of gated main entrance of the Big Chico Creek Ecological Reserve (BCCER) near north facing cave at base of cliff. 548 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
  SEINET11715826  Adiantum jordanii D. J. Straub 1977-1 5 Butte ca 50 ft S of Big Chico Creek and 5050 ft E of Hooker Oak pool, 1 mi E of Chico 91 Comment
  SEINET11716466  Adiantum jordanii D. E. Nay 1975-1 26 Butte ca 150 m SSW of Covered Bridge, 6.4 mi ESE of 99E/Skyway Jct., Chico 130 Comment
  UC42033  Adiantum jordanii Miss E. P. Patton Dec. 1879 Butte near Fall River Fall River Comment
  CHSC97342  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. 757 Comment
  JEPS120088  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte On the south side of Beastson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC61626  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte On the top of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CHSC46609  Agoseris glauca var. monticola Vernon H. Oswald 1989-7-27 3898 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CHSC50812  Agoseris glauca var. monticola Vernon Oswald 1990-7-23 4383 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  SEINET7067148  Agoseris heterophylla A. G. Vestal 1947-4-30 s.n. Butte South Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 623844mE, 4378757mN. Comment
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CHSC55462  Agrostis avenacea L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 38 Comment
  JEPS127630  Agrostis capillaris B. Castro with Melinda Carlson 2007-10-25 1681 Butte Confluence of Big Chico Creek and Sacramento River. W of River Road and N of the creek within surrounding disturbed riparian forest. Comment
  CAS-BOT-BC127335  Agrostis exarata M. S. Taylor 1978-7-19 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Rd., ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC28554  Agrostis exarata M. S. Taylor 1978-7-19 1744 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC42907  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC49495  Agrostis exarata Vernon Oswald 1987-5-18 2905 Butte Butte Creek Reserve on the north side of Butte Creek e of Hwy 99. 68 Comment
  CHSC94554  Agrostis exarata Lowell Ahart 2006-9-11 13301 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
  SEINET10507082  Agrostis exarata Mary Susan Taylor 1977-8-17 Taylor 1497 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  SEINET4344593 Image available Agrostis gigantea Unknown 2009-7-9 16006 Butte T23N, R2E, near center, upper half of section 35. On the north side of a stream, on the east side of a dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC6144  Agrostis microphylla E. Parreno 1968-4-19 71 Butte NE of Municipal Golf in Upper Bidwell Park at side of ridge, Chico. Comment
  CAS-BOT-BC138578  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte Summit east of Jonesville. 2133 Comment
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CHSC49499  Agrostis viridis Vernon Oswald 1987-5-18 2914 Butte Butte Creek Reserve on the s side of Butte Creed n of the Skyway. 80 Comment
  CAS-BOT-BC47977  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Forbestown Res. - Ner the dirt road at the Forestown Res., about 5 miles north-east of Forbestown. 450 Comment
  JEPS113499  Alisma plantago-aquatica Lowell Ahart 2007-7-8 14277 Butte On the south 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
  CAS-BOT-BC131911  Allium John Thomas Howell 1955-6-15 30514 Butte West Branch of North Fork of Feather River 182 Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  SEINET8466775 Image available Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy #70, 4.4 miles south of the Oroville Dam Exit (Hwy. #126) Comment
  SEINET12048523  Allium amplectens P. K. Kirk 1981-1 20 Butte E side of Hwy 99 and 30 m S of its jct with Broyles Rd., 17.6 km N of Chico 60 Comment
  SEINET3153878  Allium attenuifolium K. Conger 1907-1 sn Butte Brush Creek Comment
  CAS-BOT-BC465438  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  RSA0105547  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CHSC96343  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 756 Comment
  CHSC9547  Allium peninsulare J. Barber 1968-4-6 22 Butte Ca. 2 mi e of Chico Rod and Gun Club at Horseshoe Lake on Upper Bidwell Park Rd. 60 Comment
  CHSC49704  Allium peninsulare var. peninsulare Vernon Oswald 1985-5-6 1744 Butte Concow Rd. 1.1 me sw of its jct. With Ponderosa Way. 853 Comment
  CAS-BOT-BC475439  Allium serra S. P. Rixford 1918-5-1 s.n. Butte Chico Comment
  CAS-BOT-BC476714  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  SEINET10478441  Alnus rhombifolia Mary Susan Taylor 1978-7-21 Taylor 1823 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
  CHSC46605  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  SEINET10511201  Alopecurus saccatus A. Arthur Heller 1902-5-3 Heller 5445 Butte Near Nelson. Comment
  CHSC107407  Alyssum desertorum Jake Ruygt 2009-5-24 5420 g Butte McArthur-Burney Falls State Park. 895 Comment
  CHSC110393  Amaranthus albus Lowell Ahart 2012-9-28 18455 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell park 62 Comment
  CHSC40899  Amaranthus albus Lowell Ahart 1985-11-7 5228 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  CHSC50985  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UC1562281  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  UC1563277  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  JEPS118040  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  RSA713019  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and about 1 mile east of Honcut, about 12 miles south of Oroville 31 Comment
  SEINET10904994  Ambrosia psilostachya Mary Susan Taylor 1975-10-29 Taylor 977 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC27707  Amelanchier pallida Robert A. Schlising; Marc P. Hayes 1978-6-24 3291 Butte Probably just inside Butte County line on summit of Humboldt Peak. 2133 Comment
  RSA32886  Amelanchier pallida A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the river at the foot of the Grade leading down from stirling City Comment
  CAS-BOT-BC142948  Amelanchier utahensis H. F. Copeland 1920-8-29 159 Butte Jonesville Woods 1219 Comment
  JEPS98972  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  JEPS24908  Amsinckia intermedia A. A. Heller 1914-4-21 11310 Butte Chico Comment
  CHSC87444  Amsinckia lycopsoides R. D. Fischer 2004-3-29 78 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along old Hwy 32 road on bluffs above Humboldt Trail at park property fence line. 441 Comment
  NY158191  Ancistrocarphus filagineus R. M. Austin 03 1883 s.n. Butte Adobe Flats, Little Chico Comment
  SEINET10507169  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  SEINET10511333  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CAS-BOT-BC137801  Andropogon virginicus var. virginicus Lowell Ahart 1987-10-22 5926 Butte About 0.5 mile west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles southwest of Oroville. 38 Comment
  UCR231509  Angelica Anna M. Hurlbutt 2009-8-7 026 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  CHSC66070  Anthemis cotula Vernon H. Oswald 1996-5-23 7636 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  SEINET10473582  Anthemis cotula Mary Susan Taylor 1980-10-6 Taylor 3356 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 Comment
  RSA518695  Antirrhinum leptaleum L. Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 0.25 mile south-west of the Enterprise Bridge across Lake Oroville. 267 Comment
  CHSC116177  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  CHSC37343  Aphyllon purpureum B. Castro 1982-4-14 15 Butte On rock outcrop in streambank at south end of North Table Mtn, off Cherokee rd ca 4 mi n of Oroville. 152 Comment
  CAS-BOT-BC218521  Apiaceae Saichi Kawahara 1968-5-4 392 Butte On the James Ripley property, Graham Road, Paradise 640 Comment
  CHSC1432  Aquilegia formosa var. truncata E. Walker 1932-5-9 Butte Feather River Canyon. 609 Comment
  JEPS124181  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA774127  Arceuthobium abietinum L. Ahart 2010-9-21 17197 Butte On the west side of the County Road about 1/4 mile north of Jones Meadow, about 2.5 miles (air) southeast of Philbrook Reservoir. 1912 Comment
  UC392220  Arceuthobium campylopodum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CHSC4596  Arctostaphylos C. Glascock 1965-2-27 200 Butte Ca. 15 yds. N of corner of Meadowview and Oro-Quincy Hwy., 2 mi E of Oroville. 36 Comment
  RSA629062  Arctostaphylos Jon E. Keeley 1983-6-27 7816 Butte Highway 70 and Magolia Pentz Road. Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 Comment
  SEINET11989223  Arctostaphylos manzanita J. T. Howell 1975-1 51105 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  RSA31631  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15488 Butte Neal Road west of Paradise just below the Spring House. Comment
  UCD52218  Arctostaphylos manzanita subsp. roofii James I. Mallory 1968-12-3 347 Butte Cohasset Ridge; 2 miles north-northwest of Richardson Springs. 518 Comment
  CAS-BOT-BC24296  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte About 2 mi. w. of Forest Ranch. Comment
  UC1303073  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte near Forest Ranch Comment
  UC725911  Arctostaphylos mewukka A. A. Heller 1942-3-22 16408 Butte two mi above Cohassett School House Comment
  CHSC48371  Arctostaphylos mewukka subsp. mewukka Vernon Oswald 1987-3-20 2293 Butte North side of Skyway 2.7 mi W of junction with Neal Rd. just east of overlook. 335 Comment
  CHSC11941  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  SEINET10973498  Arctostaphylos patula Mary Susan Taylor 1980-5-8 Taylor 2602 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
  UCD51934  Arctostaphylos truei Geodys L. Smith 1975-4-9 s.n. Butte Magalia, Butte Co. Comment
  SEINET11989221  Arctostaphylos truei J. T. Howell 1975-1 51100 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CHSC88610  Arctostaphylos viscida subsp. viscida Linnea Hanson 1984-3-29 232 Butte Plumas National Forest. On dirt road north of Hwy. 70, at Jarbo Gap. 975 Comment
  RSA636988  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-6-20 27472 Butte Approximately 1/2 km west of Cohasset. Comment
  CHSC95012  Aristida oligantha Lowell Ahart 2006-10-13 13504 Butte On the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  RSA129286  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 miles S. of Wyandolte. Smartsville. 152 Comment
  SEINET8521978  Aristida oligantha Kelly W. Allred 1991-1 5478 Butte along hwy 70, about 8 air miles north of Oroville, 1 mile northeast of Wheelock Road, annual valley grassland with scattered oaks 160 Comment
  SEINET8521979  Aristida oligantha Kelly W. Allred 1991-1 5479 Butte outskirts of Oroville along hwy 70, dry roadside 108 Comment
  CHSC50353  Aristida ternipes var. hamulosa Vernon Oswald; Mary Bailey 1990-5-19 4222 Butte South rim of Nance Canyon at the double power transmission lines, ca. 0.6 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 146 Comment
  CHSC52364  Aristida ternipes var. hamulosa J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creed (unnamed canyon is first one south of Big Chico Creek, due east of Chico, future site of Canyon Oaks development). 121 Comment
  UC1499976  Aristida ternipes var. hamulosa Lowell Ahart 1983-8-16 4277 Butte along edge of Hwy 32 about 1 mi e Chico 100 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
  SFV8401  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 244 Comment
  CAS-BOT-BC295835  Arnica dealbata A. A. Heller 1913-6-7 10824 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  UC600519  Arnica dealbata H. F. Copeland 1931-6-10 Butte between Willow and Colby Creek; Jonesville Comment
  RSA739647  Arnica longifolia L. P. Janeway, Linus Gog 2008-7-18 9436 Butte Northern High Sierra Nevada. Along Philbrook Creek betw the E end of Philbrook Reservoir and Concow Road 1689 Comment
  CHSC87782  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611255E 4411193N. 487 Comment
  CAS-BOT-BC90287  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 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
  CHSC47972  Asclepias cordifolia Vernon Oswald 1984-5-23 1204 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  RSA755343  Asclepias fascicularis L. Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 miles east of Honcut, about 12 air miles south of Oroville. 32 Comment
  POM180847  Asclepias fascicularis H. F. Copeland 1923-7-9 s.n. Butte Mud Creek Ranch Comment
  SFV2805  Asclepias fascicularis M. L. Vincent 1962-9-12 288 Butte 0.25 miles off Pentz Road at small reservoir. 4 miles south of Paradise. Comment
  SEINET10913624  Asclepias speciosa Lowell Ahart 1988-6-29 Ahart 6112 Butte Along Bean Creek Road, ca 3/4 mi SW of Johnson Ranch, ca 2 1/4 mi S of Little Bald Rock 549 Comment
  CAS-BOT-BC68880  Aspidotis californica M. S. Taylor; T. Devine; M. Merryman 1981-2-11 3381 Butte Big Bend Mt. Quad. ca. 100 ft. E of Lumpin Rd. on N slope above Macabes Creek, ca. 2 mi. N of jct Lumpkin Rd. 457 Comment
  UC398878  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  SEINET10966246  Aspidotis densa Mary Susan Taylor 1978-7-18 Taylor 1686 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  POM55205  Aster radulinus Kate Conger 1907-1 151 Butte Brush Creek. Comment
  CHSC38489  Astragalus gambelianus Vernon Oswald 1983-4-9 310 Butte Upper Bidwell Park, Chico, on the north rim about 200 ft w of the power lines. 249 Comment
  UC1506099  Astragalus gambelianus Robert T. Clausen 1963-3-22 63016 Butte Oroville Sugarloaf Peak, Campbell Hills, Sacramento River drainage (Campbell Hills, se slope Sugarloaf Peak, Sacramento River drainage, Sacramento Valley) 150 Comment
  CHSC46264  Astragalus tener var. ferrisiae Vernon Oswald 1989-5-1 3753 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 0.6 mi s of Biggs-Afton Hwy. 18 Comment
  CHSC30780  Asyneuma prenanthoides M. S. Taylor 1980-9-12 3336 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 a dirt road. 975 Comment
  SEINET10532283  Athyrium filix-femina Mary Susan Taylor 1978-7-19 Taylor 1737 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC68689  Athyrium filix-femina var. californicum Lowell Ahart 1982-9-13 3811 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Vly 1100 Comment
  SEINET10532293  Athyrium filix-femina var. californicum Mary Susan Taylor 1977-7-15 Taylor 1422 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC84343  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-8-26 10546 Butte On the west side of the dirt road, 1/4 mile north of where Pinkard Creek flows into the Lost Creek Reservoir, about 1/2 mile north of the Lost Creek Reservoir Dam, 1 mile (air) northwest of the Sly Creek Reservoir Dam. 996 Comment
  JEPS116033  Athysanus pusillus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 364 Comment
  CHSC37077  Atriplex heterosperma L. Ahart 1982-9-9 3766 Butte On sides of deep ditch, near water line on bare soil, ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC37085  Atriplex triangularis L. Ahart 1982-10-11 3856 Butte On the sides of deep ditches, along shaded adges of roads, in low damp places, w of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  RSA768984  Avena barbata L. Ahart 2010-5-23 16727 Butte Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 0.25 air miles west of Highway 32, about 9 air miles northeast of Chico 413 Comment
  CAS-BOT-BC145883  Avena fatua Lowell Ahart 1981-5-24 2835 Butte Sierra Nevada. Peter Ahart Ranch, ca. 2 miles north and 0.5 miles east of Honcut. 50 Comment
  JEPS124325  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC85440  Baccharis pilularis R. D. Fischer 2003-11-25 11 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  CHSC34781  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte On S side of rd, a little E of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi W of Pennington Rd, ca. 12 mi SW of Gridley. 35 Comment
  CHSC40296  Baccharis pilularis subsp. consanguinea Lowell Ahart 1985-2-17 4838 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  UCD129525  Balsamorhiza deltoidea W. R. Powell 1968-5-17 1515 Butte 3.5 miles east-northeast of Lake Wyandotte and 3 miles north of Rackberby. 466 Comment
  SBBG18210  Balsamorhiza sagittata M. Vincent 1962-4-20 218 Butte Stern Rd, ca. 0.5 mi W of Harrison Rd, Paradise Comment
  SEINET10536480  Berberis dictyota Mary Susan Taylor 1976-4-27 Taylor 1093 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CDA15321  Bergia texana D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC43271  Bidens cernua Lowell Ahart 1987-8-30 5862 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
  CHSC39129  Bistorta bistortoides R. A. Schlising; R. Banchero 1980-6-6 3652 Butte N of Lake Oroville, Bald Rock Road, 1.5 miles s of jct with Oroville-Quincy Highway at Brush Creek. 929 Comment
  JEPS122214  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SEINET10453127  Boisduvalia densiflora Mary Susan Taylor 1978-7-18 Taylor 1687 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 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-BC75488  Bolboschoenus glaucus J. D. Jokerst; L. Ahart; M. S. Taylor 1982-4-29 1544 b Butte Grey Lodge Waterfoul Management area, dirt road north of Rutherford Road. Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  UC1751225  Botrychium montanum Timothy B. Devine 1985-7-7 880 .1 Butte 1 mi NE of Jonesville (Jones Creek at jct with Humboldt Road) 1615 Comment
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Oct 11 2007
  UC1751233  Botrychium montanum Timothy B. Devine 1985-7-14 847 c Butte 1/2 mi NW of Jonesville (beside Willow Creek about 50 ft S of jct with road to Colby Mt. Lookout) 1511 Comment
  UC1751229  Botrychium simplex Timothy B. Devine 1985-7-7 846 b Butte beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout Jonesville 1524 Comment
  CHSC40384  Boykinia major Lowell Ahart 1985-7-9 5114 Butte Along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC51917  Boykinia occidentalis L. P. Janeway 1987-6-20 2275 Butte Near Fall River, along rd to Fall River and Cascade 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  UC1609476  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte about 6 (air) mi ne Feather Falls (on a steep bank along Fall River, about 200 yards w of the bridge across Fall River); along Fall River, ne of Feather Falls 1036 Comment
  CAS-BOT-BC145682  Brachypodium distachyon John Thomas Howell 1962-6-16 37622 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC6163  Brachypodium distachyon E. Parreno 1968-4-28 76 Butte NE of Covered Bridge, Chico. 60 Comment
  CHSC78221  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte On the north 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
  CHSC80540  Brassica napus Lowell Ahart 2001-5-10 8739 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC113296  Brassica rapa Lowell Ahart 2014-4-9 19330 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC113308  Brassica rapa Lowell Ahart 2014-4-16 19359 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
  SFV10381  Brassica rapa M. L. Vincent 1964-4-8 507 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  CHSC100874  Brickellia californica L. P. Janeway 2008-10-8 9605 Butte Cascade Range Foothills Upper Bidwell Park, Chico; north side of Big Chico Cree 455 m west of Day Camp. 91 Comment
  CHSC26721  Briza minor M. S. Taylor; M. Hayes 1978-4-14 1555 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
  CHSC32370  Briza minor J. D. Jokerst 1979-5-2 1228 Butte Top of North Table Mt., ca. 200 m S of Cherokee Rd. 396 Comment
  CHSC38791  Briza minor Vernon Oswald 1983-4-18 334 Butte Upper Bidwell Park, Chico, on the north rim ca.1000 ft w of the power lines. 213 Comment
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  JEPS7735  Brodiaea elegans subsp. elegans W. L. Jepson 1934-5-4 16620 Butte 2 1/2 mi ne Cana Comment
  UC203653  Brodiaea elegans subsp. elegans A. A. Heller 1914-5-11 11385 Butte on hills 8 mi n Oroville Comment
  SEINET10905137  Brodiaea hyacinthina Mary Susan Taylor 1973-1 Taylor 11 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 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
  CHSC91667  Brodiaea sierrae Lowell Ahart 2005-7-13 12152 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  UCD78201  Brodiaea sierrae R. E. Preston 2002-6-28 1892 Butte Forbestown. 832 Comment
  UCD139163  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte on the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut about 12 miles southeast of Oroville. 54 Comment
  CHSC38792  Bromus carinatus var. carinatus Vernon Oswald 1983-4-20 350 Butte Upper Bidwell Park, Chico, at the water-gaging station w of Bear Hole. 97 Comment
  CHSC82470  Bromus carinatus var. carinatus Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9736 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET11665618  Bromus commutatus Unknown 1983-1 4143 Butte along Ponderosa Way, ca 0.5 mi S of East Fork of Canyon Creek, ca 13.5 mi NE of Oroville 550 Comment
  CAS-BOT-BC156074  Bromus diandrus Lowell Ahart 1987-5-6 5549 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC2132  Bromus hordeaceus H. Silberman; D. Isaac 1949-5-9 Butte W side of football field, CSC campus. Comment
  CHSC30297  Bromus hordeaceus M. S. Taylor 1980-5-27 2643 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  JEPS115956  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side 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
  CHSC112782  Bromus laevipes Lowell Ahart 2013-5-27 18716 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 731 Comment
  CHSC74912  Bromus laevipes E. Hubert 1996-6-24 Butte Ca 6 air mi NE of Paradise, ca 2 mi NNE of Concow Reservoir and 200 ft W of large bend in Concow Rd, 0.5 mi S of its jcn with Ponderosa Way (Rim Rd). Serpentine outcrop. 883 Comment
  CAS-BOT-BC162359  Bromus madritensis John Thomas Howell 1962-6-15 37490 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC3922  Bromus madritensis subsp. rubens H. E. Lindahl 1967-3-20 18 Butte Ca. 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. 60 Comment
  SEINET3412001 Image available Bromus madritensis subsp. rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CAS-BOT-BC162202  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. In woods by Butte Creek. 1524 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast 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
  UCD59068  Bromus orcuttianus G. F. Hrusa; T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx 3 mi. N of Magalia. 800 Comment
  CDA13897  Bromus sterilis G. F. Hrusa, T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SEINET10515117  Bromus tectorum Lowell Ahart 1966-5-20 Ahart 5279 Butte On dry bare soil, near the edge of the road that goes to the Forbestown Reservoir, about 1 mile SW of the Forbestown Reservoir, about 3 1/2 miles NE of Forbestown. Yellow Pine Forest. 610 Comment
  POM196128  Bromus vulgaris H. F. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  CHSC1359  Calandrinia ciliata var. menziesii E. Dolittle 1929-2-26 Butte Near Chico. 57 Comment
  CHSC77983  Callitriche trochlearis Lowell Ahart 2000-5-10 8335 Butte On the bottom of a small moist (seepy) swale, about 100 yards south of a deep wash, 100 feet east of a dirt road, Peter Ahart ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  RSA769227  Calocedrus decurrens L. Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 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 270 Comment
  SEINET10531065  Calocedrus decurrens Lowell Ahart, Peter Ahart 1985-9-15 Ahart 5168 Butte On dry lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  SEINET11738872  Calocedrus decurrens D. J. Straub 1977-1 17 Butte ca 300 yards SE of Magalia Reservoir & 0.5 mi N of West Branch Feather River 853 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  CHSC7125  Calochortus albus James M. Watson 1969-4-23 10 Butte 1 mi ne of Oroville on Cherokee Road. 304 Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CHSC24840  Calochortus luteus J. T. Moore 1976-4-28 18 Butte 5 m n of Skyway road to Paradise, 8 km e of Hwy 99. 210 Comment
  CHSC76968  Calochortus luteus Ida Ryan 1893-5-1 Butte Humboldt Road. Comment
  UC203655  Calochortus luteus A. A. Heller 1914-5-22 11424 Butte near Richardson Comment
  POM215697  Calochortus luteus D. D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor. Comment
  UC672149  Calochortus monophyllus Mrs. Rurie Lyle 1928-4-20 Butte near Chico Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC67733  Calochortus tolmiei James D. Jokerst 1979-4-6 198 Butte 400 ft S of corners of sections. T. C. Hunt property SE of Pulga Rd. Comment
  CHSC25402  Calycadenia ciliosa M. P. Hayes 1977-9-11 56 Butte Exactly 3.5 mi E of the Hwy 99 overpass on Hwy 32 in Chico, ca 3-10 m S of the road. 137 Comment
  CAS-BOT-BC270007  Calycadenia multiglandulosa Lowell Ahart 1976-9-18 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1971669  Calycadenia multiglandulosa 1977-7-6 2036 Butte 2.1 mi SE of the Quincy-Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35, C. oppositifolia (RLC2037) ca. 200 yds E 427 Comment
  CAS-BOT-BC106093  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CHSC86848  Calycadenia oppositifolia L. P. Janeway; Christine Hantelman 2003-7-10 7894 Butte Northern Sierra Nevada Foothills. Above western edge of Rich Gulch arm of West Branch Feather River arm of Lake Oroville; 895 m east of north end of West Branch Bridge (Hwy 70). 294 Comment
  CHSC87573  Calycadenia oppositifolia R. D. Fischer; Jenny Marr 2004-5-9 143 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between Diversion Dam and Bloody Pin Trail near bluff edge. UTM: 10608190E 4404520N. 192 Comment
  LA203134  Calycadenia oppositifolia D. Keck; 1933-5-31 2411 Butte 4.3 mi. N. of Chico on Richardson Springs road Comment
  RSA32902  Calycadenia oppositifolia A. A. Heller 1929-5-15 s.n. Butte Richardson Springs Road Comment
  UC894256  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte 10 mi e of, Oroville; Sierra foothills Comment
  UCD129783  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  RSA795696  Calycadenia spicata L. Ahart 2012-8-22 18420 Butte Old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 0.25 miles east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CHSC39266  Calycadenia truncata Lowell Ahart 1983-6-30 4182 Butte Along the dirt road, about 1 1/2 miles northeast of Concow Res. 550 Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  CAS-BOT-BC275378  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CAS-BOT-BC275384  Calycadenia truncata var. truncata John Thomas Howell 1959-9-26 35089 Butte At Pulga Bridge, N Fork Feather River 417 Comment
  CAS-BOT-BC90930  Calycanthus occidentalis H. L. Mason 1927-5-10 3718 Butte Coal Creek, north side of Table Mountain near Oroville. Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 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
  SEINET12096302  Calycanthus occidentalis M. S. Taylor, Oswald, V. 1985-1 5509 Butte Along Four Trees Road between Hwy 70 and Coyote Gap, ca 25 air mi NE of Oroville Comment
  SEINET5339106  Calycanthus occidentalis M. J. Williams, W. Roderick 1984-5-25 84- 20 -1 Butte Honey Run road to Paradise, 6.8 miles from Paradise. 122 Comment
  CHSC113514  Calyptridium monospermum Lowell Ahart 2014-7-7 19604 Butte In a large disturbed area in the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC1136676  Calyptridium monospermum J. E. Sowder 1933-7-5 103 Butte 2 mi se of Promentory Point 1066 Comment
  SEINET10863160  Calyptridium monospermum Mary Susan Taylor 1982-6-24 Taylor 4743 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  SEINET263497  Calyptridium umbellatum R. J. Shaw 1993-5-23 5094 Butte East of Chico at mile marker 31 of Hwy 32 1000 Comment
  CAS-BOT-BC223609  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19869 Butte Forest Ranch, 22 km NE of Chico on Rte. 32, at Schott Road junction 800 Comment
  CHSC92549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8373 Butte Northern High Sierra Nevada. Plumas National Forest; on Saw-mill Peak, 350 m east of the Lookout Tower; 2.2 km east of Magalia. 991 Comment
  CHSC37089  Calystegia malacophylla L. Ahart 1982-9-29 3832 Butte At N end of Lost Creek Reservoir Dam, ca. 2 mi NW of Strawberry Valley. 1100 Comment
  CAS-BOT-BC221232  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC66383  Calystegia occidentalis subsp. occidentalis Vernon H. Oswalk; Lowell Ahart 1996-6-17 7811 Butte Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy 36 ca 7 mi w of Susanville.Modoc Plateau. Growing on slop at 6.0 mile post E of Dvils Corral Trailhead. 1420 Comment
  CAS-BOT-BC496960  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  CHSC44515  Camissonia contorta Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA718787  Campanula prenanthoides L. P. Janeway 2006-6-25 8703 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC78240  Campanula scouleri Lowell Ahart 2000-7-7 8554 Butte Campground area, on the south side of Fall River, about 100 yards west of the bridge across Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  UC1609329  Campanula scouleri Lowell Ahart 1993-7-22 7078 Butte in campground on w side bridge across Fall River (about 6 air mi ne of Feather Falls) 1036 Comment
  CHSC38034  Capsella bursa-pastoris R. E. Preston 1982-11-13 365 Butte At edge of almond orchard, s side of Nelson Rd at jct with Adobe Rd, ca. 3 1/4 mi ne of Nelson. 46 Comment
  CAS-BOT-BC37265  Cardamine breweri Lowell Ahart 1977-7-26 s.n. Butte Sutter Buttes Region. One mile north of the Golden Trout Crossing on the South Fork of the Feather River. 650 Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  CHSC498  Cardamine californica P. Delaplane 1965-3-2 66 Butte Found ca. 100 yds. from covered bridge on Honey Run Rd. ca. 8 mi. SE of Chico. 304 Comment
  CHSC19931  Cardamine oligosperma M. S. Taylor 1975-3-3 400 Butte Ca. 1/4 mi n of Richardson Springs camp, in dam area, ca. 8 mi n of Chico. 91 Comment
  CHSC4152  Cardamine oligosperma R. Carter 1966-4-2 322 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  JEPS107336  Cardamine oligosperma Lowell Ahart 2005-4-2 11684 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  SBBG128032  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte parking area, Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville 33 Comment
  SEINET11983098  Cardamine oligosperma Unknown 1978-1 4 Butte ca 125 ft S of Rock Creek 213 Comment
  CHSC82709  Cardamine pachystigma L. P. Janeway; B. Castro 2002-3-27 7456 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about one third way down to North Fork Feather River; 1.0 km south-southeast of mouth of China Gulch. 652 Comment
  CAS-BOT-BC282963  Carduus pycnocephalus Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut, banks of N Honcut Creek 50 Comment
  UC1586601  Carduus pycnocephalus subsp. pycnocephalus Vernon H. Oswald and Lowell Ahart 1991-5-13 4587 Butte between Canyon Drive and Oroville Dam Blvd. East (opposite the spillway) Dan Beebe Trail; Lake Oroville Recreation Area 137 Comment
  CHSC113409  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. 1648 Comment
  CHSC103110  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC53710  Carex angustata L. P. Janeway 1987-6-26 2319 Butte Southwest end of Logue Meadows. 1325 Comment
  POM218977  Carex athrostachya E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1550 Comment
  RSA364594  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 1524 Comment
  CAS-BOT-BC19106  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC11936  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  CDA14178  Carex bolanderi G. F. Hrusa 1997-5-29 13806 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Occasional clumping perennial in moist sites along creek margin. Shaded areas. Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 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
  JEPS105282  Carex bolanderi Dean W. Taylor 1995-8-6 15390 Butte 2 air mi N of Stirling City; Reston Road, ca. 1.5 mi SW Bald Mountain summit 1219 Comment
  JEPS110391  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SBBG119879  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte near rd along W side of lower Pinkard Crk, 1.2 rd mi N of Lost Crk Reservoir dam 1021 Comment
  UC823293  Carex bolanderi Lewis S. Rose 1939-6-7 39235 Butte 3 mi N of Pulga; Feather River Canyon 518 Comment
  CHSC48546  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mi E of a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. 1798 Comment
  CHSC44034  Carex capitata S. C. Morey 1983-7-23 572 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  CHSC115865  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands. 1000 Comment
  UCR246357  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands (n SNH), Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles north of dam on Lost Creek Reservoir 1040 Comment
  HSC104258  Carex cyrtostachya L. Ahart 1998-7-19 8052 Butte About 0.5 mi. NW of the Lost Creek Reservoir, ~0.75 mi. NW of the Lost Creek Dam 1021 Comment
  SD257095  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River and the County Road; Ca. 4.0 air miles northeast of Feather Falls. 1219 Comment
  SD257096  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca. 4.0 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC45079  Carex echinata subsp. echinata Vernon Oswald 1987-5-21 2920 Butte Just w of the Skyway 1.4 mi s of Inskip. 1426 Comment
  CHSC105486  Carex feta B. Castro 2010-6-19 100028 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  CHSC44995  Carex feta S. C. Morey 1983-7-23 579 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  SEINET7559905 Image available Carex globosa John Thomas Howell 1962-6-16 37537 Butte Magalia. 732 Comment
  CHSC86534  Carex gracilior L. P. Janeway; John Hunt 2003-6-13 7829 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 230 m north of the north end of En-terprise Bridge. Dirt roadside at intersection of Springer Road (Road 19N31X) and Feather Falls Road (Lumpkin Ridge Road). 305 Comment
  JEPS87706  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  CDA14061  Carex hirtissima G. F. Hrusa, T. D. Wilfred 1997-5-1 13708 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Low moist area near creek. Clumping. Uncommon here. Comment
  SEINET7561557 Image available Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. 838 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  CHSC35710  Carex integra J. D. Jokerst; R. A. Schlising 1982-5-19 1579 Butte Open disturbed grassy area N of and adjacent to Fall River at the Fall River Campground. 1005 Comment
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  JEPS121934  Carex integra Lowell Ahart 2014-7-10 19617 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC600694  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville 1524 Comment
  CHSC40924  Carex lemmonii Lowell Ahart 1985-6-30 5078 Butte Along a small stream, east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CAS-BOT-BC32200  Carex multicaulis Lowell Ahart 1982-6-4 3537 Butte Ca 8 mi E of Feather Falls, 1.5 mi E of Camp 18. 1000 Comment
  SEINET7568477 Image available Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 2 1/2 miles north-east of Forbestown. 853 Comment
  CAS-BOT-BC119721  Carex nervina V. Oswald; Lowell Ahart 1988-7-26 3623 Butte Snow Mt. region ca. 6 air mi SE of Jonesville. 2026 Comment
  UC1537179  Carex praegracilis Gordon H. True Jr. 1936-3-26 378 Butte Wild Goose Country Club Butte Creek 15 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC116737  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 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
  SEINET3138432  Carex subfusca R. Tallent 1987-8-17 952 Butte Lassen National Forest; along Jones Creek, NE of Jonesville. 1720 Comment
  JEPS106386  Carex utriculata Lowell Ahart 2004-8-2 11326 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CHSC47143  Carex vesicaria Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  CHSC770  Caryopteris incana V. Holt 1952-7-2 Butte In Mrs. Sanborn's garden, Chico. 57 Comment
  JEPS8408  Castilleja W. L. Jepson 1891-4-20 21474 Butte South Peak; Marysville Butte Region Comment
  UC726977  Castilleja affinis subsp. affinis A. A. Heller 1941-4-12 16066 Butte 2 mi above Pentz (Pentz-Paradise Grade) Comment
  UC1094742  Castilleja applegatei subsp. pinetorum Francia Chisaki 1956-6-1 906 Butte 12.3 mi s Butte-Plumas County lines (on Highway 40 Alt); Feather River Canyon 609 Comment
  UCSB61636  Castilleja applegatei subsp. pinetorum Bacigalupi, Rimo; Robbins, G.; Chisaki, Francia 1956-4-19 Butte Under yellow pine at lower (western) limits of Paradise 457 Comment
  CAS-BOT-BC255466  Castilleja applegatei var. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 Comment
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 371 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  JEPS119587  Castilleja attenuata Lowell Ahart 2012-4-17 17875 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
  CHSC39943  Castilleja campestris subsp. campestris Lowell Ahart 1984-4-25 4585 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC61181  Castilleja lacera V. H. Oswald; L. Hanson, L. P. Janeway 1993-5-11 5371 Butte McKnight Ranch on the N side of Hwy. 99 between Neal and Durham-Pentz roads, on the bottom of the first canyon (unnamed) S of the Butte County Sanitary Landfill, near the double set of power transmission lines. 91 Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  CHSC33341  Castilleja rubicundula subsp. rubicundula R. Banchero; R. Schlising 1981-5-3 460 Butte 0.2 mi e of the jct of Meridian Rd and Hwy 99. Comment
  JEPS89031  Castilleja rubicundula subsp. rubicundula A. A. Heller and H. E. Brown 1914-5-8 Butte near Clear Creek (Berry Canyon); Berry Canyon Comment
  POM193336  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  CHSC46480  Caulanthus lasiophyllus Lowell Ahart 1974-4-11 384 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC40504  Caulanthus lasiophyllus Lowell Ahart 1974-4-11 s.n. Butte Sierra Nevada. Honcut. 45 Comment
  CAS-BOT-BC48700  Ceanothus cordulatus Clarence R. Quick 1964-7-9 64 -68 Butte On dead-end road into Wildcat Creek east of Pulga Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CHSC107398  Ceanothus cuneatus Blake McSorley 2010-3-2 Butte Bidwell Park at end of Centennial Ave. In degraded riparian area along Big Chico Creek. 86 Comment
  SEINET10870344  Ceanothus cuneatus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4865 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET13945808 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  RSA755786  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2007-3-27 DOB 815 c Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1 road mile from Centerville Road on Bean Flat Road, 15.1 kilometers 74 degrees true ENE of Chico. 243 Comment
  UC203656  Ceanothus cuneatus var. cuneatus A. A. Heller 1914-3-19 11210 Butte canyon of Big Chico Creek 76 Comment
  UC203678  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte 8 mi from Chico (on the Chico-Centerville rd) Comment
  UC80025  Ceanothus integerrimus R. M. Austin April 1896 127 Butte Chico Creek Comment
  CHSC115316  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte On the east side of the road to the Forbestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 573 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  POM87502  Ceanothus parryi C. C. Bruce 1898-05 1804 Butte Forest Ranch Comment
  CAS-BOT-BC52011  Ceanothus prostratus John Thomas Howell 1978-4-18 52849 Butte De Sabla 853 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  RSA399005  Ceanothus prostratus A. Davidson 1928-7-1 s.n. Butte [Unspecifed; Butte-Plumas counties] Comment
  RSA25676  Ceanothus prostratus var. occidentalis Carl B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada, 7 miles W of De Sabla on road to Forest Ranch. 762 Comment
  CAS-BOT-BC52424  Ceanothus velutinus var. velutinus H. F. Copeland 1920-7-7 37 Butte Jonesville 1219 Comment
  CHSC6002  Cedrus atlantica M. MacArthur 1968-6-19 246 Butte Front of Administration bld., Chico State College. 60 Comment
  CHSC6012  Cedrus deodara M. MacArthur 1968-6-19 252 Butte Lawn in front of CAC and next to NE end of Library bld., Chico State College. 60 Comment
  CHSC108969  Cedrus libani var. libani Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17816 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  RSA0035337  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18022 Butte On the north side of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS117545  Centaurea melitensis Lowell Ahart 2010-6-20 16835 Butte About 3/8 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 55 Comment
  CHSC114165  Centaurea solstitialis Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16791 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC3362  Centaurea solstitialis M. Gregg 1966-5-7 161 Butte Approx. 5 miles north east of the Skyway on Humbug Rd. Comment
  CHSC6085  Centaurea solstitialis B. Wilson 1968-5-17 203 Butte E of Broadway and First Street, Chico. 59 Comment
  CHSC111142  Centaurium tenuiflorum Lowell Ahart 2012-6-21 18212 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CDA38375  Centaurium tenuiflorum L. Ahart 1998-7-1 8025 Butte 100 yards south of an 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. Comment
  CHSC30747  Centromadia fitchii M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  CAS-BOT-BC222899  Cephalanthus occidentalis Lowell Ahart 1981-8-11 3027 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS12459  Cephalanthus occidentalis var. californicus H. A. Dutton 1921-1 Butte Hooker Oak Chico (Chico) Comment
  CHSC64040  Cerastium fontanum subsp. vulgare S. C. Morey 1983-8-4 722 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC101319  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC42959  Cerastium glomeratum Lowell Ahart 1987-7-3 5771 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  JEPS108823  Cerastium glomeratum Lowell Ahart 2006-5-8 12593 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 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
  CHSC101091  Cercocarpus betuloides var. betuloides Lowell Ahart; John Dittes 2009-3-20 15518 Butte On the south side of the Guardian Rock Trail, about 100 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
  SEINET267157  Cercocarpus betuloides var. betuloides T. A. Ranker, PG Trapp 1994-6-17 1624 Butte Pence Road south of Paradise; Cherokee quad. 7.5 min topographic map; along road 395 Comment
  CAS-BOT-BC276479  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 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
  UC478465  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 692 Butte Jonesville 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
  UC187417  Chaenactis glabriuscula var. heterocarpha Mrs. R. M. Austin 1883-1-1 Butte Adobe Flat Chico, Adobe Flat Comment
  CDA35238  Chamaesyce hooveri T. C. Fuller 1962-5-17 8712 Butte Highway 99E to Vina, 12.3 miles northwest of Chico. 0 Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CHSC102992  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC31677  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 1975-7-5 851 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC69440  Cheilanthes gracillima M. S. Taylor 1978-7-21 1840 Butte Big Bald Rock, ca. 2 mi. e. of Lake Madrone. 997 Comment
  CHSC32693  Cheilanthes gracillima M. S. Taylor 1981-3-24 3438 Butte S side of Hwy 70, in curve in rd across the river from Mayaro, ca. 1 mi. e of Pulga. 487 Comment
  SEINET10470378  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4981 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CHSC34768  Chenopodium album L. Ahart 1981-11-6 3223 Butte On good soil on west side of road near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  SEINET10479003  Chenopodium album Mary Susan Taylor 1980-7-6 Taylor 3062 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10479091  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-29 Taylor 968 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  RSA724944  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  SEINET10871663  Chenopodium botrys Lowell Ahart 1984-8-19 Ahart 4781 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CDA3118  Chenopodium multifidum Vernon Oswald 2000-11-2 9981 Butte Chico Sweage Treatment Plant on Chico River Road west of Chico. Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  UC426926  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  UC426925  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  JEPS103563  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the W edge of Lumpkin Road, ca 1/8 mile S of the Enterprise Bridge across Lake Oroville, ca 11 1/2 miles (air) NE of Oroville. 326 Comment
  CAS-BOT-BC252675  Chorizanthe membranacea C. R. Quick 1951-6-5 51 -88 Butte 13 miles from Chico on Deer Creek Road Comment
  SEINET7073000  Chorizanthe polygonoides A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles northwest of Oroville on Route 149 at junction with Dry Creek. Coordinate datum: WGS84/NAD83. (39? deg. 36' 28" North Latitude; -121? deg. 40' 12" West Longitude. UTM Zone 10, 614172mE, 4384858mN. Coordinate datum: NAD27). Comment
  CAS-BOT-BC252837  Chorizanthe polygonoides var. polygonoides Roxana S. Ferris 1952-5-17 12484 Butte Flat above canyon of Butte Creek, about 2 miles west of Paradise on Chico Road 457 Comment
  CAS-BOT-BC36369  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  SEINET10475261  Chrysothamnus nauseosus subsp. albicaulis Mary Susan Taylor 1979-10-13 Taylor 2261 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC94529  Cinna latifolia Lowell Ahart 2006-8-15 13191 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA0070621  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville. 1600 Comment
  CAS-BOT-BC285522  Cirsium occidentale var. candidissimum A. A. Heller; H. E. Brown 1902-5-8 5502 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC20255  Cirsium occidentale var. venustum T. Lorenz 1972-4-23 2 Butte Collected adjacent to highway 32, ca. 7.6 mi from highway 99 overpass. Comment
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UCSB63610  Clarkia affinis Webster, Steven 1986-4-15 Butte ca. 5 mi ne of Chico; Chico Quadrangle, Ne1/4, Ne1/4, Sect. 22, T22N, R2E, MDM 16 Comment
  CHSC14037  Clarkia arcuata G. Blomstrom 1973-4-28 25 Butte Along Humbug rd, ca. 4 mi. from Centerville Cemetery. 670 Comment
  CHSC87552  Clarkia arcuata R. D. Fischer 2004-4-13 65 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near the middle portion of the Humboldt Trail. 426 Comment
  CHSC48625  Clarkia gracilis subsp. albicaulis Vernon Oswald 1984-5-28 1210 Butte Cohasset Rd., 3.0 mi n-e of its jct. with Keefer Rd. Beside the road. 243 Comment
  CHSC8618  Clarkia gracilis subsp. albicaulis L. V. Ritter 1969-5-5 307 Butte Ca 2 mi. w of Cohasset, ca 10 yds. s of Cohasset highway. Comment
  CHSC35148  Clarkia mildrediae subsp. lutescens R. Schlising; K. Tarp, R. Banchero 1981-7-11 4141 Butte NE part of county, E of N Fork of Feather River at Coyote Gap region; at roadside along Four Trees Road. 1447 Comment
  CHSC39033  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Concow Reservoir, E of Paradise and N of Oroville; SE of the Reservoir, along the road. 500 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
  CHSC70738  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4430 Butte Southwestern end of Watson Ridge; about 1.8 mi east-northeast of Bald Rock Dome; about 0.7 mi northwest of Fall River. Road cutbank on south-trending ridge nose. 1097 Comment
  CHSC89908  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-10 Butte Northern Sierra Nevada Foothills. Along roadside leading across Ponderosa Dam. 304 Comment
  HSC38051  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2457 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CAS-BOT-BC163642  Clarkia purpurea subsp. quadrivulnera Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC163653  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC1109  Clarkia purpurea subsp. quadrivulnera E. Hembree 1929-5-15 Butte Cohasset. 457 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  SEINET7073009  Clarkia purpurea subsp. quadrivulnera A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  CHSC48629  Clarkia purpurea subsp. viminea Vernon Oswald 1988-6-14 3377 Butte Jordan Hill Rd. between Coutolenc Rd. and the West Branch of the Feather River. 512 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  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
  CHSC59117  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 472 Comment
  UC1143252  Clarkia rhomboidea H. and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  UC765866  Clarkia rhomboidea Robert F. Hoover 1936-5-21 1162 Butte 7 mi n Chico Comment
  CAS-BOT-BC164793  Clarkia rhomboidea Lowell Ahart 1984-5-28 4651 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  RSA0059925  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  SEINET770612 Image available Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, marshy, sloping stream-fed meadow above south bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  CDA23953  Claytonia parviflora subsp. parviflora L. Ahart, P. Maslin, J. Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. Comment
  CHSC31195  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, in very wet shady areas under tress, in moss over rocks by the creek, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi ne of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC33109  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-5 3619 Butte In shaded creek crossing 21N35 and , ca. 0.5 mi s of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi n of Feather Falls. 853 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
  CHSC33356  Claytonia perfoliata subsp. perfoliata Steve Alvarez 1980-3-3 8 Butte Within Chico city limits, ca. 0.2 km nnw of Horselake, 1.0 km n of Big Chico Creek, on top of the ridge. 150 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  JEPS113206  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  JEPS121920  Claytonia rubra subsp. rubra Lowell Ahart 2014-7-10 19633 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC37618  Clematis lasiantha T. B. Devine 1979-7-8 581 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC52782  Clematis lasiantha Neal Schaeffer 1982-4-18 10 Butte Between Pentz Rd and Kunkle Reservoir, ca. 20 m from road, 50 m n of reservoir access road. 450 Comment
  CHSC65824  Clematis lasiantha Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi south of trailhead in Paradise. 548 Comment
  UCD95626  Clematis lasiantha P. Thompson 1996-4-26 36 Butte Hwy 70. Along steep roadside next to a running creek. Comment
  SEINET12089666  Clematis lasiantha Unknown 1977-1 18 Butte 100 ft S of Cohasset Rd., 10.5 mi WNW of Chico, 13 mi from CSUC Comment
  CHSC103725  Collinsia heterophylla Lowell Ahart 2010-5-7 16627 Butte On both sides of the Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeat of Chico. 238 Comment
  UC1521808  Collinsia sparsiflora var. collina Lowell Ahart 1984-4-3 4537 Butte 1 mi N, 2.7 mi E of Honcut; Peter Ahart Ranch, N Honcut Creek 50 Comment
  UC725775  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15048 Butte between the West Branch and the North Fork of the Feather River summit; on the Feather River Highway Comment
  CHSC44726  Collinsia tinctoria R. Banchero 1980-6-19 253 Butte Along Concow Rd 1.1 mi N of its jct with Hwy 70, 0.1 mi N of the town of Concow. 554 Comment
  CHSC48985  Collinsia torreyi var. wrightii Vernon Oswald 1984-7-2 1338 Butte Humbug Summit. 2320 Comment
  SEINET10496933  Collomia grandiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4747 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC45348  Collomia tinctoria Vernon Oswald 1987-6-23 3019 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. On wall of gravel pit. 1889 Comment
  UC392194  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slide over Butte Creek; Jonesville 1550 Comment
  UC2026856  Comandra umbellata subsp. californica Lowell Ahart 2012-6-28 18246 Butte At the base of Pole AP#3, where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. Foothill Woodland. Comment
  POM82270  Conium maculatum C. C. Bruce 1897-05 2044 Butte Sacramento River Comment
  RSA80351  Conium maculatum F. W. Peirson 1926-6-20 6761 Butte 5 miles west of Chico Comment
  CAS-BOT-BC286065  Conyza canadensis Lowell Ahart 1987-7-17 5836 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10474385  Conyza floribunda Mary Susan Taylor 1974-1 Taylor 318 Butte 61 Comment
  CAS-BOT-BC237926  Cordylanthus Lowell Ahart 1980-7-4 2450 Butte Near Hurleton 600 Comment
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  UC196062  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e Oroville Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC50806  Cordylanthus tenuis subsp. viscidus Vernon Oswald; Lowell Ahart 1990-7-31 4415 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  JEPS66511  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2768 Butte 1.5 mi w Butte Meadows (at Thatcher Ridge road junction) 1280 Comment
  CAS-BOT-BC210518  Cornus sessilis Rimo Bacigalupi 1934-9-2 2325 Butte West fork of Campbell Creek along Chico-Butte Meadows Road, 9 mi. SW. of Butte Meadows 914 Comment
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  POM196109  Corydalis caseana E. B. Copeland 1929-7-3 s.n. Butte Jonesville. 1500 Comment
  CAS-BOT-BC401861  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC58279  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  JEPS106291  Cotula australis Lowell Ahart 2004-3-12 10703 Butte Grave of Tillie Moody, east of the entrance gate, Thompson Flat Cemetery, about 1/8 mile east of Cherokee Road, about 1 mile north of Oroville 61 Comment
  CAS-BOT-BC427624  Crassula aquatica John Thomas Howell 1978-4-17 52835 Butte Table Mountain 381 Comment
  CHSC80522  Crassula aquatica Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET10449716  Crassula muscosa Mary Susan Taylor 1980-3-28 Taylor 2403 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC46739  Crassula saginoides Lowell Ahart 1974-4-11 393 Butte Peter Ahart Ranch, about 2 miles north and 1 1/2 mile north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET516424 Image available Crassula tillaea Lowell Ahart 1974-1 381 Butte Large size plants, growing on dry to damp sandy soil along North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 1/2 mi E of Honcut, about 12 mi S of Oroville. 43 Comment
  OBI16623  Crepis occidentalis H. F. Copeland 1932-7-24 Butte Near Butte Crk meadow. Vicinity of Jonesville, Lassen Natl Forest Comment
  CHSC117425  Crucianella angustifolia Lowell Ahart 2016-5-30 20899 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC29115  Crucianella angustifolia M. S. Taylor; J. D. Jokerst, L. Ahart 1979-4-6 1994 A Butte Abundant in Valley Grassland and along Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 30 Comment
  UCD80865  Crucianella angustifolia Robert E. Preston 2007-6-7 2557 Butte North Table Mountain, along Cherokee Rd, 0.65 mi N of Oregon Gulch Rd. 417 Comment
  CHSC106343  Crypsis schoenoides Lowell Ahart; John Dittes 2010-8-30 17070 Butte About 150 yards west of the fence, south edge of the meadow, Ash Creek State Wildlife Area, 2,300 feet north of Lassen County Line, about 3.6 miles (air) west of Adin, about 8.0 miles (air) northeast of Bieber, Big Valley. 1267 Comment
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Oct 5 2019
  JEPS94434  Crypsis schoenoides Lowell Ahart 1997-10-24 7940 Butte about 20 yards n of the South Fork of the Feather River (and on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderoas Dam); Sucker Creek, strand of Lake Oroville 274 Comment
  UC1100332  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET10518369  Crypsis schoenoides Lowell Ahart 1986-11-9 Ahart 5435 Butte On dry red rocky disturbed soil, below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 270 Comment
  CHSC40752  Cryptantha affinis Lowell Ahart 1985-6-17 5067 Butte Lumpkin Ridge, 30 yards south of the dirt road, 1-/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC96816  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  CAS-BOT-BC249066  Cryptantha flaccida George K. Helmkamp; E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC71165  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SEINET10497604  Cryptantha hendersonii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4180 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CHSC67753  Cryptantha intermedia James D. Jokerst; M. S. Taylor 1980-4-19 611 Butte Humbug Rd. 7.4 mi N of Centerville Cemetery. Comment
  RSA718310  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 355 Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  CHSC39025  Cryptantha milobakeri R. A. Schlising 1983-5-13 4405 Butte Bald Rock Dome area in e-central part of county. 548 Comment
  CHSC43577  Cryptogramma acrostichoides Vernon Oswald; Lowell Ahart 1987-8-5 3179 Butte Near Humboldt Peak. 2151 Comment
  UC600568  Cryptogramma acrostichoides H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET11739356  Cupressus macnabiana M. S. Taylor, Oswald, V. 1984-1 5395 Butte jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise 372 Comment
  CHSC58907  Cuscuta californica Lowell Ahart 1992-7-26 6858 Butte About 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  CHSC54526  Cuscuta californica var. breviflora Vernon H. Oswald; Lowell Ahart 1991-8-19 4838 Butte East end of coon Hollow Rd (Forest Rd 26N74), near its junction with Forest Fd. 25N15 (to Philbrook Reservoir). 1706 Comment
  UCD126246  Cuscuta californica var. californica Lowell Ahart 1998-7-18 8042 Butte along Hurleton Swedes Flat Road, 1.5 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  HSC97157  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of dredger pond, W of N Honcut Creek, about 2.5 mi. N and 2.75 mi. E of Honcut, about 12 mi. SE of Oroville 55 Comment
  SBBG120020  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte S edge of the N Fork of the Feather River, just W of Mill Crk, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 3/4 mi NE of Pulga, ca. 21 mi (air) NE of Oroville 431 Comment
  CHSC48364  Cuscuta howelliana Vernon Oswald 1988-6-7 3356 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Vernal pool along Hwy 99 just n of Dry Creek. 54 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC107566  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 -A Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC90809  Cycloloma atriplicifolium Lowell Ahart 2005-5-2 11780 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
  CHSC113125  Cynodon dactylon Lowell Ahart 2013-11-18 19284 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
  CHSC116115  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte Crack in the paved road, strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  SEINET10507350  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CAS-BOT-BC114743  Cyperus difformis Herbert L. Mason; Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club. Comment
  CHSC100230  Cyperus difformis John Dittes 2003-10-8 850 -A Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  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
  CHSC28661  Cyperus eragrostis J. D. Jokerst; M. S. Taylor 1979-10-13 393 Butte Junction of Griffith Gulch and Jordan Hill Rd. (Ponderosa Way on some maps). 701 Comment
  CHSC31953  Cyperus eragrostis J. D. Jokerst; M. S. Taylor, R. A. Schlising 1980-5-18 721 Butte Somewhat below the top of Cohassett Ridge on slope above (North) of Mud Cr. 243 Comment
  CHSC68379  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-9-14 1860 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  SEINET10466870  Cyperus eragrostis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4102 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC114380  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CDA13826  Cyperus erythrorhizos G. F. Hrusa, T. D. Wilfred 1996-9-5 13554 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC68387  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1871 Butte Northwest side of Little Chico Creek near River Road, about 2 mi south of Chico River Road. 36 Comment
  POM219532  Cyperus esculentus H. F. Copeland 1923-8-13 550 Butte Nelson. Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC78732  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West 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
  JEPS98262  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte 12 air mi SW of Chico (near a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ordbend) 32 Comment
  CDA42934  Cyperus iria L. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  CHSC42935  Cyperus squarrosus Lowell Ahart 1987-7-3 5774 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
  CDA13825  Cyperus strigosus G. F. Hrusa, T. D. Wilfred 1996-9-5 13553 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  SEINET199879  Cyperus strigosus Herbert L. Mason, Verne Grant 1946-9-27 13140 Butte 3 miles W of Biggs. Comment
  UC1563285  Cyperus strigosus unknown 1990-10-3 6614 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); E. Fork Canyon Creek 243 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CHSC27962  Cystopteris fragilis M. S. Taylor 1978-7-18 1705 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte Co and Tehama Co Line. 2158 Comment
  CHSC32694  Cystopteris fragilis M. S. Taylor 1981-3-24 3445 Butte S side of Hwy 70 near Poe Dam, ca. 1/2 mi e of Pulga. 487 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  RSA722302  Cytisus monspessulanus Richard Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte mountain Road. 1000 Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  SEINET10454653  Daucus pusillus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4077 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
  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-BC173263  Delphinium M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville 1828 Comment
  CAS-BOT-BC8574  Delphinium hansenii Isabel McCracken 1938-5-21 s.n. Butte Marysville Buttes, east side Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC1449  Delphinium nudicaule D. Sloan; L. Oliver 1935-2-23 Butte Salmon Hole in Chico Creek. 152 Comment
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May 10 2007
  CHSC24887  Delphinium nudicaule D. J. Funk 1976-4-11 7 Butte Ca. 15 ft. sw of Little Chico Creek. 365 Comment
  CAS-BOT-BC9921  Delphinium nudicaule C. C., Mrs. Bruce 1897-6-1 1915 Butte Butte Creek Comment
  CAS-BOT-BC9923  Delphinium nudicaule A. A. Heller 1922-4-23 13619 Butte At the Feather River crossing near Yankee Hill Comment
  CAS-BOT-BC8069  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  UC854189  Delphinium nuttallianum A. A. Heller 1938-4-14 15036 Butte at head of a ravine Table Mountain Comment
  CHSC38164  Delphinium patens subsp. patens Vernon Oswald 1983-3-13 149 Butte Upper Bidwell Park, Chico, near Yahi Trail about 800 ft e of Parking Area L at Diversion Dam. Near the top of a cliff. 121 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  SEINET3450728  Delphinium patens subsp. patens Unknown 2003-4-15 10100 Butte Oroville, Oroville, about 7 air miles north, about 1.25 miles northwest of the iron gate and fence, southwest of drainage entering Beatson Hollow, steep slopes of Beatson Hollow 280 Comment
  CHSC31845  Delphinium variegatum L. Ahart 1974-3-18 323 Butte In pasture fields; Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC82875  Dendromecon rigida Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham. Comment
  JEPS114178  Dendromecon rigida L. P. Janeway 2007-5-6 8974 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  POM97723  Dendromecon rigida C. C. Bruce 1898-05 2417 Butte Doe mill Comment
  UCSB63849  Deschampsia cespitosa Ahart, Lowell 1997-8-1 Butte Bottom of Little Kimshew Creek, Snow Meadow; 0.25 mi E of Table Mtn, 8 mi by air SE of Stirling Cirty 1524 Comment
  CAS-BOT-BC192650  Deschampsia danthonioides Lowell Ahart 1980-5-4 2170 Butte Thermalito 65 Comment
  CAS-BOT-BC192657  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek Comment
  UCD80540  Deschampsia danthonioides CNPS SN Foothill Team 2005-3-31 SNFN 0073 c Butte CDFG North Table Mountain Wildlife Area, in the North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  SEINET10524190  Deschampsia danthonioides D. McClain 1969-4-18 McClain 44 Butte 400 yds. n. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 488 Comment
  CAS-BOT-BC201744  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 Comment
  CHSC104840  Deschampsia elongata Lowell Ahart 2010-6-12 16799 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC38807  Deschampsia elongata Vernon Oswald 1983-6-14 687 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  UC120086  Dicentra formosa Mrs. R. M. Austin May 1889 66 Butte Comment
  CAS-BOT-BC402562  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CHSC2094  Dichelostemma capitatum subsp. capitatum N. Maxwell 1929-3-4 Butte Salmon Hole. 121 Comment
  CHSC28905  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-3-1 2332 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC4224  Dichelostemma capitatum subsp. capitatum J. Senter 1967-3-10 26 Butte Abundant along Upper Bidwell Rd. from Horseshoe Lake east, Chico. 152 Comment
  CAS-BOT-BC501088  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  CAS-BOT-BC501092  Dichelostemma multiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  HSC32643  Dichelostemma multiflorum Gary S. Lester 1974-4-20 97 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  SEINET10932619  Dichelostemma multiflorum A. Arthur Heller 1914-5-19 Heller 11421 Butte Hills 8 miles north of Oroville Comment
  CHSC4128  Dichelostemma volubile R. Carter 1966-4-26 371 Butte Found ca. 7 mi. E of Oroville on E side Feathervale Ave., 300' from Wyandott-LaPort Rd. 243 Comment
  CAS-BOT-BC502518  Dichelostemma volubile A. A. Heller; H. E. Brown 1902-5-8 5499 Butte Berry Canyon (Near Clear Creek) Comment
  SD6374  Dichelostemma volubile Mrs. R. M. Austin 1883-1 Butte No further locality information on label. Comment
  UCD139266  Dichelostemma volubile Don Blosser 1970-5-9 12 Butte on Skyline Blvd. near Skyline Way, 5 miles east of Oroville. Comment
  CHSC50704  Digitaria sanguinalis Lowell Ahart 1990-6-16 6519 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS95081  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  RSA724999  Digitaria sanguinalis L. Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  UCD163049  Diospyros virginiana var. virginiana D. O. Burge 2015-9-21 1832 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CAS-BOT-BC151924  Diplacus douglasii H. E. Brown 1897-4-15 198 Butte Near Clear Creek Comment
  CHSC44824  Diplacus grandiflorus R. Banchero 1980-5-7 145 Butte Near the jct of Bear Ranch Creek and Hwy 70, ca 0.3 mi SW of Arch Rock Tunnel. 609 Comment
  SEINET8340789  Diplacus grandiflorus Lowell Ahart 2006-5-10 12617 Butte Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, abotu 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CAS-BOT-BC153216  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte About the Clear Creek-Paradise grade Comment
  CHSC44760  Diplacus kelloggii R. Banchero 1980-6-12 214 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CAS-BOT-BC217026  Diplacus layneae Javier Penalosa 1962-6-18 2474 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC58959  Diplacus leptaleus Lowell Ahart 1992-7-29 6870 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  CHSC44730  Diplacus torreyi R. Banchero 1980-6-16 233 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, ca 5 mi NE of the jct of Humbolt Rd and Hwy32. 1292 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
  CHSC1802  Diplacus tricolor R. Carter 1965-3-30 175 Butte Found on Whurlitzer Ranch NW of Chico. 50 yards inside of gate. 60 Comment
  SEINET8255121  Diplacus tricolor K. L. Chambers 1991-4-30 5551 Butte junction of Hwy. 99 with Hwy. 149, between Chico and Oroville. Comment
  CHSC43657  Dipsacus fullonum Vernon Oswald 1987-7-23 3149 Butte W side of Hwy 99 at the Butte-Tehama county line. 59 Comment
  CHSC118288  Dittrichia graveolens Robin Carter; Sabrina Bell 2017-4-1 s.n. Butte Northern Sierra Nevada Foothills. CA 3.8 air mi NE of Oroville and 1.2 mi NE of Oroville Dam, off N end of Kelly Ridge on edge of Bidwell Canyon Boat Ramp. 256 Comment
  CHSC97711  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
  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
  CHSC88972  Dodecatheon clevelandii subsp. patulum Christine Hantelman 2000-2-23 9 Butte Baccala ranch 1/4 mi east past end of Wookey Road. 114 Comment
  CHSC92570  Dodecatheon clevelandii subsp. patulum L. P. Janeway 2005-3-1 8338 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UC1594616  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  SEINET10458511  Downingia bella Lowell Ahart 1984-5-7 Ahart 4587 Butte T17N R4E. Peter Ahart Ranch, ca. 1.5 mi N and 0.5 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  SEINET10458513  Downingia bicornuta Lowell Ahart 1984-5-8 Ahart 4599 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  SEINET12326987  Downingia cuspidata Unknown 1984-1 15 Butte Oroville, Small drainage area crossing Cottonwood Rd., S side, 3.2 mi E of its junction with State 46 Comment
  UC1244057  Downingia montana John R. Swanson 1959-6-13 461 Butte 300 yds w jct. of Camp Lassen rd. (Boy Scouts) with State Hwy. 32; Butte Meadows 1341 Comment
  UC765626  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC108716  Drosera rotundifolia B. Castro; L. P. Janeway 2002-7-7 1377 Butte High Cascade Range. Soggy sedge-dominated meadow ... Field redacted by CHSC, contact the data manager for more information 170 Comment
  CHSC45270  Drosera rotundifolia Vernon Oswald 1984-7-12 1568 Butte Skyway 1.4 mi s of Inskip. ... Field redacted by CHSC, contact the data manager for more information 1402 Comment
  POM34663  Drymocallis glandulosa var. glandulosa C. C. Bruce 1898-05 2436 Butte Butte Creek. Comment
  UC600382  Drymocallis lactea var. austiniae H. F. Copeland 1932-7-16 Butte n summit (Jonesville); Jonesville Comment
  CHSC3410  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  CHSC39839  Dryopteris arguta Ruby Gist 1935-5-4 Butte Humboldt Rd. Comment
  CAS-BOT-BC70856  Dryopteris arguta Lowell Ahart 1975-3-7 s.n. Butte 1/2 mile from the Forbestown Reservoir, Forbestown 365 Comment
  UC115208  Dudleya cymosa Mrs. R. M. Austin May 1896 117 Butte Iron Canyon Comment
  CHSC113123  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC42731  Dysphania botrys Lowell Ahart 1987-5-27 5712 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
  CHSC62447  Dysphania botrys L. P. Janeway 1993-9-3 4581 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  UCD98719  Dysphania botrys H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles S of Oroville. Comment
  CHSC74084  Dysphania pumilio B. Castro 1996-8-20 716 Butte Ca 5 air mi N of Brush Creek, ca 0.25 mi S of Rogers Cow Camp via 'J' spur rd S of USFS Rd 23N15. 1222 Comment
  JEPS121306  Dysphania pumilio Lowell Ahart 2013-11-29 19292 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
  UCD98820  Dysphania pumilio A. A. Heller 1914-7-20 11580 Butte Hills 8 miles north of Oroville. Comment
  CDA7122  Echinochloa colona L. Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CHSC88925  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  CHSC99647  Echinochloa colona H. Koeth 2007-5-5 Butte End of Santa Clara Ave. off Rose Ave., Chico. UTM 10 609663E 4406233N. 57 Comment
  UCD60918  Echinochloa crus-galli L. Ahart 1984-9-17 4791 -B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CAS-BOT-BC197252  Echinochloa muricata Lowell Ahart 1985-11-7 5240 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  CAS-BOT-BC208564  Echinochloa oryzicola Lowell Ahart 1984-9-17 4792 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 854 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., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  JEPS120762  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC38760  Echinodorus berteroi Vernon Oswald 1983-6-18 714 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. Along the receding n shore of the lake. 100 Comment
  CHSC114971  Elatine Lowell Ahart 2015-3-31 19983 Butte Bottom of a large duck field, 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6-1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC115334  Elatine Lowell Ahart 2015-4-24 20070 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC113536  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  JEPS122236  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. Comment
  POM312315  Elatine ambigua H. L. Mason, Verne Grant, C. T. Mason 1946-8-15 13052 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink. Comment
  UCD49690  Eleocharis acicularis var. occidentalis L. Ahart 2000-10-2 8699 Butte Normal sized plants, on wet bare sand, 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
  CAS-BOT-BC113454  Eleocharis bella Lowell Ahart 1981-8-15 3030 Butte Ca. 1.5 miles S of Snag Lake (ca. 3 mi S of Jonesville). 1726 Comment
  CHSC42383  Eleocharis bella Lowell Ahart 1987-5-27 5694 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM196137  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 Comment
  SD425  Eleocharis bella E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC79601  Eleocharis bolanderi G. F. Hrusa; T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 815 Comment
  CHSC94332  Eleocharis decumbens Lowell Ahart 2006-7-25 13060 Butte In the west part 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
  JEPS103109  Eleocharis decumbens L. P. Janeway, B. Castro 2002-7-7 7608 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CAS-BOT-BC113367  Eleocharis engelmannii Beecher Crampton 1957-9-17 4623 Butte Biggs Rice Experiment Station, 5 mi NW of Biggs. Comment
  CHSC78193  Eleocharis engelmannii Lowell Ahart 2000-5-18 8370 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CAS-BOT-BC112791  Eleocharis macrostachya Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC45175  Eleocharis macrostachya Lowell Ahart 1979-6-2 1913 Butte Bottom of a large wash in one of the farmed fields, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC55452  Eleocharis macrostachya L. P. Janeway 1991-4-7 3992 Butte Ca 0.3 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 30 Comment
  CHSC68430  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1916 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC78924  Eleocharis macrostachya Lowell Ahart 2000-10-2 8702 Butte On the east side of the Sacramento River, northeast 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
  SD427  Eleocharis macrostachya E. B. Copeland 1931-7-15 Butte Jonesville; in and beside the Lily Pond, a permanent pool. 533 Comment
  UC392232  Eleocharis macrostachya E. B. Copeland 1929-7-29 Butte Jonesville, by lily pond near Butte Creek House 1750 Comment
  CHSC76426  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 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
  RSA695401  Eleocharis obtusa var. engelmannii L. Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  UC143762  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  SEINET9770291 Image available Eleocharis quadrangulata Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  RSA500437  Eleocharis quadrangulata Vernon H. Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the W side of Cana Pine Creek Road just S of the Tehama Co. line. 55 Comment
  JEPS98389  Eleocharis quinqueflora Lowell Ahart 2000-6-17 8488 Butte 7 air mi N of Oroville Oroville (North Table Mountain, W side of Cherokee Rd, S margin large spring-like area, W of lone oak tree, W of cow shute and large parking area) 403 Comment
  CHSC78568  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  JEPS98377  Eleocharis radicans Lowell Ahart 2000-10-2 8700 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  JEPS98610  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC49634  Elodea canadensis Vernon Oswald 1988-5-19 3325 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a marchy pond located along an old chanel of the Sacramento River. 45 Comment
  CAS-BOT-BC227296  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  SEINET10564666  Elymus elymoides Edwin B. Copel 1929-7-24 Copeland 340 Butte Jonesville. In dry, open, yellow-pine woods. 1575 Comment
  CHSC49574  Elymus elymoides subsp. californicus Vernon H. Oswald 1983-6-22 731 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC109618  Elymus glaucus subsp. glaucus Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico 76 Comment
  CAS-BOT-BC234104  Elymus multisetus Lowell Ahart 1983-6-26 4114 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville, Sierra Nevada 500 Comment
  CAS-BOT-BC204202  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls 1310 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  CHSC44172  Elytrigia elongata V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca. 3 mi (air) se of Jonesville on Humbug Rd, ca. 0.3 mi w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. Roadside. 1755 Comment
  CHSC78406  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 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
  CAS-BOT-BC227813  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico Comment
  SEINET12192477  Epilobium adenocaulon E. L. Rilla 1976-1 29 Butte 0.5 mi S of Gridley Road on Pennington Road in Gray Lodge Waterfowl Management area 21 Comment
  SEINET10874040  Epilobium adenocaulon var. parishii Mary Susan Taylor 1979-8-4 Taylor 2180 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  POM193366  Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  CHSC69450  Epilobium brachycarpum Lowell Ahart 1997-9-6 7888 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC27723  Epilobium canum subsp. latifolium Robert A. Schlising 1978-10-10 3344 Butte Hwy 70, Feather River Canyon, from 0.2 to 0.5 mi north of Arch Rock Tunnel; roadside. Comment
  CHSC102606  Epilobium ciliatum subsp. ciliatum L. P. Janeway; B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC105515  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2010-9-28 17248 Butte On damp rocky soil, along west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  POM214025  Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte Jonesville. 1500 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  CHSC26796  Epilobium minutum M. S. Taylor 1978-5-6 1572 Butte By RR tracks, Magalia. 609 Comment
  CHSC38064  Epilobium minutum R. E. Preston 1982-4-22 255 Butte Ca. 4 mi SW of Paradise. 286 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
  CHSC70334  Epilobium minutum R. A. Schlising 1983-6-9 4419 Butte N part of county, along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo. Carpenter Ridge. 1356 Comment
  CHSC90828  Epilobium minutum Lowell Ahart 2005-5-2 11764 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
  JEPS123820  Epilobium minutum Lowell Ahart 2015-4-18 20052 Butte About 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  RSA712800  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  UCD106785  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. 2000 Comment
  CHSC1088  Epilobium pallidum V. Holt 1935-5-11 Butte Salmon Hole on Chico Creek. 152 Comment
  UC172853  Epilobium pallidum A. A. Heller 1912-5-23 10750 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28716  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  JEPS115564  Epilobium torreyi Lowell Ahart 2009-5-23 15755 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  SEINET7073008 Image available Epilobium torreyi A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  UC725392  Epilobium torreyi A. A. Heller 1938-5-22 15107 Butte near Chico Airport (in field just above the alluvial valley proper) 91 Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CHSC116290  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  UC600577  Equisetum hyemale subsp. affine H. F. Copeland 1920-5-23 226 Butte Jonesville Comment
  CAS-BOT-BC204458  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  SD122514  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, circa 1.5 miles North and 1.7 miles East of Honcut, circa 12 miles South of Oroville. 49 Comment
  CHSC51035  Eragrostis hypnoides Lowell Ahart 1990-7-15 6557 Butte Along a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC284086  Eragrostis pectinacea var. pectinacea John Thomas Howell 1961-9-22 36786 Butte North Fork of Feather River ne. of Pulga, Sierra Nevada Comment
  CHSC30530  Eragrostis pectinacea var. pectinacea M. Merryman; R. Banchero 1979-9-23 48 Butte SW of Chico, just e of Ord Ferry and Sacramento River. Riverbank. 30 Comment
  CHSC76430  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 Butte On the west side of a pond, 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
  UC1130391  Eremocarpus setiger F. W. Embree 1934-5-3 51 Butte 2 mi ese Pacific Heights; Marysville Quadrangle Comment
  CHSC35048  Eremogone cliftonii R. Schlising 1980-7-11 3882 Butte NE part of county at south end of Walker Plains. 1536 Comment
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Jul 8 2014
  CHSC61630  Ericameria bloomeri Lowell Ahart 1993-9-8 7172 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  UC31170  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  UC1594581  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte along gulch about 1.25 mi w Oroville Dam; Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  SEINET10473744  Erigeron inornatus Lowell Ahart 1983-8-16 Ahart 4284 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC11840  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Jonesville. 1550 Comment
  POM55203  Erigeron inornatus var. inornatus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10474626  Erigeron inornatus var. viscidulus Mary Susan Taylor 1981-6-19 Taylor 3962 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC44154  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
  HSC96979  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  CHSC30810  Eriodictyon californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2532 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  CHSC58275  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  UCR190686  Eriodictyon californicum 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
  CHSC91480  Eriogonum lobbii L. P. Janeway; Linnea Hanson 2005-6-29 8446 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  CHSC58939  Eriogonum marifolium var. marifolium Lowell Ahart 1992-7-29 6892 Butte Around and on rocks, about 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  RSA781347  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Humboldt road. Comment
  POM306151  Eriogonum nudum var. oblongifolium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CAS-BOT-BC268614  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  CHSC112071  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; 'Magalia Serpentine' (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 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
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  SEINET11935016  Eriogonum umbellatum var. speciosum R. A. Schulising 1981-1 4136 Butte NE part of county,T22N,R5E,sec.2;serpentine outcrop along Coyote Gap Road,ca .5mi S of Coyote Gap 1219 Comment
  CHSC45481  Eriogonum ursinum var. ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak. 2133 Comment
  CHSC102182  Eriogonum vimineum George W. Hartwell 2009-6-30 Butte Concow Road, approx. 3-4 miles above Concow Reservoir on serpentine ridge burned by wildfire in summer 2008. 858 Comment
  CHSC33642  Eriogonum vimineum M. Merryman; D. Ikeda 1979-9-2 23 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 950 Comment
  CHSC45482  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Growing on dry gravel bars along North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC45950  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-7 626 Butte On a gravel bar along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC84884  Eriophorum gracile R. D. Fischer 2003-6-29 9 Butte Northern Sierra Nevada. Chico Meadows, 1 mile north of Butte Meadows on rd 26N09 in the Boy Scout Camp, Camp Lassen. In mdw just north of the lake. 1280 Comment
  CDA13336  Eriophyllum lanatum var. croceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13182 Butte Sierra Nevada; On USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Comment
  CHSC35696  Eriophyllum lanatum var. croceum J. D. Jokerst 1982-5-1 1547 B Butte N of Concow Resv. N. of Hoffman Rd, ca. 2.0 mi E of Concow Rd. Comment
  SEINET10904848  Eriophyllum lanatum var. croceum Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3520 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  CAS-BOT-BC308169  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  RSA754545  Eriophyllum lanatum var. grandiflorum L. Ahart 2009-5-23 15770 Butte N side of Ten Mile House Road, just SE of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SFV3891  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 92 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  RSA726264  Erodium botrys R. R. Halse 2002-3-27 6154 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  SEINET7057334  Erodium botrys Richard R. Halse 2002-3-27 6154 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway ca. 8 miles northwest of Chico. Elevation 40 meter. 40 Comment
  JEPS17429  Eryngium aristulatum var. aristulatum W. L. Jepson 1934-5-4 16608 Butte 1 1/2 mi. s. Nord (near Sacramento R., swales of Pine Creek) Comment
  UCD127480  Eryngium articulatum Herbert L. Mason; Verne Grant 1946-9-4 13103 Butte Colusa Gun Club. Comment
  CHSC31894  Eryngium castrense L. Ahart 1977-6-3 1401 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM219573  Eryngium castrense H. F. Copeland 1923-7-9 34 Butte Mud Creek Ranch Comment
  CHSC94047  Erysimum capitatum var. capitatum R. D. Fischer 2005-4-30 719 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy north facing slope with oak overstory. 518 Comment
  CHSC91264  Erythranthe bicolor L. P. Janeway 2005-5-29 8398 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC44750  Erythranthe breweri R. Banchero 1980-6-13 223 Butte Little Bald Rock, ca 1.0 mi E of Bald Rock Rd. 1036 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 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
  CHSC93344  Erythranthe geniculata Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CAS-BOT-BC153855  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 miles east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC44944  Erythranthe glaucescens Cathy Young 1988-4-23 8 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC45718  Erythranthe glaucescens M. S. Taylor 1974-4-30 193 Butte The Horse Trough on side of Cohasset Rd., ca. 6 mi n of Chico Municiple Airport. Comment
  SEINET8400618  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte low ground 12 miles north of Chico. Comment
  CHSC104814  Erythranthe guttata Lowell Ahart 2010-6-9 16775 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
  CHSC116308  Erythranthe guttata Lowell Ahart 2015-11-18 20662 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
  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
  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
  CHSC11896  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  CAS-BOT-BC504536  Erythronium multiscapideum John Thomas Howell 1962-6-15 37497 Butte Magalia 731 Comment
  SEINET3992253  Erythronium multiscapideum Rimo Bacigalupi, G. T. Robbins, F. Chisaki 1956-4-19 5601 Butte 1/2 mile north of Magalia 732 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  CAS-BOT-BC402643  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  CAS-BOT-BC402966  Eschscholzia californica Mrs. C. C. Bruce 1897-5-1 2022 Butte Fields near Chico Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  CHSC24152  Eschscholzia lobbii B. Bunge 1976-4-20 15 Butte Ca. 100 yd of Skyway, 5 mi ese of Chico. 213 Comment
  CHSC85392  Eschscholzia lobbii John Dittes; Josephine Guardino 1992-5-7 482 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
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  CHSC106116  Eucalyptus sideroxylon L. P. Janeway 2011-2-28 10227 Butte Sacramento Valley. Along a bench on the north side of the levee on the south side of Feather River just east of Centennial Park, Oroville. 49 Comment
  CHSC11090  Euphorbia crenulata Lowell Ahart 1969-5-20 Butte Near Centerville, 10 miles N.E. of Chico. 457 Comment
  CHSC612  Euphorbia crenulata I. Huffman 1930-5-20 Butte Paradise. 548 Comment
  RSA126022  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville. 701 Comment
  JEPS122246  Euphorbia maculata Lowell Ahart 2014-9-23 19864 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 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
  CHSC108177  Eurybia radulina L. P. Janeway 2011-8-17 10661 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  CAS-BOT-BC413862  Fallopia convolvulus John Thomas Howell 1962-6-15 37463 Butte Magalia 731 Comment
  CHSC113229  Festuca bromoides Lowell Ahart 2014-4-25 19408 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC118578  Festuca californica Nancy Groshong 2017-4-30 2 Butte Magalia Serpentine. South side of Coutelenc Road east of Skyway. 701 Comment
  CHSC49546  Festuca californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir. At the edge of the road bordering the reservoir. 1005 Comment
  SEINET10560456  Festuca californica BOS 1978-3-28 BOS 7 Butte Along Oakway Rd., 5 mi ENE of Magalia, E of Feather River. Foothill Woodland. 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
  CHSC110388  Festuca multiflora Lowell Ahart 2012-9-28 18472 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  JEPS120095  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC77690  Ficus carica John Thomas Howell 1959-9-20 34712 Butte Feather River Highway at West Branch bridge 152 Comment
  CAS-BOT-BC112357  Fimbristylis autumnalis V. Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the W end of Cana Rd., Comment
  CHSC50551  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4340 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. Along the south boundary fence in section 27. 1780 Comment
  CAS-BOT-BC52507  Frangula californica subsp. californica C. H. M. 1919-11-21 s.n. Butte Chico Comment
  CAS-BOT-BC55649  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  UCD121432  Frasera albicaulis var. nitida L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC33998  Fraxinus americana Carl Pejsa 1980-4-12 51 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC223388  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC29098  Fraxinus dipetala M. S. Taylor; J. D. Jokerst 1980-4-18 2522 Butte On dry bluff, on e side side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  CHSC109647  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, aobut 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC42761  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC42222  Fremontodendron californicum Mary H. Hardin 1986-4-21 19 Butte Ca 1 1/2 mi ese of Cohasset Hwy, 9 mi nne of Chico in chaparral. 518 Comment
  CAS-BOT-BC136071  Fritillaria affinis Vesta Holt 1931-3-9 s.n. Butte Near Chico Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  CAS-BOT-BC130318  Fritillaria eastwoodiae Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CHSC49654  Fritillaria eastwoodiae Vernon Oswald 1984-4-9 1137 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC9265  Fritillaria eastwoodiae D. C. Burns 1971-4-4 122 Butte Growing on n side of highway 70, ca. 10 yds. Up a steep bank, ca. 20 mi n of Oroville on highway 70, (30 yds. E of Jarbo Gap Cafe). 710 Comment
  CAS-BOT-BC505285  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Above the road cut bank along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  SEINET10469566  Fritillaria micrantha Lowell Ahart 1983-4-14 Ahart 3933 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC2282  Fritillaria pluriflora N. Maxwell 1929-3-4 Butte Near Shasta Union School. 60 Comment
  POM109764  Fritillaria pluriflora C. C. Bruce 1897-02 s.n. Butte Fields Comment
  CHSC102189  Fritillaria recurva George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 861 Comment
  CHSC12113  Fritillaria recurva M. F. Smith 1972-4-22 2 Butte Northeast corner of section 23, two (2) miles south of Feather Falls community. 914 Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  HSC23351  Fritillaria recurva T. C. DeWitt 1971-3-26 8 Butte S side of Butte Creek near Honey Run covered bridge 59 Comment
  JEPS97588  Fritillaria recurva R. D. Stone and W. B. Davilla 1984-4-21 595 Butte ca. 0.6 mi ENE of De Sabla Powerhouse; Butte Creek drainage 701 Comment
  RSA32885  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte Near Stirling Comment
  SEINET5725074 Image available Fritillaria recurva Gary L. Carlin 1971-1 17 Butte Vildas Road, 2.5 miles east of Cohasset; Cohasset Comment
  SEINET10836847  Galium Mary Susan Taylor 1975-3-10 Taylor 405 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
  CHSC27271  Galium aparine P. Moyer 1972-4-9 159 Butte CSUC Campus. S bank of Chico Ck., W of Warner St. Bridge. 60 Comment
  CHSC30016  Galium aparine L. Ahart 1980-5-4 2158 Butte South-west of intersection of Nelson Ave and 20th St, in Thermalito. 65 Comment
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC11821  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  SEINET10968826  Galium bolanderi Mary Susan Taylor 1981-5-5 Taylor 3611 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. 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 community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  SEINET12285551  Galium grayanum subsp. grayanum Unknown 1959-1 5937 Butte summit above Jonesville, ridge E of pass 2134 Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  CDA6670  Galium mollugo Sterling O. Mattoon 1962-5-2 Butte Jesse Ranch, Nord Avenue at Bell Road, Chico. 0 Comment
  CDA6671  Galium mollugo Sterling O. Mattoon, L. C. Going 1962-6-19 Butte Southwest of Nord Avenue & Bell Road, Chico. 0 Comment
  POM68694  Galium nuttallii var. tenue C. C. Bruce 1897-05 1934 Butte Little Chico. Comment
  CHSC28690  Galium parisiense M. S. Taylor 1979-5-6 2000 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA6657  Galium parisiense Don Black 6 Jul [year missing] Butte R1 Box 491, Chico. 0 Comment
  CHSC101187  Galium porrigens L. P. Janeway; B. Castro 2009-4-18 9725 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 747 Comment
  CHSC90038  Galium porrigens var. tenue Gerold C. Grant 1990-4-23 23 Butte NE side of Crown Point road and ca. 40 m se of Highway 32, 19.1 km ne of Chico. Roadside. 580 Comment
  UC1523186  Galium porrigens var. tenue M. S. Taylor and L. Hanson 1981-3-16 3406 Butte e side Truex Rd ca 1/2 mi s jct. with Hwy 70 (ca 7 mi n of Oroville); Cherokee Quad. 304 Comment
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS122076  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC26740  Galium trifidum var. pacificum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1462 Butte Ca. 50 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1828 Comment
  CHSC73819  Galium triflorum B. Castro 1997-6-13 743 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1066 Comment
  JEPS120916  Gamochaeta ustulata Lowell Ahart 2013-5-27 18719 Butte About 50 yards S of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC6607  Gardenia jasminoides M. MacArthur 1968-6-17 294 Butte SE yard of Building U on the Chico State College Campus. 60 Comment
  CHSC3588  Garrya fremontii Susan Carrauthers 1966-3-5 29 Butte E. of city of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  CHSC48444  Garrya fremontii Vernon Oswald 1983-1-13 44 Butte Along Highway 32 ca. 8 mi n-e of Chico. 512 Comment
  SEINET12137328  Garrya fremontii M. S. Taylor, Pierce, E. 1981-1 3375 Butte both sides of Cohasset Hwy, ca 3 mi S of Cohasset Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  UCD66563  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  CAS-BOT-BC278702  Gastridium ventricosum Lowell Ahart 1980-5-25 2344 Butte Along Ponderosa Way 500 Comment
  CHSC108324  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  HSC87163  Gayophytum heterozygum Robert Banchero, Robert A. Schlising 1980-7-28 3926 Butte Chico Meadows, 1 mi. N of Butte Meadows 1317 Comment
  UC128808  Gayophytum heterozygum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville Comment
  UCD103535  Gayophytum heterozygum R. Banchero; R. A. Schlising 1980-7-7 3849 Butte NE of Village of Feather Falls, 0.7 mi N of Fall River Campground and bridge. Comment
  CAS-BOT-BC208059  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road 1000 Comment
  CHSC3174  Genista monspessulana Robert D. Briggs 1966-4-23 RE- 129 Butte Mesquete Jct, Reservoir, 6 miles due north of Magalia. Comment
  CHSC34812  Genista monspessulana M. S. Taylor 1981-5-5 3613 Butte W side of spur rd, ca. 1/2 mi n of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC105513  Gentianopsis simplex Lowell Ahart 2010-9-28 17245 Butte On wet humus, west edge of a 10 acre meadow, about 100 yards east of the poor dirt road, 10 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  UC600682  Gentianopsis simplex H. F. Copeland 1924-8-12 Butte Jonesville Comment
  CHSC101690  Geranium dissectum Lowell Ahart 2009-5-8 15663 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
  UCD103321  Geranium dissectum H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  SEINET10495130  Geranium molle Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4284 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CHSC42790  Geum macrophyllum L. P. Janeway 1987-6-26 2318 Butte SW end of Logue Meadows. 1325 Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC102506  Gilia capitata subsp. pedemontana Lowell Ahart 2009-5-30 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC1243  Gilia capitata subsp. pedemontana J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 91 Comment
  UC879807  Gilia capitata subsp. pedemontana Ira W. Clokey 13384 a Butte near Chico (at the Hooker Oak); near Chico, at the Hooker Oak Comment
  JEPS117152  Gilia tricolor subsp. tricolor Lowell Ahart 2010-4-30 16606 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  SBBG17367  Gilia tricolor subsp. tricolor M. Vincent 1961-3-29 10 Butte Skyway on rd from Paradise to Chico overlooking "Little Grand Cyn" Comment
  CAS-BOT-BC266484  Githopsis diffusa Lowell Ahart 1987-5-12 5651 Butte S of Lumpkin Ridge Road, 1.5 miles NE of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  SEINET10840481  Githopsis pulchella subsp. campestris Edwards EDWARDS s.n. Butte Comment
  CHSC67358  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2221 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  SEINET10537440  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  CAS-BOT-BC435022  Glinus radiatus C. C. Parry No date on label s.n. Butte Chico Comment
  CHSC49551  Glyceria elata Vernon Oswald 1987-6-8 2958 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  SEINET10839251  Gnaphalium chilense Mary Susan Taylor 1981-1-5 Taylor 3372 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CAS-BOT-BC302473  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  UC478463  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte in places along Butte Creek; Jonesville Comment
  CHSC33666  Goodyera oblongifolia R. E. Preston 1981-7-28 114 Butte Ca. 5.0 km se of Butte Meadows. 1590 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
  CHSC26817  Gratiola ebracteata M. S. Taylor 1978-5-7 1599 Butte Richvale pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC31870  Gratiola ebracteata L. Ahart 1974-4-14 411 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  CAS-BOT-BC282856  Hainardia cylindrica Lowell Ahart 1980-6-15 2382 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC75336  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC109773  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SD241752  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte Damp soil of dredge piles, no 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
  CHSC51854  Helenium bigelovii L. P. Janeway 1987-7-5 2439 Butte 0.4 mi E on a spur road from the Concow Rd, thence 1.0 mi SW from Jones Mdw. 1798 Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  UC179688  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte hills 8 mi n Oroville Comment
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CHSC102959  Helianthus bolanderi Lowell Ahart 2009-8-3 16265 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC20681  Helianthus bolanderi M. S. Taylor 1975-6-30 809 Butte In ditches on e side of Cohasset Hwy, ca. 2 mi n of Chico. 91 Comment
  RSA771482  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte 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
  CAS-BOT-BC305516  Helianthus bolanderi William Anderson 1964-8-16 s.n. Butte Butte Creek Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  CAS-BOT-BC314999  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte North of Bean Creek Road about 0189 mile south-east of Little Bald Rock 975 Comment
  CHSC28784  Hemizonia congesta subsp. luzulifolia J. D. Jokerst 1979-9-8 337 Butte Adjacent to fresh-water marsh. East of Chico-Butte City Hwy., 0.5 mi. N. of intersection with Nelson West Rd. Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  CHSC62723  Herniaria hirsuta subsp. hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). At edge of graveled road. 731 Comment
  CHSC90475  Hesperevax acaulis var. ambusticola Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  SEINET12023140  Hesperocnide tenella Unknown 1974-1 338 Butte Peter Ahart Ranch, about 1 mi N and 1 1/4 mi E of Honcut, about 12 mi S of Oroville 46 Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC30084  Heterocodon rariflorum M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3191 Butte Big Bald Rock. Ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC84408  Heterocodon rariflorum Lowell Ahart 2003-7-30 10460 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  NY43614  Heteromeles arbutifolia S. Bianco 1995-11-3 1050 Butte 0.25km N of Concow School, on S end of Concow Rd 549 Comment
  CHSC101754  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 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
  SEINET10970395  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 Ahart 4019 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CAS-BOT-BC203377  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  CHSC38547  Hibiscus lasiocarpos var. occidentalis Vernon Oswald 1983-7-22 899 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. at Parking Area L (Diversion Dam). 128 Comment
  SD5139  Hieracium albiflorum E. B. Copeland 1930-7-16 Butte Jonesville. 1600 Comment
  POM27988  Hoita macrostachya C. C. Bruce 1897-06 1980 Butte Little Chico. Comment
  CHSC84695  Hoita orbicularis L. P. Janeway 2003-6-8 7822 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  CAS-BOT-BC280710  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows 1371 Comment
  CAS-BOT-BC280717  Holcus lanatus L. L. Heinrichs 1964-4-28 s.n. Butte C. L. Boynton prop., across Hwy 40 Alt. from Berkeley Olive Assoc., Oroville Comment
  CAS-BOT-BC320295  Holocarpha virgata Lowell Ahart 1976-9-7 s.n. Butte Honcut 33 Comment
  CAS-BOT-BC150114  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville 2000 Comment
  SEINET10528776  Hookera californica A. Arthur Heller 1914-5-11 Heller 11389 Butte Hills 8 miles northof Oroville. Comment
  CHSC109604  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. 70 Comment
  CHSC113947  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC65995  Hordeum depressum Vernon H. Oswald 1996-5-9 7550 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. Comment
  CAS-BOT-BC284886  Hordeum murinum subsp. leporinum Lowell Ahart 1977-6-2 1509 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31385  Hordeum murinum subsp. leporinum J. D. Jokerst 1979-4-13 1193 Butte Top of North Table Mt., ca 200 meters N of the intersection of Cherokee Rd and the E edge of the mountain. 396 Comment
  CHSC38824  Hordeum murinum subsp. leporinum Vernon Oswald 1983-3-5 114 Butte Upper Bidwell Park, Chico, at the edge of the turn-around on the road to the Horse Arena. 82 Comment
  SEINET10591656  Hordeum vulgare J. G. Moore 1969-4-21 Moore 14 Butte West side of Salem St. between 7th & 8th St. Chico. Growing in association with Avena barbata, Triticum aestivum, & Bromus mollis. 61 Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CAS-BOT-BC536585  Horkelia californica var. elata Lowell Ahart 1984-5-28 4647 Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  SEINET10970305  Horkelia elata Mary Susan Taylor 1980-5-31 Taylor 2765 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC46589  Horkelia fusca subsp. parviflora Vernon H. Oswald 1989-7-4 3837 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. At edge of meadow. 1767 Comment
  CHSC44164  Horkelia fusca subsp. tenella V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  RSA126021  Horkelia tridentata E. K. Balls 1957-5-22 22506 Butte Hwy 40 , 18 miles NE from Oroville 701 Comment
  CHSC45799  Horkelia tridentata subsp. flavescens L. P. Janeway 1988-6-19 2833 Butte 3.1 mi N of Stirling City towards Inskip. Along logging rd 0.2 mi W of The Skyway. Meadow. 1219 Comment
  CAS-BOT-BC536249  Horkelia tridentata var. tridentata Lowell Ahart 1982-6-4 3538 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC28390  Hosackia oblongifolia J. D. Jokerst 1979-8-12 320 Butte 1.0 mi W. of Kimshew Falls and W. Branch Feather River. Along creek bed. Comment
  JEPS120934  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte About 50 yards SW of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  CAS-BOT-BC400825  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  RSA718779  Hypericum concinnum L. P. Janeway 2006-7-9 8805 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC401220  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC43254  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CHSC96883  Hypochaeris radicata Lowell Ahart 2007-6-12 14063 Butte East of high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  UCD118208  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  UC176159  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte near Stirling 1074 Comment
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 Comment
  RSA150570  Iris hartwegii Lee W. Lenz 1961-6-20 24350 Butte Feather River Canyon, between first and second power dams-- near Cresta power station Comment
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  CHSC35322  Iris macrosiphon M. S. Taylor; K. Tarp 1982-4-8 4289 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  CAS-BOT-BC69947  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  CAS-BOT-BC61870  Isoetes nuttallii Lowell Ahart 1983-6-12 4046 Butte 7 miles south-west of Feather Falls, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  JEPS106164  Isoetes orcuttii Lowell Ahart 2004-4-4 10726 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  SEINET10536079  Isopyrum occidentale Mary Susan Taylor 1980-4-6 Taylor 2460 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CAS-BOT-BC101961  Juglans hindsii Eric Walther 1928-9-1 s.n. Butte U.S. Experiment Station, Chico Comment
  CHSC6617  Juglans regia M. MacArthur 1968-6-13 307 Butte Parkinbg lot NE of Building U, Chico State College campus. 60 Comment
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS113877  Juncus acuminatus Lowell Ahart 2007-7-27 14396 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
  CHSC30435  Juncus articulatus L. Ahart 1980-7-29 2508 Butte Lower Forbestown Rd ca 1/4 mi N of the intersection with Robinson Mill Rd, W of the town of Forbestown. 750 Comment
  CHSC31925  Juncus bufonius var. bufonius J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 840 Butte 0.1 mi W of junction of Skyway and Humboldt Rd., N of and adjacent to the latter. Comment
  CHSC42378  Juncus bufonius var. bufonius Lowell Ahart 1987-5-6 5545 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC59017  Juncus bufonius var. bufonius Lowell Ahart 1992-7-27 6864 Butte Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC96541  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC38918  Juncus bufonius var. congestus Vernon Oswald 1983-6-7 648 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
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC26722  Juncus capitatus M. S. Taylor; M. Hayes 1978-4-14 1565 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
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. 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
  CHSC73491  Juncus dubius B. Castro; L. Gehrung 1995-7-26 597 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In center of moist meadow E of road. 1143 Comment
  CHSC96878  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14289 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  CHSC107583  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. Meadow in Yellow Pine Forest. 1133 Comment
  HSC95782  Juncus howellii L. Ahart 1997-7-11 7748 Butte N of dirt rd. SE of Cold Creek, about 2 mi SW of Bald Mtn. 1220 Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  JEPS108585  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. Nest to small creeklet 969 Comment
  CAS-BOT-BC110150  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-13 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC93376  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12541 Butte In a vernal pool, about 100 yards southeast of the fence and tower, pasture fields, about 7/8 mile north and 1 3/4 miles east of Honcut. 53 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
  CHSC99745  Juncus occidentalis Lowell Ahart 2008-6-13 14816 B Butte Along a small road, small meadow, bottom of an old gold mined area, about 180 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  CHSC113402  Juncus orthophyllus Lowell Ahart 2014-7-2 19543 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC52562  Juncus orthophyllus Henricus Jansen 1989-7-15 Butte Snag Lake, meadow. Comment
  CHSC66170  Juncus oxymeris Vernon H. Oswald; Lowell Ahart 1996-5-27 7659 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a marshy area on the S side of the levee road at the SW cor-ner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC96884  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  UCR208969  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte East side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Rd., about 13 miles (air) northeast of Oroville 1012 Comment
  UCR246367  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Northern Sierra Nevada Highlands (n SNH), near parking lot for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock 1050 Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  JEPS113764  Juncus usitatus Lowell Ahart 2007-7-27 14398 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
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 Comment
  UC577653  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte on Neal Road 8 mi se Chico 121 Comment
  UC2026866  Juniperus lusitanica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  CHSC43759  Keckiella corymbosa Vernon H. Oswald 1986-7-21 2213 Butte Little Butte Creek canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  NY790276  Keckiella corymbosa J. V. Monachino 1952-7-23 s.n. Butte Oroville, at outskirts of the city on the Feather River. Comment
  UCSB63845  Keckiella lemmonii Ahart, Lowell 1997-8-1 Butte on west side of Little Kimshew Creek; about 1/4 mi E of Table Mtn; about 8 mi NE of Stirling City; T24N R5E Section 4 1371 Comment
  CHSC43739  Kelloggia galioides Vernon Oswald 1983-7-6 815 Butte Near Humboldt Rd. (to Butte Meadows) 2.0 m NE of its jct. with Calif. Hwy. 32. 1386 Comment
  UC392182  Kelloggia galioides E. B. Copeland 1920-7-16 Butte Jonesville 1550 Comment
  CDA31990  Kickxia elatine L. Ahart 2007-10-31 14519 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. Comment
  SEINET10782600  Kickxia elatine Renate K. Stern 1972-9-19 Stern 3779 Butte Dry, open area, vic. E bank of the Sacramento River, Llano Seco Rancho, ca. 10 mi SW of Chico. Comment
  CHSC58287  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte Along a dirt road, near homestead, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/2 miles west of Oroville Dam. 76 Comment
  UCD141219  Kyllinga brevifolia B. Crampton 1962-2-20 s.n. Butte Oroville. Comment
  CHSC102737  Lactuca scariola var. integrata Lowell Ahart 2009-8-3 16251 Butte On the east side of Ten Mile House Road, just northeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET10872060  Lactuca scariola var. integrata Mary Susan Taylor 1979-11-11 Taylor 2280 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC102617  Lactuca serriola Lowell Ahart 2009-7-9 16024 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
  CHSC28571  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2283 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  JEPS115364  Lactuca serriola Lowell Ahart 2009-7-9 16024 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
  CAS-BOT-BC340534  Lactuca serriola John Thomas Howell 1975-6-15 51061 Butte Chico 60 Comment
  UCD133543  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham. Comment
  SEINET10473493  Lagophylla Mary Susan Taylor 1980-6-29 Taylor 2991 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CAS-BOT-BC341301  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC8158  Lasthenia californica D. McClain 1969-3-20 82 Butte 20 yds. from Upper Bidwell Park Rd., 1/2 mi. from entrance of Upper Bidwell Park, Chico. 60 Comment
  POM55149  Lasthenia californica A. A. Heller, H. E. Brown 1902-5-5 5450 Butte Near Chico Comment
  UC472261  Lasthenia californica subsp. californica Francis Ramaley 1917-5-6 11213 Butte near Chico 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
  CAS-BOT-BC213342  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  UC1562445  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte about 2 air mi se Jarbo Gap (near the Poe Power House, on the e side of the Feather River) 274 Comment
  UC217238  Lathyrus nevadensis var. nevadensis H. M. Hall 1917-5-11 10293 Butte Keefer Mill, on Honey Run grade Keefer Ridge 731 Comment
  SBBG121311  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte Jordan Hill Rd, ca. 1.5 mi NW of Concow Crk, ca. 1.5 mi W of Concow Reservoir 358 Comment
  CHSC25292  Lathyrus sulphureus M. S. Taylor 1977-7-15 1417 Butte On s side of Humboldt Rd, ca. 3 mi s of Paradise. 579 Comment
  SEINET10452338  Lathyrus sulphureus Lowell Ahart 1983-5-13 Ahart 3989 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC90986  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  CAS-BOT-BC321756  Layia fremontii A. A. Heller 1914-4-4 11292 Butte Hills 8 miles N of Oroville Comment
  SEINET11804894  Layia fremontii Unknown 1978-1 15 Butte N side Hwy 32, ca 1.4 mi E jct Hwy 99 & 32 at Chico 76 Comment
  UC179643  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte 12 mi n of Chico Comment
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC101742  Leontodon saxatilis subsp. longirostris Lowell Ahart 2009-5-23 15750 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC339119  Leontodon saxatilis subsp. saxatilis Lowell Ahart 1972-6-20 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 150 Comment
  RSA300953  Lepechinia calycina D. C. Michener 1982-7-28 4139 Butte CA 32 ca 9.3 miles northeast of jc with CA 99 near Chico. Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC46254  Lepidium dictyotum var. dictyotum Vernon Oswald 1989-4-20 3744 Butte Gray Lodge Wildlife Area, s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC38053  Lepidium didymum R. E. Preston 1983-4-9 383 Butte In the lawn at the edge of the sidewalk on the E side of Lassen Hall, campus of C.S.U., Chico. Comment
  CHSC34532  Lepidium nitidum R. E. Preston 1982-2-18 170 Butte Slope above s bank of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 182 Comment
  SEINET5326385  Lepidium nitidum var. nitidum R. R. Halse 2002-3-27 6153 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  JEPS98288  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte 3 mi W of Honcut (E margin of road to Honcut Substation, on S side of Lower Honcut Road, about 200 ft E of Hwy 70) 27 Comment
  CAS-BOT-BC13066  Lepidium virginicum var. menziesii H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50811  Leptochloa fusca subsp. fascicularis Vernon Oswald; Lowell Ahart 1990-7-31 4413 Butte Lake Oroville at Vinton Gulch, ca. 0.7 mi (air) north of Cherokee. Bordering streamlet on the strand of the lake below the level of the cement ramp. 259 Comment
  LA35680  Leptochloa fusca subsp. fascicularis H. S. Yates; 1936-8-14 6126 Butte 3 mi NW of Nelson 30 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
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  POM74009  Leptosiphon androsaceus C. C. Bruce 1897-04 1966 Butte [No locality information provided] Comment
  CHSC101312  Leptosiphon bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC31377  Leptosiphon bicolor Roberta A. Boer 1980-4-13 10 Butte Ca. 1/4 mi w of Foothill Blvd., 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  POM253017  Leptosiphon bicolor A. A. Heller 1938-4-11 15022 a Butte Back of the rifle range east of Chico. 91 Comment
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Jul 31 2010
  POM73982  Leptosiphon bicolor C. C. Bruce 1897-04 1962 Butte Butte Creek Comment
  CHSC2387  Leptosiphon parviflorus R. Carter 1965-4-12 176 Butte Found ca. 8 mi. E of Oroville ca. 1 mi. E of Lund Ranch house at end of Feathervale. 274 Comment
  RSA181940  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CHSC23377  Lessingia nemaclada Lowell Ahart 1975-9-4 977 Butte Along edge of Ponderosa Way two miles south-west of Feather Falls. 396 Comment
  CHSC94563  Lessingia nemaclada Lowell Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  RSA718954  Lessingia nemaclada L. Ahart 2006-9-28 13362 Butte About 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 481 Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  CAS-BOT-BC342058  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte Hills 8 miles north of Oroville Comment
  SEINET10449275  Leucothoe davisiae Mary Susan Taylor 1982-6-24 Taylor 4744 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  POM253222  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte Treeless summit of Table Mtn. Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  SEINET10863158  Lewisia triphylla Mary Susan Taylor 1976-5-3 Taylor 1103 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  SEINET10454495  Ligusticum grayi Mary Susan Taylor 1978-7-18 Taylor 1679 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
  CHSC106058  Ligustrum lucidum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17041 Butte Golf Course, about 20 yards west of the club house, Upper Bidwell Park, about one mile east of the east edge of Chico. 89 Comment
  JEPS94189  Lilaea scilloides Lowell Ahart 1998-4-29 7954 Butte ca. 7 mi. n. Oroville (n.e. of large parking area on North Table Mt., on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  CHSC115483  Lilium humboldtii subsp. humboldtii L. P. Janeway; Emily Meigs Doe 2015-4-14 11665 Butte Northern High Sierra Nevada. Plumas National Fore ... Field redacted by CHSC, contact the data manager for more information 747 Comment
  CHSC41464  Lilium washingtonianum Lowell Ahart 1986-7-2 5335 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  UCR188703  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
  SEINET10495211  Limnanthes alba Mary Susan Taylor 1976-4-27 Taylor 1094 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  SEINET10495213  Limnanthes alba Mary Susan Taylor 1978-5-6 Taylor 1622 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  SEINET12183347  Limnanthes douglasii Unknown 1984-1 43 Butte ca 10 yds N of Skyway and 4 mi E of Chico 122 Comment
  UC971796  Limnanthes douglasii Herbert L. Mason 1941-4-6 12415 Butte hills w Cherokee Comment
  CHSC3534  Limnanthes douglasii subsp. nivea John Francis 1966-3-28 85 Butte Table Mt., beside creek. Comment
  CHSC36137  Limnanthes douglasii subsp. nivea Linyi Maslin 1981-4-1 14 Butte Near water. North Table Mountain, ca. 5 km n of Oroville. 390 Comment
  CHSC38154  Limnanthes douglasii subsp. nivea J. D. Jokerst 1983-5-12 1767 Butte Along the intermittent creeks. Top of North Table Mountain, north of Cherokee Rd. 365 Comment
  CHSC83909  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, southwest of the 'sunken area,' on the top of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 310 Comment
  CHSC12114  Limnanthes douglasii subsp. rosea M. F. Smith 1972-3-7 3 Butte On Skyway about 500 ft. east of Notre Dame Ave. 60 Comment
  UC869482  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (hills below Oak Belt) Comment
  UC971795  Limnanthes douglasii subsp. rosea Charles T. Mason Jr. 1949-4-23 1257 Butte Hwy 99E 7 mi n Chico Comment
  HSC32645  Limnanthes douglasii subsp. rosea Gary S. Lester 1974-4-20 95 Butte Skyway Blvd., 1 mi. E of US 99 61 Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  RSA435676  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Road near Table Mountain. Comment
  SBBG17309  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Rd near Table Mtn Comment
  CHSC102548  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-31 Butte Northern Sacramento Valley. Near the base of the foothills in-between where Wookey Road and Munjar Road terminate. 97 Comment
  CHSC53968  Limnanthes floccosa subsp. floccosa Vernon H. Oswald 1991-4-24 4531 Butte Hwy 99 between Broyles Rd and Hamilton Nord Cana Hwy, north of Chico. Along drainages of the west side of Hwy 99. 59 Comment
  RSA715421  Limnophila X ludoviciana L. Ahart 2005-9-13 12368 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 29 Comment
  UCD128331  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  UCD169097  Limosella aquatica Ramona Robison 2013-4-16 14 Butte Clay Pit State Vehicular Recreation Area, located in pools within Clay Pit SVRA. 41 Comment
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  CHSC4190  Linanthus dichotomus Kathy Sommarstrom 1967-4-15 26 Butte Foothills. Found 400 yds west of covered bridge, 40 yds south of creek. 76 Comment
  POM73994  Linanthus dichotomus subsp. meridianus C. C. Bruce 1897-04 1967 Butte Near Deadwood Comment
  SEINET10496798  Linanthus filipes Mary Susan Taylor 1978-4-14 Taylor 1561 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
  CHSC89817  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Sacramento Valley. On edge of rice checks, fields of the Rice Experiment Station, W. Hamilton Rd., at Riceton Hwy, north of Biggs. Comment
  UCR146289  Lindernia dubia var. dubia Ellen Dean, Et al. 2001-8-20 857 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162; just south of main research buildings at field station, west of RR tracks and c. 2 E-W running dirt roads south of buildings; along E-W running dirt road 30 Comment
  CHSC112925  Linum bienne B. Castro; Sabrina Bell 2012-6-14 1929 Butte Sacramento Valley. 1.0 air mi E of Hwy 99 and 0.9 mi S of Hwy 162E on peninsula at E edge of Thermalito Afterbay. 42 Comment
  JEPS118008  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  SEINET12186045  Linum micranthum L. Ahart, Ahart, P. 1983-1 4094 Butte along Bloomer Hill Rd., 1.3 mi W of Oroville-Quincy Hwy, 15 mi NE of Oroville 450 Comment
  CHSC45179  Lipocarpha Lowell Ahart 1973-6-28 259 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC55620  Lipocarpha L. P. Janeway 1987-6-5 2142 Butte Border area of small pool, near confluence of Ram Creek and French Creek. 609 Comment
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC85004  Lipocarpha micrantha L. P. Janeway 2003-9-3 7974 Butte Northern High Sierra Nevada. A little below high water line on north side of South Fork Feather River arm of Lake Oroville, about 35 m west of the Enterprise Boat Ramp, about 1.6 km west-northwest of the north end of Enterprise Bridge. 268 Comment
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  CAS-BOT-BC36589  Lithocarpus densiflorus var. echinoides Lowell Ahart 1987-7-8 5811 Butte along Walker Plains road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CAS-BOT-BC430880  Lithophragma bolanderi Lowell Ahart 1980-5-25 2336 Butte Near Old Forbestown. 950 Comment
  CAS-BOT-BC430887  Lithophragma bolanderi C. F. Baker 1903-4-11 3041 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. Comment
  CHSC46271  Lithophragma campanulatum Vernon Oswald 1989-5-8 3761 Butte Feather Falls Trail, between the trailhead at the end of Bryant Ravine Rd and Frey Creek. 731 Comment
  RSA633337  Lithophragma parviflorum Michael A. Vincent, Ethan H. Freid 1998-4-6 8133 Butte Table Mountain Comment
  CHSC27667  Lithospermum californicum Mike O'Bryan; Robert A. Schlising 1978-4-17 3219 Butte N of Forest Ranch, on ridge above Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CHSC23721  Lobularia maritima L. V. Ritter 1969-4-12 144 Butte Ca 50 yds. s of Sandy Gulch, ca 200 yds. e of Longfellow Bridge Chico. 76 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CAS-BOT-BC342388  Logfia gallica A. A. Heller 1915-5-17 11880 Butte Along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC271205  Lolium temulentum Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC203667  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte 8 mi n Oroville Comment
  CHSC3873  Lomatium Susan Carrauthers 1966-3-14 56 Butte Ca. 4 mi. N.W. of city of Chico on Highway 32. Next to Lindo Channel. Comment
  CHSC3187  Lomatium caruifolium var. denticulatum Dona Kingsford 1966-3-12 Butte Location 1.5 miles SW of Hooker Oak Tree, Chico. Comment
  UC765836  Lomatium caruifolium var. denticulatum Robert F. Hoover 1936-5-21 1157 Butte 2 mi. n. Chico Comment
  SFV2592  Lomatium dasycarpum subsp. tomentosum M. L. Vincent 1962-4-15 175 Butte At intersection of Pentz and new alternate Highway 40. 13 miles south of Paradise. Roadside. 245 Comment
  CHSC42616  Lomatium macrocarpum Vernon Oswald 1985-4-3 1698 Butte Concow Rd. n of Lake Concow. 914 Comment
  SEINET10454504  Lomatium marginatum Lowell Ahart 1985-5-15 Ahart 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  UC566806  Lomatium nudicaule Herbert L. Mason 1927-5-11 3726 Butte vicinity of Dobbins 457 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
  CHSC77417  Lomatium utriculatum Laura Bogni 1997-3-25 23 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC83905  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC87443  Lomatium utriculatum R. D. Fischer 2004-3-28 77 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 500 ft south of Pine Trail junction. 399 Comment
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  UC1609418  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC104836  Lotus micranthus Lowell Ahart 2010-6-9 16778 Butte Along the sides and in the center 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
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  UC600394  Lotus purshianus var. purshianus H. F. Copeland 1932-7-24 Butte by small stream running down from the w to Butte Creek meadows Jonesville, Butte Creek Meadows Comment
  SEINET12165110  Lotus scoparius L. Ahart, Ahart, P. 1984-1 4691 Butte ca 1miSE of Hurleton, 1/12miE of Oak Grove Cemetary, ca 10miE of Oroville 500 Comment
  SEINET10874146  Lotus strigosus Lowell Ahart 1983-5-28 Ahart 4021 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  JEPS107759  Lotus wrangelianus Lowell Ahart 2005-5-11 11798 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  CHSC94571  Ludwigia palustris Lowell Ahart 2006-9-11 13333 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS100189  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Edge of road 292 Comment
  CHSC25007  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  CHSC39976  Lupinus andersonii L. Ahart; P. Ahart 1983-7-29 4250 Butte Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  JEPS97371  Lupinus angustiflorus Vernon H. Oswald 1995-8-2 7171 Butte T26N R5E ca. center NW1/4 Sec. 4, 6100 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 2.2 mi N of Jonesville Rd. (Forest Rd. 26N27) 1859 Comment
  CHSC62830  Lupinus bicolor Ella Icard 1893-1-1 Butte Comment
  SEINET10906992  Lupinus bicolor Mary Susan Taylor 1974-3-26 Taylor 96 Butte Ca. 1 mi E of Old City Dump, on Humboldt Rd, ca. 3 mi E of Chico; soil wet, rocky clay. Comment
  SEINET10452690  Lupinus latifolius subsp. longipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4235 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC48532  Lupinus latifolius var. columbianus Vernon Oswald 1987-6-29 3037 Butte Jones Meadow Rd. e of Inskip, 0.3 mi w of the intersection of the turn to Jones Meadow. 1706 Comment
  UC725350  Lupinus latifolius var. columbianus A. A. Heller 1940-6-5 15705 Butte Feather River Highway between Arch Rock Tunnel and Pulga; Feather River Highway btw Arch Rock Tunnel and Pulga Comment
  RSA715593  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada, south side of Cascade Creek 0.4 mile east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  CHSC84644  Lupinus microcarpus var. densiflorus Matt Quinn 2001-4-29 51 Butte Found on gravel bar on Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC75366  Lupinus microcarpus var. microcarpus Jennifer Slater 1997-4-12 17 Butte Upland area at the Wirlitzer addition of the Vina Plains Preserve, approx. one mile west of Hwy 99. 67 Comment
  UCD69696  Lupinus nanus Ellen Hammond 1982-4-18 17 Butte Top of Table Mountain, along parking area. 396 Comment
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  CHSC61212  Lupinus pachylobus Vernon H. Oswald; Lowell Ahart 1993-3-24 5243 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  UC75250  Lupinus pachylobus Copeland 1903-4-10 3043 Butte Chico Comment
  CAS-BOT-BC8228  Lupinus pennellianus Amos Arthur Heller 1940-6-5 15705 Butte Along the Feather River Higway between Arch Rock Tunnel and Pulga Comment
  CHSC30694  Lupinus stiversii M. S. Taylor 1980-5-27 2670 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC36543  Lupinus stiversii L. Ahart 1982-6-4 3547 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC329253  Lupinus stiversii Lowell Ahart 1982-6-15 3547 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls. 1000 Comment
  SEINET10907002  Lupinus vallicola Mary Susan Taylor 1982-5-2 Taylor 4381 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  SEINET10973223  Lupinus vallicola Mary Susan Taylor 1981-5-21 Taylor 3762 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  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
  SEINET10491004  Lupinus vallicola subsp. vallicola Taylor 1981-5-5 Taylor 3601 Butte Forbestown quad. E side of limpkin-laporte road, 1 mi n of enterprise bridge Over south fork feather river, ca 10 air mi e of oroville. Granitic soils. Associates: cheilanthes californica, diplacus grandiflorus, trifolium Microcephalum. 457 Comment
  CAS-BOT-BC436646  Luzula comosa var. laxa H. F. Copeland 1920-7-11 71 Butte Scotch John Meadows 1828 Comment
  CHSC113381  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC44171  Luzula divaricata V. Oswald; L. Ahart 1988-7-26 3629 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. Along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  CHSC31908  Luzula macrantha L. Ahart 1975-3-18 709 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  RSA0036439  Lycopus americanus Lowell A. Ahart 2012-10-20 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC116744  Lythrum hyssopifolia Lowell Ahart 2016-5-24 20861 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  JEPS98925  Madia citrigracilis Bruce G. Baldwin, Vern Oswald 1988-6-16 716 Butte along Camp Creek Road, near Pulga 512 Comment
  SFV4039  Madia citriodora M. L. Vincent 1960-9-8 91 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  CAS-BOT-BC342706  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC39519  Madia exigua Lowell Ahart 1983-6-12 4050 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  HSC96907  Madia exigua L. Ahart 2006-6-9 12650 Butte E side of Bardees Bar Rd., S of the small stream, about 1/4 mi. SW of the poor bridge scross the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. (air) SW of Pulga 404 Comment
  CHSC40301  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  JEPS104130  Madia gracilis Lowell Ahart 2003-6-30 10323 -A Butte Near the small stream, on the se side of Ponderosa Way, ca 2 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 578 Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  JEPS107879  Madia subspicata Lowell Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  POM218985  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville, at the Summit 2100 Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 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
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest 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
  CHSC43735  Malus Vernon Oswald 1987-3-30 2300 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch ne of Hwy 99. 70 Comment
  CHSC20126  Marah fabacea var. agrestis M. S. Taylor 1975-5-6 552 Butte On s side of Big Chico Creed, ca. 60 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC8557  Marah fabacea var. agrestis M. MacArthur 1968-6-18 211 Butte E side Big Chico Creek and just S of bridge by PSA bld., Chico State College. 60 Comment
  CHSC29019  Marah watsonii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2437 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi e of Oroville. 365 Comment
  CHSC42275  Marrubium vulgare L. P. Janeway; C. A. Janeway 1987-4-20 2009 Butte North side of hwy 32 at Ten Mile House Trail, ca 9 mi ne of the hwy 99 jct. 471 Comment
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 Comment
  JEPS115835  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  CHSC42751  Marsilea vestita Lowell Ahart 1987-8-8 5856 Butte Along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 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
  JEPS110231  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC20050  Matricaria discoidea M. S. Taylor 1975-4-11 456 Butte Along Upper Bidwell Park Road, near Salmon Hole, Upper Bidwell Park, Chico. Comment
  CAS-BOT-BC348086  Matricaria discoidea Lowell Ahart 1977-4-9 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC38580  Meconella californica Vernon Oswald 1983-3-16 188 Butte Upper Bidwell Park, Chico, beside the South Rim Trail just e of the barbed-wire fence. 121 Comment
  CHSC87562  Meconella californica R. D. Fischer 2004-3-28 144 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail below the north-end bluffs of the Disk Golf Course. UTM: 10608453E 4403974N. 311 Comment
  CDA30219  Medicago lupulina L. P. Janeway 2008-5-19 9365 Butte Sacramento Valley; East side Chico; east side of Highway 99 between 8th and 9th Streets, in the western part of the CalTrans Park & Ride area. Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS119788  Medicago lupulina Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC90496  Medicago polymorpha L. Orme 1980-3-15 3 Butte West of railroad tracks, 0.8 km southwest of Chico. Edge of a cultivated field. 55 Comment
  CHSC98966  Medicago polymorpha Lowell Ahart 2008-5-12 14757 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  UC204541  Medicago polymorpha A. A. Heller 1914-3-7 11186 Butte along a small stream in olive orchard 8 mi n Oroville Comment
  CHSC116524  Melia azedarach B. Castro 2013-4-25 1993 Butte Sacramento Valley. Just N of Chico, on W edge of Hwy 99 ca 150 ft N of its jcn with Wilson Landing Rd. 54 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA22913  Melica aristata L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 of a mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. Comment
  JEPS110265  Melica aristata Lowell Ahart 2006-6-24 12861 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1128 Comment
  JEPS113698  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
  CHSC67413  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2223 Butte Serpentine body, above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  UCD87019  Melica californica A. A. Heller 1918-5-5 13012 Butte Butte county. Near Magalia. Comment
  RSA585117  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Jonesville. 1524 Comment
  CAS-BOT-BC281299  Melica harfordii Lowell Ahart 1984-6-10 4713 Butte Along the Forbestown Diversion Dam, about 2 miles SW of the Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC3161  Melilotus albus Dona Kingsford 1966-4-30 Butte 9 miles SW of Hooker Oak Tree in Bidwell Park at Salmon Hole. Comment
  CHSC50325  Melilotus officinalis Vernon Oswald 1990-5-29 4259 Butte Hwy 99-Hwy 32 interchange in Chico. 65 Comment
  CDA4212  Melilotus officinalis L. Ahart 2001-6-1 8747 Butte On the south side of Biggs Princeton Road, about 1/2 mile east of Butte Creek, about 8 miles west of Biggs. Comment
  SEINET10870000  Melissa officinalis Mary Susan Taylor 1977-7-15 Taylor 1415 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  CAS-BOT-BC7430  Mentha arvensis f. brevipilosa Amos Arthur Heller 1914-7-11 11561 Butte Chico-Hamilton road, 6 miles NW of Chico Comment
  CHSC58924  Mentha canadensis Lowell Ahart 1992-7-23 6826 Butte Growing on the north side of Thermolito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  JEPS107540  Mentha spicata Lowell Ahart 2005-8-19 12334 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
  CHSC11074  Mentzelia laevicaulis Lowell Ahart 1968-7-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SD4159  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 Butte Jonesville 1500 Comment
  CAS-BOT-BC428759  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2042 Butte Little Chico Comment
  CHSC58955  Micranthes odontoloma Lowell Ahart 1992-7-26 6852 Butte On the edges of a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  SEINET7067142  Micropus californicus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee on the Cherokee Road. Coordinate datum: NAD27. Comment
  CHSC14005  Micropus californicus var. californicus D. Farrell 1974-4-30 15 Butte Collected ca. 5 mi ne of Oroville on top of Table Mountain. 388 Comment
  CHSC33366  Micropus californicus var. californicus Steven Azevedo 1980-4-16 18 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC90182  Micropus californicus var. californicus Thomas M. Scott 1989-4-19 13 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  SD116532  Micropus californicus var. californicus Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3279 Butte Peter Ahart Ranch; 2.5 miles northnortheast of Honcut. 29 Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  CHSC46961  Microseris douglasii Lowell Ahart 1976-4-14 1062 Butte In pasture field, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC473559  Microseris sylvatica L. S. Rose 1931-4-12 Butte Honcut Comment
  CHSC31775  Microsteris gracilis L. Ahart 1975-3-26 723 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10837198  Microsteris gracilis Mary Susan Taylor 1975-3-10 Taylor 409 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
  POM196544  Microsteris gracilis subsp. gracilis H. F. Copeland 1929-6-12 1202 Butte Jonesville. 1524 Comment
  JEPS32710  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1963-6-2 63079 Butte Rock Creek North Fork of Feather River 640 Comment
  POM43819  Mimulus bicolor C. C. Bruce 1897-05 2107 Butte Forest- Ranch. 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
  CHSC118857  Mimulus glaucescens Christopher T. Ivey 2017-5-27 389 Butte Honeyrun Road, about 3.5 km NE of drige crossing Butte Creek, roadside ditch. 193 Comment
  POM193342  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1550 Comment
  SEINET8246545  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Sierra Nevada at Chico Meadows. 1219 Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  RSA535808  Mimulus kelloggii David M. Thompson, Vernon H. Oswald 1988-3-24 852 Butte Upper Bidwell Park, Chico. 2.9 mi. beyond (N of) 4 barrels and sign in middle of road; just beyond end of paved road. W side of road on small cavelike rock formation on hillside, ca. 100 ft from road. 244 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
  CHSC42965  Mimulus moschatus Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44792  Mimulus moschatus R. Banchero 1980-6-17 247 Butte Ca 1.2 mi N of the jct of Coutolenc and Coutolenc-Hupp Rds, 0.7 mi S of the jct of the Skyway and Coutolenc Rds. 914 Comment
  CHSC44807  Mimulus moschatus R. Banchero 1980-5-7 147 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  RSA589915  Mimulus tilingii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7226 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  RSA0116104  Mimulus torreyi Lowell A. Ahart 2014-4-13 19660 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA80101  Mimulus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road. Comment
  CAS-BOT-BC174594  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS117713  Minuartia cismontana Lowell Ahart 2010-4-30 16602 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CHSC62724  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte Serpentine ridge, south of Serpentine Point and above Hwy. 70. 518 Comment
  CAS-BOT-BC433046  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  RSA4433  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC116646  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-11 20741 A Butte Peter Ahart Ranch, about 1-1/2 mile north and one mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  JEPS127080  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC113540  Mollugo verticillata Lowell Ahart 2014-9-23 19870 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
  CAS-BOT-BC435074  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CHSC38477  Monardella breweri subsp. lanceolata Vernon Oswald 1983-6-27 766 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CAS-BOT-BC219951  Monardella breweri subsp. lanceolata Lowell Ahart 1984-5-28 4652 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  UC2035806  Monardella odoratissima subsp. glauca H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  CAS-BOT-BC215537  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC220452  Monardella sheltonii Lewis S. Rose 1951-6-26 51019 Butte Jarboe [Jarbo] Pass, 22 mi. n. of Oroville 579 Comment
  CHSC97320  Monardella sheltonii L. P. Janeway 2007-6-26 9075 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CAS-BOT-BC220254  Monardella sheltonii Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CHSC54877  Monochoria vaginalis Vernon H. Oswald; Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  CDA2668  Monochoria vaginalis T. C. Fuller, J. R. Keck Jr. 1976-10-4 20166 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs 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
  CHSC50333  Montia chamissoi Vernon Oswald 1990-5-17 4218 Butte Meadow near the headwaters of Concow Creek, on the west side of Concow Rd. ca. 0.5 mile south-southwest of Flea Valley. Common in a marshy area along the creek at the foot of the meadow. 1097 Comment
  CHSC62367  Montia fontana subsp. amporitana B. Castro 1990-3-31 417 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House, in SW-facing lava-lined minor streambed with flat to gentle slope at head of Nugen Cyn. 280 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  CHSC70768  Montia linearis Vernon Oswald 1998-3-11 8888 Butte Northern Sacramento Valley, Wurlitzer Unit, Vina Plains Preserve. Uncommon along the north fence line just east of gate on Haille Rd. 57 Comment
  CHSC70812  Montia linearis B. Castro 1995-5-18 571 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow, in very moist soil just downslope from spring. 1109 Comment
  CHSC104007  Morus alba Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16743 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CHSC109628  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC260541  Muhlenbergia filiformis Clarence R. Quick 1963-7-16 63 54 b Butte Section Corner Meadow, E of Pulga, Feather River Canyon 1463 Comment
  CDA32543  Muhlenbergia filiformis L. Ahart, Vernon H. Oswald 1999-10-3 8284 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC59049  Muhlenbergia filiformis Lowell Ahart 1992-7-21 6798 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  SEINET10827782  Muhlenbergia filiformis Edwin B. Copel 1929-7-16 Copeland 339 Butte Jonesville. In open wet ground; the first grass to appear in such places. 1550 Comment
  CHSC51292  Muhlenbergia mexicana Lowell Ahart 1990-9-30 6610 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge acoss Lake Oroville. 243 Comment
  CHSC49561  Muhlenbergia minutissima Vernon Oswald 1987-8-10 3198 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  UCD86781  Muhlenbergia minutissima E. B. Copeland 1929-7-29 85 Butte Lily Pond. Comment
  CHSC44477  Myosotis discolor Lowell Ahart 1988-5-1 5975 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC392248  Myosurus John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UCD150363  Myriophyllum verticillatum Harry George 1967-8-30 s.n. Butte Nelson Road West. Comment
  SEINET3890285  Najas graminea Herbert L. Mason, Verne E. Grant 1946-8-15 13047 Butte Near caretaker's house, Greylodge Game Refuge.; 0 Comment
  CAS-BOT-BC60371  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CAS-BOT-BC60372  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC35114  Navarretia capillaris R. A. Schlising 1980-7-16 3912 Butte N part of county NE of Butte Meadows and SW of Jonesville; meadow and streamside of Butte Creek near Cherry Hill Campground. Comment
  CHSC45040  Navarretia capillaris Lowell Ahart 1988-9-4 6183 Butte On the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  SEINET12279150  Navarretia cotulifolia Unknown 1936-1 13045 Butte near Chico Comment
  CHSC34985  Navarretia divaricata R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3765 Butte 1.6 mi N of La Porte Road (and 1.8 mi S of S end of Sly Creek Reservoir dam). Roadside. Comment
  CHSC111149  Navarretia filicaulis Lowell Ahart 2012-6-9 18180 Butte On the north side of Guardian Trail, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  SEINET179620  Navarretia filicaulis H. F. Copeland 1932-6-24 unknown Butte Near Hog Springs, about 5 miles north of Chico Comment
  CHSC38600  Navarretia heterandra Vernon Oswald 1983-5-22 531 Butte Upper Bidwell Park, Chico, along the n side of Horseshoe Lake. 100 Comment
  JEPS104465  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  CHSC116720  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC36432  Navarretia leucocephala D. H. Ikeda 1980-5-10 355 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  HSC38283  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1976-5-9 2453 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  UC1719863  Navarretia nigelliformis David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC36711  Navarretia pubescens D. H. Ikeda 1980-5-10 356 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  CHSC36706  Navarretia tagetina D. H. Ikeda 1980-5-8 347 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. Comment
  CHSC60973  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10461183  Nemacladus interior Howell 1959-9-26 Howell 35086 Butte Cuesta Power House; North fork of the Feather River 427 Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  CHSC31689  Nemophila heterophylla L. Ahart 1975-3-23 715 Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 45 Comment
  SEINET12326949  Nemophila heterophylla R. A. Emmrich 1975-1 54 Butte ca 0.5 mi E of Butte Creek and 0.25 mi SE of Covered Bridge, 6 mi ESE of Chico 107 Comment
  UCD120060  Nemophila heterophylla M. Vincent 1964-4-8 504 Butte Hwy. 40. 1 mile northeast of new bridge. Comment
  POM65386  Nemophila menziesii var. menziesii Winifred Paine 1902-3-29 s.n. Butte Chico. Comment
  POM73813  Nemophila menziesii var. menziesii C. C. Bruce 1897-03 2036 Butte [No location information on label.] Comment
  CHSC50329  Nemophila spatulata Vernon Oswald 1990-6-4 4284 Butte Logging road just south of Humbug Summit and Cold Springs, ca. 0.25 mile northwest of Humbug Rd, on a branch of Willow Creek. 1950 Comment
  CHSC42969  Nicotiana acuminata var. multiflora Lowell Ahart 1987-7-3 5754 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  CHSC26845  Nymphaea odorata M. S. Taylor 1978-6-23 1635 Butte Irrifation ditch, ca. 5 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CHSC115294  Odontostomum hartwegii Lowell Ahart 2015-4-27 20087 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET12265276  Odontostomum hartwegii J. H. Morris 1932-1 s.n. Butte Durham Comment
  JEPS120001  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC500247  Orobanche uniflora subsp. occidentalis Lowell Ahart 1965-4-11 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC61330  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte Small bog about 1/8 mile south-west of the Snow Mine, about 2-1/2 miles east of Bald Mountain, about 6-1/2 miles north-east of Stirling City. 1463 Comment
  SEINET12270162  Orthocarpus erianthus L. A. Bunnell s.n. Butte no further locality Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 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
  SEINET10549698  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-6 Taylor 2458 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  SEINET10964398  Orthocarpus lithospermoides Mary Susan Taylor 1978-5-6 Taylor 1620 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  CHSC104808  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 455 Comment
  CHSC60946  Osmorhiza chilensis Lowell Ahart 1993-7-6 7059 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10454524  Osmorhiza chilensis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5119 Butte About 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, abut 9 miles northeast of Feather Falls. Comment
  CHSC27254  Oxalis corniculata P. Moyer 1972-3-4 100 Butte CSUC campus. On lawn at 1st and Hazel. 60 Comment
  CHSC20516  Oxalis rubra M. S. Taylor 1975-6-25 808 Butte In lawns, 1456 Arcadian, Chico. 60 Comment
  CAS-BOT-BC316889  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1963-6-2 63067 Butte north fork of the Feather River, 2 mi south of Pulga 579 Comment
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CAS-BOT-BC253698  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CDA34554  Panicum dichotomiflorum L. Ahart 2008-11-4 15404 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  SEINET7040266  Parvisedum pentandrum A. G. Vestal 1963-5-9 s.n. Butte Ca 14.2 miles southeast of Chico. Nelson Quadrangle UTM Zone 10, 598465mE, 4375546mM. Comment
  UC830990  Parvisedum pumilum A. A. Heller 1914-4-27 11329 Butte along Chico-Oroville Road on the lava plains 6 mi from Chico; Chico-Oroville Road Comment
  SEINET10449693  Parvisedum pumilum Mary Susan Taylor 1984-4-8 Taylor 5414 Butte T20N R4E ne sec 11. North Table Mt, 8 mi N of Oroville. 1225 ft. 373 Comment
  UC1037265  Paspalum distichum E. Wilson 1934-9-3 70 Butte Biggs Rice Station Comment
  SEINET10453507  Paxistima myrsinites Mary Susan Taylor 1981-5-29 Taylor 3811 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC71198  Pellaea andromedifolia M. S. Taylor 1979-3-20 1957 Butte along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville 304 Comment
  SEINET10920583 Image available Pellaea andromedifolia Lowell Ahart 2007-5-29 Ahart 13941 Butte Near the SE edge of Bald Rock Dome, on the W side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 mi by the trail from the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 637 Comment
  CHSC11794  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  SEINET10867065  Pellaea mucronata Mary Susan Taylor 1979-3-19 Taylor 1935 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  SEINET194311  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 miles o\\from Oroville on the Feather River Highway in Arid Transition Zone. Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt Comment
  JEPS108825  Penstemon azureus var. azureus Lowell Ahart 2006-5-10 12618 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  RSA780097  Penstemon breviflorus subsp. glabrisepalus C. C. Bruce 1898-06 2414 Butte [No location information provided.] Comment
  CHSC42774  Penstemon gracilentus L. P. Janeway 1987-7-5 2443 Butte 0.4 mi east on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  JEPS93937  Penstemon laetus var. leptosepalus Vernon H. Oswald and Lowell Ahart 1998-8-11 9473 Butte Four Trees-Coyote Gap Road 0.1 mi w of Four Trees; Four Trees-Coyote Gap Road 1578 Comment
  NY604510  Penstemon laetus var. leptosepalus A. A. Heller 1914-7-24 11589 Butte Forest Ranch 731.5 Comment
  CHSC27990  Penstemon neotericus M. S. Taylor 1978-7-18 1690 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and hwy 32. 1326 Comment
  NY627285  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte Little Summit near Butte Meadows Comment
  NY627283  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca. 16 km north of Forest Ranch, along east margin of Highway 32, ca. 15 m south of jct of Highway 32 and Butte Meadows Road. Butte Meadows Quadrangle, 15'. 1170 Comment
  CHSC23143  Pentagramma pallida M. S. Taylor 1975-10-31 984 Butte Ca. 10 ft n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico. 152 Comment
  UC1506779  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte ca. 3.5 mi ne of Honcut (ca. 1/4 mi s of Cox Lane, e of pole line tower) 100 Comment
  HSC66081  Pentagramma triangularis M. S. Taylor 1980-4-16 2483 Butte Lake Oroville State Recreation Area, 0.5 mi. SE of Parish Camp, just S of Lime Saddle Memorial Park 5 mi. S of Paradise 305 Comment
  CHSC42504  Pentagramma triangularis subsp. semipallida Lowell Ahart 1987-5-12 5637 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 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
  CHSC90138  Pentagramma triangularis subsp. triangularis Jack Judkins 1983-4-16 9 Butte 6 mi east-southeast of Chico, 100 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  JEPS104146  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  SEINET3166411  Pentagramma triangularis subsp. triangularis P. J. Alexander 2009-5-27 1049 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  CHSC40221  Perideridia bacigalupii Vernon Oswald; L. Ahart 1985-7-28 1916 Butte Robinson Mill Rd. 2.6 mi ne of Upham Rd. 640 Comment
  UC1609371  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CDA14087  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13971 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC26610  Persicaria amphibia M. P. Hayes 1977-9-24 118 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). In ditch along edge of road. 30 Comment
  CDA42946  Persicaria hydropiper L. Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC116330  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 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
  CHSC48663  Persicaria lapathifolia Vernon Oswald 1987-8-10 3202 Butte Snag lake located 2.5 mi (air) se of Jonesville. Scattered plants in moist soil on the east side of the reservoir near the normal high-water line. 1726 Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC419318  Persicaria punctata Lowell Ahart 1987-5-27 5716 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS119941  Persicaria punctata Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC33711  Phacelia corymbosa J. D. Jokerst 1981-5-21 1327 Butte Pulga Rd., ca 1/10 mi NE of its junction with Hwy 70. Comment
  CHSC4595  Phacelia egena C. Glascock 1965-4-10 305 Butte 2.5 mi. s on Clark Rd. from its intersection with Pearson Rd., Paradise. Comment
  UC1047038  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 344 Butte along Feather River Hwy about 16 mi ne Oroville Comment
  UC1564802  Phacelia heterophylla subsp. virgata V. Oswald and L. Ahart 1989-7-12 3842 Butte logging road (T-line) 0.6 air mi nnw Bald Mtn Lookout (ne of Stirling City) 1560 Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  CHSC39108  Phacelia mutabilis R. A. Schlising 1983-8-27 4450 Butte N part of county at Coon Hollow nw of Philbrook Reservoir. 1615 Comment
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  CHSC48476  Phacelia tanacetifolia Vernon Oswald 1985-4-15 1710 Butte Upper Bidwell Park, Chico, on the north rim ca. 1 mi e of the power lines. 320 Comment
  POM116441  Phalaris caroliniana C. C. Bruce 1898-05 2376 Butte [No locality information provided] 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
  CHSC61545  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte Rice field, east of the Cherokee Canal and north of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  POM207754  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  POM356936  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte 7 limes W. of Honcut 23 Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 Comment
  CDA25504  Philadelphus lewisii subsp. californicus J. R. Keck Jr. 1978-5-23 PDR# 330032 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC28564  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi w of Lake Madrone. 997 Comment
  SEINET7042407  Phlox speciosa subsp. occidentalis A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC48608  Phoradendron densum Vernon Oswald 1982-11-14 16 Butte Coutolenc Rd. 300 ft n of its junction with the Skyway at Magalia. 707 Comment
  CAS-BOT-BC135127  Phoradendron juniperinum Saichi Kawahara 1968-5-5 395 Butte Innskip 1463 Comment
  CAS-BOT-BC135130  Phoradendron juniperinum Clarence R. Quick 1962-8-19 62 -82 Butte Coyote Gap-Four Trees Road. Plumas National Forest 1463 Comment
  RSA133203  Phoradendron macrophyllum Del Wiens 1960-6-15 2729 Butte Several miles S of Oroville, on Hwy 40 alternate. 122 Comment
  CAS-BOT-BC141243  Phoradendron serotinum subsp. tomentosum Forman T. McLean 1921-10-20 31 Butte Chico Comment
  CHSC117423  Physalis lancifolia Lowell Ahart 2016-5-30 20891 Butte North of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CAS-BOT-BC140564  Physocarpus capitatus S. Bianco 1995-10-28 S. 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  SEINET10474325  Picris echioides Mary Susan Taylor 1977-10-10 Taylor 1525 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  HSC66078  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte E of Chico, NE corner of jct. of Notre Dam Blvd. and the Skyway, 1/8 mi. E of Hwy. 99 69 Comment
  SEINET10866941  Pinus jeffreyi Mary Susan Taylor 1978-7-18 Taylor 1706 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  SEINET10866943  Pinus lambertiana Mary Susan Taylor 1975-9-12 Taylor 913 A Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  UC398881  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville 2000 Comment
  CHSC4460  Pinus ponderosa C. Glascock 1965-2-6 220 Butte Ca. 15 yds uphill from road. From Hwy. 70 turnoff on road 24N23 and turn E at its dead end-total dist. From Hwy=1.1 mi. Comment
  UC813301  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  CHSC88246  Piperia transversa Lowell Ahart 2004-7-11 11246 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
  CHSC68710  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Below the cement of the low water crossing, Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC43585  Pistacia atlantica Vernon Oswald 1987-5-6 2373 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 68 Comment
  CHSC102375  Pistacia vera L. P. Janeway 2009-10-13 9950 Butte Upper Bidwell Park, Chico; south side of Big Chico Creek, along South Rim Trail/Annie Bidwell Trail 155 m east-northeast of its start at the east end of Centennial Ave. and Chico Canyon Road. 87 Comment
  SEINET10529838  Pityrogramma triangularis Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3468 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  SEINET10899935  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-3-20 Taylor 1958 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
  POM287609  Plagiobothrys Lyman Benson 1935-3-27 6356 Butte U.S. 99E, Gridley. 30 Comment
  UC480682  Plagiobothrys austiniae H. F. Copeland 1928-4-3 1113 Butte foothills of Butte Co. Comment
  UC78216  Plagiobothrys bracteatus Mrs. R. M. Austin Apr. 1896 Butte Comment
  CHSC90103  Plagiobothrys fulvus M. A. Carlson 1991-4-12 17 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  UC180154  Plagiobothrys fulvus A. A. Heller 1913-4-7 10726 Butte hills 6 mi n Oroville Comment
  CHSC31252  Plagiobothrys glyptocarpus R. A. Schlising 1980-5-18 3591 Butte NE of Chico Airport and WSW of Richardson Springs at vernal pool on Cohasset Ridge. 249 Comment
  CHSC40762  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 4886 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  HSC85971  Plagiobothrys glyptocarpus J. Hunter 1986-3-5 22 Butte Ca. 1 km E Chico, 50 m S Hwy. 32 75 Comment
  RSA325178  Plagiobothrys glyptocarpus M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5408 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  HSC100802  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte Bottom of small drainage, 100 yd. W of the fence, 0.5 mi. S of improved parking area and the Cherokee Rd., North Table Mountain, 5.5 (air) mi. NE of Oroville 399 Comment
  CHSC116716  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 2016-5-24 20857 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS103363  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS105995  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  UCD80171  Plagiobothrys greenei CNPS SN Foothill Team 2005-4-14 SNFN 0033 b Butte Plot located at private Rock Ranch, in the horse pasture, near the NE corner of the pasture located west of the barn and house, ~10 m from corner of pasture fence. 105 Comment
  CAS-BOT-BC228249  Plagiobothrys hispidulus V. Oswald; L. Ahart 1988-7-13 3584 Butte Road to High Lakes E of Philbrook Reservoir, on the N side of Philbrook Creek S of the road 1828 Comment
  SEINET10497551  Plagiobothrys leptocladus Mary Susan Taylor 1982-4-28 Taylor 4349 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS117199  Plagiobothrys nothofulvus Lowell Ahart 2010-5-14 16672 Butte About 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico Comment
  POM71480  Plagiobothrys nothofulvus C. C. Bruce 1897-03 1927 Butte Foothill plains. Comment
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC39029  Plagiobothrys scriptus Lowell Ahart 1983-4-10 3918 Butte Central part of county, north-east of highway 99 and Pentz Road about 1 mile. 65 Comment
  SEINET516433  Plagiobothrys scriptus Lowell Ahart 1977-1 1275 Butte Normal size plant, growing on damp to dry gravelly red soil along the edge of small swales, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC46769  Plagiobothrys shastensis Lowell Ahart 1980-4-7 2071 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  CHSC103723  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16652 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  JEPS107340  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-4-2 11682 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
  JEPS117192  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS123826  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-4-24 20063 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SD116549  Plagiobothrys stipitatus var. micranthus B. Ertter, Jeff Strachan 1980-5-5 3264 Butte Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville, pasture of annual grasses and herbs north of house. 29 Comment
  HSC32646  Plagiobothrys tenellus David Johnson 1974-4-20 61 Butte Table Mtn. Comment
  CHSC90948  Planodes virginica Lowell Ahart 2005-4-14 11712 Butte Bottom of a deep drain ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC42070  Plantago coronopus Kevin Lund 1986-4-15 16 Butte Ca. 13 mi n of Chico on Hwy. 99. Comment
  CHSC71260  Plantago coronopus Lowell Ahart 1998-7-1 8030 Butte West of a small wash, 20 yards south of a east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC12640  Plantago erecta M. S. Taylor 1974-4-20 183 Butte Richardson Springs, ca. 6 mi n of Chico, ca. 10 yds off side of road. Comment
  UC1506095  Plantago erecta Robert T. Clausen 1963-3-20 63009 Butte s of Chico (low ridge e of Mutual Ditch, Sacramento River drainiage); Sacramento Valley, Sacramento River 57 Comment
  SEINET10836899  Plantago hookeriana var. californica Mary Susan Taylor 1975-4-25 Taylor 500 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC65171  Plantago major Lowell Ahart 1995-8-19 7610 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  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
  SEINET10938438  Platanthera Mary Susan Taylor 1980-4-18 Taylor 2500 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte Comment
  CAS-BOT-BC93160  Platanus racemosa John Thomas Howell 1975-6-15 51067 Butte Butte Creek near Chico. 60 Comment
  CHSC115485  Plectritis congesta subsp. brachystemon L. P. Janeway; Emily Meigs Doe 2015-4-21 11666 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UC128821  Pleuricospora fimbriolata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC99319  Poa annua Lowell Ahart 2008-5-21 14775 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CAS-BOT-BC255683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  CDA14181  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. rhizomatous perennial in a +- moist, low area near creek. Shaded. Comment
  RSA755425  Poa palustris L. Ahart 2009-6-3 15815 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 air mile southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  CAS-BOT-BC255972  Poa pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  CDA19116  Poa pratensis H. D. Riley 2001-5-2 PDR 1170767 Butte Sacramento Valley; In residential lawn, on 1419 Muir Ave., Chico. 0 Comment
  SACT001941  Poa pratensis Herbert Copeland 1929-5-10 Butte In damp open places 1500.0 Comment
  CHSC94346  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC236365  Poa secunda subsp. secunda Lowell Ahart 1985-5-15 4996 Butte 1/8 mile E of the dirt road, about 1.5 miles NE of Concow Res. 800 Comment
  CHSC103982  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16675 Butte On the south side of the Guardian Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 301 Comment
  CHSC54370  Poa secunda subsp. secunda M. Bailey 1991-3-9 550 Butte Butte College campus, in the vicinity of the intersection of Clark and Pentz Roads. 85 Comment
  CHSC92660  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  SEINET10887957  Poa tenerrima Lowell Ahart 2010-5-14 Ahart 16662 Butte T22N, R2E, northeast 1/4 Section 10. Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  UCD125402  Pogogyne douglasii E. M. Johnston 1915-1 W- 1475 Butte Biggs. Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  CHSC14009  Pogogyne zizyphoroides G. Notch 1974-4-16 156 Butte 500 yds e of Cherokee Rd. ca 5.5 mi sw of Cherokee. 373 Comment
  NY406770  Polygala cornuta A. A. Heller 1914-7-24 11624 Butte Forest Ranch 731.5 Comment
  JEPS104287  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  JEPS118036  Polygonum arenastrum Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CHSC20497  Polygonum aviculare M. S. Taylor 1975-5-24 770 Butte Abundant weed in lawns, 1456 Arcadian, Chico. 60 Comment
  CHSC46585  Polygonum aviculare subsp. aviculare V. Oswald; L. Ahart 1989-7-21 3870 Butte Junction of Willow and Colby Creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. Common on an open alluvial flat on the w side of Colby Creek. 1487 Comment
  CAS-BOT-BC109129  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CAS-BOT-BC109140  Polygonum bidwelliae Lowell Ahart 1984-5-7 4593 Butte About 0.5 mile north and a little east of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC74694  Polygonum bidwelliae B. Castro 1998-6-13 790 E Butte Ca 5.5 air mi SE of Town of Paradise, directly opposite County Landfill, at edge of N side of unnamed canyon just S of Neal Road, under transmission lines. 128 Comment
  CHSC88076  Polygonum bidwelliae R. D. Fischer 2004-6-12 161 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on ridge above Humboldt Trail and just w. of Hwy 32. 399 Comment
  CAS-BOT-BC414370  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  CHSC61003  Polygonum douglasii subsp. douglasii Lowell Ahart 1993-6-20 6984 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile northwest of the Lost Creek Reservoir Dam. 1158 Comment
  UC478528  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  CDA2788  Polygonum hydropiper L. Ahart, Vernon Oswald 1999-10-3 8293 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET13711408  Polygonum lapathifolium Lowell William Ahart, Lowell William Ahart 1999-1 8174 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC61004  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC600497  Polygonum polygaloides subsp. kelloggii H. F. Copeland 1930-7-28 Butte by Humbug Road (edge of pool); Jonesville 1828 Comment
  UC1563289  Polygonum punctatum Lowell Ahart 1990-10-3 6620 Butte about 1/4 mi ne Canyon Creek Bridge across lake; Lake Oroville, East Fork of Canyon Creek 259 Comment
  CHSC44134  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally common in loose, gravelly soil on a scree slope somewhat below the n edge of the ridge. 2097 Comment
  SBBG29156  Polygonum spergulariiforme E. B. Copeland 1931-7-3 Butte Colby Cyn, Jonesville 1550 Comment
  CAS-BOT-BC71864  Polypodium californicum Lowell Ahart 1980-3-26 2056 Butte Along Swedes Flat Road, near Bangor, about 1 mile east of the Bangor-Oroville Highway Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC38241  Polypodium calirhiza Vernon Oswald 1982-7-3 21 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC41900  Polypodium calirhiza Lowell Ahart 1975-4-1 729 Butte About 50 yards south of the water trough, about 1 1/2 miles north-east of the Enterprise Bridge across Lake Oroville. 335 Comment
  CHSC90206  Polypodium calirhiza Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico. 406 Comment
  JEPS113227  Polypodium calirhiza Lowell Ahart 2007-5-16 13892 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel.1 480 Comment
  RSA726480  Polypodium calirhiza L. Ahart 2007-5-16 13892 Butte About 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 481 Comment
  CAS-BOT-BC233061  Polypogon interruptus John Thomas Howell 1951-8-19 s.n. Butte Near Pulga Comment
  CHSC30550  Polypogon interruptus J. D. Jokerst; M. S. Taylor 1980-9-11 635 Butte Adjacent to rice fields, 50 ft N of Goodspeed-Watt Rd, 0.2 mi N of its jct with Nelson Rd (ca 6 mi S of Chico). Comment
  CHSC45744  Polypogon interruptus S. A. Conley 1986-6-16 41 Butte On n. bank of Western Canal, at jct. with the Midway, 0.8 mi. s of Nelson. 35 Comment
  CHSC61549  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET11665627  Polypogon interruptus Unknown 1983-1 4110 Butte ca 0.12 mi E of int of Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville along Ponderosa 500 Comment
  CAS-BOT-BC233208  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte 7 miles SW of Feather Falls. Ca. 1 mile S of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CAS-BOT-BC233210  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, ca. 2.5 miles E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 miles NE of Oroville 600 Comment
  CHSC90805  Polypogon maritimus Lowell Ahart 2005-5-2 11777 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC232572  Polypogon monspeliensis Lowell Ahart 1977-6-2 1524 Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC46667  Polystichum californicum Vernon H. Oswald 1989-7-12 3932 Butte Wurlitzer Unit, Vina Plains Preseve. On south side of Pine Creek between the bridge on Cana-Pine Creek Rd and the mouth of Singer Creek. 54 Comment
  UC123289  Polystichum californicum Mrs. R. M. Austin May 1883 80 Butte Little Chico Canyon Comment
  CHSC27952  Polystichum imbricans M. S. Taylor 1979-3-20 1941 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC39300  Polystichum imbricans Lowell Ahart 1983-7-24 4213 Butte At the Forbestown Res., about 5 miles north-east of Forbestown. 450 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
  SEINET10834136  Polystichum imbricans Mary Susan Taylor 1980-10-6 Taylor 3355 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
  JEPS116121  Polystichum imbricans subsp. curtum Lowell Ahart 2009-6-30 15971 Butte Around large boulders 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
  SEINET259926 Image available Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 Butte 18 mi NE of Oroville. Macabes Cr. Canyon ca. 100 ft. E. of Lumpkin Rd. 396 Comment
  CAS-BOT-BC72300  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-7-24 4213 Butte on the road cutbank at the Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CDA42713  Polystichum imbricans subsp. imbricans L. Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  CDA42715  Polystichum imbricans subsp. imbricans L. Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Beg Bend Road. Comment
  UC123295  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin May, 1896 198 Butte Forest Ranch Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10965417  Populus fremontii Mary Susan Taylor 1974-10-11 Taylor 326 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC51864  Porterella carnosula L. P. Janeway; R. A. Schlising 1988-7-16 3034 Butte Vernal pool next to Humbug Summit Rd ca 0.8 mi W of Butte Creek House. 1805 Comment
  CAS-BOT-BC452107  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC46305  Potamogeton diversifolius Vernon Oswald 1989-5-30 3788 Butte Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. In both ditch and the lake. 54 Comment
  CHSC33656  Potamogeton natans R. Schlising; J. Fuller, M. Merryman, K. Tarp 1981-7-28 4175 Butte N of Inskip in NE part of county; Coon Hollow; in pond. 1752 Comment
  SEINET11664887  Potamogeton natans L. P. Janeway 1987-1 2166 Butte along French Creek across from mouth of Ram Creek 617 Comment
  CHSC88252  Potamogeton nodosus Lowell Ahart 2004-7-11 11227 Butte 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
  POM313007  Potamogeton nodosus H. L. Mason 1947-7-10 12640 Butte Sanford Slough, Butte Sink, southwest corner of Butte county. Comment
  CDA26064  Potentilla anglica J. Harroun 1966-5-3 Butte 324 Frances Willard, Chico. 0 Comment
  CHSC61700  Potentilla glandulosa Cathy Young 1988-4-23 11 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway, and 15 yds w of Butte Creek. 67 Comment
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10902805  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1975-6-25 Taylor 801 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  POM70065  Prunella vulgaris var. lanceolata C. C. Bruce 1897-06 1975 Butte Iron Canyon. Comment
  CAS-BOT-BC159926  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  JEPS122208  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC66287  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28388  Pseudognaphalium thermale J. D. Jokerst 1979-10-13 387 Butte Jordan Hill Rd., 2.4 mi. N. of Concow Cr. 609 Comment
  CHSC28534  Pseudognaphalium thermale M. S. Taylor 1979-10-5 2233 Butte Paradise Lake, se side, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC6051  Psidium guajava M. MacArthur 1968-6-22 276 Butte NE EP bld., ca. 30 ft., Chico State College. 60 Comment
  CHSC43628  Psilocarphus brevissimus var. brevissimus Vernon Oswald 1987-6-23 3031 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CAS-BOT-BC361827  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28147  Psilocarphus oregonus Robert A. Schlising; Ellen Sanders 1979-4-29 3378 Butte Richvale vernal pools, 1/4 mi n of jct Hwy 99 and Hwy 162 to Oroville; across from Thermalito Afterbay. Only in pools close to Hwy 99. Comment
  CHSC113508  Psilocarphus tenellus Lowell Ahart 2014-7-10 19625 -A. Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC60962  Psilocarphus tenellus var. tenellus Lowell Ahart 1993-7-6 7049 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  UC600605  Pyrola asarifolia E. B. Copeland Jul 1929 Butte Jonesville 487 Comment
  CHSC51871  Pyrola picta L. P. Janeway 1987-6-26 2299 Butte At Rag Dump. 1173 Comment
  UC600606  Pyrola picta E. B. Copeland 1929-7-1 Butte Jonesville Comment
  CHSC8566  Quercus M. MacArthur 1968-6-13 365 Butte NW of EP Building, Chico State College campus. 60 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
  JEPS119980  Quercus chrysolepis Lowell Ahart 2012-4-30 17930 Butte On the south side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  CAS-BOT-BC86633  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte Hills two miles N of Oroville Comment
  CAS-BOT-BC86118  Quercus dumosa H. F. Copeland 1939-8-8 1575 Butte Humboldt Road 12 miles E of Chico Comment
  SEINET13953409 Image available Quercus garryana A. A. Heller 1915-1 11816 Butte Stony ridges and uplands in red clay near Cohasset, where it is the principal chaparral shrub near the upper limit of the dirger pine belt. Comment
  CAS-BOT-BC62794  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  UC1135635  Quercus garryana var. breweri C. G. Albertus 1933-7-14 43 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  CAS-BOT-BC105141  Quercus kelloggii Lowell Ahart 1980-9-10 2625 Butte Little Bald Rock 1100 Comment
  CHSC20501  Quercus kelloggii M. S. Taylor 1975-6-30 826 Butte Abundant along Cohasset Hwy, ca. 1 mi s of Cohasset, ca. 17 mi ne of Chico. 853 Comment
  JEPS113184  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  SEINET10477266  Quercus kelloggii Mary Susan Taylor 1980-5-27 Taylor 2657 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
  UC848109  Quercus lobata A. A. Heller 1915-4-1 11791 Butte near Durham; Sacramento Valley 68 Comment
  CHSC27951  Quercus wislizeni M. S. Taylor 1979-3-20 1937 Butte Ca. 1 mi n of jct of north fork Feather River, along an old road, ca. 10 mi n of Oroville. 304 Comment
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  CHSC96644  Quercus wislizeni var. wislizeni Lowell Ahart 2007-3-28 13597 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 73 Comment
  UCD170495  Quercus wislizeni var. wislizeni D. O. Burge 2017-3-18 2229 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC84471  Ranunculus aquatilis var. aquatilis Vernon Oswald 1983-4-9 315 Butte Upper Bidwell Park, Chico, 50 ft n of Upper Park Rd. in the ditch draining Horseshoe Lake. 91 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  CHSC76958  Ranunculus canus Margie Collins 1894-5-1 Butte Chico. Comment
  UCD95793  Ranunculus canus Perry Allen 1961-3-9 s.n. Butte Vicinity of La Grange. 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
  CHSC45403  Ranunculus hebecarpus Lowell Ahart 1974-4-11 386 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CHSC29047  Ranunculus muricatus R. A. Schlising 1980-4-14 3566 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. In ditch at s end of area. Comment
  CHSC85422  Ranunculus muricatus John Dittes 1992-5-5 474 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  SEINET10535982  Ranunculus occidentalis var. eisenii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4155 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi e of its jct with East Fork Canyon Creek, ca. 15 mi ne of Oroville. Foothill Woodland; 600 Comment
  SEINET194909  Ranunculus occidentalis var. eisenii A. A. Heller 1919-5-18 13181 Butte Mosquito Creek between Appleton and Coutolenc 610 Comment
  RSA268750  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CAS-BOT-BC59890  Rhamnus ilicifolia John Thomas Howell 1961-9-22 36783 Butte Pulga Bridge, Feather River Highway. Comment
  UCD111896  Rhamnus ilicifolia Collector Unknown 1925-5-17 1786 Butte Marysville. Comment
  SEINET10870352  Rhamnus ilicifolia Mary Susan Taylor 1979-10-12 Taylor 2241 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC100418  Rhododendron occidentale L. P. Janeway; Heather Koeth 2008-11-17 9610 Butte Northern High Sierra Nevada. On the flats on the southwest side of Fall River at Nelsons Crossing (across from the mouth of Kenebeck Creek). 43 Comment
  POM86098  Rhus trilobata var. pilosissima C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  CHSC44063  Rhynchospora californica L. P. Janeway 1988-6-14 2761 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC44064  Rhynchospora californica L. P. Janeway 1988-5-30 2717 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 1/2 mi NE of the power lines. 152 Comment
  UC600615  Ribes inerme var. inerme H. F. Copeland 1930-7-25 Butte Jonesville, meadow below cabin Jonesville Comment
  CHSC1659  Ribes nevadense L. Stone 1930-3-10 Butte Big Chico Creek Canyon near Forest Ranch. 548 Comment
  SBBG126087  Ribes roezlii L. Ahart 2012-2-22 17753 Butte S side of Ten Mi House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 387 Comment
  UC600616  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  CAS-BOT-BC198964  Ribes roezlii var. roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  JEPS117533  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 376 Comment
  LA205438  Ribes viscosissimum A. A. Heller; 1915-6-26 10232 Butte Sierra Nevada, summit above Jonesvillle 2133 Comment
  CAS-BOT-BC74461  Rorippa curvisiliqua Lowell Ahart 1985-4-21 4878 Butte Along the sides of Wyandotte Creek south of Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CAS-BOT-BC74469  Rorippa curvisiliqua H. F. Copeland 1920-7-11 59 Butte Scotch John Meadow. 1828 Comment
  SEINET13711417  Rorippa curvisiliqua Lowell William Ahart, Lowell William Ahart 1999-1 8155 Butte 12 Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CAS-BOT-BC74462  Rorippa curvisiliqua Lowell Ahart 1985-5-31 5040 Butte Lake Oroville, about 0.5 mile SW of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, NE end of Oroville 274 Comment
  CHSC98956  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 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
  CHSC103661  Rorippa palustris var. occidentalis Lowell Ahart 2010-4-7 16575 Butte On the sides of a deep ditch, south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Princeton Highway, about 1 1/4 mile northwest of Biggs. 31 Comment
  SEINET3450729  Rosa bridgesii Unknown 2003-7-12 10373 Butte Oroville, Oroville, about 15 air miles northeast, Both sides of Bald Rock Road, about 3 miles south of the Brush Creek Work Center 1010 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 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
  JEPS94699  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 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
  CHSC60850  Rosa pisocarpa subsp. ahartii Vernon H. Oswald; Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  JEPS127065  Rosa pisocarpa subsp. ahartii Lowell Ahart 2016-5-15 20834 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC176377  Rosa pisocarpa subsp. ahartii A. A. Heller 1913-6-7 10801 Butte near Stirling 1074 Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  CDA5117  Rotala indica L. Ahart 2000-10-15 8707 Butte Strand 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. Comment
  CHSC43233  Rotala ramosior Lowell Ahart 1987-9-4 5879 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 mile seast of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC147095  Rubus John Thomas Howell 1959-9-20 34684 Butte Eastern outskirts of Oroville 60 Comment
  SEINET10970325  Rubus glaucifolius Mary Susan Taylor 1981-4-28 Taylor 3570 Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC1600  Rubus parviflorus 1941-7-12 Butte Kimshew Falls, near Rag Dump 5, above Stirling. Comment
  UCR66527  Rubus parviflorus H. F. Copeland 1930-8-26 1328 Butte Jonesville, in woods above hotel 1677 Comment
  CAS-BOT-BC158769  Rubus ursinus Lowell Ahart 1987-5-9 5590 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
  JEPS119753  Rubus ursinus Lowell Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC38063  Rumex acetosella R. E. Preston 1982-6-23 308 B Butte In meadow at edge of stream; Deadwood Creek at Dixie Valley Road. 999 Comment
  SEINET10479372  Rumex acetosella Mary Susan Taylor 1978-7-21 Taylor 1806 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CDA34628  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte On west side and bottom of a steep bank, 10 yards west of the dredger piles along North Honcut Creek, about 2.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC102999  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards 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. 232 Comment
  SEINET10904511  Rumex conglomeratus Mary Susan Taylor 1975-6-22 Taylor 788 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC421733  Rumex conglomeratus Lowell Ahart 1982-6-27 3653 Butte About 2 1/4 miles north and 1/4 mile east of Honcut, Peter Ahart Ranch 50 Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  JEPS127063  Rumex crispus Lowell Ahart 2016-5-14 20827 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC421620  Rumex crispus Lowell Ahart 1981-5-16 2810 Butte Gray Lodge, 11 miles southwest of Gridley. Duck ponds on Gray Lodge Waterfowl Management Area. 35 Comment
  CAS-BOT-BC433476  Rumex dentatus Lowell Ahart 1981-5-16 2804 Butte Gray Lodge, 11 miles southwest of Gridley. Gray Lodge Waterfowl Management Area. 35 Comment
  CHSC45386  Rumex salicifolius Vernon Oswald 1987-6-18 3004 Butte Butte Creek Reserve on the s side of the creek, n of the Skyway, near the dam for Crouch Ditch. 80 Comment
  UCD101612  Rumex salicifolius A. A. Heller 1914-5-13 11396 Butte Between Durham and Nelson. Comment
  CHSC113340  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CAS-BOT-BC445725  Sagittaria latifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC37376  Sagittaria montevidensis subsp. calycina R. A. Schlising 1981-8-16 4193 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 9, along latter and across from Thermalito Afterbay. Comment
  CHSC45314  Sagittaria sanfordii Vernon Oswald 1988-10-25 3713 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  UC935720  Sagittaria sanfordii Herbert L. Mason and Verne Grant 1946-9-4 13112 Butte road between Gridley and Princeton Comment
  UCD138071  Sagittaria sanfordii Herbert L. Mason; Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington Highway. Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  RSA30394  Salix exigua Unspecified 11397 Butte Near Butte creek on the road between Durham and Nelson. Comment
  CAS-BOT-BC104073  Salix hindsiana Lowell Ahart 1987-5-6 5538 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10539216  Salix hindsiana Lowell Ahart 1984-6-8 Ahart 4676 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CAS-BOT-BC129486  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  CDA42945  Salsola tragus L. Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  CHSC88963  Salvia sonomensis Christine Hantelman 2000-4-3 60 Butte Cohasset Ridge. Under power lines. 350 Comment
  UC567181  Salvia sonomensis A. E. Wieslander and J. E. Sowder 1933-6-24 326 Butte Keefer Ridge; Chico Quad. 304 Comment
  UCR190831  Salvia sonomensis 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
  UC478466  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville 1550 Comment
  CHSC11051  Samolus parviflorus Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 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
  CHSC45960  Samolus parviflorus Lowell Ahart 1984-7-25 4762 Butte Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Along the wet edges of North Honcut Creek. 42 Comment
  CHSC39236  Sanicula bipinnata M. S. Taylor; K. Tharp 1983-3-12 5234 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC108811  Sanicula bipinnatifida Lowell Ahart 2012-4-9 17826 Butte About 20 yards southeast of Big Chico Creek, on the northwest side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC87546  Sanicula bipinnatifida R. D. Fischer 2004-3-5 69 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 300 ft south of Pine Trail junction. 399 Comment
  CHSC85626  Sanicula bipinnatifida var. flava Frances Kimball 1965-5-2 2667 Butte Cherokee Rd., 9.9 mi. E of California Rt. 70, between Oroville and Quincy; top of Table Mt.; gully, left bank. Comment
  CHSC42094  Sanicula graveolens Lowell Ahart 1986-7-2 5345 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  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
  POM219371  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Near Jones Creek Comment
  CHSC27974  Sarcodes sanguinea M. S. Taylor 1978-7-19 1756 Butte On W side of Upper Scotts John Road, ca 2 mi N of its junction with Scotts John Road, ca 4 mi E of Jonesville. 1889 Comment
  CHSC43961  Satureja douglasii V. Oswald; B. Castro, D. Perske 1988-5-28 3345 Butte Douglas Perske's property located at the end of Bull Creek Rd. e of Cohasset Rd., ca. 1 mi nne of Cohasset School. 890 Comment
  CAS-BOT-BC436856  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC1564797  Saxifraga bryophora V. Oswald and L. Ahart 1989-7-12 3849 Butte 3 air mi se of Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  UC1594731  Saxifraga bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  SEINET10483045  Saxifraga nidifica Lowell Ahart 1983-2-21 Ahart 3902 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 35 m. 35 Comment
  UC591531  Saxifraga oregana H. F. Copeland 1935-6-25 Butte Jonesville 1500 Comment
  CHSC29015  Scandix pecten-veneris M. S. Taylor; J. D. Jokerst 1980-4-4 2461 Butte On w side of La Porte Rd, ca. 2 mi n of Bangor. 335 Comment
  JEPS115833  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC97341  Scirpus microcarpus L. P. Janeway 2007-8-6 9150 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Dense clumps of this plant occasionally on rotting logs in the now waterless (seasonal dry down), but still soggy, upper part of the pond. 776 Comment
  CHSC19637  Scribneria bolanderi J. Wheeler 1968-4-19 326 Butte W side of Cherokee Rd. ca. 0.75 mi s of Oregon City Rd., Table Mountain. 548 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
  JEPS117411  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 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
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  SEINET10593738  Secale cereale Isle 1969-5-20 ISLE 487 Butte N. Of the Lindo channel at the edge of the S. side of Manzanita Ave. just across (S. of ) the Manzanita Ave.-Lakeview Way intersection, chico, california. Comment
  POM142368  Sedella pumila A. A. Heller, H. E. Brown 1902-5-7 5486 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  HSC23383  Sedella pumila Larry D. Scott 1971-4-7 4 Butte 4 mi. NE of Chico, 20 yds. N of Skyway Comment
  SEINET10449683  Sedum albomarginatum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3418 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC110142  Sedum spathulifolium L. P. Janeway 2012-4-29 10809 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; South Rim Trail 0.3 km east of the trailhead at east end of Centennial Ave. 92 Comment
  CHSC90027  Sedum spathulifolium Ross Rowland 2001-4-2 31 Butte On edge of cliff at end of Billie Trail, about 50 yards below park bench, in Billie Park, Paradise. 617180mE/4403680mN/zone 10N. 487 Comment
  CAS-BOT-BC62120  Selaginella hansenii John Thomas Howell; Gordon H. True 1967-5-9 42232 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  HSC81460  Selaginella hansenii M. Mesler, Karen Lu 1984-3-24 Butte Road between Chico and Paradise Comment
  SEINET10470982  Selaginella hansenii Collins, 1978-4-21 Collins 14 Butte 6 miles n of Oroville, 1 mile w of Cherokee Rd. 1000 feet. 305 Comment
  CAS-BOT-BC69727  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte County Line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC100794  Selaginella wallacei Lowell Ahart; John Dittes, Steve Green 2009-1-17 15473 Butte Large rock on the south side of Guardian Rock Trail, about 20 yards west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 321 Comment
  JEPS120174  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC363284  Senecio aronicoides F. N. Bassett June 16. s.n. Butte Jonesville Comment
  CHSC89845  Senecio eurycephalus var. eurycephalus L. P. Janeway; B. Castro 2004-6-13 8135 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  CHSC86441  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 93 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  CHSC96618  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  UCR237318  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-4-14 18732 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CAS-BOT-BC364550  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  SEINET10507606  Setaria glauca Lowell Ahart 1990-10-21 Ahart 6638 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). T21N R4E NW/S5. 213 Comment
  JEPS97334  Setaria parviflora Lowell Ahart 1995-8-19 7615 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  CAS-BOT-BC240119  Setaria pumila J. D. Jokerst; M. S. Taylor 1979-10-13 381 Butte Intersection of Jordan Hill Rd and Concow, ca. 0.8 mi w of Concow Rd, ca. 2 mi ne of Lake Concow Comment
  JEPS76248  Setaria pumila W. L. Jepson 1939-8-17 19456 Butte Reather R. bottom near Oroville; Reather R. 45 Comment
  RSA724995  Setaria viridis L. Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC92545  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS115247  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS103541  Sibara virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the N side of Gridley Road, ca 5 miles W of Gridley. 21 Comment
  CHSC24942  Sidalcea asprella E. Rilla 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC24146  Sidalcea calycosa B. Bunge 1976-4-12 9 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway, Chico. 67 Comment
  CHSC44071  Sidalcea calycosa John E. Hunter 1986-3-5 18 Butte Ca. 1 km e of Chico, 50 m s of Hwy. 32. 75 Comment
  SEINET10937539  Sidalcea calycosa Mary Susan Taylor 1975-10-4 Taylor 956 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC116734  Sidalcea diploscypha Lowell Ahart 2016-5-24 20845 Butte 50 yards north of the ditch, about 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Grassy area in Foothill Woodland. 50 Comment
  POM84398  Sidalcea diploscypha C. C. Bruce 1897-05 1921 Butte Chico. Comment
  CHSC33518  Sidalcea gigantea R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4140 Butte NE part of county, E of Fork of Feather River and NE of Coyote Gap. On Four Trees Road. 1447 Comment
  CHSC90104  Sidalcea hartwegii M. A. Carlson 1991-4-12 18 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  UCD14891  Sidalcea hartwegii Petra Heuer 1991-4-27 1006 Butte California, Butte Co.; 1 km south of Peredise 365 Comment
  CHSC88953  Sidalcea hirsuta Christine Hantelman 2000-4-27 81 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  JEPS107752  Sidalcea hirsuta Lowell Ahart 2005-5-11 11792 Butte In deeper vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  RSA31842  Sidalcea robusta A. A. Heller 1941-5-9 s.n. Butte Clark Road about a mile above the site of the old Clear Creek Post Office. Comment
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May 22 2007
  RSA88031  Sidalcea robusta C. L. Hitchcock 1952-5-28 19535 Butte Along Paradise-Durham Road about 5 miles south of Paradise Comment
  CHSC50664  Silene antirrhina Lowell Ahart 1990-5-25 6478 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. 259 Comment
  CAS-BOT-BC384469  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Along Ponderosa Way 500 Comment
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CHSC37434  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte E. of Inskip and near Jones Meadow. 1734 Comment
  UC1609334  Silene bernardina Lowell Ahart 1993-7-29 7113 Butte about 2 mi e Bald Mountain (about 6 air mi ne of Stirling City); e of Bald Mountain, ne of Stirling City 1524 Comment
  SEINET5337145  Silene californica M. J. Williams, W. Roderick 1984-5-25 84- 21 -4 Butte 3.3 miles from Paradise on Honey Run Road. 168 Comment
  CAS-BOT-BC385885  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte along trail to Humboldt Peak, at Humboldt Summit 2133 Comment
  CHSC217  Silene gallica P. Delaplane 1965-4-6 43 Butte Ca. 3/4 mi. above turnoff to Richardson Springs Rd. on Cohasset Rd. 243 Comment
  CHSC11073  Silene laciniata subsp. californica Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  CHSC24879  Silene laciniata subsp. californica P. Laherty 1976-4-4 6 Butte On n side of Ponderosa Way, ca. 10 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  SBBG16971  Silene laciniata subsp. californica M. Vincent 1962-4-16 198 Butte Pentz Rd, small reservoir 0.25 mi off rd, 5 mi S of Paradise Comment
  RSA4211  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville. 1550 Comment
  SEINET7073605  Silene noctiflora A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road about 8 miles east of Chico. UTM Zone 10, 613369mE, 4399651mN. Coordinate datum: NAD27. Comment
  SD1633  Silene occidentalis E. B. Copeland 1930-7-28 Butte Jonesville 1500 Comment
  SEINET3070885 Image available Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1550 Comment
  RSA769596  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC46234  Sisyrinchium bellum Pauleen Broyles 1987-7-5 1072 Butte Ca 7 km n. of Inskip on Bull Hill Rd., along Coon Creek. Comment
  CHSC96802  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS121916  Sisyrinchium bellum Lowell Ahart 2014-7-10 19619 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SBBG119799  Sisyrinchium bellum L. Ahart 2006-7-16 12998 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE 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
  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
  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
  CHSC93797  Solanum parishii Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CAS-BOT-BC157641  Solanum umbelliferum E. B. Copeland 1930-7-27 453 Butte Jonesville 1600 Comment
  SEINET10474350  Solidago californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4148 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  SEINET10474358  Solidago occidentalis Mary Susan Taylor 1975-10-3 Taylor 926 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CAS-BOT-BC364937  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte Roadsides and fields near Durham Comment
  CHSC31610  Solidago velutina subsp. californica L. Ahart 1978-8-30 1800 Butte On banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC65489  Solidago velutina subsp. californica L. P. Janeway 1995-9-10 4924 Butte Watson Ridge about 1 mi east of its western end. On top of ridge, overlooking Fall River. 1097 Comment
  CHSC43637  Soliva sessilis Vernon Oswald 1985-4-28 1725 Butte Upper Bidwell Park, Chico, at Parking Area P (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC115178  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte Gravel bar on the south side of the dry stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC6086  Sonchus oleraceus B. Wilson 1968-4-17 153 Butte NE of Greenhouse, CSC campus. 59 Comment
  CHSC63240  Sonchus oleraceus Lowell Ahart 1994-3-30 7280 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  JEPS115664  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET10483618  Sorbus scopulina var. cascadensis Lowell Ahart 1983-8-16 Ahart 4300 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC235259  Sorghum bicolor John Thomas Howell 1951-8-19 28152 Butte North Fork Feather River 243 Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  SEINET10594682  Sorghum halepense Prouty 1980-1 PROUTY 80 .97 Butte Along Cherokee Rd., ca. 0.8 mi n of jctn. with Thompson Flat Rd. Comment
  CHSC101749  Spartium junceum Lowell Ahart 2009-5-23 15743 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  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
  CHSC40788  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville, Table Mountain. 411 Comment
  JEPS114724  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CAS-BOT-BC390597  Spergularia rubra John Thomas Howell 1962-6-16 37585 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC94015  Sphenosciadium capitellatum R. Fischer 2005-9-5 661 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  UC426923  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville 1500 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC1610  Spiraea douglasii R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  SEINET3163884  Spraguea umbellata K. Conger 1907-1 sn Butte Brush Creek Comment
  CHSC42939  Stachys pycnantha Lowell Ahart 1987-7-17 5826 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UCD80405  Stachys rigida CNPS SN Foothill Team 2005-5-25 SNFN 0170 b Butte City of Chico, about 300 m south of northern boundary of Upper Bidwell Park, on the east side of Big Chico Creek. 278 Comment
  CHSC52334  Stebbinsoseris heterocarpa J. D. Jokerst 1985-4-14 2233 Butte Top of North Table Mt, N of Cherokee Rd., near E edge of mesa. 396 Comment
  CAS-BOT-BC175314  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  SEINET10537600  Stellaria crispa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4741 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
  CAS-BOT-BC391087  Stellaria longipes subsp. longipes H. F. Copeland 1920-7-8 31 Butte Jonesville 1219 Comment
  JEPS115186  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
  CHSC44489  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS113238  Stellaria pallida Lowell Ahart 2007-3-12 13591 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  CHSC50989  Stephanomeria elata Lowell Ahart 1990-8-15 6592 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  RSA0118747  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  SEINET10827386  Stipa lettermanii Edwin B. Copel 1929-7-16 Copeland 342 Butte Jonesville; bunch forming, on light soil in open brush, moist in spring. 1550 Comment
  SJSU8320  Streptanthus diversifolius J. B. Willis Jr. 1969-5-3 94 Butte near Cherokee Rd, 8 mi NE of Oroville Comment
  CHSC31143  Streptanthus longisiliquus M. S. Taylor 1980-7-6 3074 Butte On s side of Old Humboldt Rd, slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC93454  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  SEINET11994741  Streptanthus polygaloides Unknown 1985-1 4975 Butte W of Lunt Rd, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CAS-BOT-BC87516  Streptanthus tortuosus John Thomas Howell 1978-4-17 52840 Butte Sierra Nevada. Table Mountain. 381 Comment
  CHSC37699  Streptanthus tortuosus M. S. Taylor 1981-5-13 3702 Butte Granite knoll, above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 0.5 mi w of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  CHSC38054  Streptanthus tortuosus R. E. Preston 1983-5-26 384 Butte Roadside, Hwy 70 ca. 1 3/4 mi SW of Pulga. 548 Comment
  CHSC93177  Streptanthus tortuosus var. orbiculatus L. P. Janeway 1994-6-6 4656 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top and road cutbank. 1158 Comment
  CHSC80521  Streptanthus tortuosus var. suffrutescens Vernon H. Oswald 2001-4-8 9995 Butte Old roadbed paralleling Oroville-Quincy Hwy just north of Bidwell Bar Bridge. 292 Comment
  CHSC49444  Styrax officinalis var. redivivus Vernon Oswald 1984-5-23 1203 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  UC774460  Swertia albicaulis var. nitida Carl B. Wolf 1941-7-23 Butte 7 mi w De Sable (on rd to Forest Ranch); Northern Sierra Nevada 762 Comment
  UC961210  Swertia albicaulis var. nitida Marion Ownbey and Gerald B. Ownbey 1946-6-25 2944 Butte Comment
  SD4985  Symphoricarpos acutus E. B. Copeland 1930-7-7 Butte Jonesville. 1600 Comment
  CAS-BOT-BC234613  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  CHSC40316  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock. 1066 Comment
  LA204590  Symphoricarpos mollis E. B. Copeland; 1930-7-7 479 Butte Jonesville 1600.0 Comment
  UC1119963  Symphoricarpos mollis P. L. Johannsen 1936-7-29 972 Butte 1 mi n junction of Butte Creek and Secret Creek; Paynes Creek Quad. 1280 Comment
  UC600717  Symphyotrichum bracteolatum H. F. Copeland 1927-9-2 Butte Jonesville Comment
  CAS-BOT-BC99037  Symphyotrichum cusickii Lowell Ahart 1981-9-18 3179 Butte Sierra Nevada - Arch Rock Tunnel, Hwy. 70 550 Comment
  UC725487  Symphyotrichum subulatum A. A. Heller 1923-10-13 13828 Butte near Richvale Comment
  CHSC116324  Symphyotrichum subulatum var. elongatum Lowell Ahart 2015-10-20 20572 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
  JEPS124323  Symphyotrichum subulatum var. elongatum Lowell Ahart 2015-10-20 20572 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET11688675  Taeniatherum caput-medusae T. B. Devine 1980-1 608 Butte beside Horseshoe Lake in Bidwell Park, Chico Comment
  JEPS120944  Tamarix parviflora Lowell Ahart 2013-4-20 18547 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC34237  Taraxacum officinale M. S. Taylor 1981-4-28 3568 F Butte Four Trees Rd near creeks, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC19951  Tauschia hartwegii M. S. Taylor 1975-3-3 404 Butte Ca. 1/4 mi n of Richardson Springs camp, ca. 8 mi n of Chico. 91 Comment
  CHSC38750  Tauschia hartwegii Vernon Oswald 1983-3-6 126 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  UC1246758  Tauschia hartwegii Howard Scott Gentry and Steven Koch 1962-6-19 19767 Butte along road from Chico 6-7 mi from Cohasset 609 Comment
  UCD21572  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  UC1134373  Taxus brevifolia P. L. Johannsen 1936-8-12 981 Butte 0.75 mi nw of junc of Chico and Campbell Cr.; Paynes Creek Quad. 640 Comment
  CHSC48910  Tellima grandiflora Vernon Oswald 1984-4-9 1132 Butte Feather Falls Trail, 2.1 trail mi. from the trail head at the end of Bryant Ravine Rd. 457 Comment
  CHSC52371  Tellima grandiflora L. P. Janeway 1989-5-17 3253 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. Shady cyn with creek flowing n'ly to S Fk Feather River. 792 Comment
  SEINET10937208  Tellima grandiflora Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5510 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC8565  Tetrapanax papyriferus M. MacArthur 1968-6-16 338 Butte E end of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  POM196105  Thalictrum occidentale E. B. Copeland 1929-7-22 361 Butte Jonesville. 1500 Comment
  CAS-BOT-BC399765  Thalictrum polycarpum Lowell Ahart 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CAS-BOT-BC197408  Thinopyrum intermedium subsp. intermedium Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  UCD93340  Thinopyrum ponticum John Thomas Howell 1961-9-22 36785 Butte Sierra Nevada. Pulga Bridge, Feather River Hwy. Comment
  CAS-BOT-BC88225  Thysanocarpus curvipes John Thomas Howell 1976-4-1 51534 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  CHSC33706  Thysanocarpus curvipes L. Ahart 1981-3-29 2709 Butte Along edge of Ponderosa Way, ca 1.5 mi n of Ponderosa Dam near Forbestown. 500 Comment
  CHSC35014  Thysanocarpus curvipes R. E. Preston 1982-3-20 189 Butte Feather River canyon, n side of Hwy 70, ca. 18 mi n of Oroville. 646 Comment