Search Results — 2000 specimen records retrieved (1610 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
  CHSC3157  Abelia chinensis Gary Dutton 1966-5-9 278 Butte Found on C.S.C. north-east side of Science Bld. Comment
  CAS-BOT-BC77977  Abies concolor Saichi Kawahara 1968-5-5 396 Butte Innskip 1463 Comment
  CHSC20727  Abies concolor M. S. Taylor 1975-8-31 901 Butte Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC3266  Acer buergerianum M. L. Hillier 1966-2-4 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  SBBG50798  Acer macrophyllum J. Watjen 1969-5-4 36 Butte confluence of Rock Crk and N Fork Feather River 457 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  CHSC6015  Acer rubrum M. MacArthur 1968-6-19 260 Butte ca. 50 ft. SW of Esplanade bridge, on NW edge of Big Chico Creek, Chico State College, Butte Co. 60 Comment
  CHSC3356  Acer truncatum Robert L. Smith 1966-4-6 57 Butte U. S. Plant Introduction Station 5 miles SE of Chico, Calif. Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  CHSC250  Achillea millefolium M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC46330  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC6754  Achnatherum lemmonii Marilyn Lee 1968-5-3 160 Butte South side of Coutolenc Rd., ca 1 mile N. of Magalia. Comment
  JEPS116096  Achnatherum lemmonii Lowell Ahart 2009-5-15 15686 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
  SEINET10663560  Achnatherum occidentale Lowell Ahart, Vernon H. Oswald 1999-7-26 Ahart 8123 Butte T18N, R12E, southwest 1/4 Section 34. On a ridge about 75 yards west of Grouse Ridge Road (Road 14) and about 1/2 mile southwest of the Lookout, about 5.5 miles northeast of Bowman Lake Road (Road 18), about 4.5 miels (air) south of Bowman Lake. 2134 Comment
  CAS-BOT-BC216461  Achnatherum occidentale subsp. californicum Javier Penalosa 1962-6-18 2467 Butte Near confluence of French and Peavine Creeks 640 Comment
  CAS-BOT-BC29944  Achyrachaena mollis Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC28007  Acmispon americanus var. americanus M. S. Taylor 1978-7-21 1795 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC113919  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Orovolle, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of OrovIlle. Collected about 1/4 mile west of point above, according to label. 259 Comment
  CHSC49839  Acmispon brachycarpus Vernon H. Oswald 1990-4-2 4140 Butte East side of Feather River in Oroville, Montgomery St access. Near the river directly w of Montgomery St. 42 Comment
  CHSC94087  Acmispon brachycarpus R. Fischer 2005-4-2 678 Butte Chico. Collected from Bidwell Park, south end of Disk Golf Course, near the ridge top trail leading to the lower Guardian Trail. 365 Comment
  CHSC39540  Acmispon nevadensis Lowell Ahart 1983-5-28 4016 Butte Along a trail to Feather Falls, about 1/2 mile south of the falls, about 5 miles north of the town of Feather Falls. 600 Comment
  CHSC50549  Acmispon nevadensis var. nevadensis Vernon Oswald; Lowell Ahart 1990-7-5 4349 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC52113  Aconogonon phytolaccifolium L. P. Janeway 1988-7-29 3105 Butte Above bank of Butte Cr at Butte Meadows, crossing of Bull Hill Rd (The Skyway). 1325 Comment
  CHSC32723  Adiantum jordanii M. S. Taylor 1981-4-8 3500 Butte At the end of Dark Canyon Rd around the turnout near the restroom, up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC38243  Adiantum jordanii Vernon Oswald 1983-3-31 246 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 97 Comment
  CHSC4216  Adiantum jordanii R. Carter 1966-3-13 300 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  CDA34629  Agoseris grandiflora L. Ahart 2009-6-19 15918 Butte On the north side of Ten Mile House Road, 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. Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CHSC38318  Agoseris grandiflora Vernon Oswald 1983-6-13 668 Butte Upper Bidwell Park, Chico, beside the road between Centennial Ave. and the Police Pistol Range. 91 Comment
  CHSC36538  Agoseris heterophylla Lowell Ahart 1982-6-4 3542 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC37259  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC8144  Agoseris heterophylla J. G. Moore 1969-4-13 76 Butte Pentz Rd., 200 yds. E of Hwy. 99, on S side of road. 60 Comment
  UC57397  Agoseris heterophylla var. heterophylla H. E. Brown Apr 15 1897-Apr 30 1897 300 Butte near Clear Creek 53 Comment
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  JEPS124331  Agrostis avenacea Lowell Ahart 2015-10-20 20564 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC69711  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte Back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville. 51 Comment
  CHSC41912  Agrostis elliottiana Lowell Ahart 1983-6-26 4166 Butte Near Bean Creek Road, about 1/4 mile south of Little Bald Rock, about 20 miles north-east of Oroville. 1000 Comment
  CHSC71206  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte On the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 Comment
  CAS-BOT-BC139435  Agrostis hyemalis H. S. Yates 1936-8-13 6109 Butte 2.5 miles south southeast of Butte Meadows. 1493 Comment
  JEPS121947  Agrostis idahoensis Lowell Ahart 2014-7-7 19587 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  RSA591515  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 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
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  JEPS110399  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  RSA724882  Agrostis scabra L. Ahart 2006-8-15 13186 Butte 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows 1570 Comment
  JEPS93859  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC1586513  Agrostis thurberiana Vernon H. Oswald and Lowell Ahart 1991-8-19 4836 Butte n side Forest Rd. 25N15 (between Philbrook Reservoir and Coon Hollow) 1767 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CHSC78714  Ailanthus altissima L. P. Janeway; B. Castro 2000-5-9 6713 Butte Sacramento Valley. South side of Chico; backyard of house on south side of 19th Street between Park Avenue and Salem Street. 60 Comment
  CAS-BOT-BC138423  Aira caryophyllea Lowell Ahart 1980-5-17 2270 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC31162  Aira caryophyllea M. S. Taylor 1980-3-1 2351 Butte SE facing cliff looking into Hamlin Canyon, ca. 1/2 mi e of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CAS-BOT-BC138343  Aira caryophyllea var. caryophyllea Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC115424  Albizia julibrissin Kate Ronan 2013-5-18 Butte City of Chico, corner of W. 1st Ave. and Citrus. 58 Comment
  CHSC21380  Albizia julibrissin M. S. Taylor 1975-6-22 780 Butte On center w side of 1200 block of Arcadian, Chico. Comment
  SEINET10483795  Alchemilla occidentalis Lowell Ahart 1983-5-7 Ahart 3968 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CDA38802  Alisma triviale L. Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC34032  Alisma triviale L. Ahart 1981-7-7 2926 Butte Along the edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  SEINET7072746  Allium amplectens A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles northeast of Oroville on Route 10 [Mountain Boulevard]. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 619496mE, 4380367mN. Coordinate datum: NAD 27.) Comment
  HSC38141  Allium amplectens Thomas W. Nelson, Jane P. Nelson 1976-5-9 2446 Butte Intersection of Palermo Rd. and SR 70, 4 mi. S of Oroville Comment
  RSA489568  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CHSC46417  Allium campanulatum Lowell Ahart 1989-5-29 6319 Butte Just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  UC600453  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville 1524 Comment
  CAS-BOT-BC465440  Allium campanulatum E. B. Copeland 1937-5-30 s.n. Butte Jonesville Comment
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  SEINET12047242  Allium cratericola Unknown 1978-1 2 Butte 15 m W of Cherokee Rd., 4.8 km S of Cherokee on Cherokee Rd Comment
  CDA13909  Allium jepsonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada; Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CDA13302  Allium membranaceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13150 Butte Plumas National Forest; Above USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC37129  Allium membranaceum R. A. Schlising 1980-6-17 3742 Butte Paradise Lake, n of Magalia; ne corner of lake. 731 Comment
  SEINET12050260  Allium peninsulare Unknown 1985-1 5003 Butte 1/8 mi E of the dirt road, about 1.5 mi NE of Concow of Reservoir 732 Comment
  CHSC54115  Allium peninsulare var. peninsulare Vernon H. Oswald; Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC42482  Allium platycaule Lowell Ahart 1987-5-22 5675 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC474065  Allium platycaule A. A. Heller 1915-6-16 12024 Butte Summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC132114  Allium sanbornii var. sanbornii Mrs. C. C. Bruce 1897-5-1 1900 Butte Little [Chico-creek] Chico Creek Comment
  CHSC49479  Allium sanbornii var. sanbornii Vernon Oswald 1987-7-29 3157 Butte Humboldt Rd. 0.6 mi e of Lomo. 1219 Comment
  CAS-BOT-BC476715  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CHSC40002  Allophyllum integrifolium Lowell Ahart 1983-8-16 4298 Butte On the high banks of a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC20717  Alnus incana subsp. tenuifolia M. S. Taylor 1975-8-31 886 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC176143  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte e Chico (bottoms along creek); Big Chico Creek Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  SEINET10478495  Alnus tenuifolia Mary Susan Taylor 1975-8-31 Taylor 886 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  JEPS122206  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UCD55881  Alopecurus carolinianus L. Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC86000  Alopecurus saccatus John E. Hunter 1986-3-30 41 Butte Ca. 1 km E Chico, 50 m S Hwy. 32. 75 Comment
  JEPS124159  Amaranthus albus Lowell Ahart 2015-11-7 20615 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  UC1562412  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte about 2 1/2 mi NE of East Gridley ( along the edges of Palm Avenue, about 1/12 [sic] mile E of Larkin Road) 30 Comment
  CHSC34155  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  CDA34620  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. Comment
  JEPS115265  Ambrosia psilostachya Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  UCD128817  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  SEINET10971204  Ambrosia psilostachya var. californica Mary Susan Taylor 1977-8-19 Taylor 1505 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CAS-BOT-BC142948  Amelanchier utahensis H. F. Copeland 1920-8-29 159 Butte Jonesville Woods 1219 Comment
  SEINET10906932  Ammannia auriculata Mary Susan Taylor 1978-9-8 Taylor 1889 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CDA36704  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC51268  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte Growing 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. 228 Comment
  RSA718049  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  HSC96968  Ammannia robusta L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  UC1609427  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch Comment
  UCD102896  Ammannia robusta H. L. Mason; Verne Grant 1945-7-10 12633 Butte Butte Sink. Butt Creek, N of Marysville Buttes, Grey Lodge Game Refuge, southern. Comment
  UCD169393  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte North of Spruce Street, Gridley; east of the railroad tracks. 28 Comment
  SEINET10497093  Amsinckia intermedia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5227 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  UCD119626  Amsinckia intermedia R. R. Kehlor 1951-4-14 29 Butte Sierra Nevada, 6.25 miles E of Oroville - Mt. Ida Road. 48 Comment
  UC726393  Amsinckia lycopsoides A. A. Heller 1941-4-19 16069 Butte hills w of Willows Comment
  UC1111640  Amsinckia menziesii var. menziesii Francia Chisaki 1956-4-19 683 Butte 1.5 mi s of West Branch of Feather River (on Nelson Bar Road) Comment
  CHSC62554  Anagallis arvensis L. P. Janeway 1993-5-2 4341 Butte Foothill woodland adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 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
  CHSC28609  Andropogon glomeratus var. scabriglumis M. S. Taylor 1977-11-12 1532 Butte N side of Diversion Dam area, n side of Upper Bidwell Park Rd. Comment
  CHSC45871  Anethum graveolens Lowell Ahart 1979-9-8 2020 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC37120  Angelica breweri L. Ahart 1982-9-13 3804 Butte Along edge of a dirt rd a little n of Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  CHSC107264  Anisocarpus madioides L. P. Janeway 2011-6-27 10403 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 830 m east-northeast of the top. 732 Comment
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  UC455477  Apocynum androsaemifolium Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CHSC32153  Apocynum cannabinum L. Ahart 1976-5-27 1133 Butte La Porte Rd, ca. 100 yds above its jct with Robinson Mill Rd, ca. 2 mi sw of Rackerby. 609 Comment
  CAS-BOT-BC392111  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  CHSC45020  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-21 220 Butte N part of county, near Philbrook Resevoir. 1706 Comment
  CHSC52679  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 300 Butte E part of county near Mt. House. 1085 Comment
  CHSC52684  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 337 Butte 0.2 mi from jct of Bull Hill Rd. with Humboldt Rd. on Bull Hill Rd., near Butte Meadows. 1325 Comment
  POM219015  Arabis oligantha E. B. Copeland 1931-6-19 643 Butte [No further location information.] 1550 Comment
  CHSC23403  Arbutus menziesii M. S. Taylor 1976-3-6 1007 Butte Ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 miles E of Oroville. Comment
  RSA755754  Arbutus menziesii L. Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  UC1950043  Arbutus unedo Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15490 Butte Near the east side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC26688  Arceuthobium abietinum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1486 Butte At Humboldt Summit at Butte-Tehama county line, ca. 100 ft. w of Old Humboldt Rd, on Butte side. 2133 Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA632988  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27468 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  CAS-BOT-BC38828  Arctostaphylos manzanita subsp. manzanita Frances Brown 1935-2-11 s.n. Butte Durham Comment
  CHSC30353  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1979-2-12 1130 Butte Table Mt. Abundant at the W edge of North Table Mt. N of Cherokee Rd. Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  JEPS115159  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, 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 369 Comment
  CAS-BOT-BC38529  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51110 Butte Paradise. Skyway just ne. of Billie Rd. 609 Comment
  CHSC41235  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2145 Butte Backbone of first ridge east of Camp Creek in the canyon of the North Fork Feather River. Comment
  SEINET11986401  Arctostaphylos nevadensis Unknown 1977-1 1 Butte ca 2 mi S of Butte Creek House, 40 mi N of Paradise & 15 mi NE of Butte Meadows 1768 Comment
  SEINET10449339  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3430 A Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CAS-BOT-BC47379  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51101 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC31693  Arctostaphylos viscida subsp. viscida L. Ahart 1976-2-15 1009 Butte Ahart Ranch. Along North Honcut Creek on dry rocky soil. Peter Ahart Ranch, Honcut. 53 Comment
  JEPS119508  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  RSA134788  Arctostaphylos viscida subsp. viscida P. C. Everett, E. K. Balls, George B. Everett 1959-10-20 23908 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  CHSC97416  Aristida oligantha Robert Fischer 2006-6-27 1020 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  POM206950  Aristida oligantha E. B. Copeland 1903-7-27 3488 Butte Chico. Butte Creek. Comment
  POM165725  Aristolochia californica E. B. Copeland 1903-4-10 s.n. Butte Chico Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 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
  CAS-BOT-BC146272  Arrhenatherum elatius var. elatius Lowell Ahart 1981-8-15 3050 Butte Sierra Nevada. Bottom of a small wash near the dirt road, ca. 200 m west of the store at the east end of Philbrook Res. 1500 Comment
  CHSC38322  Artemisia douglasiana Vernon H. Oswald 1983-8-19 1006 Butte Upper Bidwell Park, Chico, near the E end of Yahi Trail. 207 Comment
  RSA794971  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  SFV11162  Asarum hartwegii M. L. Vincent 1963-6-7 384 A Butte Paradise Dam, 4 miles north of Paradise. 760 Comment
  CHSC117  Asclepias cordifolia M. Harless 1930-5-18 Butte Paradise. 548 Comment
  CHSC4695  Asclepias cordifolia R. Carter 1966-4-26 370 Butte Found ca. 7 mi. E of Oroville at intersection of Olive Hwy. and Wyandotte-LaPorte Rd. 243 Comment
  JEPS115624  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  UC392183  Asclepias cordifolia E. B. Copeland 1929-7-13 Butte Jonesville 1600 Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC20541  Asclepias eriocarpa M. S. Taylor 1975-6-30 810 Butte Fields on e side of Cohasset Rd, ca. 2 mi n of Chico. 60 Comment
  RSA0104727  Asclepias eriocarpa Lowell A. Ahart 2009-6-18 15915 Butte On the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC102164  Asclepias speciosa Lowell Ahart 2009-6-19 15944 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  CHSC64265  Aspidotis densa H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 870 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. 1010 Comment
  SEINET10529848  Aspidotis densa Heidi H. Schmidt 1993-6-15 Schmidt 870 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  POM219381  Aster alpigenus H. F. Copeland 1931-4-11 1534 Butte Butte Creek Meadows 1829 Comment
  SEINET10473624  Aster exilis Mary Susan Taylor 1977-10-10 Taylor 1526 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
  CHSC95084  Asyneuma prenanthoides L. P. Janeway 2006-6-25 8703 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CAS-BOT-BC68687  Athyrium filix-femina var. californicum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC34533  Athysanus pusillus R. E. Preston 1982-2-18 171 Butte At base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. Comment
  CAS-BOT-BC146025  Avena barbata John Thomas Howell 1962-6-15 37531 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC146181  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC111715  Avena barbata Lowell Ahart 2012-6-2 18134 Butte Along the sides of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC9339  Avena sativa B. Anthony 1968-5-17 523 Butte Corner of Pentz Road and Dry Creek Road, Pentz. Comment
  CHSC8761  Azolla filiculoides S. Chulasmai 1966-3-25 2 Butte Highway 99 E (3 miles south of Chico) Dradger pond. Comment
  CHSC103016  Azolla microphylla Lowell Ahart 2009-10-8 16412 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC108318  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CHSC117705  Azolla microphylla Lowell Ahart 2016-9-4 21342 Butte Rice field. Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC3527  Balsamorhiza deltoidea John Francis 1966-4-30 144 Butte 3.4 miles E of Forest Ranch on Hwy 32. Comment
  CHSC57219  Balsamorhiza deltoidea Vernon H. Oswald; Lowell Ahart 1992-3-24 4891 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.2 mi north of Burma Rd. 76 Comment
  CAS-BOT-BC16376  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC36682  Barbarea orthoceras R. E. Preston 1982-7-16 341 Butte Near stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  CHSC48314  Barbarea orthoceras Vernon Oswald 1984-5-9 1180 Butte Near Camp Lassen, Chico Meadows on Scout Rd ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 Comment
  CHSC21365  Berberis aquifolium M. S. Taylor 1975-4-8 454 Butte N side of Chemistry Bldg, California State University, Chico. 60 Comment
  SEINET3449099  Bergia texana Unknown 2002-12-6 10021 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 20 Comment
  HSC93350  Bergia texana L. Ahart 1995-7-15 7594 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC40911  Bidens frondosa Lowell Ahart 1985-11-7 5238 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
  NY31001  Blennosperma californicum R. M. Austin s.n. Butte Mesa, near Little Chico Creek Comment
  CHSC285  Blennosperma nanum J. Turner 1930-4-18 Butte Chico near Plant Gardens. 54 Comment
  POM29973  Blennosperma nanum C. C. Bruce 1897-01 2074 Butte Foothills Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  JEPS104354  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CAS-BOT-BC16036  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 0259 Butte 100 meters southeast of Little Chico Creek. 243 Comment
  CAS-BOT-BC31373  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte Gray Lodge Game Refuge, NW of Pennington. Comment
  CAS-BOT-BC145682  Brachypodium distachyon John Thomas Howell 1962-6-16 37622 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC104858  Brachypodium distachyon Lowell Ahart 2010-6-20 16814 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcutt Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  SEINET10448435  Brassica geniculata Mary Susan Taylor 1975-10-29 Taylor 974 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
  CHSC34594  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CHSC52485  Briza maxima R. L. Ondricek 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CAS-BOT-BC145542  Briza minor Lowell Ahart 1970-4-16 s.n. Butte Peter Ahart Ranch, Honcut. 45 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
  SEINET10896164  Brodiaea A. Arthur Heller 1914-4-13 Heller 11285 Butte Chico-Oroville road 11 miles from Chico. Comment
  POM215689  Brodiaea californica var. californica David D. Keck 1933-5-30 2410 Butte 1 mile W of Richardson Springs. Comment
  CHSC49484  Brodiaea coronaria Vernon Oswald 1986-5-12 2003 Butte Goodspeed-Watt Rd. 2.6 mi n of Hwy 162. 30 Comment
  UCD77145  Brodiaea coronaria Robert E. Preston 2003-5-11 2134 Butte Chico, Upper Bidwell Park, ca. 0.2 mi NE of jct Wildwood Ave. and Upper Park Rd 83 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
  SEINET10932597  Brodiaea coronaria Mrs. R. M. Austin Austin 27 A Butte Iron Canyon Comment
  SEINET10965887  Brodiaea coronaria Charles C. Parry Parry s.n. 1887 Butte Chico, Calif. Comment
  SEINET194963  Brodiaea coronaria subsp. coronaria A. A. Heller 1938-5-22 15105 Butte On the roadside near the Chico airport Comment
  CHSC2076  Brodiaea elegans M. Underhill 1952-7-2 Butte 152 Comment
  UC725395  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte in fields and on roadside near Chico Airport Comment
  CDA39462  Brodiaea minor L. P. Janeway 2000-5-14 6721 Butte Sacramento Valley; East side of Pine Creek Road 0.3 mile north of Pine Creek Comment
  CHSC71465  Brodiaea minor Lowell Ahart 1998-7-19 8046 Butte On the west side of Hurleton Swedes Flat Road, about 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CAS-BOT-BC484503  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  CAS-BOT-BC484555  Brodiaea minor Lowell Ahart 1984-6-10 4686 Butte Along the edge of Hurletojn Swedes Flat Road, about 2 miles south of Forbestown Road, about 12 miles south-east of Oroville, California 450 Comment
  CAS-BOT-BC484560  Brodiaea minor John Thomas Howell 1955-6-14 30437 Butte Magalia 731 Comment
  SBBG45026  Brodiaea minor L. Constance 1941-5-28 2825 Butte foothills 3 mi SW of Paradise 304 Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  SEINET10472684  Brodiaea purdyi Mary Susan Taylor 1980-7-6 Taylor 3085 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  CAS-BOT-BC149546  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  JEPS106106  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  CAS-BOT-BC148837  Bromus carinatus var. marginatus Lowell Ahart 1984-6-10 4706 Butte Along the edge of the dirt road, about 2 miles southwest of the Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC106877  Bromus catharticus Lowell Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC38800  Bromus catharticus Vernon Oswald 1983-6-13 677 Butte Upper Bidwell Park, Chico, along the n edge of the Hooker Oak Recreation Area. 80 Comment
  JEPS107777  Bromus catharticus Lowell Ahart 2005-5-2 11767 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CAS-BOT-BC156075  Bromus diandrus John Thomas Howell 1967-6-22 42627 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC105260  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC93446  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  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
  JEPS113901  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km N-NE of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  JEPS106211  Bromus laevipes Lowell Ahart 2004-6-2 10988 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown 752 Comment
  RSA0112571  Bromus laevipes Lawrence P. Janeway, Emily M. Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  CHSC101292  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  JEPS115305  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CHSC31707  Bromus madritensis subsp. rubens L. Ahart 1970-4-20 44 Butte On creek bank. Peter Ahart Ranch, Honcut. 45 Comment
  POM183184  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. 1524 Comment
  UCD59252  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  SEINET10507840  Bromus orcuttianus Mary Susan Taylor 1978-7-18 Taylor 1674 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
  CHSC44550  Bromus sterilis Lowell Ahart 1979-5-29 1894 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC65211  Bromus tectorum Lowell Ahart 1995-5-30 7585 Butte Along the edge of the dirt road, south of Beatson Hollow, about 3/4 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  JEPS120094  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  JEPS87186  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  SEINET3450781  Bromus tectorum Unknown 2003-5-9 10120 Butte Gridley, Gridley, about 3 miles by air southwest, on the south side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CHSC11979  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC50388  Bromus vulgaris Vernon Oswald 1990-6-1 4276 Butte Butte Creek Trail, ca. 2 miles north-northwest of Lake De Sabla. Near the second intermittent streamlet south of the trailhead on Ponderosa Way (Doe Mill Rd). 609 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  RSA88126  Calamagrostis koelerioides J. T. Howell 1951-8-19 28154 Butte 2 miles west of Pulga. 366 Comment
  CHSC26730  Callitriche marginata M. S. Taylor; M. Hayes 1978-4-14 1560 Butte Vernal pool, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 16 mi s of Chico. 30 Comment
  JEPS115855  Calocedrus decurrens Lowell 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 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  LA6444  Calocedrus decurrens E. B. Copeland; 1931-7-28 sn Butte Jonesville, W of North Willow Creek 1650.0 Comment
  SEINET175334  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte On ridge W of North Willow Creek Jonesville 1650 Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  CHSC3353  Calochortus albus Robert L. Smith 1966-4-20 19 Butte Paradise, 5 miles SE of post office. Comment
  SEINET12046804  Calochortus albus D. J. Funk 1976-1 17 Butte ca 5 ft W of Humbug Rd & 150 yd NW of covered bridge on Butte Creek, 6.4 mi ESE of Chico 110 Comment
  CHSC46427  Calochortus luteus Lowell Ahart 1989-5-28 6298 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC491848  Calochortus luteus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC33571  Calochortus monophyllus M. S. Taylor 1981-4-27 3558 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC44981  Calochortus monophyllus Phillip Scott 1988-4-23 45 Butte Cohasset Road, ca. 3.0 mi n of Cohasset. 1066 Comment
  CHSC47586  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte About 1/2 mile east of the Oak Grove Cementery, about 1 mile south-east of Hurleton. 548 Comment
  CHSC4134  Calochortus tolmiei R. Carter 1966-4-26 359 Butte Found ca. 10 mi. NE Oroville along W side USFS road 21N40 to Bloomer Mt., 0.5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  RSA724933  Calochortus tolmiei L. P. Janeway 2006-5-14 8598 Butte Northern High Sierra Nevada: just west of Jordan Hill Road, 0.9 km east of Sawmill Peak lookout 953 Comment
  LA207379  Caltha leptosepala E. B. Copeland; June 1930 sn Butte Jonesville, N Willow Creek 1550.0 Comment
  UC596512  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  UC1876193  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  RSA493212  Calycadenia hispida Gerald D. Carr 1981-9-26 1161 Butte About 3 miles northeast of Honcut, on the Lowell Ahart Ranch Comment
  UCD129712  Calycadenia multiglandulosa L. Ahart; Peter Ahart 1984-6-10 4687 Butte Along the edge of a new subdivision road around 1 mile southeast of Hurleton, 1/2 mile east of Oak Grove Cemetary, around 10 miles east of Oroville. 500 Comment
  CAS-BOT-BC106082  Calycadenia oppositifolia John Thomas Howell 1962-6-16 37623 Butte Nelson Bar - Sierra Nevada 213 Comment
  CAS-BOT-BC106087  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 miles south of Berry Creek Inn 609 Comment
  CAS-BOT-BC106120  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. Paradise East quad 563 Comment
  CHSC84508  Calycadenia oppositifolia John Dittes; Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Cascade Range Foothills; Upper Bidwell Park; approximately 6.7 air-miles northeast of Chico, 2.5 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main road, just west of Parking Lot-R. 228 Comment
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Oct 16 2006
  RSA712871  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8649 Butte Northern Sierra Nevada Foothills Along west side of Lunt Road. 1.0 km. southwest of Highway 70. NAD83 495 Comment
  CHSC84034  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, about 2 miles north and 1 3/8 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  UC1971731  Calycadenia truncata 1977-7-4 2024 Butte 2.2 mi W of Paynes Road jct on Hwy 36 (milepost 61.80, ca. 17.9 mi NE of Red Bluff, jct Hwy 99) 464 Comment
  UCD129887  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte about 0.5 mile east of the western end of Jackson Ranch Ridge; 0.5 mile south of Road 21N25Y. Top of steep slope overlooking Frey Creek. 1066 Comment
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  UC725412  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  CHSC1362  Calyptridium monospermum R. M. Staley 1952-7-10 Butte Butte Meadows. 1356 Comment
  CHSC4592  Calyptridium monospermum C. Glascock 1965-6-12 435 Butte Moist rocky meadow ca. 34 mi. ne of Oroville on Old Quincy Road. Comment
  CAS-BOT-BC223608  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; beside Skyway 650 Comment
  UC1794960  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; besides Skyway 650 Comment
  CHSC46360  Calystegia occidentalis Lowell Ahart 1989-5-28 6300 Butte On a steep slope south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC62105  Calystegia occidentalis subsp. occidentalis L. P. Janeway 1993-7-2 4428 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Rd 22N84 2.6 mi from Rd 23N28 and 1.8 mi past its crossing of Stony Creek. 993 Comment
  UC843746  Camassia quamash A. A. Heller 1915-6-11 11959 Butte Butte Meadows in the Sierra Nevada Butte Meadows; Sierra Nevada, Butte Meadows 1219 Comment
  CAS-BOT-BC160852  Camissonia tanacetifolia subsp. tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Hiwy 97, Butte Creek Comment
  SEINET10939007  Campanula prenanthoides Taylor 1980-9-12 Taylor 3336 Butte West side of Highway 32, about 3 miles north of Forest Ranch, near Forest Ranch Fire Control Station, about a 5 milute walk west of the Highway on a dirt road. T23N R3E NW 1/4 Sec 21 Paradise Quad. 975 Comment
  SEINET10972401  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte Merrimac Comment
  CHSC113235  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC39073  Capsella bursa-pastoris R. A. Schlising 1983-3-20 4391 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CHSC35761  Cardamine breweri R. E. Preston 1982-6-18 303 Butte At stream margin; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  POM196064  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC43649  Cardamine breweri var. breweri Vernon Oswald 1985-5-14 1758 Butte Near Doon Camp on the Skyway e of Lovelock. Near a tributary of the Little West Fork of the Feather River. 853 Comment
  RSA0116210  Cardamine californica Mrs. R. M. Austin 1883-04 21 Butte Little Chico Creek. Comment
  CHSC101975  Cardamine californica var. californica John Copeland 1980-2-20 9 Butte Ca. 0.8 mile SE of Cohasset Road, E side of Maple Branch. Comment
  CHSC86426  Cardamine californica var. californica R. D. Fischer; Jenny Marr 2004-1-25 53 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. On Annie Bidwell Trail about a quarter mile south of old cabin site, which is just off of 10-Mile House Road. 228 Comment
  CHSC100966  Cardamine oligosperma Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15492 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC90636  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
  SEINET11991665  Cardamine oligosperma M. C. Earley 1982-1 12 Butte ca 11 mi ESE of Chico 112 Comment
  CHSC86575  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7769 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  RSA769678  Cardaria chalepensis L. Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley. 27 Comment
  CHSC48551  Carex L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3090 Butte Scotts John Cr 2.3 mi N of the Butte Cr Rd. 1889 Comment
  CHSC52745  Carex L. P. Janeway 1988-7-29 3134 Butte Near West Branch Feather River at crossing of road into Coon Hollow. 1615 Comment
  SEINET7468091 Image available Carex amplifolia Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11399 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn. Comment
  UC1108031  Carex angustata H. F. Copeland 1932-8-12 Butte Butte Creek Meadow Comment
  CHSC85920  Carex aquatilis var. aquatilis L. P. Janeway; Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Syca-more Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. 274 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CHSC89826  Carex barbarae L. P. Janeway; B. Castro 2004-6-13 8136 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. Growing in and up out of dry shallow roadside ditch about 20 m away from small creek. 829 Comment
  CHSC46857  Carex bolanderi R. A. Schlising; P. Broyles 1988-7-3 4564 Butte SE of Stirling City, past '5 corners' at small stream. Comment
  CHSC52253  Carex bolanderi L. P. Janeway; R. A. Schlising 1988-7-16 3008 Butte Along Willow Creek 1/2 mi NW of Jonesville. 1508 Comment
  JEPS117694  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  SEINET11125888 Image available Carex bolanderi Unknown 2009-1 24512 Butte Cascade Range Highlands (CaRH). E side on Concow Road near Clear Creek Ranch, 5 road miles N of route 70. Comment
  CHSC102212  Carex brainerdii L. P. Janeway 2009-11-14 9961 Butte High Cascade Range. Along Skyway 2.8 km north of Stirling City, top of ridge between Long Ravine and West Branch Feather River. 1183 Comment
  CHSC44118  Carex capitata L. P. Janeway 1988-7-29 3111 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  RSA0010332  Carex cyrtostachya P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CHSC102837  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC110144  Carex densa L. P. Janeway 2012-5-2 10813 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek between the creek and Upper Park Road, near Parking Area I. 105 Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  UCSB63748  Carex densa Ahart, Lowell 1998-6-9 Butte T20N, R4E, northeast 1/4 Section 17; southwest of the lone oak tree; northwest of the cow chute along Cherokee Road; North Table Mountain; about 7 miles (air) north of Oroville 403 Comment
  CHSC52861  Carex echinata subsp. echinata L. P. Janeway 1987-6-26 2311 Butte 2.5 mi E of Granite Ridge along road to Lynch and Logue Meadows; along Camp Creek. 1365 Comment
  CAS-BOT-BC19995  Carex feta Lowell Ahart 1980-7-4 2464 Butte Along Forbestown Road. 750 Comment
  CHSC102592  Carex feta L. P. Janeway; B. Castro 2009-7-4 9837 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
  CHSC44934  Carex feta Lowell Ahart 1988-7-31 6159 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  HSC96354  Carex feta L. P. Janeway 2003-6-8 7818 Butte Flea Valley, meadow at head of Concow Creek 1116 Comment
  SEINET4231831 Image available Carex feta L. Janeway, Castro, B 2009-1 9837 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. Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  CHSC59004  Carex fracta Lowell Ahart 1992-7-26 6850 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  UCD140346  Carex fracta L. P. Janeway 1987-6-26 2296 Butte Rag Dump, Fall Creek. 1173 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
  RSA88708  Carex hirtissima L. S. Rose 1937-6-10 37375 Butte Butte County: Forbestown. 838 Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  CHSC52911  Carex integra L. P. Janeway 1987-7-4 2429 Butte Dry open meadow near a seepy area along the road to Jones Meadow, 9.6 mi from Inskip; NW-facing slopes above Last Chance Cr. 1676 Comment
  JEPS121019  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville Comment
  SEINET4231762 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  SEINET4286003 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 C Butte Near Cornelia Lott Sank Memorial Spring Comment
  CAS-BOT-BC31123  Carex lemmonii L. P. Janeway; Robert A. Schlising 1988-7-22 3069 Butte Jonesville quad. Seep just above the High Lakes Rd. 3.4 mi W of the pass. In the canyon of Philbrook Creek. 1905 Comment
  CHSC112784  Carex lemmonii Lowell Ahart 2013-5-27 18712 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
  HSC87069  Carex lemmonii L. P. Janeway 1987-6-27 2344 Butte Just E of Keyser Creek, 4.3 mi. N of Ramsey Bar along Concow Rd. 1479 Comment
  SD471  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville; in a sunny bog. 1500 Comment
  CAS-BOT-BC32157  Carex multicaulis Lewis Samuel Rose 1937-6-10 37366 Butte 8 mi E of Hurleton 792 Comment
  SEINET10467331  Carex multicaulis Mary Susan Taylor 1981-3-31 Taylor 3450 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET11634492  Carex multicaulis M. S. Taylor 1981-1 3435 Butte along Feather River Hwy 70 just NE of Pulga to Cresta Powerhouse, ca 20 mi NE of Oroville 518 Comment
  CHSC89037  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8245 Butte High Cascade Range. At Cold Springs; north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  CHSC52245  Carex nudata L. P. Janeway 1987-6-20 2274 Butte Along Fall River near the road to Cascade 3.0 mi north of the Feather Falls-Lumkin Ridge Rd. 1013 Comment
  CHSC45051  Carex pachystachya Vernon Oswald 1987-5-7 2378 Butte Butte Creek Reserve on the n side of Butte Creek, e of the Skyway. 74 Comment
  CHSC43952  Carex praegracilis Vernon Oswald 1988-5-17 3309 Butte South side of Hwy 149, 0.2 mi w of Hwy 70 at Wicks Corner. 79 Comment
  JEPS120085  Carex praegracilis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18108 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC47060  Carex retroflexa var. texensis L. P. Janeway 1989-4-10 3215 Butte South side of Chico; along Salem Ave about W 14th St. 59 Comment
  CAS-BOT-BC117984  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro 1988-7-23 3088 Butte Jonesville quad. Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CHSC44964  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side cyn on N-side N Fk Feather River and along hwy 70 ca 5 mi E of Jarbo Gap. Site of old (probably) mining operation. 487 Comment
  CHSC61511  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte In a small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC45244  Carex subfusca S. C. Morey 1983-8-3 691 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC84709  Carex subfusca L. P. Janeway 2003-6-8 7821 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  OBI22634  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  SEINET10750078  Carex subfusca Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2497 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 36. Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1661 Comment
  SEINET7577159 Image available Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45066  Carex utriculata Vernon Oswald 1987-5-21 2918 Butte Humbug Rd. between the Skyway and the road to Philbrook Reservoir, near Memorial Spring just ne of Chaparral Guard Station. 1554 Comment
  CAS-BOT-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC52360  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2987 Butte Crane Valley (upper Big Kimshew Cr). 1569 Comment
  SD4817  Castilleja affinis E. B. Copeland 1930-7-12 468 Butte Jonesville; under north brow of ridge 2100 Comment
  CHSC77494  Castilleja affinis subsp. affinis Tim Stofer 1997-4-12 9 Butte Located on the east side of trail. 1/4 mi. from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  JEPS86449  Castilleja affinis subsp. affinis L. R. Heckard 1973-6-9 3426 Butte ca 5 mi e Oroville (Olive Hwy ca 0.4 mi from junction with Forbestown Rd) 365 Comment
  CHSC109609  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 428 Comment
  CHSC43947  Castilleja attenuata V. Oswald; L. Ahart 1988-5-15 3308 Butte Lumpkin Ridge ne of Feather Falls, ca. 1.5 mi e of Camp 18. 1249 Comment
  JEPS124165  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC82261  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UC1303176  Castilleja campestris subsp. campestris A. A. Heller 1927-4-25 14349 Butte between Oroville and Richvale (along the state highway in field near the Y) Comment
  JEPS122211  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast 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
  CHSC35073  Castilleja lacera R. Schlising; P. Broyles 1979-5-15 3406 Butte NE of Magalia and N of Sawmill Peak. 701 Comment
  JEPS117246  Castilleja lacera Lowell Ahart 2010-5-7 16625 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  JEPS4518  Castilleja lacera Rimo Bacigalupi and L. R. Heckard 1952-6-20 3754 Butte 3.0 mi e Hurlebut (along road between Hurlebut and Forbestown) 762 Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. Comment
  CAS-BOT-BC241127  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  POM284544  Castilleja miniata Lyman Benson 3956 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  JEPS124197  Castilleja pruinosa Lowell Ahart 2015-4-13 20035 Butte About 3 miles (air) north of Jarbo Gap, about 17 1/2 miles (air) North of Oroville Comment
  CHSC46316  Castilleja tenuis Vernon Oswalf 1989-6-8 3806 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 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
  CAS-BOT-BC48546  Ceanothus cordulatus A. A. Heller 1914-7-24 11623 Butte Sierra Nevada at Butte Meadows, on th banks of Butte Creek 1219 Comment
  SEINET10493633  Ceanothus cuneatus Mary Susan Taylor 1974-3-19 Taylor 87 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CHSC87450  Ceanothus cuneatus var. cuneatus R. D. Fischer 2004-3-28 84 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail, below the bluffs of the Disk Golf Course. 396 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UC449695  Ceanothus integerrimus W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek.) Comment
  UC725821  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte near Pulga (along the Feather River Hwy.) 420 Comment
  SEINET10837532  Ceanothus integerrimus Mary Susan Taylor 1976-4-27 Taylor 1087 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  SEINET13945935 Image available Ceanothus integerrimus Lewis S. Rose 1955-1 55099 Butte Paradise; 1700 ft alt. 518 Comment
  RSA15055  Ceanothus integerrimus var. macrothyrsus Daniel Cleveland 1882-07 s.n. Butte Sultant House. Comment
  CAS-BOT-BC52000  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CAS-BOT-BC52003  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte edge of the forest at Cohasset. above Pine Creek, several miles farther north Comment
  CAS-BOT-BC52018  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  UCR131691  Ceanothus prostratus C. B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada Mtns., 7 miles west of De Sable on road to Forest Ranch 762 Comment
  CHSC109623  Centaurea melitensis Lowell Ahart 2012-5-20 18101 Butte On the east side of the Humboldt Trail, southeast part of Upper Bidwell Park, northeast of Chico. 414 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  CHSC109683  Centaurea solstitialis Lowell Ahart 2012-7-5 18282 Butte On the north side of the gravel road, east of Cedar Grove. Lower Bidwell Park, Chlico. 71 Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  JEPS93821  Centaurium venustum Lowell Ahart 1998-7-1 8021 Butte about 7 air mi n of Oroville (nw of the Ione oak tree, about 1/8 mi nw of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC288527  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  CAS-BOT-BC271504  Centromadia parryi subsp. rudis Lowell Ahart 1981-5-16 2803 Butte Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley, Sutter Buttes Area 35 Comment
  CHSC68909  Cephalanthera austiniae Lowell Ahart 1997-7-11 7747 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  RSA722686  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC924237  Cephalanthus occidentalis var. californicus H. S. Reed 1939-7-10 298 Butte 5 mi nw Chico (banks of Sacramento River); Sacramento River 60 Comment
  CHSC20994  Cerastium glomeratum M. S. Taylor 1975-4-6 435 Butte In lawn, se corner of Arcadian and W. 3rd Ave, Chico. 60 Comment
  CHSC65777  Cerastium glomeratum Vernon H. Oswald 1996-3-22 7257 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC93490  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
  NY803930  Cerasus kelloggiana H. E. Brown 1896-10-2 117 Butte Near Oroville. 52 Comment
  CHSC107394  Cercis occidentalis Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  JEPS43470  Cercis occidentalis Joan O. Danielson 1966-4-6 37 Butte steep slope 800 ft above Nelson's Bar 609 Comment
  SD116545  Cercis occidentalis Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3318 Butte North Honcut Creek on Peter Ahart Ranch, 2.5 miles northeast of Honcut between Marysville and Oroville. 46 Comment
  CHSC78096  Cercocarpus betuloides var. betuloides Caleb E. Casey 1999-4-9 Butte South rim trail near Bear Hole, Upper Bidwell Park. Trail one half mile before Bear hole. 121 Comment
  CHSC86856  Chamaebatia foliolosa L. P. Janeway; Gavin Blosser 2003-9-3 7973 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 180 m south of Ponderosa Dam (South Fork Feather River). 299 Comment
  CHSC3023  Chamaecyparis lawsoniana Carl Pejsa 1958-4-19 28 Butte Bidwell Park Forestry Station. Comment
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Jul 25 2018
  CHSC3617  Chamaecyparis lawsoniana John Francis 1966-2-17 16 Butte Campus, Chico State College, Chico. Comment
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Jul 25 2018
  CHSC108134  Chamaesyce maculata Lowell Ahart 2011-10-29 17721 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  JEPS120617  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. Comment
  RSA754388  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC47421  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1977-9-20 1579 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC51262  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC61315  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC97327  Chamaesyce serpillifolia subsp. serpillifolia L. P. Janeway 2007-7-11 9114 Butte Northern High Sierra Nevada. Plumas National Forest; along the northern shoulder of Oroville-'Quincy Hwy 160 m southwest of 4-Mile Ridge Road. Occasionally common along road shoulder. 1006 Comment
  CHSC42506  Cheilanthes gracillima Lowell Ahart 1987-5-22 5677 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC113101  Chenopodium album Lowell Ahart 2013-11-18 19277 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
  SEINET10479016  Chenopodium botrys Lowell Ahart 1985-5-6 Ahart 4936 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  SEINET10479019  Chenopodium botrys Lowell Ahart 1983-8-16 Ahart 4285 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CDA3086  Chenopodium hians L. Ahart 2006-9-28 13368 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  UC179653  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte hills 8 mi n Oroville Comment
  UC1609417  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte ca. 6 1/2 mi. n.e. Stirling City (ca. 1/8 mi. s.w of Snow Mine, ca. 2 1/2 mi. e. of Bald Mt.) 1463 Comment
  CAS-BOT-BC184907  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte Along the Midway, about 0.5 mile south of Durham. 48 Comment
  CHSC11056  Chlorogalum angustifolium Lowell Ahart 1962-5-11 Butte Peter Ahart Ranch, Honcut. 39 Comment
  SEINET10472637  Chlorogalum pomeridianum Mary Susan Taylor 1980-7-6 Taylor 3053 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  HSC97883  Chondrilla juncea L. Ahart 2003-7-10 10372 Butte N slope of Ponderosa Dam, about 2 mi. (air) NW of Forbestown 297 Comment
  JEPS117264  Cicendia quadrangularis Lowell Ahart 2010-5-14 16645 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west 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
  HSC43130  Cicendia quadrangularis Maralyn O'Meara 1974-4-20 267 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  RSA0070561  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  SEINET10473713  Cirsium vulgare Mary Susan Taylor 1977-10-10 Taylor 1523 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
  CAS-BOT-BC438981  Cistanthe monosperma A. A. Heller 1915-6-11 11966 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC228754  Cistanthe umbellata E. B. Copeland 1930-6-28 s.n. Butte Jonesville; Scotch John 1750 Comment
  UC1716063  Cistus salviifolius M. S. Taylor 1975-5-6 561 Butte along creek between bridge connecting Holt Hall and Butte Hall, and bridge connecting Holt Hall and Chemistry Building California State University, Chico Comment
  RSA0059981  Clarkia arcuata R. T. Riding 1968-4-13 11 Butte North Table Mountain 396 Comment
  RSA337386  Clarkia biloba subsp. brandegeeae L. Ahart 1984-6-8 4658 Butte Along Ponderosa Way, 1/8 mile W of Ponderosa Dam, 2 miles NW ofForbestown 370 Comment
  JEPS108862  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 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
  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
  CHSC46385  Clarkia gracilis subsp. gracilis Lowell Ahart 1989-5-23 6250 Butte Along the edges of Avocado Road, about 1/2 mile west of Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  UC1071907  Clarkia mildrediae H. and M. Lewis, F. Vasek June 1950 756 Butte 0.5 mi s Arch Rock (Hwy.24); Feather River Comment
  CAS-BOT-BC163260  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4413 Butte Along French Creek Road 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy. 801 Comment
  CHSC71141  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. West-facing road cutbank. 902 Comment
  SEINET4145627  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mountain House, Brush Creek, and Mosquito Creek, 5 year old timber plantation above Road 22N49 0.1 mi north of French Creek Road 975 Comment
  LA206077  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 756 Butte Hwy 24, 0.05 mi S of Arch Rock on Feather River Comment
  CAS-BOT-BC163358  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte At the little building at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC70739  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte South end of Swayne Hill, along Road 23N28 0.8 mi west of Road 22N34. South-facing road cutbank. 731 Comment
  UC1730254  Clarkia mosquinii L. P. Janeway and Perrie Cobb 1993-7-6 4430 Butte 1.8 mi E-NE of Bald Rock Dome (Watson Ridge, southwestern end, 0.7 mi NW of Fall River) 1097 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SEINET10453161  Clarkia purpurea subsp. quadrivulnera Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4036 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  UCD104931  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  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
  CHSC70760  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of West Branch Feather River. 1402 Comment
  UC765866  Clarkia rhomboidea Robert F. Hoover 1936-5-21 1162 Butte 7 mi n Chico Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  SEINET12194214  Clarkia rhomboidea L. Ahart, Ahart, P. 1984-1 4651 Butte On a large road cutbank along Hwy. 40, now called Dark Canyon Rd., ca 2 mi E of Old Yankee Hill; 450 Comment
  CAS-BOT-BC165441  Clarkia unguiculata R. W. Thorp 1963-7-3 63 -55 Butte 12 miles northeast of Chico Comment
  SEINET516348  Claytonia exigua subsp. exigua Lowell Ahart 1985-1 4859 Butte Growing on damp bare broken disturbed serpentine W of Lunt Rd., about 1/2 mi. N of the intersection of Lunt Rd. and Hwy. 70. 518 Comment
  SEINET10572694  Claytonia parviflora Mary Susan Taylor 1981-5-5 Taylor 3619 Butte T20N R6E sw/ne sec 11. Forbestown quad. In shaded creek crossing 21N35Y, ca. 0.5 mi S of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC10812  Claytonia parviflora subsp. parviflora Lowell Ahart 1965-4-11 Butte Walsh Ranch. 60 Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CHSC87421  Claytonia parviflora subsp. parviflora R. D. Fischer 2004-3-15 111 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along the beginning of 10 Mile House Road near parking area at Hwy 32. 469 Comment
  CAS-BOT-BC439432  Claytonia parviflora subsp. parviflora A. A. Heller 1927-4-26 s.n. Butte In Bidwell Park east of Chico Comment
  CHSC26739  Claytonia rubra subsp. rubra M. S. Taylor 1977-7-15 1401 Butte Scattered creekside in the shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CHSC32639  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-31 3449 Butte Se side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CHSC56073  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2805 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. Soft soil of shady cutbank along the road. 1310 Comment
  CHSC23140  Clematis lasiantha M. S. Taylor 1976-2-25 1004 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CHSC95205  Clematis lasiantha R. D. Fischer 2004-3-28 806 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail. 335 Comment
  CHSC89461  Clematis ligusticifolia R. D. Fischer 2004-7-18 451 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. Along drainage, between road and Big Chico Creek. 216 Comment
  CHSC29382  Clintonia uniflora R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3770 Butte Near Strawberry Valley, 2.2 mi N of La Porte Road (=1.2 mi S of S end dam at Sly Cr. Red.), at Strawberry Valley Cr. 39 degrees 34' N 121 degrees 7' W. 1059 Comment
  CHSC84855  Collinsia heterophylla L. P. Janeway; John Hunt 2003-6-5 7811 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  UC426947  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville 1650 Comment
  CHSC109118  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC33149  Collinsia tinctoria J. D. Jokerst 1981-5-14 1322 Butte Top of North Table Mt, ca 300 M north of Cherokee Rd at the West edge of the mountain. Comment
  UC1594549  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte about 2 air mi n of Oroville (on n side of the dirt road, on n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  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
  SEINET10496937  Collomia heterophylla Mary Susan Taylor 1981-4-28 Taylor 3563 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC11957  Collomia linearis E. B. Copeland 1931-6-29 678 Butte Jonesville. Comment
  CHSC94493  Collomia tinctoria Lowell Ahart 2006-8-15 13190 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10544538  Comandra umbellata subsp. californica Mary Susan Taylor 1978-5-6 Taylor 1588 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10454740  Conium maculatum Mary Susan Taylor 1982-4-28 Taylor 4357 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
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Jun 19 2009
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  CDA41358  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  CHSC62587  Cordylanthus tenuis subsp. tenuis B. Castro 1993-8-5 494 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, abundant along road edges of sharp curve in USFS Rd 23N28. 1133 Comment
  JEPS60487  Cordylanthus tenuis subsp. viscidus T. I. Chuang, L. R. Heckard 1969-8-20 6738 Butte 0.2 mi below junction of Ridge Road on Humbug Road (near Nimshew (nw of Magalia)) 640 Comment
  UC426963  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville 1650 Comment
  JEPS19733  Cordylanthus tenuis subsp. viscidus Rimo Bacigalupi with Howard Whisler 1957-7-26 6038 Butte 2.2 mi sw of and below Nimshew (along Humbug Road on the eastern canyonside of Butte Creek); Butte Creek 609 Comment
  CHSC27211  Cornus florida var. rubra P. Moyer 1972-5-1 224 Butte CSUC Campus. N side Chico Creek, e side entrance Gus Magnolis Bridge. 60 Comment
  RSA28808  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  UC1122787  Cornus nuttallii C. G. Albertus 1933-7-3 40 Butte 1 3/4 mi. n.e. Promontory Point (Plot 67); Chico Quad. 1127 Comment
  CHSC38401  Cornus sessilis Vernon Oswald 1983-6-2 608 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the bank of Chico Creek. 207 Comment
  RSA0019461  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  SEINET12091577  Corydalis caseana Unknown 1983-1 4301 Butte ca 1 mi E of Butte Meadows, T26N, R4E, NW Section 28 1450 Comment
  JEPS115259  Cotoneaster pannosus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS115695  Cotoneaster pannosus Lowell Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CHSC101075  Cotula australis Lowell Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  CAS-BOT-BC427626  Crassula aquatica Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC103942  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC103991  Crassula aquatica Lowell Ahart 2010-5-14 16648 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC113201  Crassula aquatica Lowell Ahart 2014-4-16 19364 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
  CHSC90629  Crassula aquatica Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11661 Butte Big Chico Creek Ecological Reserve. About 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS98453  Crassula aquatica Lowell Ahart 2000-5-21 8379 Butte 10 mi NW of Oroville (slickens from the Cherokee mine, E side of Clark Road (Hwy 191), 200 yds S of Dry Creek) 60 Comment
  CHSC82231  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC111390  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte On the north side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CAS-BOT-BC427958  Crassula tillaea Lowell Ahart 1973-4-15 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 150 Comment
  CHSC102871  Crataegus monogyna L. P. Janeway; B. Castro 2010-4-30 9971 Butte Sacramento Valley. Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 100 m west of intersection of E. 8th Street and El Monte Avenue. 74 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
  CHSC35117  Crucianella angustifolia L. Ahart 1972-6-1 Butte Honcut. Comment
  UCD59960  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  UC1609326  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte about 2 mi se Bald Mountain (ne of Stirling City, on w side of a poor dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  UC1609327  Cryptantha affinis Lowell Ahart 1993-6-26 7018 Butte about 1 mi w Lost Creek Reservoir (e side of the dirt road) 1188 Comment
  UC196315  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  UC78399  Cryptantha affinis Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CHSC103993  Cryptantha flaccida Lowell Ahart 2010-5-14 16668 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 363 Comment
  CHSC106884  Cryptantha flaccida Lowell Ahart 2011-5-1 17336 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC94054  Cryptantha flaccida R. D. Fischer 2005-4-9 728 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant growing in the deeper soil of the roadside drainage. 518 Comment
  HSC101088  Cryptantha flaccida L. Ahart 1983-6-26 4119 Butte About 15 mi. NE of Oroville; along Ponderosa Way, ~2.0 mi. SE of the intersection of the Oroville-Quincy Highway and Ponderosa Way. 500 Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  SEINET10497277  Cryptantha flaccida Lowell Ahart 1985-5-10 Ahart 4951 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC29388  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-5 3644 Butte N of Lake Oroville along Hwy 70, s of the Pulga crossing of North Fork, Feather River. 609 Comment
  CHSC40753  Cryptantha intermedia Lowell Ahart 1985-5-31 5030 Butte About 5 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Boat Launch Aream about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  JEPS108983  Cryptantha intermedia Lowell 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 354 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  UC857289  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC85563  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte Near Magalia Comment
  UC333578  Cupressus macnabiana J. G. Lemmon 1895-12-2 Butte Magalia Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  CHSC25256  Cuscuta californica M. S. Taylor 1977-6-26 1369 Butte On s side of Ponderosa Way, ca. 4 mi e of Forest Ranch. 548 Comment
  CHSC45036  Cuscuta californica Lowell Ahart 1988-8-10 6170 Butte West of Lunt Road, about 1/2 mile north-west of Highway 70. 548 Comment
  JEPS93811  Cuscuta californica Lowell Ahart 1998-7-19 8048 Butte along Hurleton Swedes Flat Road 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  LA210099  Cuscuta californica E. B. Copeland; 1931-7-17 sn Butte Jonesville 502 Comment
  POM183161  Cuscuta californica H. F. Copeland 1930-8-26 1326 Butte Jonesville, above hotel. 1677 Comment
  RSA4473  Cuscuta californica var. papillosa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4390  Cynodon dactylon V. Hagaman 1966-5-25 Butte W 3rd st. between Chestnut and Hazel, Chico. Comment
  CHSC3916  Cynoglossum grande Wayne O. Baum 1967-3-24 22 Butte Ca 8 mi. e. of the Skyway and Humbug Rd. intersection, on the s. side of Humbug Rd. 365 Comment
  JEPS115300  Cynoglossum grande Lowell Ahart 2009-4-22 15570 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC47985  Cynoglossum occidentale Vernon Oswald 1985-6-20 1847 Butte Near Jones Creek on Rd. 26N27, ca. 1 mi ne of Jonesville. 1630 Comment
  CAS-BOT-BC190373  Cynosurus John Thomas Howell 1980-5-26 53582 Butte Sierra Nevada. 2 miles northeast of Pulga Bridge, North Fork of Feather River. Comment
  CHSC6129  Cynosurus echinatus E. Parreno 1968-5-12 102 Butte Ca. 50 m from Chico Creek in Upper Bidwell Park downstream from Alligator Hole, Chico. Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  SEINET10518396  Cynosurus echinatus K. Henegar 1969-5-15 Henegar 55 Butte Upper Bidwell Park, near Big Chico Creek at Bear Hole. Shaded area, sandy soil. Comment
  CHSC38899  Cyperus difformis Vernon Oswald 1983-7-8 839 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  JEPS104086  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CAS-BOT-BC114599  Cyperus eragrostis L. P. Janeway 1986-10-19 1937 Butte N side Durham-Pentz Rd, on Butte College agricultural land. 82 Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC109747  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS120025  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET7581946 Image available Cyperus flavescens Lowell Ahart 1987-9-4 5877 Butte North Honcut Creek, about 2miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  JEPS95883  Cyperus fuscus Lowell Ahart 1999-10-3 8287 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET176617  Cyperus inflexus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. 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
  JEPS115648  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC28890  Cystopteris fragilis M. S. Taylor 1980-2-17 2357 Butte Ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  POM218971  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, in woods by Butte Creek 1550 Comment
  RSA699257  Cystopteris fragilis L. Ahart 2004-6-22 11116 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 (air) miles west of Stirling City 629 Comment
  CAS-BOT-BC201005  Cytisus scoparius John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54411 Butte Madrone Lake near Berry Creek 600 Comment
  CAS-BOT-BC189854  Danthonia californica Lowell Ahart 1987-7-8 5812 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  UCD127393  Daucus carota Jerry Smith 1972-6-21 s.n. Butte Oroville. Comment
  CHSC3804  Delphinium gracilentum L. E. Dunkel 1965-3-30 11 Butte South road ascending Table Mtn., near Oroville. 243 Comment
  CHSC4033  Delphinium gracilentum Sadie Gualtieri 1967-3-6 Butte Collected: on Skyway to Paradise, 3 to 5 miles outside Chico; fields on S. side of hiway. Comment
  UCD95779  Delphinium hansenii W. R. Powell 1968-5-16 1501 Butte Along Olive Highway, 4 miles east of Oroville. 304 Comment
  CAS-BOT-BC8028  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  POM225867  Delphinium nuttallianum J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC53296  Delphinium variegatum Denise Dachner 1975-4-8 5 Butte Ca. 4 yds n of highway 32, 2 mi e of Chico. 60 Comment
  CHSC53297  Delphinium variegatum R. O. Gilpatrick 1970-3-20 19 Butte Found 1 mile S. on Bruce Rd. from intersection of Humboldt Rd., Chico. N.W. side of road. Comment
  CHSC90030  Delphinium variegatum Keith Bunney 1991-4-19 3 Butte Along roadside. 0.2 mi off e turnoff of Chico canyon road. Next to housing development near the road. 70 Comment
  CHSC93352  Delphinium variegatum subsp. variegatum Lowell Ahart 2006-5-3 12568 Butte Along a small stream, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 386 Comment
  UC726580  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  CHSC69120  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CHSC44247  Deschampsia danthonioides V. Oswald; L. Ahart 1988-7-13 3577 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 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
  SEINET10524160  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC41307  Deschampsia elongata S. C. Morey 1983-7-22 543 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC61655  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte Along Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  RSA718078  Deschampsia elongata L. Ahart 2006-7-16 12996 Butte on the northwest edge of Willow Creek, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northwest of Butte Meadows 1516 Comment
  UC398885  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  JEPS115600  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 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
  CHSC19647  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  CHSC3148  Dicentra formosa Gary Dutton 1966-4-23 225 Butte Found four miles north of Paradise on Rd. to Jones Village. Comment
  CAS-BOT-BC402386  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CDA36760  Dicentra pauciflora D. B. Joley 1969-6-12 268 Butte 9.5 miles northeast of Lomo, 0.5 mile east of Humboldt Rd., 25 ft above Butte Creek. Comment
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  SEINET10533972  Dichelostemma californicum A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5499 Butte Berry Canyon (Near Clear Creek) Comment
  UCD111668  Dichelostemma capitatum Christopher Mallek 2008-1 HW1- 12 Butte Magalia. 756 Comment
  UCD139228  Dichelostemma capitatum Richard Sannar 1982-3-16 24 Butte along State Route 70, 1 mile north of intersection with Palermo Road, south of Oroville. Comment
  CHSC45019  Dichelostemma capitatum subsp. capitatum Keith T. Pomeroy 1988-3-16 1 Butte 19 km nne of Chico, 2 km n of Centerville and 1.1 km e of Butte Creek. 360 Comment
  SD6364  Dichelostemma capitatum subsp. capitatum Daniel Cleveland Jul 1882 Butte No further location information given on label. Comment
  CHSC90610  Dichelostemma multiflorum Roberta A. Boer 1980-4-25 15 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, east side of Chico. 131 Comment
  SEINET3243527  Dichelostemma multiflorum Carl B. Wolf 1937-1 8781 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte. 91 Comment
  RSA339162  Dichelostemma multiflorum Margaret J. Williams, Wayne Roderick 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise 168 Comment
  SEINET10932619  Dichelostemma multiflorum A. Arthur Heller 1914-5-19 Heller 11421 Butte Hills 8 miles north of Oroville Comment
  SEINET12053816  Dichelostemma multiflorum I. Klockenbaum 5 s.n. Butte no further locality Comment
  SEINET10472607  Dichelostemma pulchellum Mary Susan Taylor 1982-5-2 Taylor 4396 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC37110  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC38809  Digitaria sanguinalis Vernon Oswald 1983-7-8 843 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel at Five Mile Recreation Area. 79 Comment
  CHSC41983  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  HSC97055  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  RSA703067  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte in a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CDA34289  Diospyros lotus L. Ahart 2010-6-12 16804 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  JEPS119747  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC10601  Diplacus douglasii Lowell Ahart 1961-3-16 Butte Salmon Hole. 91 Comment
  CHSC87411  Diplacus douglasii R. D. Fischer 2004-2-28 118 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). South trail leading into canyon. 548 Comment
  CAS-BOT-BC150500  Diplacus grandiflorus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC38690  Diplacus grandiflorus Vernon Oswald 1983-5-23 545 Butte Upper Bidwell Park, Chico, near Chico Creek at the east end of Yahi Trail. On flood plain of creek. 207 Comment
  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
  SEINET8225565  Diplacus grandiflorus Helen M. Edwards 1917-6-6 Butte Ile Sabla. Comment
  CHSC44747  Diplacus kelloggii R. Banchero 1980-4-7 94 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy, Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CHSC44814  Diplacus layneae R. Banchero 1980-6-12 210 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CAS-BOT-BC154174  Diplacus tricolor Peter H. Raven 1963-5-8 18360 Butte On State Highway 32, 5 miles west of Chico Comment
  CHSC37119  Disporum hookeri L. Ahart 1982-9-13 3810 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC136232  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  UC600767  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1586407  Dopatrium junceum Lowell Ahart, Peter Ahart, and Carl Wick 1991-7-21 6668 Butte Rice Experiment Station, about 1/8 mi S of Butte City Hwy, N of Biggs 30 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  CHSC52008  Downingia bella John P. McKeon 1980-4-22 10 Butte Ca. 20 m s of jct of Hwy 99 and Cana Hwy, 15 m w of Hwy 99, 19 km nw of Chico. 70 Comment
  RSA389175  Downingia bicornuta C. B. Wolf 1937-5-14 8673 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. Comment
  SEINET12329562  Downingia bicornuta Unknown 1984-1 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 Comment
  CHSC31556  Downingia cuspidata L. Ahart 1978-5-12 1713 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42257  Downingia cuspidata Lynda Sterling 1986-4-15 15 Butte 11 mi n of Chico, sw of jct of Broyles Road and Hwy 99E. Comment
  CHSC10787  Downingia ornatissima var. eximia Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS14465  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  SEINET13709887  Draperia systyla Lowell William Ahart, Lowell William Ahart 2003-1 10376 Butte 17 Mi. NE of Oroville, 2.5 Mi. E of Brush Creek Work Ctr. (39 Deg 41'28.3"N, 121 Deg 17'29.3"W) 3400 Ft. 1036 Comment
  CHSC11942  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville. ... Field redacted by CHSC, contact the data manager for more information 1500 Comment
  RSA0011687  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville. Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CAS-BOT-BC159640  Drymocallis glandulosa var. glandulosa M. S. Taylor 1982-5-2 4393 Butte Pulga serpentine, N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CHSC12109  Dryopteris arguta J. M. Pitts 1972-4-16 133 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC27945  Dryopteris arguta M. S. Taylor 1979-3-20 1949 Butte Ca. 1 mile n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC90204  Dryopteris arguta Lowell Ahart 2005-1-20 11473 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  CAS-BOT-BC70856  Dryopteris arguta Lowell Ahart 1975-3-7 s.n. Butte 1/2 mile from the Forbestown Reservoir, Forbestown 365 Comment
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  CHSC27259  Duchesnea indica P. Moyer 1972-3-11 123 Butte CSUC Campus. 200 ft. from n side of cafe annex bridge, w side off walkway. 60 Comment
  CHSC3880  Duchesnea indica Gary Dutton 1966-3-23 141 Butte North of Science Bld. along Chico Creek. CSC. Comment
  SEINET10449678  Dudleya cymosa Mary Susan Taylor 1981-5-15 Taylor 3735 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  UCD149846  Dudleya cymosa Harry George 1967-4-24 s.n. Butte Table Mt. Comment
  CAS-BOT-BC428072  Dudleya cymosa subsp. cymosa Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  CAS-BOT-BC428077  Dudleya cymosa subsp. cymosa Lowell Ahart 1980-5-25 2319 Butte Along Swedes Flat Road, near Bangor. Comment
  CHSC65166  Dysphania ambrosioides Lowell Ahart 1995-8-19 7616 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
  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
  SBBG120022  Dysphania botrys L. Ahart 2006-9-11 13282 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, about 1/8 mi W of the Poe Dam, about 0.75 mi NE of Pulga, about 21 mi (air) NE of Oroville 431 Comment
  CHSC113116  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC38312  Dysphania pumilio Vernon Oswald 1983-6-13 675 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. Common around a refuse dump. 85 Comment
  CHSC111170  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards east of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC197250  Echinochloa muricata A. A. Heller 1914-5-19 11418 Butte 8 miles north of Oroville Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  UCD75790  Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 mi. NW Biggs, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC208572  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC113142  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte In a rice field, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  UCD137954  Echinodorus berteroi Herbert L. Mason; Verne Grant 1946-9-4 13107 Butte Butte Sink. 833 Canal, West Gridley Road. Comment
  CAS-BOT-BC291137  Eclipta prostrata Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC28743  Eclipta prostrata R. A. Schlising 1979-10-14 3511 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC113216  Elatine Lowell Ahart 2014-4-26 19411 A Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC113361  Elatine Lowell Ahart 2014-4-25 19398 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  JEPS122196  Elatine Lowell Ahart 2014-4-25 19398 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC112425  Elatine ambigua Lowell Ahart 2013-6-5 18723 Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC31681  Elatine ambigua Lowell Ahart 1974-5-1 449 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 45 Comment
  JEPS120760  Elatine ambigua Lowell Ahart 2013-9-20 19061 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
  CHSC114986  Elatine californica Lowell Ahart 2015-5-5 20142 Butte Thermalito Afterbay, about 30 yards north of Larkin road, about 400 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC46021  Elatine chilensis Lowell Ahart 1974-5-1 448 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC42127  Elatine heterandra Lowell Ahart 1984-5-8 4598 Butte About 2-1/2 miles north and 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10447968  Elatine rubella Lowell Ahart 1984-5-8 Ahart 4598 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
  JEPS98285  Eleocharis acicularis Lowell Ahart 2000-5-11 8338 Butte 12 air miles SE of Oroville (along a small wash, 100 yds S of a dirt road, Peter Ahart Ranch, 1 1/2 mi N and 1 1/2 mi E of Honcut) 45 Comment
  CHSC94835  Eleocharis acicularis var. acicularis Lowell Ahart 2006-10-8 13435 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CDA38952  Eleocharis acicularis var. acicularis L. Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs Comment
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC113372  Eleocharis engelmannii Lowell Ahart 1980-7-4 2465 Butte Along Forbestown Road. 750 Comment
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  CHSC111159  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte on the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountainl, about 6 miles (air) north of Oroville. 273 Comment
  CAS-BOT-BC112792  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC38906  Eleocharis macrostachya Vernon Oswald 1983-5-31 594 Butte Upper Bidwell Park, Chico, 750 ft n of Upper Park Rd. and 2600 ft w of the power lines. 121 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. Comment
  SD427  Eleocharis macrostachya E. B. Copeland 1931-7-15 Butte Jonesville; in and beside the Lily Pond, a permanent pool. 533 Comment
  CHSC117404  Eleocharis pachycarpa B. Castro; Tom Boullion, Jessica Boyt 2008-10-21 1771 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. 57 Comment
  CHSC68441  Eleocharis pachycarpa L. P. Janeway 1987-6-8 2164 Butte Along French Creek Road across from the mouth of Ram Creek. 617 Comment
  SEINET11753256  Eleocharis palustris Unknown 1936-1 13051 Butte Mud Creek near Chico Comment
  JEPS99032  Eleocharis quadrangulata Vernon H. Oswald, Lowell Ahart, and Barbara Ertter 1998-10-22 9676 Butte 1 mi S of Oroville Municipal Airport (N shore of pond at clay pits on E side of Larkin Rd. just S of boundary of the Oroville WA) 41 Comment
  CHSC21138  Elodea canadensis M. S. Taylor 1975-10-4 959 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC28573  Elodea canadensis M. S. Taylor; J. D. Jokerst 1979-11-11 2278 Butte Irrigation ditch, at jct with Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC29845  Elodea canadensis K. R. Stern 1980-6-19 6661 Butte In Gold Run Creek, SE of Shippee Rd. 68 Comment
  POM319562  Elymus Patricia Wilder 1971-6-23 5285 Butte Magalia: north of Paradise; Coutelenc Road, just north of junction with Skyway Road, along railroad track. West slope of Sierra Nevada Mt. Range 732 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
  CHSC44454  Elymus glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UC600746  Elymus glaucus E. B. Copeland July, 1929 Butte Jones Creek Jonesville 1500 Comment
  JEPS119860  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. Comment
  CHSC102502  Elymus glaucus subsp. jepsonii Lowell Ahart 2009-5-30 15795 Butte 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
  CAS-BOT-BC410229  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CAS-BOT-BC410230  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Unspecified. Comment
  SEINET10453213  Epilobium adenocaulon var. holosericeum Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4212 A Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CDA38260  Epilobium brachycarpum G. F. Hrusa, S. Dubiel 2012-9-9 18507 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  UCD105375  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  UCR219102  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15602 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  RSA724844  Epilobium canum subsp. latifolium L. Ahart 2006-9-28 13386 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 10 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS95032  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7926 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  UC1563292  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6624 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  CHSC46144  Epilobium cleistogamum Lowell Ahart 1978-5-15 1728 Butte On the bottom of a vernal pool, in a pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC61325  Epilobium glaberrimum Lowell Ahart 1993-7-22 7091 Butte Along Fall River, on the east side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC46581  Epilobium hornemannii subsp. hornemannii V. Oswald; L. Ahart 1989-7-12 3850 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. On the edge of a stream on the slope above the meadow. 1926 Comment
  CHSC34715  Epilobium minutum M. S. Taylor 1981-5-21 3773 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  SEINET177952  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville at 'The Summit 2000 Comment
  UC177594  Epilobium obcordatum H. M. Hall 1914-7-27 9793 Butte Butte Mt. 2072 Comment
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC109598  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  UCD169262  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  UC873167  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville (in a field below the Quercus Douglasii belt) Comment
  CHSC21043  Equisetum hyemale subsp. affine M. S. Taylor 1975-10-4 965 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC90971  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8377 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road about 1.2 km north of Mayaro and North Fork Feather River, 0.2 km east of Camp Creek. 747 Comment
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Jul 8 2014
  CAS-BOT-BC291279  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  UC1594578  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  SFV11413  Erigeron divergens M. L. Vincent 1964-4-9 544 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  CAS-BOT-BC300617  Erigeron foliosus var. hartwegii Lowell Ahart 1983-7-24 4211 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC58883  Erigeron glacialis var. glacialis Lowell Ahart 1992-7-26 6855 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  RSA699540  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Rocky canyon edge of Humboldt Trail N of Bloody Pin Trail junction 412 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  JEPS100228  Erigeron petrophilus var. sierrensis Dean W. Taylor 2002-7-3 18216 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  CAS-BOT-BC216053  Eriodictyon californicum John Thomas Howell 1962-6-15 37450 Butte Magalia, Sierra Nevada 731 Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  CHSC33364  Eriodictyon californicum S. Posner 1972-9-24 Butte Betweem dredger tailings off Humbug Rd. 200 yds. south of Humbug Rd., 3 miles east of Skyway. Comment
  CHSC81523  Eriodictyon californicum Petra M. Lee 2000-5-6 Butte Forest Ranch. 3/4 mile down Crown Point Rd off Highway 32. 609 Comment
  CHSC80857  Eriogonum dasyanthemum Lowell Ahart 2001-7-6 8884 Butte West of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC259279  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC61643  Eriogonum lobbii Lowell Ahart 1993-9-8 7166 Butte Open bare areas, on the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  SEINET10838767  Eriogonum lobbii Mary Susan Taylor 1980-6-14 Taylor 2872 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC76063  Eriogonum luteolum var. luteolum G. F. Hrusa; T. D. Wilfred 1996-7-8 13104 Butte Serpentine outcrop at corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. 580 Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  UC426902 Image available Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte above Jonesville; ; above Jonesville, Butte Co. 2000 Comment
  CAS-BOT-BC269843  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC39139  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-6-23 4304 Butte N of Concow area and SE of Stirling City; on roadside bank. 914 Comment
  CHSC69110  Eriogonum nudum var. pubiflorum Lowell Ahart 1997-8-1 7791 Butte On and around rocks, on a rocky brushy mountain side, east of Little Kimshew Creek, east of Snow Meadow, about 1/4 miles east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC45370  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1987-6-10 2980 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  CHSC1335  Eriogonum umbellatum var. ahartii V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC36094  Eriogonum umbellatum var. modocense R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4326 Butte N Butte County NE of Philbrook Res., along crest leading to Snow Mountain Peak. 2103 Comment
  CHSC58941  Eriogonum umbellatum var. nevadense Lowell Ahart 1992-7-29 6868 Butte About 1 mile east of the Carr Mine, about 1/2 mile northwest of Lotts Lake. 1828 Comment
  CHSC30844  Eriogonum ursinum var. ursinum M. S. Taylor; R. Schlising 1980-7-6 3075 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  SEINET10479585  Eriogonum vimineum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4181 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  SEINET10937587  Eriogonum vimineum Mary Susan Taylor 1975-9-19 Taylor 921 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  SD5694  Eriophyllum lanatum E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  UC171430  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte near Stirling 1074 Comment
  CAS-BOT-BC308156  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1945-5-12 45044 Butte Richardson Springs 304 Comment
  CHSC77708  Eriophyllum lanatum var. grandiflorum Tim Stofer 1997-4-16 17 Butte This plant was located all along the trail 50 ft. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC86430  Eriophyllum lanatum var. grandiflorum Jenny Marr 1994-6-13 86 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC202360  Eriophyllum lanatum var. grandiflorum H. M. Hall 1914-7-1 9813 Butte near Jonesville (n Butte Co.); Sierra Nevada Mountains 1615 Comment
  UC867334  Erodium botrys A. A. Heller 1915-3-24 11777 Butte 5 mi s Pentz (near Dry Creek) Comment
  CHSC111367  Erodium brachycarpum Lowell Ahart 2012-5-10 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC663  Erodium brachycarpum B. Hetherington 1936-9-2 Butte Chico. 57 Comment
  CHSC33689  Erodium cicutarium L. Ahart 1981-3-29 2712 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, near Forbestown. 350 Comment
  CHSC90927  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC99320  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the 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
  CHSC670  Erodium moschatum C. Merton 1929-5-20 Butte Chico. 57 Comment
  UCD103256  Erodium moschatum A. A. Heller 1914-4-21 11313 Butte Chico. Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC31914  Erythranthe cardinalis M. S. Taylor 1980-8-30 3325 Butte Along edge of dirt road in seeps, in Long Ravine, ca. 0.5 mi n of Oregon Gulch Rd, ca. 2 mi s of Oregon City on Table Mt, 8 mi n of Oroville. 243 Comment
  CHSC47498  Erythranthe geniculata Lowell Ahart 1974-4-14 404 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC153864  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  SEINET8405463  Erythranthe glaucescens A. A. Heller 1926-4-26 13932 Butte near the Neale grade about 5 miles from Paradise; Upper Sonoran Life Zone. Comment
  CHSC105165  Erythranthe guttata Christopher T. Ivey 2007-4-28 366 Butte Clark Road, along Dry Creek, in cattle pasture on W side of road, 2.4 m S of Durham-Pentz Rd, 1.2 m N of Hwy 70. 82 Comment
  CHSC11898  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  CHSC2527  Erythranthe guttata W. Fitzwater 1958-3-15 Butte Rock Creek, Chico area. 243 Comment
  SD4699  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville, in a cold stream 1500 Comment
  CHSC2263  Erythronium multiscapideum A. Riker 1897-5-1 Butte Comment
  CHSC2266  Erythronium multiscapideum R. M. Staley 1953-7-18 Butte Rush Creek. Comment
  CHSC32627  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3471 Butte Se side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  UC725944  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte serpentine outcrop about 4 mi from Magalia (on Coutolenc road) Comment
  SEINET8477399  Erythronium multiscapideum M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CHSC33140  Eschscholzia caespitosa J. D. Jokerst 1979-3-20 1155 A Butte Table Mountain. Top of North Table Mt, above the waterfalls at the west edge of the mountain S fork of Coal Creek Canyon. Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  SJSU15292  Eschscholzia lobbii Lisa Morton 2002-3-30 13 Butte Upper Bidwell Park, Along N. Rim Trail on top of butte. 80 Comment
  SEINET12094432  Eschscholzia lobbii Unknown 1988-1 12 Butte ca 4 mi E of Hwy 70 on Palermo Rd., 4 mi S of Palermo Honcut Hwy., .1 mi E on Melody Lane 41 Comment
  CHSC48615  Eucalyptus camaldulensis Vernon Oswald 1987-6-8 2961 Butte Butte Creek Reserve on the nw side of the creek near the Little Chico-Butte Creek Diversion Channel, ne of Hwy 99. 68 Comment
  CHSC98570  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Ridge top row of these old trees. 235 Comment
  JEPS102784  Euonymus occidentalis var. occidentalis Lowell Ahart 2001-6-18 8879 Butte On the east side of the dirt road and east of the bridge across the West Branch of the Feather River, about 2 miles (air) SE of Stirling City. 609 Comment
  CAS-BOT-BC202426  Euphorbia ocellata A. A. Heller 1919-9-5 12645 Butte Hills 8 miles north of Oroville Comment
  SEINET10453781  Euphorbia serpillifolia Lowell Ahart 1990-9-30 Ahart 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC96930  Euphorbia spathulata Lowell Ahart 2007-6-3 13974 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  JEPS115677  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CAS-BOT-BC310670  Euthamia occidentalis Lowell Ahart 1982-9-12 3798 Butte Edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC109357  Fallopia japonica T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  SEINET10454411  Fatsia japonica Mary Susan Taylor Taylor 450 Butte Campus of the California State University, Chico. 61 Comment
  CHSC74041  Festuca arundinacea B. Castro; Linnea Hanson 1996-5-24 666 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on the W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CAS-BOT-BC278270  Festuca californica Lowell Ahart 1984-6-10 4701 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC96836  Festuca californica Lowell Ahart 2007-5-29 13939 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  JEPS122213  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CAS-BOT-BC278629  Festuca subulata Lowell Ahart 1981-9-15 3159 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CAS-BOT-BC278630  Festuca subulata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  SEINET10822121  Festuca subulata Lowell Ahart 2008-6-2 Ahart 14807 Butte T19N, R6E, southwest 1/4 Section 4. On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 671 Comment
  CHSC115405  Ficus carica M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC42748  Ficus carica Lowell Ahart 1987-8-8 5857 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC27221  Forsythia suspensa var. fortunei P. Moyer; R. Pessner 1972-3-11 115 Butte Footpath 100 ft. from L.S., s bank Chico Creek. CSUC Campus. 60 Comment
  CHSC34215  Fragaria vesca M. S. Taylor 1981-4-28 3571 Butte N side of 23N28.2, at jct of Chico Creek, ca. 4 mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  RSA4661  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC437083  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CAS-BOT-BC62935  Frangula californica subsp. tomentella Gladys L. Smith 1976-5-18 s.n. Butte Lower Feather River Canyon, right side of State Route 70 just before first new turnout. Comment
  CHSC33517  Frangula purshiana R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4142 Butte E of N fork Feather River at Coyote Gap region; on Four Trees Road. Comment
  SEINET10493572  Frangula purshiana Mary Susan Taylor 1981-5-13 Taylor 3703 Butte 4000 ft. T22N R6E ne sec 5, Pulga SE quad. Along creek crossing 22N66X (old RR bed) just N of Foreman Creek, ca. 1.5 mi S of Four Trees Rd, ca. 0.5 mi W of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  SEINET10969447  Frangula purshiana Mary Susan Taylor 1981-5-21 Taylor 3758 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC54322  Frankenia salina Vernon H. Oswald 1991-6-16 4665 Butte West Liberty Rd, 1.0 mile west of Pennington Rd, on the north edge of Gray Lodge. Roadside. 20 Comment
  POM130462  Frasera albicaulis var. nitida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  RSA25677  Frasera albicaulis var. nitida Carl B. Wolf 1941-7-23 11053 Butte Northern Sierra Nevada, seven miles west of De Sabla on road to Forest Ranch. 762 Comment
  CAS-BOT-BC223388  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC175530  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Big Chico Creek Chico Comment
  CAS-BOT-BC130318  Fritillaria eastwoodiae Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CHSC39597  Fritillaria eastwoodiae Lowell Ahart 1983-4-14 3933 Butte On the east side of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Reservoir., about 4 miles north-east of Forbestown. 450 Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  CHSC88989  Fritillaria eastwoodiae L. Hanson 1987-4-27 295 Butte Plumas National Forest. Near De Sabla. 822 Comment
  CHSC29995  Fritillaria micrantha L. Ahart 1980-3-26 Butte Ca. 1/2 mi e and 1/4 mi s of Hurleton. 600 Comment
  CAS-BOT-BC130429  Fritillaria pluriflora H. E. Brown 1897-4-15 141 Butte Near Clear Creek Comment
  CAS-BOT-BC130430  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CHSC40077  Fritillaria recurva R. M. Austin 1896-5-1 Butte East of Chico. 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
  CHSC3430  Galium aparine Judy Potter 1966-3-28 207 Butte On Table Mountain. Comment
  CHSC4005  Galium aparine E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC47477  Galium aparine Lowell Ahart 1974-4-14 398 Butte Peter Ahart Ranch, about 1 mi north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  CHSC11821  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  JEPS108981  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  SEINET10836822  Galium bolanderi Mary Susan Taylor 1979-6-22 Taylor 2168 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CAS-BOT-BC26139  Galium grayanum A. A. Heller 1914-8-7 11668 Butte Summit back of Jonesville, on the north side of the pass. Comment
  CDA6670  Galium mollugo Sterling O. Mattoon 1962-5-2 Butte Jesse Ranch, Nord Avenue at Bell Road, Chico. 0 Comment
  SEINET10968830  Galium nuttallii Mary Susan Taylor 1974-3-3 Taylor 70 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CHSC29770  Galium parisiense M. S. Taylor; L. Ahart, R. S. Schlising 1980-5-31 2750 Butte E side of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 609 Comment
  CHSC38658  Galium parisiense Vernon Oswald 1983-5-21 515 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft E of the power lines. 249 Comment
  POM319644  Galium parisiense Patricia Wilder 1971-6-23 5177 -a Butte Magalia. N of Paradise. Coutelenc Road just N of the jct with Skyway Road along railroad track. Sierra Nevada Mtn range. W branch of the Feather River. 732 Comment
  CHSC32671  Galium porrigens var. tenue M. S. Taylor; L. Hanson 1981-3-16 3406 Butte E side of Truex Rd, ca. 1/2 mi S of its jct with Hwy 70, ca. 7 mi N of Oroville. 304 Comment
  JEPS52735  Galium porrigens var. tenue Lauramay T. Dempster 1964-7-24 4043 Butte 3 mi s Nimshew 487 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  JEPS118052  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  UC1609077  Galium trifidum var. pusillum Lowell Ahart 1993-6-26 7017 Butte about 1/4 mi w Lost Creek Reservoir (small meadow n of dirt road) 1036 Comment
  CHSC30033  Gamochaeta argyrinea L. Ahart 1980-5-25 2326 Butte Along the edge of the road, ca. 1 1/2 mi e of the Bangor-Oroville Hwy, along Swedes Flat Rd, where the small stream crosses the road, near Bangor. 320 Comment
  CHSC108848  Garrya fremontii Lowell Ahart 2012-3-2 17759 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC11984  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville. 1650 Comment
  CHSC69045  Garrya fremontii Lowell Ahart 1997-8-1 7759 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1432 Comment
  CHSC77053  Garrya fremontii L. P. Janeway 2000-1-29 6630 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  CAS-BOT-BC282600  Gastridium phleoides Lowell Ahart 1985-6-17 s.n. Butte Near teh dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  CHSC58286  Gastridium phleoides Lowell Ahart 1992-5-9 6755 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
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  CHSC109532  Gaultheria ovatifolia L. P. Janeway; Tom Carlberg, Linnea Hanson+ 2012-5-27 10825 Butte Northern High Sierra Nevada. Along the road to Sly Creek Reservoir dam, 0.9 road km west of the south end of the dam; overlooking the upper end of Lost Creek Reservoir from the south. 1035 Comment
  UC600541  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 Butte at the Lily Pond Jonesville 1700 Comment
  CHSC25423  Gayophytum heterozygum Hayes; Warner 1977-9-11 60 Butte Along shoulder, Hwy 32, ca. 2 m s of road, exactly 24.6 mi e of Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  UC600542  Gayophytum heterozygum H. F. Copeland 1931-6-11 Butte betw. Scotchjohn Creek and Willow Creek; Jonesville, Butte Creek Canyon Comment
  SEINET10939929  Gayophytum heterozygum Mary Susan Taylor 1979-8-4 Taylor 2175 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
  POM220088B  Gayophytum racemosum H. F. Copeland 1927-9-4 448 Butte Jonesville. 1524 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
  POM183156  Gentiana simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville. 1524 Comment
  RSA4134  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  UC600681  Gentianopsis simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville Comment
  UC600682  Gentianopsis simplex H. F. Copeland 1924-8-12 Butte Jonesville Comment
  JEPS120004  Geranium dissectum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17856 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  SEINET10495121  Geranium dissectum Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4285 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
  SEINET10495129  Geranium molle Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4294 Butte T19N R4E se/ne sec 3. Oroville quad. Turnout near Bridal Path sign, across Feather River from Spillway, along Oroville Dam Blvd (Alt 40), ca. 2.5 mi w of Oroville Dam Visitors Center. Comment
  CHSC96819  Gilia capitata subsp. mediomontana Lowell Ahart 2007-5-29 13920 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 704 Comment
  RSA31857  Gilia capitata subsp. mediomontana A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  CHSC40921  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 4989 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC3750  Gilia tricolor R. L. Adams 1964-3-22 91 Butte At side of road, Upper Bidwell Park 4 mi. N. golf course, 9 mi. E. Chico. Comment
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  HSC23521  Gilia tricolor M. L. Hillier 1966-4-9 Butte 600 yds. NW of entrance to Bidwell Municipal Golf Course Comment
  SEINET10837194  Gilia tricolor Mary Susan Taylor 1980-3-1 Taylor 2350 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  UCSB44170  Gilia tricolor Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; heading toward Oregon City Comment
  JEPS98445  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte 3 mi SE of Paradise (a serpentine ridge, about 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  CHSC116983  Githopsis specularioides Lowell Ahart 2016-6-4 20932 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC116591  Glinus lotoides B. Castro; Robin Carter, Sabrina Bell 2013-10-3 2001 Butte Sacramento Valley. Ca 6 air mi SW of Oroville, 2 mi SE of Thermalito Afterbay and ca 0.5 mi W of Hwy 70 off Pacific Heights Road, in the Oroville Wildlife Area. 32 Comment
  CHSC42117  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte On the dry bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  JEPS120567  Glyceria declinata B. Castro and L. P. Janeway 2012-4-15 10805 Butte Northern High Sierra Nevada Foothills. North Table Mountain; along the main drainage to the Fern Falls branch of Coal Canyon about 0.6 creek km east of the Falls. Comment
  JEPS94779  Glyceria declinata Lowell Ahart 1998-6-9 7987 Butte about 7 air mi n Oroville (sw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  POM308583  Gnaphalium beneolens Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3234 Butte Feather River Hwy. Comment
  RSA21630  Gnaphalium luteoalbum C. B. Wolf 1937-6-12 8784 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  RSA715578  Gnaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC302470  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  JEPS124348  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 -A Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1586523  Goodyera oblongifolia Lowell Ahart 1991-9-19 6728 Butte about 2 mi nw of Four Trees (about 2 mi w of Croville-Quincy Highway, about 2 mi ne of Coyote Gap, near where 2 branches of Wildcat Creek come together); Wildcat Creek 1219 Comment
  CHSC23381  Grevillea banksii 1966-3-31 Butte Comment
  JEPS104637  Grindelia hirsutula Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, ca 1/8 mi e of Bean Creek Rd, ca 1 1/4 mi (air) se of Little Bald Rock, ca 4 mi (air) se of Brush Creek. 801 Comment
  UC177589  Hackelia californica H. M. Hall 1914-7-27 9789 Butte Humboldt Road; Sierra Nevada Mountains 2042 Comment
  UC177580  Hackelia nervosa H. M. Hall 1914-7-27 9790 Butte Big Summit, Humboldt Road Big Summit 2042 Comment
  CHSC78224  Hainardia cylindrica Lowell Ahart 2000-5-17 8364 Butte Near the south margin of the Thermalito Afterbay, on the poor dirt road, about 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 mioles (air) west of Oroville. 42 Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  CHSC109657  Hedypnois cretica Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico. 237 Comment
  CAS-BOT-BC306292  Hedypnois cretica Lowell Ahart 1980-4-28 2107 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC309404  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte Hills 8 miles north of Oroville Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  RSA718312  Helianthella californica var. nevadensis L. Ahart 2006-6-9 12644 Butte Along the north side of the service road to Bardes Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CDA13704  Helianthus bolanderi G. F. Hrusa 1997-8-5 14063 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC34786  Heliotropium europaeum L. Ahart 1981-9-26 3199 Butte On a gravel bar along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  SEINET10870095  Heliotropium europaeum Lowell Ahart 1983-9-17 Ahart 4426 Butte T22N R4E se section 31. East end of Kunkle Reservoir Dam, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC36532  Hemizonella minima L. Ahart 1982-6-4 3532 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC50313  Hemizonia congesta subsp. clevelandii Vernon Oswald; Mary Bailey 1990-5-19 4219 Butte First side branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows,' ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 115 Comment
  CHSC25344  Hemizonia congesta subsp. luzulifolia M. Hayes 1977-7-3 23 Butte Along Pentz Rd. 2.0 km east of Highway 99. 80 Comment
  SEINET10938048  Hemizonia parryi subsp. rudis Lowell Ahart 1983-9-19 Ahart 4456 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC82423  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2002-5-7 9628 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC57220  Hesperevax acaulis var. acaulis Vernon H. Oswald; Lowell Ahart 1992-3-24 4888 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.1 mi north of Burma Rd. 76 Comment
  CHSC90476  Hesperevax acaulis var. robustior Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  JEPS107420  Hesperevax acaulis var. robustior Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  CHSC45669  Hesperevax caulescens Vernon Oswald 1986-5-6 2000 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Along the fence line of a grazed pasture. 48 Comment
  SEINET3840036  Hesperevax caulescens Unknown 2003-5-14 10175 Butte Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  UCD80069  Hesperevax caulescens CNPS SN Foothill Team 2005-4-14 SNFN 0032 b Butte Private Rock Ranch, pasture about 120 m south of the ranch house and about 15 m east of the ephemeral creek running through the property. 95 Comment
  CHSC27304  Hesperolinon californicum T. B. Devine 1977-5-22 401 Butte Wurlitzer Farm, Vina Prairie. In grazed field next to Haile Rd ca 1 mi sw of Hwy 99. 57 Comment
  CHSC78154  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  UC1586396  Heteranthera limosa Lowell Ahart 1991-7-21 6669 Butte in rice field about 1/4 mi w Butte City Highway (w of Rice Experiment Station, about 3 mi w of Hwy 99, n of Biggs) 30 Comment
  CHSC104815  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and 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
  CHSC96960  Heterocodon rariflorum Lowell Ahart 2007-6-12 14074 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  UC398948  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville 1550 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  JEPS115260  Heteromeles arbutifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CAS-BOT-BC310278  Heterotheca grandiflora John Thomas Howell 1959-9-20 34626 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC420456  Heuchera micrantha var. erubescens A. A. Heller 1913-6-7 10822 Butte W Branch of the N Fork of the Feather river near Stirling 914 Comment
  SEINET10483022  Heuchera micrantha var. erubescens Mary Susan Taylor 1980-5-27 Taylor 2685 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
  CHSC45685  Hieracium albiflorum Vernon Oswald 1983-7-6 812 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CDA42950  Hirschfeldia incana L. Ahart 2012-10-28 18533 Butte Marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC40439  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. 350 Comment
  JEPS120759  Holocarpha virgata Lowell Ahart 2013-9-5 19022 Butte On west side of La Porte Road, about 1/4 mile SW of Dunstone Drive, about 2 1/3 air miles northeast of Huncut Comment
  CHSC40330  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 487 Comment
  CAS-BOT-BC280824  Hordeum Lowell Ahart 1981-5-16 2744 Butte Along edge of the road on the Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 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
  CHSC6727  Hordeum hystrix J. Wheeler 1968-4-22 587 Butte Upper Bidwell Park by golf course. Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  CAS-BOT-BC143344  Horkelia Clarence R. Quick 1952-6-30 52 -104 Butte Big Bar Mt., east of Pulga Comment
  CAS-BOT-BC536588  Horkelia californica var. elata Lowell Ahart 1983-6-21 4101 Butte Along Bloomer Hill Road, 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville 700 Comment
  CHSC48854  Horkelia tridentata Vernon Oswald 1983-6-22 743 Butte Near Humboldt Rd. (to Butte Meadows) 2.1 mi n-e of Calif. Hwy 32. 1310 Comment
  UCD113553  Horkelia tridentata L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC536260  Horkelia tridentata var. tridentata Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC45282  Hosackia crassifolia var. crassifolia Vernon Oswald 1987-6-23 3014 Butte High Lakes Rd. 2.1 mi (odometer) n of Philbrook Rd. 1828 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  SEINET5327465  Hosackia oblongifolia var. oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC65558  Hosackia stipularis var. ottleyi L. P. Janeway 1995-6-22 4807 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, at edge of Road 21N25A. 1097 Comment
  JEPS124324  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC44081  Hypericum anagalloides L. P. Janeway 1987-7-5 2451 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. Disturbed area along the rd; open but relatively moist due to proximity of wet mdw. Also in the mdw. 1798 Comment
  SEINET10720066  Hypericum anagalloides A. Arthur Heller 1914-8-6 Heller 11637 Butte Chico Meadows. 1219 Comment
  CHSC96820  Hypericum concinnum Lowell Ahart 2007-5-29 13925 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
  JEPS93795  Hypericum concinnum Vernon H. Oswald 1998-7-1 9244 Butte along spur road intersecting Rim Road 4.1 mi n of Jarbo Gap (1 air mi w of Pulga and 0.4 mi w of Rim Road) 853 Comment
  LA212279  Hypericum concinnum James R. Shevock; 1972-5-19 s.n. Butte Near Lake Oroville, along Highway #70. 91 Comment
  JEPS107575  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  JEPS119621  Hypericum perforatum Lowell Ahart 2012-6-21 18215 Butte About 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC401333  Hypericum scouleri H. F. Copeland 1920-7-24 17 Butte Bank of Colby Creek 1828 Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  JEPS119778  Ilex aquifolium Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 -A Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  SEINET12046587  Iris hartwegii Unknown 1977-1 45 Butte ca 3 ft. to E side of Vilas Rd. and 0.3 mi NE of jct of Cohasset Hwy and Vilas Rd., Cohasset 945 Comment
  CDA15387  Iris hartwegii subsp. hartwegii G. F. Hrusa 1997-4-3 13694 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CHSC2201  Iris hartwegii subsp. hartwegii W. Reed 1939-5-1 Butte Paradise 548 Comment
  CHSC3927  Iris macrosiphon Wayne O. Baum 1967-3-24 24 Butte Ca. 2 mi. e. of the Skyway and Humbug Rd. intersection, on the nw. side of Humbug Rd. 91 Comment
  CHSC90620  Iris macrosiphon Chris Bradley 1988-4-18 13 Butte Honey Run Rd. ca. 8 miles ese of Chico; on roadside ca. 1 mile e of Covered Bridge. 121 Comment
  JEPS120115  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC143451  Iris macrosiphon Mrs. R. M. Austin Mar 1896 13 Butte Little Chico Creek Comment
  CHSC49639  Iris tenuissima subsp. purdyiformis Vernon Oswald 1985-5-16 1761 Butte Humboldt Rd. to Butte Meadows, 2.0 mi ne of Hwy 32. 1371 Comment
  RSA4657  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC103698  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC113230  Isoetes nuttallii Lowell Ahart 2014-5-2 19426 A Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC83900  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  SEINET10932893  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2449 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC51025  Isolepis setacea Lowell Ahart 1990-7-15 6564 Butte Along a small 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
  SEINET10536078  Isopyrum occidentale Mary Susan Taylor 1981-3-24 Taylor 3448 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC94889  Juncus bufonius var. bufonius Lowell Ahart 2006-9-28 13380 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS98716  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  SEINET10795833  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 Ahart 16665 Butte T22N, R2E, northeast 1/4 Section 10. Normal size plants, on damp red thin soil, along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  JEPS88259  Juncus bufonius var. congestus Vernon H. Oswald and Lowell Ahart 1996-5-27 7658 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II); Sacramento River Wildlife Refuge, Llano Seca Unit 32 Comment
  UC1609050  Juncus bufonius var. occidentalis Lowell Ahart 1993-8-29 7119 Butte about 6 1/2 mi ne of Stirling City (about 2 1/2 mi ne of Bald Mountain) 1584 Comment
  RSA368330  Juncus cyperoides L. Ahart, P. Ahart 1984-7-10 4692 Butte About 0.5 mile SW of the jct. of Black Bart Road and Forbestown Road, ca. 14 miles E of Oroville. 650 Comment
  UC1562391  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  JEPS110169  Juncus ensifolius Lowell Ahart 2006-9-13 13317 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET10472445  Juncus howellii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4749 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  SEINET260324  Juncus howellii Lowell Ahart 1988-7-23 6071 Butte S of the intersection of Black Bart Rd and Forbestown Rd ca 1 mi W of Robinson Mill Rd 671 Comment
  JEPS98682  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CAS-BOT-BC312671  Juncus leiospermus John Thomas Howell 1978-4-17 52836 Butte Table Mountain 381 Comment
  SEINET11787469  Juncus leiospermus Unknown 1984-1 4589 Butte ca 0.5 mi N of Kunkle Reservoir, along Kunkle Cr, ca 2 mi S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  CHSC113242  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 392 Comment
  CHSC115400  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 Butte About 3/8 mile northeast of the Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 388 Comment
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC83946  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, about 130 yards south of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 332 Comment
  CHSC93499  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 346 Comment
  JEPS110150  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 405 Comment
  JEPS110155  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north 346 Comment
  JEPS117320  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  JEPS119681  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17984 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SBBG55177  Juncus leiospermus var. leiospermus B. Ertter, J. L. Strachan 1980-5-7 3309 Butte North Table Mtn, ca. 5 air mi N of Oroville 396 Comment
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  CHSC44643  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1653 Butte On the bottom of a pond. Easternmost pond on the south edge of Coon Hollow. 1706 Comment
  RSA368326  Juncus nevadensis H. F. Copeland 1930-7-25 1358 Butte Jonesville. 1524 Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS117325  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC57159  Juncus orthophyllus L. P. Janeway; R. A. Schlising 1988-7-16 3007 Butte Along Willow Creek 1/2 mi northwest of Jonesville. 1524 Comment
  CHSC96916  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  CHSC49626  Juncus tenuis Vernon Oswald 1987-5-12 2390 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. Near a dredger pond. 80 Comment
  UC1562428  Juncus tenuis Lowell Ahart 1990-5-24 6483 Butte about .12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  UC1609503  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 Comment
  UCD169268  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte On the north side of the South Fork of the Feather River. About 50 yards east of where Sucker Creek enters the South Fork of Feather River. About 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  UC1485933  Juncus triformis Lowell Ahart 1980-7-20 2474 Butte ca 15 mi ne Oroville (along Bean Creek Road, near the s side of Little Bald Rock) 1100 Comment
  CHSC78214  Juncus trilocularis Lowell Ahart 2000-6-6 8459 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville. 304 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. Comment
  CHSC111175  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southest of Gridley. 19 Comment
  CHSC116023  Juncus usitatus Lowell Ahart 2015-10-16 20560 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
  CHSC97123  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte On the south side a drainage ditch, on the north side of Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 22 Comment
  JEPS124333  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA729996  Juncus usitatus L. Ahart 2007-7-11 14292 Butte 11 yards west of the high gravel road (at turn before washout), about 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air)SW of Oroville. 36 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  CDA41422  Keckiella breviflora subsp. breviflora Ball & Raynor May 1945 s.n. Butte Chico. 0 Comment
  NY786845  Keckiella breviflora var. glabrisepala J. L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609.6 Comment
  NY790166  Keckiella breviflora var. glabrisepala L. Ahart 1980-6-19 2386 Butte Along the edge of Swedes Flat Road, ca. 2.5 miles east of the Bangor-Oroville Highway, near Bangor. 320 Comment
  UC1562418  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte about 4.5 mi sw Oroville (about 0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 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
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  CHSC113191  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC83090  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  UC1562422  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte se side Forbestown Reservoir (near the Forbestown Generator, along se side of dirt road) 487 Comment
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  SEINET10473869  Lactuca saligna Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5151 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS115631  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville 31 Comment
  CHSC28809  Lagophylla glandulosa J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 409 Butte Top of Table Mt, 100 m north of Cherokee Rd at the east edge of the top. 396 Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  HSC38107  Lagophylla glandulosa Thomas W. Nelson, Jane P. Nelson 1976-5-9 2448 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET10474765  Lagophylla glandulosa subsp. serrata Mary Susan Taylor 1982-6-24 Taylor 4748 Butte T22N R4E sw/ne sec 14. Pulga SW quad. Mixed Evergreen Forest; e side of Ponderosa Way (Rim Rd), 1.6 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2850 ft. 869 Comment
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  CAS-BOT-BC354116  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte One mile N of Rock Creek along the county rd parallelling US Highway #99E. Comment
  CAS-BOT-BC354121  Lasthenia fremontii Ahart Lowell 1980-5-4 2164 Butte Thermalito. Valley Grassland. 65 Comment
  SBBG128738  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte small vernal pool, ca. 30 yards W of Easter Cross Parking Lot, Upper Bidwell Park, ca. 1 mi E of Chico 89 Comment
  UCD73060  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC66159  Lathyrus angulatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7652 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 weeds between the hiking trail and the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC48510  Lathyrus brownii Vernon Oswald 1985-5-16 1762 Butte Chico Meadows 200 ft n of the spring. 1316 Comment
  CHSC50323  Lathyrus brownii Vernon Oswald; Lowell Ahart 1990-5-29 4264 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CHSC36963  Lathyrus latifolius M. S. Taylor 1982-8-16 4985 Butte Just S of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  RSA700396  Lathyrus latifolius H. Gray 2003-6-3 s.n. Butte Millsap Bar Road. Comment
  CAS-BOT-BC213283  Lathyrus sulphureus Lowell Ahart 1980-4-21 2100 Butte Peter Ahart Ranch, Honcut 50 Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  RSA303518  Lathyrus tingitanus James R. Shevock 1972-5-19 1760 Butte South of Oroville, Hwy 70. 52 Comment
  UC894089  Layia fremontii A. A. Heller 1914-4-14 11235 Butte 8 mi n Oroville Comment
  HSC38049  Layia fremontii Thomas W. Nelson, Jane P. Nelson 1976-5-9 2452 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC113135  Leersia oryzoides Lowell Ahart 2013-9-20 19056 Butte Along a ditch, about 100 yards west of the railroad, about 300 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC2368  Lepechinia calycina R. Carter 1965-6-15 225 Butte Found E of Paradise on Honey Run Rd., 1.3 mi. from intersection with Skyway on S side of road. 487 Comment
  CHSC750  Lepechinia calycina M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  UC215491  Lepechinia calycina Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CHSC50653  Lepidium didymum Lowell Ahart 1990-5-28 6501 Butte Along the edges of Palm Avenue, about 1/12 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC19949  Lepidium nitidum M. S. Taylor 1975-3-10 410 Butte Ca. 30 yds s of Covered Bridge on Butte Creek, ca. 8 mi e of Chico. Comment
  SEINET10907265  Lepidium nitidum Mary Susan Taylor 1974-3-26 Taylor 88 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  CAS-BOT-BC12803  Lepidium perfoliatum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CHSC35756  Lepidium pinnatifidum R. E. Preston 1982-6-9 298 Butte At the edges of a dirt road; ca. 1/2 mi nw of HQ, Gray Lodge State Wildlife Area, ca. 8 mi sw of Gridley. 20 Comment
  CHSC82413  Lepidium strictum Lowell Ahart 2002-5-7 9615 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UCR237300  Lepidium strictum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18748 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  UCR148775  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise 335 Comment
  CAS-BOT-BC273947  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-9 5456 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC2157  Leptochloa fusca subsp. fascicularis Don Bower 1923-7-16 Butte 3A Llano Seco. 30 Comment
  UCD63945  Leptochloa fusca subsp. fascicularis A. A. Heller 1919-8-13 13354 Butte Between Nelson and Richvale. Comment
  UCD64022  Leptochloa fusca subsp. uninervia H. Clem Meith 1968-11-1 Butte Oroville. Comment
  CAS-BOT-BC226522  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville 82 Comment
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Jul 19 2018
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  CHSC28978  Leptosiphon bolanderi R. A. Schlising 1980-3-17 3514 Butte E of Chico and SW of Paradise, along Skyway, on cliffs above Butte Creek. 213 Comment
  CHSC36716  Leptosiphon bolanderi R. Schlising; R. Banchero 1980-5-13 3587 Butte Serpentine outcrop above Hwy 70 and above Bardees Bar on N Fork of Feather River, ca 2 mi S of Pulga. 441 Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  CHSC45457  Leptosiphon bolanderi Lowell Ahart 1980-6-1 2363 Butte On the east side of Kunkle Reservoir, about 2 miles south-east of Paradise. 518 Comment
  CHSC36813  Leptosiphon ciliatus L. Ahart 1982-6-15 3576 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC9705  Leptosiphon ciliatus Nancy Mosman 1971-7-11 67 Butte In meadow ca. 10 ft from s side of Humboldt Road and ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC2430  Leptosiphon filipes R. Carter 1965-6-17 236 Butte Found ca. 15 mi. NE of Oroville at Bald Rock Dome, 15 yds. E of Bean Creek Rd. on road that goes to the dome. 1051 Comment
  CHSC86861  Leptosiphon filipes L. P. Janeway; John Hunt 2003-5-21 7791 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CHSC23865  Lessingia virgata Lowell Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34143  Lessingia virgata L. Ahart 1981-9-27 3211 Butte Field near or ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  CAS-BOT-BC342064  Lessingia virgata John Thomas Howell 1951-8-19 28151 Butte Hills west of Oroville Comment
  RSA181930  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  CAS-BOT-BC444184  Lewisia nevadensis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  UC392224  Lilium pardalinum E. B. Copeland Jul 1929 Butte Jonesville , Butte Creek (along Butte Creek) 1550 Comment
  CHSC43046  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-5 2139 Butte French Cr Rd 6.2 mi from OroQuincy Hwy and Stanwood Saddle. Along Ram Cr ca 0.2 mi up from mouth at French Cr. 609 Comment
  CHSC43047  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-27 2334 Butte Along dirt rd 0.6 mi east of Ramsey Bar; just north of 'The Big Hill. 1386 Comment
  LA22091  Lilium washingtonianum E. B. Copeland; 1931-7-12 615 Butte Jonesville 1600.0 Comment
  CAS-BOT-BC133042  Lilium washingtonianum subsp. washingtonianum Lowell Ahart 1986-7-2 5335 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CAS-BOT-BC133047  Lilium washingtonianum subsp. washingtonianum A. A. Heller 1928-6-28 14670 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC49660  Lilium washingtonianum subsp. washingtonianum Vernon Oswald 1983-7-6 810 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. 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
  RSA700274  Limnanthes alba T. W, Henrich 2004-12-4 s.n. Butte Chico, Meghdadi Property in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC87554  Limnanthes alba subsp. alba R. D. Fischer 2004-5-2 124 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located approx. 800' south of gated end of park property off 10 Mile House Road. Located, east bank, 20' from Big Chico Creek. 236 Comment
  CHSC2388  Limnanthes alba subsp. versicolor R. Carter 1965-4-12 178 Butte Found 7.5 mi. E of Oroville, 20 yds. from gate at end of Feathervale on N side of road. 274 Comment
  POM253300  Limnanthes douglasii A. A. Heller 1938-3-27 15005 Butte Along U.S. Highway 99E, junction with the Cana road. Comment
  UC971796  Limnanthes douglasii Herbert L. Mason 1941-4-6 12415 Butte hills w Cherokee Comment
  RSA262376  Limnanthes douglasii subsp. douglasii Gary L. Carlin 1971-4-10 4 Butte Cherokee Road, north rim of Table Mountain, 6.5 miles north of Oroville. Comment
  CHSC55716  Limnanthes douglasii subsp. nivea Jennie J. DuBose 1991-4-2 3 Butte Ca. 45 m w of Table Mountain Cherokee Road. 3.75 km n of Oroville on n Table Mountain. 366 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
  JEPS119683  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  JEPS18178  Limnanthes douglasii subsp. rosea Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5611 Butte near junction of road to Oregon City (along Oroville-Concow road) 388 Comment
  RSA424712  Limnanthes douglasii subsp. rosea Aaron Liston, M. Blumler 1987-4-24 658 -3 Butte Table Mountain, N of Oroville on Cherokee Road. 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
  CHSC112705  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  UC907828  Linanthus bicolor P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway-up Hunnicut Grade); Hunnicut Grade Comment
  CHSC24786  Linanthus dichotomus C. E. Stopher 1976-4-13 17 Butte 2.4 km s of Forest Ranch. 579 Comment
  CHSC47039  Linanthus dichotomus R. A. Schlising; J. D. Jokerst 1985-4-8 4462 Butte N of Hwy 70 crossing of Lake Oroville and SW of village of Yankee Hill. Comment
  JEPS117685  Linanthus harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  POM219475  Linanthus pungens subsp. pulchriflorus E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top west of the Summit 2150 Comment
  CHSC117420  Lindernia dubia var. anagallidea Lowell Ahart 2016-5-30 20883 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC31875  Lindernia dubia var. anagallidea L. Ahart 1973-6-21 255 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51015  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-4 6541 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
  JEPS104373  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  UC109513  Linum lewisii T. S. Brandegee 1902-6-28 Butte Jonesville Comment
  SEINET10493810  Linum lewisii Lowell Ahart 1985-5-15 Ahart 4993 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CAS-BOT-BC111974  Lipocarpha micrantha Lowell Ahart 1974-8-14 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  RSA0106687  Lipocarpha micrantha Lowell Ahart 2013-11-13 19239 Butte Below high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC26769  Liquidambar styraciflua P. Moyer 1971-10-1 17 Butte CSUC campus. Along So-wil-len-no Ave. 60 Comment
  UC600635  Listera convallarioides H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CAS-BOT-BC36588  Lithocarpus densiflorus var. echinoides A. A. Heller 1913-6-7 10798 Butte Near Stirling 1074 Comment
  CHSC62459  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Plumas National Forest. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees Road; ca 1.25 mi northeast of Coyote Gap. 1463 Comment
  CHSC1649  Lithophragma affine E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  CHSC32826  Lithophragma bolanderi W. Michael Foster 1981-4-19 7 Butte Ca. 300 ft nw of Hwy 70, ca. 1/2 mi ne of Cherokee rd., and ca. 11 mi n of Oroville. 344 Comment
  CHSC90016  Lithophragma parviflorum Peggy Fain 1991-4-21 21 Butte Ca. 2.5 km. E. of Richardson Springs Hotel (S. bank of Walker Creek just east of Spanish Corrals). 243 Comment
  CHSC12190  Lithophragma parviflorum var. trifoliatum Lowell Ahart 1973-4-15 190 Butte Swedes Flat Road, Bangor. 304 Comment
  CHSC51107  Lithophragma parviflorum var. trifoliatum Gerald A. Winter 1989-4-15 12 Butte Ca. 100 yds w of Cherokee Road on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  CHSC50423  Lithophragma tenellum Vernon Oswald 1990-6-14 4298 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1905 Comment
  CAS-BOT-BC428448  Lithophragma trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek east of Chico near the Honey Run grade bridge. Comment
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CHSC30727  Logfia filaginoides M. S. Taylor 1980-5-27 2661 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC50645  Logfia filaginoides Lowell Ahart 1990-5-25 6480 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 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
  CHSC116999  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC26785  Logfia gallica M. S. Taylor 1978-5-6 1591 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CAS-BOT-BC342386  Logfia gallica A. A. Heller 1914-6-2 11148 Butte Hills 8 miles north of Oroville Comment
  HSC38142  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2450 Butte At the intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CAS-BOT-BC269079  Lolium perenne Lowell Ahart 1980-5-10 2231 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC4384  Lolium perenne M. M. Gregg 1966-5-21 170 Butte NW end of CSC campus: around the artificial ski jump. Chico. Comment
  CHSC31864  Lomatium caruifolium var. denticulatum L. Ahart 1979-5-12 1876 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC62411  Lomatium macrocarpum B. Castro 1987-5-21 115 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 493 Comment
  JEPS119532  Lomatium macrocarpum Lowell Ahart 2012-4-20 17897 Butte On the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC27673  Lomatium utriculatum Robert A. Schlising 1978-4-23 3226 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S. T. RR and Coutelenc Road. Comment
  CHSC90586  Lomatium utriculatum Jack Judkins 1983-4-16 14 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of Covered Bridge. 274 Comment
  UC190774  Lonicera conjugialis Mrs. R. M. Austin July 1896 Butte Colby Comment
  CAS-BOT-BC240444  Lonicera hispidula Lowell Ahart 1985-6-30 5082 Butte East of the road to the Forbestown Res. Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC195  Lonicera hispidula H. Goodyear 1939-5-4 Butte Honey Run grade 457 Comment
  CAS-BOT-BC240688  Lonicera interrupta J. F. Emmel 1970-4-5 252 Butte Mud Creek near Ponderosa Way 670 Comment
  CAS-BOT-BC240692  Lonicera interrupta Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  JEPS117151  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  UC1129064  Lotus humistratus C. G. Albertus 1933-6-1 11 Butte 6 mi sw Paradise; Chico Quad. 152 Comment
  RSA21306  Lotus humistratus Carl B. Wolf 1937-5-13 8651 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 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
  SEINET12161683  Lotus micranthus B. L. Wiley 1975-1 6 Butte 5.4mi up Cherokee Rd from junct w/ Table Mtn Blvd 488 Comment
  SEINET12165761  Lotus nevadensis Unknown 1985-1 5039 Butte Enterprise Lauch Area, ca 3/4miW of Enterprise Bridge acroos Lake Oroville, NE of Oroville 274 Comment
  POM276705  Lotus oblongifolius Lyman Benson 3967 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  JEPS98532  Lotus purshianus var. purshianus 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
  RSA769807  Lotus purshianus var. purshianus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  RSA769900  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg ) of Honcut, 6.6 mi. SE (116 deg ) of Gridley 27 Comment
  UC862223  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12826 Butte Butte Meadows 1402 Comment
  SEINET7042709  Lotus wrangelianus A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  UCD66033  Ludwigia hexapetala R. McKee; G. Woods 2006-8-1 06- 30 -LU Butte Oroville Wildlife Area, e. of Feather River, w. of Hwy 70 access from Pacific Hts Rd. 30 Comment
  UCD66036  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-2 06- 28 -LU Butte Feather River, east bank at Oroville Wildlife Area south of Thermolito. Access from DFG Wildlife Area levee road. 23 Comment
  CHSC109778  Ludwigia palustris Lowell Ahart 2012-10-20 18510 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC11366  Ludwigia palustris Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 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
  CAS-BOT-BC198304  Lupinus Charles Piper Smith 1949-4-21 49122 Butte Magalia, 2.5 miles northeast, De Sable Road Comment
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  CHSC48520  Lupinus albicaulis Vernon Oswald 1984-5-23 1205 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. 463 Comment
  CHSC95163  Lupinus albicaulis R. D. Fischer 2004-6-20 816 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles to Chico Meadow (Camp Lassen, BSC) on Scout Road. 1280 Comment
  CHSC901  Lupinus albifrons R. Carter 1964-3-23 64 Butte 5 mi. E of Chico Rd. on Cherokee Rd. on rocky bank on E side of road. 60 Comment
  UCD105915  Lupinus albifrons A. A. Heller 1915-3-25 11782 Butte southwest of the Marysville Buttes. Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  CDA38768  Lupinus albifrons var. albifrons L. Ahart 2012-4-2 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC196035  Lupinus albifrons var. collinus Ira L. Wiggins 1925-3-25 1445 Butte On road one and one half miles above Pence on Pence-Magalia road Comment
  SEINET10484602  Lupinus apertus Haas 1983-9-8 HAAS UMO 173488 Butte On mcrae ridge w of plumas-eureka state park. Study by plumas nat for botanist Comment
  SEINET5767545 Image available Lupinus arbustus subsp. silvicola A. A. Heller 1917-1 12853 Butte summit above Jonesville 2134 Comment
  CHSC90498  Lupinus bicolor Jose Romero 1983-4-20 12 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  CHSC90515  Lupinus bicolor Michael D. Mayes 1983-4-19 16 Butte Ca. 6 mi ese Chico s side of Butte Creek, 75 yds w of Covered Bridge. 152 Comment
  SEINET10838149  Lupinus bicolor subsp. tridentatus Johnson 1978-4-16 Johnson 2 Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset Rd. At lassen ave., 3 Mi. N of chico, butte co, calif. At edge of moist Pasture in gravelly loam with grass and other annuals of valley grassland. 61 Comment
  CHSC923  Lupinus bicolor var. tridentatus L. Nelson 1935-3-12 Butte Paradise. 548 Comment
  CHSC924  Lupinus bicolor var. tridentatus P. Delaplane 1965-4-6 29 Butte Fairly abundant along side of Cohasset Rd. 3/4 mi above turnoff to Richardson Springs Rd. Chico. 243 Comment
  POM23581  Lupinus densiflorus var. densiflorus C. C. Bruce 1897-05 2033 Butte Butte Creek. Comment
  CHSC45037  Lupinus latifolius var. columbianus Lowell Ahart 1988-9-4 6184 Butte Near Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  CHSC25005  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville. Colby Canyon. 487 Comment
  CHSC60982  Lupinus lepidus var. sellulus Lowell Ahart 1993-6-26 7042 Butte About 1/4 mile north of Jackass Flat, Mooreville Ridge, about 1 1/4 miles (air) north-west of Lost Creek Reservoir. 1188 Comment
  UC85081  Lupinus lepidus var. sellulus R. M. Austin July 1896 701 Butte Colby Comment
  UC726131  Lupinus microcarpus var. densiflorus A. A. Heller 1938-5-15 15094 Butte along the railroad near Gridley; near Gridley Comment
  CHSC48567  Lupinus microcarpus var. microcarpus Vernon Oswald 1987-4-27 2347 Butte Forest Ave. ca. 300 ft s of E. 20th St., Chico. 71 Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  UCD109262  Lupinus nanus M. I. Wibawa 1996-4-14 8 Butte North Table Mountain, 100 m. W of Cherokee Rd., N of Oroville. 500 Comment
  UCD108927  Lupinus nanus Rimo Bacigalupi; Robbins, Chisaki 1956-4-19 5609 Butte along rd. to Oroville from Cherokee, at top of descent into North Fork of Feather River Canyon, 3.5 miles n. of Cherokee. 396 Comment
  SEINET10837990  Lupinus nanus subsp. menkerae D. Kroessig 1979-3-28 Kroessig 1 Butte Corolla blue and white (variation with pink and white). Large table mtn Population, ca 6 mi n of oroville on cherokee rd, t.20n, r.4e, sec.17. 381 Comment
  JEPS117212  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  CHSC48536  Lupinus obtusilobus Vernon Oswald; Lowell Ahart 1987-7-1 3069 Butte Humbug Rd. 0.3 mi w of Butte Creek, ca. 2 mi (air) ese of Jonesville. 1755 Comment
  CHSC103001  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 209 Comment
  JEPS115377  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico 209 Comment
  JEPS87401  Lupinus pachylobus Vernon H. Oswald and Lowell Ahart 1993-3-24 5243 Butte e side Dry Creek Canyon (n of the historical site of Pentz, on the e side of a secondary drainage entering Dry Creek 2 mi n Pentz Rd. Area burned during previous summer); e side of Dry Creek Canyon n of historical site of Pentz 262 Comment
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  CHSC90039  Lupinus stiversii Robert C. Hill 1990-4-12 18 Butte At entrance to Enterprise Boat Launch. 13 mi e of Oroville, 1 mi w of Enterprise Bridge. 457 Comment
  RSA32779  Lupinus vallicola subsp. vallicola A. A. Heller 1938-4-23 15046 Butte Along the Feather River Highway near the bridge over the river east of Oroville. Comment
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  CHSC41289  Luzula cascadensis S. C. Morey 1983-7-21 496 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC113511  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC600795  Luzula comosa var. laxa H. F. Copeland 1932-7-17 Butte In damp woods across road from Copeland Cabin (Jonesville); Jonesville 1550 Comment
  CHSC109621  Luzula macrantha Lowell Ahart 2012-5-12 18028 Butte On the south side of the large meadow, south of the deep drainage, about 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. 328 Comment
  CHSC60591  Luzula macrantha Vernon H. Oswald; Lowell Ahart 1993-4-21 5289 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC98955  Luzula macrantha Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  CAS-BOT-BC441211  Luzula macrantha L. P. Janeway 1987-5-10 2040 Butte Near PG&E ditch ca 3/4 mi. N of DeSabla Reservoir and near where Doe Mill Road crosses the ditch 853 Comment
  CHSC61521  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte Along a seep in a small meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET10498037  Lycopus americanus Mary Susan Taylor 1975-10-3 Taylor 934 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  JEPS117541  Lythrum hyssopifolia Lowell Ahart 2010-6-9 16780 Butte On the east side of vernal pool full of dodder, about 30 yards south of the poor dirt road, about 60 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CAS-BOT-BC342710  Madia elegans Lowell Ahart 1982-6-4 3543 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC52002  Madia elegans subsp. densifolia B. Castro 1987-9-25 228 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  RSA755346  Madia elegans subsp. densifolia L. Ahart 2009-7-9 16015 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  UCR219267  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15586 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CAS-BOT-BC344313  Madia exigua Lowell Ahart 1982-6-15 3561 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 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
  JEPS120500  Madia exigua L. P. Janeway 2012-6-7 10861 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road / Ponderosa Way. Comment
  SEINET10475532  Madia exigua Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4050 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  JEPS117380  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC44511  Madia gracilis Lowell Ahart 1988-6-21 6056 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  JEPS119875  Madia gracilis Lowell Ahart 2012-6-2 18129 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  UC600743  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  RSA725049  Madia madioides L. P. Janeway 2007-6-11 9038 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  SEINET10904899  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2707 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  RSA0045596  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  CAS-BOT-BC512736  Maianthemum stellatum H. F. Copeland 1929-6-12 1255 Butte Jonesville, in woods on banks of Jones Creek 1524 Comment
  CHSC34446  Marah fabacea var. agrestis R. E. Preston 1979-4-19 15 Butte 75 yds nw of Singer Creek, northernmost Butte County. 56 Comment
  CHSC573  Marah fabacea var. agrestis S. Ptomey 1929-4-1 Butte Bidwell Park. 60 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 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
  CHSC31531  Marsilea vestita L. Ahart 1971-6-5 77 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8735  Marsilea vestita S. Chulasmai 1966-5-20 42 Butte Horseshoe (Mud) Lake. Comment
  CHSC31380  Matricaria discoidea J. D. Jokerst 1979-4-20 1208 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd, and the E edge of mt. 396 Comment
  CHSC390  Matricaria discoidea P. Delaplane 1965-3-23 7 Butte At entrance to H. Wurlitzer Ranch: Ca. 13 mi NW of Chico. W of Hwy 99E N. 106 Comment
  CHSC29116  Meconella californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2459 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC34400  Meconella californica R. N. Bowman 1981-5-21 2083 Butte East-facing slope, s bank of Butte Creek, .1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  SEINET10476234  Meconella californica Mary Susan Taylor 1975-3-10 Taylor 407 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
  CHSC101141  Medicago arabica Lowell Ahart 2009-5-15 15712 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
  CHSC98803  Medicago lupulina L. P. Janeway 2008-5-19 9365 Butte Sacramento Valley. East side Chico; east side of Hwy 99 between 8th and 9th Streets, in the western part of the CalTrans Park and Ride area. In a wet area of open compact ground with various ornamental plantings between asphalt parking areas. 66 Comment
  JEPS103293  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  UCD80307  Medicago polymorpha CNPS SN Foothill Team 2005-5-4 SNNR 0016 Butte City of Chico, Upper Bidwell Park, in the flood zone of Chico Creek. 81 Comment
  CHSC101314  Medicago praecox Lowell Ahart 2009-4-22 15575 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC45288  Medicago praecox Vernon Oswald 1987-4-8 2314 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. 85 Comment
  CDA13253  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET10599298  Melica aristata Edwin B. Copel 1929-7-18 Copeland 337 Butte Jonesville. In open pine and fir woods. 1550 Comment
  CAS-BOT-BC269377  Melica californica Lowell Ahart 1983-6-26 4108 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 Oroville 500 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
  SEINET10508155  Melica californica Mary Susan Taylor 1982-5-21 Taylor 4490 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  SEINET10559685  Melica californica var. nevadensis A. Arthur Heller 1915-4-20 Heller 11860 Butte 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. In the digger pine and oak belt. 76 Comment
  CHSC116593  Melica harfordii L. P. Janeway 2015-6-17 11782 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower forbestown Road 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. 826 Comment
  CHSC100928  Melica stricta R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4327 Butte Northeast of Phillbrook Reservoir, along crest of Snow Mountain 2103 Comment
  CHSC34062  Melica stricta L. Ahart; M. S. Taylor 1981-8-15 3049 Butte At base of cliffs near dirt road from Coon Hollow to Poison Springs, ca. 1 mi se of Snow Mt, ca. 15 mi ne of Inskip. 2000 Comment
  JEPS119719  Melilotus albus Lowell Ahart 2012-6-28 18243 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CDA5711  Mentha pulegium L. Ahart 2000-7-17 8593 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC759  Mentha spicata E. Walker 1932-7-20 Butte Durham. 57 Comment
  UC480657  Mertensia ciliata H. F. Copeland 1930-7-27 Butte beside So. Willow creek Jonesville 1828 Comment
  CHSC46593  Micranthes bryophora V. Oswald; L. Ahart 1989-7-12 3849 Butte Road between Jones Meadow and Lotts Lake, ca. 3mi (air) se of Philbrook Reservoir. 1901 Comment
  CAS-BOT-BC428756  Micranthes californica Lowell Ahart 1980-3-8 2029 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC10754  Micranthes californica Lowell Ahart 1965-3-1 Butte Ahart Ranch, Honcut. 42 Comment
  RSA0058979  Micranthes californica Lowell A. Ahart 2012-4-9 17825 Butte Seeps on the southeast bank of Big Chico Creek, about 20 yards northwest of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC108867  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte Near large rocks, on the west side of South Rim Trail, about 1/2 miles southwest of the old homestead, pond and Ten Mile House Road, about 3/4 miles west of Highway 32, about 8 miles northeast of Chico. 255 Comment
  CHSC24941  Micranthes integrifolia W. A. Vaccaro 1976-4-17 2 Butte Ca. 2.3 mi e of Centerville, on s side of Humbug Road. 128 Comment
  CHSC101970  Micropus californicus J. Boze 1982-5-8 438 Butte Along edge of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC4591  Micropus californicus var. californicus C. Glascock 1965-5-11 378 Butte Ca. 7.5 mi. ne of Chico and 3.6 mi. s of Russell Dr., S Paradise, ca. 30 yds. se of Hwy. Comment
  CHSC40485  Microseris acuminata Lowell Ahart 1985-4-21 4879 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  UCD80103  Microseris acuminata CNPS SN Foothill Team 2005-4-15 SNFN 0081 b Butte City of Chico, Doe Mill Meadowfoam Preserve, ~50 m from the western boundary and ~70 m from the northern boundary. 85 Comment
  CAS-BOT-BC348695  Microseris acuminata K. L. Chambers 1952-5-16 409 Butte 2.3 mi. s. of Cherokee, on road from Paradise to Oroville Comment
  CAS-BOT-BC348880  Microseris douglasii subsp. douglasii Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC3263  Microsteris gracilis M. L. Hillier 1966-3-4 Butte Along rd. side about 400 yds. s. of Rock Creek bridge of Cohasset Rd. Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  CHSC42770  Mimetanthe pilosa Lowell Ahart 1987-8-8 5853 Butte On the bottom of North Honcut Creek, about 2miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 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
  UC196052  Mimulus aurantiacus var. grandiflorus A. A. Heller 1914-5-18 11407 Butte near Forest Ranch; Sierra 609 Comment
  RSA309183  Mimulus glaucescens Robert F. Hoover 1936-5-21 1158 Butte 3 miles north of Chico Comment
  CHSC113293  Mimulus guttatus Lowell Ahart 2014-4-9 19344 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC118862  Mimulus guttatus Christopher T. Ivey 2017-5-27 388 Butte Honeyrun Road, about 3 km NE of bridge crossing Butte Creek, wet meadow E side of road. 163 Comment
  JEPS117543  Mimulus guttatus 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
  RSA0119046  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  UC426958  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville 1500 Comment
  RSA60037  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  SFV3394  Mimulus guttatus M. L. Vincent 1962-4-16 197 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  UC886302  Mimulus moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows 1280 Comment
  CHSC44758  Mimulus moschatus R. Banchero 1980-6-17 243 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC64018  Mimulus moschatus B. Castro 1987-8-29 213 Butte At s edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 mile E of Hwy 99 bridge. 60 Comment
  UC600645  Mimulus primuloides H. F. Copeland 1920-7-11 362 Butte Scotch John Meadow Jonesville Comment
  SFV3401  Mimulus torreyi M. L. Vincent 1960-7-12 96 Butte Sierra Nevada On shore of new Paradise Dam, north of Paradise. 780 Comment
  UC1552175  Mimulus torreyi Barbara Ertter 1988-6-19 7647 Butte ca 1/2 mi sw Jonesville (on road to Butte Meadows, n tip of Butte Co.) 1524 Comment
  UC726132  Mimulus tricolor A. A. Heller 1940-5-13 15614 Butte 3 mi w Chico (along State Hwy 32) Comment
  CHSC93358  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 333 Comment
  CHSC93347  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
  CDA11950  Minuartia douglasii G. F. Hrusa, J. Hart 1989-4-15 5920 Butte Sierra Nevada; North Table Mountain, Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33106  Minuartia douglasii M. S. Taylor 1981-5-15 3738 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Hwy 70. 1219 Comment
  CHSC75488  Minuartia douglasii G. F. Hrusa; T. D. Wilfred 1997-5-7 13721 Butte Sierra Nevada. Serpentine outcrop on SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CAS-BOT-BC433045  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC37433  Moehringia macrophylla R. A. Schlising 1982-5-19 4250 Butte E of village of Feather Falls at Lumpkin ridge. 1280 Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC60102  Monardella breweri subsp. lanceolata B. Castro; J. Jurewicz 1991-9-16 447 Butte Ca 23 air mi NE of Oroville, ca 4 mi NE of Mtn. House along Oro-Quincy Hwy, on E side of USFS Rd 22N80 ca 0.2 mi NE of its jcn with the Oro-Quincy Hwy. 1203 Comment
  CAS-BOT-BC219948  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Near the edges of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville 500 Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC318571  Monardella odoratissima subsp. pallida H. F. Copeland 1920-8-29 135 Butte Jonesville woods 1219 Comment
  UC2035851  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At the Summit Jonesville 2000 Comment
  CAS-BOT-BC220454  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte On Highway #24, 23 miles east of Oroville Comment
  CHSC96829  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  RSA232885  Monardella sheltonii L. S. Rose 1968-6-12 68114 Butte Feather River Canyon; Pulga. 488 Comment
  RSA712788  Monardella villosa subsp. sheltonii L. P. Janeway 1994-6-23 4672 Butte Pinkston Canyon Road about 400 feet east of Concow Road. 564 Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  CHSC56572  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-1 2928 Butte Along meadowy creek draining the lake of southeastern-most headwaters of Butte Creek. In the creek and at dryish edges. 1935 Comment
  UC600488  Montia chamissoi H. F. Copeland 1932-6-27 Butte in and at edge of Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows Comment
  CAS-BOT-BC444885  Montia fontana Lowell Ahart 1987-5-12 5631 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  RSA755352  Montia fontana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC31881  Montia fontana subsp. chondrosperma L. Ahart 1974-4-7 354 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC445035  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutelence Comment
  SEINET10572668  Montia parvifolia Mary Susan Taylor 1981-5-11 Taylor 3692 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  JEPS110334  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC112724  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19222 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  RSA4652  Muhlenbergia filiformis E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  UC1609245  Muhlenbergia filiformis Lowell Ahart 1993-7-6 7047 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  CHSC110396  Muhlenbergia mexicana Lowell Ahart 2012-9-28 18471 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  SEINET7294631 Image available Muhlenbergia mexicana var. filiformis John Thomas Howell 1961-1 26716 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC274935  Muhlenbergia rigens Lowell Ahart 1982-10-15 3896 Butte N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 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
  CHSC97371  Myosotis discolor Paul Maslin 2006-4-15 41 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC30882  Myosurus apetalus var. borealis J. D. Jokerst 1979-4-6 1180 Butte On bottom of vernal pools. Top of North Table Mt, ca. .75 mi N of Cherokee Rd. 396 Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  SEINET946111  Myriophyllum brasiliense Lowell Ahart 1987-1 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 610 Comment
  CHSC37394  Myriophyllum spicatum R. A. Schlising 1980-8-31 3978 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC60375  Nasturtium officinale Lowell Ahart 1989-5-23 6239 Butte North of the new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road. 76 Comment
  SEINET10907333  Nasturtium officinale Mary Susan Taylor 1974-4-28 Taylor 211 A Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  UC1719845  Navarretia heterandra David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC1251  Navarretia leptalea V. Holt 1951-7-8 Butte Butte Meadows. 1219 Comment
  POM65124  Navarretia leucocephala subsp. leucocephala Copeland 1903-5-15 3047 Butte Chico. Comment
  POM65860  Navarretia pubescens A. A. Heller, H. E. Brown 1902-5-14 5547 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC233616  Navarretia pubescens David D. Keck 1933-5-30 2414 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  CHSC116737  Navarretia tagetina Lowell Ahart 2016-5-24 20848 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  CHSC26823  Navarretia tagetina M. S. Taylor 1978-5-7 1597 Butte In vernal pools, on e side of Williams Rd, on Butte College campus, ca. 1/2 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  RSA717292  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC33375  Nemophila heterophylla Steven Azevedo 1980-4-16 13 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC698  Nemophila menziesii E. Canfield 1904-4-1 Butte Richardson Springs road. 83 Comment
  UCD120075  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte On Table Mountain, north of Oroville. Comment
  CHSC11970  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville. 1650 Comment
  CHSC115431  Nerium oleander Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  CHSC105956  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC113103  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 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
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  CAS-BOT-BC171464  Oenothera campestris 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
  UC558451  Orobanche vallicola E. B. Copeland 1936-11-2 Butte Chico Comment
  UC1609416  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte 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
  SEINET10549648  Orthocarpus attenuatus Mary Susan Taylor 1975-4-11 Taylor 455 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  SEINET10964393  Orthocarpus campestris Lowell Ahart 1984-4-25 Ahart 4585 Butte T17 N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  SEINET6225234  Orthocarpus erianthus L. S. Rose 1967-1 67054 Butte Oroville Comment
  CAS-BOT-BC254365  Oryza sativa G. P. Rixford 1914-9-4 s.n. Butte Biggs Comment
  CAS-BOT-BC316886  Packera eurycephala var. lewisrosei John Thomas Howell 1967-6-22 42619 Butte Magalia 701 Comment
  JEPS104825  Packera eurycephala var. lewisrosei Dean W. Taylor 1995-8-6 15385 Butte N end Rocky Ridge, 6 air mi E of Paradise, northern rim of North Fork Feather River canyon; Lassen National Forest 975 Comment
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Jun 15 2007
  JEPS26675  Packera eurycephala var. lewisrosei P. C. Hutchison 1961-6-9 2097 Butte 1.0 mi s (above) Pulga Bridge (on highway U.S. Alt. 40, canyon of the North Fork of the Feather River); North Fork of the Feather River Comment
  CHSC111736  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte About 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC253702  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  CHSC116501  Panicum dichotomiflorum B. Castro; Andy Rogers 2014-7-16 2034 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy footbridge. 55 Comment
  CHSC43275  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1987-8-30 5869 Butte Road gutter, along Highway 70 about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  UC1562491  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (near McCabe Creek, below high water mark Lake Oroville); , near McCabe Creek 228 Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CHSC1208  Papaver californicum V. Holt 1933-5-1 Butte Duham. 46 Comment
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Dec 20 2007
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA712869  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern Sierra Nevada Foothills. Above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. 201 Comment
  JEPS119623  Parthenocissus quinquefolia Lowell Ahart 2012-6-21 18210 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  RSA718154  Paspalum distichum L. Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  SEINET10939921  Paxistima myrsinites Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5224 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  CHSC101138  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  SEINET10497365  Pectocarya pusilla Lowell Ahart 1985-5-10 Ahart 4960 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC49019  Pedicularis attollens Vernon Oswald 1987-7-29 3167 Butte Southwestern-most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  CHSC115495  Pedicularis densiflora L. P. Janeway 2015-3-16 11636 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC49020  Pedicularis densiflora Vernon Oswald 1984-4-9 1123 Butte Feather Falls Trail, 0.6 trail mi n of the trail head at the end of Bryant Ravine Rd. 731 Comment
  POM297982  Pedicularis densiflora A. A. Heller 1919-3-29 13097 Butte Cherokee mine. Comment
  SEINET10549178  Pedicularis densiflora Mary Susan Taylor 1981-3-16 Taylor 3402 Butte T21N R6E sw sec 18. Brush Creek quad. S side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC4898  Pellaea andromedifolia Bill Wilson 1967-4-15 24 Butte Collected on N ridge above diversion dam on Big Chico Creek, Bidwell Park, Chico. 137 Comment
  SEINET10529792  Pellaea andromedifolia Mary Susan Taylor 1979-3-20 Taylor 1957 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
  UC399519  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  HSC66085  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Cr. Canyon 100 ft. E of Lumpkin Rd. 2.5 mi. N of jct. with Forbestown rd. 18 mi. NE of Oroville 396 Comment
  SEINET10971559  Pellaea mucronata Lowell Ahart 1983-3-28 Ahart 3912 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  SEINET10931288  Penstemon azureus subsp. angustissimus Mary Susan Taylor 1981-5-11 Taylor 3688 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  CHSC64668  Penstemon azureus var. azureus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 868 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with hwy 70. 1010 Comment
  UC886964  Penstemon deustus var. deustus A. A. Heller 1915-6-16 12023 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  CHSC21055  Penstemon heterophyllus var. purdyi M. S. Taylor 1975-6-30 815 Butte Ca. 300 yds w of Cohasset Hwy, Cohasset. 731 Comment
  SEINET10548027  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1982-6-24 Taylor 4729 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC107592  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC49029  Penstemon laetus var. leptosepalus Vernon Oswald 1984-5-23 1202 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
  CHSC95079  Penstemon laetus var. leptosepalus L. P. Janeway 2006-6-25 8697 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC1012164  Penstemon laetus var. leptosepalus F. W. Pennell and A. A. Heller 1940-6-5 25682 Butte Route 24 along Feather River (above Oroville, in Lassen Nat. Forest); Lassen Nat. Forest, along Feather River 640 Comment
  NY627284  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  SEINET5329277 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte T23N R8E S5 SE1/4 Comment
  CAS-BOT-BC239452  Penstemon rydbergii var. oreocharis R. Banchero 1980-8-1 329 Butte 0.4 mi w of the e end of Philbrook Res., 4.3 mi se of the jct of Skyway and Philbrook rd. 1706 Comment
  RSA4460  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville. By Butte Creek. 1500 Comment
  RSA0059021  Pentagramma pallida C. C. Bruce 1897-06 1870 Butte From Canon. Comment
  CHSC3577  Pentagramma triangularis Judy Lee Potter 1966-2-26 Butte On Lucky John Road, Paradise. Comment
  CHSC48080  Pentagramma triangularis Sharol Lindenstein 1989-4-11 44 Butte Upper Bidwell Park, 0.1 mi nw of Upper Park Rd., 2.7 mi e of jct of Upper Park Rd. and Wildwood Ave., e side of Chico. 79 Comment
  HSC23499  Pentagramma triangularis M. Gregg 1966-3-7 30 Butte On Humbug Rd. off the Skyway to the covered bridge, on hill directly behind the old covered bridge, about 9 mi. from CSC campus Comment
  CHSC27953  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1958 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
  CAS-BOT-BC77133  Pentagramma triangularis subsp. semipallida Lowell Ahart 1976-7-7 s.n. Butte Near Little North Fork of Feather River. 50 Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 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) west of Stirling City 628 Comment
  CHSC42645  Perideridia bacigalupii Vernon Oswald 1985-9-5 1938 Butte Black Bart Rd. 2.1 mi se of its western junction with Forbestown Rd. 662 Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  CHSC38743  Perideridia oregana Vernon Oswald 1983-6-9 655 Butte Upper Bidwell Park, Chico, near Yahi Trail 1400 ft e of Salmon Hole Parking Area. 170 Comment
  CHSC42757  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte On dry red soil in an idle rice field, east of the Western Pacific Railroad, south of Central House Road, about 1 1/2 miles north and 1 mile west of Honcut. 30 Comment
  CHSC42973  Persicaria lapathifolia Lowell Ahart 1987-7-3 5759 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
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Jan 9 2013
  CAS-BOT-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD99744  Persicaria maculosa J. M. Tucker 1953-8-28 2683 Butte Biggs Rice Experiment Station. Comment
  JEPS127591  Persicaria pensylvanica B. Castro with Margie Graham and Stephanie Chun 2009-7-1 1798 Butte Sacramento Valley. 10 air mi W of Gridley, 0.4 mi S of Gridley Road, off SE bank of Cherokee Canal 0.2 mi NE of southward bend in canal. Sanborn Slough 7.5' Quad. Comment
  CHSC108123  Persicaria punctata Lowell Ahart 2011-10-29 17724 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  JEPS120020  Persicaria punctata Lowell Ahart 2012-10-28 18523 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
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SJSU5411  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Honeyrun Rd between Chico & Paradise 487 Comment
  SBBG17322  Petrorhagia dubia M. Vincent 1962-4-17 201 Butte Pentz and Nelson Bar Rds, 5 mi S of Paradise Comment
  CHSC30888  Phacelia egena J. D. Jokerst 1979-4-6 1183 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  RSA0055024  Phacelia heterophylla var. virgata James R. Shevock 1972-5-19 1778 Butte Jarbo Pass, Highway 70, Feather River Canyon. 701 Comment
  CHSC98664  Phacelia purpusii B. Castro; L. P. Janeway 2005-8-1 1506 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On rocky NW-facing open serpentine slope. 768 Comment
  RSA152187  Phacelia purpusii Lincoln Constance, E. Moleseed, John Weiler 1960-6-12 3677 Butte 3 miles above junction of Highway 32 and Butte Meadows Road, 33 miles northeast of Chico. 1220 Comment
  CAS-BOT-BC134035  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek foothills Comment
  CHSC39116  Phacelia vallicola L. Ahart 1982-6-4 3534 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC39117  Phacelia vallicola R. A. Schlising; R. Banchero 1981-5-20 4060 Butte Lumpkin Ridge, e of village of Feather Falls. Comment
  CAS-BOT-BC250702  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 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
  CAS-BOT-BC250707  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CHSC2174  Phalaris paradoxa H. Silberman; D. Isaac 1949-5-19 Butte Grey Lodge State Game Refuge. 24 Comment
  CHSC49565  Phalaris paradoxa Vernon Oswald 1988-4-18 3272 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. On the edge of a rice field in the southeast part of the ranch. 45 Comment
  JEPS107748  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CHSC6622  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U on Chico State College campus. 60 Comment
  CHSC3201  Philadelphus lewisii Gerry Carrauthers 1966-4-18 113 Butte City of Chico at East Fifth and Olive Streets. Comment
  CHSC37552  Philadelphus lewisii T. B. Devine 1977-6-5 415 Butte 2.2 mi NE of Centerville. Comment
  CHSC4667  Phlox speciosa subsp. occidentalis R. Carter 1966-4-11 337 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds W of R.R. bridge over S Fork. 152 Comment
  CHSC60583  Phlox speciosa subsp. occidentalis Vernon H. Oswald; Lowell Ahart 1993-4-19 5283 Butte Rattlesnake Creek Trail on outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  CHSC113291  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-5-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 23 Comment
  CAS-BOT-BC141244  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte ca. 100 ft E of Pentz-Magalia Hwy., ca. 1 mi S of Kunkle Reservoir, ca. 3 mi S of Paradise 411 Comment
  RSA691014  Phoradendron villosum L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Lahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4.5 miles east of Manzanita Avenue, Chico. 183 Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  SEINET10931448  Physalis acutifolia Mary Susan Taylor 1977-10-10 Taylor 1507 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  JEPS95155  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  SEINET4890912  Phytolacca americana R. R. Halse 2006-8-2 6977 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  JEPS102439  Pilularia americana Lowell Ahart 2001-4-15 8727 Butte 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) SW of Gridley. 22 Comment
  CAS-BOT-BC76936  Pilularia americana John Thomas Howell; Gordon H. True 1967-5-7 42176 Butte Northwest outkirts of Oroville north of the Feather River. Comment
  SEINET10530356  Pilularia americana Mary Susan Taylor 1980-3-28 Taylor 2396 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC4586  Pinus sabiniana C. Glascock 1965-1-27 196 Butte 2 mi. e of Oroville at 2723 Oro-Quincy Hwy; ca. 30 ft. downslope from midpoint of driveway. Comment
  NY62742  Pinus sabiniana A. A. Heller 1913-4-7 10690 Butte Hills 2 miles north of Oroville Comment
  CHSC26445  Pittosporum tobira Pam Moyer 1971-10-1 25 Butte CSUC Campus. Bidwell Mansion front lawn. Comment
  CHSC116644  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  POM196508  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  UCR46079  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 152 Comment
  CHSC28996  Plagiobothrys fulvus var. campestris J. D. Jokerst 1980-3-12 473 Butte NE of Chico. 67 Comment
  SEINET6973518  Plagiobothrys fulvus var. campestris Lewis S. Rose 1931-4-12 s.n. Butte Sacramento Valleys and its bordering foothills. Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  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
  RSA178642  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte East of Chico near the Hooker Oak, Comment
  SEINET10837186  Plagiobothrys greenei Mary Susan Taylor 1975-4-29 Taylor 541 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CAS-BOT-BC228251  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  UC478472  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte near head South Willow Creek (Jonesville); head South Willow Creek, Jonesville 1700 Comment
  CHSC28997  Plagiobothrys nothofulvus J. D. Jokerst 1980-3-12 472 Butte Foothills NE of Chico. 67 Comment
  RSA718072  Plagiobothrys scouleri var. hispidulus L. Ahart 2006-7-16 13001 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CHSC87195  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC84252  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS104289  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-6-23 10309 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS107358  Plagiobothrys stipitatus var. micranthus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11665 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  RSA726683  Plagiobothrys stipitatus var. micranthus Richard Halse 2002-3-27 6156 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  UCD80162  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-12 SNFN 0077 c Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET516432  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-1 2228 Butte Large size plant, growing on damp to dry gravelly red soil on the bottom of a small wash in a farmed field, Peter Ahart Ranch, about 2 1/2 mi N and 1/2 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC75257  Plagiobothrys stipitatus var. stipitatus Jennifer Slater 1997-4-6 2 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC43553  Plagiobothrys tenellus Lowell Ahart 1978-4-19 1652 Butte Along the trail, about 1/2 mile south of Feather Falls, about 5 miles north of the town of Feather Falls. 548 Comment
  CHSC48343  Planodes virginica Vernon Oswald 1985-3-17 1685 Butte Peter Ahart Ranch ca. 1.5 mi n of Honcut. In pasture ca. 300 ft e of the home. 33 Comment
  HSC86822  Plantago coronopus Lisa Sedlacek 1978-4-18 15 Butte 25 yds. down from junction Hwy. 99 and Broyles Rd., NW corner of Butte County 61 Comment
  JEPS94139  Plantago coronopus Lowell Ahart 1998-6-9 7984 Butte ca. 7 mi. (air) n. Oroville (at cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  CHSC26726  Plantago elongata M. S. Taylor 1978-4-14 1550 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC4087  Plantago erecta Kath Sommarstrom 1967-4-1 14 Butte Found on bank to right side of Humbug Road, 2 mi west of covered bridge. 76 Comment
  CHSC52098  Plantago erecta R. J. Goedl 1979-4-16 19 Butte Ca. 3.5 mi e of Highway 99, 20 ft s of Skyway, e of Chico. 213 Comment
  POM61255  Plantago erecta Copeland 1903-4-10 3034 Butte Chico. Comment
  UC1125624  Plantago erecta C. G. Albertus 1933-5-29 5 Butte 1.5 mi n Wick; Chico Quad. 60 Comment
  UCD124427  Plantago erecta M. Jeanne Boze 1978-4-12 16 Butte ca. 3 miles east of Chico on Humboldt Road. 1 mile northeast of Bruce Road intersection. 106 Comment
  CHSC88146  Plantago lanceolata Lowell Ahart 2004-7-23 11303 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
  CHSC94585  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  JEPS115348  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS124275  Plantago major Lowell Ahart 2015-11-18 20663 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  UCD124385  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte on the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  SEINET10476447  Platanus occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5376 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CHSC10691  Platanus racemosa Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SD60213  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico. Comment
  UC726298  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  POM68797  Plectritis macrocera subsp. macrocera C. C. Bruce 1897-04 1882 Butte Little Chico. Comment
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  CHSC9340  Poa annua B. Anthony 1968-4-1 403 Butte Lawn at Vets Village, Chico State College. Comment
  SEINET3450767  Poa annua Unknown 2003-3-31 10031 Butte Oroville, Oroville, about 10 miles southwest, about 3/8 miles east of Riceton highway, about 20 yards north of Hamilton Road, about 50 yards east of the drain ditch, landplained rice field 20 Comment
  CHSC37277  Poa bulbosa M. S. Taylor 1982-5-2 4386 Butte N side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  SEINET10934988  Poa bulbosa Mary Susan Taylor 1982-5-2 Taylor 4386 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CAS-BOT-BC255064  Poa compressa John Thomas Howell 1973-7-9 49699 Butte Granite area near Bear Ranch Creek, Feather River Highway 457 Comment
  UC4609251  Poa compressa Lowell Ahart 1993-7-23 7094 Butte ca 6 air mi ne Feather Falls (w side of Fall River, ca 100 yds w of bridge across Fall River) 1036 Comment
  SEINET10901783  Poa gracillima Mary Susan Taylor 1980-6-14 Taylor 2877 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC255786  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico in the Sacramento Valley Comment
  SACT001941  Poa pratensis Herbert Copeland 1929-5-10 Butte In damp open places 1500.0 Comment
  CHSC38846  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-9 463 Butte Upper Bidwell Park, Chico, along the Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  LA12615  Poa pringlei E. B. Copeland; 1931-6-22 606 Butte Jonesville, at The Summit 609 Comment
  CHSC40460  Poa secunda subsp. secunda Lowell Ahart 1985-5-15 4996 Butte On the sides of a dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC47629  Poa secunda subsp. secunda Lowell Ahart 1977-6-16 1425 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  SEINET12319546  Pogogyne douglasii R. A. Schlising 1980-1 3589 Butte T23N R1W sec4, extreme N Butte County (Richardson Spgs. NW, 7.5' quad), * between Singer Creek and ? Comment
  CHSC31797  Pogogyne zizyphoroides L. Ahart 1974-4-24 431 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET7072553  Pogogyne zizyphoroides A. G. Vestal 1963-5-7 s.n. Butte About 1.7 miles west of Honcut on Ahart Road. Coordinate datum: NAD 27. UTM Zone 10, 627360mE, 4356415mN. Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  CHSC26716  Polanisia dodecandra subsp. trachysperma M. P. Hayes 1977-10-23 140 Butte Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC11948  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC46976  Polygala cornuta var. cornuta Vernon H. Oswald 1989-9-27 4017 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of the roadway which surrounds the perimeter of the lake. 777 Comment
  CHSC88089  Polygala cornuta var. cornuta R. D. Fischer 2004-4-17 174 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek w. of 10 Mile House Road where rd. and creek are closest. 198 Comment
  UC1594572  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  UC203665  Polygala cornuta var. cornuta A. A. Heller 1914-7-24 11624 Butte gravelly slopes near Forest Ranch; ; near Forest Ranch, Butte Co. 731 Comment
  SEINET6647276 Image available Polygonum alpinum E. B. Copeland 1930-1 s.n. Butte Jonesville 1500 Comment
  CHSC107246  Polygonum aviculare Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC83052  Polygonum aviculare Lowell Ahart 2002-10-17 9991 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CHSC39126  Polygonum bidwelliae R. A. Schlising 1980-5-26 3603 a Butte S of the village of Cohasset. Comment
  CAS-BOT-BC414364  Polygonum californicum Lowell Ahart 1988-5-12 5996 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  UCR66556  Polygonum davisiae H. F. Copeland 1928-8-29 0345 Butte Northern Sierra Nevada Mtns., neighborhood of Jonesville, summit of Humboldt Road 2134 Comment
  JEPS121919  Polygonum douglasii Lowell Ahart 2014-7-10 19631 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 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
  UC1563298  Polygonum lapathifolium unknown 1990-10-3 6613 Butte about 1/8 mi ne Canyon Creek Bridge across lake (below high water line of lake, n side of creek); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CAS-BOT-BC419809  Polygonum parryi Lowell Ahart 1980-7-4 2457 Butte Near Hurleton. 600 Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles northeast of Stirling City. 1371 Comment
  UC1101126  Polygonum persicaria Herbert L. Mason and Verne Grant 1946-9-4 13111 Butte West Gridley Rd 833 Canal Comment
  CHSC105684  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC39130  Polygonum polygaloides subsp. kelloggii Robert Schlising; R. Banchero 1980-6-2 3628 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  UC204575  Polygonum punctatum A. A. Heller 1914-7-16 11578 Butte hills 8 mi n Oroville Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  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
  CHSC105265  Polypogon maritimus Lowell Ahart 2010-6-20 16831 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC38852  Polypogon maritimus Vernon Oswald 1983-5-22 523 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  JEPS94905  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, at a poor dirt road, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC66177  Polypogon monspeliensis Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  SEINET10507586  Polypogon monspeliensis Lowell Ahart 1985-5-15 Ahart 4973 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. 503 Comment
  CHSC60944  Polystichum imbricans Lowell Ahart 1993-6-20 6994 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 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
  CAS-BOT-BC72295  Polystichum imbricans subsp. imbricans Lowell Ahart 1984-5-28 4648 Butte below a dirt road about 1 1/4 miles northeast of the West Branch Bridge, about 2 miles south of Old Yankee Hill 450 Comment
  CHSC50540  Polystichum lemmonii Vernon Oswald; Lowell Ahart 1990-6-20 4304 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1914 Comment
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC49685  Potamogeton crispus Vernon Oswald 1987-8-2 3173 Butte Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CHSC55813  Potamogeton diversifolius Vernon H. Oswald; Lowell Ahart 1991-8-28 4856 Butte Impoundment just south of the Clay Pit Area of the Oroville Wildlife Area, on the east side of Larkin Rd, ca. 2 miles south of Hwy 162, Thermalito. In a pond. 39 Comment
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  CHSC46884  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-4 3978 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 56 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CDA13900  Potentilla glandulosa subsp. glandulosa G. F. Hrusa, T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada; Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC38652  Poterium sanguisorba Vernon Oswald 1983-5-25 550 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Along an abandoned road. 134 Comment
  CHSC38647  Prunus dulcis Vernon Oswald 1983-3-5 113 Butte Upper Bidwell Park, Chico, between the Horse Arena and Lindo Channel. 79 Comment
  CAS-BOT-BC154609  Prunus subcordata Lowell Ahart 1990-3-19 6420 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  POM88382  Prunus virginiana var. demissa C. C. Bruce 1898-05 2478 Butte Little Chico Creek Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC92512  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  SFV11416  Pseudognaphalium luteoalbum M. L. Vincent 1965-4-16 621 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CAS-BOT-BC357589  Pseudognaphalium stramineum Lowell Ahart 1980-5-4 2184 Butte Thermalito 65 Comment
  CHSC21240  Pseudognaphalium thermale M. S. Taylor 1975-9-12 908 Butte Ca. 500 m w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  CAS-BOT-BC361741  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1980-5-4 2160 Butte Thermalito 65 Comment
  CHSC103718  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-14 16649 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west 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
  CAS-BOT-BC361826  Psilocarphus oregonus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC65895  Psilocarphus oregonus Vernon H. Oswald 1996-4-20 7406 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. Along the W end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  UCD135291  Psilocarphus oregonus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  CHSC33403  Pyrola dentata R. E. Preston 1981-7-8 24 Butte Ca. 0.8 km e of Humboldt Peak, ca. 5.5 km nne of Jonesville. 1952 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  UC474253  Pyrola picta H. F. Copeland 1938-8-14 489 Butte Jonesville above Jones Creek Comment
  UC474256  Pyrola picta H. F. Copeland 1930-8-26 Butte Jonesville, woods above hotel Jonesville Comment
  RSA0083380  Pyrola picta H. F. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CHSC43678  Quercus Vernon Oswald 1986-11-2 2290 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Upper Park Rd. at the first intermittent drainage w of Parking Area K at Bear Hole. 121 Comment
  CHSC8566  Quercus M. MacArthur 1968-6-13 365 Butte NW of EP Building, Chico State College campus. 60 Comment
  CHSC96810  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 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
  SEINET13953267 Image available Quercus dumosa A. A. Heller 1916-1 12649 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CHSC109218  Quercus durata B. Castro; L. P. Janeway 2004-6-13 1467 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  CAS-BOT-BC62795  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  CHSC8558  Quercus suber M. MacArthur 1968-6-12 322 Butte NE side of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC100496  Quercus wislizeni var. wislizeni Lowell Ahart; John Dittes 2008-11-14 15451 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  CHSC46842  Ranunculus aquatilis var. hispidulus L. V. Ritter 1969-5-5 259 Butte E shoe of Horseshoe Lake, Bidwell Park. Comment
  CDA24297  Ranunculus aquatilis var. subrigidus T. C. Fuller 1962-5-17 8719 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  JEPS127009  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SEINET10535966  Ranunculus canus Mary Susan Taylor Taylor 989 Butte Bidwell Park, Chico. Comment
  SEINET12094428  Ranunculus hebecarpus Unknown 1982-1 100 Butte Near Chico in Upper Bidwell Park, T22N, R2E, sec. 8 152 Comment
  CHSC115490  Ranunculus hystriculus L. P. Janeway 2015-2-18 11631 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC115433  Ranunculus muricatus Ariana Gehrig 2013-5-9 Butte City of Chico. Lawn on campus. 64 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  RSA517348  Ranunculus muricatus Barbara J. Ertter 1986-4-13 5888 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  SEINET12091617  Ranunculus occidentalis Unknown 1984-1 6 Butte ca 3/4 mi ne of Centenial and Manzanita avenues. Nw side of road. Chico Quadrangle 15'. NW corner 70 Comment
  CHSC3554  Ranunculus occidentalis var. occidentalis Gary Dutton 1966-2-28 103 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. CSC. Comment
  CHSC46848  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 249 Butte S part of county, ca. 1.5 mi s of Hurleton. Comment
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC115202  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte Located on the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Themalito Afterbay, about 1 mile southwest of Oroville Airport, about 6 miles (air) southwest of Oroville. Valley Grassland. 42 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CAS-BOT-BC74266  Raphanus sativus Lowell Ahart 1973-3-24 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC55826  Rhamnus Elmer I. Applegate 1932-4-12 7040 Butte East bank of the Sacramento River, about 2 miles west of Cana, northwest corner of Butte County Comment
  SFV10355  Rhamnus californica M. L. Vincent 1963-6-6 375 Butte Sierra Nevada Pentz Road, 5 miles south of Paradise. 330 Comment
  CHSC34038  Rhamnus ilicifolia L. Ahart 1981-7-7 2917 Butte On dry rocky granite soil along the edge of the rd near the rd to the Oak Grove Cemetary, ca. 1/4 mi s of the Oroville-Forbestown Rd on the Hurleton Swedes Flat Rd, w of Forbestown. 600 Comment
  UC725528  Rhamnus ilicifolia A. A. Heller 1939-4-10 15375 Butte grade above Rock Creek Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  UC175331  Rhamnus rubra A. A. Heller 1913-6-7 10790 Butte near Stirling 1036 Comment
  CHSC98893  Rhamnus tomentella subsp. tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north-northwest facing upper slope below North Rim Trail overlooking Sycamore Creek. 338 Comment
  CAS-BOT-BC168128  Rhus aromatica A. A. Heller 1915-3-19 11773 Butte Along Rock Creek 12 miles northeast of Chico Comment
  CHSC40098  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Forest near DeSabla. 853 Comment
  UC176366  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  CHSC96233  Romulea rosea var. australis R. Fischer 2006-4-26 999 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. Plants growing at southern end of reserve along Chico Canyon Road, on the roadbed and the eastern edge. Population 1 to 1.25 miles north of Bidwell Park boundary. 10609840E, 4409919N, Nad 27. 253 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CHSC113193  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC94178  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field. 31 Comment
  CHSC112733  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  CHSC94560  Rorippa curvisiliqua var. orientalis Lowell Ahart 2006-9-11 13279 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS114454  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 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
  CHSC35116  Rorippa nasturtium-aquaticum R. E. Preston 1981-8-31 144 Butte In spring; ca. 15 m s of park road, ca. 150 m w of Salmon Hole parking lot, Upper Bidwell Park, Chico. 125 Comment
  CHSC113373  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  JEPS103432  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  SEINET10483877  Rosa Mary Susan Taylor 1979-10-12 Taylor 2240 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
  CHSC103168  Rosa californica Lowell Ahart 2009-11-19 16542 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS120080  Rosa californica Lowell Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path, Lower Bidwell Park, Chico. Comment
  SEINET8723569 Image available Rosa californica H. S. Reed July 10 297 Butte Sacramento river five miles northwest of Chico, altitude ca. 190 feet, Butte County. 58 Comment
  CHSC65463  Rosa gymnocarpa Vernon Oswald 1985-6-10 1825 Butte 0.1 mi w of Hwy 32 on spur road 60G which is located 4.5 mi n of Platte Mtn. Lookout. On the edge of the road. 975 Comment
  UC1609469  Rosa pisocarpa subsp. ahartii Vernon H. Oswald and Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  CAS-BOT-BC148253  Rosa woodsii var. ultramontana A. A. Heller 1928-7-10 14654 Butte Wet meadows at Butte Meadow in the yellow pine belt. Comment
  CHSC78858  Rotala indica Lowell 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. 42 Comment
  JEPS120765  Rotala ramosior Lowell Ahart 2013-9-20 19059 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
  JEPS95941  Rotala ramosior Lowell Ahart 1999-8-13 8170 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC1191581  Rotala ramosior Herbert L. Mason, Verne Grant 1946-9-27 13134 Butte 3 mi w of Biggs Comment
  CHSC52469  Rubus armeniacus L. P. Janeway 1987-5-20 2073 Butte Along hwy 70 1.7 mi NE of Pulga bridge; at Poe Dam, N Fk Feather R. 472 Comment
  CAS-BOT-BC156608  Rubus bifrons Lowell Ahart 1984-6-10 4716 Butte About 1/2 mile south-east of the Forbestown Diversion Dam, north-east of Forbestown 450 Comment
  RSA719540  Rubus discolor Michael A. Vincent, K. Levings 2006-7-29 12886 Butte NE of Chico along Rte 32. Comment
  CAS-BOT-BC147106  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC102620  Rubus laciniatus Lowell Ahart 2009-7-9 16013 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
  NY43800  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  SEINET10483573  Rubus laciniatus Mary Susan Taylor 1980-5-8 Taylor 2606 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
  SEINET10483577  Rubus laciniatus Mary Susan Taylor 1980-5-27 Taylor 2649 A 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
  CHSC44425  Rubus leucodermis Lowell Ahart 1988-6-23 6075 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  SEINET10970329  Rubus leucodermis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5120 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
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  CHSC65433  Rubus pensilvanicus Vernon Oswald 1983-5-2 422 Butte Upper Bidwell Park, Chico, 50 ft s of Chico Creek and 500 ft e of the foot-bridge at the Golf Course. 91 Comment
  UCD89070  Rubus pensilvanicus Lindsay Clark 2008-5-30 BWP 19 Butte Bidwell Park in Chico, off of parking lot H (Day Camp), follow Yahi trail southwest. Next to creek. 88 Comment
  JEPS115605  Rubus ursinus Lowell Ahart 2009-5-23 15736 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west 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
  CHSC37136  Rumex acetosella L. Ahart 1982-5-28 3443 Butte Under a Digger Pine and near a small wash, e of North Honcut Creek, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  JEPS119634  Rumex conglomeratus Lowell Ahart 2012-6-14 18184 Butte On the north side of Big Chico Creek, near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC421614  Rumex crispus John Thomas Howell 1962-6-15 37476 Butte Magalia 731 Comment
  SEINET10838759  Rumex crispus Mary Susan Taylor 1975-8-31 Taylor 876 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC100897  Rumex salicifolius var. salicifolius R. A. Schlising; Lawrence Janeway 1988-8-2 4655 Butte Northern Butte County, north of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. 1139 Comment
  CHSC45580  Sagina apetala Lowell Ahart 1974-4-24 421 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC90917  Sagina apetala Lowell Ahart 2005-4-18 11744 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
  JEPS119540  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte East side of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC1212529  Sagina saginoides H. F. Copeland 1932-6-28 Butte vicinity of Jonesville (Lassen Nat'l Forest); Lassen Nat'l Forest Comment
  CAS-BOT-BC445663  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  CHSC116328  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte Bottom of a large canal, on both sides of Gilstrap Avenue, about 400 yards north of where Gilstrap Avenue makes a 'S' turn, about 2 miles (air) from the center of Gridley. 19 Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  SEINET10938868  Sagittaria sanfordii Mary Susan Taylor 1978-5-7 Taylor 1606 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UC2026859  Salix babylonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  UC600414  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville 1828 Comment
  SD926  Salix geyeriana E. B. Copeland 1931-6-10 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC104075  Salix hindsiana Lowell Ahart 1987-4-30 5491 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
  UC437331  Salix laevigata Mrs. R. M. Austin Apr. 1896 657 Butte Butte Creek Canyon Comment
  UC456789  Salix laevigata E. B. Copeland 1931-5-8 Butte 5-mile dam Chico Comment
  CAS-BOT-BC125174  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC125181  Salix lasiandra var. lasiandra Lowell Ahart 1982-5-8 3408 A Butte Near Forbestown Reservoir 800 Comment
  JEPS119598  Salix lasiolepis Lowell Ahart 2012-4-9 17827 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129579  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10704 Butte Hills, north side of the Feather River above Oroville Comment
  RSA4400  Salix lemmonii E. B. Copeland 1931-6-11 620 -a Butte Jonesville. Kirby's Meadow. 1750 Comment
  UC75007  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte banks of Butte Creek Chico Comment
  SEINET10537413  Salsola Mary Susan Taylor 1979-10-2 Taylor 2207 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  SD6666  Salvia sonomensis Mrs. R. M. Austin Butte Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 Comment
  CDA42912  Sambucus nigra subsp. caerulea L. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 12 & 13, Lower Bidwell Park, Chico. Comment
  RSA0036028  Sambucus nigra subsp. caerulea Lowell A. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC235068  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 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
  CHSC28972  Sanicula bipinnata J. D. Jokerst; M. S. Taylor 1980-2-24 457 Butte Hillside E of Richardson Springs ca 0.5 mi. 243 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  UC566789  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3713 Butte ne of Oroville (Table Mountain, Cherokee Mine); Table Mountain, Cherokee Mine Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  JEPS104026  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 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
  UC1532341  Sanicula tuberosa Vernon Oswald 1986-6-29 1988 Butte Rim Rd (Ponderosa Way) 3 mi N of Jarbo Gap on Hwy 70 868 Comment
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  SEINET10454585  Sanicula tuberosa Mary Susan Taylor 1978-7-19 Taylor 1775 A Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  POM219526  Sarcodes sanguinea John Copeland 1931-7-1 s.n. Butte Jonesville. 1550 Comment
  UC115020  Saxifraga oregana Mrs. R. M. Austin July, 1896 83 Butte Colby Comment
  UC1602227  Saxifraga oregana H. F. Copeland 1920-7-12 358 Butte Jonesville Comment
  CHSC39231  Scandix pecten-veneris M. S. Taylor; K. Tharp 1983-3-11 5225 Butte At jct of Bell Ranch Rd and Oroville-Quincy Hwy (162), ca. 1 mi sw of Berry Canyon School, s of Lake Madrone. Ca. 8 air mi ne of Oroville. Comment
  POM181779  Schoenoplectus acutus var. occidentalis H. F. Copeland 1923-6-4 354 Butte Nelson. Comment
  SEINET9318790  Schoenoplectus mucronatus Unknown 1996-9-5 13563 Butte Butte Comment
  SEINET10839824  Scirpus cernuus var. californicus Lowell Ahart 1984-5-12 Ahart 4605 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  UC1542874  Scirpus diffusus E. B. Copeland June 1931 Butte Jonesville Comment
  CHSC40416  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC57150  Scirpus microcarpus L. P. Janeway 1988-6-25 2890 Butte Ca 1/8 mi from Bull Hill Road up a small creek towards Bull Hill, 2.5 mi from Skyway. 1508 Comment
  CHSC57210  Scirpus microcarpus L. P. Janeway; R. A. Schlising 1988-7-16 3002 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  JEPS110323  Scirpus microcarpus Lowell Ahart 2006-7-25 13061 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
  CHSC34801  Scleranthus annuus subsp. annuus M. S. Taylor 1980-4-18 2520 Butte E side of Humbug Rd, ca. 2 mi ne of Centerville. On bluff. 487 Comment
  CAS-BOT-BC239963  Scribneria bolanderi Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC61550  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1609011  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte about 1 air mi nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC85910  Scutellaria californica L. P. Janeway; Gail Kuenster, Adam Henderson 2003-3-12 7739 Butte Northern High Sierra Nevada. Cool shady drainage about 35 m northeast of North Fork Feather River arm of Lake Oroville; 1.9 km north-northwest of mouth of French Creek. 290 Comment
  CHSC43849  Scutellaria siphocampyloides B. Castro 1987-5-18 108 Butte Approx. 9 mi ne of Chico ca 1/2 mi e of Hwy 32. 426 Comment
  CHSC799  Scutellaria siphocampyloides R. Carter 1964-6-12 121 Butte Ca. 24 mi. E of Oroville on Lower Forbestown Rd. 3 mi. N of Olive Hwy. on E side of road. 60 Comment
  JEPS102485  Secale cereale Lowell Ahart 2001-5-10 8741 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  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
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  JEPS113219  Selaginella hansenii Lowell Ahart 2007-2-24 13583 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  RSA590214  Selaginella hansenii Michael A. Vincent, Robert M. Rhode, Jim Anowden 1996-3-29 7225 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
  CHSC41991  Selaginella wallacei Lowell Ahart 1976-4-17 1083 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  CHSC86439  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-6-13 81 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on serpentine outcrop belonging to LNF. Site approx. 0.3 miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC363993  Senecio integerrimus var. major A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC49827  Senecio integerrimus var. major Vernon Oswald; Lowell Ahart 1990-4-9 4157 Butte Trail to Fall River near its junction with Feather Falls Trail, near the Overlook. All along the Feather Falls Trail. 621 Comment
  CHSC116206  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 Comment
  JEPS121978  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. Comment
  CHSC71634  Senecio triangularis Vernon H. Oswald; Lowell Ahart 1998-8-11 9464 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. Along the edge of the creek. 1396 Comment
  CDA8687  Senecio triangularis T. C. Fuller 1962-7-12 9168 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC113926  Senecio vulgaris Lowell Ahart 2014-4-16 19358 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
  UC2026877  Sequoiadendron giganteum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18009 Butte Southeast of the horse path, on the south side of the paved park road, south of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
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Jul 25 2018
  CHSC40469  Sericocarpus oregonensis Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  JEPS127628  Setaria parviflora B. Castro 2008-7-15 1758 Butte 2 mi W of Hwy 99 and 1 mi SE of Richvale, and NE corner of Cherokee Canal and Richvale Hwy. Comment
  CHSC40642  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte On the sides of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC34225  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70 (Feather River Hwy), ca. 4 air mi NW of Oroville. (center of sec 26). 91 Comment
  RSA754578  Sherardia arvensis L. Ahart 2009-4-17 15547 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12319558  Sherardia arvensis G. M. Grossberg 1978-1 7 Butte North Table Mountain, ca 0.5 mi NNE of Cherokee Road, 6 mi N of Oroville 396 Comment
  CHSC24891  Sidalcea asprella P. Laherty 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
  HSC85994  Sidalcea calycosa subsp. calycosa J. Hunter 1986-3-30 38 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC100865  Sidalcea gigantea B. Castro; David Toren 2005-7-21 1520 Butte Ca 9 air mi NE of Paradise, and 2.5 mi NE of Flea Mtn, at the crossing of Lockerman Ck by USFS Rd 24N13. Ca 200 ft from W edge of ck. 950 Comment
  CHSC52092  Sidalcea hartwegii N. Kvasnik 1980-4-20 16 Butte Covered Bridge. E side of creek, s of bridge. 91 Comment
  SEINET10937541  Sidalcea hartwegii Mary Susan Taylor 1980-4-27 Taylor 2570 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC26813  Sidalcea hirsuta 1978-5-7 1615 Butte Richvale vernal pool area, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  SEINET11971666  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-1 19536 Butte Oroville-Forbestown Rd, about 8 mi E of Oroville Comment
  CHSC38301  Silene antirrhina Vernon Oswald 1983-6-5 634 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CAS-BOT-BC384467  Silene antirrhina Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi. se of Paradise. NE of Kunkle Res. 500 Comment
  CAS-BOT-BC174848  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
  SEINET5337144  Silene californica R. T. Short 1959-4-11 13 Butte 15 miles east of Oroville on US 40. 549 Comment
  CHSC28491  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte Along trail to Humboldt Peak at Humboldt Summit. 2133 Comment
  CHSC44487  Silene gallica Lowell Ahart 1988-5-12 5988 Butte Pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD80220  Silene gallica CNPS SN Foothill Team 2005-5-4 SNFN 0201 d Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  CHSC31132  Silene laciniata subsp. californica Diane M. Reilly 1980-3-21 1 Butte On road cut, ne side of Dark Canyon Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 487 Comment
  UCD98984  Silene laciniata subsp. californica L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET3861585  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville.; 0 1550 Comment
  CHSC3759  Sinapis arvensis R. L. Adams 1964-4-12 74 Butte 4 mi. W. Chico, W. Sacramento Ave. and River Rd. on NE quarter. Comment
  CHSC35757  Sisymbrium orientale R. E. Preston 1982-6-9 299 Butte On w side of The Esplanade at bridge over Chico Creek, Chico. 59 Comment
  CHSC44521  Sisyrinchium bellum Lowell Ahart 1988-4-30 5971 Butte Near a small stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC426901  Sisyrinchium bellum E. B. Copeland 1930-8-3 Butte Jonesville 1500 Comment
  CHSC47069  Smilax californica R. A. Schlising 1988-4-24 4536 Butte N of Forest Ranch along Hwy 32. 975 Comment
  CDA42899  Solanum americanum L. Ahart 2012-6-14 18185 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC113978  Solanum americanum Lowell Ahart 2014-11-17 19911 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CHSC109076  Solanum jasminoides Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC76963  Solanum parishii Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  NY821149  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville Comment
  SEINET10546685  Solanum parishii Mary Susan Taylor 1975-4-25 Taylor 492 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  UC104231  Solanum umbelliferum Mrs. R. M. Austin May 1896 140 Butte Little Chico Creek Comment
  SEINET260320  Solidago californica Lowell Ahart 1988-7-24 6130 Butte Ca 1/20 mi NE of the intersection of Ponderosa Way and Lower Forbestown Rd W of Sunset Hill 732 Comment
  CAS-BOT-BC365381  Solidago elongata A. A. Heller 1914-8-6 11639 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CDA13256  Sorbus scopulina var. cascadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13107 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10483617  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3706 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  CHSC112731  Sorghum halepense Lowell Ahart 2013-10-12 19110 Butte On the west side of Upper Palermo Road, about 250 yards south of the intersection, about 2 miles (air) northeast of Palermo. 51 Comment
  CHSC51954  Sparganium emersum subsp. emersum L. P. Janeway 1987-6-19 2248 Butte Mdw on Pinkard Cr between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  RSA0097920  Spergularia bocconi L. Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards SE of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC42488  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC24504  Spiraea douglasii M. S. Taylor 1976-6-28 1163 Butte Along w bank of Butte Creek, ca. 25 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  JEPS110088  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  UC398924  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  SEINET10483632  Spiraea prunifolia Mary Susan Taylor Taylor 444 Butte Campus of the California State University, Chico. 61 Comment
  SEINET13948162 Image available Stachys A. A. Heller 1915-1 11907 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC43640  Stachys ajugoides var. rigida B. Castro 1987-5-16 90 Butte On narrow ridge just e of Cohasset Hwy, 9.5 mi by road from East Ave. in Chico. 539 Comment
  POM17346  Stachys emersonii A. A. Heller, H. E. Brown, A. H. Heller 1902-5-10 5521 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC38483  Stachys pycnantha Vernon Oswald 1983-8-9 974 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  CHSC52076  Stachys pycnantha B. Castro 1988-6-5 261 Butte Upper Little Chico Ck Cyn. 243 Comment
  POM183148  Stachys rigida subsp. rivularis H. F. Copeland 1930-7-26 1311 Butte Neighborhood of Jonesville, beside Bute Creek, near mouth of Scotch-John Creek. Comment
  CHSC13930  Stachys stricta M. S. Taylor 1974-9-14 319 Butte Ca. 1/2 mi n of Upper Bidwell Park Rd, and Alligator Hole, in Upper Bidwell Park on w edge of burn. Comment
  UC1609008  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  UC1609330  Stellaria crispa Lowell Ahart 1993-10-3 7268 Butte about 2 mi ne Coyote Gap (w branch of Wildcat Creek, on the s side) 1402 Comment
  JEPS119897  Stellaria media Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18112 Butte On the north side of Big Chico Creek, along the horse trail, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  CHSC45565  Stellaria nitens Lowell Ahart 1975-3-23 714 Butte Near 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
  CHSC72744  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
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  CAS-BOT-BC375764  Stephanomeria virgata Lowell Ahart 1980-7-20 2470 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  SEINET10606024  Stipa columbiana Mary Susan Taylor 1982-5-2 Taylor 4395 Butte T23N R5E ne 1/4 ne 1/4 sec 6. Pulga SW quad. Pulga serpentine area on n side of Hwy 70 at Pulga bridge, ca. 20 mi. ne of Oroville.With Silene gallica, Claytonia parviflora, Potentilla glandulosa. 488 Comment
  CHSC109681  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  HSC103798  Streptanthus L. Ahart 2006-7-16 12958 Butte North side of Humboldt Road, ~1.5 mi. air miles SW of Butte Meadows. 1436 Comment
  CHSC33178  Streptanthus polygaloides R. E. Preston 1981-6-1 75 Butte Ca. 2 km sse of Forks of Butte. 780 Comment
  CHSC95057  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  JEPS110269  Streptanthus polygaloides Lowell Ahart 2006-6-9 12653 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  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-BC87515  Streptanthus tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Oroville Ranger Station. Bald Rock Compartment. Upper end of Galen Ridge. 1036 Comment
  UC1609059  Streptanthus tortuosus Lowell Ahart 1993-6-20 6990 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD116316  Streptanthus tortuosus R. E. Preston 1996-5-22 938 Butte along Highway 70, 0.1 mile west of access to Cresta Powerhouse. 457 Comment
  CHSC103935  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2010-5-16 16695 Butte Basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC93504  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  SEINET10940278  Styrax officinalis var. fulvescens Mary Susan Taylor 1978-7-21 Taylor 1837 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  UCD67369  Styrax redivivus Leslie Goldberg 1992-5-16 17 Butte Pulga, side of Road along north fork Feather River. Comment
  CHSC47408  Swertia albicaulis var. nitida Lowell Ahart 1979-5-29 1902 Butte Along the edges of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC102625  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 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
  CAS-BOT-BC99037  Symphyotrichum cusickii Lowell Ahart 1981-9-18 3179 Butte Sierra Nevada - Arch Rock Tunnel, Hwy. 70 550 Comment
  CAS-BOT-BC99041  Symphyotrichum cusickii Alice Eastwood 1912-8-22 1918 Butte Battle Creek Meadows Comment
  CHSC69673  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-29 3159 Butte South side of Humbug Rd. just E of Chaparral Guard Station, ca. 1.5 mi (air) WNW of Philbrook Reservoir. 1554 Comment
  JEPS108934  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CAS-BOT-BC98373  Symphyotrichum subulatum var. parviflorum Forman T. McLean 1921-9-29 22 Butte Rice fields at Chico. Comment
  CAS-BOT-BC221935  Taeniatherum caput-medusae John Thomas Howell 1967-6-22 42628 Butte Magalia 701 Comment
  CHSC112249  Tamarix parviflora Lowell Ahart 2013-4-20 18547 Butte In Wilson Creek, about 40 yard southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 mile (air) northeast of Honcut. 49 Comment
  CHSC113661  Tanacetum parthenium L. P. Janeway 2014-5-29 11278 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC43000  Tanacetum vulgare Lowell Ahart 1987-7-17 5825 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC19940  Taraxacum officinale M. S. Taylor 1975-3-25 430 Butte Abundant at 1456 Arcadian, Chico. Comment
  CHSC46339  Taraxacum officinale Lowell Ahart 1989-5-29 6318 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  SEINET10474041  Taraxacum officinale Mary Susan Taylor 1978-7-19 Taylor 1759 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  SEINET10471634  Taxus brevifolia Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4460 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  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
  CAS-BOT-BC445890  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Mosquito creek between Appleton