Search Results — 2000 specimen records retrieved (1604 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  CHSC109781  Abutilon theophrasti Lowell Ahart 2012-10-20 18485 Butte On the north side of the sidewalk, about 50 yards west of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC331602  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC331605  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canon of Big Chico creek along the stream. Comment
  CHSC2393  Acer macrophyllum R. Carter 1965-3-15 167 Butte Tree found along W side of Oroville-Forbestown Rd. .5 mi. E of intersection of Oroville Forbestown Rd. and Lumpkin Rd., Butte Co. 441 Comment
  CHSC5948  Acer negundo var. californicum M. MacArthur 1968-6-18 206 Butte SE side of Big Chico Creek, ca. 30 ft. N of Dining Hall, Chico State College campus. 60 Comment
  CHSC109627  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC21748  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC104816  Achillea millefolium Lowell Ahart 2010-6-12 16792 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico. 349 Comment
  UCD128302  Achillea millefolium L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  POM289124  Achillea millefolium Lyman Benson 1932-7-28 3961 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  UC1594726  Achnatherum occidentale subsp. californicum Lowell Ahart 1992-7-26 6843 Butte 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain; w of small stream) 1767 Comment
  UC1609076  Achnatherum occidentale subsp. californicum Lowell Ahart 1993-6-26 7019 Butte 1 mi w Lost Creek Reservoir (e side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC107591  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  CHSC56744  Achyrachaena mollis J. D. Jokerst 1980-3-26 Butte East side of Chico; 100m northeast of junction of Bruce Road and Skyway. Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CAS-BOT-BC29950  Achyrachaena mollis Lowell Ahart 1980-5-4 2154 Butte near Thermalito 19 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CHSC100477  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2008-11-14 15454 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA0116257  Acmispon americanus var. americanus Lowell A. Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 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
  CHSC2923  Acmispon brachycarpus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 457 Comment
  RSA0037018  Acmispon nevadensis var. nevadensis Lowell A. Ahart 2013-11-17 19269 Butte About 60 yards east 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
  CHSC38499  Acmispon wrangelianus Vernon Oswald 1983-4-9 297 Butte Upper Bidwell Park, Chico, at about 500 ft level on the north slope 300 ft w of the power lines. 152 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC391374  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC46587  Aconitum columbianum var. columbianum V. Oswald; L. Ahart 1989-7-21 3878 Butte Middle branch of upper Butte Creek, ca. 0.8 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. 1828 Comment
  SEINET10839582  Adiantum capillus-veneris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4236 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 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
  RSA716145  Aegilops cylindrica L. Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 823 Comment
  SEINET12236158  Aesculus californica Unknown 1978-1 18 Butte Cherokee quadrangle, Upper Miocene Canal 448 Comment
  CAS-BOT-BC29495  Agoseris Clare B. Hardham 1978-4-17 21564 Butte Humbery Road north of Paradise 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
  SEINET3450923  Agoseris heterophylla Unknown 2003-4-10 10053 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  RSA21543  Agoseris retrorsa C. B. Wolf 1937-5-18 8729 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC41978  Agrostis avenacea Lowell Ahart 1986-11-14 5468 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
  UCD51814  Agrostis avenacea Bill B. Fischer 1977-6-1 s.n. Butte Biggs Rice Exper. Sta. Comment
  SEINET10753214  Agrostis avenacea Lawrence P. Janeway 1991-6-7 Janeway 3991 Butte Honcut quad T18N, R4E, SE 1/4 of sec. 33. Ca. 0.8 mi E of Palermo-Honcut Road, ca. 5.1 mi S of Palermo. Disturbed annual grassland (plowed, many cattle in spring). 38 Comment
  CDA28124  Agrostis elliottiana L. Ahart 2000-4-16 8358 Butte On the N and S side of the access road to the boat ramp at the Thermalito Afterbay, W of LArkin Rd, ~ 1.25 mi S of the Oroville Airport, ~ 5 mi (air) SW of Oroville. Comment
  JEPS98367  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte 13 air miles NE of Oroville (N side of Bean Creek Road, about 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  CAS-BOT-BC127370  Agrostis exarata John Thomas Howell 1973-7-9 49692 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CHSC111735  Agrostis exarata Lowell Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell park, Chico. 62 Comment
  UC1609047  Agrostis exarata Lowell Ahart 1993-7-23 7092 Butte about 6 air mi ne Feather Falls (on the w side of Fall River, about 100 yds w of the bridge across Fall River) 1036 Comment
  UC600602  Agrostis exarata H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC139719  Agrostis gigantea Lowell Ahart 1987-6-9 5731 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC46689  Agrostis idahoensis V. Oswald; L. Ahart 1989-8-15 3944 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC64251  Agrostis idahoensis S. C. Morey 1983-8-1 648 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS110248  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  CAS-BOT-BC139080  Agrostis pallens Lowell Ahart 1980-7-29 2494 Butte Along Swedes Flat Road. 320 Comment
  CHSC107924  Agrostis pallens L. P. Janeway 2011-7-18 10516 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.3 km northeast of the trailhead, 1.1 air km south-southeast of Bald Rock Dome. Along top of northeast-trending ridge, often abundant along edges of the trail. 725 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  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
  CHSC105681  Agrostis variabilis Lowell Ahart 2010-9-21 17220 Butte Open meadow-like area, near a poor camp, 30 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
  CHSC8193  Aira caryophyllea B. Hamilton 1969-3-21 8 Butte Found in Humboldt Rd and Flume Street near creek. Comment
  CAS-BOT-BC138413  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2174 Butte Thermalito. 65 Comment
  RSA0058867  Albizia julibrissin Lowell A. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  CHSC49466  Alisma triviale Vernon Oswald 1987-6-15 3000 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  SEINET10465410  Alisma triviale Mary Susan Taylor 1979-11-11 Taylor 2285 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  SEINET10839999  Alisma triviale Mary Susan Taylor 1975-10-3 Taylor 922 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  UCD137971  Alisma triviale E. M. Johnston 1915-1 W 144 J Butte Biggs Comment
  SBBG40363  Allium amplectens J. Ingram 1960-4-6 299 Butte Neal Rd, ca. 6 mi S of Paradise Comment
  SEINET12048529  Allium amplectens E. J. Baker 1984-1 7 Butte N side of Humboldt Rd., ca 5 yds N of road, .2 mi E of intersection with Stinson Canyon Rd 58 Comment
  SEINET10472035  Allium campanulatum Mary Susan Taylor 1980-5-24 Taylor 2744 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  SEINET194962  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Table Mountain, north of Oroville. Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  UCD138462  Allium cratericola C. D. Snider 1975-4-20 25 Butte Table Mountain: 7 mi. S of Hwy 70, Cherokee Road 5 mi S of Cherokee. 0.5 mi NW of road. 381 Comment
  CHSC62600  Allium jepsonii B. Castro 1993-7-13 487 Butte Ca. 2.5 mi SSW of Big Bar Mtn, on gentle SSE-facing slope on the N side of USFS rd 22N84. 944 Comment
  CHSC98392  Allium jepsonii Dean Wm. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest road 23N06B under the electrical transmission line. 899 Comment
  CHSC46524  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Near the edge of Ponderosa Way, about 2 miles south of Ponderosa Dam, north-west of Forbestown. 548 Comment
  RSA32794  Allium membranaceum A. A. Heller 1938-5-28 15113 Butte Along the Feather River Highway east side of Jarboe Pass, 22 miles from Oroville. 610 Comment
  CHSC101188  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2009-4-18 9730 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 758 Comment
  SEINET10471990  Allium peninsulare Lowell Ahart 1985-5-15 Ahart 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CAS-BOT-BC132070  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. SE. of Oroville on road to Wyandotte 121 Comment
  UC843417  Allium platycaule A. A. Heller 1915-6-16 12024 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  SEINET10471993  Allium platycaule Mary Susan Taylor 1978-7-18 Taylor 1709 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CAS-BOT-BC476715  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CHSC63542  Allophyllum divaricatum Vernon H. Oswald 1994-4-14 6108 Butte Old railroad grade along the N. Fork Feather River just E of Chino Creek, E of Poe Powerhouse. 301 Comment
  SD7682  Allophyllum integrifolium Daniel Cleveland Jun 1882 Butte Sutten House Comment
  CHSC99661  Alnus incana subsp. tenuifolia H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CDA42995  Alopecurus carolinianus L. Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. Comment
  SEINET3450790  Alopecurus carolinianus Unknown 2003-3-31 10030 Butte Oroville, Oroville, about 10 miles southwest, about 3/8 miles east of Riceton highway, about 20 yards north of Hamilton Road, about 50 yards east of the drain ditch, landplained rice field 20 Comment
  SEINET10790510  Alopecurus carolinianus Lowell Ahart 1990-4-15 Ahart 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S6. Foothill woodland (destroyed). Carolina Foxtail. 290 Comment
  CHSC29717  Alopecurus saccatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 427 Butte Top of North Table Mt, ca 1.0 mi n of jct of e edge of Mt and Cherokee Rd. 381 Comment
  HSC86000  Alopecurus saccatus John E. Hunter 1986-3-30 41 Butte Ca. 1 km E Chico, 50 m S Hwy. 32. 75 Comment
  CHSC102990  Amaranthus albus Lowell Ahart 2009-8-13 16273 Butte In the channel about about 100 yards east of the diversion structure that controls Mud Creek and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC116004  Amaranthus albus Lowell Ahart 2015-10-9 20540 Butte West edge of Bull Hill road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC47964  Amaranthus deflexus Vernon Oswald 1983-10-10 1062 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. The Indian Fishery at the jct. Of W. Sacramento Ave and River Rd. Comment
  RSA702776  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico 58 Comment
  CHSC85442  Amaranthus retroflexus R. D. Fischer 2003-10-25 13 Butte Chico. Located in northeast corner of town on the west side of Ceanothus Ave, cross street Brenni. Along drainage channel. 70 Comment
  CDA3283  Amaranthus rudis L. Ahart 1999-9-21 8267 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC27707  Amelanchier pallida Robert A. Schlising; Marc P. Hayes 1978-6-24 3291 Butte Probably just inside Butte County line on summit of Humboldt Peak. 2133 Comment
  SBBG120071  Ammannia coccinea 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
  CAS-BOT-BC213950  Amsinckia John Thomas Howell 1976-4-2 51552 Butte About 2 miles southeast of Chico 60 Comment
  CHSC40547  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  CHSC100976  Amsinckia intermedia L. P. Janeway 2008-3-18 9231 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 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
  CAS-BOT-BC26968  Amsinckia verna Amos Arthur Heller 1914-4-21 11310 Butte Chico Comment
  CHSC116985  Anagallis arvensis Lowell Ahart 2016-6-4 20937 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
  CHSC1388  Anagallis arvensis M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC45415  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservoir, about 2 1/4 miles north-west of Strawberry Valley. 1005 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC113676  Anisocarpus madioides L. P. Janeway 2014-5-29 11275 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
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  SEINET10832445  Antirrhinum breweri Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4174 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC75987  Antirrhinum cornutum L. P. Janeway 1999-7-17 6503 Butte Slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  SEINET10964553  Antirrhinum cornutum Mary Susan Taylor 1975-10-3 Taylor 937 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
  CHSC51920  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1987-5-20 2071 Butte Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  CHSC42213  Aphanes occidentalis L. P. Janeway; C. A. Janeway 1987-3-7 1953 Butte In Bidwell Park, Chico. Along North Rim Tr north-west of Horseshoe Lake. 144 Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  UC118801  Aquilegia formosa Mrs. R. M. Austin 1890-1 478 Butte Colby Comment
  CHSC52194  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 299 Butte E part of county, NW of Brush Creek. 914 Comment
  SEINET10480703  Arabis Mary Susan Taylor, K. Marsh 1974-3-16 Taylor 82 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Associates: Dudleya. Comment
  UC600707  Arabis rectissima var. rectissima H. F. Copeland 1931-6-10 1518 Butte gulch draining into Colby Canyon Jonesville 1524 Comment
  CHSC39785  Arbutus menziesii Eloise Gallatin 1935-5-19 Butte Lake Madrone. Comment
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  CAS-BOT-BC407686  Arceuthobium americanum Vernon Oswald; Lowell Ahart 1987-7-1 3077 Butte Cluster of 3 snow lakes ca. 3 mi. S of Humbug Summit, 0.5 miles W of the Butte-Plumas county line, ca. 5.5 mi. SE of Jonesville 1935 Comment
  RSA629063  Arctostaphylos Jon E. Keeley 1983-6-27 7817 Butte Highway 70 and Magolia Pentz Road. Comment
  LA42190  Arctostaphylos manzanita H. F. Copeland; 1932-6-24 A 8 Butte Humboldt Grade, about 12 mi. from Chico Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 Comment
  CHSC585  Arctostaphylos manzanita subsp. manzanita L. Stone 1930-4-6 Butte Near Forest Ranch. 548 Comment
  JEPS119572  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  OBI69253  Arctostaphylos manzanita subsp. manzanita Kari Fisher, Bill Fisher 2000-11-11 57 Butte Bidwell Park, along Chico Creek, close to golf course. 84 Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  RSA31998  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC726129  Arctostaphylos mewukka A. A. Heller 1942-1-4 16348 Butte Neal Rd w Optimo Lodge Comment
  UC726678  Arctostaphylos mewukka A. A. Heller 1942-2-7 16361 Butte along Neal Rd 3 mi below Paradise Comment
  CHSC109113  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-1-12 17735 Butte Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 45 Comment
  CAS-BOT-BC38565  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  CHSC108747  Arctostaphylos mewukka subsp. truei B. Castro; L. P. Janeway 2002-7-7 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). 1295 Comment
  CHSC42014  Arctostaphylos mewukka subsp. truei Lowell Ahart 1976-2-19 1012 Butte Near Ponderosa Way, about 3 mi S of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi NW of Forbestown. 609 Comment
  POM209917  Arctostaphylos patula H. F. Copeland 1932-6-29 A- 7 Butte The Summit, Jonesville. Comment
  RSA121220  Arctostaphylos patula C. G. Albertus 1933-7-26 53 Butte 1/4 mi. S. of Barnum Mill. 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
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  RSA795338  Arctostaphylos viscida subsp. viscida L. Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  UC1121413  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-7-20 117 Butte 2 1/2 mi w Nimshew; Chico Quadrangle Comment
  SEINET10512686  Aristida oligantha Edwin B. Copel 1903-7-27 Copeland 3488 Butte Chico. on bank of sloughs. Comment
  CHSC49508  Aristida ternipes var. hamulosa Vernon Oswald 1985-6-10 1826 Butte Hwy 32 3.1 mi e of Hwy 99. 164 Comment
  HSC86841  Aristolochia californica L. P. Branham 1975-4-3 6 Butte 10 m S of Humbug Rd., .2 mi. E of junction of Honey Run Rd. and Humbug Rd., 7 mi. SE of Chico 110 Comment
  SEINET10475905  Aristolochia californica Mary Susan Taylor 1981-3-16 Taylor 3407 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UC573399  Arnica dealbata P. L. Johannsen 1936-7-16 928 Butte Bolt Creek Lassen National Forest, Paynes Creek Quad. 1432 Comment
  UCD129132  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville. 1600 Comment
  CAS-BOT-BC90285  Artemisia douglasiana A. A. Heller 1928-6-20 14693 Butte Butte Meadows, along Butte Creek Comment
  SEINET10474107  Artemisia douglasiana Lowell Ahart 1990-10-3 Ahart 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CAS-BOT-BC400642  Asarum hartwegii Mrs. C. C. Bruce 1898-6-1 2423 Butte Day Hill Comment
  SEINET10475949  Asarum hartwegii Mary Susan Taylor 1980-3-8 Taylor 2372 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC11078  Asclepias cordifolia Lowell Ahart 1968-4-20 Butte Two miles N.E. of Honcut. 60 Comment
  JEPS49973  Asclepias fascicularis H. A. Dutton 1921-1-1 Butte e Chico (Hooker Oak) Comment
  CHSC4050  Aspidotis californica J. W. Cherry 1967-3-23 Butte Along Big Chico Creek, directly south of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  LA210509  Aster alpigenus var. andersonii E. B. Copeland; 1930-7-26 486 Butte Jonesville 1550.0 Comment
  CHSC62550  Astragalus gambelianus L. P. Janeway 1993-5-2 4333 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  CHSC90942  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  UC176262  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte hills six mi n Oroville; n of Oroville Comment
  CAS-BOT-BC192803  Astragalus pauperculus Lowell Ahart 1967-4-12 s.n. Butte Near Forest Ranch on highway 32 400 Comment
  CHSC61623  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte About 1 mile east of Snow Mountain. On the north side of the ridge. 2072 Comment
  UC1594560  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  UC855593  Athysanus pusillus A. A. Heller 1915-2-26 17765 Butte 6 mi e of Chico (near Hog Springs) Comment
  CAS-BOT-BC168562  Atriplex cordulata Lowell Ahart 1982-10-11 3861 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  JEPS108754  Atriplex prostrata Lowell Ahart 2006-10-8 13431 Butte Mud flat, 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
  CAS-BOT-BC176602  Atriplex serenana var. serenana Lowell Ahart 1981-9-10 3145 Butte Gray Lodge, SW of Gridley 35 Comment
  CDA23332  Atriplex triangularis L. Ahart 2006-10-8 13431 Butte 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. Comment
  JEPS117938  Avena barbata L. P. Janeway 2008-4-2 9246 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC36303  Azolla filiculoides M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4370 Butte Ca. 1/2 mi s of HQ on Graylodge Waterfowl Refuge, ca. 12 mi sw of Gridley. 19 Comment
  JEPS111348  Azolla filiculoides R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. 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
  CHSC66661  Baccharis douglasii Vernon H. Oswald 1996-7-17 8069 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CAS-BOT-BC98621  Baccharis pilularis unspecified 1929-11-1 s.n. Butte Cultivated at Chico U.S. Experimental Station Comment
  CDA10378  Baccharis pilularis L. Ahart 2000-11-4 8715 Butte On the east side of Highway 70, about 50 yards south of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. Comment
  JEPS87563  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte about 3 air mi w of Forbestown (on n side of Forbestown Road, about 200 yards e of the intersection of Black Bart Road and Forbestown Road); Forbestown Road 609 Comment
  CHSC41880  Baccharis pilularis subsp. consanguinea Lowell Ahart 1986-10-16 5403 Butte About 1 mile southwest of the Ponderosa Dam, about 3 miles northwest of Forbestown. 457 Comment
  CHSC279  Baccharis salicifolia B. Richardson 1929-4-18 Butte Near Chico. Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  CAS-BOT-BC16377  Barbarea orthoceras Lowell Ahart 1987-5-6 5565 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CDA36621  Bergia texana L. Ahart 2006-8-5 13083 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
  CHSC112540  Bergia texana B. Castro; Andy Rogers 2014-7-15 2032 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 0.4 mi downstream (W) of its crossing under the Cohasset Hwy bridge. In central channel excavated in a 2010 sediment removal project. 54 Comment
  RSA0036436  Betula Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC72247  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  HSC97042  Bidens frondosa L. Ahart 2006-9-11 13274 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  JEPS120603  Bidens frondosa Lowell Ahart 2013-11-17 19259 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC93964  Bistorta bistortoides R. D. Fischer 2004-6-20 759 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected from wet portion of Chico Meadows north of pond. 1371 Comment
  UCD73334  Blennosperma nanum Chuck Hughes 2008-3-26 25 Butte North Table Mountain. 396 Comment
  HSC23358  Blennosperma nanum var. nanum L. Walk 1971-3-14 2 Butte E side of Cherokee Rd., ca. 0.7 mile S of Oregon City Junction and ca. 50 yards from the road 610 Comment
  CHSC36679  Boechera arcuata R. E. Preston 1982-4-29 274 Butte At edge of trail to Bear Ranch Creek falls, s side of Hwy 70, ca. 100 yds sw of PG and E rest stop. 487 Comment
  CAS-BOT-BC14291  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  CAS-BOT-BC14300  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC31683  Bolboschoenus glaucus L. Ahart 1972-6-20 113 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CAS-BOT-BC417633  Boykinia major A. A. Heller 1928-7-10 I 4662 Butte Wet stream banks at Butte Meadows Comment
  JEPS87438  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte about 6 (air) mi ne Feather Falls (on a steep bank along Fall River, about 200 yards w of the bridge across Fall River); along Fall River, ne of Feather Falls 1036 Comment
  CAS-BOT-BC145681  Brachypodium distachyon John Thomas Howell 1959-9-20 34691 Butte Sierra Nevada. 7 miles northeast of Oroville on Feather River Highway. Comment
  JEPS94325  Brachypodium distachyon Lowell Ahart 1997-5-18 7740 Butte low water crossing Clear Creek, Butte Junior College, s of the hay barn Clear Creek; , Butte Junior College 76 Comment
  JEPS98558  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10661802  Brachypodium distachyon Lowell Ahart 1987-5-9 Ahart 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 305 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CAS-BOT-BC30308  Brassica nigra Lowell Ahart 1982-3-13 3252 Butte About 12 miles southwest of Gridley. Along the edge of the dirt road to the Gray Lodge Headquarters. 35 Comment
  CHSC113308  Brassica rapa Lowell Ahart 2014-4-16 19359 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC4029  Brassica rapa Sadie Gualtieri 1967-3-13 Butte Collected: Chico State College in a field parking lot behind Humanities Building on corner 2nd. St., N. side. Comment
  CAS-BOT-BC36722  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte East of the Feather River, about 3 miles east of Gridley. 28 Comment
  CHSC6716  Briza minor V. Hagaman 1968-4-19 479 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  JEPS116080  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  UCD57483  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles N of Oroville. Comment
  CHSC2935  Brodiaea californica W. Fitzwater 1958-4-29 Butte On Shasta Hwy. 4 mi. N of Chico. Comment
  UC143058  Brodiaea californica var. californica Mrs. R. M. Austin May 1896 45 Butte Iron Canyon Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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Jun 17 2014
  UC768717  Brodiaea coronaria subsp. coronaria R. F. Hoover 1937-5-19 2246 Butte 10 mi nw Chico Comment
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Jun 17 2014
  CHSC38765  Brodiaea elegans Vernon Oswald 1983-5-21 511 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft w of the power lines. 231 Comment
  CAS-BOT-BC483077  Brodiaea elegans subsp. elegans James McMurphy 1914-6-14 s.n. Butte Wallace Comment
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  JEPS107547  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  SEINET10533836  Brodiaea minor A. Arthur Heller 1902-5-10 Heller 5524 Butte Berry Canyon (Near Clear Creek). From Type locality. Comment
  SEINET10971334  Brodiaea minor Mary Susan Taylor 1980-5-31 Taylor 2761 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  UC3332  Brodiaea minor Carl Purdy 1821-1 Butte Comment
  UC1075908  Brodiaea nana E. K. Balls and L. W. Lenz 1955-5-13 20483 Butte 10.8 mi n Oroville (on road to Paradise) 121 Comment
  CAS-BOT-BC484574  Brodiaea purdyi Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  SEINET10833791  Brodiaea purdyi A. Arthur Heller 1941-5-24 Heller 16151 Butte Rather plentiful in thin clay soil overlying flat volcanic rocks on the Clark Road, 2 miles below Paradise Oak Belt of the Upper Sonoran Life Zone. Comment
  CHSC92936  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  UCD139163  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte on the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut about 12 miles southeast of Oroville. 54 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  RSA700275  Bromus carinatus L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1913 Comment
  CHSC6676  Bromus catharticus Marilyn Lee 1968-4-16 174 Butte 1046 1/2 W. 4th St., Chico. Comment
  JEPS103569  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On 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
  JEPS115992  Bromus catharticus Lowell Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC84277  Bromus commutatus Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CAS-BOT-BC155464  Bromus hordeaceus Javier Penalosa 1962-6-18 2464 Butte Near Confluence of French and Peavine Creeks. 609 Comment
  CHSC101667  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
  CHSC42846  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC96549  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  SEINET10527855  Bromus hordeaceus subsp. hordeaceus R. M. Austin Austin s.n. Butte Comment
  CHSC49513  Bromus inermis subsp. inermis Vernon Oswald 1987-6-23 3008 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On flood plain. 1511 Comment
  CAS-BOT-BC162460  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  CHSC74153  Bromus laevipes B. Castro; E. Hubert 1996-7-16 685 Butte Black Jack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on slope of recently burned area at edge of forest. Near drainage. 1158 Comment
  CHSC27568  Bromus madritensis subsp. madritensis Robert Schlising 1978-5-17 3260 Butte Magalia, serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC93449  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 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
  UC1131196  Bromus madritensis subsp. rubens C. G. Albertus 1933-5-29 9 Butte 1 1/2 mi n of Wick Comment
  CHSC73881  Bromus orcuttianus B. Castro 1997-6-13 741 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  JEPS100684  Bromus suksdorfii Dean W. Taylor 1995-8-6 15378 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1158 Comment
  CHSC59039  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte Along the west side of Lone Tree Road, about 1/4 mile south of the intersection of Powerhouse Hill Road and Lone Tree Road, about 4 miles south of Oroville. 60 Comment
  CHSC44437  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 1/2 mi SE of Little Bald Rock. 975 Comment
  HSC95509  Calamagrostis canadensis var. langsdorffii L. Ahart 1997-7-11 7757 Butte About 1/4 mi. (air) E of Bald Mtn., about 4 mi. (air) NE of Stirling City, E of the dirt road 1677 Comment
  JEPS114726  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  JEPS122232  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC27198  Calocedrus decurrens P. Moyer 1971-10-2 27 Butte N side Ed.-Psych. Bldg. On CSUC campus. 60 Comment
  CHSC31419  Calocedrus decurrens L. Ahart 1980-9-10 2623 Butte Along the edge of Bean Creek Rd, ca. 1 mi se of Little Bald Rock, ne of Oroville. 335 Comment
  CHSC3593  Calocedrus decurrens Susan Carrauthers 1966-2-22 18 Butte Table Mountain Golf Course (9th Hole). Ca. 5 mi E. of highway 99E. On Oroville Lateral Road. S. W. of city of Oroville. Comment
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Aug 28 2018
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  JEPS123914  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  SEINET10469583  Calochortus coeruleus Mary Susan Taylor 1980-4-18 Taylor 2503 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC34488  Calochortus luteus J. D. Jokerst 1979-5-21 252 Butte NE corner of jct Pentz-Magalia Hwy and Pentz Rd. Comment
  CHSC51941  Calochortus luteus Denise Monceau 1984-4-20 4 Butte Ca 6 mi NE on Wildwood Ave, SE side of rd, 1/4 mi NE on trail. 83 Comment
  CHSC79619  Calochortus luteus Leanna Brown; Shirley Innecken 1999-5-3 79 Butte Vista La Mesa Dr. 428 Comment
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Jul 24 2008
  RSA21631  Calochortus luteus Carl B. Wolf 1937-6-12 8785 Butte Northern Sierra Nevada foothills, 11 miles below Magalia on Oroville road 152 Comment
  CHSC67408  Calochortus monophyllus James D. Jokerst; R. A. Schlising 1985-4-8 2214 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC81581  Calochortus monophyllus Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  CAS-BOT-BC493117  Calochortus monophyllus A. A. Heller 1939-4-10 15372 Butte Upper end of Cohasset Comment
  RSA481906  Calochortus monophyllus Aaron Liston 1988-3-15 697 -1 Butte East of Cohasset, Ponderosa Way, T24N, R2E 500 Comment
  UCD139564  Calochortus monophyllus M. Vincent 1961-3-30 6 Butte corner of Harrison and Sterns Roads, Paradise. 609 Comment
  CHSC53698  Caltha leptosepala var. biflora Kirsten Tarp 1982-7-16 208 Butte In Kimshew Creek, Crane Valley. 1591 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  CHSC24426  Calycadenia multiglandulosa Lowell Ahart 1976-9-18 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC311785  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC106124  Calycadenia oppositifolia Lowell Ahart 1985-5-15 4979 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  POM298231  Calycadenia oppositifolia D. D. Keck 1933-5-31 2411 Butte 4.3 miles N of Chico on Richardson Springs Rd. Comment
  POM53155  Calycadenia oppositifolia A. A. Heller, Brown 1902-5-9 s.n. Butte Berry Canyon (near Clear Creek) from type region Comment
  RSA255509  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 miles S of Chico Municipal Airport on Cohasset Rd. Comment
  UCD69223  Calycadenia oppositifolia P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CHSC25342  Calycadenia spicata M. Hayes 1977-8-3 22 Butte Along Pentz Road 2.0 km east of Highway 99. 80 Comment
  JEPS20224  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se Chico Comment
  RSA0118938  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  RSA755412  Calycadenia truncata L. Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  POM298259  Calycadenia truncata subsp. scabrella D. D. Keck, J. Clausen 1935-6-25 3778 Butte 2.2 miles south of Flea Valley on road to Yankee Hill Comment
  POM97735  Calycanthus occidentalis Edward Palmer 1892-6-7 2068 Butte Near Chico. Comment
  CHSC1362  Calyptridium monospermum R. M. Staley 1952-7-10 Butte Butte Meadows. 1356 Comment
  UC203617  Calyptridium monospermum A. A. Heller 1914-6-24 11512 Butte w side of Sierra Nevada at West Branch; Sierra Nevada 1036 Comment
  UC600489  Calyptridium umbellatum H. F. Copeland 1931-6-11 Butte Jonesville, Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows 1828 Comment
  HSC103797  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road, 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC1586576  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald and Lowell Ahart 1991-6-5 4654 Butte ca 0.5 miles west of Highway 32 on logging road 200-G ca 1 mile north of Platte Mtn Lookout between Forest Ranch and Lomo. Comment
  UCD126116  Calystegia malacophylla H. F. Copeland 1930-7-20 s.n. Butte Jonesville. Comment
  CHSC94105  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  POM219252  Calystegia occidentalis subsp. occidentalis H. F. Copeland 1930-7-18 1390 Butte Jonesville. Comment
  CHSC444  Calystegia occidentalis subsp. occidentalis J. Baynes 1929-5-20 Butte Paradise. 457 Comment
  UC600773  Calystegia occidentalis var. tomentella H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CAS-BOT-BC496963  Camassia leichtlinii subsp. suksdorfii A. A. Heller 1915-6-11 11959 Butte Butte Meadows in Sierra Nevada, in the yellow pine belt 1219 Comment
  SEINET10972401  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte Merrimac Comment
  CHSC61303  Campanula scouleri Lowell Ahart 1993-7-22 7078 Butte Under trees in the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC10793  Capsella bursa-pastoris Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS107339  Capsella bursa-pastoris Lowell Ahart 2005-4-2 11683 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS119569  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  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
  CHSC32654  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-3-31 3452 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
  CHSC109607  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-5-14 18050 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC112103  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  JEPS117177  Carex abrupta Lowell Ahart 2010-9-21 17200 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  SEINET10585935  Carex abrupta Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3020 Butte The Carices of Butte county. T26N, R5E, Jonesville quad (15") NW1/4 of sec 21. Along Willow Cr, 1 mile W of Humbug Rd. On dry disturbed forest floor (Jeffery pine and white fir). With C. integra, C. fracta, C, jepsonii. 1798 Comment
  JEPS122085  Carex angustata Lowell Ahart 2014-7-13 19641 Butte About 80 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  POM183139  Carex aurea H. F. Copeland 1929-6-11 1243 Butte Jonesville. 1524 Comment
  HSC87280  Carex aurea L. P. Janeway, Robert A. Schlising 1988-7-16 3011 Butte Adjacent to Jones Creek at crossing of road to Scotts John Creek. 1616 Comment
  CHSC88472  Carex barbarae L. P. Janeway; B. Castro 2004-8-7 8242 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; about 12 m north of Big Chico Creek and about 7 m higher; between Upper Park Road and Yahi Trail; between Day Camp and the Power Lines. 93 Comment
  CHSC52274  Carex bolanderi L. P. Janeway 1988-7-2 2951 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC95226  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  SEINET10817915  Carex bolanderi A. Arthur Heller 1928-6-16 Heller 14667 Butte Damp, grassy places in the Yello Pine Forest at Butte Meadows. Comment
  CHSC100989  Carex brainerdii L. P. Janeway 2006-5-28 8646 Butte Northern High Sierra Nevada. 0.2 km east of Concow Road, 1.24 km north-northeast of Rag Dump, 4.3 km north of Flea Mountain. 1268 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CHSC44034  Carex capitata S. C. Morey 1983-7-23 572 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC107578  Carex cyrtostachya Lowell Ahart 2011-8-19 17639 Butte On the north side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir dam, about 4 1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  JEPS121376 Image available Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, W northern Sierra Nevada Highlands (n SNH). Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  CHSC42370  Carex densa Lowell Ahart 1987-5-10 5610 Butte On the banks of Wyandotte Creek, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC41302  Carex echinata subsp. echinata S. C. Morey 1983-7-22 538 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52862  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-7-22 3072 Butte Seep just above the High Lakes Road 3.4 mi W of the pass. 1905 Comment
  HSC87066  Carex feta L. P. Janeway 1988-6-16 2799 Butte Along road on W side of canyon of Butte Creek, 3.5 mi. S of Humboldt Rd. 1296 Comment
  CHSC45253  Carex fracta L. P. Janeway 1988-6-14 2784 Butte Upper reaches of Haw Cr, 1 3/4 air mi SE of Lomo. 1226 Comment
  HSC87238  Carex fracta L. P. Janeway 1988-6-16 2811 Butte Along Butte Creek, 1.4 mi. S of Humboldt Rd. via the road in the W side of the canyon 1265 Comment
  SEINET7559348 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest, along Jones Creek, NE of Jonesville. 1720 Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CAS-BOT-BC20459  Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road. 750 Comment
  UCD140427  Carex heteroneura L. P. Janeway 1986-9-1 1827 Butte east end of Philbrook Reservoir. 1691 Comment
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC45054  Carex hirtissima Vernon Oswald 1987-5-28 2937 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  CHSC52869  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3031 Butte Large mdw at head'waters' of Willow Cr. 1935 Comment
  RSA769175  Carex inversa P. F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway s station, Sacramento Valley 50 Comment
  CHSC52918  Carex jonesii L. P. Janeway; R. A. Schlising 1988-8-2 3151 Butte Along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground; ca 1 1/2 air mi NW of Butte Meadows. 1143 Comment
  SEINET4231762 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET4285869 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UC175309  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  SEINET12649529 Image available Carex leavenworthii Lowell Ahart 2012-1 18190 Butte 62 Comment
  CHSC113413  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  SEINET12649605 Image available Carex mesochorea Lowell Ahart 2010-1 16579 Butte 64 Comment
  CHSC83288  Carex microptera L. P. Janeway; B. Castro 2002-7-7 7617 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  CAS-BOT-BC32153  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1.5 mi E of Camp 18, ca 8 mi NE of Feather Falls. 1280 Comment
  CHSC3763  Carex multicaulis R. L. Adams 1964-4-12 87 Butte 1/2 mi. W. Ten Mile House, Highway 32 on N. side road. 8 mi. from Chico. Comment
  UC463028  Carex multicaulis H. F. Copeland 1931-7-2 Butte Jonesville 1600 Comment
  CAS-BOT-BC32154  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, ca 1/2 mi SW of Bardees Bar along N fork of Feather River, 365 Comment
  CHSC52248  Carex nudata L. P. Janeway 1987-7-4 2420 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC47129  Carex praegracilis Vernon Oswald 1983-3-31 239 Butte Upper Bidwell Park, Chico, beside Yahi Trail where it enters the wooded copse e of Diversion Dam (1.3 mi e of the power lines). 146 Comment
  HSC100764  Carex scopulorum var. bracteosa Lowell Ahart 2010-9-28 17264 Butte S edge of 10 acre meadow, ~100 yd. E of Big Kimshew Creek, 1.5 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1887 Comment
  UC1108038  Carex serratodens H. F. Copeland 1932-7-24 Butte by small stream running from w into Butte Creek Meadows Comment
  CHSC41300  Carex simulata S. C. Morey 1983-7-22 536 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC46990  Carex subfusca S. C. Morey 1983-8-4 703 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD141168  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-22 3075 Butte just above the High Lakes Road 3.4 miles west of the pass. 1905 Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CHSC52236  Carex utriculata L. P. Janeway 1988-6-25 2893 Butte Meadow adjacent to Bull Hill Road 2.6 mi from Skyway. 1508 Comment
  CDA34760  Carex vernacula L. Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC45068  Carex vesicaria Vernon Oswald 1987-6-9 2972 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  CDA13262  Carex xerophila G. F. Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake [Cuotolenc Rd.], at N boundary of Magalia. 709 Comment
  CHSC47141  Carex xerophila B. Castro; Gail Kuenster 1989-4-29 307 Butte Ca 0.1 mi N of jct Coutolenc Rd and Skyway; on flat ledge between Coutolenc Rd and old SPRR bed. 707 Comment
  SEINET10785807  Carex xerophila John Thomas Howell 1967-6-22 Howell 42605 Butte Magalia. On serpentine. 701 Comment
  CHSC46408  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  SEINET263349 Image available Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte About 1/10 mile NW of the West Branch Bridge across Lake Oroville 290 Comment
  CHSC111969  Castilleja affinis subsp. affinis Lowell Ahart 2012-6-2 18127 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. 286 Comment
  JEPS119872  Castilleja affinis subsp. affinis Lowell Ahart 2012-6-2 18127 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
  UCR133594  Castilleja applegatei H. F. Copeland 1927-9-2 952 Butte Jonesville 1524 Comment
  CHSC114975  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 A Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC1697  Castilleja applegatei subsp. pinetorum M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  CAS-BOT-BC255462  Castilleja applegatei var. pinetorum Peter H. Raven 1954-4-17 6619 Butte 10 miles above Oroville on road to Pulga Comment
  CAS-BOT-BC255465  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 Comment
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 371 Comment
  CHSC27850  Castilleja attenuata Ethel Pearson 1978-4-18 11 Butte Ca. 12 mi n of Chico on State Hwy. 99 at Broyles Rd. 67 Comment
  CHSC60588  Castilleja attenuata Vernon H. Oswald; Lowell Ahart 1993-4-21 5291 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. 731 Comment
  JEPS124006  Castilleja attenuata Lowell Ahart 2015-4-18 20043 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  OBI9383  Castilleja attenuata Lewis S. Rose 1967-5-6 67055 Butte Oroville 52 Comment
  CHSC3454  Castilleja exserta Judy Potter 1966-3-28 Butte South of Chico where Butte Creek crosses US 99. Comment
  JEPS119798  Castilleja lacera Lowell Ahart 2012-5-20 18100 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. Comment
  CHSC37278  Castilleja miniata M. S. Taylor; L. Ahart 1981-8-16 4195 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC39532  Castilleja tenuis Lowell Ahart 1983-6-12 4044 Butte 7 miles south-west of Feather Falls. About 1 mile south of Crystall Hills, near Oregon Gulch, near Lake Oroville. 425 Comment
  OBI5725  Ceanothus cordulatus H. F. Cofeland 1927-9-2 232 Butte Jonesville 1524 Comment
  CHSC3611  Ceanothus cuneatus R. Jaegel 1966-2-21 29 Butte Collected 10 miles east of Durham Cemetary, in a meadow on the floor of the valley. Comment
  CHSC51074  Ceanothus cuneatus Pauline Broyles 1988-2-25 1097 Butte The Nature Conservancy Vina Plains Preserve. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Atop the bank of the creek. Comment
  JEPS115256  Ceanothus cuneatus var. cuneatus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15486 Butte On a ridge about 300 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 354 Comment
  JEPS119624  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trial, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  RSA399893  Ceanothus integerrimus L. S. Rose 1937-6-10 37376 Butte Forbestown. 838 Comment
  RSA719712  Ceanothus integerrimus Michael A. Vincent, K. Levings 2006-7-29 12888 Butte NE of Chico along Rt. 32. Comment
  CAS-BOT-BC52009  Ceanothus prostratus John Thomas Howell 1975-6-15 51119 Butte Paradise, Skyway near Clark Road 609 Comment
  SD2952  Ceanothus prostratus E. B. Copeland 1930-7-7 Butte Jonesville 1600 Comment
  RSA769801  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  UCD130046  Centaurea melitensis L. E. Hazeltine 1916-6-27 s.n. Butte Chico. Comment
  CDA34637  Centaurea solstitialis L. Ahart 2009-6-3 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC97333  Centaurea solstitialis L. P. Janeway 2007-7-30 9147 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1204 Comment
  CDA34755  Centaurium tenuiflorum L. Ahart 2009-6-19 15943 Butte North of trail to pond and table, on the east side 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. Comment
  CDA43076  Centaurium tenuiflorum L. P. Janeway 2011-6-26 10401 Butte Cascade Range Foothills/Sacramento Valley.; Upper Bidwell Park, Chico; just west of Horseshoe Lake. Comment
  SEINET10454837  Centaurium venustum subsp. abramsii Mary Susan Taylor 1980-6-14 Taylor 2874 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC21039  Centromadia fitchii M. S. Taylor 1975-10-4 950 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC30411  Centromadia fitchii M. Merryman 1979-10-7 60 A Butte Richvale vernal pools, ca. 0.9 mi n of jct Hwys 99 and 162. 33 Comment
  UC754006  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  UCD130186  Centromadia fitchii W. R. Powell 1968-11-12 1613 Butte Ellis Ranch, 200 yards north of La Porte Road, 4 miles southwest of Bangor. 91 Comment
  CHSC48251  Cerastium fontanum subsp. vulgare Vernon Oswald 1984-5-16 1187 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek at Five Mile Recreation Area. In lawn. 82 Comment
  JEPS122187  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CAS-BOT-BC388262  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CAS-BOT-BC388265  Cerastium glomeratum Lowell Ahart 1980-5-17 2285 Butte 1/2 mile south-east of Hurleton 600 Comment
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  RSA31118  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Canyon of Big Chico Creek E of Chico. 69 Comment
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Feb 17 2016
  CHSC78097  Cercocarpus betuloides var. betuloides Megan Lee Hudzik 1998-4-21 26 Butte 1 mile n of Cohasset on the side of Cohasset Road. 914 Comment
  CAS-BOT-BC140753  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  JEPS83925  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-3 831 Butte 2.3 mi ssw intersection of Hwy 99 and Rowles Rd (0.2 mi s of the Butte-Tehema county line); Vina Plains 51 Comment
  CDA13841  Chamaesyce maculata G. F. Hrusa, T. D. Wilfred 1996-9-5 13569 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC79023  Chamaesyce maculata Lowell Ahart 2000-11-4 8717 Butte On the west side of Highway 70, about 50 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 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
  CHSC88927  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  JEPS105939  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  CHSC52022  Chamaesyce ocellata Steven Triano 1988-9-18 252 Butte Pasture ca 300 ft e of Hwy. 32 and 2.5 mi w of its jct. with Hwy. 99. 121 Comment
  CDA35251  Chamaesyce ocellata T. C. Fuller 1962-6-11 8948 Butte Northwest corner of Pentz Rd. and Hwy 99E to Biggs, 9.4 miles southeast of Chico. 0 Comment
  UC1563257  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-9-30 6606 Butte 1/8 mi n Canyon Creek Bridge (n side of Canyon Creek, below high water line); Lake Oroville 228 Comment
  SEINET10529873  Cheilanthes cooperae Mary Susan Taylor 1980-4-16 Taylor 2484 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC39229  Cheilanthes gracillima M. S. Taylor; K. Tharp 1983-3-11 5223 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  UC1609401  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte ca 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CAS-BOT-BC69447  Cheilanthes gracillima Mrs. H. C. Cantelow 1941-5-18 s.n. Butte 1.5 mi. w. of Jonesville, on road to Gibsonville. 1615 Comment
  CHSC34768  Chenopodium album L. Ahart 1981-11-6 3223 Butte On good soil on west side of road near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC79987  Chenopodium album L. P. Janeway; B. Castro 1999-6-4 6456 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  CAS-BOT-BC460929  Chenopodium album Lowell Ahart 1981-11-6 3230 Butte East of the Gridley Bridge 35 Comment
  JEPS103334  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UCR188501  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC33973  Chimaphila menziesii M. S. Taylor 1981-5-13 3704 Butte Jct. of 23N15.5, 22N66X and 22N40X, ca. 2 air mi s of Four Trees Rd, ca. 1 air mile w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  CHSC30089  Chlorogalum pomeridianum M. S. Taylor 1980-7-5 3053 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CHSC38877  Chlorogalum pomeridianum var. pomeridianum Vernon Oswald 1983-6-20 726 Butte Upper Bidwell park, Chico, along Yahi Trail e of Brown's Hole. 198 Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  CAS-BOT-BC252670  Chorizanthe membranacea Lowell Ahart 1984-6-8 4678 Butte Along the dirt road 1/10 mile north-west of the water tower, above the genterator about 1 mile east of teh Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  CHSC59120  Chorizanthe polygonoides L. P. Janeway; B. Castro 1992-5-9 4163 Butte Unnamed canyon on southeast side of Neal Road up-canyon ca 1/2 mi from the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. 80 Comment
  CHSC29834  Chorizanthe polygonoides var. polygonoides M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2756 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC45362  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1987-4-14 2323 Butte Hwy 32 between Chico and Forest Ranch 0.8 mi s of Crown Point Rd. 524 Comment
  CHSC97362  Chorizanthe polygonoides var. polygonoides Paul Maslin 2005-5-1 58 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  CHSC87571  Chorizanthe stellulata R. D. Fischer 2004-4-28 140 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. On top of Disk Golf Course near canyon edge and toward the middle of the course. 365 Comment
  RSA505436  Chrysothamnus parryi subsp. latior R. C. Bacigalupi 1957-7-26 6039 Butte Along road berm on the Humbug Road, 2.2 miles SW of Nimshaw, at eastern canyonside of Butte Creek 579 Comment
  CHSC47051  Circaea alpina subsp. pacifica R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4650 Butte NE part of county on Snow Mountain ridge. At roadside. 1950 Comment
  CHSC21141  Cirsium andersonii M. S. Taylor 1975-8-31 899 Butte Ca. 50 ft n of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  RSA0070561  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  UCD130510  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  SEINET10971148  Cirsium coulteri Mary Susan Taylor 1975-6-30 Taylor 821 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  UCD130699  Cirsium occidentale var. venustum M. Vincent 1963-6-11 425 Butte Pentz Road 5 miles south of Paradise. Roadside. Comment
  UC1564789  Cirsium scariosum var. americanum V. Oswald and L. Ahart 1989-6-27 3828 Butte 3.3 mi (air) se Jonesville (Humbug Rd. at Butte Creek House); Butte Creek 1767 Comment
  CHSC90249  Clarkia arcuata D. R. Rioux 1989-4-8 8 Butte Vic. Salmon Hole, Upper Bidwell Pk., ca. 3 mi e of Chico Municipal Golf Course. 106 Comment
  HSC43115  Clarkia arcuata Maralyn O'Meara 1974-4-20 295 Butte Table Mtn. 305 Comment
  CAS-BOT-BC163544  Clarkia arcuata Mrs. C. C. Bruce 1897-4-1 1956 Butte Unspecified Comment
  SEINET12193694  Clarkia arcuata T. A. Barrett 1976-1 10 Butte 13.7 km E of Chico, N side of the Skyway 500 Comment
  UCD103993  Clarkia arcuata Katherine Lahey 1981-4-16 33 Butte Table Mountain. 0.6 mile E of Cherokee Road and Table Mountain Blvd. junction, on Cherokee Road. 365 Comment
  SD122548  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile West of Ponderosa Dam, ca. 2 miles North West of Forbestown. 370 Comment
  SFV10911  Clarkia concinna M. L. Vincent 1963-6-8 395 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC1096  Clarkia concinna subsp. concinna R. Carter 1964-6-12 119 Butte About 5 mi. NW of Forbestown on old Forbestown-Feather Falls Rd. 548 Comment
  UC725459  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte 22 mi from Oroville (on the Feather River Highway, just e of Jarboe Pass) 609 Comment
  RSA699539  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at roads closest point to Big Chico Creek. 216 Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC27107  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  JEPS100683  Clarkia mildrediae Dean W. Taylor 1995-8-6 15377 Butte 2 air mi NE of Stirling City; Plumas National Forest 1127 Comment
  CDA13339  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada; Approx. 0.5 m. on USFS 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC39036  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1983-7-22 4429 Butte E part of county, SE of Brush Creek on Milsap Bar Road, at crossing of Indian Creek; roadside. 853 Comment
  CHSC71157  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1993-7-16 4391 Butte Southeast side of North Fork Feather River; along Hwy 70 0.4 mi north of Cresta Powerhouse. Road cutbank. 457 Comment
  RSA0059909  Clarkia mosquinii L. Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  SEINET12193695  Clarkia purpurea J. R. Birmingham 1972-1 2 Butte near Horseshoe Lake, Bidwell Park, Chico 181 Comment
  CHSC112935  Clarkia purpurea subsp. purpurea B. Castro 2012-6-5 1927 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 540 ft NE of jcn of E. Hamilton and Larkin Roads. 38 Comment
  SD111901  Clarkia purpurea subsp. quadrivulnera Barbara Ertter, Lowell Ahart & Jeff Strachan 1980-5-6 3278 Butte Peter Ahart Ranch ca 2 1/2 miles NNE of Honcut between Oroville & Marysville, stream through Valley Grassland and grainfield. 29 Comment
  SEINET7073009  Clarkia purpurea subsp. quadrivulnera A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  UC569733  Clarkia purpurea subsp. quadrivulnera F. W. Embree 1934-4-24 43 Butte 4 1/2 mi n and 1 1/2 mi e Biggs; Marysville Quadrangle 38 Comment
  CHSC88061  Clarkia purpurea subsp. viminea R. D. Fischer 2004-5-30 187 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 3.0 miles s. of this junction. UTM: 10616846E 4407606N. 420 Comment
  CHSC64118  Clarkia rhomboidea L. P. Janeway; Jean Hubbel, Dave Wood 1994-6-3 4655 Butte Forest Ranch; 0.5 mi east of Hwy 32 on Nopel Avenue and Cody Lane. Along side of dirt road. 725 Comment
  CHSC70756  Clarkia rhomboidea L. P. Janeway 1994-6-20 4670 Butte About 0.3 mi southwest of Oak Point; overlooking Big Kimshew Point. 1447 Comment
  UC1143252  Clarkia rhomboidea H. and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  CAS-BOT-BC439427  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-6 5572 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC36180  Claytonia perfoliata subsp. perfoliata J. S. Adams 1980-4-25 17 Butte On s side of Bidwell Park Rd, between One Mile and Five Mile, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC443704  Claytonia rubra Lowell Ahart 1982-6-4 3540 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC40612  Claytonia rubra subsp. rubra L. Ahart; J. Jokerst 1985-3-24 4861 Butte Found growing on damp bare broken disturbed serpentine west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC56077  Claytonia rubra subsp. rubra L. P. Janeway; R. A. Schlising 1988-7-16 3000 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  CHSC96814  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  UC1876148  Clematis lasiantha T. A. Ranker and P. G. Trapp 1994-6-17 1613 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  JEPS88526  Clintonia uniflora Lowell Ahart 1996-6-5 7680 Butte about 7 air mi e of Feather Falls (about 1 mi n of Golden Trout Crossing, e of bridge across South Fork of the Feather River); South Fork Feather River 914 Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  CHSC90146  Collinsia sparsiflora Roberta A. Boer 1980-4-25 20 Butte About 1/4 mi southwest of the junction of Honeyrun and Humbug Roads, about 7 mi east of Chico. 213 Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SBBG17300  Collinsia sparsiflora var. sparsiflora M. Vincent 1962-4-16 196 Butte Honey Run Rd, ca. 0.5 mi W of Paradise, in Butte Crk Cyn Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC42553  Collomia heterophylla Lowell Ahart 1987-5-22 5661 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC129469  Collomia heterophylla Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC180250  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte Near Stirling 1074 Comment
  CAS-BOT-BC288957  Conyza floribunda Lowell Ahart 1985-1-27 4836 Butte At Kunkle Res, about 2 miles S of Paradise 550 Comment
  JEPS46150  Corallorhiza maculata Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  UCD138901  Corallorhiza striata Kenneth D. Stewart 1965-7-15 s.n. Butte along State Highway 32, around 20 miles north of Forest Ranch. Comment
  JEPS115275  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-6-30 15973 Butte On the west side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC196062  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e Oroville Comment
  UC1562384  Cordylanthus tenuis subsp. tenuis Lowell Ahart 1990-8-15 6589 Butte about 1/2 mi nw Enterprise Bridge across Lake Oroville (on e side of Enterprise Boat Launch parking area) 335 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
  CHSC48307  Cornus sericea subsp. sericea Vernon Oswald 1987-6-23 3007 Butte Just w of the Skyway, 1.4 mi (odometer) s of Inskip. 1426 Comment
  CHSC118336  Cornus sessilis Lowell Ahart 2016-9-9 21345 Butte On west side of road, after crossing Slate Creek on Old County Road to Scales, take first road to the right and go about 1/2 mile, near Stowman Ravine, about 3 miles (air) southwest of Poverty Hill Mine, about 8 miles (air) southwest of La Porte. 1214 Comment
  CDA4037  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  POM181520  Corydalis caseana H. F. Copeland 1927-9-4 758 Butte Jonesville. Comment
  CAS-BOT-BC401856  Corydalis caseana subsp. caseana Lowell Ahart 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow 1676 Comment
  CHSC11913  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  SFV16941  Corylus cornuta subsp. californica J. N. Hogue 1980-9-6 83 .7 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  RSA0076091  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC31653  Crassula connata L. Ahart 1973-3-16 177 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65448  Crassula connata Vernon Oswald 1989-3-30 3729 Butte Upper Bidwell Park, Chico. Slightly nw of the North Rim Trail along an intermittent streamlet draining into Sycamore Creek. 274 Comment
  CHSC46741  Crassula saginoides 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. 36 Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  JEPS107416  Crassula tillaea Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11662 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
  CAS-BOT-BC427957  Crassula tillaea Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  OBI16623  Crepis occidentalis H. F. Copeland 1932-7-24 Butte Near Butte Crk meadow. Vicinity of Jonesville, Lassen Natl Forest Comment
  CHSC41357  Crucianella angustifolia R. A. Schlising; J. D. Jokerst 1980-7-2 3816 Butte NW of De Sabla, 0.75 miles SW of crossing of Butte Creek. 658 Comment
  CHSC93872  Crucianella angustifolia Lowell Ahart 2006-6-9 12645 Butte On the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 1/8 mile east of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 435 Comment
  UCD80865  Crucianella angustifolia Robert E. Preston 2007-6-7 2557 Butte North Table Mountain, along Cherokee Rd, 0.65 mi N of Oregon Gulch Rd. 417 Comment
  CDA6677  Crucianella angustifolia J. T. Howell 1959-9-2 34692 Butte Sierra Nevada; Digger Pine Belt, 7 miles northeast of Oroville on Feather River Highway. 0 Comment
  SEINET11170847  Crucianella angustifolia B. Ertter, L. Ahart, J. Strachan 1980-5-6 3282 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, 30 Comment
  JEPS108961  Crypsis alopecuroides Lowell Ahart 2006-9-11 13302 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-BC190089  Crypsis schoenoides Lowell Ahart 1980-8-16 2584 Butte Near Honcut. 60 Comment
  CHSC97688  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, 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
  SEINET10967136  Crypsis schoenoides Lowell Ahart 1986-11-14 Ahart 5481 Butte On dry red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 37 Comment
  HSC11252  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte Blavo, near Chico Comment
  UC203838  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte about 6 mi nw Chico; Sacramento Valley Comment
  UC179681  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte near Butte Meadows; Little Summit Comment
  SEINET10497261  Cryptantha affinis Lowell Ahart 1983-8-16 Ahart 4292 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC103214  Cryptantha crinita Paul Kirk; John Hunt 2010-5-25 101 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 Comment
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CHSC33581  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte N of logging landing site, just w of the power lines off logging rd, ca. 1/2 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  CHSC61019  Cupressus macrocarpa Vernon H. Oswald 1993-7-29 5733 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  SEINET10546819  Cuscuta Mary Susan Taylor 1978-5-7 Taylor 1604 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC29817  Cuscuta californica M. S. Taylor; J. D. Jokerst 1979-10-13 2264 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  SEINET10496606  Cuscuta californica Lowell Ahart 1985-6-17 Ahart 5066 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC48359  Cuscuta californica var. californica Vernon Oswald 1988-6-14 3378 Butte Jordan Hill Rd. 1.0 mi (odometer) e of the West Branch of the Feather River. 579 Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1476882  Cuscuta howelliana Lowell Ahart 1979-10-7 Butte Honcut Honcut Quad. (Peter Ahart Ranch) 35 Comment
  JEPS108864  Cuscuta pentagona Lowell Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 54 Comment
  SD3489  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  CHSC117432  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte On the bottom of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 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
  UC480689  Cynoglossum grande H. F. Copeland 1923-2-24 107 Butte Ferny Way near Chico Comment
  CAS-BOT-BC190389  Cynosurus echinatus John Thomas Howell; Gordon H. True 1968-6-12 44563 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Gravel bar along the river. 48 Comment
  CAS-BOT-BC114739  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Rd, 36 Comment
  CHSC68383  Cyperus eragrostis L. P. Janeway 1988-6-19 2826 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 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
  UC1100535  Cyperus eragrostis Herbert L. Mason 1945-9-19 12736 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  SEINET10466870  Cyperus eragrostis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4102 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC45114  Cyperus flavescens Vernon Oswald 1983-7-31 941 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  CHSC45144  Cyperus flavescens Lowell Ahart 1975-7-19 901 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET4896961  Cyperus flavescens L. Ahart, V. H. Oswald 1999-8-13 8143 Butte 12 miles SW of Chico. Legal: T20N R1W 32 Comment
  UCD139948  Cyperus flavicomus Whitney Brim-DeForest 2013-8-16 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  UCR146290  Cyperus flavicomus Ellen Dean, Et al. 2001-8-20 850 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162, south side of Hamilton road, west of jct. with Riceton Hwqy, W side of RR tracks; along dirt road that is the extension of Hamilton rd. Comment
  CHSC68353  Cyperus niger L. P. Janeway 1986-10-19 1926 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  SD131026  Cyperus niger Lowell Ahart 1981-9-19 3181 Butte Sierra Nevada Mountains; Arch Rock Tunnel; Highway 70. 550 Comment
  CAS-BOT-BC113846  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mi NE of Kunkle Res., S of Paradise. 600 Comment
  CHSC43137  Cyperus squarrosus Robert Banchero 1981-8-6 638 Butte Ca 3 air mi se of Jonesville. 1853 Comment
  CHSC51018  Cyperus squarrosus Lowell Ahart 1990-7-15 6563 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
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC478548  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  POM111856  Cyperus squarrosus C. C. Bruce 1897-06 1882 Butte Little Chico Comment
  CHSC110395  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC68414  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-10-4 1906 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  SEINET10467193  Cyperus strigosus Mary Susan Taylor 1978-9-8 Taylor 1881 A Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC111164  Cystopteris fragilis Lowell Ahart 2012-6-21 18203 Butte High south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  JEPS116130  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  CAS-BOT-BC68041  Cystopteris fragilis K. D. Marsh 1974-4-30 4 Butte Honey Run Rd, ca. 11 mi e of Chico Comment
  SEINET10968264  Dactylis glomerata Mary Susan Taylor 1978-7-21 Taylor 1815 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  JEPS32213  Damasonium californicum W. L. Jepson 1934-5-4 16607 Butte 1 12/ mi. s. Nord (swales of Pine Creek near Sacramento R.); Pine Creek Comment
  SBBG128060  Danthonia californica L. Ahart 2010-9-21 17230 Butte N side of a poor dirt rd, ca. 1 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1899 Comment
  CHSC23416  Datura wrightii K. Stern 1970-1-1 Butte S. end of Eddy Lake, Rancho Llano Seco. Comment
  SEINET10454791  Daucus carota Mary Susan Taylor 1982-8-16 Taylor 4986 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  UC118573  Delphinium Mrs. R. M. Austin 1896-7-1 Butte Colby Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  CHSC52459  Delphinium hansenii subsp. hansenii Vernon Oswald 1983-5-21 509 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC78159  Delphinium hansenii subsp. hansenii Lowell Ahart 2000-5-31 8431 Butte Near the north shore line of Lake Oroville, about 50 yards east of the boat launch ramp, southeast of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC56778  Delphinium patens subsp. patens J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte South side of Olive Hwy 0.4 mi southwest of its junction with Forbestown Road; ca 6.0 air mi east of Oroville. Comment
  CHSC13849  Delphinium variegatum subsp. variegatum P. Collinsworth 1974-3-26 9 Butte Along roadside off Hwy. 32 ca. .5 mi. E of Chico. Comment
  CHSC94938  Delphinium variegatum subsp. variegatum K. Lang; J. Lang 2005-3-23 35 Butte Humboldt Rd., Chico. [Label says] Coordinates: 39 degrees 75.989 minutes N, 121 degrees 73.496 minutes W. 289 Comment
  POM97723  Dendromecon rigida C. C. Bruce 1898-05 2417 Butte Doe mill Comment
  SEINET10448604  Dentaria pachystigma var. dissectifolia Lowell Ahart 1983-3-28 Ahart 3906 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  CAS-BOT-BC192651  Deschampsia danthonioides Lowell Ahart 1987-5-6 5556 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 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
  UCD63286  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  CHSC35003  Dianthus armeria R. A. Schlising 1980-6-14 3710 Butte N of Lake Oroville along Hwy 162, 0.2 miles N of Berry Creek and 0.8 miles S of junction with Bald Rock Road. Roadside. 560 Comment
  CHSC101748  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
  CHSC86952  Dianthus armeria subsp. armeria L. P. Janeway; B. Castro 2001-6-17 7184 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy. 1000 Comment
  CHSC637  Dicentra formosa R. Carter 1964-5-16 94 Butte Feather River Canyon, 200 yds. Up N side Bear Creek opposite large tunnel. 609 Comment
  CHSC76943  Dicentra formosa Ida Ryan 1893-5-1 Butte Big Chico Creek. Comment
  UC120094  Dicentra formosa Mrs. R. M. Austin 1896-1 230 Butte Colby Comment
  UC600686  Dicentra formosa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  CHSC19651  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET12046113  Dichelostemma capitatum K. E. Warwick 1978-1 3 Butte ca 50 m N of Humbolt Rd, 1 km E of intersection of Humbolt Rd & Bruce Rd, ca 3 km E of Chico Comment
  CHSC90086  Dichelostemma capitatum subsp. capitatum Ross Rowland 2001-3-28 11 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  UCD105288  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2007-3-23 2418 Butte Ca. 3.7 mi NW of Oroville on NW side of PG and E substation. 45 Comment
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  CHSC44383  Dichondra donelliana Lowell Ahart 1988-6-7 6035 Butte On the Henry Smith Ranch, about 1/4 mile west of the Oroville Bangor Highway, about 1/2 mile north-west of Bangor. 213 Comment
  JEPS95153  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Oroville, at the Butte County Historical Society Museum Butte County Historical Society Museum; Oroville, Butte County Historical Society Museum 60 Comment
  UCD169358  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove. Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  CAS-BOT-BC209035  Digitaria sanguinalis Ira L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC40902  Digitaria sanguinalis Lowell Ahart 1985-11-7 5236 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC48994  Diplacus angustatus Vernon Oswald 1986-5-6 1996 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
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Aug 22 2008
  CHSC76971  Diplacus grandiflorus Margie Collins 1894-5-1 Butte Centerville. Comment
  SEINET10570113  Diplacus grandiflorus Mary Susan Taylor 1981-5-5 Taylor 3599 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  SJSU14138  Diplacus kelloggii D. J. Lane 1976-3-27 Butte Table Mt, Oregon City Rd 335 Comment
  CAS-BOT-BC153214  Diplacus kelloggii C. C., Mrs. Bruce 1897-4-1 2102 Butte Little Chico Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 Comment
  CHSC1802  Diplacus tricolor R. Carter 1965-3-30 175 Butte Found on Whurlitzer Ranch NW of Chico. 50 yards inside of gate. 60 Comment
  CHSC90304  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point. 1249 Comment
  CHSC100483  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  CAS-BOT-BC136232  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CAS-BOT-BC136235  Dodecatheon alpinum H. F. Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  UC877607  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows Sierra Nevada, Butte Meadows 1219 Comment
  CHSC4174  Dodecatheon hendersonii Kathy Sommerstrom 1967-4-25 25 Butte Found 1/8 mi west of covered bridge, 100 yds from Butte Creek on South bank. 76 Comment
  CHSC45084  Dodecatheon hendersonii J. Marr 1988-3-24 10 Butte ! mi w of Concow Rd 6 mi from Hwy 70, 18 mi n of Oroville. 633 Comment
  CHSC67292  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1948 Butte Ca. 10 mi E of Oroville on the E side of Grand Oak Rd., 0.35 mi E of Hurleton-Swedes Flat Rd., just beyond Oak Cemetary. Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  POM59142  Downingia bicornuta E. B. Copeland 1903-5-15 3176 Butte Chico. Comment
  RSA517016  Downingia bicornuta Barbara Ertter, L. Ahart 1986-4-13 5902 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CDA42333  Downingia bicornuta var. picta T. C. Fuller 1962-5-17 8713 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  RSA304469  Downingia cuspidata Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca 2 1/2 miles NNE of Honcut, between Marysville and Oroville. 30 Comment
  SEINET3450898  Downingia cuspidata Unknown 2003-5-28 10227 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC115370  Downingia insignis Lowell Ahart 2015-4-24 20058 Butte Normal size plants, on dry to wet bare soil, bottom and sides (road edges) of a large duck field. 19 Comment
  CHSC112885  Downingia ornatissima var. ornatissima Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  SEINET10448471  Draba verna Lowell Ahart 1983-5-7 Ahart 3967 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC35018  Draba verna var. verna R. E. Preston 1982-3-20 195 Butte Ca. 50 ft n of Humboldt Rd, ca. 3.3 mi e of downtown Chico. 106 Comment
  CHSC48331  Draba verna var. verna Vernon Oswald 1987-3-26 2296 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek near the entry gate. 71 Comment
  UC1382130  Draperia systyla L. Constance and David H. French 1968-5-2 3867 Butte Canyon of North Fork of Feather River 7.3 miles SW of Storrie Comment
  CDA40332  Draperia systyla G. D. Barbe, T. C. Fuller 1982-6-14 3684 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CHSC93796  Dryopteris arguta Lowell Ahart 2006-5-19 12634 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
  JEPS104154  Dryopteris arguta Lowell Ahart 2003-7-12 10375 Butte On the sides of a wash, on the w side of Milsap Bar Rd, ca 1/8 mi south of the bridge across the North Fork of the Feather River, ca 4 mi (air) ne of the Brush Creek Work Center, ca 20 mi (air) ne of Oroville. 997 Comment
  JEPS107674  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
  RSA754843  Dryopteris arguta L. Ahart 2009-8-20 16288 Butte Near rim edge, west edge of the open area west of the Guardian Rock Trail, about 30-100 yards north of Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32., Upper Bidwell park, about 10 miles northeast of Chico. 399 Comment
  CHSC62645  Dudleya cymosa subsp. cymosa Lowell Ahart 1993-6-26 7040 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC109756  Dysphania ambrosioides Lowell Ahart 2012-10-20 18499 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET11934612  Dysphania anthelmintica Unknown 1981-1 3224 Butte a little W of Gray Lodge Waterfowl Mgmt HQ, ca 0.75 mi W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  SEINET4568073  Echinochloa colona R. Halse 2006-8-2 6985 Butte Chico; driveway along Mangrove Ave. by its intersection with east 7th Ave. 95 Comment
  CDA38790  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC108135  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 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
  CHSC31698  Echinochloa crus-galli L. Ahart 1977-9-8 1564 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  RSA796046  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  UC203668  Echinochloa crus-galli A. A. Heller 1914-5-19 11418 Butte 8 mi n Oroville Comment
  SEINET10868954  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  JEPS76251  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  UCD61163  Echinochloa oryzicola B. Voorhees 1997-8-21 Butte Davit Dayton Ranch, south of Chico. Comment
  RSA733899  Echinochloa oryzoides Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  UCD61171  Echinochloa oryzoides P. B. Kennedy 1921-8-9 D Butte Rice Station, Biggs. Comment
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  UC1101555  Elatine ambigua Herbert L. Mason and Verne Grant 1946-8-15 13052 Butte near caretaker's house (833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  CHSC112424  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 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
  CHSC65778  Elatine heterandra Vernon H. Oswald 1996-4-10 7354 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CHSC78180  Eleocharis acicularis Lowell Ahart 2000-5-27 8407 Butte Boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west end of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS98375  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte 2 1/4 air miles N of Biggs (100 ft N of Hamilton Road, about 1/8 mi E of Riceton Road, Rice Experiment Station) 30 Comment
  CDA38955  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8691 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC38908  Eleocharis acicularis var. occidentalis Vernon Oswald 1983-7-21 890 Butte Upper Bidwell Park, Chico, along the n-w edge of Horseshoe Lake. 100 Comment
  CHSC78286  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 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
  CHSC31926  Eleocharis bella J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 842 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with Skyway, community of Butte Meadows. 1341 Comment
  CHSC78182  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CAS-BOT-BC113456  Eleocharis bella Lowell Ahart 1980-7-29 2510 Butte Along Lower Forbestown Road. 750 Comment
  JEPS98588  Eleocharis decumbens Lowell Ahart 2000-6-29 8541 Butte Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  RSA715927  Eleocharis decumbens L. Ahart 2000-6-29 8541 Butte Flea meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  CAS-BOT-BC113373  Eleocharis engelmannii Lowell Ahart 1974-11-9 s.n. Butte In rice field, Peter Ahart ranch, Honcut 45 Comment
  CHSC68437  Eleocharis macrostachya L. P. Janeway; Patty Costello 1987-9-7 2580 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. 70 Comment
  CHSC68444  Eleocharis montevidensis L. P. Janeway 1986-10-19 1935 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CDA39003  Eleocharis obtusa var. engelmannii L. Ahart 2000-10-21 8712 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
  CHSC78565  Eleocharis pachycarpa Lowell Ahart 2000-8-30 8676 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  JEPS98593  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8389 Butte 12 air miles SE of Oroville (E side of North Honcut Creek, Peter Ahart Ranch, 1 mi N and 2 3/4 mi E of Honcut) 39 Comment
  SEINET3478049  Eleocharis pachycarpa Unknown 2000-7-18 8597 Butte Oroville, Oroville, about 4 air miles southwest, about 0.5 miles west of Pacific Heights Road, Oroville Wildlife Area 40 Comment
  CAS-BOT-BC113211  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, 731 Comment
  CHSC66683  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart 1996-7-22 8092 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 Tract 3.1, Sanctuary II. 32 Comment
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS98613  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  RSA716570  Eleocharis quinqueflora L. Ahart 2000-6-29 8542 Butte On the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  CHSC78928  Eleocharis radicans Lowell Ahart 2000-10-2 8700 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
  JEPS104211  Eleocharis rostellata Lowell Ahart 2003-5-27 10224 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  UC1564750  Eleocharis suksdorfiana V. Oswald and L. Ahart 1989-8-15 3936 Butte N of and visible from Soda Ridge Road, 1.4 mi W of its junction with Coon Hollow Road, 1.2 air mi N of Philbrook Reservoir 1752 Comment
  CHSC38816  Eleusine indica Vernon Oswald 1983-10-3 1051 Butte Upper Bidwell Park, Chico, at the north entrance to the parking lot at Hooker Oak Recreation Area. Roadside. 79 Comment
  CHSC4419  Elymus caput-medusae 1966-5-9 Butte Alligator Hole, Upper Bidwell Park, Chico. Comment
  CHSC98334  Elymus caput-medusae L. P. Janeway; B. Castro 2007-5-19 8979 Butte Cascade Range Foothills. Bottom of un-named drainage on southesast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. On the lowest terrace above the dry dreek; dry hard clay soil, Tuscan Mudflow outcrops (volcanic) above. 91 Comment
  CAS-BOT-BC227298  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  CHSC103162  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 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
  JEPS106202  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CAS-BOT-BC234109  Elymus multisetus John Thomas Howell 1962-6-15 37529 Butte Magalia, Sierra Nevada 731 Comment
  JEPS110200  Elymus trachycaulus subsp. subsecundus Lowell Ahart 2006-7-16 12999 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CHSC32668  Enemion occidentale M. S. Taylor 1981-3-24 3448 Butte S side of Hwy 70, ca. 100 ft w of Poe Dam, ca. 1/2 e of Pulga. Comment
  CAS-BOT-BC410228  Enemion occidentale J. H. Morrison 1933-4-10 s.n. Butte Near Durham Comment
  SEINET11266286  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico. Erect shrub without need of support, about 2 feet high.; 0 Comment
  SEINET10874040  Epilobium adenocaulon var. parishii Mary Susan Taylor 1979-8-4 Taylor 2180 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC40590  Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte Near 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
  UCD105377  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC111163  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2012-6-21 18205 Butte On the south sife of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC70333  Epilobium ciliatum subsp. ciliatum R. A. Schlising; P. Broyles 1988-7-3 4562 Butte SE of Stirling City, past '5 Corners' at a small stream. Comment
  UCSC000491  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1928-7-31 s.n. Butte in woods along Butte Creek - Jonesville 1372 Comment
  CHSC38561  Epilobium cleistogamum Vernon Oswald 1983-6-3 631 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the diversion channel. 79 Comment
  CHSC58927  Epilobium densiflorum Lowell Ahart 1992-7-29 6890 Butte In a depression, on slopes, about 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC65647  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end. Along area of dirt road 21N25A. 1079 Comment
  CHSC84031  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  SEINET6644443 Image available Epilobium obcordatum E. B. Copeland 1931-1 664 Butte Jonesville; "the Summit" 2000 Comment
  CHSC28716  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  CHSC46384  Epilobium torreyi Lowell Ahart 1989-5-23 6257 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
  RSA795698  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 0.75 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 air miles north of Oroville. 299 Comment
  SEINET9765342 Image available Equisetum hyemale Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC112241  Equisetum laevigatum Lowell Ahart 2013-4-20 18551 Butte In Wilson Creek, about 100 yards 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 miles (air) northeast of Honcut. 49 Comment
  CHSC35321  Equisetum telmateia subsp. braunii M. S. Taylor; K. Tharp 1982-4-8 4288 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitor's Center, Oroville. 243 Comment
  CAS-BOT-BC204452  Eragrostis cilianensis Lowell Ahart 1981-9-5 3063 Butte Honcut 35 Comment
  CAS-BOT-BC204455  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville Comment
  SEINET10562503  Eragrostis cilianensis A. Arthur Heller 1914-6-2 Heller 11478 Butte Hills 8 miles north of Oroville. Comment
  UCD63884  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34675 Butte Sierra Nevada, lower foothills, eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  JEPS113670  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  UC203852  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte near the base Table Mountain (8 mi n of Oroville) Comment
  SEINET10873979  Eremocarpus setiger Mary Susan Taylor 1977-6-25 Taylor 1372 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC35048  Eremogone cliftonii R. Schlising 1980-7-11 3882 Butte NE part of county at south end of Walker Plains. 1536 Comment
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Jul 8 2014
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  CAS-BOT-BC131513  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls 609 Comment
  CHSC46917  Erigeron bonariensis Lowell Ahart 1974-11-9 678 Butte On levees around a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC110116  Erigeron canadensis L. P. Janeway 2012-10-18 11082 Butte Sacramento Valley. Along Hwy 70 at Wheelock Road/Coal Canyon Road. 136 Comment
  CHSC26623  Erigeron canadensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC62426  Erigeron canadensis L. P. Janeway 1993-9-7 4586 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along dirt road. 298 Comment
  CHSC43178  Erigeron lassenianus var. lassenianus Robert Banchero 1981-6-20 523 Butte Ca 1 mi w of Jones meadow. 1810 Comment
  CAS-BOT-BC295776  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-6-26 27525 Butte Near Pulga 365 Comment
  CAS-BOT-BC300277  Erigeron strigosus var. strigosus Lowell Ahart 1988-6-29 6111 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock 548 Comment
  CHSC116319  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte In crack between building and pavement, building of Casey's Auto Repair, east of the intersection of Spruce Street and Washington Street, Gridley. 27 Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  CHSC46695  Eriogonum lobbii R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4642 Butte N part of county, on Snow Mountain ridge; in open area of decomposing andisitic outcrops. 2072 Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  CAS-BOT-BC263200  Eriogonum marifolium var. marifolium A. A. Heller 1928-7-25 14700 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  CAS-BOT-BC269849  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Roadside banks of Lower Feather River Canyon (Rte. 70) 304 Comment
  CAS-BOT-BC269856  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 839 Butte West of Pentz Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  CHSC41366  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-7-11 4136 Butte NE part of county, serpentine outcrop along Coyote Gap Road, ca. 0.5 mi S of Coyote Gap. 1219 Comment
  UCD163429  Eriogonum umbellatum var. ahartii Robert E. Preston 2015-7-17 3011 Butte Along Concow Rd, 1.8 mi NE of Concow Reservoir. 866 Comment
  SEINET11935016  Eriogonum umbellatum var. speciosum R. A. Schulising 1981-1 4136 Butte NE part of county,T22N,R5E,sec.2;serpentine outcrop along Coyote Gap Road,ca .5mi S of Coyote Gap 1219 Comment
  UC1594628  Eriogonum ursinum Lowell Ahart 1992-7-29 6884 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 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
  JEPS109906  Eriophorum gracile Dean W. Taylor 2006-8-17 19609 Butte Keyser Creek; West Branch Feather River watershed; boggy fen with patterned ground 1524 Comment
  CHSC11838  Eriophyllum lanatum E. B. Copeland 1930-7-11 492 Butte Jonesville. 1550 Comment
  UC1609157  Eriophyllum lanatum var. croceum Vernon H. Oswald and Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  CAS-BOT-BC308163  Eriophyllum lanatum var. grandiflorum Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC308168  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC99548  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2008-6-15 9414 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  RSA92670  Eriophyllum lanatum var. grandiflorum F. W. Peirson 1926-6-21 6766 Butte About 10 miles east of Chico on Humboldt Road Comment
  JEPS115234  Erodium brachycarpum Lowell Ahart, John Dittes 2009-3-20 15509 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  JEPS117895  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  SEINET10495135  Erodium obtusiplicatum Mary Susan Taylor 1975-2-16 Taylor 374 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD72992  Eryngium vaseyi 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
  UCSB70416  Eryngium vaseyi Ferren, Wayne 1989-6-15 Butte Vina Plains Reserve Comment
  CHSC9287  Erysimum capitatum var. capitatum D. C. Burns 1971-4-3 116 Butte At base of cliff, ca. 3.5 mi e of Jarbo, (2.5 mi w of 1st bridge that crosses the n fork of the Feather River). 609 Comment
  CHSC61182  Erythranthe bicolor Vernon H. Oswald 1993-5-18 5400 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
  CHSC31872  Erythranthe cardinalis L. Ahart 1975-7-19 904 Butte Along North Honcut Creek on moist soil; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33342  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, ca. 2.5 mi e of Lower Jct of Zink and Bald Rock Rd, 0.5 mi from the road. 975 Comment
  CHSC105166  Erythranthe glaucescens Christopher T. Ivey 2007-3-31 370 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC108801  Erythranthe glaucescens Lowell Ahart 2012-4-9 17850 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC1789  Erythranthe glaucescens H. Summers 1929-3-25 Butte Butte Creek. Comment
  CHSC85410  Erythranthe glaucescens John Dittes; Josephine Guardino 1992-5-7 480 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; south-facing slope, north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC44736  Erythranthe guttata R. Banchero 1980-6-17 244 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC42716  Erythranthe microphylla Lowell Ahart 1987-6-9 5735 Butte On a sand bar on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
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Jun 25 2013
  CHSC3370  Erythranthe nasuta Robert L. Smith 1966-3-1 45 Butte Upper Bidwell Park. 7 miles NE of Chico. Comment
  CHSC13514  Erythranthe pulsiferae N. E. Long 1974-5-1 Butte Scarce alongside dirt road, ca. 300 yards off Cohasset Highway and ca. 12 mi n of Chico. 274 Comment
  CAS-BOT-BC150204  Erythranthe pulsiferae Lowell Ahart 1983-6-26 4161 Butte Along the edge of Bean Creek Road, about 4 1/2 miles south of Little Bald Rock, about 17 1/2 miles north-east of Oroville 600 Comment
  CHSC10826  Erythronium multiscapideum Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  JEPS119740  Erythronium multiscapideum Lowell Ahart 2012-3-23 17787 Butte About 100 yards east of Big Chico Creek, about 300 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10528914  Erythronium multiscapideum A. Arthur Heller 1939-4-8 Heller 15368 Butte Rather plentiful on a serpentine outcrop about 4 miles east of Magalia on the Coutoleno road. Transition Life Zone. Comment
  POM125702  Eschscholzia californica var. peninsularis C. C. Bruce 1897-04 2020 Butte Foot hills, near Iron Canyon Comment
  CAS-BOT-BC419497  Eschscholzia lobbii Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  CHSC10656  Eschscholzia lobbii Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10476227  Eschscholzia lobbii Mary Susan Taylor 1975-4-26 Taylor 509 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CAS-BOT-BC312032  Eucephalus breweri J. D. Jokerst; M. S. Taylor 1979-7-21 2165 Butte On trail to Humboldt Peak on Humboldt Summit 2133 Comment
  CHSC28492  Eucephalus breweri M. S. Taylor; J. Jokerst 1979-7-21 2165 Butte On trail to Humboldt Peak, on Humboldt Summit. 2133 Comment
  CHSC236  Euonymus occidentalis V. Holt; M. Underhill 1952-7-7 Butte Magalia. 670 Comment
  CHSC115428  Euphorbia peplus Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  CHSC47419  Euphorbia peplus Lowell Ahart 1976-2-28 1016 Butte In a garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC48380  Euphorbia peplus Vernon Oswald 1987-3-26 2297 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. Between some ponds in dredger tailings. 73 Comment
  JEPS117268  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  RSA300178  Festuca californica var. californica J. T. Howell, Gordon H. True 1967-6-11 42564 Butte On NW side of Feather River Canyon near Pulga Bridge. 427 Comment
  CHSC74043  Festuca idahoensis H. Durio 1995-6-28 Butte Ca 1.5 mi NW of Strawberry Valley, just E of Lewis Flat and W of boat ramp at Sly Creek Reservoir. In old mined site. 1133 Comment
  CHSC102413  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 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. 242 Comment
  CHSC12611  Ficus carica S. Posner 1972-9-24 Butte Ca. 150 yds S of Humbug Road, 3 mi E of Skyway. Comment
  CHSC77602  Ficus carica L. P. Janeway 2000-3-29 6642 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  SEINET223406  Filago gallica B. Ertter, J Strachan 1980-5-5 3265 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  JEPS95914  Fimbristylis autumnalis Lowell Ahart and Vernon H. Oswald 1999-8-13 8145 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
  CHSC50552  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4343 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  CAS-BOT-BC437084  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CAS-BOT-BC55655  Frangula purshiana Clarence R. Quick 1952-6-29 52 -92 Butte Near spring, 0.3 miles west of Coyote Gap on Mile Creek Road Comment
  CHSC34146  Frangula purshiana L. Ahart 1981-9-15 3151 Butte Along edge of rd, ca. 1/2 mi n of Lost Creek Reservoir, along Pinkard Creek. 1100 Comment
  CHSC62580  Frangula rubra B. Castro 1993-7-7 471 Butte Ca 2.5 mi SSW of Big Bar Mtn, on gentle SE-facing slope on the N side of USFSRd 22N84, at uphill edges of serpentine outcrop among grasses. 960 Comment
  SEINET10935662  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca 50 feet E of Cohasset Hwy, ca 8 miles N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 135 Comment
  RSA725003  Fraxinus latifolia L. Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  JEPS33409  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte in Pinkston Canyon, Big Bend Road to Yankee Hill, close to junction of new US 40-A w old road at upper end of Feather River damsite Yankee Hill; Pinkston Canyon 548 Comment
  CHSC2279  Fritillaria eastwoodiae R. Carter 1964-3-23 68 Butte 1/4 mi. down Truex Rd. off Hwy. 40 A on S side of road. 152 Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CAS-BOT-BC130426  Fritillaria pluriflora Mrs. C. C. Bruce 1897-2-1 2023 Butte Near Chico Comment
  CDA34110  Galium aparine L. Ahart 2009-4-17 15548 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC109850  Galium bolanderi L. P. Janeway 2012-6-23 10886 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC31421  Galium bolanderi L. Ahart 1980-9-10 2630 Butte Ca. 1 mi NE of Millsap Bar, ca. 25 mi NE of Oroville. 900 Comment
  CHSC28379  Galium grayanum M. S. Taylor; J. Jokerst 1979-7-21 2150 Butte Humboldt Peak, at Butte County-Plumas County line (Humboldt Summit). 2151 Comment
  JEPS27421  Galium grayanum F. Ehrendorfer 1959-7-22 5937 Butte summit above Jonesville (ridge e of pass, Butte-Plumas Co., type locality) 2042 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC75301  Galium murale Lowell Ahart 1999-5-24 8077 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
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Jan 17 2007
  CHSC111972  Galium parisiense Lowell Ahart 2012-6-2 18144 Butte South edge of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  JEPS110290  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  SEINET10500736  Galium porrigens var. tenue Mary Susan Taylor 1980-3-1 Taylor 2349 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
  CHSC61010  Galium spurium var. echinospermum Lowell Ahart 1993-6-20 6988 A Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC32845  Galium tricornutum F. Chmiel 1981-4-23 6 Butte Ca. 20 ft off Hwy 99, ca. 6 mi N of Chico. 152 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC33790  Galium triflorum M. S. Taylor 1981-5-14 3714 Butte N side of Four Mile Ridge-22N33, S of Sly Creek, ca. 1.5 mi NE of Mountain House on Oroville-Quincy Hwy. 853 Comment
  JEPS98564  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte 5 air miles SW of Oroville (margin of the Thermalito Afterbay, W side of the access road to the boat ramp, W side of Larkin Road) 42 Comment
  JEPS120916  Gamochaeta ustulata Lowell Ahart 2013-5-27 18719 Butte About 50 yards S of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  UCD121118  Garrya flavescens D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC169940  Garrya fremontii Lowell Ahart 1985-1-27 4835 Butte East of Magalia, along the road 750 Comment
  CHSC38447  Garrya fremontii Vernon Oswald 1983-2-16 80 Butte Upper Bidwell Park, Chico, near th e end of the strip of riparian woodland bordering the n edge of Hooker Oak Recreation Area. 80 Comment
  SEINET5765228  Garrya fremontii J. T. Howell 1975-6-15 51082 Butte 2 miles from paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC282598  Gastridium phleoides Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10831689  Gastridium phleoides Lowell Ahart 1977-5-21 Ahart 1390 Butte On dry soil on bottom of a small wash. Peter Ahart Ranch, Honcut. Valley grassland. 50 Comment
  CHSC31051  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC94246  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  CHSC51885  Gentianopsis simplex L. P. Janeway 1988-7-29 3135 Butte Near W Br Feather River at crossing of rd into Coon Hollow. Meadow. 1615 Comment
  JEPS119546  Geranium molle Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17858 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 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
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC2433  Githopsis pulchella subsp. campestris R. Carter 1965-5-15 201 Butte Found on E side of Hwy. 32, 10.7 mi. NE of 99E overpass at Chico, growing on dry rocky hillside 25' from road. 304 Comment
  UC764582  Githopsis pulchella subsp. campestris R. F. Hoover 1937-5-18 2236 Butte 3 mi n Chico Comment
  CDA11953  Githopsis specularioides G. F. Hrusa, J. Hart 1989-4-15 5917 Butte Sierra Nevada; Summit of North Table Mountain. Comment
  CHSC113223  Githopsis specularioides Lowell Ahart 2014-5-2 19434 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC116320  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS122248  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UC1562276  Glinus lotoides Lowell Ahart 1990-7-2 6537 Butte near McCabe Creek (below the high water line of Lake Oroville, about 1/2 mi sw of the Enterprise Bridge across Lake Oroville) 243 Comment
  UC1563266  Glinus lotoides unknown 1990-10-5 Butte below the high water line of Lake Oroville (about 1/4 mi sw of the Enterprise Bridge across Lake Oroville, on bottom of McCabe Creek); McCabe Creek 228 Comment
  SEINET10537440  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  JEPS98452  Glyceria declinata Lowell Ahart 2000-5-21 8377 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
  JEPS120604  Gnaphalium palustre Lowell Ahart 2013-11-17 19258 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC117419  Gratiola ebracteata Lowell Ahart 2016-5-30 20884 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
  CHSC31870  Gratiola ebracteata L. Ahart 1974-4-14 411 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD132497  Grindelia camporum M. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 1/2 mile off Pentz Road. Comment
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  UC175440  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte n Oroville (Table Mountain Olive Ranch); Table Mountain Olive Ranch Comment
  RSA302650  Grindelia hirsutula var. davyi J. R. Shevock 1972-5-19 1756 Butte Hwy 70, Feather River Canyon. 21 Comment
  JEPS119728  Gymnocladus dioicus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chico. Comment
  UC177589  Hackelia californica H. M. Hall 1914-7-27 9789 Butte Humboldt Road; Sierra Nevada Mountains 2042 Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CAS-BOT-BC302419  Hazardia whitneyi J. D. Jokerst 1980-10-13 396 Butte Along edges of Jordan Hill Road 7.5 miles north of jct. with Concow Road, 1 mile SE of Sawmill Peak 944 Comment
  CAS-BOT-BC306544  Helenium bigelovii Clarence R. Quick 1966-7-11 66 -49 Butte At west end of Concow Meadow, about 6 m. north of Jarbo Gap 1097 Comment
  CDA35648  Helenium bigelovii J. R. Keck Jr. 1985-7-25 PDR# 331426 Butte Jones Meadow, near Stirling City. Lassen National Forest. 0 Comment
  CHSC110325  Helenium puberulum B. Castro; Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Highway 99 and 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal.. On E side of canal abt 120 ft in from toe of W levee. 32 Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  UC129380  Helianthella californica subsp. nevadensis Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CHSC31094  Helianthella californica var. nevadensis Herb Allen McLane 1980-4-25 15 Butte 1 mi sw of Ponderosa Dam, Plumas National Forest. 390 Comment
  CHSC116003  Heliotropium europaeum Lowell Ahart 2015-10-9 20542 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC117400  Heliotropium europaeum Lowell Ahart 2016-5-30 20888 Butte On the bottom of a deep wash (west of where we removed gravel), 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
  CHSC97756  Heliotropium europaeum Lowell Ahart 2007-11-3 14575 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  JEPS119737  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC92613  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CAS-BOT-BC309783  Hemizonia congesta subsp. luzulifolia A. A. Heller 1913-10-7 11147 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CAS-BOT-BC309788  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte Near Chico Comment
  CHSC51855  Hemizonia congesta subsp. luzulifolia L. P. Janeway 1986-10-19 1943 Butte Between hwy 99 and Thermalito Forebay Picnic Ground. 67 Comment
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  RSA770728  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15585 Butte Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg ) of Gridley 34 Comment
  CHSC34205  Herniaria hirsuta subsp. hirsuta J. D. Jokerst 1981-9-27 1482 Butte Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. E bank of Sacramento River. Comment
  CHSC45571  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1978-6-17 1778 Butte Along roadways, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC50827  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1990-7-17 4362 Butte Paradise Lake, ca. 3 miles north of Magalia. At the culvert on Coutolenc Creek. 777 Comment
  UCD73011  Hesperevax acaulis 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
  CHSC94089  Hesperevax acaulis var. robustior R. Fischer 2005-3-27 680 Butte Chico. Collection from Bidwell Park along the lower South Rim Trail just above old pistol range. 76 Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CDA34983  Heteranthera rotundifolia John 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, north of Biggs, 2.5 mi. west of Hwy 99, 955 Butte City Hwy. (Hwy 162). 0 Comment
  CHSC42135  Heterocodon rariflorum Lowell Ahart 1984-7-19 4727 Butte In 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 north-east of Stirling City. 1371 Comment
  SFV11711  Heterocodon rariflorum M. L. Vincent 1968-6-10 841 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  SEINET10840495  Heterocodon rariflorum Mary Susan Taylor 1978-7-21 Taylor 1828 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC143637  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC13840  Heteromeles arbutifolia S. Posner 1972-10-12 Butte South slope Big Chico Creek, across from Golf Course, near firing range, Bidwell Park, Chico. Comment
  CHSC40325  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 Comment
  UC725600  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mi above Pentz (on the Paradise grade) Comment
  JEPS103333  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CHSC88083  Heuchera micrantha var. erubescens R. D. Fischer 2004-4-2 169 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Big Chico Creek 25' from creek. E. bank below 10 Mile House Road. 213 Comment
  RSA0062976  Heuchera micrantha var. erubescens L. Ahart 2009-5-23 15738 Butte East side of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CHSC44570  Holcus lanatus Lowell Ahart 1979-6-9 1930 Butte East of Kunkle Creek, about 2 miles south-east of Paradise. 457 Comment
  CHSC44874  Holocarpha virgata Lowell Ahart 1979-9-25 2021 Butte About 1/2 mile east of Oregon City, about 7 miles north of Oroville. 365 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
  CAS-BOT-BC320294  Holocarpha virgata Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile east of Oregon City 400 Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CHSC65907  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald 1996-4-20 7398 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC65995  Hordeum depressum Vernon H. Oswald 1996-5-9 7550 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CAS-BOT-BC285086  Hordeum marinum subsp. gussoneanum Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC101125  Hordeum murinum subsp. glaucum Lowell Ahart 2009-5-8 15670 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC54388  Hordeum murinum subsp. leporinum M. Bailey 1991-3-18 639 Butte On top of a hill northwest of Wallis Pond, Butte College campus. 106 Comment
  CDA25942  Horkelia californica subsp. dissita L. Ahart 1998-6-3 8012 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM147760  Horkelia tridentata E. E. Stanford 1927-5-21 382 Butte 4 miles SE of Avery 1220 Comment
  CAS-BOT-BC536265  Horkelia tridentata var. tridentata Javier Penalosa 1962-6-18 2470 Butte Near confluence of French and Peavine Creeks 640 Comment
  CHSC45283  Hosackia incana Vernon Oswald 1987-6-29 3040 Butte Bald Mt., 0.4 mi s of the Lookout. 1706 Comment
  CHSC41315  Hosackia oblongifolia var. oblongifolia S. C. Morey 1983-7-22 551 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC885  Hosackia pinnata L. Nelson 1935-5-25 Butte Cohasset. 609 Comment
  CHSC42943  Hosackia stipularis var. ottleyi Lowell Ahart 1987-7-8 5804 Butte Near Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC42583  Hydrocotyle umbellata Vernon Oswald 1985-6-26 1865 Butte Oroville Wildlife Area ca. 0.6 mi s of the Hwy 162 entrance. 36 Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC13712  Hypericum anagalloides M. S. Taylor 1974-9-14 321 Butte Abundant ca. 1/2 mi n of Bidwell Park Rd, opposite Alligator Hole, on w edge of burn, Upper Bidwell Park, Chico. Comment
  UC1442629  Hypericum anagalloides Lowell Ahart 1978-9-16 Butte along North Honcut Creek Peter Ahart Ranch; Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC410223  Hypericum concinnum John Thomas Howell 1962-6-16 37595 Butte Feather River West Branch sw of Nelson Bar 304 Comment
  CHSC3323  Hypericum concinnum Robert L. Smith 1966-5-22 48 Butte Paradise, 5 miles SW of Post Office. 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
  RSA718779  Hypericum concinnum L. P. Janeway 2006-7-9 8805 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  UC600532  Hypericum formosum var. scouleri E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  JEPS117557  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  JEPS121992  Hypericum scouleri Lowell Ahart 2014-7-13 19661 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CAS-BOT-BC508346  Ipheion Lowell Ahart 1988-3-8 5929 Butte Peter Ahart Ranch about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 38 Comment
  SEINET10469746  Iris hartwegii Mary Susan Taylor 1979-5-4 Taylor 1982 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC52480  Iris macrosiphon Jan M. Karaz 1979-5-13 17 Butte 1.2 mi N of Forest Ranch on hwy 32 at top of the ridge. Comment
  CHSC79863  Iris macrosiphon Leanna Brown; Shirley Innecken 1999-3-9 77 Butte Paradise Flume, north from parking area. 439 Comment
  CHSC84916  Iris macrosiphon Ron P. Garcia 1995-4-23 20 Butte E side of Coutolenc Rd, 0.1 mi n of Skyway, ca. 0.5 mi n of Magalia. 707 Comment
  SBBG40332  Iris tenuissima J. Ingram, A. Ingram 1960-4-6 500 Butte Endicot Springs on Neal Rd, S of Paradise Comment
  CAS-BOT-BC69902  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of 60 Comment
  CAS-BOT-BC69950  Isoetes howellii Lowell Ahart 1975-6-20 s.n. Butte Peter Ahart Ranch, about two mi. n. of Honcut. Comment
  CDA42452  Isoetes howellii T. C. Fuller 1958-4-15 4793 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC29222  Isoetes nuttallii M. S. Taylor 1980-3-28 2404 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave, ca. 1 1/4 mi e of Hwy 99. 76 Comment
  SEINET10530328  Isoetes nuttallii Mary Susan Taylor 1980-5-27 Taylor 2678 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
  SEINET10470698  Isoetes nuttallii Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4046 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
  SEINET10874662  Isoetes nuttallii Mary Susan Taylor 1975-4-26 Taylor 516 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET223336 Image available Isoetes nuttallii B. Ertter, J Strachan; L. Ahart 1980-5-7 3289 Butte Ca 2.5 mi NNE of Honcut between Oroville and Marysville 31 Comment
  CAS-BOT-BC112445  Isolepis cernua Lowell Ahart 1989-5-23 6270 Butte In Dutch Ravine ca. 1/8 mi N of Swedes Flat Rd, ca. 1 1/2 mi E of the Oroville Bangor Hwy 426 Comment
  JEPS120047  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC69474  Jensia rammii James D. Jokerst 1982-5-28 1584 Butte Concow Basin W of Concow Creek (and Concow Rd.) ca. 0.25 mi N of Concow Lake. 609 Comment
  JEPS114387  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  CDA33218  Juncus articulatus L. P. Janeway, Macia Waterway, Martin Lechowicz 2006-8-3 8823 Butte Northern High Sierra Nevada; Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek Comment
  CHSC42379  Juncus articulatus Lowell Ahart 1987-5-27 5696 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS124272  Juncus articulatus subsp. articulatus Lowell Ahart 2015-11-18 20666 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  UC1609090  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte about 1 1/2 mi n and 3 mi e of Honcut (about 12 mi se of Oroville, on w side of Dunstone Road); Dunstone Road 60 Comment
  CHSC112909  Juncus capitatus B. Castro; Robin Carter 2011-4-29 1871 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC6111  Juncus capitatus A. R. Jaegel 1968-4-19 153 Butte 1 mi s of Cherokee on Cherokee Rd. Comment
  UC1609269  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River); s of Fall River 1036 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
  CHSC28396  Juncus drummondii J. D. Jokerst 1979-7-21 302 Butte In damp, rocky draw. North side of Humboldt Peak. 2103 Comment
  CHSC113398  Juncus effusus subsp. pacificus Lowell Ahart 2014-7-4 19554 Butte On the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  JEPS113833  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville 166 Comment
  CHSC78336  Juncus ensifolius Lowell Ahart 2000-6-27 8523 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC113385  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-2 19546 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC61348  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-7-29 7120 Butte About 2 1/2 miles northeast of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  UC1564807  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-7-12 3848 Butte 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  SEINET10472447  Juncus howellii Lowell Ahart 1983-9-17 Ahart 4427 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CAS-BOT-BC110145  Juncus leiospermus var. ahartii Lowell Ahart 1974-6-5 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC110142  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 s.n. Butte Sierra Nevada. Table Mountain, ca. 7 miles north of Oroville. 400 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
  CHSC93497  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12585 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 395 Comment
  CHSC93503  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12584 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  RSA337381  Juncus leiospermus var. leiospermus L. Ahart 1984-5-7 4589 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  POM183194  Juncus nevadensis H. F. Copeland 1930-7-27 1358 Butte Jonesville. Blueberry Meadow. 1524 Comment
  UC600800  Juncus nevadensis H. F. Copeland 1930-7-25 Butte Jonesville Comment
  JEPS121930  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS94957  Juncus orthophyllus Lowell Ahart 1997-7-11 7748 Butte ca. 2 mi. (air) s.w. Bald Mt. (ca. 9 mi. by rd. from Stirling City or ca. 2 mi. (air) n.e. of Stirling City, s.e. of Cold Creek, n. of the dirt rd.) 1219 Comment
  CHSC28618  Juncus patens M. S. Taylor 1979-10-12 2243 Butte Big Chico Creek, at end of Upper Bidwell Park, ca. 10 mi ne of Chico. 243 Comment
  UC1586590  Juncus patens Vernon H. Oswald and Lowell Ahart 1991-5-31 4638 Butte s side Thermalito Diversion Pool (and on the n side of Oroville Dam Blvd East, between the 4 and 5 mi posts (ca 4.5 mi)); Lake Oroville State Recreation Area, Dan Beebe Trail 85 Comment
  JEPS113860  Juncus tenuis Lowell Ahart 2007-7-11 14293 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC30358  Juncus triformis James D. Jokerst 1980-6-14 830 Butte Big Bald Rock, N of Lake Oroville, E of town of Berry Creek. Comment
  CHSC96542  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC96907  Juncus triformis Lowell Ahart 2007-6-12 14075 Butte Seeps, about 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC99316  Juncus trilocularis Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  CHSC47574  Juncus uncialis Lowell Ahart 1978-5-1 1695 Butte On the bottom of a small vernal pool in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1495745  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte about 2 mi n and 0.5 mi e Honcut (Peter Ahart Ranch) 50 Comment
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  SEINET10531628  Juniperus californica Lowell Ahart 1983-4-10 Ahart 3922 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC101700  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC46515  Keckiella breviflora var. glabrisepala Lowell Ahart 1989-5-31 6329 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC31449  Keckiella lemmonii L. Ahart 1980-9-10 2644 Butte Along the edge of the rd ca. 7 mi e of Milsap Bar, ca. 32 mi ne of Oroville. Comment
  CHSC50687  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte Near the Forbestown Generator, on the south-east side of the Forbestown Reservoir. 487 Comment
  CHSC30528  Koeleria phleoides N. E. H. Prouty 1980-4-28 156 Butte Near junction of Pentz Rd. with Pentz-Magalia Hwy. 207 Comment
  CHSC43728  Kumlienia hystricula Vernon Oswald 1984-5-23 1201 Butte Near the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 512 Comment
  CHSC25446  Kyhosia bolanderi Marc Hayes; Warner 1977-9-11 77 Butte Ca. 150 m n of Humboldt Road between Butte Meadows and Jonesville, exactly 8.4 mi from the junction with Hwy 32. 1219 Comment
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  CAS-BOT-BC274279  Lachnagrostis filiformis Lowell Ahart 1986-11-14 5468 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
  JEPS95527  Lactuca canadensis Lowell Ahart 1994-10-23 7568 Butte 4 mi W and 0.5 mi N of Stirling City (3 mi N of De Sabla reservoir) 853 Comment
  CHSC39018  Lactuca serriola J. D. Jokerst 1983-7-21 1927 Butte Top of North Table Mt., west edge ca 1/3 mile north of Beatsin Hollow. Comment
  POM181475  Lactuca serriola H. F. Copeland 1923-1 864 Butte Nelson. Comment
  CHSC27237  Lagerstroemia indica P. Moyer 1971-9-25 3 Butte CSUC campus. W side Bus-Soc Sci. Bldg. 60 Comment
  CAS-BOT-BC341296  Lagophylla glandulosa R. F. Hoover 1965-10-16 9719 Butte Deer Creek road east of Chico Comment
  CHSC25273  Lagophylla glandulosa M. S. Taylor 1977-6-27 1396 Butte Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC26761  Lagophylla glandulosa M. S. Taylor; M. Hayes 1977-8-16 1438 Butte On both sides of Williams Rd, ca. 300 yds n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC31536  Lagophylla glandulosa L. Ahart 1979-5-20 1879 Butte On bottom of wash. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC46947  Lagophylla glandulosa Lowell Ahart 1977-9-20 1584 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC84326  Lagophylla glandulosa Lowell Ahart 2003-8-3 10465 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  JEPS19936  Lagophylla glandulosa C. C. Parry 1881-11-1 Butte Chico Comment
  UC828870  Lagophylla glandulosa A. A. Heller 1914-5-14 11401 Butte treeless plain near Clear Creek Comment
  CAS-BOT-BC341309  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  POM194883  Lagophylla glandulosa H. M. Hall 1914-7-17 9753 Butte Neal Grade, between Chico and Paradise. 213 Comment
  CHSC38370  Lagophylla ramosissima subsp. ramosissima Vernon Oswald 1983-5-27 564 Butte Upper Bidwell Park. Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  CHSC749  Lamium amplexicaule R. Carter 1964-3-17 48 Butte 7 mi E of Oroville, 250 yds. up Wakefield Dr. off Feathervale on S side rd. 121 Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  CHSC90582  Lasthenia californica C. A. Bordin 1983-4-14 13 Butte Ca. 4 mi e of Durham and 0.3 mi w of Hwy 99 to Durham Dayton Hwy and ne corner of Oro Chico Hwy intersection. 54 Comment
  JEPS108736  Lasthenia californica Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
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Jan 19 2011
  UC195381  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte between Durham and Nelson (in low field by creek); Butte Creek 53 Comment
  CHSC2425  Lasthenia fremontii R. Carter 1965-3-13 162 Butte On North Table Mountain, these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds. from rim. 304 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC8123  Lasthenia fremontii J. G. Moore 1969-3-25 68 Butte Upper Bidwell Park, 200 yds. w of rifle range, 100 yds. n of golf course. Chico. 76 Comment
  JEPS119708  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UCD80079  Lasthenia fremontii CNPS SN Foothill Team 2005-5-4 SNFN 0200 c Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  SEINET10475352  Lasthenia fremontii Lowell Ahart 1983-5-12 Ahart 3974 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC30059  Lasthenia glaberrima R. A. Schlising 1980-4-27 3575 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  CHSC46247  Lasthenia glaberrima Vernon Oswald 1989-4-27 3750 Butte Wurlitzer Unit, Vina Plains Preserve. North of the woodland and E of Cana-Pine Creek Rd. 56 Comment
  SD116537  Lathyrus angulatus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3277 Butte Peter Ahart Ranch ca. 2.5 miles NNE of Honcut between Oroville & Marysville, dried vernal pool previously plowed as grainfield, now reverted, rocky; higher ground around pool 29 Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  CAS-BOT-BC213290  Lathyrus sulphureus Clarence R. Quick 1952-6-30 52 -96 Butte Ridge top, Big Bar Mt. east of Pulga, Sierra Nevada Comment
  UCR190827  Lathyrus vestitus 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
  CDA42954  Lavatera cretica L. Ahart 2013-5-21 18702 Butte On the west side of Highway 99E, 30 yards north of W. Rio Bonito Road, about 1 mile northeast of Biggs. Comment
  HSC43118  Layia fremontii Maralyn O'Meara 1974-4-20 269 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  SEINET11447713 Image available Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  CAS-BOT-BC321782  Layia fremontii John Thomas Howell 1976-4-2 51557 Butte About 2 miles SE of Chico 60 Comment
  CHSC34086  Lemna minor J. D. Jokerst 1981-3-29 1271 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC49693  Lemna minuta Vernon Oswald 1984-2-25 1084 Butte Upper Bidwell Park, Chico, ca. halfway between Upper Park Rd. and the north rimrock, slightly e of Day Camp. Near the head of a ravine. 152 Comment
  CAS-BOT-BC534638  Lemna minuta Lowell Ahart 1975-1-9 s.n. Butte Sierra Nevada. 2 miles north and 3 miles east of Honcut. Foothill woodland. 200 Comment
  JEPS118322  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 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
  UCD73331  Leontodon saxatilis subsp. longirostris Chuck Hughes 2008-3-18 22 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  CAS-BOT-BC339121  Leontodon saxatilis subsp. saxatilis John Thomas Howell; Gordon H. True 1967-6-13 42593 Butte Oroville 51 Comment
  RSA300953  Lepechinia calycina D. C. Michener 1982-7-28 4139 Butte CA 32 ca 9.3 miles northeast of jc with CA 99 near Chico. Comment
  UCSC010731  Lepechinia calycina Brett Hall, Annee Hall 1991-1 BH 115 .91 Butte Between Chico and Forest Ranch Comment
  CHSC46285  Lepidium campestre Vernon Oswald 1989-5-16 3769 Butte Cohasset Rd, 1.2 mi s of Cohasset School. Roadside. 731 Comment
  CHSC46255  Lepidium dictyotum var. dictyotum Vernon Oswald 1989-4-10 3731 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  CHSC65989  Lepidium didymum Vernon H. Oswald 1996-5-9 7548 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. On the levee at the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  UCD115775  Lepidium nitidum L. Ahart 1973-2-21 153 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CAS-BOT-BC12803  Lepidium perfoliatum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  UCD115856  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC1594675  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte near s side Oroville Dam spillway (on the top of Oroville Dam); Oroville Dam 274 Comment
  CDA32441  Leptochloa fascicularis Margaret Bellue Butte Afton Rd., near Biggs. 0 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
  POM74009  Leptosiphon androsaceus C. C. Bruce 1897-04 1966 Butte [No locality information provided] Comment
  CHSC31377  Leptosiphon bicolor Roberta A. Boer 1980-4-13 10 Butte Ca. 1/4 mi w of Foothill Blvd., 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  RSA715849  Leptosiphon bicolor L. P. Janeway 2005-3-10 8353 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  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
  CHSC35973  Leptosiphon ciliatus M. S. Taylor 1982-6-24 4740 Butte In meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  CHSC96995  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1.0 air km west of Mountain House. 884 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CAS-BOT-BC341796  Lessingia nemaclada Rimo Bacigalupi; G. T. Robbins 1955-7-15 5305 Butte Rim of Butte Creek Canyon, along Chico-Paradise road, about 5 miles below and southwest of Paradise 304 Comment
  CHSC30277  Lessingia nemaclada M. S. Taylor 1979-8-4 2171 1/2 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC39349  Lessingia nemaclada Lowell Ahart 1983-6-30 4179 Butte Along the dirt road, about 1 1/2 miles north-east of Concow Res. 550 Comment
  CHSC69448  Lessingia nemaclada Lowell Ahart 1997-9-6 7887 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  JEPS17913  Lessingia virgata Rimo Bacigalupi with G. T. Robbins 1955-7-22 5442 Butte 2.5 mi s Oroville (n-facing hillside along Calif. Hwy. no. 24, at junction of road to Palermo) 48 Comment
  UCD134097  Lessingia virgata L. Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6594  Lewisia rediviva G. Nielsen 1968-4-20 Butte On Table Mt. 5 mi s of Cherokee on rd. over Table Mr. 609 Comment
  CHSC42025  Ligusticum grayi Lowell Ahart 1986-7-2 5339 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
  UCR231506  Lilium Anna M. Hurlbutt 2009-8-7 023 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  UC478545  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CHSC46217  Lilium pardalinum subsp. shastense Pauleen Broyles 1986-8-5 981 Butte Ca. 0.6 km n of road jct below Humboldt Peak. Along Scotts John Creek. 1860 Comment
  CHSC49658  Lilium pardalinum subsp. shastense Vernon Oswald 1983-7-6 827 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CAS-BOT-BC133044  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CAS-BOT-BC133052  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  UCD116443  Limnanthes H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  CHSC24949  Limnanthes alba V. L. Keeran 1976-4-21 9 Butte Ca. 115 m e of Cohasset Road and 1.15 km sw of Cohasset. 400 Comment
  CAS-BOT-BC110624  Limnanthes alba Lowell Ahart 1980-4-28 2113 Butte Peter Ahart Ranch, near Honcut. 50 Comment
  POM181724  Limnanthes alba H. F. Copeland 1923-4-12 618 Butte near Biggs Comment
  POM86187  Limnanthes alba R. M. Austin 1883-05 s.n. Butte No locality information provided. Comment
  JEPS104300  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 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
  CHSC38154  Limnanthes douglasii subsp. nivea J. D. Jokerst 1983-5-12 1767 Butte Along the intermittent creeks. Top of North Table Mountain, north of Cherokee Rd. 365 Comment
  JEPS110435  Limnanthes douglasii subsp. nivea Lowell Ahart 2006-4-28 12542 Butte Along a small stream, south part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 320 Comment
  JEPS89153  Limnanthes douglasii subsp. nivea A. A. Heller 1914-4-3 11261 Butte 8 mi nw Oroville Comment
  CHSC111383  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte On the bottom of a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  RSA614435  Limnanthes douglasii subsp. rosea K. L. Chambers 1962-4-21 2113 Butte Hwy. 99E, 11.6 mi, N. of its junction with Hwy. 32 in Chico. Comment
  SBBG17309  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Rd near Table Mtn Comment
  CHSC44092  Limnanthes floccosa subsp. californica K. R. Stern 1988-3-6 8465 Butte City of Chico. Ca 10 yds s of Humboldt Rd and ca 1/4 mi w of Bruce Rd. 73 Comment
  CHSC84871  Limnanthes floccosa subsp. californica C. Boggs 2003-3-20 46 Butte Dove Ridge Preserve, north of Gold Run Creek. Comment
  CHSC67557  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte Ca. 100 m SE of Keefer Rd. at edge of basalt formation (= Cohasset Ridge). Comment
  SEINET10496789  Linanthus bicolor Mary Susan Taylor 1980-4-16 Taylor 2491 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  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
  SEINET10837197  Linanthus filipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4257 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET12318323  Linanthus filipes E. D. Osman 1978-1 20 Butte ca 7.8 mi N of Chico and 200 E of Cohasset Hwy 76 Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  CHSC43261  Lindernia dubia var. anagallidea Lowell Ahart 1987-9-4 5878 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CDA13285  Linnaea borealis var. longiflora G. F. Hrusa, T. D. Wilfred 1996-7-9 13133 Butte Plumas National Forest; along Jordan Ck, at top of waterfall above confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp 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
  UC1562290  Lipocarpha micrantha Lowell Ahart 1990-7-4 6547 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (along McCabe Creek); , McCabe Creek 243 Comment
  UC2026863  Liquidambar styraciflua Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UCSC000178  Lithocarpus densiflorus F. W. Foxworthy 1936-8-19 s.n. Butte forty miles east of Chico 1097 Comment
  CHSC24868  Lithophragma bolanderi T. L. Reynolds 1976-4-23 62 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC38674  Lithophragma bolanderi Vernon Oswald 1983-3-13 163 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Salmon Hole and Parking Area P (1.7 mi e of the power lines). 182 Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  POM181691  Lithophragma bolanderi Williams 1927-4-11 s.n. Butte Near Chico Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  SEINET12216581  Lithophragma parviflorum P. D. Nelson 1979-1 s.n. Butte Table Mountain, ca 200 ft W of Cherokee-Mountain Rd, ca 6 mi N of Oroville 381 Comment
  CAS-BOT-BC428451  Lithophragma trifoliatum Lowell Ahart 1980-3-26 2051 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC23637  Lithospermum californicum M. S. Taylor 1976-4-4 1055 Butte On n side of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 609 Comment
  JEPS108980  Lithospermum californicum Lowell Ahart 2006-6-9 12641 Butte In the center of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  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
  JEPS115281  Lolium multiflorum Lowell Ahart 2009-5-8 15669 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC8241  Lolium temulentum J. G. Moore 1969-5-7 38 Butte Cohasset Rd., 3 mi. e of Rock Creek Rd. on s side of road. 106 Comment
  CHSC42598  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-3-4 1683 Butte Chico Municipal Airport near the e end of Piper Ave. 80 Comment
  UC875115  Lomatium caruifolium var. denticulatum A. A. Heller 1915-3-6 11769 Butte 8 mi. n. Oroville Comment
  UC566835  Lomatium dasycarpum subsp. tomentosum Herbert L. Mason 1927-5-10 3721 Butte n.e. Oroville (n. side of Table Mt., Coal Creek); Table Mt., Coal Creek Comment
  CHSC46327  Lomatium marginatum Lowell Ahart 1989-5-26 6273 Butte Just below the high water line 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. 51 Comment
  CHSC116692  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 Comment
  CHSC32635  Lomatium utriculatum M. S. Taylor; L. Hanson 1981-4-2 3477 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  CHSC34609  Lomatium utriculatum Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway. Grassy flat ca. 25m n of road. 243 Comment
  SEINET10454535  Lomatium utriculatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3477 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  CHSC113655  Lonicera hispidula L. P. Janeway 2014-5-29 11276 Butte Northern High Sierra Nevdda. 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
  SEINET8056664  Lonicera hispidula M. J. Williams 1984-5-25 84- 34 -1 Butte Feather River Canyon, Hwy 70, 1.5 mile W of Poe Power Dam. 457 Comment
  UCD80204  Lonicera interrupta CNPS SN Foothill Team 2005-5-5 SNFN 0158 b Butte City of Chico, Upper Bidwell Park, Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 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
  UC139418  Lonicera involucrata var. involucrata Mrs. R. M. Austin July 1896 679 Butte Colby Comment
  CHSC65167  Lotus corniculatus Lowell Ahart 1995-8-19 7612 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
  JEPS97342  Lotus corniculatus Lowell Ahart 1995-8-19 7612 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10841146  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-5 Taylor 3617 Butte T20N R6E ne/ne sec 11 Forbestown quad. Ca. 50 ft N of spur rd from 21N35Y, ca. 0.5 mi E of Feather Falls trailhead, ca. 1 air mi E of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  RSA754946  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC80909  Lotus micranthus R. M. Austin May 1896 702 Butte Little Chico Creek Comment
  SEINET10906967  Lotus micranthus Lowell Ahart 1983-5-13 Ahart 3991 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 Comment
  UC600394  Lotus purshianus var. purshianus H. F. Copeland 1932-7-24 Butte by small stream running down from the w to Butte Creek meadows Jonesville, Butte Creek Meadows Comment
  UC726319  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  CDA7108  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. Comment
  SEINET194894  Lupinus acutilobus A. A. Heller 1938-4-23 15050 Butte Between the Las Plumas road and the summit on Highway 24, 20 miles east of Oroville. 762 Comment
  SBBG29098  Lupinus albicaulis E. B. Copeland 1929-7-17 Butte above Jonesville 609 Comment
  SEINET10452614  Lupinus albicaulis Lowell Ahart 1985-5-10 Ahart 4949 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UC392199  Lupinus arbustus E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  CHSC90507  Lupinus bicolor Cathy Young 1988-4-20 5 Butte In Chico, ca. 120 yds w of Highway 99 on s bank of Lindo Channel. 60 Comment
  UC204553  Lupinus bicolor A. A. Heller 1914-3-13 11198 Butte near the western base Table Mountain (hills eight mi n of Oroville); near western base of Table Mountain Comment
  CHSC3186  Lupinus bicolor var. tridentatus Dona Kingsford 1966-3-30 Butte Table Mountain, NE of Chico. Comment
  CHSC39973  Lupinus bicolor var. tridentatus L. Ahart; P. Ahart 1983-6-26 4123 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  CHSC34687  Lupinus nanus M. S. Taylor 1981-4-14 3528 Butte NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  UC1129656  Lupinus nanus J. E. Sowder 1933-5-26 77 Butte 1/4 mi nw Yankee Hill; Chico Quad., nw of Yankee Hill Comment
  UCD109258  Lupinus nanus Michael A. Vincent; Ethan H. Freid 1998-4-6 8117 Butte Table Mountain. 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
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  POM276432  Lupinus sellulus subsp. sellulus Lyman D. Benson 1932-7-28 3976 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  POM219418  Lupinus sellulus var. artulus E. B. Copeland 1931-7-3 651 Butte Jonesville, Colby Canyon. 1600 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  CDA14180  Luzula comosa G. F. Hrusa 1997-4-3 13696 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  POM196138  Luzula comosa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  JEPS121922  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC51222  Lycopus americanus Lowell Ahart 1984-8-19 4783 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 30 Comment
  CHSC75966  Lycopus americanus Lowell Ahart; Vernon H. Oswald 1999-8-13 8165 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
  RSA725036  Lycopus americanus L. Ahart 2006-9-13 13320 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
  JEPS45973  Lythrum hyssopifolia H. A. Dutton 1921-1 Butte Chico at the Hooker Oak Chico; , Hooker Oak Comment
  UC1609425  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  CHSC47442  Lythrum salicaria Lowell Ahart 1984-8-19 4782 Butte North of the state borrow area, west of Pacific Heights Road, about 5miles south-west of Oroville. 30 Comment
  CHSC78256  Lythrum salicaria Lowell Ahart 2000-7-2 8551 Butte Wet area on the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. 73 Comment
  RSA0016015  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  CHSC58254  Madia elegans subsp. vernalis Lowell Ahart 1992-5-9 6759 Butte North of the road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CAS-BOT-BC344319  Madia exigua Lowell Ahart 1988-6-23 6068 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  SEINET10871971  Madia exigua Lowell Ahart 1985-5-15 Ahart 4986 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CAS-BOT-BC342964  Madia gracilis Lowell Ahart 1981-8-15 3037 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CDA13275  Madia gracilis G. F. Hrusa, T. D. Wilfred 1996-7-9 13123 Butte Plumas National Forest; Above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC34056  Madia gracilis L. Ahart; M. S. Taylor 1981-8-15 3037 Butte Near the dirt road on n side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC36516  Madia gracilis L. Ahart 1982-5-28 3438 Butte Near North Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n of 3 mi e of Honcut. 50 Comment
  CHSC40301  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  JEPS121915  Maianthemum stellatum Lowell Ahart 2014-7-10 19620 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CDA8300  Malacothrix floccifera L. Ahart 2004-6-22 11113 Butte On the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  CHSC32380  Malacothrix floccifera J. D. Jokerst; R. A. Schlising 1980-7-2 927 Butte Junction of Garland Rd and Ponderosa Way, 2.4 mi SE of Hwy 32, ca 4 airline mi NNE of Forest Ranch. Comment
  CHSC40483  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  SEINET10479979  Malva parviflora Mary Susan Taylor 1982-4-28 Taylor 4374 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS88407  Malvella leprosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8094 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. (n.e. c); Sacamento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CHSC101263  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  UCR208956  Meconella denticulata H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  CHSC82431  Medicago polymorpha Lowell Ahart 2002-5-7 9622 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
  RSA32916  Medicago polymorpha A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  CDA43101  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills.; Upper Bidwell Park, Chico; along the well-developed steep un-official trail +/- under the upper powerlines, connecting Upper Trail to North Rim Trail. Comment
  CHSC39594  Medicago praecox Lowell Ahart 1983-4-10 3924 Butte On a steep sidehill, about 1 1/2 miles northeast of Highway 99 and Pentz Road. 100 Comment
  SEINET12155149  Medicago sativa P. L. Ricker 1912-1 3920 Butte Chico Comment
  CHSC3335  Melaleuca leucadendra Robert L. Smith 1966-3-3 25 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CAS-BOT-BC271133  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CAS-BOT-BC269383  Melica californica John Thomas Howell 1955-6-14 30458 Butte Magalia 731 Comment
  CAS-BOT-BC269388  Melica californica L. W. Swift 1934-5-7 102 Butte Outside forest 731 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
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. 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. 599 Comment
  RSA500431  Melica geyeri Vernon H. Oswald 1989-5-28 3787 Butte Logging road paralleling the west side of Butte Creek, 3.1 miles south of Humboldt Road (near Butte Meadows). 1293 Comment
  CHSC107923  Melica harfordii L. P. Janeway 2011-7-21 10519 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cut-banks. 1067 Comment
  CAS-BOT-BC262457  Melica subulata E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  JEPS106264  Melica subulata Lowell Ahart 2004-7-23 11300 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  CHSC44579  Melica torreyana Lowell Ahart 1979-5-29 1891 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 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
  CHSC33678  Melilotus indicus L. Ahart 1981-5-16 2797 Butte Along the edge of dirt rd on Gray-Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1563287  Mentha canadensis unknown 1990-10-3 6622 Butte about 1/4 mi ne Canyon Creek Bridge (across Lake Oroville, East Fork Canyon Creek, below high water line Lake Oroville); East Fork Canyon Creek, Lake Oroville 259 Comment
  CHSC94031  Mentha pulegium R. D. Fischer 2005-7-18 736 Butte Sierra Nevada foothills, off Hwy. 32, on 10 Mile House Road in Bidwell Park about 4 miles east of Chico. Plants growing in moist meadow at edge of Big Chico Creek riparian near upper end of park property. 213 Comment
  CHSC38476  Mentha spicata Vernon Oswald 1983-7-22 894 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. 85 Comment
  CHSC108311  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC47993  Mertensia ciliata Vernon Oswald 1984-7-31 1641 Butte Humboldt Rd. at the Willow Creek--Colby Creek bridge. Near the creek. 1487 Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC111384  Micranthes californica Lowell Ahart 2012-3-23 17785 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC39241  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CAS-BOT-BC429074  Micranthes odontoloma E. B. Copeland 1931-7-20 s.n. Butte Vicinity of Jonesville, Lassen National Forest. 1500 Comment
  CAS-BOT-BC429198  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  CAS-BOT-BC348467  Micropus californicus var. californicus A. A. Heller; H. E. Brown 1903-5-6 5460 Butte Berry Canyon (Near Clear Creek) Comment
  UCD73066  Microseris acuminata 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
  CAS-BOT-BC348702  Microseris acuminata John Thomas Howell 1976-4-2 51546 Butte About 2 miles southeast of Chico 60 Comment
  CHSC46335  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Along the edges of a dirt road, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico Comment
  RSA715721  Microsteris gracilis subsp. gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC96952  Mimetanthe pilosa Lowell Ahart 2007-7-8 14270 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  SEINET10830535  Mimulus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5242 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  HSC32623  Mimulus angustatus Dave Knorr 1974-4-20 125 Butte On Cherokee Mtn., road about 1 mi. E of Cherokee Comment
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  SEINET10570231  Mimulus glaucescens Mary Susan Taylor 1986-5-6 Taylor 5616 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  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
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  UCD96094  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-5-3 813 Butte About 2.25 miles from Bardees Bar Road junction on forest service road 22N37. 328 Comment
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  CHSC14069  Mimulus moschatus K. R. Stern 1974-6-30 5771 Butte 11.5 mi ne of Stirling City, on Bald Mt. road. Comment
  CHSC44718  Mimulus moschatus R. Banchero 1980-6-26 267 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC44774  Mimulus moschatus R. Banchero 1980-7-2 277 Butte Along Powelton Rd 4.5 mi NE of its jct with the Skyway (near old Powelton site). 1097 Comment
  UCD122653  Mimulus nasutus J. Doty 1969-3-31 618 Butte on east side of Cohasset Road, ca. 8 miles north of Chico. Comment
  RSA0116102  Mimulus primuloides var. pilosellus Lowell A. Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 miles (air) west of Philbrook Resrvoir. 1665 Comment
  JEPS10512  Mimulus tricolor W. L. Jepson 1934-5-4 16612 Butte 1 1/2 mi s Nord; Sacramento River, Pine Creek Comment
  UCD122958  Mimulus tricolor R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  JEPS110187  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
  UCD73014  Minuartia californica 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
  UCSC008596  Minuartia californica Randall Morgan 2008-4-1 4840 Butte Originally from Ahart Ranch Comment
  POM219016  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  CHSC62559  Monardella breweri subsp. lanceolata L. P. Janeway 1993-6-15 4388 Butte Plumas National Forest. Southwest side of Ponderosa Dam on South Fork Feather River. Bank opposite the Diversion Building, ca 50 ft south of the dam. 298 Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CHSC112680  Monardella sheltonii Lowell Ahart 2013-7-1 18819 Butte Edge of a dry meadow, about 30 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  JEPS126594  Monardella sheltonii Lowell Ahart 2016-6-29 21051 -A Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  UC726300  Monardella villosa subsp. villosa A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CAS-BOT-BC444610  Montia chamissoi Mrs. Marian L. Campbell 1916-7-4 s.n. Butte Nelsons Comment
  HSC32652  Montia fontana David Johnson 1974-4-20 57 Butte Table Mtn. Comment
  JEPS106292  Montia fontana Lowell Ahart 2004-3-1 10700 Butte near low rocks, large rocks to the south, about 1 mi NE of Honcut Cemetary, about 4 air mi NE of Honcut, about 12 air mi SE of Oroville 62 Comment
  UC203629  Montia fontana A. A. Heller 1914-3-18 11209 Butte 8 mi n of Oroville Comment
  JEPS119846  Montia fontana subsp. amporitana Lowell Ahart 2012-3-23 17792 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC27071  Montia fontana subsp. chondrosperma James T. Nicol 1978-3-15 12 Butte Ca. 30 m se of junct. of Honey Run-Humbug Rds. 10.2 km ese of Chico. 120 Comment
  CHSC12406  Montia parvifolia Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  CHSC23717  Montia parvifolia M. S. Taylor 1976-5-5 1114 Butte Abundant along creek, ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  CHSC45101  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  JEPS118632  Morus alba L. P. Janeway 2011-5-9 10252 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC46607  Muhlenbergia andina V. Oswald; L. Ahart 1989-7-21 3885 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  JEPS121964  Muhlenbergia minutissima Lowell Ahart 2014-7-7 19580 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  RSA4650  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. 1750 Comment
  CHSC20052  Myosurus apetalus var. borealis M. S. Taylor 1975-4-18 483 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99, ca. 5 mi n of Chico. Comment
  CHSC20528  Myrtus communis Pamela Caldwell 1971-11-7 Butte CSUC campus. So-wil-len-no Rd. Behind amphitheatre. Comment
  CHSC55063  Najas graminea Lowell Ahart 1991-9-14 6723 Butte A large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC11971  Nama lobbii E. B. Copeland 1930-6-27 Butte Jonesville. 1600 Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  RSA755440  Nasturtium officinale L. Ahart 2009-5-23 15728 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC100805  Navarretia capillaris R. A. Schlising; L. Janeway 1988-7-16 4604 Butte N part of county, S of Humbug Summit at upper reaches of Willow Creek; edge of meadow. 1950 Comment
  CHSC45756  Navarretia divaricata subsp. divaricata L. P. Janeway 1988-6-14 2779 Butte Near W Br Butte Creek at crossing of road 1.9 mi W from hwy 32 towards Ewalt Camp. Near a mdw. 922 Comment
  JEPS117330  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-21 17209 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
  CDA34758  Navarretia filicaulis L. Ahart 2009-6-3 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CDA40077  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  CHSC44414  Navarretia filicaulis Lowell Ahart 1988-7-3 6119 Butte At the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  JEPS120030  Navarretia filicaulis Lowell Ahart 2012-6-9 18180 Butte On the north side of Guardian Trail, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  CHSC39340  Navarretia intertexta Lowell Ahart 1983-6-26 4140 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET10902896  Navarretia intertexta Mary Susan Taylor 1980-5-31 Taylor 2757 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CDA40269  Navarretia intertexta subsp. intertexta L. Ahart 2005-6-6 11997 Butte On the west 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. Comment
  CHSC113518  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC25158  Navarretia leptalea D. Joley 1968-7-8 Butte 3/4 mi e of Lomo on Butte Meadows Road ca. 35 mi ne of Chico. Comment
  UC426937  Navarretia leptalea subsp. leptalea E. B. Copeland 1930-6-28 444 Butte Scotch John meadow , Scotch John Meadow (Jonesville) 1650 Comment
  CHSC36432  Navarretia leucocephala D. H. Ikeda 1980-5-10 355 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  CHSC66081  Navarretia leucocephala subsp. leucocephala Vernon H. Oswald 1996-5-23 7634 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 bed of a vernal pool in Tract 5, Sanctuary I. 32 Comment
  POM74520A  Navarretia leucocephala subsp. leucocephala C. C. Bruce 1898-05 1970 Butte Sloughs Comment
  CAS-BOT-BC230477  Navarretia nigelliformis var. nigelliformis Beecher Crampton 1966-6-27 7768 Butte Ca. 13 miles NW central Chico (in direct line), Roney Ranch Comment
  UC1124127  Navarretia pubescens C. G. Albertus 1933-6-6 26 Butte 1.5 mi w Pentz; Chico Quad. 137 Comment
  CHSC96231  Navarretia subuligera R. Fischer 2006-5-21 997 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants were growing adjacent a seasonal spring on the east side of the Overlook Road. 518 Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  SD7652  Navarretia viscidula Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  CHSC46820  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  CHSC46822  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-5 3826 Butte N part of county, ca. 0.2 mi s of junction of Humboldt Road, along Hwy 32 at Lomo. Comment
  JEPS3147  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big and Little Chico Creeks, Sierra Nevada foothills); Sierra Nevada foothills, btw Big and Little Chico Creeks 609 Comment
  CHSC31111  Nemophila maculata Leslie Steidl 1980-4-10 16 Butte Ca. 18.5 mi ene of Oroville, ca. 3.25 mi e of Lumpkin Rd., ca. .5 mi w of Lake Oroville, ca. 1.25 mi n of old railroad grade, ca. 6 yd se of dirt road. 353 Comment
  CHSC698  Nemophila menziesii E. Canfield 1904-4-1 Butte Richardson Springs road. 83 Comment
  CHSC114960  Nemophila pedunculata Lowell Ahart 2015-3-14 19949 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  CHSC51048  Nemophila pedunculata Pauleen Broyles 1987-3-24 999 Butte The Nature Conservancy Vina Plains Preserve Wurlitzer Addition. Comment
  CHSC50329  Nemophila spatulata Vernon Oswald 1990-6-4 4284 Butte Logging road just south of Humbug Summit and Cold Springs, ca. 0.25 mile northwest of Humbug Rd, on a branch of Willow Creek. 1950 Comment
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile wewst of the Ponderosa Dam. 289 Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  UCD14585  Notholithocarpus densiflorus Robert Willoghby 1985-12-17 s.n. Butte California, Butte Co.; Forbestown, ca. 2-3 miles northwest of Challenge Station (by air), on the Kenneth Haddick property (ca. 150 acres with old homestead, some pasture and cows, but largely Pinus ponderosa and Pseudotsuga menziesii timberland), Comment
  CHSC90657  Nuttallanthus canadensis Samatha Mackey Hillaire; Charles Hooks 2005-4-9 1213 Butte North Table Mountain Plateau. Shore of AL Chaffin Reservoir, SE side. 298 Comment
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Jan 18 2011
  CHSC62624  Oemleria cerasiformis Vernon H. Oswald; Lowell Ahart 1994-5-27 5959 Butte 0.66 miles W of Cherokee Rd. Jeep trail in Beaston Hollow on N. Table Mtn., W side of Cherokee Rd., N of Oroville. In the bottom of the hollow. 304 Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC77488  Olea europaea Tim Stofer 1997-4-22 21 Butte The plant was located on the east side of the trail at the shooting range, 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC39922  Onobrychis viciifolia M. S. Taylor 1982-6-24 4734 Butte At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt. ca 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  CAS-BOT-BC349984  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  JEPS119679  Orobanche uniflora Lowell Ahart 2012-5-4 17987 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10549650  Orthocarpus attenuatus Mary Susan Taylor 1974-4-20 Taylor 184 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  SEINET12326960  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 2.5 mi NE of jct Lassen Ave & Cohasset Rd, near Chico, 500 ft N of roadway 152 Comment
  SEINET12326963  Orthocarpus attenuatus R. E. Preston 1979-1 18 Butte N of Cherokee Rd, 5 mi N of Oroville 366 Comment
  CHSC50311  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail, ca. 0.4 mile north of the trailhead, ca. 2 miles north of the town of Feather Falls. 701 Comment
  CHSC42636  Osmorhiza chilensis Vernon Oswald 1984-6-11 1272 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC20095  Oxalis pes-caprae M. S. Taylor 1975-4-6 432 Butte Along fence on ne corner of Arcadian St. and 4th Avenue, Chico. 60 Comment
  CHSC63801  Oxypolis occidentalis S. C. Morey 1983-8-3 696 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct eith Humboldt Rd. at Butte Meadows. 393 Comment
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Oct 5 2007
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC334336  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  LA212209  Packera eurycephala var. lewisrosei James R. Shevock; 1972-5-9 1777 Butte Feather River Canyon, Jarbo Plass. 914 Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  CAS-BOT-BC317161  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  UC854374  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville Sierra Nevada 1676 Comment
  CHSC38838  Panicum acuminatum var. acuminatum Vernon Oswald 1983-5-31 587 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 200 ft e of Day Camp. 91 Comment
  CHSC61374  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC71269  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte South margins of a stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS124345  Panicum capillare Lowell Ahart 2015-10-26 20605 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD89528  Panicum capillare E. M. Johnston 1915-1 W- 143 J Butte Biggs. Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  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
  UC764866  Parvisedum pumilum R. F. Hoover 1938-4-24 3249 Butte 2 mi n of Chico Comment
  JEPS127627  Paspalum distichum B. Castro 2008-9-11 1774 Butte 10 air miles W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokee Canal 0,2 mi NE of Sward bend in canal. Ca 40 feet out from levee toe. Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  UCD88969  Paspalum urvillei Alan A. Beetle 1941-6-27 2894 Butte 4 miles north of Gilroy. Comment
  CHSC33892  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC34221  Paxistima myrsinites M. S. Taylor 1981-5-29 3811 Butte Vicinity of old mining claim ca bin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC11908  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CDA38827  Pectocarya pusilla L. Ahart 2012-4-3 17936 Butte On the east side of Guardian Trial, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC3535  Pedicularis densiflora John Francis 1966-4-6 83 Butte 0.3 mi from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  CHSC36898  Pellaea brachyptera L. Ahart 1982-6-4 3539 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC67552  Pellaea mucronata Lowell Ahart 1979-4-6 s.n. Butte 3 mi. nw of Bangor, along the west side of North Honcut Creek. 100 Comment
  CAS-BOT-BC67558  Pellaea mucronata M. S. Taylor 1979-3-20 1954 Butte Ca. 1 mi. N of jct. of north fork Feather River and Hwy 70 along an old road, ca. 10 mi. N of Oroville. 304 Comment
  CHSC27944  Pellaea mucronata M. S. Taylor 1979-3-20 1954 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70. Ca. 10 mi n of Oroville. 304 Comment
  CHSC86077  Pellaea mucronata var. mucronata R. D. Fischer; Paul Maslin 2003-12-24 20 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located on the west side edge of the hwy, about 100 yds south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). Located near the bottom of the cut bank behind the 'rock barrier' fence. 591 Comment
  SEINET10547978  Penstemon deustus Mary Susan Taylor 1978-7-18 Taylor 1710 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  POM14699  Penstemon heterophyllus subsp. purdyi A. A. Heller, H. E. Brown 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  CHSC51929  Penstemon heterophyllus var. purdyi Cathy Young 1988-4-24 13 Butte Ca. 5.5 mi NE of Chico, 50 yds SE of Hwy 32. 256 Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 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
  CHSC44703  Penstemon laetus var. leptosepalus R. Banchero 1980-6-2 177 Butte Along Hwy 32, ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of the jct of Hwy 32 and Forest Ranch Rd. 609 Comment
  CHSC62138  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-23 4398 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  JEPS118483  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
  POM219250  Penstemon neotericus H. F. Copeland 1930-7-26 1378 Butte Jonesville. 1677 Comment
  RSA4118  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  RSA325947  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca 16 km N of Forest Ranch, along E margin of Hwy 32, ca 15 mi S of jct of Hwy 32 and Butte Meadows Rd. 1170 Comment
  CHSC30080  Penstemon newberryi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3217 Butte Humboldt Peak on the top and w side along the trail. 2154 Comment
  CAS-BOT-BC245633  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1706 Comment
  CAS-BOT-BC245638  Penstemon personatus Robert Banchero 1981-7-19 609 Butte 1 mile NE of Bald Mt. lookout on Bald Mt. 1780 Comment
  RSA0049655  Penstemon personatus Dean Wm. Taylor, Bryan Waylan 2011-8-3 21139 Butte logging road ca. 1 air mile North of Bald Mountain lookout (watershed Middle Fork Feather River) 1590 Comment
  CHSC39892  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. 100 Comment
  CHSC57333  Pentagramma triangularis Robert C. Hill 1990-4-10 9 Butte Large population at intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CHSC28417  Pentagramma triangularis subsp. semipallida Bruce Hamren 1978-4-24 8 Butte West Branch of Feather River. 280 Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte At end of Dark Canyon Rd, around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  UC1532345  Perideridia bacigalupii Vernon Oswald 1986-7-10 2186 Butte 1.8 mi. s. Forbestown Rd. (Robinson Mill Rd.) 640 Comment
  CHSC40224  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1848 Butte Scotts John Rd., 0.6 mi n of 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  UC1390028  Perideridia bolanderi subsp. involucrata T. I. Chuang and L. Constance 1967-6-21 6058 Butte 1.9 mi se Highway 70 (on road from Cherokee to Oregon City) Comment
  JEPS107522  Perideridia lemmonii Lowell Ahart 2005-7-12 12143 Butte About 40 yards south of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 40 yards east of Forest Road 21N40, about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  POM161669  Perideridia parishii subsp. latifolia E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CHSC45466  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte On the sides of a deep wash, about 1/4 mile south-east of Stirling City. 1097 Comment
  CAS-BOT-BC418948  Persicaria lapathifolia Ira L. Wiggins 1928-9-9 3332 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CDA42928  Persicaria maculosa L. Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC523829  Persicaria pensylvanica Lowell Ahart 1986-11-14 5457 Butte 0.1 mi south of the clay burrow for Oroville Dam, 0.25 mi E of Larkin Rd, about 6 mi SW of Oroville 36 Comment
  CHSC3836  Petrorhagia dubia L. E. Dunkel 1965-4-15 19 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge and ca. 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  RSA41905  Petrorhagia dubia Ella Dales Cantelow 1940-5-10 3078 Butte 10 miles E of Oroville, Bidwell Bar Bridge. Comment
  RSA421517  Phacelia bicolor Unspecified 1897-1 s.n. Butte Sandy valley, open flats. Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  CHSC46720  Phacelia imbricata R. A. Schlising 1982-7-28 4356 Butte Plumas National Forest, SE of Pulga and S of Coyote Gap Station. 838 Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  UC909974  Phacelia mutabilis A. A. Heller 1914-7-23 11600 Butte edge of forest about Chico Meadows 1219 Comment
  CHSC48475  Phacelia racemosa Vernon Oswald; Lowell Ahart 1987-6-10 2981 Butte Forest Service road joining Humbug Rd., in the first drainage e of Humbug Rd. 1874 Comment
  CHSC110226  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CAS-BOT-BC259047  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson 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-BC250705  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC58291  Phalaris paradoxa Lowell Ahart 1992-5-23 6776 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC20606  Philadelphus lewisii Robert A. Schlising 1964-6-11 2719 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  UC600759  Phleum pratense H. F. Copeland 1932-7-22 Butte Jonesville Comment
  SEINET12230317  Phoradendron bolleanum M. S. Taylor 1975-1 918 Butte 1/2 mi N of Magalia, 50 ft. E of the Skyway 610 Comment
  CAS-BOT-BC135096  Phoradendron juniperinum Joseph P. Tracy 1932-7-16 10648 Butte Trinity Summit, open places at Corral Prairie 1584 Comment
  RSA4394  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  JEPS115723  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC21051  Phoradendron villosum M. S. Taylor 1975-5-9 566 Butte Ca. 1/2 mi n of De Sabla turnoff, ca. 50 ft. e of the Skyway, Magalia. 731 Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  CHSC110945  Photinia serratifolia L. P. Janeway 2013-3-25 11087 Butte Sacramento Valley. South side of Feather River through Oroville, about 110 m northwest of Veterans Hall; north-slope of the levee between the bike trail and the water. 46 Comment
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 Comment
  JEPS127067  Physalis lancifolia Lowell Ahart 2016-5-30 20891 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  CHSC5976  Pinus mugo var. mughus M. MacArthur 1968-6-12 143 Butte SW wall of PSA bld., Chico State College campus. 60 Comment
  SEINET10530783  Pinus ponderosa Mary Susan Taylor 1980-5-27 Taylor 2702 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
  CHSC20119  Pinus sabiniana M. S. Taylor 1975-4-26 527 Butte On n and e side of Kunkle Reservoir, ca. 500 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  CHSC2352  Piperia elongata R. M. Staley 1952-7-2 Butte Paradise. 518 Comment
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  CHSC110980  Pistacia atlantica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10905291  Pityrogramma triangularis var. semipallida Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4105 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC31258  Plagiobothrys bracteatus R. A. Schlising 1980-6-1 3610 Butte S of Paradise, at Kunkle Reservoir, off Pentz Hwy. 440 Comment
  JEPS117196  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SEINET7072731  Plagiobothrys fulvus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  UCD73005  Plagiobothrys fulvus var. campestris 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
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  POM71620  Plagiobothrys glyptocarpus var. glyptocarpus C. C. Bruce 1898-05 1928 Butte [No locality information provided] Comment
  JEPS105995  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  UC196310  Plagiobothrys greenei A. A. Heller 1914-4-6 11266 Butte 8 mi n Oroville Comment
  UC987699  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte about 3 mi s of Cherokee on road to Oroville 335 Comment
  UCD120878  Plagiobothrys greenei W. R. Powell 1968-4-23 1467 Butte 2 miles south-southeast of Oroville. 71 Comment
  UC480700  Plagiobothrys nothofulvus H. F. Copeland 1923-2-25 600 Butte cliff above Butte Creek Comment
  CHSC109114  Plagiobothrys scriptus Lowell Ahart 2012-3-23 17798 Butte Botttom of a small path, 90 feet north of a large Gray Pine, north end of the Disc Golf Area, about 50 yads west of Highway 32, about 5 miles (air0 northeast of Chico. 395 Comment
  UC1537691  Plagiobothrys stipitatus Gordon H. True Jr. 1936-3-26 377 Butte Gray Lodge Refuge 22 Comment
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  JEPS119686  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. Comment
  JEPS115845  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 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
  RSA32724  Plagiobothrys tenellus A. A. Heller 1916-4-13 12318 Butte Stilson Canyon east of Chico Comment
  SEINET10497556  Plagiobothrys tenellus Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4290 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  RSA638254  Plantago Michael A. Vincent, E. Freid 1998-4-6 8120 Butte Table Mountain Comment
  CHSC28765  Plantago bigelovii J. D. Jokerst 1979-3-30 194 Butte Ca 300 meters S.E. of Hwy. 32, east of Chico. 396 Comment
  SEINET10499843  Plantago bigelovii Mary Susan Taylor 1976-3-23 Taylor 1031 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CDA6600  Plantago coronopus L. Ahart 1998-7-1 8030 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC71260  Plantago coronopus Lowell Ahart 1998-7-1 8030 Butte West of a small wash, 20 yards south of a east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC94050  Plantago coronopus R. D. Fischer 2005-5-18 724 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the ridge top at the south end of Humboldt Trail on the old roadbed. 426 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC28636  Plantago erecta M. S. Taylor 1979-3-31 1974 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC90827  Plantago erecta Lowell Ahart 2005-5-2 11773 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
  JEPS104023  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  CHSC116959  Plantago lanceolata Matthew Forster 2013-5-14 Butte Oroville spillway, off Oro Powerhouse Rd. 118 Comment
  CHSC31779  Plantago lanceolata L. Ahart 1973-6-28 256 Butte Peter Ahart Ranch, Honcut. On dry sand near a creek. 45 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  JEPS118034  Plantago virginica Lowell Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 58 Comment
  CHSC59030  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 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
  CAS-BOT-BC93157  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  JEPS115640  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  SEINET12030016  Platanus racemosa M. S. Taylor, Oswald, V. 1984-1 5376 Butte along Humbug Rd, ca 0.5 mi E of Honey Run Covered Bridge, ca 6 air mi E of Chico 183 Comment
  CHSC115485  Plectritis congesta subsp. brachystemon L. P. Janeway; Emily Meigs Doe 2015-4-21 11666 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  CDA13288  Pleuricospora fimbriolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13136 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC73945  Pleuricospora fimbriolata B. Castro; L. Gehrung 1998-6-23 795 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, on W side of Oro-Quincy Hwy, on E side of SW-trending ridge overlooking Get-Up-and-Get Creek. 1191 Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
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  CHSC28553  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC41433  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  CHSC61546  Poa howellii Lowell Ahart 1993-6-26 7030 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA718081  Poa pratensis L. Ahart 2006-7-16 12973 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  UC600761  Poa pratensis subsp. pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  CAS-BOT-BC236370  Poa secunda subsp. secunda Lowell Ahart 1979-5-7 s.n. Butte 2.5 miles SE of Paradise 472 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC60706  Poa secunda subsp. secunda Vernon H. Oswald 1993-4-12 5259 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Along an old track running from the bottom of the canyon up onto the top of Table Mtn. 341 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 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
  SEINET12318337  Pogogyne zizyphoroides E. D. Osman 1978-1 18 Butte Ca 7.8mi N of Chico and 200' E of Cohasset Hwy. Richardson Springs Quadrangle, 7.5'. NE corner of * 76 Comment
  UC187622  Pogogyne zizyphoroides Mrs. R. M. Austin May 1883 270 Butte Adobe Flats Comment
  RSA722691  Polanisia dodecandra subsp. trachysperma R. R. Halse 2006-8-2 6980 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC42738  Polycarpon tetraphyllum Lowell Ahart 1987-4-30 5485 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
  CHSC35755  Polygala cornuta R. E. Preston 1982-6-6 296 Butte Ridgetop, 1 mi e of Magalia. 762 Comment
  NY406770  Polygala cornuta A. A. Heller 1914-7-24 11624 Butte Forest Ranch 731.5 Comment
  SEINET10493883  Polygala cornuta Mary Susan Taylor 1978-7-21 Taylor 1798 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 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
  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
  UC726743  Polygala cornuta var. cornuta A. A. Heller 1941-6-22 16180 Butte Cohasset Comment
  SEINET6647278 Image available Polygonum alpinum H. F. Copeland 1928-1 440 Butte neighborhood of Jonesville; Canyon of Jones Creek 1829 Comment
  CAS-BOT-BC413923  Polygonum aviculare subsp. aviculare John Thomas Howell 1962-6-16 37564 Butte Magalia 731 Comment
  CAS-BOT-BC414190  Polygonum aviculare subsp. depressum John Thomas Howell 1961-9-22 36743 Butte Bank of Feather River, Oroville 53 Comment
  CDA22759  Polygonum bidwelliae Sterling O. Mattoon 1971-5-25 Butte Canyon overlook, Skyway, near Paradise. 0 Comment
  CHSC39126  Polygonum bidwelliae R. A. Schlising 1980-5-26 3603 a Butte S of the village of Cohasset. Comment
  CHSC45856  Polygonum bidwelliae Lowell Ahart 1979-5-7 1861 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC32757  Polygonum bolanderi J. D. Jokerst 1981-4-3 1282 Butte Butte Cr. Canyon, ca 1/2 mi E of Centerville at the top of the Penstock of PG and E power plant. 365 Comment
  RSA781349  Polygonum bolanderi Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 148 Butte Humboldt road. Comment
  UC177601  Polygonum bolanderi H. M. Hall 1914-7-20 9767 Butte Humboldt Road 975 Comment
  CHSC63714  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  CHSC71187  Polygonum californicum Lowell Ahart 1998-6-9 7982 Butte On dry dark rocky bare basalt, west of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCR66524  Polygonum douglasii H. F. Copeland 1928-8-18 0318 Butte Jonesville, Butte Creek Canyon 1529 Comment
  CHSC98663  Polygonum douglasii subsp. majus B. Castro; L. P. Janeway 2005-8-2 1509 Butte Ca. 1.5 mi E of Magalia, 0.5 mi E of Sawmill Peak, on NNW-facing slope of ridge ca 0.2 mi W of Ponderosa Way in upper end of NW-trending drainage. 932 Comment
  CDA14467  Polygonum persicaria G. D. Barbe 1988-8-24 4308 Butte Butte Basin; Lundberg Brothers' near Richvale. 0 Comment
  SEINET10470876  Polypodium californicum Lowell Ahart 1983-4-1 Ahart 3917 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC34240  Polypodium calirhiza M. S. Taylor 1981-5-7 3633 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC39614  Polypodium calirhiza Lowell Ahart 1983-3-28 3911 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC90205  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 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-BC233054  Polypogon interruptus Lowell Ahart 1982-5-28 3442 Butte E of Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CHSC34177  Polypogon interruptus L. Ahart 1981-9-15 3158 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  JEPS122199  Polypogon interruptus Lowell Ahart 2014-4-16 19369 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. Comment
  SEINET10507585  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4052 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
  CAS-BOT-BC232573  Polypogon monspeliensis Lowell Ahart 1987-5-27 5698 Butte On a sand bar along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC232578  Polypogon monspeliensis A. A. Heller 1902-5-15 5556 Butte Near Biggs Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC39312  Polystichum imbricans Lowell Ahart 1983-6-26 4122 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville-Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road not Ponderosa Way. 500 Comment
  CHSC4147  Polystichum imbricans R. Carter 1966-4-28 374 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. Up 23N28 on E side of road. 640 Comment
  CHSC63692  Polystichum imbricans Lowell Ahart 1994-10-9 7560 Butte On the north side of the poor road that goes from Milsap Bar to Mountain Spring House, about 1 mile west of Mountain Spring House and the paved road, about 8 1/2 (air) miles north and 1 1/2 miles east of Feather Falls. 1158 Comment
  JEPS116122  Polystichum imbricans subsp. curtum Lowell Ahart 2009-5-23 15741 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  CHSC82489  Polystichum imbricans subsp. imbricans Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9735 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10530130  Polystichum munitum Mary Susan Taylor 1976-3-6 Taylor 1013 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  SEINET9625612 Image available Polystichum munitum E. B. Copeland 1931-6-10 s.n. Butte Ridge west of Willow Creek. Vicinity of Jonesville, Lassen National Forest. 503 Comment
  SEINET10530133  Polystichum scopulinum Mary Susan Taylor 1980-8-2 Taylor 3214 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10965417  Populus fremontii Mary Susan Taylor 1974-10-11 Taylor 326 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC65474  Potamogeton filiformis Vernon Oswald 1987-5-25 2927 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  UC1099837  Potamogeton pectinatus Herbert L. Mason, Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  SEINET10483224  Potentilla gracilis subsp. nuttallii Mary Susan Taylor 1978-6-24 Taylor 1666 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CAS-BOT-BC539448  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CAS-BOT-BC158499  Potentilla millefolia Vesta Holt 1932-5-1 s.n. Butte Mountains near Chico Comment
  CHSC78267  Poteridium annuum Lowell Ahart 2000-6-29 8544 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS117525  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  RSA283335  Prunella vulgaris var. lanceolata Lyman Benson 1932-7-28 3966 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC37707  Prunus avium M. S. Taylor 1981-5-29 3813 Butte At old cabin site (persisting) on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chico Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC48866  Prunus avium Vernon Oswald 1987-5-6 2372 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi nw of Butte Creek Bridge. On the edge of a pond. 65 Comment
  SEINET10838463  Prunus avium Mary Susan Taylor 1980-4-27 Taylor 2558 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC159921  Prunus emarginata A. A. Heller 1928-6-28 14618 Butte On the ridge south Butte Creek, Butte Meadows Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  RSA4427  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville, on ridge West of North Willow Creek 1650 Comment
  CHSC30422  Pseudobahia heermannii J. D. Jokerst; L. Ahart, M. Taylor 1980-4-7 553 Butte NE corner of the jct of Swedes Flat Rd and Rocky Honcut Cr, (10 mi SE of Oroville). Comment
  CHSC90595  Pseudobahia heermannii J. D. Prouty 1980-4-7 80 .42 Butte Bank near bridge at junction of Upper Rocky Honcut Creek and Swedes Flat Road. 350 Comment
  CHSC104799  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC100525  Pseudognaphalium thermale Lowell Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC33644  Pseudognaphalium thermale M. Merryman; R. Banchero 1979-9-2 25 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. Roadside fill. 950 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC23532  Psilocarphus brevissimus var. brevissimus M. S. Taylor 1976-3-23 1035 Butte Ca. 1/4 mi n of Pine Creek on Pine Creek-Cana Rd, ca. 11 mi no of Chico. 60 Comment
  SEINET10475180  Psilocarphus oregonus Mary Susan Taylor 1979-5-6 Taylor 2003 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC87445  Psilocarphus tenellus var. tenellus R. D. Fischer 2004-4-3 79 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on Guardian Trail, south of Pine Trail junction. 399 Comment
  CHSC28127  Pteridium aquilinum var. pubescens R. E. Barry 1972-5-6 58 Butte Located ca 50 yds s of the KHSL transmitter on the w side of Cohasset Road, ca 15 mi n of Chico Municipal Airport. 1066 Comment
  CAS-BOT-BC6298  Pterospora andromedea Edwin Bingham Copeland 1931-7-15 668 Butte Jonesville Comment
  CHSC38648  Pyracantha fortuneana Vernon Oswald 1983-5-22 525 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  UC105955  Pyrola asarifolia Mrs. R. M. Austin Jul 1896 586 Butte Colby Comment
  UCR231087  Pyrola dentata Anna M. Hurlbutt 2009-8-7 019 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  RSA0083380  Pyrola picta H. F. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CAS-BOT-BC45811  Quercus H. F. Copeland 1920-8-26 177 Butte near Jonesville 1219 Comment
  SEINET10833519  Quercus Mary Susan Taylor 1980-5-15 Taylor 2641 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC109223  Quercus X morehus B. Castro 2003-9-10 1461 Butte Ca. 15 mi NE of Oroville, on the slopes over the West Branch Feather Riber across from the Lime Saddle area on NW-facing slope along lower end of Nelson Bar Road, just below State Recreation Area boundary overhanging edge of road. 323 Comment
  UCD170496  Quercus chrysolepis D. O. Burge 2017-3-18 2230 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  SEINET10477146  Quercus chrysolepis Mary Susan Taylor 1975-9-12 Taylor 907 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CAS-BOT-BC86632  Quercus douglasii A. A. Heller 1913-10-1 11145 Butte Hills near Big Chico creek, E of Chico 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
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CAS-BOT-BC62794  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  RSA325123  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  CHSC77341  Quercus lobata L. P. Janeway 2000-3-29 6648 Butte Sacramento Valley. At edge of River Road 0.5 mi south of Hwy 32; near Pine Creek. Along fenceline between road and orchard. 43 Comment
  CHSC6044  Quercus nigra M. MacArthur 1968-6-17 168 Butte Half way between LS bld. and Big Chico Creek, Chico State College. 60 Comment
  CHSC3338  Quercus suber Robert L. Smith 1966-3-1 36 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  UCD47411  Quercus vacciniifolia A. E. Wieslander; J. E. Sowder 1933-6-24 91 Butte 1/4 mile east of Inskepion Fish Creek. 1432 Comment
  UC176384  Quercus wislizeni A. A. Heller 1913-3-9 10689 Butte 2 mi n Oroville Comment
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  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
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  CAS-BOT-BC379413  Ranunculus alismifolius var. alismellus H. F. Copeland 1920-7-11 67 Butte Scotch John Meadows 1829 Comment
  CAS-BOT-BC379117  Ranunculus aquatilis var. diffusus Lowell Ahart 1981-8-15 3029 Butte 1.5 mi south of Snag Lake (about 3 mi south of Jonesville) 1500 Comment
  CDA24297  Ranunculus aquatilis var. subrigidus T. C. Fuller 1962-5-17 8719 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC29048  Ranunculus bonariensis var. trisepalus R. A. Schlising 1980-4-14 3565 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; in ditch at s end of area. Comment
  CHSC50056  Ranunculus hebecarpus Lowell Ahart 1990-3-19 6421 Butte At the base of banks along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  UC204953  Ranunculus hebecarpus A. A. Heller 1914-3-26 11232 Butte Canyon of Big Chico Creek 76 Comment
  CHSC3289  Ranunculus occidentalis M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin. building at n. end of Upper Bidwell Park. Chico. Comment
  CHSC13496  Ranunculus occidentalis var. occidentalis P. Fehr 1974-4-17 9 Butte Creek bed ca. 15 yards from w side of Cherokee Rd. .5 miles s of Cherokee. 391 Comment
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  UCD149968  Ranunculus uncinatus Harry A. George 1967-4-24 s.n. Butte Table Mtn. Comment
  UCR237330  Raphanus sativus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18744 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC74266  Raphanus sativus Lowell Ahart 1973-3-24 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC59876  Rhamnus ilicifolia John Thomas Howell 1962-6-15 374512 Butte Magalia. 731 Comment
  RSA31115  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  SEINET10969454  Rhamnus ilicifolia Mary Susan Taylor 1980-4-27 Taylor 2574 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
  UC600524  Rhamnus rubra H. F. Copeland 1931-6-10 Butte crest between Willow Creek and Colby Creek Comment
  CHSC42492  Rhamnus tomentella subsp. tomentella Lowell Ahart 1987-5-9 5586 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  JEPS115608  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  POM77200  Rhododendron occidentale var. californicum C. C. Bruce 1898-06 2472 Butte Forest Ranch. Comment
  CHSC89896  Rhynchospora californica L. P. Janeway 2004-12-11 8326 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope about 350 m north of Parking Lot F; west side of major ephemeral drainage about 240 m west of upper high voltage power lines. Seep about 50 m long, 25 m wide. 116 Comment
  CHSC78318  Rhynchospora capitellata Lowell Ahart 2000-6-27 8532 Butte Seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC69046  Ribes nevadense Lowell Ahart 1997-8-1 7760 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
  CHSC44353  Ribes roezlii Lowell Ahart 1988-3-28 5953 Butte On a steep basalt mountain side, about 1/10 miles south of Lumpkin Ridge road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
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Jan 9 2013
  RSA0024711  Ribes roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada. On Chico - Lake Almanor Road (Calif. Highway 32), approx. 5 miles North of Forest Ranch. 915 Comment
  SEINET12216578  Ribes roezlii M. R. Nichols 1975-1 14 Butte 6.8 mi NE of Chico on Cohasset Rd from Chico Airport 579 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC108764  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC103661  Rorippa palustris var. occidentalis Lowell Ahart 2010-4-7 16575 Butte On the sides of a deep ditch, south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Princeton Highway, about 1 1/4 mile northwest of Biggs. 31 Comment
  JEPS122200  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 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. Comment
  JEPS103255  Rosa eglanteria Lowell Ahart 2002-9-8 9933 Butte 1 3/4 mi N by road from town of Feather Falls (W side of paved road, 1/4 mi S of the first parking spaces at the Feather Falls Trailhead) 854 Comment
  JEPS115698  Rosa pisocarpa Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET8359729  Rosa pisocarpa Unknown 2007-6-23 19074 Butte Black Bart Road 1.2 miles from lower junction with Forbestown Road, ca 10 air miles east-southeast of Oroville. 655 Comment
  RSA0005392  Rosa pisocarpa subsp. ahartii Barbara Ertter 2007-6-23 19074 Butte Black Bart Road. 1.3 miles from lower junction with Forbestown Road ca. 10 air miles ESE of Oroville. 655 Comment
  SEINET4856098  Rosa pisocarpa subsp. ahartii Unknown 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 air miles ESE of Oroville. 655 Comment
  CAS-BOT-BC274227  Rostraria cristata Lowell Ahart 1982-4-29 3386 Butte Near the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  SEINET10791514  Rostraria cristata Lowell Ahart 1982-4-29 Ahart 3386 Butte Normal size. On dry soil along edge of rd, near check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 Comment
  CDA5117  Rotala indica L. Ahart 2000-10-15 8707 Butte Strand of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CDA31997  Rubus armeniacus L. Ahart 2008-5-23 15771 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  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
  CHSC35220  Rubus glaucifolius M. S. Taylor 1981-5-5 3610 Butte W side of spur rd, ca. 1.5 air mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 air mi n of Feather Falls. 792 Comment
  CHSC95081  Rubus glaucifolius L. P. Janeway 2006-6-25 8705 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  SBBG3096  Rubus laciniatus H. and M. Dearing 1938-6-21 2048 Butte 20 mi NE of Chico, near Shuffleston Station Comment
  SEINET10483574  Rubus laciniatus Mary Susan Taylor 1980-2-17 Taylor 2362 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  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
  CHSC1600  Rubus parviflorus 1941-7-12 Butte Kimshew Falls, near Rag Dump 5, above Stirling. Comment
  CHSC50341  Rubus pensilvanicus Vernon Oswald 1990-5-14 4212 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CAS-BOT-BC421734  Rumex conglomeratus Lowell Ahart 1989-5-31 6331 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS115724  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  RSA755421  Rumex dentatus L. Ahart 2009-7-4 15998 Butte West side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterfowl Management Area, about 6 air miles southwest of Gridley. 21 Comment
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  CHSC113224  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-2 19433 Butte On the south side and below the high water line of the reservoir, about 2 1/2 miles (air) west of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 288 Comment
  CHSC113340  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CHSC52011  Sagina saginoides L. P. Janeway 1987-6-20 2271 Butte Along rd to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. Near the river. 1013 Comment
  RSA4630  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Jonesville. 1550 Comment
  CAS-BOT-BC103735  Salix exigua M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. Pennington quad. 19 Comment
  CHSC80067  Salix exigua L. P. Janeway; B. Castro 1999-6-4 6452 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  CHSC109067  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  CHSC65690  Salix gooddingii Vernon H. Oswald 1996-3-22 7249 Butte Sanctuary 1, S edge of Tract 2. 33 Comment
  CHSC9694  Salix laevigata E. L. Smith 1971-9-12 1066 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  RSA755039  Salix laevigata L. Ahart 2009-5-15 15687 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  SD934  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville, alogs stream 1500 Comment
  CHSC42434  Salix lucida subsp. lasiandra Lowell Ahart 1987-4-20 5492 Butte Along North Honcut Creek, abour 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC30916  Salsola tragus M. S. Taylor 1979-10-2 2207 Butte Sacramento River at Chico Landing, off River Road, ca. 5 mi w of Chico. 30 Comment
  CHSC90240  Sambucus mexicana Robert Kissane 1989-4-22 15 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  SEINET12326926  Sambucus mexicana Unknown 1978-1 16 Butte collected 2yds W of Cohasset Rd. 16.7 mi NE of Chico. Chapparal Comment
  SD4966  Sambucus racemosa E. B. Copeland 1930-7-12 Butte Above Jonesville 2100 Comment
  CHSC1975  Sanicula bipinnata A. Goekler 1929-3-20 Butte Chico. 57 Comment
  CHSC31405  Sanicula bipinnata Stephen M. Turek 1980-4-14 6 Butte Ca. 3 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  CHSC90615  Sanicula bipinnata Chris Ottinger 1983-3-15 17 Butte Ca. 0.6 km sw of Covered Bridge, s side of Butte Creek, 10.2 km ese of Chico. 120 Comment
  CHSC1978  Sanicula bipinnatifida E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC31412  Sanicula bipinnatifida Howard Paul 1980-4-23 11 Butte Along the s rim of Chico Creek canyon, ca. .2 mi n of Highway 32, 6.2 mi e of Chico. 259 Comment
  CHSC115282  Sanicula bipinnatifida var. flava Lowell Ahart 2015-4-30 20118 Butte About 1/4 miles south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  SEINET10840962  Sanicula crassicaulis Mary Susan Taylor, K. Tharp 1983-4-8 Taylor 4287 Butte T19N R4E se/ne sec 1. Oroville Dam quad. Immediate vicinity of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 1200 ft. 366 Comment
  CHSC60948  Sanicula graveolens Lowell Ahart 1993-6-26 7045 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
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC1985  Sanicula tuberosa A. Goekler 1929-4-21 Butte Paradise. 609 Comment
  SEINET10454589  Sanicula tuberosa Mary Susan Taylor 1979-3-20 Taylor 1938 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
  UCD80215  Saponaria officinalis CNPS SN Foothill Team 2005-7-6 SNNR 0478 Butte CDFG Daugherty Hill Wildlife Area. 242 Comment
  CHSC43961  Satureja douglasii V. Oswald; B. Castro, D. Perske 1988-5-28 3345 Butte Douglas Perske's property located at the end of Bull Creek Rd. e of Cohasset Rd., ca. 1 mi nne of Cohasset School. 890 Comment
  CAS-BOT-BC436866  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 36 Comment
  CDA25444  Saxifraga oregana T. C. Fuller 1962-7-12 9206 Butte 0.2 mile east of Jonesville. 0 Comment
  CHSC43658  Scabiosa atropurpurea Vernon Oswald 1983-7-24 907 Butte Boat ramp, Bidwell State Park, on River Rd. w of Chico near the washout. Comment
  CAS-BOT-BC283623  Schedonorus pratensis Lowell Ahart 1982-4-29 3399 Butte Along side of the dirt road, W of the Gray Lodge Headquarters ca 0.25 mile, Gray Lodge, ca 12 miles SW of Gridley 35 Comment
  CAS-BOT-BC111661  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 miles west of Biggs. Comment
  CHSC58284  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  UCD49964  Schoenoplectus mucronatus S. Galen Smith; Malcolm A. Nobs 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland, Butte County. Comment
  CAS-BOT-BC30746  Scirpus congdonii Lowell Ahart 1987-7-8 5813 Butte Along Walker Plains Road, about 1/8 mile north of coyote Gap, about 5 miles east of Pulga 1280 Comment
  CHSC38913  Scirpus diffusus Vernon Oswald 1983-5-23 548 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek e of Brown's Hole. 201 Comment
  NY380581  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  SEINET10971844  Scirpus setaceus Lowell Ahart 1984-6-8 Ahart 4685 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  CHSC101316  Scleranthus annuus subsp. annuus Lowell Ahart 2009-4-22 15574 Butte West side of the 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
  UC1562408  Scleranthus annuus subsp. annuus Lowell Ahart 1990-6-16 6515 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (below the high water line of Lake Oroville) 243 Comment
  CAS-BOT-BC239961  Scribneria bolanderi John Thomas Howell 1967-6-22 42617 Butte Magalia 701 Comment
  CHSC30031  Scribneria bolanderi L. Ahart 1980-5-4 2212 Butte About 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC19935  Scrophularia californica subsp. floribunda M. S. Taylor 1975-2-16 372 Butte Ca. 1.4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  NY415670  Scutellaria austiniae Mrs. C. C. Bruce 05 1898 1835 Butte Butte Creek Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CHSC102849  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards 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. 436 Comment
  RSA755770  Scutellaria siphocampyloides L. Ahart 2009-5-30 15808 Butte Southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 437 Comment
  CHSC52203  Scutellaria tuberosa L. P. Janeway 1988-5-19 2669 Butte Along Cohasset Rd near the Anderson Mill site; near the county line. 1133 Comment
  HSC40295  Sedella congdonii J. P. Smith, J. O. Sawyer 1973-4-14 6043 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC24138  Sedella pumila B. Bunge 1976-3-3 1 Butte Ca. 100 yd e of Cherokee Rd on Table Mt. 6.5 mi n of Oroville. 396 Comment
  CHSC3952  Sedella pumila E. P. Parreno 1967-4-3 Butte Tabletop Mt. Comment
  CHSC90602  Sedella pumila Andrew D. Lane 1984-4-19 4 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  RSA32758  Sedella pumila A. A. Heller 1938-4-22 15042 Butte About 9 miles north of Chico along U, S. Highway 99E. Comment
  CHSC32684  Sedum albomarginatum M. S. Taylor; D. Hemphill 1981-3-18 3418 Butte N side of Pulga Rd, at its jct with Hwy 70 at Pulg ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  JEPS26934  Sedum albomarginatum P. C. Hutchison 1961-6-9 2101 Butte w side Feather River Canyon (at Pulga Bridge, on steep serpentine cliffs); w side Feather River Canyon at Pulga Bridge Comment
  CHSC24884  Sedum spathulifolium V. L. Keeran 1976-4-20 10 Butte Ca. 4 m e of Butte Creek and 0.41 km s of Covered Bridge, 10.66 km ese of Chico. 127 Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  CAS-BOT-BC62117  Selaginella hansenii Lowell Ahart 1961-3-3 s.n. Butte Salmon Hole, Chico 91 Comment
  CHSC28877  Selaginella hansenii M. S. Taylor 1980-3-1 2330 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC32766  Selaginella hansenii J. D. Jokerst 1981-3-29 1277 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  SEINET10530434  Selaginella hansenii Mary Susan Taylor 1981-1-5 Taylor 3371 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  SEINET11716021  Selaginella hansenii P. L. Venable 1978-1 12 Butte 6 mi N of Oroville, 1 mi W of Cherokee Road 305 Comment
  CHSC31518  Selaginella wallacei L. Ahart 1973-12-28 292 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC72949  Selaginella wallacei M. S. Taylor 1980-9-27 3345 Butte S side of Hwy. 70 at Butte-Plumas Co. line 549 Comment
  HSC66272  Selaginella wallacei M. S. Taylor, J. D. Jokerst, L. Ahart 1980-4-4 2439 Butte Junction of Rocky Honcut Creek and Swedes Flat Rd., 2 mi. E of Oroville-Bangor Hwy., 10 mi. SE of Oroville 366 Comment
  CDA14051  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-1 13699 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  SEINET10474903  Senecio aronicoides Mary Susan Taylor 1978-7-19 Taylor 1781 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  RSA302659  Senecio eurycephalus var. lewisrosei J. R. Shevock 1972-5-19 1777 Butte Hwy 70, Feather River Canyon. 21 Comment
  CHSC24645  Senecio integerrimus var. major S. Deaton 1976-4-23 38 Butte 20 ft sw of Feather Falls trail, ca. 1 3/4 mi n of Falls parking lot. 853 Comment
  CDA38819  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte On the basalt rim, high east edge of Big Chico Creek, about 20 yards west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CHSC113948  Senecio sylvaticus Lowell Ahart 2014-8-13 19706 Butte 10 yards east of the east edge of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS94732  Senecio sylvaticus Lowell Ahart 1998-6-3 7966 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC108821  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  CHSC113286  Senecio vulgaris Lowell Ahart 2014-4-15 19353 Butte Steep sides of rocky point, 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. 253 Comment
  CHSC420  Senecio vulgaris P. Delaplane 1965-3-20 4 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CHSC42455  Senecio vulgaris Lowell Ahart 1987-5-6 5505 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  SEINET10938099  Senecio vulgaris Mary Susan Taylor 1982-4-28 Taylor 4354 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC20121  Sequoiadendron giganteum M. S. Taylor 1975-5-6 562 Butte California State University, Chico. Ca. 60 m s of Holt Hall, ca. 10 m n of Big Chico Creek. 60 Comment
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Jul 25 2018
  CHSC26672  Sericocarpus oregonensis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1502 Butte Scattered on E side of the Skyway, in Inskip. 1615 Comment
  CHSC78516  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  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
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS115327 Image available Sherardia arvensis Lowell Ahart 2009-4-17 15547 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  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
  SEINET7067152  Sidalcea calycosa A. G. Vestal 1947-4-30 s.n. Butte Lava field on Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 624251mE, 4380083mN. Comment
  UC725656  Sidalcea calycosa A. A. Heller 1942-5-17 16474 Butte near where the road dips down toward Oroville (s end of the bare lava top of Table Mountain); s end bare lava top Table Mountain Comment
  HSC46141  Sidalcea calycosa subsp. calycosa J. P. Smith, J. O. Sawyer 1973-4-14 6053 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC41889  Sidalcea gigantea Lowell Ahart 1986-8-15 5386 Butte Along a small stream, along the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  SJSU8457  Sidalcea hartwegii J. B. Willis Jr. 1969-5-3 87 Butte by State Rte 70, 7 mi S of Oroville Comment
  RSA32843  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Clear Creek, Paradise Grade Comment
  SBBG71494  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Little Chico Crk Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  SEINET10970676  Sidalcea hartwegii Lowell Ahart 1984-5-7 Ahart 4594 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC44085  Sidalcea hirsuta John E. Hunter 1986-3-31 42 Butte Vacant lot within City of Chico, ca. 75 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  SJSU8536  Sidalcea hirsuta J. B. Willis Jr. 1969-5-3 99 Butte by State Hwy 70 c. 7 mi NE of Oroville Comment
  UC1013145  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19536 Butte about 8 mi e Oroville (Oroville-Forbestown Road); e of Oroville, Oroville-Forbestown Road Comment
  RSA739637  Sidalcea malviflora subsp. celata B. Castro, David Toren 2005-7-21 1520 Butte 9 air miles NE of Paradise, 2.5 miles NE of Flea Mtn, at the crossing of Lockerman Creek by USFS road 24N13. 951 Comment
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Aug 6 2019
  CHSC38553  Sidalcea robusta Vernon Oswald 1983-5-21 517 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC43400  Silene antirrhina Lowell Ahart 1979-5-29 1901 Butte About 1/4 mile east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 487 Comment
  SD8103  Silene californica Daniel Cleveland 1882-7-14 Butte Sutton house. Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  UC1137861  Silene gallica J. E. Sowder 1933-6-6 84 Butte 1/4 mi w Pentz; Chico Quad., w of Pentz Comment
  CAS-BOT-BC387068  Silene gallica Lowell Ahart 1988-5-1 5974 Butte North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  NY342642  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1550 Comment
  CHSC19525  Silybum marianum J. H. Sneed 1972-3-5 8 Butte Found along side Chico-Butte City Hwy. s of Chico. 3.5 mi on right side of road. 59 Comment
  CHSC38044  Sinapis arvensis R. E. Preston 1983-1-9 374 Butte At roadside; on w side of Nelson Rd, 100 ft e of RR crossing, Nelson. 36 Comment
  CAS-BOT-BC75277  Sisymbrium officinale John Thomas Howell 1962-6-15 37482 Butte Sierra Nevada. Magalia. 731 Comment
  CDA31956  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC20110  Sisyrinchium bellum M. S. Taylor 1975-4-26 508 Butte Ca. 50 m ne of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC46234  Sisyrinchium bellum Pauleen Broyles 1987-7-5 1072 Butte Ca 7 km n. of Inskip on Bull Hill Rd., along Coon Creek. Comment
  JEPS108778  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  SEINET10971622  Sisyrinchium bellum Lowell Ahart 1983-8-16 Ahart 4313 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  JEPS119785  Smilax californica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18007 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  NY821124  Solanum parishii H. M. Edwards 06 1917 s.n. Butte De Sabla Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  UC179684  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CAS-BOT-BC158896  Sorbus scopulina Lowell Ahart 1982-9-13 791 Butte Near the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  SACT002287  Sorghum halepense Herbert Copeland 1923-8-14 Butte In mud. Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCR188719  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET10594641  Sorghum halepense H. E. Brown 1896-10-9 Brown 113 Butte Near Clear Creek 53 Comment
  CHSC108763  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC51876  Spartium junceum L. P. Janeway 1988-6-5 2733 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC93365  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 424 Comment
  UC1562500  Spergula arvensis subsp. arvensis Barbara Ertter with Lowell Ahart 1986-4-13 5890 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC103974  Spergularia bocconi Lowell Ahart 2010-5-7 16610 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  JEPS115355  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC390131  Spergularia bocconi Lowell Ahart 1981-4-6 2743 Butte Sutter Buttes Region. West of the Gray Lodge Headquarters, about 8 miles southwest of Gridley 35 Comment
  SEINET10833464  Spergularia rubra Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4707 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA4428  Spiraea densiflora var. splendens E. B. Copeland 1931-6-19 649 Butte Jonesville. At 'the Summit'. 2100 Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CAS-BOT-BC149708  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back/east of Jonesville 2133 Comment
  SEINET9320865  Stachys ajugoides var. ajugoides Unknown 1996-7-9 13166 Butte Plumas National Forest Comment
  CHSC46292  Stachys ajugoides var. rigida Vernon Oswald 1989-5-11 3764 Butte Santos Rd between Hwy 32 and Doe Mill Ridge, s of Little Chico Creek. 365 Comment
  CHSC39397  Stachys pycnantha L. Ahart 1983-9-17 4428 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  SEINET12326786  Stachys pycnantha Unknown 1983-1 4428 Butte ca 0.12 mi NE of Kunkle Reservoir, S of Paradise 600 Comment
  CHSC113251  Stebbinsoseris heterocarpa Lowell Ahart 2014-4-20 19389 Butte Near the bottom of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  SD147596  Stellaria crispa Lowell Ahart 1981-9-15 3165 Butte Along French Creek 1299 Comment
  SEINET10833472  Stellaria jamesiana Mary Susan Taylor 1978-7-19 Taylor 1753 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC34212  Stellaria longipes var. longipes M. S. Taylor; L. Ahart 1981-8-16 4198 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC35036  Stellaria longipes var. longipes R. A. Schlising 1980-6-8 3869 Butte NE of Butte Meadows and SW of Jonesville, along Humboldt Road to the W of Cherry Hill Campground. At meadow margin. 1402 Comment
  CHSC115471  Stellaria media L. P. Janeway 2015-2-18 11633 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC43409  Stellaria nitens Lowell Ahart 1978-4-19 1651 Butte Along the trail to Feather Falls, about 3 miles north-west of the town of Feather Falls. 609 Comment
  CHSC46557  Stellaria obtusa V. Oswald; L. Ahart 1989-7-21 3875 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC48281  Stellaria obtusa Vernon Oswald 1987-7-29 3160 Butte Near Coon Hollow Rd. at the W. Branch of the Feather River, ca. 2.5 mi (air) n of Philbrook Reservoir. On the edge of a small backwater of the river. 1621 Comment
  UC1564731  Stellaria obtusa V. Oswald and L. Ahart 1989-7-21 3875 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  JEPS120002  Stellaria pallida Lowell Ahart 2012-4-30 17943 Butte On the north side of Bloody Pin Trail, west of Guardian Trail about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC25539  Streptanthus diversifolius Robert A. Schlising 1974-4-29 3122 Butte Lava outcrops of Table Mountain, few miles north of Oroville, off Cherokee Road. 365 Comment
  CHSC38025  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mi ese of Kunkle Reservoir, on W. Branch Feather River arm of Lake Oroville, ca. 4.5 mi se of Paradise. 280 Comment
  NY888395  Streptanthus longisiliquus G. Clifton 1997-6-13 35529 Butte Ca. 0.8 km. North of Robley Point 939 Comment
  CAS-BOT-BC87441  Streptanthus polygaloides Clarence R. Quick 1964-7-9 64 -54 Butte Sierra Nevada. North of Jarbo Gap. Comment
  CHSC95039  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte Northern High Sierra Nevada. West side of Coutelenc Road about 150 m north of Skyway; at 'Magalia Serpentine.' Thin soil over rocky serpentine; open ground around McNab Cypress and buckbrush. Petals reddish purple with white edges; calyx yellow-green. 713 Comment
  UC1492817  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4174 Butte near Magalia Railroad trestle Comment
  UCD164226  Streptanthus polygaloides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 303 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 314 Comment
  CHSC36696  Streptanthus tortuosus R. E. Preston 1981-6-16 88 Butte Ca. 10.5 mi ne of Paradise. 1127 Comment
  CHSC92593  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CHSC116998  Streptanthus tortuosus var. pallidus Lowell Ahart 2016-6-4 20917 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  JEPS108791  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
  SEINET6647401  Styrax officinalis var. californicus M. J. Williams, W. Roderick 1984-5-25 84- 23 -2 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam. Comment
  CHSC52375  Styrax officinalis var. redivivus L. P. Janeway 1989-5-17 3255 Butte Along rd to Forbestown Diversion Dam 2.5 mi from Forbestown Rd. Single small shrub at top of cutbank. 845 Comment
  CHSC46873  Suaeda calceoliformis Vernon Oswald 1989-9-6 3981 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. Roadside drainage. 19 Comment
  UC1490565  Suaeda calceoliformis Lowell Ahart 1981-11-6 3227 Butte about 12 mi sw Gridley (e of Gray Lodge Waterfowl Management Headquarters, w of parking area, about 0.5 mi w of Pennington Road,) 35 Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC29799  Swertia albicaulis var. nitida M. S. Taylor; J. D. Jokerst 1980-6-14 2880 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  SD4985  Symphoricarpos acutus E. B. Copeland 1930-7-7 Butte Jonesville. 1600 Comment
  CAS-BOT-BC99223  Symphyotrichum ascendens H. F. Copeland 1920-8-1 168 Butte Jonesville 1219 Comment
  CHSC34784  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Ca 150 m W of the dam at Wyandotte Lake, ca 8 mi W of Oroville. 450 Comment
  CHSC38323  Symphyotrichum chilense Vernon Oswald 1983-9-10 1037 Butte Upper Bidwell Park, Chico, about 200 ft. E of the parking lot at Day Camp. 91 Comment
  CAS-BOT-BC98057  Symphyotrichum lentum John Thomas Howell 1961-9-22 36727 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC98088  Symphyotrichum spathulatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  SBBG127938  Symphyotrichum spathulatum var. yosemitanum L. Ahart 2010-9-21 17227 Butte S side of poor dirt rd, ca. 1 mi (air) SE of Philbrook Reservoir 1899 Comment
  UCD136687  Symphyotrichum subulatum var. parviflorum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CAS-BOT-BC221936  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37422 Butte 5 miles west of Oroville Comment
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  CDA14069  Tauschia hartwegii G. F. Hrusa, T. D. Wilfred 1997-5-1 13717 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  UC1246758  Tauschia hartwegii Howard Scott Gentry and Steven Koch 1962-6-19 19767 Butte along road from Chico 6-7 mi from Cohasset 609 Comment
  SEINET10454611  Tauschia hartwegii Mary Susan Taylor 1980-6-14 Taylor 2885 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC100907  Taxus brevifolia R. A. Schlising; R. Banchero 1980-6-12 3685 Butte 4.6 miles south of Butte/Tehama County line, along Highway 32. Comment
  CHSC81446  Taxus brevifolia D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  SEINET10471598  Taxus brevifolia Mitzel 1977-4-3 MITZEL 10 Butte Rarely occurs ca 6 m SE of Forest Ranch and 15 yds E of Little Chico Creek. Heavily forested area within mixed coniferous forest. Soil clay loam. 792 Comment
  SEINET10483066  Tellima grandiflora Mary Susan Taylor 1975-4-29 Taylor 545 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CAS-BOT-BC392315  Thalictrum fendleri E. B. Copeland 1929-7-22 361 Butte Jonesville 1500 Comment
  RSA4209  Thalictrum fendleri E. B. Copeland 1929-7-22 361 Butte Jonesville. 1500 Comment
  CDA38764  Thalictrum fendleri var. polycarpum L. Ahart 2012-4-3 17946 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  UC336553  Thalictrum fendleri var. polycarpum Edw. L. Greene June 1890 Butte Chico Comment
  CHSC90919  Thlaspi arvense Lowell Ahart 2005-4-18 11745 Butte On the east side of Seven Mile Lane, about 1 mile north of the intersection of Seven Mile Lane and Nelson West Road. 31 Comment
  CAS-BOT-BC88226  Thysanocarpus curvipes John Thomas Howell 1978-4-17 52841 Butte Sierra Nevada. Table Mountain. 381 Comment
  CAS-BOT-BC88227  Thysanocarpus curvipes Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham. Comment
  HSC27263  Thysanocarpus curvipes J. P. Smith 1972-3-23 5094 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  CHSC35747  Thysanocarpus curvipes var. elegans R. E. Preston 1982-4-29 269 Butte At side of Hwy 70, ca. 0.2 mi s of Butte/Plumas Co. line. 487 Comment
  CAS-BOT-BC67299  Thysanocarpus radians A. A. Heller 1928-3-12 14481 Butte Near the Hooker Oak east of Chico. Comment
  CHSC3993  Thysanocarpus radians Wayne O. Baum 1967-3-17 16 Butte In walnut orchard nw. of the Mangrove Ave. and Cohasset Rd intersection. 60 Comment
  CHSC50657  Thysanocarpus radians Lowell Ahart 1990-4-23 6463 Butte In field, about 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC568  Thysanocarpus radians P. Delaplane 1965-4-6 47 Butte Ca. 3/4 mi. above turnoff to Richardson Springs Rd. on Cohasset Rd. 243 Comment
  JEPS94730  Torilis arvensis Lowell Ahart 1998-7-1 8018 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
  SEINET7057356  Torilis arvensis David H. French 1968-6-2 2877 Butte 5.7 mile southeast of Pentz Store, ca. 10 mile north of Oroville. Feather River Highway. Elevation 500 feet. 152 Comment
  CHSC39321  Torilis arvensis subsp. purpurea Lowell Ahart 1983-6-26 4111 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. 500 Comment
  SEINET10972981  Torilis japonica Mary Susan Taylor 1975-6-30 Taylor 818 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  CHSC97415  Torilis nodosa Robert Fischer 2006-4-30 1019 Butte Chico. Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 518 Comment
  CHSC33799  Torreya californica M. S. Taylor 1981-4-28 3568 Butte Ca. 1/10 mi n of rd 23N28.2, ca. 500 ft e of Chico Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  CAS-BOT-BC239831  Torreyochloa pallida var. pauciflora Lowell Ahart 1981-9-15 3172 Butte Along French Creek 1300 Comment
  CHSC49571  Torreyochloa pallida var. pauciflora Vernon Oswald 1987-6-23 3018 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. Along the edge of a gravel pit. 1889 Comment
  JEPS104051  Torreyochloa pallida var. pauciflora Lowell Ahart 2003-8-24 10541 Butte In Butte Creek, in Butte Creek House Meadow, ca 100 yd e of the road, ca 9 mi (air) e of Butte Meadows. 1777 Comment
  UC1609523  Torreyochloa pallida var. pauciflora Lowell Ahart 1993-7-23 7097 Butte about 6 air mi ne of Feather Falls (about 100 yards w of bridge across Fall River, on w side of Fall River); Fall River 1036 Comment
  CHSC111122  Toxicodendron diversilobum Lowell Ahart 2012-5-17 18078 Butte North of Big Chico Creek, on both sides 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. 76 Comment
  SEINET10454896  Trachelospermum jasminoides Mary Susan Taylor 1975-6-22 Taylor 789 Butte California State University, Chico, campus. 61 Comment
  CHSC33904  Tragopogon dubius M. S. Tayl