Search Results — 2000 specimen records retrieved (1612 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
  CHSC117394  Acer circinatum Steve Edwards 1992-5-17 Butte Vilas Road, 0.9 miles from its junction with Cohasset Road. Comment
  UC600416  Acer glabrum var. glabrum H. F. Copeland 1932-6-29 Butte at the summit Jonesville Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  SFV10861  Acer macrophyllum M. L. Vincent 1963-6-8 409 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
  JEPS119736  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC38313  Achillea millefolium Vernon Oswald 1983-5-11 474 Butte Upper Bidwell Park, Chico, on the slope s of the Pistol Range on the s border of the Golf Course. 121 Comment
  CAS-BOT-BC216465  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit 2154 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
  RSA715536  Achnatherum stillmanii L. P. Janeway, B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  SEINET11839699  Achyrachaena mollis D. K. Parker 1981-1 17 Butte Large population, ca 5 m W Hwy 99, 8.5 km N of Chico 65 Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC113449  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC38502  Acmispon americanus var. americanus Vernon Oswald 1983-6-9 663 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 213 Comment
  CHSC46221  Acmispon argophyllus var. fremontii Pauleen Broyles 1987-6-19 1056 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC78146  Acmispon brachycarpus Lowell Ahart 2000-5-31 8424 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  JEPS120584  Acmispon brachycarpus Lowell Ahart 2013-11-18 19281 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS127022  Acmispon brachycarpus Lowell Ahart 2016-6-4 20921 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CHSC58266  Acmispon glaber Lowell Ahart 1992-5-9 6763 Butte Growing on the north side of the dirt road, on the North side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. 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. Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC108831  Acmispon strigosus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CHSC28677  Aconogonon davisiae M. S. Taylor 1978-7-18 1705 A Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  CHSC90242  Adenostoma fasciculatum T. H. Watroba 1989-4-18 20 Butte Ca. 50 yds e of Cohasset Rd., Cohasset Ridge, 8 mi nne of Chico. 548 Comment
  CHSC12110  Adiantum aleuticum J. M. Pitts 1972-4-16 131 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC44611  Adiantum aleuticum Vernon Oswald 1985-7-15 1900 Butte Near Cresta Tunnel below the falls on Bear Ranch Creek via the dirt road opposite Cresta Rest Area on Hwy 70. 463 Comment
  CHSC41132  Adiantum jordanii R. A. Hunt 1976-4-28 1 Butte Ca. 1 km n on Helltown Rd on steep embankment on e side of road. Ca. 18.5 km ene of CSU@Chico on course 66 degrees 30 minutes. In Butte Canyon ca. 1 km n of junction of Helltown Rd. and Humbug Rd. 225 Comment
  SEINET11715826  Adiantum jordanii D. J. Straub 1977-1 5 Butte ca 50 ft S of Big Chico Creek and 5050 ft E of Hooker Oak pool, 1 mi E of Chico 91 Comment
  CHSC81522  Aesculus californica Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. About 200 yards from Chico Creek. 91 Comment
  CHSC41255  Agoseris glauca var. monticola S. C. Morey 1983-7-1 474 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC46609  Agoseris glauca var. monticola Vernon H. Oswald 1989-7-27 3898 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC90943  Agoseris heterophylla Lowell Ahart 2005-4-18 11730 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
  CHSC30698  Agoseris retrorsa M. S. Taylor 1980-5-27 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CAS-BOT-BC447800  Agrimonia gryposepala Strothman 1913-7-1 233 Butte Tilden, Plumas Forest 792 Comment
  CHSC111146  Agrostis avenacea Lowell Ahart 2012-6-5 18167 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  SEINET10508561  Agrostis diegoensis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4091 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  JEPS98703  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S and N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CHSC46688  Agrostis pallens V. Oswald; L. Ahart 1989-8-15 3947 Butte Metavolcanic outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. 1920 Comment
  CHSC50809  Agrostis pallens Vernon Oswald; Lowell Ahart 1990-7-31 4418 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC49501  Agrostis stolonifera Vernon Oswald 1987-7-16 3126 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CHSC105685  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 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
  JEPS121949  Agrostis thurberiana Lowell Ahart 2014-7-7 19586 Butte West edge of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC600598  Agrostis variabilis H. F. Copeland 1932-8-17 Butte at the Summit (Jonesville); Jonesville 2000 Comment
  CAS-BOT-BC47977  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Forbestown Res. - Ner the dirt road at the Forestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CAS-BOT-BC138422  Aira caryophyllea Lowell Ahart 1980-5-4 2165 Butte Thermalito. 65 Comment
  CHSC25042  Aira caryophyllea Rich Leverton 1974-3-3 Butte 5 mi n of Chico on Cohasset Hwy. 200 yards s of road on Jesse Ranch. 76 Comment
  CHSC42838  Aira caryophyllea Lowell Ahart 1987-5-6 5546 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  HSC41092  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-4-14 6046 Butte Bruce Ln. between Humboldt Rd. and Skyway Rd., E of Chico Comment
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  CHSC33857  Aira elegans J. D. Jokerst; M. S. Taylor 1980-5-15 695 Butte Top of Cohasset Ridge ca 1/4 mi E of Cohasset Rd. Comment
  CDA1711  Aira elegantissima L. Ahart 2000-5-17 8363 Butte About 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. Comment
  CDA43009  Albizia julibrissin L. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC445313  Alisma lanceolatum Lowell Ahart 1981-5-25 2837 Butte Along Central House Road, Honcut. 35 Comment
  UCD111669  Allium Christopher Mallek 2007-5-4 s.n. Butte Magalia. 756 Comment
  CHSC36908  Allium amplectens R. A. Schlising 1980-6-14 3707 Butte N of Lake Oroville and E of Berry Creek (village) at Big Bald Rock. 914 Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  UC767479  Allium amplectens R. F. Hoover 1938-4-24 3246 Butte 3 mi n Chico Comment
  CAS-BOT-BC460374  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1899 Butte Fields near Chico Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  SEINET3884197  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge.; 0 518 Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  UC725435  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit of Table Mountain Table Mountain 304 Comment
  CDA14201  Allium membranaceum G. F. Hrusa 1997-5-29 13803 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC36954  Allium membranaceum R. Schlising; R. Banchero 1980-6-5 3639 Butte N of Lake Oroville along Hwy 70, ca 3 mi S of the Pulga Crossing of Feather River. 640 Comment
  CAS-BOT-BC472972  Allium membranaceum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC30815  Allium peninsulare M. S. Taylor; J. D. Jokerst 1980-4-19 2546 Butte S side of Butte Creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  POM193389  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville. 1500 Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  SEINET10969173  Allophyllum divaricatum Lowell Ahart 1984-6-8 Ahart 4673 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CAS-BOT-BC171273  Alnus incana subsp. tenuifolia H. F. Copeland 1929-6-12 s.n. Butte Jonesville, beside Jones Creek 1524 Comment
  CDA9273  Alnus rhombifolia D. G. Kelch 2006-8-2 6 .353 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC38268  Alnus rhombifolia Vernon Oswald 1983-5-8 450 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel ca. 300 ft downstream from Chico Creek. 79 Comment
  HSC95373  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte N Table Mt., 7 mi. N of Oroville, 1.75 mi. W of iron gate and fence, W of Cherokee Rd. 272 Comment
  CHSC115153  Amaranthus albus Lowell Ahart 2015-6-6 20202 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC116126  Amaranthus albus Lowell Ahart 2015-11-7 20615 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  JEPS98337  Amaranthus palmeri Lowell Ahart 2000-7-23 8605 Butte 2 1/2 mi S of Durham (W edge and side of the Midway, N of Butte Creek) 45 Comment
  CHSC50639  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte Along the edges of Palm Avenue, about 1 /12 mile east of Larkin Raod, about 21/2 miles north-east of East Gridley. 30 Comment
  CHSC31525  Amaranthus retroflexus L. Ahart 1977-11-20 1585 Butte On dry soil near our garden. Peter Ahart Ranch, Honcut. 50 Comment
  RSA29939  Amaranthus retroflexus I. L. Wiggins 1928-9-9 3345 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  UCD128818  Ambrosia psilostachya G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13076 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 35 Comment
  UCR219095  Ambrosia psilostachya George K. Helmkamp, E. A. Helmkamp 2009-9-5 15572 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET10497620  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 Ahart 4872 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CDA40596  Amsinckia intermedia L. Ahart 2005-4-14 11700 Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  HSC32633  Amsinckia lycopsoides Steven Lagos 1974-4-20 27 Butte Table Bluff Mtn. Comment
  UCD119742  Amsinckia menziesii A. A. Heller 1918-4-10 12982 Butte Waste ground at Chico. Comment
  RSA0090973  Amsinckia nitidicaulis A. A. Heller 1941-4-19 16068 Butte Richardson Springs Road north side of sandy gulch. In orchards at places about Chico. Comment
  CAS-BOT-BC45072  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 Butte The E side of the W branch of the Feather River, N of the bridge, about 4 road miles N of Stirling City 914 Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC50558  Anemone drummondii Vernon Oswald; Lowell Ahart 1990-6-20 4307 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1993 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  JEPS87517  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  CHSC48127  Antennaria argentea V. Oswald; L. Ahart 1988-6-17 3396 Butte Hillside at the N side of the dam at Lost Creek Reservoir. 1005 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  POM305519  Antirrhinum vexillocalyculatum subsp. intermedium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 848 Butte Feather River Hwy. Comment
  CHSC45189  Aphanes occidentalis Lowell Ahart 1973-4-15 193 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC28694  Apocynum androsaemifolium M. S. Taylor 1979-9-9 1921 Butte Inskip on the Skyway. 1467 Comment
  CHSC46839  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-18 214 Butte N part of county near Snow Mt. 2072 Comment
  CHSC52191  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 236 Butte Ca. 23.5 air mi E of Chico. 1219 Comment
  CHSC52681  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-25 303 Butte E part of county, near Milsap Bar. 640 Comment
  UC600706  Arabis glabra E. B. Copeland 1931-6-22 Butte Jonesville 1500 Comment
  CHSC102997  Arbutus menziesii Lowell Ahart 2009-8-23 16297 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
  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
  JEPS103529  Arceuthobium campylopodum Lowell Ahart 2002-6-21 9753 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CAS-BOT-BC409928  Arceuthobium campylopodum V. Oswald; Lowell Ahart 1988-7-29 3633 Butte along the road connecting Humboldt and Humbug Roads at a point 0.9 miles W of Humbud Road, ca. 3 miles E of Jonesville 1804 Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632997  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27475 Butte Cohasset. 630 Comment
  RSA633005  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27462 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC38826  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC38873  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15487 Butte 1 mile west of the Spring House on the Neal Road to Paradise. Comment
  CAS-BOT-BC24252  Arctostaphylos mewukka Carl B. Wolf 1937-3-29 8340 Butte Sierra Nevada Foothills, 3.5 mi. below Magalia on Oroville Rd. 487 Comment
  RSA178607  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte Near Forest Ranch Comment
  UC725752  Arctostaphylos mewukka A. A. Heller 1941-12-17 16337 Butte Neal Rd 3 mi below Paradise Comment
  UC726979  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte Pentz-Magalia Rd 4 mi below Paradise Comment
  JEPS120006  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC38564  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 Comment
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  RSA4477  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  UC478486  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte ridge e the Summit; Jonesville 2100 Comment
  CAS-BOT-BC46716  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC46718  Arctostaphylos patula F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  UCD53437  Arctostaphylos patula J. I. Mallory 1970-8-20 376 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1432 Comment
  SEINET11989221  Arctostaphylos truei J. T. Howell 1975-1 51100 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  UCD52615  Arctostaphylos viscida John Thomas Howell 1975-6-15 51108 Butte Skyway near Billie Road, Paradise, Butte County, Transition Zone. 609 Comment
  CAS-BOT-BC48299  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CDA42419  Arctostaphylos viscida subsp. viscida D. G. Kelch 2012-9-19 12 .362 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  RSA636987  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-6-20 27480 Butte Ponderosa Way, south of Cohasset. 750 Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CHSC41391  Arenaria kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CHSC78950  Aristida oligantha Lowell Ahart 2000-9-17 8692 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC28870  Aristolochia californica M. S. Taylor 1980-2-17 2359 Butte Along a dirt road, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  UCD137818  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 243 Comment
  SEINET10937924  Aristolochia californica Mary Susan Taylor 1975-4-29 Taylor 543 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-BC295831  Arnica dealbata Lowell Ahart 1986-7-2 5337 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CAS-BOT-BC82411  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC93962  Arnica discoidea R. D. Fischer 2004-6-20 758 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 scattered in open YPF at the south end of camp and west of pond. 1371 Comment
  CAS-BOT-BC90285  Artemisia douglasiana A. A. Heller 1928-6-20 14693 Butte Butte Meadows, along Butte Creek Comment
  CAS-BOT-BC400642  Asarum hartwegii Mrs. C. C. Bruce 1898-6-1 2423 Butte Day Hill Comment
  UCR219262  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2009-9-5 15591 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CHSC112457  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SEINET10913624  Asclepias speciosa Lowell Ahart 1988-6-29 Ahart 6112 Butte Along Bean Creek Road, ca 3/4 mi SW of Johnson Ranch, ca 2 1/4 mi S of Little Bald Rock 549 Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  CHSC111343  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte 10 yards south of the fence, about 80 yards northeast of the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 115 Comment
  CHSC40304  Astragalus gambelianus Lowell Ahart 1985-3-22 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 Comment
  SEINET10452224  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4851 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC27665  Astragalus pauperculus Mike O'Bryan; Robert A. Schlising 1978-4-17 3220 Butte N of Forest Ranch, on ridge projecting into canyon of Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  SEINET10452231  Astragalus pauperculus Mary Susan Taylor 1980-3-15 Taylor 2380 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC62099  Asyneuma prenanthoides L. P. Janeway 1993-7-12 4438 Butte Plumas National Forest. About 0.5 mi north of Mountain House; along Rd 22N49 1.2 mi southwest of Fourmile Ridge Road (22N33). 990 Comment
  CAS-BOT-BC68696  Athyrium filix-femina var. californicum Clarence R. Quick 1952-7-1 52 -122 Butte Sierra Nevada - Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CAS-BOT-BC68698  Athyrium filix-femina var. californicum J. Pitts 1971-4-16 133 Butte Doc's Place 7.9 mi. up Humbug Rd. from Honeyrun road - 100 yds SE of Road. Comment
  SEINET10471814  Athyrium filix-femina var. californicum Lowell Ahart 1985-7-24 Ahart 5149 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC33569  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-5-14 3728 Butte E side of 23N94, up Wildcat Creek (and nearby creeks) ca. 1 mi ne of Four Trees Rd, ca. 1 mi w of Four Trees on Oroville-Quincy Hwy. 1371 Comment
  UCSB63847  Athyrium filix-femina var. cyclosorum Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC108857  Athysanus pusillus Lowell Ahart 2012-2-22 17748 Butte On the west side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, 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
  SEINET10479057  Atriplex argentea subsp. expansa Lowell Ahart 1983-9-19 Ahart 4451 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CHSC37085  Atriplex triangularis L. Ahart 1982-10-11 3856 Butte On the sides of deep ditches, along shaded adges of roads, in low damp places, w of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC2826  Avena fatua David Prall 1965-3-14 14 Butte At roadside of Neal Rd. 1 mile East of HW. 99E. 106 Comment
  CHSC38789  Avena fatua Vernon Oswald 1983-3-14 186 Butte Upper Bidwell Park, Chico, on the north slope near rim rock on the level of the e end of Horseshoe L. 152 Comment
  CHSC71209  Avena fatua Lowell Ahart 1998-6-9 7985 Butte On the east side of Cherokee Road, across the road from the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET14287413  Avena fatua L. Ahart 1981-5-24 2835 Butte Peter Ahart Ranch, c. 2 mi N and 0.5 mi east of Honcut 50 Comment
  SEINET11682807  Avena fatua B. K. Madsen 1970-1 29 Butte ca 300 yds N of Honeyrun Rd, 1.5 mi NE of covered bridge at jct Humbug & Honeyrun Rds, E of Chico 229 Comment
  CHSC46165  Azolla filiculoides Lowell Ahart 1981-9-27 3214 Butte About 1/8 mile north-east of the intersection of Lower Wyandotte Road and Upper Palermo Road, about 4 miles north-east of Palermo. 73 Comment
  JEPS118096  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  JEPS120948  Azolla microphylla Lowell Ahart 2013-4-20 18550 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  RSA758832  Bacopa eisenii Peter Fritsch, Boni Cruz 2005-8-9 1789 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  RSA758602  Bacopa repens Peter Fritsch, Boni Cruz 2005-8-9 1788 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 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
  CHSC34774  Bassia hyssopifolia L. Ahart 1981-11-6 3222 Butte On banks of deep ditch, n side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  CHSC96901  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CDA42925  Bidens frondosa L. Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC28424  Bidens frondosa M. S. Taylor 1979-10-2 2208 Butte Sacramento River at Chico Landing, ca. 5 mi W of Chico. 30 Comment
  CHSC44047  Bistorta bistortoides L. P. Janeway 1987-6-27 2349 Butte Open alder-fringed mdw just east of Keyser Cr, 4.3 mi north of Ramsey Bar along the Concow Rd. 1478 Comment
  CHSC35627  Blennosperma nanum R. E. Preston 1982-2-18 166 Butte Field on S side of Keefer Lane, ca. 1 mi W of Cohasset Hwy; ca. 6 mi N of downtown Chico. 97 Comment
  RSA0084097  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  HSC92468  Blennosperma nanum var. nanum Jeanne McFarland, Kathy Meyer, Anne Mullenniex 1995-4-9 1 Butte N Table Mtn., S of Paradise on Cherokee Rd., at the E end of Table Mtn. proper 381 Comment
  JEPS117231  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  UCD114352  Boechera breweri subsp. shastaensis Robert E. Preston 1986-4-29 540 Butte ca. 6.5 km n of Oroville, on North Table Mtn. 366 Comment
  CAS-BOT-BC14290  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  RSA166314  Boisduvalia stricta D. M. Moore 1960-6-2 93 Butte Road to Richvale, 3.3 mi. W of junction with U.S. 40A at Oroville Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CHSC61333  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte On a steep bank along Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC39510  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Along the edge of Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CAS-BOT-BC145439  Briza maxima Lowell Ahart 1972-5-6 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC58285  Briza maxima Lowell Ahart 1992-5-9 6767 Butte On the west side of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  UCD57368  Briza maxima M. S. Taylor; J. D. Jokerst and L. Ahart 1980-5-24 2745 Butte Foothill Woodland. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC32370  Briza minor J. D. Jokerst 1979-5-2 1228 Butte Top of North Table Mt., ca. 200 m S of Cherokee Rd. 396 Comment
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  SEINET10932597  Brodiaea coronaria Mrs. R. M. Austin Austin 27 A Butte Iron Canyon Comment
  RSA21175  Brodiaea coronaria subsp. coronaria Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4.5 mi W of Oroville on road to Rickvale. 46 Comment
  CHSC113807  Brodiaea elegans M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  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-BC482927  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte Near the Chico airport Comment
  CAS-BOT-BC482928  Brodiaea elegans subsp. elegans A. A. Heller 1914-5-11 11385 Butte Hills 8 miles north of Oroville Comment
  POM169625  Brodiaea minor A. A. Heller, H. E. Brown 1902-5-10 5524 Butte Berry Canyon (Near Clear Creek). Comment
  UC1303078  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte Butte Meadows Comment
  POM109800  Brodiaea minor C. C. Bruce 1897-04 2123 Butte Oroville road. Comment
  RSA718343  Bromus carinatus L. Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardes Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  SEINET256388  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile N and 1/4 mile E of Honcut, about 12 miles S of Oroville 37 Comment
  CHSC94291  Bromus ciliatus Lowell Ahart 2006-7-16 12975 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC156026  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC156073  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1.5 mile east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CHSC2133  Bromus diandrus H. Silberman; D. Isaac 1949-5-9 Butte W. side of football field, CSC campus. 54 Comment
  CHSC4414  Bromus diandrus J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park. Chico. Comment
  CAS-BOT-BC155463  Bromus hordeaceus John Thomas Howell 1967-6-22 42631 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC66971  Bromus hordeaceus James D. Jokerst 1992-5-19 3361 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC44452  Bromus japonicus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  CAS-BOT-BC162466  Bromus laevipes Lowell Ahart 1984-6-10 4699 Butte Along road to Forbestown Diversion Dam. Along road about 2 miles southwest of the Forbestown Diversion Dam. Northeast of Forbestown. 700 Comment
  JEPS106201  Bromus laevipes Lowell Ahart 2004-5-27 10958 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
  SEINET10507835  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA712951  Bromus madritensis L. Ahart 2006-5-10 12622 Butte 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 Burdees bar, about 2 1/2 miles (air) southwest of Pulga. Comment
  CHSC101292  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  UCR143553  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville 1524 Comment
  CHSC28543  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On w side of Hwy 32 on edge of forest., ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC68912  Bromus orcuttianus Lowell Ahart 1997-7-11 7752 Butte South side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS113251  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of 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) northea 844 Comment
  UCD59073  Bromus orcuttianus H. F. Copeland 1930-7-21 s.n. Butte Jonesville. By Butte Creek. 1524 Comment
  CHSC38798  Bromus racemosus Vernon Oswald 1983-4-9 314 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CAS-BOT-BC161964  Bromus rubens Lowell Ahart 1987-5-6 5553 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  SEINET10791270  Bromus rubens M. Coulon 1974-4-29 Coulon 44 Butte Located approx. 80 ft. from intersection of East Ave. and Mariposa Ave on the NE side of Mariposa Ave., Chico. Along a roadside ditch. Soil very moist. Associates: Hordeum sp., Bromis mollis and Brassica sp. 61 Comment
  CAS-BOT-BC161616  Bromus sterilis John Thomas Howell 1973-7-9 49695 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  JEPS115954  Bromus sterilis Lowell Ahart 2009-4-26 15614 Butte East edge of a small meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CHSC99478  Callitriche heterophylla var. heterophylla Lowell Ahart 2008-6-13 14829 Butte In shallow water, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC29057  Callitriche marginata R. A. Schlising 1980-4-2 3542 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  JEPS117624  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 379 Comment
  CHSC103161  Calocedrus decurrens Lowell Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET10531074  Calocedrus decurrens Mary Susan Taylor 1975-2-16 Taylor 387 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  SEINET10872528  Calochortus albus Mary Susan Taylor 1980-4-27 Taylor 2567 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  CHSC2235  Calochortus luteus N. Maxwell 1936-6-27 Butte Richardson Springs road. 91 Comment
  CHSC67726  Calochortus luteus James D. Jokerst 1979-5-9 224 Butte At junction of Skyway and Coutolenc Rd. Magalia serpentine. Comment
  CHSC44980  Calochortus monophyllus R. E. Alumbaugh 1984-4-26 15 Butte Scattered 1.2 mi n of Butte creek and 5 ft e of Centerville rd, across from Centerville cemetary, 0.9 mi n of Centerville. 350 Comment
  CHSC90226  Calochortus monophyllus Eric M. Haney 1989-4-23 18 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  UC119761  Calochortus monophyllus Mrs. R. M. Austin May 1883 191 Butte Little Chico Creek Comment
  UC129304  Calochortus monophyllus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM109674  Calochortus monophyllus Mrs. R. M. Austin 1883-05 14 Butte Little Chico Creek Comment
  SEINET10469602  Calochortus monophyllus Lowell Ahart 1985-3-22 Ahart 4849 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  UC398904  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  UCD80424  Calochortus superbus CNPS SN Foothill Team 2005-5-4 SNFN 0201 b Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC40083  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Summit between the West Branch and North Fork of the Feather River on Highway 324, in the Arid Transition Life Zone. Comment
  CAS-BOT-BC494321  Calochortus tolmiei C. C., Mrs. Bruce 1898-5-1 2407 Butte Mountains Comment
  CAS-BOT-BC273297  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi. nw. of Chico Comment
  RSA789311  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca 10 mi NW of Chico and ca. 1/2 mile S of Broyles Rd fairly extensive pop. 61 Comment
  UCD129712  Calycadenia multiglandulosa L. Ahart; Peter Ahart 1984-6-10 4687 Butte Along the edge of a new subdivision road around 1 mile southeast of Hurleton, 1/2 mile east of Oak Grove Cemetary, around 10 miles east of Oroville. 500 Comment
  CAS-BOT-BC106087  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 miles south of Berry Creek Inn 609 Comment
  CAS-BOT-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 Comment
  CAS-BOT-BC106096  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CHSC84508  Calycadenia oppositifolia John Dittes; Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Cascade Range Foothills; Upper Bidwell Park; approximately 6.7 air-miles northeast of Chico, 2.5 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main road, just west of Parking Lot-R. 228 Comment
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Oct 16 2006
  CHSC84732  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle. 277 Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  CAS-BOT-BC270884  Calycadenia spicata Lowell Ahart 1977-6-26 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10904846  Calycadenia spicata Mary Susan Taylor 1977-8-16 Taylor 1436 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  CHSC27559  Calycadenia truncata Robert A. Schlising 1977-10-9 3207 Butte NE of Chico on Cohasset Road, 3.0 mi NE of jct road to Richardson Springs and 3.3 mi NE crossing of Mud Creek. 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
  SBBG7840  Calycadenia truncata D. D. Keck, J. Clausen 1935-6-25 3778 Butte 2.2 mi S of Flea Valley on rd to Yankee Hill Comment
  CAS-BOT-BC275386  Calycadenia truncata var. truncata John Thomas Howell 1951-6-26 27506 Butte Feather River Canyon 198 Comment
  CAS-BOT-BC90924  Calycanthus occidentalis A. A. Heller 1915-5-17 11874 Butte Canon [Canyon] of Chico Creek 5 miles east of Chico. Comment
  UCD166582  Calycanthus occidentalis Dylan O. Burge 2016-8-6 2122 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC1362  Calyptridium monospermum R. M. Staley 1952-7-10 Butte Butte Meadows. 1356 Comment
  CHSC33650  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3166 Butte North of Magalia along the Skyway, 0.6 mi S of De Sabla Reservoir. Comment
  UCD126161  Calystegia occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  UC843746  Camassia quamash A. A. Heller 1915-6-11 11959 Butte Butte Meadows in the Sierra Nevada Butte Meadows; Sierra Nevada, Butte Meadows 1219 Comment
  CHSC64246  Camassia quamash subsp. quamash S. C. Morey 1983-8-3 699 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10939006  Campanula prenanthoides Hall Hall 9797 Butte Butte Meadows, transition zone. 1311 Comment
  CHSC31956  Capsella bursa-pastoris J. D. Jokerst 1979-3-20 1146 A Butte Top of North Table Mt., ca. .5 mi N of the junction of Cherokee Rd. and the E edge of mountain. 396 Comment
  CHSC57175  Capsella bursa-pastoris Rickelle Syrdahl 1991-4-16 20 Butte Ca. 50 yds sw of jct of Centerville Rd and Honey Run RD, n side of Butte Creek at covered bridge. 152 Comment
  JEPS120952  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  UC117855  Cardamine californica R. M. A. Feb. 1883 332 Butte banks Little Chico Creek; banks Little Chico Creek Comment
  UCD114501  Cardamine californica R. E. Preston 1982-3-20 188 Butte at sides of Highway 70, 1.4 miles NE of Jarbo Gap, 17 miles NNE of Oroville. 670 Comment
  RSA0116210  Cardamine californica Mrs. R. M. Austin 1883-04 21 Butte Little Chico Creek. Comment
  JEPS105938  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville 502 Comment
  CHSC32631  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-4-2 3472 Butte South side of Forbestown Reservoir, at base of cliff, s side of Rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  UC1736729  Cardamine pachystigma var. dissectifolia Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CAS-BOT-BC18208  Carex John Thomas Howell 1967-6-22 42605 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC49388  Carex abrupta L. P. Janeway 1988-6-16 2809 Butte Along Butte Cr 1.4 mi S of Humboldt Rd via the road in the W side of the cyn. 1264 Comment
  CAS-BOT-BC17630  Carex alma John Thomas Howell 1955-6-15 30473 Butte Paradise. 518 Comment
  CHSC99414  Carex amplectens Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10530 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. 1740 Comment
  CHSC100933  Carex amplifolia R. A. Schlising; D. Burk, K. Tarp 1982-7-16 4295 Butte 1219 Comment
  CAS-BOT-BC17809  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek, on the north side of Bean Creek Road, about 0.75 mile southeast of Little Bald Rock. 944 Comment
  UC600698  Carex angustata H. F. Copeland 1927-5-6 1069 Butte Jonesville Comment
  SEINET10955616  Carex athrostachya Edwin B. Copel 1929-7-28 Copeland 607 a Butte Jonesville. 1550 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south 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. Comment
  OBI49295  Carex barbarae Lewis S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  SEINET3128047  Carex barbarae L. S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  CHSC48547  Carex bolanderi Vernon Oswald 1983-6-17 704 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 100 ft w of Day Camp. 91 Comment
  RSA767484  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  CAS-BOT-BC19417  Carex bolanderi L. P. Janeway 1987-5-20 2076 Butte Along Hwy 70, 2.1 miles NE of the Pulga Bridge, near Heniz Creek. In canyon of North Fork Feather River. 457 Comment
  CHSC48545  Carex brainerdii L. P. Janeway 1988-6-14 2780 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 952 Comment
  CAS-BOT-BC19601  Carex brainerdii L. P. Janeway 1988-6-14 2789 Butte East side of canyon of Cedar Creek 4.3 miles east of Lomo along the Cedar Loop. 1280 Comment
  SEINET10752408  Carex brainerdii Lawrence P. Janeway 1988-7-16 Janeway 3009 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 12. Along Colby Mountain Rd., 1/2 mi N of Jonesville. Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  CAS-BOT-BC34952  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Ca. 0.5 mile south of Bax Hall Flat, 1 mile east of Potter Ravine, immediately north of Lake Oroville. Comment
  CHSC99747  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  JEPS105631  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1100 Comment
  CHSC45709  Carex feta L. P. Janeway 1987-5-10 2046 Butte Mdw at jct of The Skyway and Doe Mill/Humbug Rd (just N of DeSable Res.). 838 Comment
  CAS-BOT-BC21237  Carex fracta Clarence Roy Quick 1963-7-16 63 -43 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC104784  Carex fracta L. P. Janeway 2010-6-19 10027 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC45050  Carex fracta Vernon Oswald 1983-7-19 881 Butte Humbug Summit Rd. 1.3 mi n-e of its jct. with the Skyway n of Inskip. 1554 Comment
  POM213963  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  SEINET7468095 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville. 1720 Comment
  SEINET7559369 Image available Carex fracta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11398 Butte Ca 7.5 mi NE of community of Butte Meadows, along road to Humboldt Summit, ca 0.8 road mi S of (downslope from) Humboldt Summit. 1914 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
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  JEPS121954  Carex integra Lowell Ahart 2014-7-7 19591 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC7779  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Southeast of Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC42815  Carex lemmonii L. P. Janeway 1987-6-13 2215 Butte Mdw just NE of jct of Concow Rd and rd to Flea Mtn. 1188 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
  RSA325125  Carex multicaulis M. S. Taylor 1981-3-24 3435 Butte Two mile stretch along both sides of Feather River Highway (70), just NE of Pulga to Cresta Powerhouse, ca. 20 miles NE of Oroville. 518 Comment
  SEINET10467331  Carex multicaulis Mary Susan Taylor 1981-3-31 Taylor 3450 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET3904180  Carex multicaulis L. W. Swift 1934-5-8 106 Butte Plumas National Forest, south of. Challenge, CA.; 0 914 Comment
  SEINET7568477 Image available Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 2 1/2 miles north-east of Forbestown. 853 Comment
  SEINET8055537 Image available Carex multicaulis M. S. Taylor 1981-5-13 3696 Butte Pulga SE quad; E side of 23N15.5, ca. 1 mi S of jct. with Four Trees Rd., ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy Comment
  SEINET10752877  Carex multicostata Vernon H. Oswald, Lowell Ahart 1988-7-26 Oswald 3630 Butte Snopw Mt. region located ca. 6 air mi SE of Jonesville. Comment
  CAS-BOT-BC119721  Carex nervina V. Oswald; Lowell Ahart 1988-7-26 3623 Butte Snow Mt. region ca. 6 air mi SE of Jonesville. 2026 Comment
  CHSC52244  Carex nudata L. P. Janeway 1987-5-20 2084 Butte At the edge of North Fork Feather River, 5.0 mi NE of the Pulga Bridge. 457 Comment
  CAS-BOT-BC119563  Carex nudata L. P. Janeway 1988-4-10 2614 Butte Chico quad, Along edge of Butte Creek just E of the Skyway. 70 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  JEPS100491  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  JEPS115981  Carex praegracilis Lowell Ahart 2009-6-3 15824 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 236 Comment
  CAS-BOT-BC118353  Carex praegracilis Lowell Ahart 1977-6-3 1437 Butte Peter Ahart Ranch, Honcut. Along the edge of a small wash. 50 Comment
  UCD140771  Carex praegracilis R. E. Preston 1982-4-4 215 Butte Gray Lodge wildlife management area. 18 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC47140  Carex serratodens Joyce Lacey; Dave Wieley 1989-4-30 Butte Low in the cyn of N Fk Feather River; in seep area (ditch) along Hwy 70 immediately west of the 'Pulga' bridge over the river. 472 Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC41301  Carex subfusca S. C. Morey 1983-7-22 537 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC83266  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7621 Butte High Cascade Range. Along the County Road above the Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  SEINET8573794 Image available Carex subfusca Unknown 2009-1 24508 Butte Comment
  UCD141166  Carex subfusca L. P. Janeway 1986-8-31 1809 Butte along edge of Philbrook Road 2 miles west of Philbrook Dam. 1569 Comment
  SEINET12569333 Image available Carex xerophila L. P. Janeway 2006-1 8595 Butte Northern Sierra Foothills: "Magalia Serpentine," east side of Coutolene Road, between that road and the first bend in the road down to Magalis Dam 707 Comment
  CHSC109660  Carya glabra Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 Comment
  JEPS120052  Carya glabra Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near table 9, Lower Bidwell Park, Chico. Comment
  SEINET14183557  Castilleja W. Short 1959-4-11 14 Butte US Hwy 40, 15 miles E of Oroville. 549 Comment
  CHSC103964  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico. 277 Comment
  CHSC115356  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19962 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  JEPS124226  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  CHSC44355  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 a Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  JEPS115589  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 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
  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
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  JEPS80696  Castilleja arachnoidea R. Banchero 1981-7-14 Butte about 5 air mi e Jonesville (Humbug Summit); , Jonesville Quad. 2057 Comment
  JEPS103418  Castilleja attenuata Lowell Ahart 2002-4-24 9530 Butte In a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC87197  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UC726755  Castilleja campestris subsp. campestris A. A. Heller 1940-4-20 Butte about 1 mi s Oroville Y Comment
  JEPS122211  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC1824  Castilleja lacera M. Roberson 1956-4-23 Butte SE of Paradise, along Skyway. 426 Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  CHSC31932  Castilleja miniata J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1043 Butte Immediately N of and adjacent to the summit of Humbolt Peak, northernmost portion of Butte Co. 2133 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
  JEPS46017  Castilleja miniata L. R. Heckard 1956-8-6 823 Butte w of Jonesville (along road, near Butte Creek) Comment
  CHSC81312  Castilleja tenuis J. Trizzino 2001-4-25 51 Butte Humbug Road, 6 mi north of Steel Bridge, west facing hillside. 914 Comment
  CDA34713  Catalpa speciosa L. Ahart, Wes Dempsey, Josephine Guardino, Susan Mason, Steve Green. 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico. Comment
  UCR231508  Ceanothus Anna M. Hurlbutt 2009-8-7 025 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CAS-BOT-BC48809  Ceanothus cuneatus Lowell Ahart 1980-3-26 2061 Butte Near Hurleton 600 Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CHSC36071  Ceanothus diversifolius R. A. Schlising; J. D. Jokerst 1982-6-6 4288 Butte Along Concow Road, n of Concow Reservoir, near Flea Mt. 1097 Comment
  CAS-BOT-BC50813  Ceanothus integerrimus Lewis S. Rose 1955-6-15 55099 Butte Paradise 518 Comment
  CHSC23697  Ceanothus integerrimus M. S. Taylor 1976-5-5 1107 Butte Abundant ca. 15 ft n of Hwy 70, at Jarbo Gap, ca. 15 mi ne of Oroville. Comment
  RSA755044  Ceanothus integerrimus L. Ahart 2009-5-15 15693 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  SACT002930  Ceanothus integerrimus Josephine Van Ess 1974-8-31 Butte Common shrub, some in flower, some in seed. Collected at end of ranch road at the stream. Comment
  UC449695  Ceanothus integerrimus W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek.) Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC51146  Ceanothus lemmonii John Thomas Howell 1955-6-15 30482 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  CAS-BOT-BC52000  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CAS-BOT-BC52005  Ceanothus prostratus Anna Head 1921-6-25 s.n. Butte ridge East of Lake Center Camp, Feather River Region Comment
  UC1071269  Ceanothus prostratus P. L. Johannsen 1936-7-16 925 Butte 1 3/4 mi ese Butte Mdws (Lassen National Forest); , Paynes Creek Quad. Comment
  CAS-BOT-BC52424  Ceanothus velutinus var. velutinus H. F. Copeland 1920-7-7 37 Butte Jonesville 1219 Comment
  CHSC6012  Cedrus deodara M. MacArthur 1968-6-19 252 Butte Lawn in front of CAC and next to NE end of Library bld., Chico State College. 60 Comment
  CHSC100470  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15425 Butte On the southeast side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  JEPS87515 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CHSC103998  Centaurea melitensis Lowell Ahart 2010-6-20 16835 Butte About 3/8 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 55 Comment
  CHSC107125  Centaurea melitensis L. P. Janeway 2011-6-7 10369 Butte Cascade Range Foothills. East side of Chico; north side of Humboldt Road 3.0 road km east of Bruce Road. 186 Comment
  CAS-BOT-BC284502  Centaurea solstitialis Sally Bianco 1995-11-9 1052 Butte NE edge of Concow Lake, 13199 Concow Road Oroville 670 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
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS117540  Centaurium venustum Lowell Ahart 2010-6-9 16781 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  SFV5834  Centaurium venustum M. L. Vincent 1968-6-5 766 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  UC175564  Centaurium venustum A. A. Heller 1913-6-4 10778 Butte n of Oroville (Olive Ranch); Table Mountain Comment
  SEINET10454836  Centaurium venustum subsp. abramsii Mary Susan Taylor 1975-6-25 Taylor 807 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC288532  Centromadia fitchii J. Clausen 1932-9-16 657 Butte 20 miles S of Chico, between Richvale and Nelson Comment
  CAS-BOT-BC271506  Centromadia parryi subsp. rudis M. S. Taylor; L. Ahart 1982-5-28 4345 Butte Gray Lodge Waterfowl Management Area, N side of Ruthrford Road, ca. 1/8 mi W of its jct with Pennington Road at the checking station, ca. 12 miles southwest of Gridley 21 Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  CAS-BOT-BC388175  Cerastium fontanum Lowell Ahart 1981-9-15 3160 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CHSC34180  Cerastium fontanum subsp. vulgare L. Ahart 1981-9-15 3160 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  JEPS117150  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 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
  RSA0118720  Cerastium glomeratum Lowell A. Ahart 2014-4-16 19363 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  CHSC35965  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, in slough at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CHSC26457  Cercis occidentalis P. Moyer 1972-3-11 120 Butte CSUC Campus. E side of Cafe bridge, n bank of Chico Ck. 60 Comment
  POM28570  Cercis occidentalis C. C. Bruce 1897-05 1815 Butte Little Chico. Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  HSC66093  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz Vernal Pool, 0.4 mi. SE of Jct. Pentz Rd. and Hwy. 99, about 10 mi. S of Chico 55 Comment
  JEPS120617  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. Comment
  JEPS121304  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC54866  Chamaesyce nutans Vernon H. Oswald; Lowell Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  CHSC37373  Chamaesyce ocellata R. A. Schlising 1981-9-20 4196 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CDA35258  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
  CHSC102252  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 16404 -A Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcutt, about 12 miles (air) south of Oroville. 30 Comment
  CHSC102401  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  JEPS115651  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC165954  Chamerion angustifolium E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC69441  Cheilanthes gracillima M. S. Taylor; L. Ahart; J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of N. Table Mt., ca. 8 mi. n. of Oroville. 373 Comment
  RSA712759  Cheilanthes gracillima L. P. Janeway 2005-5-29 8411 Butte Northern High Sierra Nevada, 0.2 kilometers of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  UC399640  Cheilanthes gracillima H. M. Hall July 1914 9806 Butte near Jonesville 1737 Comment
  CAS-BOT-BC460928  Chenopodium Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  CHSC109758  Chenopodium album Lowell Ahart 2012-10-20 18508 Butte On the south edge of the paved park road, south of Big Chico Creek, about 120 yards southwest of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 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
  SEINET10479091  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-29 Taylor 968 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  RSA724944  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CDA3074  Chenopodium missouriense J. T. Howell 1961-9-22 36788 Butte North Fork of Feather River northeast of Pulga. 0 Comment
  JEPS115101  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 60 Comment
  CHSC30760  Chimaphila umbellata M. S. Taylor 1978-9-9 1907 Butte Bull Run Rd., ca. 50 ft. w of the rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  JEPS93939  Chimaphila umbellata Vernon H. Oswald and Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi n of Four Trees-Coyote Gap Road Upper Wildcat Creek; USFS 25N95 to Upper Wildcat Creek 1463 Comment
  POM173376  Chimaphila umbellata subsp. occidentalis H. F. Copeland 1928-8-14 1002 Butte Neighborhood of Jonesville. Comment
  CHSC46429  Chlorogalum angustifolium Lowell Ahart 1989-5-23 6261 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC84158  Chondrilla juncea Lowell Ahart 2003-6-30 10331 Butte Near the water pipe where it comes out of the mountain, on the north side of the Ponderosa Reservoir, about 2 miles (air) north of Forbestown. 481 Comment
  CAS-BOT-BC252673  Chorizanthe membranacea David D. Keck 1933-5-30 2406 Butte 3.0 miles southwest of Richardson Springs Comment
  SEINET10970722  Chorizanthe polygonoides Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5392 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CAS-BOT-BC252834  Chorizanthe polygonoides var. polygonoides A. A. Heller 1939-4-26 15382 Butte Along the Neal Road just above the Spring House west of Paradise Comment
  SEINET10474166  Cichorium intybus Mary Susan Taylor 1975-6-25 Taylor 795 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC11784  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  CHSC20255  Cirsium occidentale var. venustum T. Lorenz 1972-4-23 2 Butte Collected adjacent to highway 32, ca. 7.6 mi from highway 99 overpass. Comment
  CHSC34023  Cirsium vulgare L. Ahart 1981-7-26 3010 Butte 1/2 mi sw of the Graylodge Waterfowl Mgmt Area HQ, ca. 12 mi sw of Gridley. 35 Comment
  POM180913  Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  CHSC81281  Clarkia arcuata J. Trizzino 2001-4-25 52 Butte Humbug Road, 6 mi north of Steel Bridge. 914 Comment
  UCD21834  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  SEINET10453146  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 Ahart 4658 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC93793  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC2481  Clarkia gracilis subsp. albicaulis W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. Comment
  CHSC62569  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson, Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road. Along the road. 451 Comment
  UCD104577  Clarkia mildrediae G. F. Hrusa; T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada. Plumas National Forest. Immed. S of Rogers Cow Camp on Highway 162. 1150 Comment
  UCD104575  Clarkia mildrediae L. D. Gottlieb 1987-8-22 8759 Butte On Rt. 70, 1.7 miles S of Arch Rock Tunnel. Comment
  CHSC39035  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 25 miles north-east of Oroville and 2 miles east of Milsap Bar on Middle Fork of the Feather River; at roadside. 1000 Comment
  UC1972926  Clarkia mildrediae subsp. lutescens Catherine Schnurrenberger 2011-7-8 Butte On Flea Mountain, off of Concow-Rim Road approx. 1 air mi N of Hwy 70 on and around the access road to the transmission line 944 Comment
  CAS-BOT-BC163354  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through steep mid-slope of North Fork Feather River canyon 649 Comment
  CHSC39037  Clarkia mosquinii Lowell Ahart 1983-6-26 4118 Butte About 15 miles ne of Oroville, about 2 miles se of intersection of the Oroville/Quincy Highway and Ponderosa Way; along Ponderosa Way. 500 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CAS-BOT-BC172528  Clarkia purpurea subsp. purpurea A. A. Heller 1914-5-11 11384 Butte Hills 8 miles north of Oroville Comment
  JEPS108567  Clarkia purpurea subsp. purpurea L. P. Janeway 2005-5-17 8393 Butte Sacramento Valley. 0.5 km west of Larkin Road, 1.7 km south of Hwy. 162, about 0.5 km northeast of Thermalito Afterbay 43 Comment
  CAS-BOT-BC163653  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  JEPS117277  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2010-5-14 16669 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CHSC1113  Clarkia rhomboidea M. Roberson 1956-6-4 Butte SW of Paradise, along Skyway. 426 Comment
  SD7341  Clarkia rhomboidea Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  UC725286  Clarkia rhomboidea A. A. Heller 1937-5-31 Butte Yankee Hill Jarper Pass Comment
  UCR133590  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Rocky crest of ridge between Willow and Colby Creeks 1677 Comment
  SEINET9116151  Claytonia lanceolata D. W. Taylor 2002-7-3 18220 Butte FR 22N27, ca 0.5 mile W from junction with FR 22N29 (ca 1 air mile NW of Little Grass Valley dam). 1707 Comment
  CHSC27920  Claytonia palustris M. S. Taylor 1978-7-19 1736 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC98377  Claytonia palustris Dean Wm. Taylor; Tom Engstrom 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road, growing in moist bed of stream draining the site ca. 150 ft downslope to the SE of the road. 1524 Comment
  POM196082  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  CHSC33587  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-28 3562 Butte Shady rd embankment, e side of rd 23N28.2 (Big Bar Rd), ca. 0.1 mi n of its jct with 22N84, ca. 1.4 mi w of Chino Creek, ca. 23 air mi nw of Oroville. 944 Comment
  CHSC109117  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2012-2-22 17743 Butte On a large rock, about 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC93649  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-5-8 12596 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  SEINET10572730  Claytonia perfoliata subsp. perfoliata Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5379 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  CAS-BOT-BC443702  Claytonia rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CHSC33572  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-27 3557 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  JEPS121920  Claytonia rubra subsp. rubra Lowell Ahart 2014-7-10 19633 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET12089666  Clematis lasiantha Unknown 1977-1 18 Butte 100 ft S of Cohasset Rd., 10.5 mi WNW of Chico, 13 mi from CSUC Comment
  CHSC28506  Clematis ligusticifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2250 Butte By bridge over creek, Jordan Hill Rd (Ponderosa Way on some maps), ca. .8 mi n of its jct with Concow Rd., ca. 5 mi e of Paradise. 426 Comment
  CHSC42810  Clintonia uniflora L. P. Janeway 1987-6-13 2221 Butte Along Concow Rd just SW of rd to Five Corners and Stirling City. 1188 Comment
  CHSC66292  Clintonia uniflora Lowell Ahart 1996-6-5 7680 Butte East of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  UC103369  Collinsia parviflora Mrs. R. M. Austin May 1896 258 Butte Little Chico Creek Comment
  SEINET10548267  Collinsia parviflora Mary Susan Taylor 1980-4-16 Taylor 2482 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
  SFV10460  Collinsia parviflora M. L. Vincent 1964-4-11 562 Butte Cherokee Road beside the Campbell Ranch. 0.5 miles south of Cherokee. Comment
  CHSC38686  Collinsia sparsiflora var. collina Vernon Oswald 1983-3-19 193 Butte Upper Bidwell Park, Chico, 300 ft. n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  JEPS6659  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15053 Butte Near oak trees on Highway #24 near the summit above the junction with the Yankee Hill road. Arid Transition Zone. 609 Comment
  CHSC44726  Collinsia tinctoria R. Banchero 1980-6-19 253 Butte Along Concow Rd 1.1 mi N of its jct with Hwy 70, 0.1 mi N of the town of Concow. 554 Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  JEPS115671  Collinsia tinctoria Lowell Ahart 2009-5-30 15785 Butte On dry soil, around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC29219  Collomia heterophylla M. S. Taylor; J. D. Jokerst 1980-4-27 2550 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC45347  Collomia heterophylla Vernon Oswald 1987-3-31 2304 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. On a sand bar along the creek. 85 Comment
  CHSC97354  Collomia heterophylla Paul Maslin 2005-4-15 53 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609552E 4409353N. 243 Comment
  CHSC34217  Conium maculatum M. S. Taylor 1981-5-28 3806 Butte Along River Rd, near bridge over slough, ca. 5 mi sw of Chico. 36 Comment
  CAS-BOT-BC286059  Conyza canadensis Ira L. Wiggins 1928-9-9 3348 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CAS-BOT-BC286060  Conyza canadensis John Thomas Howell 1961-9-22 36732 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC286068  Conyza canadensis Lowell Ahart 1982-10-6 3848 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CAS-BOT-BC288956  Conyza floribunda John Thomas Howell 1959-9-20 34632 Butte Eastern outskirts of Oroville 60 Comment
  CHSC30738  Corallorhiza maculata M. S. Taylor; R. A. Schlising 1980-7-6 3080 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  JEPS46150  Corallorhiza maculata Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  CHSC62587  Cordylanthus tenuis subsp. tenuis B. Castro 1993-8-5 494 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, abundant along road edges of sharp curve in USFS Rd 23N28. 1133 Comment
  RSA537685  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte About 1.5 miles west of Butte Meadows at Thatcher Ridge near junction. 1280 Comment
  CHSC36967  Coreopsis grandiflora M. S. Taylor 1982-8-16 4994 Butte S end of Stirling City on both sides of the Skyway. 1036 Comment
  RSA755441  Cornus glabrata L. Ahart 2009-5-23 15733 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
  CHSC3865  Cornus kousa Gary Dutton 1966-4-13 211 Butte CSC; East side of Shasta Dining Hall along Chico Creek and foot bridge. Comment
  CAS-BOT-BC211984  Cornus nuttallii Saichi Kawahara 1968-5-5 399 Butte Humboldt Road, 1 mile west of Bull Road 1432 Comment
  CHSC449  Cornus nuttallii R. M. Staley 1953-7-18 Butte Lovelock. Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  RSA28808  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  SEINET5544807  Cornus nuttallii H. S. Gentry, S. Koch 1962-1 19764 Butte 2-3 mi. NW of Cohasset. 1066 Comment
  CHSC92592  Cornus sessilis L. P. Janeway 2005-5-17 8392 Butte Northern High Sierra Nevada. Plumas National Forest; along unnamed creek 0.5 km west of Cedar Creek, 1.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  UC302260  Corydalis caseana subsp. caseana Marcus E. Jones, A. M. 1897-7-9 Butte 13 mi. down rd. from Prattville to Chico 1524 Comment
  UCD40400  Corylus cornuta subsp. californica Rodney Gale Myatt 1971-6-13 722 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC29110  Corylus cornuta var. californica M. S. Taylor 1980-4-27 2555 Butte Along Middle Butte Creek off of Little Butte Creek. Ca. 1 1/2 mi se of Nimshew. 609 Comment
  CDA34146  Cotula australis L. Ahart 2009-3-9 15497 Butte Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, and about 12 miles south of Oroville. Comment
  CHSC50643  Cotula australis Lowell Ahart 1990-5-28 6498 Butte Along the edges of Palm Avenue, near the old bridge, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC117434  Cotula coronopifolia Lowell Ahart 2016-5-31 20903 Butte On the sides 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
  CAS-BOT-BC291331  Cotula coronopifolia Lowell Ahart 1980-4-9 2220 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS117405  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET10449709  Crassula erecta Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4853 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC46739  Crassula saginoides Lowell Ahart 1974-4-11 393 Butte Peter Ahart Ranch, about 2 miles north and 1 1/2 mile north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46743  Crassula tillaea Lowell Ahart 1974-4-11 382 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CAS-BOT-BC290528  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  SD8855  Crocidium multicaule R. M. Austin 1883-1 Butte Comment
  SEINET9767044 Image available Croton setiger Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC38654  Crucianella angustifolia Vernon Oswald 1983-6-2 599 Butte Upper Bidwell Park, Chico, along Yahi Trail W of Brown's Hole. 195 Comment
  CHSC36551  Crypsis schoenoides L. Ahart 1982-7-10 3672 Butte On the bottom of a duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC83050  Crypsis schoenoides Lowell Ahart 2002-10-17 10000 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
  JEPS95949  Crypsis schoenoides Lowell Ahart 1999-8-13 8148 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
  UCD59826  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  SEINET11688336  Crypsis schoenoides Unknown 1984-1 4788 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  UC78399  Cryptantha affinis Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CHSC67753  Cryptantha intermedia James D. Jokerst; M. S. Taylor 1980-4-19 611 Butte Humbug Rd. 7.4 mi N of Centerville Cemetery. Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  UC726305  Cryptantha muricata A. A. Heller 1938-5-28 15121 Butte 23 mi from Oroville (on the Feather Highway) Comment
  CHSC39538  Cryptantha simulans Lowell Ahart 1983-5-28 4020 Butte On both sides of the trail to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  UC857292  Cryptantha torreyana A. A. Heller 1915-5-28 11912 Butte near Cohasset (Sierra foothills); Sierra Comment
  RSA325181  Cupressus macnabiana M. S. Taylor, V. Oswald 1984-4-4 5395 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  JEPS121891  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  JEPS118062  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  UC478481  Cuscuta suksdorfii E. B. Copeland 1931-7-17 676 Butte near head of South Willow Creek; Jonesville 1700 Comment
  CHSC113125  Cynodon dactylon Lowell Ahart 2013-11-18 19284 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  RSA754876  Cynodon dactylon L. Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CHSC2486  Cynoglossum grande W. Fitzwater 1958-4-5 Butte Near Forest Ranch. 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
  JEPS103526  Cynosurus echinatus Lowell Ahart 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  UC907516  Cyperus albomarginatus John E. Chattin and Carroll Ferrell 1946-10-15 Butte 8 mi. n.e. Butte City 30 Comment
  CHSC76850  Cyperus difformis L. P. Janeway 1999-6-26 6487 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC111174  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC41770  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 Butte 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. 36 Comment
  CHSC97763  Cyperus erythrorhizos Lowell Ahart 2007-11-3 14555 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC45115  Cyperus flavescens Vernon Oswald 1987-8-13 3215 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. 48 Comment
  UCR257984  Cyperus iria Whitney Brim-Deforest 2013-8-1 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, c. 1.74 miles west of Hwy 99 30 Comment
  CHSC110390  Cyperus niger Lowell Ahart 2012-9-28 18469 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC68395  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-4 1909 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  JEPS98603  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of the Pentz Magalia Road, ca 2 miles S of Paradise. 548 Comment
  UCR263570  Cyperus niger Lowell Ahart 2000-8-23 8662 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CAS-BOT-BC114081  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  CHSC38898  Cyperus squarrosus Vernon Oswald 1983-6-17 699 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 300 ft w of the parking area at Day Camp. 91 Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 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
  CHSC51283  Cyperus strigosus Lowell Ahart 1990-10-3 6614 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. 243 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC110841  Cyperus vegetus A. A. Heller 1939-8-26 15479 Butte River Road west of Chico, Lower Sonoran Life Zone Comment
  CAS-BOT-BC133764  Cypripedium fasciculatum Lowell Ahart 1982-9-13 3809 Butte Field redacted by CAS, contact the data manager for more information 1100 Comment
  CHSC2476  Cypripedium fasciculatum W. Fitzwater 1958-3-12 Butte Near Stirling City. ... Field redacted by CHSC, contact the data manager for more information 1463 Comment
  CHSC26840  Cystopteris fragilis M. S. Taylor 1978-6-24 1659 Butte On n side of Scotts John Rd, ca. 3 mi e of ets jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC109588  Dactylis glomerata Lowell Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CHSC30290  Dactylis glomerata M. S. Taylor 1980-5-27 2645 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CAS-BOT-BC445501  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 miles west of Oroville Comment
  UC574002  Danthonia californica H. S. Yates 1936-8-13 17549 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  JEPS115541  Darmera peltata Lowell Ahart 2009-5-15 15714 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  NY41067  Darmera peltata S. Bianco 1995-9-17 1027 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CHSC35967  Daucus pusillus M. S. Taylor 1982-5-21 4491 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over the Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  POM77818  Daucus pusillus C. C. Bruce 1898-06 2050 Butte By Chico Comment
  CHSC4033  Delphinium gracilentum Sadie Gualtieri 1967-3-6 Butte Collected: on Skyway to Paradise, 3 to 5 miles outside Chico; fields on S. side of hiway. Comment
  CHSC93081  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
  CHSC1445  Delphinium hesperium E. Scharsch 1931-4-1 Butte Magalia. 731 Comment
  CAS-BOT-BC121617  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4253 Butte E of Oroville, old road to Bucks Lake Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CHSC50055  Delphinium patens subsp. patens Lowell Ahart 1990-3-28 6429 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CHSC59804  Delphinium patens subsp. patens Diana Licky 1981-5-5 Butte Concow area. Comment
  SEINET3450728  Delphinium patens subsp. patens Unknown 2003-4-15 10100 Butte Oroville, Oroville, about 7 air miles north, about 1.25 miles northwest of the iron gate and fence, southwest of drainage entering Beatson Hollow, steep slopes of Beatson Hollow 280 Comment
  CAS-BOT-BC121618  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4252 Butte E of Bidwell Bar Bridge Comment
  UC1080381  Delphinium patens subsp. patens E. K. Balls 1957-5-23 22529 Butte 3 mi se turn-off (Hwy 32 to De Sabla) 670 Comment
  CAS-BOT-BC17102  Delphinium uliginosum Mrs. G Earle Kelly 1925-6-20 s.n. Butte Butte Meadows Comment
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Jul 13 2018
  CAS-BOT-BC17015  Delphinium variegatum Lowell Ahart 1980-5-25 2320 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC65507  Delphinium variegatum subsp. variegatum Ron P. Garcia 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CHSC96558  Delphinium variegatum subsp. variegatum L. P. Janeway 2006-4-30 8570 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  CAS-BOT-BC82879  Dendromecon rigida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC101116  Dendromecon rigida Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC9126  Deschampsia cespitosa Willis Ball 1970-3-10 69 Butte Along the Skyway to Paradise, about 5 miles after the turn off to Paradise from hwy 99E. On the right side of the road. 182 Comment
  SEINET176079 Image available Deschampsia cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville border of the 'Lily Pond' a permanent pool warm in summer 1750 Comment
  CAS-BOT-BC192653  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  CHSC47613  Deschampsia danthonioides Lowell Ahart 1983-5-12 3977 Butte On the bottom and sides of vernal pools, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  CAS-BOT-BC201738  Deschampsia elongata Lowell Ahart 1980-9-10 2639 Butte 5 miles east of Milsap Bar 1200 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
  CHSC79753  Dicentra formosa Leanna Brown 1999-4-27 70 Butte Eastern shore of Paradise Lake. 753 Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CHSC19651  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC402391  Dicentra formosa subsp. formosa Marion Ownbey 1964-4-21 s.n. Butte Collected by the banks of Heinz Creek, S side of the canyon of N. fork of the Feather River, ca. 1/2 mi. E of Poe Power Dam Comment
  CAS-BOT-BC500064  Dichelostemma capitatum A. A. Heller 1915-3-24 11778 Butte Low grassy hills 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodacatheon and Athysanus, the first plants in bloom.. 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
  CHSC77454  Dichelostemma capitatum subsp. capitatum Laura Bogni 1997-3-25 9 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  RSA333578  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-22 29 Butte On Pentz Road, 1.1 mile W of Williams Road intersection. Comment
  CHSC2070  Dichelostemma congestum V. Holt 1935-5-26 Butte Humboldt road 76 Comment
  CHSC38767  Dichelostemma congestum Vernon Oswald 1983-5-23 543 Butte Upper Bidwell Park, Chico, near Yahi Trail of Brown's Hole. 207 Comment
  CHSC33141  Dichelostemma multiflorum J. D. Jokerst 1981-5-14 1315 Butte Top of North Table Mountain at it's W edge, ca. 1/3 mi N of Cherokee Rd. 365 Comment
  SD111968  Dichelostemma multiflorum Barbara Ertter, Lowell Ahart, Jeffrey Strachan 1980-5-6 3271 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville. Dried vernal pool previously plowed as grainfield, now reverted, very rocky. 29 Comment
  CAS-BOT-BC501090  Dichelostemma multiflorum A. A. Heller 1915-5-28 11902 Butte Near Cohasset, Sierra foothills Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  SEINET12053816  Dichelostemma multiflorum I. Klockenbaum 5 s.n. Butte no further locality Comment
  CHSC77498  Dichelostemma volubile Anna Pinsky 1997-4-1 8 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, 80 ft. above Big Chico Creek. Comment
  CAS-BOT-BC502520  Dichelostemma volubile Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  SEINET12046112  Dichelostemma volubile Unknown 1978-1 29 Butte on N side of Honey Run Rd, ca 5.5 mi E of Chico 76 Comment
  CHSC48304  Dichondra donelliana Vernon Oswald 1985-3-17 1687 Butte Peter Ahart Ranch, ca. 1.5 mi n of Honcut. Near N. Honcut Creek. 45 Comment
  CHSC53949  Dichondra donelliana Vernon H. Oswald 1991-4-9 4488 Butte Dan Beebe Trail on the south side of the Thermalito Diversion Pool, Lake Oroville State Recreation Area, west of the spillway. Along the trail through Quercus wislizenii woodland on the east side of the streamlet draining into Glen Pond, ca. 0.1 mi west of the 4.0 mile post. 79 Comment
  CHSC38808  Digitaria ischaemum Vernon Oswald 1983-9-17 1040 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  JEPS95157  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  RSA703067  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte in a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC33585  Diplacus grandiflorus M. S. Taylor 1981-5-5 3599 Butte E side of Lumpkin-La Porte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  SEINET10570111  Diplacus grandiflorus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4230 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC44761  Diplacus kelloggii R. Banchero 1980-5-12 150 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  CAS-BOT-BC154037  Diplacus torreyi A. A. Heller 1928-6-20 14664 Butte At Butte Meadows Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC38708  Diplacus torreyi Vernon Oswald 1983-6-11 666 Butte Upper Bidwell Park, in Lindo Channel near the diversion weir. 79 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC154166  Diplacus tricolor Lowell Ahart 1982-5-12 3433 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut 50 Comment
  CHSC88054  Disporum hookeri R. D. Fischer; Jenny Marr 2004-5-16 180 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Located at n. end, e. side where rd. crosses mdw., near mdw. 1292 Comment
  SEINET3450774  Distichlis spicata Lowell Ahart, Josephine Guardino, Steve Green 2003-5-27 10223 Butte Chico, Chico, about 3.5 miles east of Manzanita Avenue, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park 120 Comment
  CHSC27188  Distylium P. Moyer 1971-10-1 16 Butte CSUC campus. Bidwell mansion front lawn. 60 Comment
  CHSC106282  Dittrichia graveolens L. P. Janeway 2010-11-17 10220 Butte Sacramento Valley. Oroville; in gravel parking area at east sie of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  CHSC14051  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Ca. 4 mi se on Cherokee Rd, from Hwy 70, ca. 500 ft w of road near oaks in cow pasture. Comment
  CHSC67291  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1953 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Adjacent to #1952. Comment
  UCD118955  Dodecatheon hendersonii M. R. Nichols 1975-4-23 5 Butte 5.6 mi e of Chico on Skyway from Hwy 99. 304 Comment
  UCD118957  Dodecatheon hendersonii R. J. Radzavage 1979-4-18 9 Butte E side of Table Mountain Rd. Approx. 3 mi. s of Cherokee. 320 Comment
  CDA17505  Dopatrium junceum G. D. Barbe 1984-8-25 4190 Butte Sacramento Valley; Biggs Rice Experiment Station. 0 Comment
  CHSC58896  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte Growing on the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS87194  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  UCD55099  Downingia cuspidata Rachel Foster 1968-4-13 68- 212 Butte North Table Mountain. 396 Comment
  SEINET12326977  Downingia cuspidata R. T. Retuta 1978-1 17 Butte 5 ft. E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico, Sect. 10, T23N, R1W 62 Comment
  UC625530  Downingia cuspidata Frank W. Gould 1938-4-23 318 Butte a few mi n Gridley Comment
  CHSC2377  Downingia ornatissima var. ornatissima R. Carter 1965-5-13 198 Butte Exact location unknown, but found somewhere along the Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC51053  Draba verna Pauleen Broyles 1987-3-24 998 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. Comment
  CHSC44040  Draperia systyla L. P. Janeway 1987-5-10 2052 Butte Near bridge over West Branch Feather River, ca 6 mi from Stirling City. On steep gravelly slope. 754 Comment
  UCD99547  Drosera rotundifolia Barry Rice 2005-7-3 BR 050702 Butte in meadow draining into Snag Lake, on the southeast side of Summit Road. 1770 Comment
  CAS-BOT-BC401556  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville Comment
  CAS-BOT-BC159641  Drymocallis glandulosa var. glandulosa Lowell Ahart 1985-5-15 774 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC50014  Dryopteris arguta Lowell Ahart 1990-3-19 6417 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC3524  Dudleya cymosa John Francis 1966-4-23 129 Butte Table Mt. Comment
  CAS-BOT-BC428076  Dudleya cymosa subsp. cymosa Lewis S. Rose 1945-5-12 45017 Butte Richardson Springs 304 Comment
  CHSC112198  Dysphania botrys Lowell Ahart 2013-4-20 18561 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC116129  Dysphania botrys Lowell Ahart 2015-11-7 20617 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC23541  Dysphania botrys M. S. Taylor 1975-10-29 968 Butte Along Butte Creek, ca. 250 yds s of Humbug Rd and ca. 2 mi e of junc of the Skyway and Humbug Rd, ca. 8 mi e of Chico, Comment
  CHSC62447  Dysphania botrys L. P. Janeway 1993-9-3 4581 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CHSC99647  Echinochloa colona H. Koeth 2007-5-5 Butte End of Santa Clara Ave. off Rose Ave., Chico. UTM 10 609663E 4406233N. 57 Comment
  SEINET10564198  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte 6 mi S of Chico on W side of Goodspeed-Watt Road. With Jim Jokerst. Edge of ricefield. 34 Comment
  SEINET10934803  Echinochloa crus-galli Mary Susan Taylor 1978-9-8 Taylor 1886 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC208573  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 c Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC445586  Echinodorus berteroi Lowell Ahart 1980-11-9 2692 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC76270  Eclipta prostrata Lowell Ahart 1999-9-21 8268 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
  CHSC113454  Elatine ambigua Lowell Ahart 2014-8-8 19696 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC115359  Elatine americana Lowell Ahart 2015-3-26 19966 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  UCD49578  Eleocharis atropurpurea John M. Tucker 1953-8-28 2678 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  POM196137  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  UC398895  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville 1500 Comment
  CAS-BOT-BC113370  Eleocharis engelmannii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC78193  Eleocharis engelmannii Lowell Ahart 2000-5-18 8370 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  UC1594626  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte 2 mi W of Biggs (on N side of Biggs Princeton Road) 30 Comment
  CAS-BOT-BC112786  Eleocharis macrostachya John Thomas Howell 1959-9-20 34659 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC68432  Eleocharis macrostachya L. P. Janeway 1986-10-19 1928 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  SEINET13710556  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8389 Butte 12 Air Mi. SE of Oroville (T17N, R4E, sec 11, SE 1/4) 130 Ft. 40 Comment
  RSA692209  Eleocharis quinqueflora L. Ahart 2003-5-28 10231 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville 272 Comment
  CDA38984  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte Along the west margin of a large pond, on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 0 Comment
  CHSC105955  Eleusine indica Lowell Ahart 2010-9-24 17240 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  CHSC38815  Eleusine indica Vernon Oswald 1983-8-19 1015 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 300 ft upstream from the flood-control gates. Near a streamlet. 79 Comment
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  JEPS106243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC101296  Elymus caput-medusae Lowell Ahart 2009-4-17 15551 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  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
  UCD61403  Elymus elymoides E. B. Copeland 1929-7-24 Butte Jonesville. 1575 Comment
  SEINET10564666  Elymus elymoides Edwin B. Copel 1929-7-24 Copeland 340 Butte Jonesville. In dry, open, yellow-pine woods. 1575 Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  CHSC38817  Elymus glaucus subsp. glaucus Vernon Oswald 1983-5-15 498 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC42920  Elymus glaucus subsp. jepsonii Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CAS-BOT-BC234109  Elymus multisetus John Thomas Howell 1962-6-15 37529 Butte Magalia, Sierra Nevada 731 Comment
  CDA13316  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada; Dry, sunny, sandy bank on USFS N60 approx. immed. E of bridge over Marble Creek. Steep, dry rocky area, slopes near vertical. Perennial, uncommon here. Comment
  CHSC28794  Enemion occidentale J. D. Jokerst 1979-3-31 183 Butte Just s of Little Chico Cr. Comment
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC117412  Epilobium campestre B. Castro 2008-7-15 1757 Butte Sacramento Valley. 0.4 mi W of Hwy 99 and 2.5 mi E of Richvale, ca 300 ft S of Richvale Hwy. 34 Comment
  CHSC12078  Epilobium canum subsp. latifolium R. N. Bowman 1971-6-11 57 Butte Found on cliffs overlooking Big Chico Creek, Fern Banks, Bidwell Park, Chico. 64 Comment
  CHSC28539  Epilobium canum subsp. latifolium M. S. Taylor; J. D. Jokerst 1979-10-13 2249 Butte N side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC42760  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 289 Comment
  POM305569  Epilobium canum subsp. latifolium Henry J. Ramsey 1939-10-15 851 Butte Feather River Hwy. Comment
  JEPS88582  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald and Lowell Ahart 1996-7-22 8078 Butte US Fish & Wildlife Service parcel betw 7 Mile Lane and Sacramento R. (edge of farm rd. crossing branch of Angel Slough w of Refuge HQ's at s.e. corner of Tract 1, Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  CHSC58931  Epilobium ciliatum subsp. glandulosum Lowell Ahart 1992-7-26 6853 Butte In a meadow along a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  RSA0118758  Epilobium ciliatum subsp. glandulosum Lowell A. Ahart 2014-7-13 19653 Butte East part of a large wet meadow, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC33282  Epilobium foliosum R. A. Schlising 1981-6-20 4099 Butte NE part of county, E of Stirling City and Inskip; E of Jones Meadow. 1767 Comment
  RSA795884  Epilobium foliosum L. Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 miles northwest of the West Branch Bridge across Lake Oroville. 307 Comment
  UC1601414  Epilobium lactiflorum H. F. Copeland 1932-8-22 Butte ridge se crest of Butte Creek (near springs); Lassen National Forest, Vicinity of Jonesville Comment
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  CHSC62572  Epilobium minutum L. P. Janeway 1993-5-2 4338 Butte South of Serpentine Point and above Hwy 70. Narrow ridge. 518 Comment
  RSA31269  Epilobium minutum C. R. Quick 1941-6-7 41 -27 Butte Big Bar Mts towards Coyote Gap. Comment
  JEPS124036  Epilobium torreyi Lowell Ahart 2015-7-4 20268 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  CHSC109673  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  JEPS115378  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA754451  Epipactis gigantea Lowell A. Ahart 2009-6-3 15833 Butte On E side of Big Chico Creek, SW of the meadow, about 30 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 209 Comment
  CAS-BOT-BC57992  Equisetum arvense John Thomas Howell 1961-9-22 36717 Butte Bank of Feather River, Oroville. 53 Comment
  CHSC66067  Equisetum arvense Vernon H. Oswald 1996-5-22 7618 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  CAS-BOT-BC57854  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC109682  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, atTable 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  SEINET10530172  Equisetum hyemale subsp. affine Mary Susan Taylor 1975-10-4 Taylor 965 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  SEINET10530173  Equisetum hyemale subsp. affine Mary Susan Taylor 1979-3-19 Taylor 1933 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC57255  Equisetum laevigatum E. B. Copeland 1930-6-24 403 Butte Jonesville 1500 Comment
  CHSC51840  Equisetum laevigatum Terril Wolt 1970-3-10 8 Butte Ca 500 ft W of public boat ramp along River Rd, 8 mi W of Chico. Comment
  CHSC97293  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC110982  Eragrostis curvula Lowell Ahart 2012-7-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. 162 Comment
  CHSC75983  Eragrostis hypnoides Lowell Ahart; Vernon H. Oswald 1999-8-13 8151 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
  CHSC94985  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-10-8 13434 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. 609 Comment
  UCD169455  Eragrostis pectinacea var. pectinacea Lowell Ahart 2004-9-14 11402 Butte East part of Palermo, on the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road. 57 Comment
  SEINET11688373  Eragrostis pilosa Unknown 1985-1 5202 Butte end of Nelson Bar Road, about 1 mi S of Kunkle Reservoir, about 3 mi S of Paradise 302 Comment
  CAS-BOT-BC168362  Eremogone ferrisiae Lowell Ahart 1980-5-29 2362 Butte 2 1/2 miles north-east of Mountain House 1100 Comment
  CHSC61630  Ericameria bloomeri Lowell Ahart 1993-9-8 7172 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  UC1609016  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  CHSC25464  Ericameria nauseosa var. speciosa Marc Hayes; Warner 1977-9-11 93 Butte Near the top of Humboldt Peak, near Butte-Tehama County line. 2133 Comment
  CHSC41877  Ericameria nauseosa var. speciosa Lowell Ahart 1986-10-16 5400 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC41875  Erigeron canadensis Lowell Ahart 1986-10-16 5407 Butte Near the Enterprise Launch Area parking lot, near Lake Oroville, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville. 289 Comment
  CAS-BOT-BC296823  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  CHSC54174  Erigeron foliosus var. hartwegii Vernon H. Oswald; Lowell Ahart 1991-5-31 4637 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion pool, at the drainage on the northeast side of Sycamore Hill. 76 Comment
  CHSC33714  Erigeron inornatus var. inornatus J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1338 Butte Road to Milsap Bar on the Middle Fork of the Feather River 1.7 mi below it's junction with the road to Big Bald Rock. Alongside road. Comment
  CHSC43603  Erigeron inornatus var. inornatus Vernon Oswald 1983-7-6 813 Butte On Humboldt Rd. (to Butte Meadows) 0.6 mi e of its jct. with Calif. Hwy. 32. 1249 Comment
  CAS-BOT-BC295952  Erigeron philadelphicus Lowell Ahart 1985-7-24 5155 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 350 Comment
  SEINET10938057  Erigeron strigosus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4218 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  RSA0037008  Eriochloa acuminata var. acuminata Lowell A. Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC30810  Eriodictyon californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2532 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC679  Eriodictyon californicum A. Goekler 1928-4-25 Butte Bidwell Park 76 Comment
  RSA769683  Eriodictyon californicum L. Ahart 2009-4-22 15591 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CAS-BOT-BC259404  Eriogonum luteolum Harry A. George 1971-11-5 s.n. Butte Feather River, Oroville Barrow Area nr. Vance Avenue between Biggs & Oroville 40 Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  CHSC44045  Eriogonum marifolium var. marifolium L. P. Janeway 1987-7-5 2458 Butte 2.5 mi north of Jones Mdw along rd to Philbrook Reservoir. 1920 Comment
  SEINET10479531  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1975-9-19 Taylor 916 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC269853  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC33983  Eriogonum nudum var. pubiflorum S. Posner 1972-10-24 Butte Between dredger tailings, 150 yds. south of Humbug Rd., 3 miles from Butte Creek Rock Co. Chico. Comment
  CHSC38610  Eriogonum nudum var. pubiflorum Vernon Oswald 1982-11-6 8 Butte Bidwell Park, Chico. Beside Yahi Trail ca. 800 ft e of Salmon Hole. 158 Comment
  CHSC95160  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. 60 Comment
  OBI69159  Eriogonum roseum Kari Fisher 2000-10-7 9 Butte Lindo Channel, 100 ft from E First St 82 Comment
  CHSC69454  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7893 Butte On the west side of Concow Road, about 2 miles northeast of Concow Reservoir. 701 Comment
  CHSC94921  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of North Fork Feather River along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentine outcrop road cut bank; southeast-facing. 579 Comment
  JEPS94932  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-8-19 7870 Butte about 8 air mi ne of Feather Falls (on s side of Lumpkin Ridge Road, about 1 1/2 mi e of Camp 18,); s side of Lumpkin Ridge Road 1280 Comment
  UC912724  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte summmit above Jonesville 2133 Comment
  SEINET11924843  Eriogonum umbellatum var. speciosum Unknown 1981-1 2929 Butte along the edge of dirt road 1/2 mi W of the Forbestown Reservoir, NE of Forbestown 701 Comment
  CHSC39090  Eriogonum ursinum var. ursinum R. A. Schlising 1980-5-12 3587 a Butte About 2 miles s of Pulga along Highway 70; serpentine outcrop above highway. 609 Comment
  CHSC107454  Eriogonum vimineum Matt Simenc 2011-7-2 21 Butte Northern Sierra Nevada Foothills. 300 ft NW of intersection of Montgomery St. and Downer St. in Oroville. Between upper and lower parking lot near the Feather River, at top of slope in gravelly soil. 58 Comment
  CAS-BOT-BC262343  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS103369  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the N side of North Honcut Creek, Peter Ahart Ranch, ca 1 1/4 miles N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 42 Comment
  UCR190825  Eriophyllum lanatum 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
  UC1577644  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  UC201314  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC308164  Eriophyllum lanatum var. grandiflorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC100985  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
  CHSC101331  Erodium cicutarium Lowell Ahart 2009-4-22 15579 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
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  CHSC3907  Erodium moschatum J. Wheler 1967-5-20 30 Butte Along west side of house at 248 Serviss St. Durham. Comment
  CHSC29285  Erythranthe arvensis R. A. Schlising 1980-4-14 3563 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC62162  Erythranthe glaucescens B. Castro 1987-5-7 63 Butte Ca. 2.5 air mi NE of Forest Ranch, downhill from Garland Road, ca 0.6 mi S of its jcn with Ponderosa Way, ca 0.6 mi down the Butte Creek Trail. 609 Comment
  CHSC7109  Erythranthe glaucescens James M. Watson 1969-4-4 8 Butte 4.3 mi e of upper Bidwell Park entrance 50 yds. n of road. 213 Comment
  CHSC40891  Erythranthe guttata Lowell Ahart 1985-6-17 5056 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC44742  Erythranthe guttata R. Banchero 1980-4-9 100 Butte Top of Table Mountain, ca 0.3 mi W of Cherokee Rd. 384 Comment
  CHSC64222  Erythranthe guttata S. C. Morey 1983-8-1 653 Butte Chico meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  CHSC65903  Erythranthe guttata Vernon H. Oswald 1996-4-20 7399 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  CHSC3988  Erythranthe microphylla E. P. Parreno 1967-3-30 Butte 20 yards South of Horseshoe Lake. Comment
  CHSC48999  Erythranthe microphylla Vernon Oswald 1984-3-26 1111 Butte Hamilton-Nord-Cana Hwy, 0.5 mi n of Bennett Rd. 48 Comment
  SD50989  Erythranthe moschata Darley F. Howe 1960-9-20 Butte North Fork of the feather River, 32 miles from Oroville, by stream 518 Comment
  SD7106  Erythranthe moschata Austin 1882-6-1 Butte Butte Co., Calif. 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
  SEINET10469661  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3551 Butte T23N R4E nw sec 29, Paradise SE quad. Serpentine scrub, W side and downslope from spur rd to Old Utah Mine, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi NE of Magalia, on N side of ridge. 2800 ft. 853 Comment
  SEINET10834239  Erythronium grandiflorum var. giganteum R. M. Austin Austin 5 Butte Butte Creek Comment
  CHSC88662  Erythronium multiscapideum Linnea Hanson 1983-4-6 178 Butte Plumas National Forest. East side of West Branch of Feather River. 1005 Comment
  CAS-BOT-BC504539  Erythronium multiscapideum M. S. Taylor 1981-3-18 3422 Butte Around and w of bridge crossing West Branch of Feather River on Ponderosa Way (Jordan Hill Rd), both banks 579 Comment
  HSC72760  Erythronium multiscapideum M. S. Taylor, D. V. Hemphill 1981-3-18 3422 Butte Near and W of bridge crossing W Branch of Feather River on Ponderosa Way 488 Comment
  CHSC27786  Eschscholzia caespitosa Rene T. Retuta 1978-4-4 2 Butte .50 miles se of Cherokee Rd., ca. 5 miles n of Oroville, North Table Mountain. 396 Comment
  CAS-BOT-BC402969  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC1201  Eschscholzia californica P. Delaplane 1965-3-27 16 Butte In field on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  UC175321  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC92559  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA0010838  Eucalyptus camaldulensis L. Ahart 2009-6-12 15843 Butte East side of the deer pen, about 50 yards north of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC47044  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. At roadside spring. 1158 Comment
  RSA0047086  Euonymus occidentalis L. P. Janeway 2006-8-8 8831 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 miles N of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CHSC11090  Euphorbia crenulata Lowell Ahart 1969-5-20 Butte Near Centerville, 10 miles N.E. of Chico. 457 Comment
  POM85677  Euphorbia crenulata C. C. Bruce 1897-04 2091 Butte Cherokee grade. Comment
  UCD142580  Euphorbia maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi. W of Chico. 40 Comment
  CAS-BOT-BC202422  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte About 3 miles east of Chico Comment
  JEPS122247  Euphorbia ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC101280  Euphorbia peplus Lowell Ahart 2009-4-3 15532 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC51352  Eurybia integrifolia Vernon Oswald 1990-7-28 4403 Butte Butte Creek Trail, ca. 2.2 mi (air) east of Forest Ranch. 533 Comment
  SEINET8687816 Image available Eurybia radulina K. Stiles 1907-1 150 Butte Brush Creek Comment
  CHSC37087  Euthamia occidentalis L. Ahart; M. S. Taylor 1982-10-11 3860 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  JEPS116069  Festuca arundinacea Lowell Ahart 2009-5-30 15797 Butte On dry soil, along a small stream, meadow, about 20 yards south of the fence and about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CHSC96836  Festuca californica Lowell Ahart 2007-5-29 13939 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC96752  Festuca elmeri Lowell Ahart 2007-7-15 14306 Butte Road bank, along the east side of Encina Grande Road (Bloomer Hill Road), about 200 yards southeast of the home, about 3/8 mile (air) southwest of Bloomer Hill. 742 Comment
  SEINET10909003  Festuca elmeri Vernon H. Oswald, Lowell Ahart 1990-6-27 Oswald 4325 Butte T22N R6E SW/S23. Yellow Pine Forest. Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro- Quincy Hwy, ca 0.5 mi (air) northeast of Junction House (site). On a rocky cut-bank in mixed coniferous forest. 1109 Comment
  CDA42857  Festuca myuros L. Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CHSC74163  Festuca occidentalis B. Castro; E. Hubert 1996-7-18 682 Butte Ca 4.5 air mi NW of town of Brush Creek, ca 1.5 air mi W of French Creek, on S side of USFS Rd 22N31 and just E of Rd 22N34Y. In clearcut area on either side of tributary to Bidwell Creek. 865 Comment
  SEINET10831660  Festuca occidentalis A. Arthur Heller 1913-6-7 Heller 10791 Butte Near Stirling. 1036 Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 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
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  CHSC42109  Foeniculum vulgare Lowell Ahart 1986-10-16 5405 Butte Along Pondrosa Way, about 3/4 mile south-west of the Ponderosa Dam, about 3 1/4 miles north-west of Forbestown. 396 Comment
  CHSC34215  Fragaria vesca M. S. Taylor 1981-4-28 3571 Butte N side of 23N28.2, at jct of Chico Creek, ca. 4 mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CAS-BOT-BC62937  Frangula californica subsp. tomentella Lewis S. Rose 1945-5-12 45048 Butte Richardson Springs. 304 Comment
  CAS-BOT-BC62942  Frangula californica subsp. tomentella Vesta Holt 1932-6-1 s.n. Butte Near Chico. Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  UCD121432  Frasera albicaulis var. nitida L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC46117  Fraxinus dipetala L. P. Janeway; B. Castro 1989-4-12 3216 Butte Ridge overlooking Little Chico Cr; along the old hwy (hwy 32) near Crown Pt. Dr. 449 Comment
  CAS-BOT-BC223473  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Chico, on Big Chico Creek 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
  CHSC86423  Fritillaria affinis R. D. Fischer; Paul Maslin 2004-2-7 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609847E 4408885N. 381 Comment
  CAS-BOT-BC136069  Fritillaria affinis Flower Show 1929-4-1 s.n. Butte Flower show Comment
  CHSC4173  Fritillaria eastwoodiae D. B. Joley 1967-4-10 19 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  CHSC9265  Fritillaria eastwoodiae D. C. Burns 1971-4-4 122 Butte Growing on n side of highway 70, ca. 10 yds. Up a steep bank, ca. 20 mi n of Oroville on highway 70, (30 yds. E of Jarbo Gap Cafe). 710 Comment
  SEINET10469532  Fritillaria phaeanthera Mary Susan Taylor 1976-3-16 Taylor 1028 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CAS-BOT-BC130426  Fritillaria pluriflora Mrs. C. C. Bruce 1897-2-1 2023 Butte Near Chico Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  CAS-BOT-BC508142  Fritillaria recurva Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC508153  Fritillaria recurva Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  HSC23351  Fritillaria recurva T. C. DeWitt 1971-3-26 8 Butte S side of Butte Creek near Honey Run covered bridge 59 Comment
  CHSC37264  Galium aparine L. Ahart 1982-6-15 3569 Butte Ca. 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC93456  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  CDA13247  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13094 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 mi. N of Magalia. Comment
  CHSC28016  Galium bolanderi M. S. Taylor 1978-7-21 1801 Butte Ca. 1 mi N of Lake Madrone, on E side of Oroville-Quincy Hwy. 609 Comment
  CHSC36513  Galium divaricatum L. Ahart 1982-5-29 3448 Butte N of the Peter Ahart Ranch, ca. 2.5 mi N and 1 mi E of Honcut. 50 Comment
  CHSC47479  Galium divaricatum Lowell Ahart 1974-5-31 460 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC54348  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  UC600428  Galium grayanum H. F. Copeland 1928-8-29 1015 Butte summit of Humboldt Road Neighborhood of Jonesville 2133 Comment
  RSA4163  Galium grayanum var. grayanum E. B. Copeland 1930-7-6 475 Butte Above Jonesville. 2000 Comment
  SEINET10500724  Galium murale Mary Susan Taylor 1980-4-16 Taylor 2494 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
  CHSC111120  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte Southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC116994  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC39493  Galium parisiense Lowell Ahart 1983-6-21 4061 Butte Along Bloomer Hill Road, 1/8 mi west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  CHSC40370  Galium parisiense Lowell Ahart 1985-6-17 5062 Butte 100 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  UCD80740  Galium parisiense CNPS SN Foothill Team 2005-5-6 SNFN 0159 c Butte City of Chico, Upper Bidwell Park, stand is about X miles up the road from the gate, plot is ca. 50 m northwest of the road. 133 Comment
  UCD121893  Galium porrigens George F. Hrusa 1990-4-4 7644 Butte Throughout SE to NE side of North Butte. 350 Comment
  JEPS115586  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 461 Comment
  CHSC25343  Galium tricornutum Marc P. Hayes 1977-4-24 20 Butte Adjacent Hwy 99 ca. 2.3 km S of Butte Creek. 60 Comment
  SEINET10500751  Galium trifidum subsp. subbiflorum Mary Susan Taylor 1975-9-12 Taylor 906 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC51011  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte Near McCabe Creek, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC38660  Galium triflorum Vernon Oswald 1983-6-13 673 Butte Upper Bidwell Park, Chico, at the retaining wall along Chico Creek at the E end of Centennial Ave. 85 Comment
  RSA712784  Galium triflorum L. P. Janeway 1994-7-5 4680 Butte Northern High Sierra Nevada. NE side near top of ridge 0.7 miles ESE of Flea Mtn. 0.3 miles ESE of Campbell Meadow. 1159 Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC84035  Gastridium phleoides Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 45 Comment
  HSC93378  Gastridium phleoides L. Ahart 1995-5-30 7584 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  JEPS119867  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. Comment
  SEINET191205 Image available Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte Lone Pine Forest Guard Station: 2 miles north of route 32 Comment
  UC1122566  Gayophytum heterozygum P. L. Johannsen 1936-7-16 920 Butte 1 3/4 mi ese Butte Mdws. (Plot #1); Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC37448  Gayophytum humile R. A. Schlising; R. Banchero 1980-7-7 3860 Butte E of village of Feather Falls on Lumpkin Ridge, just W of road dropping down to Fall River. 1280 Comment
  POM193354  Gentiana simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  CHSC105513  Gentianopsis simplex Lowell Ahart 2010-9-28 17245 Butte On wet humus, west edge of a 10 acre meadow, about 100 yards east of the poor dirt road, 10 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  SEINET2140398  Gentianopsis simplex E. B. Copeland 1930-1 440 Butte Jonesvilee, Butte County. 1500 Comment
  CHSC113197  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards west of the old road, west of the first area to park, about 3 1/2 miles (air) northeast of Oroville Dam. 252 Comment
  HSC96899  Geranium dissectum L. Ahart 2005-4-14 11704 Butte Gridley, N of Spruce St., S of railroad bridge, E side of RR tracks 28 Comment
  CHSC7103  Geranium molle K. Cox 1969-4-4 15 Butte Bidwell Park. 4.2 mi E. of entrance to upper park. 60 Comment
  CHSC41373  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-7-11 3878 Butte NE part of county near Merrimac; roadsides. 1203 Comment
  CHSC31360  Gilia tricolor Stephen M. Turek 1980-4-14 4 Butte Ca. 2 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
  CHSC40024  Gilia tricolor R. M. Austin 1896-5-1 92 Butte Plains east of Chico. Comment
  HSC43100  Gilia tricolor Maralyn O'Meara 1974-4-20 294 Butte Table Mtn. 305 Comment
  UCD117968  Gilia tricolor Michael A. Vincent; Ethan H. Freid 1998-4-6 8118 Butte Table Mountain. Comment
  RSA638252  Gilia tricolor subsp. tricolor Michael A. Vincent, Ethan H. Freid 1998-4-6 s.n. Butte Table Mountain Comment
  CHSC37257  Githopsis diffusa subsp. robusta L. Ahart 1982-6-15 3574 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC266592  Githopsis pulchella Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC44966  Githopsis pulchella subsp. campestris Pauleen Broyles 1988-4-19 1106 Butte Lower Nance Canyon. 95 Comment
  CHSC96221  Githopsis pulchella subsp. campestris R. Fischer 2006-5-20 978 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on eroded mudflow of a hillside drainage at the northern end of the Humboldt Trail, adjacent Hwy. 32. 441 Comment
  SEINET10873415  Githopsis pulchella subsp. campestris Austin AUSTIN s.n. Butte Comment
  SEINET10464589  Githopsis specularioides Lowell Ahart 1974-4-24 Ahart 427 Butte Peter Ahart Ranch, Honcut 46 Comment
  SEINET10906067  Githopsis specularioides Deaton 1976-4-23 DEATON 36 Butte 10 ft. down south side of Feather Falls trail, about 1 7/8 miles north of Falls parking lot 853 Comment
  UCSB44171  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 4 miles west on Cherokee Rd. from Hwy 70 Comment
  CHSC45280  Gleditsia triacanthos Vernon Oswald 1987-8-26 3227 Butte Rancho Arroyo Chico. North bank of Big Chico Creek between River Road (Sutter Ave.) and the Sacramento River. 36 Comment
  UC1586633  Glinus lotoides Vernon Oswald and Lowell Ahart 1990-10-11 4460 Butte about 4 mi s of Jarbo Gap (Dark Canyon arm of Lake Oroville, on bed of Dark Canyon Creek); Dark Canyon arm of Lake Oroville 243 Comment
  CHSC61541  Glyceria elata Lowell Ahart 1993-7-6 7050 Butte In a meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CDA28229  Glyceria elata T. C. Fuller 1962-7-12 9184 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  SEINET10475276  Gnaphalium beneolens Lowell Ahart 1983-9-17 Ahart 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC113474  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UCD80064  Gnaphalium palustre CNPS SN Foothill Team 2005-5-4 SNFN 0199 b Butte City of Chico, Bidwell Ranch, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  CDA6015  Gnaphalium purpureum L. Ahart 2000-5-13 8345 Butte On the margin of the Thermalito Afterbay, on the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  CHSC85749  Goodyera oblongifolia G. F. Hrusa; T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 800 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
  CHSC28834  Gratiola ebracteata J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 426 Butte Top of North Table Mt, ca 1.0 mi n of jct of e edge of Mt and Cherokee Rd. 381 Comment
  HSC23332  Grindelia hirsutula B. Wilson 1968-5-3 185 Butte On Skyway, 2 mi. W of Paradise, N side of the road Comment
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CHSC5942  Hedera helix M. MacArthur 1968-6-17 176 Butte SW edge of Big Chico Creek, NE of Dining Hall, Chico State College campus. 60 Comment
  CHSC78122  Hedypnois cretica Lowell Ahart 2000-5-31 8429 Butte Below the high water line of Lake Oroville, about 400 yards est of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected north of pond along the eastern meadow edge. 1371 Comment
  JEPS95933  Heliotropium europaeum Lowell Ahart 1999-8-13 8163 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
  CHSC65328  Helminthotheca echioides Lowell Ahart 1995-10-4 7677 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC84037  Helminthotheca echioides Lowell Ahart 2003-6-16 10285 Butte On both sides of Wickman Road, about 100 yards south of Richvale West Road, about 1 3/4 miles west of Richvale. 29 Comment
  CAS-BOT-BC305847  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 mile north of Highway 162, about 2 1/2 miles north-west of Biggs 28 Comment
  CHSC30710  Hemizonella minima M. S. Taylor 1980-5-27 2705 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 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
  UC478492  Heracleum lanatum E. B. Copeland 1930-6-29 665 Butte Jonesville 1500 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 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
  UCD133079  Hesperevax caulescens L. Ahart 1974-5-20 458 Butte Ahart Ranch, Honcut. 45 Comment
  CHSC49847  Hesperocnide tenella Vernon Oswald 1990-3-7 4137 Butte North side of Skyway between Chico and Paradise, ca. 0.2 mi e of the double power transmission lines. 137 Comment
  CHSC93374  Hesperocnide tenella Lowell Ahart 2006-4-27 12535 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut. 45 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  UCR198049  Heteranthera rotundifolia John 1983-8-16 s.n. Butte Sacramento Valley, Biggs Rice Field Station, north of Biggs, 2.5 mi west of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
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Oct 10 2010
  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
  UC897754  Heterocodon rariflorum A. A. Heller 1914-7-23 11616 Butte Chico Meadows 1219 Comment
  SEINET10840496  Heterocodon rariflorum Mary Susan Taylor 1980-5-31 Taylor 2770 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
  CHSC45806  Heteromeles arbutifolia L. P. Janeway 1988-6-19 2816 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/firebreak along powerline (3-wire, wooden pole). 274 Comment
  SEINET5733943 Image available Heteromeles arbutifolia Lowell Ahart 1985-1 5092 Butte Ca. 2.5 mi. NE of Forbestown. 200 yds. S of the dirt road to the Forbestown Res. Yellow Pine Forest.; Forbestown 899 Comment
  CHSC42860  Heuchera micrantha var. erubescens Lowell Ahart 1987-5-9 5596 Butte Along Pulga Road, about 1/2 mile sout-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CAS-BOT-BC312343  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CHSC97365  Hieracium albiflorum Paul Maslin 2005-5-18 63 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  UCD133143  Hieracium albiflorum L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC33099  Hirschfeldia incana R. E. Preston 1981-1-20 31 Butte On the shoulders of River Rd., ca. 0.6 km se of Chico Cr., ca. 8.7 km wsw of Chico. Comment
  CHSC39560  Hoita macrostachya Lowell Ahart 1983-7-24 4201 Butte About 1/2 mile south-west of the intersection of the Oroville Forbestown Road and Black Bart Road, about 6 miles south-west of Forbestown. 750 Comment
  CHSC38363  Holocarpha virgata subsp. virgata Vernon Oswald 1983-10-2 1048 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft e of the head of the western intermittent stream which flows into Sycamore Creek. In the middle of the North Rim Trail. 304 Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  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
  CAS-BOT-BC285087  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2120 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC143974  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  UC481567  Horkelia tridentata subsp. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  UC860239  Horkelia tridentata subsp. tridentata A. A. Heller 1914-5-18 11413 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CHSC42556  Hosackia oblongifolia var. oblongifolia Lowell Ahart 1987-5-27 5709 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC20536  Hydrangea arborescens Pamela Caldwell 1971-11-7 Butte CSUC campus. N bank of Chico Creek. Amphitheater. Comment
  CHSC55469  Hydrocotyle umbellata L. P. Janeway 1991-4-21 3916 Butte About 1 1/4 mi south of Wyandotte and 1/8 mi west of Dunstone Road. 167 Comment
  CDA34639  Hypericum anagalloides L. Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC38062  Hypericum anagalloides R. E. Preston 1982-6-23 308 Butte In meadow at edge of stream, Deadwood Creek at Dixie Valley Road. 999 Comment
  CHSC41257  Hypericum anagalloides S. C. Morey 1983-7-21 476 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC3323  Hypericum concinnum Robert L. Smith 1966-5-22 48 Butte Paradise, 5 miles SW of Post Office. Comment
  CHSC4615  Hypericum concinnum R. Carter 1966-6-15 428 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd.; growing on bank above road in rather dry soil. 883 Comment
  RSA303857  Hypericum concinnum J. R. Shevock 1972-5-19 1764 Butte Hwy 70, near Lake Oroville. 30 Comment
  CDA5079  Hypericum perforatum D. G. Kelch 2006-8-2 6 .342 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CAS-BOT-BC401332  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CDA31955  Hypochaeris glabra L. Ahart 2009-5-8 15654 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC34705  Hypochaeris glabra M. S. Taylor 1981-5-29 3809 Butte Both sides of 22N31, Chino Ridge, ca. 2 mi nw of its jct with French Creek, ca. 4 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC3547  Ilex opaca Gary Dutton 1966-2-16 24 Butte Found at CSC campus north side of Aud. Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  UC176159  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte near Stirling 1074 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  CHSC78103  Iris macrosiphon Caleb E. Casey 1999-4-9 Butte Bear Hole, Upper Bidwell Park. 121 Comment
  POM109032  Iris macrosiphon C. C. Bruce 1897-04 2068 Butte Little Chico Comment
  CHSC87550  Iris pseudacorus R. D. Fischer 2004-3-29 73 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  CHSC115682  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern HighSierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approx. 0.25 miles north of its intersection with Ponderosa Way. 731 Comment
  CHSC31520  Isoetes howellii L. Ahart 1978-4-21 1662 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3450183  Isoetes howellii Unknown 2003-5-28 10233 Butte Alleghany, Alleghany, about 7 air miles northeast, Harris Meadow, upper west branch of Black Jack Ravine, on the west side of Forest highway 98 270 Comment
  JEPS104158  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte Ca 70-100 feet sw of the section corner pipe, ca 1/8 mi sw of the tall Digger Pine on the S edge of 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. 299 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  JEPS127198  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 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 4 1/4 miles (air) northeast of Honcut. Comment
  SEINET10530331  Isoetes nuttallii Mary Susan Taylor 1980-3-28 Taylor 2397 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC113273  Isolepis setacea Lowell Ahart 2014-5-13 19467 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CAS-BOT-BC112644  Isolepis setacea Lowell Ahart 1989-5-28 6285 Butte South of Oregon Gulch road, ca. 1/2 mi N of the Cemetery, ca. 1 1/4 mi W of Rocky Point 335 Comment
  CHSC109653  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-19 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park raod, southeast part of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC29991  Jensia rammii L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC93633  Juglans nigra Paul Kirk 2001-5-25 5 Butte City of Chico, parking lot on south side of the Senator Theater at 517 Main St. 30 Comment
  SEINET10971326  Juncus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4204 a Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC37255  Juncus articulatus L. Ahart 1982-8-22 3747 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC96973  Juncus articulatus Lowell Ahart 2007-7-11 14286 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
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  JEPS98459  Juncus brachyphyllus Lowell Ahart 2000-6-6 8459 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  CHSC99011  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14795 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC37069  Juncus covillei L. Ahart 1982-9-29 3839 Butte Banks and edges of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC61349  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte On the south side of the dirt road, about 200 yards south-west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC50696  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte Near the west edge of a small pond, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  JEPS115974  Juncus effusus var. exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  CHSC112329  Juncus exiguus Lowell Ahart 2013-7-9 18830 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC113446  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-10 19623 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC59021  Juncus howellii Lowell Ahart 1992-7-26 6840 Butte Near a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC95186  Juncus howellii R. D. Fischer; Jenny Marr 2004-9-5 787 Butte Sierra Nevada Mountains, the north-east corner of Butte County and ca. 6 miles north of Butte Meadows and 1 mile north of Humboldt Road along Scotts John Road/creek. 1524 Comment
  UC842621  Juncus howellii A. A. Heller 1917-7-28 12837 Butte Butte Meadows 1280 Comment
  UC1438370  Juncus leiospermus Lowell Ahart 1978-4-21 1661 Butte Peter Ahart Ranch Honcut 50 Comment
  JEPS110149  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut 58 Comment
  CAS-BOT-BC110135  Juncus leiospermus var. leiospermus Lowell Ahart 1984-5-7 4589 Butte Near Kunkle Res., south of Paradise. 600 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
  JEPS110154  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Or 354 Comment
  JEPS122233  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC1543893  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1703 Butte ca 7 mi n Oroville; Sierra Nevada, Table Mt. 400 Comment
  UCD141562  Juncus longistylis A. A. Heller 1917-7-28 12837 Butte Butte Meadows. 1280 Comment
  JEPS117670  Juncus nevadensis Lowell Ahart 2010-9-28 17259 Butte On wet humus, 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 Philbrood Reservoir 1886 Comment
  CHSC32377  Juncus occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-4-7 562 Butte Edges of creek. E of the jct. of Upper Rocky Honcut Cr. and Swedes Flat Rd., (E of the town of Rackerby and SE of the town of Oroville). Comment
  CHSC99745  Juncus occidentalis Lowell Ahart 2008-6-13 14816 B Butte Along a small road, small meadow, bottom of an old gold mined area, about 180 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  JEPS114977  Juncus occidentalis Lowell Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  CHSC57158  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 B Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  CHSC74026  Juncus oxymeris B. Castro 1998-7-8 804 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Along footpath. 929 Comment
  CHSC88164  Juncus oxymeris Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  UC600813  Juncus parryi H. F. Copeland 1930-7-12 Butte above Butte Creek House; Jonesville Comment
  CDA34630  Juncus tenuis L. Ahart 2009-6-19 15918 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC32375  Juncus tenuis J. D. Jokerst 1980-6-14 837 Butte Bald Rock, on its N slopes. 914 Comment
  SEINET10472354  Juncus tenuis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4103 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
  UCSB63745  Juncus tenuis Ahart, Lowell 1998-6-3 Butte T20N, R4E, NE 1/4 Sec. 17; NW of the cow chute along Cherokee Rd; North Table Mtn; about 7 mi (air) north of Oroville 403 Comment
  CHSC96888  Juncus trilocularis Lowell Ahart 2007-6-12 14077 Butte Along a small dry wash, about 70 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
  CHSC38925  Juncus uncialis Vernon Oswald 1983-5-15 499 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure (500 ft e of the junction of Upper Park Rd. and Wildwood Ave. In vernal pond. 85 Comment
  CHSC59019  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CAS-BOT-BC80920  Juniperus californica Lowell Ahart 1983-4-10 3922 Butte about 1 1/2 miles north-east of HIghway 99 & Pentz Road 100 Comment
  RSA123366  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte 8 miles southeast of Chico on Neal Road 122 Comment
  UC725516  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal road above a mile from the junction with the Oroville road 137 Comment
  JEPS115826  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
  JEPS95060  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte ca. 8 mi. (air) n.e. Stirling City (ca. 0.25 mi. e. of Table Mountain, on w. side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  UCSB63845  Keckiella lemmonii Ahart, Lowell 1997-8-1 Butte on west side of Little Kimshew Creek; about 1/4 mi E of Table Mtn; about 8 mi NE of Stirling City; T24N R5E Section 4 1371 Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC31959  Koeleria phleoides J. D. Jokerst 1979-5-2 1216 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC1484  Kumlienia hystricula J. Koopman 1929-3-5 Butte Centerville road. 114 Comment
  CHSC52820  Kumlienia hystricula R. E. Preston 1982-3-27 208 Butte N bank of McCabe Cr; ca. 1.7 mi s of Enterprise bridge over Lake Oroville, ca. 11 mi e of Oroville. 451 Comment
  SEINET5338188  Kumlienia hystricula M. J. Williams 1967-4-15 s.n. Butte Feather Falls Road. 610 Comment
  CHSC26747  Lactuca saligna M. S. Taylor; M. Hayes 1977-8-16 1443 Butte Around maintance buildings, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  SEINET10872060  Lactuca scariola var. integrata Mary Susan Taylor 1979-11-11 Taylor 2280 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC27237  Lagerstroemia indica P. Moyer 1971-9-25 3 Butte CSUC campus. W side Bus-Soc Sci. Bldg. 60 Comment
  UC292612  Lagophylla dichotoma Hartweg 1848-1-1 1793 Butte Sacramento Valley Comment
  CHSC102845  Lagophylla glandulosa Lowell Ahart 2009-6-30 15964 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  HSC102686  Lamarckia aurea J. P. Smith 2013-5-5 13700 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CHSC3624  Lamium amplexicaule John Francis 1966-2-27 29 Butte Field at intersection of Citrus and Legion, Chico. Comment
  CHSC82103  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the west edge of the Midway, about 1 mile north of Richvale. 30 Comment
  CHSC4650  Lasthenia fremontii R. Carter 1966-4-21 356 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 10 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. 274 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  CHSC90996  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte Margins of a small vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  POM29957  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  CHSC82404  Lathyrus angulatus Lowell Ahart 2002-5-7 9621 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
  JEPS98423  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte 5 air miles SW of Oroville (near margin of Thermalito Afterbay, S side of access road to boat ramp, w of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 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
  SEINET12151170  Lathyrus hirsutus C. V. Piper 1906-1 s.n. Butte Chico Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  CHSC28159  Lathyrus tingitanus R. J. Goedl 1979-4-21 32 Butte Ca. 5 mi n of Oroville, 5 ft w of Cherokee Mountain Road. 335 Comment
  CDA4167  Lathyrus tingitanus T. C. Fuller 1967-6-1 15921 Butte West side of Highway 70 to Marysville, 2.5 miles south of Oroville. 0 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
  CHSC80530  Lavatera cretica Lowell Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 1/4 miles (air) northwest of Honcut, about 1 mile south of Oroville. 29 Comment
  CHSC33353  Layia fremontii R. M. Winchell 1980-4-23 5 Butte N of Chico. Between Singer Creek and Cana-Pina Creek Road. Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  CAS-BOT-BC274354  Leersia oryzoides Lowell Ahart 1987-7-3 5777 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SBBG28947  Lemna trisulca E. B. Copeland 1930-7-18 Butte Jonesville 1550 Comment
  CHSC105261  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC99306  Leontodon saxatilis subsp. longirostris Lowell Ahart 2008-5-21 14768 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC20877  Lepechinia calycina Robert A. Schlising 1963-6-7 2613 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC29836  Lepechinia calycina M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2768 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC104003  Lepidium didymum Lowell Ahart 2010-5-28 16740 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  SEINET5326385  Lepidium nitidum var. nitidum R. R. Halse 2002-3-27 6153 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  UC1132180  Leptochloa fascicularis H. S. Yates 1936-8-14 6126 Butte 3 mi nnw Nelson; Chico Quadrangle Comment
  CDA32440  Leptochloa fascicularis G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4366 Butte On levees of the Rice Experiment Station, 3 mile north of Biggs on Highway 162 0 Comment
  CAS-BOT-BC273951  Leptochloa fusca subsp. fascicularis E. M. Johnston 1915-1-1 s.n. Butte Biggs Comment
  POM74009  Leptosiphon androsaceus C. C. Bruce 1897-04 1966 Butte [No locality information provided] Comment
  CHSC2429  Leptosiphon ciliatus R. Carter 1965-6-21 251 Butte Found on Oroville-Quincy Rd. at Merrimac, 5.5 mi. N of Mountain House, E 10' from road and S 15' from creek. 1176 Comment
  CHSC2387  Leptosiphon parviflorus R. Carter 1965-4-12 176 Butte Found ca. 8 mi. E of Oroville ca. 1 mi. E of Lund Ranch house at end of Feathervale. 274 Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC50799  Lessingia nana Vernon Oswald; Mary Bailey 1990-8-2 4430 Butte North side of Neal Rd, 0.3 mi east of Hwy 99. Pasture bordering the intermittent stream draining Nance Canyon. 60 Comment
  UCD134085  Lessingia nana P. B. Kennedy 1927-6-1 s.n. Butte Gridley. Comment
  CAS-BOT-BC341784  Lessingia nemaclada John Thomas Howell 1959-9-26 35084 Butte Arch Rock, North Fork Feather River 457 Comment
  CAS-BOT-BC341793  Lessingia nemaclada M. S. Taylor 1979-7-22 2170 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge, over Hwy 70, ca. 27 mi n of Oroville 487 Comment
  UC1287453  Lessingia virgata Willard Spence 1960-9-7 625 Butte Alternate Rt. 40 7 mi s Oroville Comment
  SEINET12332637  Leucophysalis nana L. P. Janeway, Schlising, R. A. 1988-1 2918 Butte just NW of Summit Lake 1951 Comment
  SEINET10874388  Leucothoe davisiae Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4179 Butte T25N R4E sw 1/4 sw 1/4 sec. 33. Paradise NE quad. Both sides of the Skyway 1.8 mi S of Inskip. Yellow Pine Forest. 4100 ft. 1250 Comment
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  CHSC37670  Ligusticum californicum M. S. Taylor 1982-8-16 4997 Butte At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald mt, ca. 3 mi ne of Stirling City. 1645 Comment
  JEPS117418  Ligusticum grayi Lowell Ahart 2010-9-28 17243 Butte On damp black rich soil, meadow edges or under red fir trees, about 50 yards east of the poor dirt road, 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 Philbrood Reservoir 1886 Comment
  POM161665  Lilium kelleyanum E. B. Copeland 1929-07 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  SEINET10469576  Lilium pardalinum Mary Susan Taylor 1978-7-19 Taylor 1735 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC133050  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-BC110625  Limnanthes alba Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC23668  Limnanthes alba M. S. Taylor 1976-4-27 1094 Butte On n side of Ponderosa Way, ca. 6 mi e of junc of Ponderosa Way and Cohasset Hwy, ca. 23 mi ne of Chico. On road embankment. 609 Comment
  RSA727543  Limnanthes alba Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills: along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset. 701 Comment
  UC869472  Limnanthes alba A. A. Heller 1917-4-15 12674 Butte ten mi n Chico 64 Comment
  POM311146  Limnanthes alba subsp. alba C. T. Mason 1949-4-23 1252 Butte Butte County: 7 miles S of Oroville in a roadside ditch along the E side of Hwy 24 Comment
  SEINET12183092  Limnanthes douglasii G. C. Halcomb 1978-1 3 Butte ca 1 mi E of Chico at intersection of Bruce Rd. and Skyway Rd. 100 yds WNW of Bruce Rd 70 Comment
  SEINET12183093  Limnanthes douglasii A. K. Bos 1978-1 4 Butte Along Skyway at intersection of Skyway and Bruce Rd., 3.5 mi ESE of Chico Comment
  CHSC33850  Limnanthes douglasii subsp. rosea R. E. Preston 1979-4-19 14 Butte Northernmost Butte County. Ditches along Cana-Pine Creek Road nw of Singer Creek. 56 Comment
  CHSC52407  Limnanthes douglasii subsp. rosea John Gurrisi 1979-4-17 9 Butte 10 mi NW of Chico at hwy 99 and Broyles Rd jct. 64 Comment
  RSA33078  Limnanthes douglasii subsp. rosea A. A. Heller 1938-4-14 s.n. Butte Flat, treeless summit of Table Mountain north of Oroville. Upper Sonoran Life Zone. 305 Comment
  UC869482  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (hills below Oak Belt) Comment
  RSA31668  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 s.n. Butte 8 miles north of Oroville. Comment
  HSC93614  Limnanthes floccosa subsp. californica James D. Jokerst, M. S. Taylor 1980-3-20 487 Butte 50 m NW of Jct. of Bruce Rd. and Skyway, SE side Chico. Comment
  JEPS111053  Limnophila X ludoviciana Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16446 Butte Rice Experiment Station NW of Biggs, drained field at NE corner of Hamilton and Riceton roads. Biggs 7.5' Quad. Comment
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Dec 15 2017
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 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
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  SEINET12329568  Linanthus ciliatus L. Ahart, Ahart, P. 1984-1 4645 Butte about 1 mi NE of the West Branch Bridge, ca 2 mi S of Old Yankee Hill, ca 16 mi NE of Oroville 450 Comment
  SEINET12327002  Linanthus filipes R. E. Alumbaugh 1984-1 5 Butte 6.4 mi E of Hwy 99 and ca 150 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  UC478476  Linanthus harknessii E. B. Copeland 1931-7-1 681 Butte Butte Creek Jonesville 1500 Comment
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  CHSC11951  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville. Mountain top west of 'the Summit. 2150 Comment
  SD147476  Lindernia dubia Lowell Ahart 1980-8-16 2577 Butte Near Honcut. 60 Comment
  CDA14464  Lindernia dubia var. anagallidea G. D. Barbe, June McCaskill 1990-9-5 4393 Butte Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  SEINET3450716  Lindernia dubia var. anagallidea Unknown 2003-6-23 10305 Butte Cottonwood, Cottonwood, about 12 air miles east /northeast, about 2.8 air miles south/southwest of the Darah Springs State Fish Hatchery, about 0.25 miles south of the Coleman Canal, about 350 yards south of the barn 30 Comment
  JEPS127061  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET9797295 Image available Lipocarpha aristulata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CDA39122  Lipocarpha aristulata L. Ahart 2000-10-15 8709 Butte On the east edge of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 (air) miles southwest of Chico. Comment
  JEPS120828  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CHSC5969  Liquidambar styraciflua M. MacArthur 1968-6-17 219 Butte Ca. 60 ft. NW of Big Chico Creek by path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  UC600635  Listera convallarioides H. F. Copeland 1930-7-25 Butte Jonesville Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  CHSC2471  Lithophragma bolanderi R. Carter 1965-3-13 157 Butte Found on North Table Mt. ca. 20 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CHSC44350  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CAS-BOT-BC123105  Lithophragma trifoliatum C. C. (Mrs.) Bruce 1897-4-1 1844 Butte foothills Comment
  CAS-BOT-BC428451  Lithophragma trifoliatum Lowell Ahart 1980-3-26 2051 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC27667  Lithospermum californicum Mike O'Bryan; Robert A. Schlising 1978-4-17 3219 Butte N of Forest Ranch, on ridge above Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CHSC29287  Lithospermum californicum R. A. Schlising 1980-5-23 3597 Butte N of Lake Oroville State Rec. Area in Lassen Nat. Forest, 3.5 mi e junction Hwy 70 and Big Bend Road and from here, at community of Big Bend, 1.0 mi s; roadside. Comment
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  SEINET10497331  Lithospermum californicum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4090 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC342139  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  UCD66076  Lolium multiflorum Barbara Ertter; Lowell Ahart 1986-4-13 5889 Butte Ca. 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch. 30 Comment
  SEINET10960424  Lolium multiflorum Laurel L. Huey 1980-4-25 Huey 19 Butte T22N, R1E, Sec 10, (Richardson Springs SW Quad 15'). Immediately S of Chico Muni Airport, W of Cohasset Highway. 60 Comment
  CAS-BOT-BC269076  Lolium perenne Lowell Ahart 1988-9-4 6175 Butte Along the north side of a branch of Last Chance Creek, east of the dirt road, about 1 mile west and a little north of Bald Mountain 1005 Comment
  CHSC104821  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte Both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  CHSC42608  Lomatium dissectum var. multifidum Vernon Oswald 1985-4-23 1719 Butte Centerville Flume 0.9 mi upstream from Humbug Rd. 316 Comment
  CHSC60646  Lomatium dissectum var. multifidum Vernon H. Oswald 1993-4-12 5257 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. P 341 Comment
  CHSC77417  Lomatium utriculatum Laura Bogni 1997-3-25 23 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET10454538  Lomatium utriculatum Lowell Ahart 1985-5-15 Ahart 4976 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CHSC115689  Lonicera hispidula Emily Meigs Doe 2015-5-12 28 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.75 mi. (air) NW of Forbestown. Roadside of Rd. 19N19, ap-proximately 750 ft. NE of its junction with Ponderosa Way. 746 Comment
  CAS-BOT-BC240684  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  SEINET12331841  Lonicera interrupta Unknown 1985-1 5065 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 120 yards S of dirt road 975 Comment
  CHSC21382  Lonicera japonica M. S. Taylor 1975-6-22 784 Butte On SW side of furthest E bridge on California State University, Chico. Comment
  RSA303521  Lotus humistratus J. R. Shevock 1972-5-19 1771 Butte Hwy 70, approx 10 mile N of Lake Oroville. 549 Comment
  SEINET3694615 Image available Lotus macranthus A. A. Heller 1938-5-28 15125 Butte On Feather River Hwy west of Pulga Comment
  CDA27344  Lotus wrangelianus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC33361  Lotus wrangelianus R. M. Winchell 1980-4-16 8 Butte Bidwell Park e of Chico along dry wash. Comment
  CHSC112878  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC109778  Ludwigia palustris Lowell Ahart 2012-10-20 18510 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS95993  Ludwigia peploides subsp. peploides Lowell Ahart 1999-9-21 8280 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
  SJSU10702  Lupinus albicaulis F. S. Gereb 1968-5-4 93 Butte 5 mi E of Chico 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
  CHSC86544  Lupinus albicaulis var. albicaulis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7860 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.5 km east-southeast of south end of Bidwell Bar bridge. 280 Comment
  CHSC23674  Lupinus albifrons M. S. Taylor 1976-4-27 1098 Butte On n side of Ponderosa Way, ca. 4 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC34690  Lupinus apertus M. S. Taylor 1981-5-13 3699 Butte In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 2 air mi w of Elks Retreat. 1310 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  UC82158  Lupinus argenteus Mrs. R. M. Austin July 1896 706 Butte Colby Comment
  HSC32403  Lupinus bicolor Kitsy Kelly 1974-4-20 22 Butte Table Mtn. Volcanic area Comment
  SEINET10452030  Lupinus bicolor subsp. tridentatus Lowell Ahart 1983-4-10 Ahart 3925 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
  CHSC65779  Lupinus bicolor var. tridentatus Vernon Oswald 1996-4-10 7357 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. Common in an equiptment storage lot off of 7 Mile Lane near the S end of Tract 8, Sanctuary 2. 33 Comment
  CDA13334  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13180 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. w/ 13175. Comment
  CHSC96219  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  UC725984  Lupinus latifolius var. columbianus A. A. Heller 1919-6-7 13224 Butte Snow Mountain Comment
  CHSC46453  Lupinus lepidus var. sellulus V. Oswald 1989-6-27 3821 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesviile. 1767 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  CHSC90370  Lupinus nanus Joseph Silveira 1982-4-17 5 Butte 65 m ene of Horseshoe Lake and 80 m n of Big Chico Creek, 4 km ne of Chico. 190 Comment
  RSA0003499  Lupinus quercetorum A. A. Heller 1938-4-3 15010 Butte Roadside 1.5 miles below Cherokee Comment
  POM118225  Lupinus sellulus var. lobbii H. M. Hall 1912-7-24 320 Butte Middle Fork of Feather River. 1280 Comment
  CAS-BOT-BC329275  Lupinus vallicola Lowell Ahart 1980-5-25 2347 Butte Sierra Nevada. Along Ponderosa Way. 500 Comment
  SEINET11787630  Luzula campestris L. Ahart, Ahart, P. 1984-1 4740 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  JEPS87449  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  JEPS121974  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  UC600807  Luzula divaricata E. B. Copeland 1930-7-12 Butte Jonesville , highest Butte Creek Region (highest Butte Creek Region) Comment
  CHSC50064  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC98999  Luzula macrantha Lowell Ahart 2008-5-30 14793 Butte Dry bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  CAS-BOT-BC441206  Luzula macrantha Lowell Ahart 1982-5-8 3411 Butte Near the Forbestown Res. About 1/2 mile SW of the reservoir, about 4.5 miles NWE of Forbestown 800 Comment
  UC1609080  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  JEPS120935  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC38295  Lychnis coronaria Vernon Oswald 1983-5-31 585 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 300 ft w of Day Camp. 91 Comment
  CHSC84175  Lychnis coronaria Lowell Ahart 2003-7-12 10374 Butte On both sides of Milsap Bar Road, about 1/8 mile south of the bridge across the North Fork of the Feather River, about 4 miles (air) northeast of the Brush Creek Work Center, about 20 miles (air) northeast of Oroville. 997 Comment
  JEPS115184  Lychnis coronaria Lowell Ahart 2009-6-19 15935 Butte Along trail, onn the east side of Big Chico Creek, about 50 yards west ofTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS120153  Lycopersicon esculentum Lowell Ahart 2012-10-20 18507 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC21048  Lycopus americanus M. S. Taylor 1975-10-3 934 Butte Ca. 1/4 mi n of the washout on the Sacramento River, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC48485  Lycopus americanus Vernon Oswald 1983-10-10 1064 Butte Growing on the e bank of Pine Creek just s of the Calif. Hwy. 32 bridge. Comment
  JEPS115358  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico 236 Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  RSA180583  Lythrum salicaria L heinrichs 1965-7-5 s.n. Butte Butte County: roadside ditch, Pacific high road & state Hwy 70 (Hwy 40ft) to Marysville, 2.5 miles S of Oroville. Comment
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Sep 11 2012
  RSA4140  Madia bolanderi E. B. Copeland 1930-8-4 S.N. Butte Jonesville 1500 Comment
  UCD80097  Madia citriodora CNPS SN Foothill Team 2005-5-5 SNFN 0158 d Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CAS-BOT-BC342722  Madia elegans Clarence R. Quick 1952-7-1 52 -130 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  JEPS104642  Madia elegans Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, ca 2 1/2 miles north and 2 2/3 miles east of Honcut, ca 12 miles (air) southeast of Oroville. 60 Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  CHSC34707  Madia elegans subsp. vernalis M. S. Taylor 1981-5-22 3800 A Butte Around a landing, ridge n of Flea Valley Creek drainage, n of Pulga, ca. 5 air mi e of Magalia. 1005 Comment
  RSA718336  Madia exigua L. Ahart 2006-6-9 12650 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  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
  CHSC43622  Madia gracilis Vernon Oswald 1985-6-2 1796 Butte Upper Bidwell Park, Chico, along Upper Park Rd. between the east and west entrance to Parking Area S at Brown's Hole. At the edge of the road where it cuts through a brush- covered slope. 231 Comment
  CHSC48181  Madia gracilis Vernon Oswald 1984-5-21 1190 Butte Humbug Rd. (Centerville Rd.), 4.1 mi s-w of Nimshew Ridge Rd. 396 Comment
  SBBG28509  Madia gracilis E. B. Copeland 1931-8-14 Butte Jonesville 1500 Comment
  RSA691010  Madia gracilis subsp. gracilis L. Ahart 2003-6-30 10323 -A Butte On the southeast side of Ponderosa Way, about 2.5 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown 578 Comment
  RSA725049  Madia madioides L. P. Janeway 2007-6-11 9038 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  RSA0045596  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  CHSC43733  Malus sylvestris Vernon Oswald 1987-4-21 2337 Butte Hwy 32 just n of the 37.0 mi road marker, ca. 1 mi s of Lomo. On the edge of the road. 1158 Comment
  CHSC11097  Malva nicaeensis Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA5025  Malva parviflora L. Ahart 2003-5-9 10122 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC1038  Malva sylvestris J. Baynes 1929-4-21 Butte College Campus, Chico. 57 Comment
  CHSC3467  Marah fabacea var. agrestis Roger Jaegel 1966-3-2 17 Butte 4 miles northeast of Chico. Along the bank of Big Chico Crk. Upper Bidwell Park. Comment
  CHSC19932  Marrubium vulgare M. S. Taylor 1975-2-16 386 Butte Abundant ca. 2 mi s of Concow Reservoir on Jordan Hill Rd. Comment
  JEPS115503  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC24566  Marsilea vestita Lowell Ahart 1976-11-2 Butte Peter Ahart Ranch, Honcut. 33 Comment
  SEINET10530351  Marsilea vestita Mary Susan Taylor 1980-7-6 Taylor 3051 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  UC205070  Marsilea vestita subsp. vestita A. A. Heller 1914-7-31 11633 Butte ca. 6 mi nw Chico; Sacramento valley Comment
  UCR208956  Meconella denticulata H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  SEINET10452579  Medicago arabica Mary Susan Taylor 1977-11-12 Taylor 1540 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC116524  Melia azedarach B. Castro 2013-4-25 1993 Butte Sacramento Valley. Just N of Chico, on W edge of Hwy 99 ca 150 ft N of its jcn with Wilson Landing Rd. 54 Comment
  JEPS110265  Melica aristata Lowell Ahart 2006-6-24 12861 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1128 Comment
  JEPS110337  Melica aristata Lowell Ahart 2006-7-16 12966 Butte East of the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  RSA4654  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  UC600750  Melica aristata H. F. Copeland 1932-7-19 Butte Jonesville Butte Creek Canyon (Butte Creek Canyon) 1550 Comment
  UC699616  Melica bulbosa E. B. Copeland 1944-7-6 Butte Butte Meadows; Sierra Nevada Comment
  SEINET11688375  Melica californica Unknown 1985-1 4974 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC38079  Melica fugax R. E. Preston 1982-7-21 350 Butte Ca. 1 mi SE of Philbrook Reservoir. 1828 Comment
  CDA15361  Melica harfordii G. F. Hrusa 1997-5-29 13809 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Scattered in dry, deep shade of coniferous forest. Perennial. Comment
  CHSC82477  Melica harfordii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9739 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
  CHSC50852  Melica stricta Vernon Oswald; Lowell Ahart 1990-7-19 4374 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1950 Comment
  CHSC42927  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  LA12166  Melica subulata E. B. Copeland; 1929-7-16 338 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC262502  Melica torreyana A. A. Heller 1902-5-13 554 Butte Near Clear Creek Comment
  CHSC54118  Melica torreyana Vernon H. Oswald; Lowell Ahart 1991-5-13 4584 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 170 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  UCD107993  Melilotus albus L. Ahart 1982-7-10 3670 Butte 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Comment
  CDA42908  Melissa officinalis L. Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC43846  Mentha canadensis B. Castro 1987-8-25 203 Butte In Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC48487  Mentha pulegium Vernon Oswald 1987-6-12 2995 Butte East side of the Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  SFV16939  Mentha spicata J. N. Hogue 1980-9-6 83 .8 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  UC480654  Mertensia ciliata H. F. Copeland 1931-6-11 1529 Butte Kirby Meadows 1981 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-BC428994  Micranthes fragosa A. A. Heller 1940-3-8 15507 Butte Just above the Spring House on the Neal Road to Paradise Comment
  CHSC3638  Micranthes integrifolia Alice L. Stoll 1966-3-7 50 Butte Near Covered Bridge, Honey Run Road, Paradise. Comment
  CAS-BOT-BC429203  Micranthes oregana A. A. Heller 1914-6-22 11493 Butte Chico Meadows 1219 Comment
  HSC23411  Micropus californicus var. californicus Carolyn Fante 1971-4-18 2 Butte N side of Pentz Rd. 76 Comment
  CHSC40485  Microseris acuminata Lowell Ahart 1985-4-21 4879 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  UCD80105  Microseris acuminata CNPS SN Foothill Team 2005-3-30 SNFN 0071 Butte CDFG North Table Mountain Wildlife Area, approximately 2 mi. west of parking and 200-300 m north. 372 Comment
  CHSC31663  Microseris sylvatica L. Ahart 1979-4-19 1831 Butte Fields near Douglas Oaks. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET178518  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville by Butte Cr 1500 Comment
  UCD96092  Mimulus angustatus Dena Grossenbacher; Brian Green 2008-5-2 812 Butte Campbell Flat, about 0.6 miles south of Humpyback and Cherokee Road junction along both sides of Cherokee Road and within 20 meters of it, North Table Mountain. 424 Comment
  UCD22551  Mimulus aurantiacus James I. Mallory 1970-5-26 374 Butte T22N R3E Sect. 3 426 Comment
  UC196052  Mimulus aurantiacus var. grandiflorus A. A. Heller 1914-5-18 11407 Butte near Forest Ranch; Sierra 609 Comment
  RSA70710  Mimulus aurantiacus var. grandiflorus L. S. Rose 1951-6-26 51018 Butte Feather River Canyon, NE of Oroville 183 Comment
  SBBG40472  Mimulus douglasii J. Ingram, A. Ingram 1960-4-5 288 Butte Neal Rd, ca. 2 mi S of Paradise Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  POM5060  Mimulus glaucescens A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  RSA0087956  Mimulus glaucescens Christopher T. Ivey 2013-5-9 380 Butte Pulga Road, near intersection with Hwy 70. 490 Comment
  JEPS48318  Mimulus guttatus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2686 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  SEINET10570237  Mimulus kelloggii Mary Susan Taylor 1980-4-18 Taylor 2501 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
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 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
  UC1509660  Mimulus nasutus M. S. Taylor and K. Tharp 1983-3-12 5442 Butte ca. 3 mi sse Chico (along small rd. off Stillson Canyon Rd. (leading to Mannion property)); Chico quad. 152 Comment
  UCD122653  Mimulus nasutus J. Doty 1969-3-31 618 Butte on east side of Cohasset Road, ca. 8 miles north of Chico. Comment
  JEPS95876  Mimulus pilosus Lowell Ahart 1999-8-13 8133 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD98228  Minuartia cismontana G. F. Hrusa 1989-4-15 5922 Butte North Table Mountain. On west side of Cherokee Mountain Road. 300 Comment
  CHSC31386  Minuartia douglasii J. D. Jokerst 1979-4-13 1194 Butte Top of North Table Mt., ca 200 meters N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  POM161689  Mitella pentandra E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC29272  Mollugo verticillata R. A. Schlising 1979-8-17 3469 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay; on disturbed margins of large ditches. Comment
  JEPS103455  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CAS-BOT-BC219943  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC67987  Monardella odoratissima James D. Jokerst 1989-7-3 3125 Butte Hwy. 70 4.05 mi E of Concow turnoff. Comment
  UC175380  Monardella odoratissima subsp. glauca A. A. Heller 1913-7-7 10792 Butte near Stirling 1036 Comment
  UC196294  Monardella odoratissima subsp. glauca A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  JEPS105012  Monardella odoratissima subsp. pallida Dean W. Taylor 1995-8-6 15386 Butte Rocky Ridge, north end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest; Northern Sierra Nevada 975 Comment
  UC2035956  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  CHSC43020  Monardella sheltonii L. P. Janeway 1987-6-8 2155 Butte On Fourmile Ridge near French Cr just south of Fourmile Ridge Rd on rd into Ram Cr. 716 Comment
  CHSC76342  Monardella sheltonii L. P. Janeway 1999-7-17 6504 Butte Steep northwest-facing slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CAS-BOT-BC444884  Montia fontana Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC40382  Montia fontana subsp. chondrosperma L. Ahart; J. Jokerst 1985-5-10 4952 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC50110  Montia linearis Vernon H. Oswald 1990-5-9 4196 Butte Colby Creek Meadow on the north side of Humboldt Rd, ca. 1 mile west of Jonesville. Occasional on moist, sloping meadow on the west side of Colby Creek, slightly north of the mouth of Willow Creek. 1475 Comment
  CDA13311  Montia parvifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13157 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS 23N60. Comment
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC34166  Muhlenbergia mexicana L. Ahart 1981-9-19 3182 Butte Along banks of Feather River ca. 100 m n of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  JEPS100187  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC29221  Myosurus minimus subsp. minimus M. S. Taylor; J. D. Jokerst 1980-3-28 2398 Butte In vernal pool, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99. 68 Comment
  CHSC43251  Myriophyllum aquaticum Lowell Ahart 1987-10-22 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 609 Comment
  CHSC35960  Myriophyllum spicatum M. S. Taylor 1982-5-22 4497 Butte Graylodge Waterfowl Refuge, aquatic in quiet water at end of Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CHSC46198  Nama lobbii L. P. Janeway 1988-6-25 2859 Butte At the jct of Skyway and Bull Hill Rd; 3.8 mi N of Inskip. 1584 Comment
  CAS-BOT-BC260095  Nassella pulchra Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD87539  Nassella pulchra A. A. Heller 1915-4-3 11804 Butte Base of South Butte, Marysville. 0 Comment
  CAS-BOT-BC60371  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  SEINET10832615  Navarretia Mary Susan Taylor 1978-7-19 Taylor 1789 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  CHSC111149  Navarretia filicaulis Lowell Ahart 2012-6-9 18180 Butte On the north side of Guardian Trail, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  JEPS115709  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15766 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC38592  Navarretia leptalea Vernon Oswald 1982-7-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the Diversion Channel. Along the edge of a pool. 79 Comment
  CHSC28132  Navarretia pubescens J. D. Jokerst 1979-4-28 208 Butte Ca 200 yds nw of Rock Crk. (intersection of Rock Crk. Rd. and Cohasset Hwy.). 106 Comment
  CHSC30076  Navarretia squarrosa R. A. Schlising 1980-7-26 3921 Butte At Concow Reservoir, along Concow Road, 3.0 mi N of junction with Nelson Bar Road at Concow School. Roadside. 615 Comment
  POM65213  Navarretia squarrosa A. A. Heller, H. E. Brown 1902-5-7 5477 Butte Berry Canyon (Near Clear Creek). Comment
  SEINET10869734  Navarretia squarrosa Mary Susan Taylor 1977-6-25 Taylor 1393 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC84212  Nemacladus interior Lowell Ahart 2003-7-10 10371 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  HSC43096  Nemophila heterophylla Maralyn O'Meara 1974-4-20 3000 Butte Table Mtn. 305 Comment
  CHSC2522  Nemophila menziesii W. Fitzwater 1958-4-19 Butte Chico Canyon, Chico area. 365 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  JEPS122023  Nemophila spatulata Lowell Ahart 2014-7-4 19555 Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  CDA953  Nerium oleander D. G. Kelch 2006-8-2 6 .352 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  JEPS117526  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  CHSC26845  Nymphaea odorata M. S. Taylor 1978-6-23 1635 Butte Irrifation ditch, ca. 5 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  UC672088  Odontostomum hartwegii Herbert L. Mason 1927-5-10 3710 Butte n.e. of Oroville (Table Mt., summit of plateau); Table Mt. Comment
  CHSC38559  Olea europaea Vernon Oswald 1983-5-27 569 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  CAS-BOT-BC349986  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC45636  Oreostemma alpigenum var. andersonii Vernon Oswald 1987-5-11 2385 Butte Chico Meadows ca 1 mi N of Butte Meadows. 1292 Comment
  POM15636  Orthocarpus attenuatus A. A. Heller, H. E. Brown 1902-5-12 5543 Butte Grade between Clear Creek and Paradise. Comment
  RSA0006076  Orthocarpus brownii A. A. Heller, H. E. Brown 1902-5-6 5459 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10898077  Orthocarpus erianthus Mary Susan Taylor 1980-4-1 Taylor 2415 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  RSA727539  Orthocarpus lacerus 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
  POM297983  Orthocarpus pusillus A. A. Heller 1919-4-12 13106 Butte Cherokee mine. Comment
  SEINET10935051  Oryza sativa Mary Susan Taylor 1978-9-8 Taylor 1898 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 762 Comment
  UC1423439  Ottelia alismoides T. C. Fuller and G. D. Barbe 1977-9-20 2334 Butte e of Cherokee Canal (approx. 0.5 km s of Highway 162, drainage canal w of Biggs Rice Experiment Station) Comment
  CDA30218  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills; Southeast side Feather River, west side Table Mountain Blvd. bridge. Growing among rock outcrops just above river high water line. 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
  UCD134777  Packera eurycephala var. lewisrosei Lewis S. Rose 1967-6-11 67103 Butte 3 miles south of Pulga, Feather River Canyon. 609 Comment
  CHSC63382  Packera subnuda var. subnuda V. H. Oswald; L. P. Janeway, L. Hanson 1994-6-22 6349 Butte Meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  CHSC1178  Paeonia brownii V. Holt 1941-4-2 Butte Forest Ranch. 548 Comment
  CHSC116140  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2015-10-26 20606 Butte Strand of Lake Oroville, on west side of West Branch of Feather River,about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southest of Paradise. 207 Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC44916  Panicum miliaceum Lowell Ahart 1988-7-10 6123 Butte At the intersection of Lower Honcut Road and Palermo Honcut Highway, Honcut, about 12 miles south of Oroville. 32 Comment
  CHSC45108  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  CHSC46411  Parentucellia viscosa Lowell Ahart 1989-5-23 6242 Butte Growing near a small stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC78171  Parentucellia viscosa Lowell Ahart 2000-5-23 8385 Butte In a seepy area along a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  SEINET3450715  Parentucellia viscosa Unknown 2003-6-15 10284 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1.67 miles east of Honcut 40 Comment
  CDA6399  Parentucellia viscosa L. Ahart 2000-5-23 8385 Butte Northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC37391  Paspalum dilatatum R. A. Schlising 1980-8-31 3973 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  CHSC43749  Pectiantia breweri Vernon Oswald 1987-6-29 3038 Butte Jones Meadow Rd. e of Inskip, 0.1 mi e of the intersection of the last section of road to Jones meadow. 1734 Comment
  CHSC115190  Pectocarya pusilla Lowell Ahart 2015-4-27 20080 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  RSA715882  Pectocarya pusilla L. Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte On the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico. 488 Comment
  CHSC31462  Pellaea andromedifolia M. S. Taylor 1981-1-5 3370 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC46280  Pellaea brachyptera Vernon Oswald 1989-5-28 3786 Butte Logging road paralleling the w side of Butte Creek, 3.2 mi s of Humboldt Rd (near Butte Meadows). 1292 Comment
  UC382578  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1896 221 Butte Iron Canyon Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt Comment
  NY571185  Penstemon azureus var. azureus Mrs. C. C. Bruce 05 1898 2412 Butte Forest Ranch Comment
  NY571158  Penstemon azureus var. azureus F. W. Pennell 1940-6-5 25675 Butte Route 24, 6 miles up, along Feather River, above Oroville 91.4 Comment
  UCD124230  Penstemon heterophyllus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 13 miles east of Chico. 365 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  RSA592500  Penstemon laetus subsp. leptosepalus S. O. Mattoon 1970-6-12 17 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC49029  Penstemon laetus var. leptosepalus Vernon Oswald 1984-5-23 1202 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  NY604521  Penstemon laetus var. leptosepalus Mrs. C. C. Bruce 06 1898 2415 Butte Forest Ranch Comment
  RSA34041  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 miles from Oroville on Feather River Hwy. Comment
  UC103025  Penstemon laetus var. leptosepalus Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  NY627277  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit) 1706.9 Comment
  CAS-BOT-BC245681  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  NY627402  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  JEPS83779  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  UC1602332  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte on gravel bar by Butte Creek (Jonesville); , Jonesville 1500 Comment
  CHSC29014  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-4 2447 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC56  Pentagramma triangularis V. Holt 1934-4-1 Butte Fern Banks. 121 Comment
  UCD137730  Pentagramma triangularis L. Ahart 1974-3-18 329 Butte Along North Honocut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC77133  Pentagramma triangularis subsp. semipallida Lowell Ahart 1976-7-7 s.n. Butte Near Little North Fork of Feather River. 50 Comment
  JEPS116128  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west 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
  SEINET12121867  Perideridia bacigalupii Unknown 1985-1 5163 Butte 50 yards S of road to Forbestown Res, about 2.5 mi NE of Forbestown 884 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC40229  Perideridia kelloggii Vernon Oswald 1985-6-6 1815 Butte Humbug Rd. 0.9 mi n of Centerville Flume. 414 Comment
  SEINET12121857  Perideridia lemmonii Unknown 1985-1 5083 Butte about 2.5 mi NE of Forbestown, near Forbestown Ditch 869 Comment
  CHSC40909  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  JEPS120035  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC110389  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC37072  Persicaria maculosa L. Ahart 1982-10-6 3845 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  JEPS120160  Persicaria maculosa Lowell Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC66676  Persicaria punctata Vernon H. Oswald; Lowell Ahart 1996-7-22 8077 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common among tules on the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  CHSC101313  Petrorhagia dubia Lowell Ahart 2009-4-22 15573 Butte West side of Guardians Trail, south side of the drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC38297  Petrorhagia dubia Vernon Oswald 1983-3-14 184 Butte Upper Bidwell Park, Chico, on the north rim ca. 1500 ft w of the power lines. Along the edge of a jeep trail. 195 Comment
  JEPS120009  Petrorhagia dubia Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10497011  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4722 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UC956795  Phacelia imbricata L. Constance 1951-5-20 3379 Butte Feather River hwy near Bidwell Bar (9 mi ne of Oroville) 152 Comment
  RSA32015  Phacelia imbricata subsp. imbricata A. A. Heller 1938-5-28 15111 Butte Near the Las Plumas road on the Feather River Highway. Comment
  CHSC39104  Phacelia mutabilis R. A. Schlising 1982-7-21 4335 Butte N part of county, at E end of Philbrook Reservoir. 1691 Comment
  SEINET12765109  Phacelia purpusii Lowell Ahart 2006-7-16 12962 Butte Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows.; 0 1436 Comment
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  UCD88343  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson. Comment
  CAS-BOT-BC259047  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET3450770  Phalaris minor Unknown 2003-6-16 10286 Butte Richvale, Richvale, about 1.75 miles west, east side of Wickman Road, about 110 yards south of Richvale West Road 20 Comment
  CHSC56831  Phalaris paradoxa J. M. Lund 1980-3-3 Butte Chico Game Fish Farm, 0.2 mi west of Hwy 99, 1.0 mi north of Hwy 149. On a levee. 91 Comment
  SEINET10716718  Phalaris paradoxa A. Arthur Heller 1914-5-13 Heller 11391 Butte Nelson Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC101119  Philadelphus lewisii Lowell Ahart 2009-5-23 15723 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
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  CHSC37552  Philadelphus lewisii T. B. Devine 1977-6-5 415 Butte 2.2 mi NE of Centerville. Comment
  UC600759  Phleum pratense H. F. Copeland 1932-7-22 Butte Jonesville Comment
  CHSC35093  Phlox diffusa R. A. Schlising 1980-6-10 3670 Butte Along Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  SEINET10969166  Phlox diffusa Mary Susan Taylor 1979-7-21 Taylor 2147 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  JEPS82727  Phoradendron densum Wayne Roderick 1983-7-23 Butte near old R.R. station Magalia 762 Comment
  RSA443110  Phoradendron libocedri L. Ahart, P. Ahart 1985-9-15 5169 Butte On dry lava cap about 2 miles W of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  CAS-BOT-BC141247  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 304 Comment
  CAS-BOT-BC141248  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2624 Butte Little Bald Rock 335 Comment
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 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
  CHSC49450  Phyla nodiflora var. rosea Vernon Oswald 1987-6-5 2956 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glnn County because of shifting channel). 33 Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  CDA33497  Phytolacca americana L. Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS95155  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  RSA518693  Phytolacca americana L. Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2.5 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  UCSB45758  Pilularia americana Reisentz, Paul 1979-5-13 Butte 1 mi S of Derrick Road from Cherokee Road, 6 mi N on Derrick Road from Table Mnt. Road. Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  CHSC24440  Pinus lambertiana M. S. Taylor 1976-2-22 999 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CAS-BOT-BC78937  Pinus monticola Dr. E. B. Copeland 1929-7-17 331 Butte Above Jonesville 2000 Comment
  SBBG28894  Piperia unalascensis E. B. Copeland 1929-7-13 Butte Jonesville 1500 Comment
  CHSC109182  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side of Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS120072  Pistacia atlantica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC2026873  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  CHSC109072  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10529837  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1981 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
  SEINET10932922  Pityrogramma triangularis Mary Susan Taylor 1980-4-1 Taylor 2425 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET10932923  Pityrogramma triangularis Mary Susan Taylor 1980-3-1 Taylor 2339 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  SEINET10932925  Pityrogramma triangularis Mary Susan Taylor 1981-4-8 Taylor 3507 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET10529947  Pityrogramma triangularis var. pallida Mary Susan Taylor Taylor 984 Butte Bidwell Park, Chico. Comment
  SEINET10529970  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-4-16 Taylor 2483 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
  CHSC29739  Plagiobothrys austiniae J. D. Jokerst 1980-4-17 595 Butte Top of North Table Mt. In drainages and edges of vernal pools. 441 Comment
  CHSC34718  Plagiobothrys austiniae M. S. Taylor 1980-3-1 2338 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC38274  Plagiobothrys austiniae Vernon Oswald 1983-3-13 161 Butte Upper Bidwell Park, Chico, along Yahi Trail 100 ft. w of Parking Area P (2.0 mi e of the power lines). Along the top of a cliff. 195 Comment
  CHSC90485  Plagiobothrys austiniae Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11664 Butte Big Chico Creek Ecological Reserve. Burned area, 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
  UCD120768  Plagiobothrys austiniae Robert E. Preston 1990-3-11 594 Butte Chico, N end of Cactus Ave. 76 Comment
  UC79243  Plagiobothrys canescens Mrs. R. M. Austin May 1883 Butte Comment
  CHSC50991  Plagiobothrys cusickii Lowell Ahart; Vern Oswald 1990-7-5 6550 c Butte In a small meadow, on the north side of Humboldt Road just west of Scout Road, Butte Meadows. 1325 Comment
  SEINET10781184  Plagiobothrys fulvus Lowell Ahart 2010-5-16 Ahart 16684 Butte T20N, R4E, northeast 1/4 Section 20. Normal size plants, on dry to damp soil, open grassland, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Basalt Grassland. 372 Comment
  CHSC46345  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-28 6279 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET12328372  Plagiobothrys glyptocarpus M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5408 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  JEPS124229  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2015-3-27 19974 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  UC725292  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte along the road near Wick's Corner n Oroville Comment
  CAS-BOT-BC228254  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  JEPS120653  Plagiobothrys hispidulus Lowell Ahart 2013-10-26 19209 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC87195  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  SEINET12326940  Plagiobothrys stipitatus Unknown 1982-1 19 Butte on & near banks of Singer Ck, ca 1 mi W of Hwy 99 off Haille road, ca 12 mi N of Chico 61 Comment
  CHSC29269  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-15 3366 Butte Richvale vernal pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC87206  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10730 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  HSC100801  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte ~100 yd. W of the fence, ~1/2 mi. S of the improved parking area and Cherokee Rd., N Table Mountain, 5 1/2 (air) mi. NE of Oroville. 399 Comment
  JEPS123887  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-5-5 20137 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  SEINET10781221  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 Ahart 16819 Butte T18N, R4E, southeast 1/4 Section 21. Large size plants, on dry red rocky clay soil, bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. Foothill Woodland. 48 Comment
  UCD80157  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-13 SNFN 0080 b Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  CHSC80518  Planodes virginica Lowell Ahart 2001-4-27 8733 Butte Just northwest of the bridge across Wyandotte Creek, north of Lower Honcut Road, about 125 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  SEINET10968935  Plantago bigelovii Mary Susan Taylor 1984-4-6 Taylor 5397 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC77990  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte On the edge of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SEINET10968933  Plantago coronopus Mary Susan Taylor 1982-4-28 Taylor 4346 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
  CHSC108795  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about 1 mile (air) northeast of Chico. 143 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  UC888367  Plantago erecta A. A. Heller 1917-3-18 12668 Butte Chico Creek, lower end of Iron canyon Iron Canyon Comment
  JEPS108965  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  CHSC38584  Plantago major Vernon Oswald 1983-6-14 684 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on edge of Chico Creek. 201 Comment
  CHSC77489  Platanus X acerifolia Anna Pinsky 1997-4-30 34 Butte Upper Bidwell Park, between Bear and Salmon Hole, adjacent to Big Chico Creek, next to large rocks. Comment
  CAS-BOT-BC93160  Platanus racemosa John Thomas Howell 1975-6-15 51067 Butte Butte Creek near Chico. 60 Comment
  SEINET4890922  Platanus racemosa R. McKee 1909-1 s.n. Butte Chico Comment
  SEINET12102784  Platystemon californicus Unknown 5 s.n. Butte Chico Comment
  SEINET10464977  Plectritis ciliosa Lowell Ahart 1984-4-3 Ahart 4538 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC101299  Plectritis ciliosa subsp. insignis Lowell Ahart 2009-4-22 15604 -A Butte South side of Guardians Trail, south 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
  CHSC38754  Plectritis macrocera Vernon Oswald 1983-3-5 115 Butte Upper Bidwell Park, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  JEPS119739  Plectritis macrocera Lowell Ahart 2012-3-23 17790 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
  RSA32918  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of the Section Corner of Sections 17, 16, 20 and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  CHSC113282  Poa annua Lowell Ahart 2014-4-16 19367 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
  CHSC29055  Poa annua R. A. Schlising 1980-4-2 3539 Butte Richvale vernal pools; 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  UCD80594  Poa annua CNPS SN Foothill Team 2005-3-31 SNFN 0073 d Butte CDFG North Table Mountain Wildlife Area, North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  SEINET10968188  Poa bolanderi Mary Susan Taylor 1978-7-19 Taylor 1777 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
  CHSC113420  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC92660  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  CAS-BOT-BC244158  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte About 2.5 miles N of the town of Feather Falls, along trail to overlook to Feather Falls 600 Comment
  CHSC67524  Pogogyne zizyphoroides James D. Jokerst 1992-4-14 Butte Stone Ridge Ranch (Jon Bechtel property) E of Cohasset Hwy. and Chico Municipal Airport. Comment
  UCD73062  Pogogyne zizyphoroides 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
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC88060  Polanisia dodecandra subsp. trachysperma R. D. Fischer 2004-5-30 186 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. 1.4 miles s. of this junction. Close to rd. UTM: 10617204E 4409342N. 620 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
  CAS-BOT-BC167553  Polygala cornuta var. cornuta Clarence R. Quick 1962-6-22 62 -39 Butte Junction of Rim Road with Concow Res., Flea Valley Road Comment
  RSA713013  Polygonum arenastrum L. Ahart 2005-12-11 12521 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  CHSC94653  Polygonum aviculare Lowell Ahart 2006-9-28 13372 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS121981  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC85423  Polygonum bidwelliae John Dittes 1992-5-5 473 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  POM196100  Polygonum bistortoides E. B. Copeland 1929-7-20 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC109154  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC66903  Polygonum californicum Lowell Ahart 1996-11-11 7709 Butte In an open area in blue oaks, pasture field, about 1/2 mile west of the intersection of Avacado Avenue and Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  JEPS115374  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC204384  Polygonum californicum A. A. Heller 1914-9-23 11763 Butte hills 8 mi n Oroville Comment
  UC849190  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte e Chico; Canyon of Chico Creek Comment
  CAS-BOT-BC414369  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  SEINET10479639  Polygonum convolvulus Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4269 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CHSC113481  Polygonum douglasii Lowell Ahart 2014-7-10 19631 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC414419  Polygonum douglasii Lowell Ahart 1988-7-31 6158 Butte On the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City 1066 Comment
  CHSC33948  Polygonum minimum M. S. Taylor; L. Ahart 1981-8-16 4209 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  CHSC69111  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte Around rocks, near some steamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC600405  Polygonum minimum H. F. Copeland 1932-8-19 Butte Butte Creek Jonesville (near source) 1700 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  SEINET10479659  Polygonum parryi Mary Susan Taylor 1986-5-6 Taylor 5618 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  RSA725033  Polygonum persicaria L. Ahart 2006-8-29 13236 Butte N of the canal and parking lot 16, W of the gravel road, Gray Lodge Wildlife area (Gray Lodge Waterflow Management area). 20 Comment
  SEINET10479669  Polygonum persicaria Mary Susan Taylor 1975-10-3 Taylor 924 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  POM183168  Polygonum phytolaccifolium H. F. Copeland 1930-7-21 1326 Butte Jonesville. 1524 Comment
  UC392225  Polygonum phytolaccifolium E. B. Copeland July 1929 Butte Jonesville; along creek and near springs Comment
  JEPS110120  Polygonum punctatum Lowell Ahart 2006-8-29 13237 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 19 Comment
  CAS-BOT-BC71858  Polypodium californicum D. E. Nay 1975-4-10 28 Butte ca. 200 m SSW of Covered Bridge on hillside, 6.4 mi ESE of 99E/Skyway jct, Chico 137 Comment
  CAS-BOT-BC71873  Polypodium californicum Geo. B. Grant 1902-6-1 1026 Butte Siera Madre Mts. Comment
  SEINET10530408  Polypodium californicum Mary Susan Taylor 1981-5-7 Taylor 3633 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  SEINET10530411  Polypodium californicum Mary Susan Taylor 1980-3-19 Taylor 2394 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  JEPS120173  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC233209  Polypogon maritimus Lowell Ahart 1982-7-18 3681 Butte Along the sides and on the bottom of a small wash, Peter Ahart Ranch, ca. 1.5 miles N and 1.5 miles E of Honcut 50 Comment
  CHSC45743  Polypogon monspeliensis S. A. Conley 1986-6-16 40 Butte 2.1 mi. e of Oroville on hwy 162. Along rd. Comment
  CHSC65530  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte Trending northwest from the western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River. 929 Comment
  JEPS87565  Polystichum imbricans subsp. curtum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  RSA700216  Polystichum imbricans subsp. curtum L. Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 (air) miles west of Stirling City 629 Comment
  CHSC20257  Populus fremontii G. S. Ellmore 1972-4-28 175 Butte Big Chico Creek ca. 1.2 km. E of Five Mile Pool. Comment
  CHSC99640  Populus fremontii subsp. fremontii H. Koeth 2007-4-12 Butte Chico State Campus, along Chico Creek riparian zone south of Plumas Hall. UTM 10 598699E 4397946N. 57 Comment
  CHSC46115  Portulaca oleracea L. P. Janeway 1988-10-5 3156 Butte City of Chico; growing in cracks in asphalt near gasoline station on corner of Cohasset and Pilsbury. 60 Comment
  UCD100118  Portulaca oleracea Malcolm A. Nobs; S. Galen Smith 1949-6-29 1087 Butte Butte Creek, on road from Biggs to Princeton. Comment
  CHSC38889  Potamogeton diversifolius Vernon Oswald 1983-6-3 617 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  UCD138294  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Comment
  POM313007  Potamogeton nodosus H. L. Mason 1947-7-10 12640 Butte Sanford Slough, Butte Sink, southwest corner of Butte county. Comment
  UC1586528  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte about 2 mi e of Honcut; Joie Osgood Ranch 45 Comment
  SEINET3815018 Image available Potentilla Lewis S. Rose 1939-6-6 39231 Butte 2 miles northeast of Clipper Mills. 1173 Comment
  CHSC28675  Potentilla glandulosa M. S. Taylor 1978-7-18 1680 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 701 Comment
  CHSC61700  Potentilla glandulosa Cathy Young 1988-4-23 11 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway, and 15 yds w of Butte Creek. 67 Comment
  CHSC45739  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-27 2366 Butte Near creeklet on E slope of Bald Mtn. 1706 Comment
  CHSC45609  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-20 2079 Butte Along Hwy 70 2.1 mi NE of Pulga Bridge; N Fk Feather River near Heinz Cr. 472 Comment
  CHSC90472  Potentilla glandulosa subsp. glandulosa Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 430 Comment
  CHSC23695  Potentilla glandulosa subsp. reflexa M. S. Taylor 1976-5-5 1115 Butte Ca. 50 ft s of Hwy 70, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  JEPS121908  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 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. Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC110109  Prunus cerasifera L. P. Janeway 2012-3-21 10800 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  JEPS120056  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18071 Butte On the sides of the horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC159927  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  CAS-BOT-BC159928  Prunus emarginata F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CHSC38351  Pseudognaphalium stramineum Vernon Oswald 1983-5-27 560 Butte Upper Bidwell Park, Chico, 200 ft n of Upper Park Rd. at Diversion Dam. 121 Comment
  CHSC39276  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte Slide area along the dirt road, about 1/4 mile west of Milsap Bar. about 25 miles north-east of Oroville. 500 Comment
  CAS-BOT-BC357587  Pseudognaphalium stramineum A. A. Heller 1918-9-3 13087 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC357588  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC77415  Pseudotsuga menziesii var. menziesii Laura Bogni 1997-3-25 29 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CAS-BOT-BC148608  Ptelea crenulata Mrs. C. C. Bruce 1897-4-1 1803 Butte Forest Ranch Comment
  UC1602323  Ptelea crenulata J. E. Sowder 1933-7-7 110 Butte Camel Mound; Chico Quad. 609 Comment
  CAS-BOT-BC148607  Ptelea crenulata Mrs. Brandegee 189- s.n. Butte Marysville Comment
  CHSC60976  Pterospora andromedea Lowell Ahart 1993-6-26 7026 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek's Reservoir. 1188 Comment
  CHSC29709  Pterostegia drymarioides J. D. Jokerst 1980-4-21 626 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  SEINET10454558  Pteryxia terebinthina var. californica Mary Susan Taylor 1979-7-21 Taylor 2160 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10452826  Punica granatum Mary Susan Taylor Taylor 779 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC65568  Pycnanthemum californicum R. Banchero 1980-7-28 316 Butte Humboldt Rd at Butte Ck, 5.3 mi NE of jcn Humboldt Rd and Hwy 32. 1341 Comment
  CHSC5983  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  CHSC78245  Pyrola aphylla Lowell Ahart 2000-7-11 8573 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC73418  Pyrola asarifolia subsp. asarifolia B. Castro; L. Gehrung 1995-6-20 576 Butte Ca 4 air mi NE of Feather Falls, towards northeastern end of Watson Ridge, in moist N-trending ravine, S of sharp bend in USFS Rd 22N24. 1173 Comment
  UC709717 Image available Pyrola dentata var. apophylla H. F. Copeland 1935-7-28 Butte woods by Mickey's cabin Jonesville; Jonesville, Butte Co. 1550 Comment
  CHSC48673  Pyrola picta Vernon Oswald 1987-7-13 3104 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  UC474251  Pyrola picta E. B. Copeland 1930-7-21 1325 Butte Jonesville, (in back of hotel) Jonesville 1676 Comment
  UC474256  Pyrola picta H. F. Copeland 1930-8-26 Butte Jonesville, woods above hotel Jonesville Comment
  CAS-BOT-BC466011  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  SEINET10449176  Pyrola picta Mary Susan Taylor 1982-8-16 Taylor 4999 Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  CHSC27200  Pyrus P. Moyer 1971-2-1 84 Butte CSUC Campus. E face of Bus.-Soc. Sci. Bldg. 60 Comment
  CHSC110989  Pyrus calleryana Lowell Ahart; L. Hanson, S. Bazell, J. Guardino 2012-5-17 18073 Butte On the west side of a horse trail, about 50 ft. south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC47412  Quercus Lowell Ahart 1976-9-1 996 Butte On the west side of North Hpncut Creek, Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut. 60 Comment
  CHSC5960  Quercus M. MacArthur 1968-6-17 195 Butte Half way between Big Chico Creek and SW entrance of LS bld., Chico State College campus. 60 Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 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
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  JEPS115840  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 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
  CHSC109617  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18119 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking area, Lower Bidwell Park Chico. 76 Comment
  UC2026891  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18119 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking Area, Lower Bidwell Park, Chico. Comment
  CHSC96643  Quercus douglasii Lowell Ahart 2007-3-28 13600 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC86118  Quercus dumosa H. F. Copeland 1939-8-8 1575 Butte Humboldt Road 12 miles E of Chico Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  UCD45944  Quercus durata D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC42532  Quercus durata var. durata Lowell Ahart 1987-5-11 5618 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  UCD46123  Quercus garryana var. semota C. G. Albertus 1933-7-14 43 Butte 1/8 mile north of Fourteen Mile House. 609 Comment
  CHSC34807  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  CHSC96799  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  SFV887  Quercus kelloggii F. C. Raney 1964-10-10 s. n. Butte Sierra Nevada 10 miles northeast of Feather Falls. Comment
  CHSC25455  Quercus lobata Hayes; Warner 1977-9-12 105 Butte Growing along Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 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
  JEPS107327  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA28825  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat land in the Sacramento Valley near Durham. 69 Comment
  UC176384  Quercus wislizeni A. A. Heller 1913-3-9 10689 Butte 2 mi n Oroville Comment
  UC5836  Quercus wislizeni unknown 1472 Butte Table Mountain, near Oroville Comment
  CHSC38444  Quercus wislizeni var. wislizeni Vernon Oswald 1983-3-14 171 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  CHSC94972  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC84471  Ranunculus aquatilis var. aquatilis Vernon Oswald 1983-4-9 315 Butte Upper Bidwell Park, Chico, 50 ft n of Upper Park Rd. in the ditch draining Horseshoe Lake. 91 Comment
  CAS-BOT-BC379116  Ranunculus aquatilis var. diffusus Vernon Oswald; Lowell Ahart 1987-7-1 3072 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
  CHSC111337  Ranunculus arvensis Lowell Ahart 2012-5-2 17961 Butte Near a small drainage, about 30 yards northeast of the Easter Cross Parking Lot, Uppe Bidwell Park, about 1 mile east of Chico. 91 Comment
  SEINET7073607  Ranunculus arvensis A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC378987  Ranunculus arvensis L. L. Heinrichs 1970-5-9 s.n. Butte Biggs, East Biggs Rd., roadside in ditch E of canal Comment
  CDA3504  Ranunculus arvensis L. L. Heinrichs 1970-5-9 Butte East Biggs Road, Biggs. 0 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  CHSC46843  Ranunculus bonariensis var. trisepalus Kirsten Tarp 1983-4-3 261 Butte SW of Bangor; vernal pool. 73 Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  UC827668  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type was collected in this region by Hartweg) Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC23718  Ranunculus muricatus M. S. Taylor 1976-3-30 1041 Butte On creek bank, ca. 1/2 mi w of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  UCD96254  Ranunculus muricatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Butte Irrigation District Canal, 4 miles north of Gridley near U.S. 99E. Comment
  CHSC85402  Ranunculus occidentalis John Dittes; Josephine Guardino 1992-5-7 477 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  JEPS43466  Ranunculus occidentalis Joan O. Danielson 1966-4-6 6 Butte Cherokee Rd. 1 mi. s. on way to Table Mt. 609 Comment
  SEINET12100630  Ranunculus occidentalis L. S. Rose 1939-1 39235 Butte Strawberry Valley 1219 Comment
  UCD97034  Ranunculus occidentalis var. ultramontanus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCD149968  Ranunculus uncinatus Harry A. George 1967-4-24 s.n. Butte Table Mtn. Comment
  CAS-BOT-BC55826  Rhamnus Elmer I. Applegate 1932-4-12 7040 Butte East bank of the Sacramento River, about 2 miles west of Cana, northwest corner of Butte County Comment
  SEINET13946291 Image available Rhamnus californica A. A. Heller 1915-1 11882 Butte Canyon of Chico creek 5 miles east of Chico Comment
  UC725528  Rhamnus ilicifolia A. A. Heller 1939-4-10 15375 Butte grade above Rock Creek Comment
  SEINET10870352  Rhamnus ilicifolia Mary Susan Taylor 1979-10-12 Taylor 2241 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  RSA712802  Rhamnus rubra L. P. Janeway 2005-6-26 8434 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  CHSC38638  Rhamnus tomentella subsp. tomentella Vernon Oswald 1983-5-25 553 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Growing on the edge of an abandoned road in foothill woodland. 134 Comment
  CHSC27199  Rhaphiolepis indica P. Moyer 1971-2-1 85 Butte CSUC Campus. S face of Bus.-Soc. Sci. Bldg. 60 Comment
  CAS-BOT-BC168129  Rhus aromatica A. A. Heller 1915-3-19 11773 Butte Along Rock Creek 12 miles northeast of Chico Comment
  CAS-BOT-BC200684  Rhus aromatica Lewis S. Rose 1945-5-12 45026 Butte Richardson Springs 304 Comment
  UC1260479  Rhynchospora capitellata Lowell Ahart 1980-9-10 2618 Butte near Bean Creek Rd. (se of Little Bald Rock, ne of Oroville) 1100 Comment
  CAS-BOT-BC93277  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow. 1800 Comment
  LA205411  Ribes cereum E. B. Copeland; 1931-6-11 sn Butte Kirby's Meadow, Jonesville 1800.0 Comment
  CHSC36359  Ribes roezlii J. D. Jokerst 1982-5-19 1578 Butte One-half air miles N of Camp 18 on road to Fall River Campground. 1158 Comment
  JEPS119714  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  UC177588 Image available Ribes viscosissimum H. M. Hall 1914-7-27 9788 Butte Big Summit of Humboldt Road Sierra Nevada Mountains 2042 Comment
  CHSC36093  Ribes viscosissimum var. hallii R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4330 Butte NE part of county, N of Philbrook Res.; SE of Snow Mountain peak, on flanks of mountain. 2103 Comment
  CHSC46347  Rorippa nasturtium-aquaticum Lowell Ahart 1989-5-23 6239 Butte Along the bottom of a stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC8751  Rorippa nasturtium-aquaticum S. Chulasmai 1966-5-20 36 Butte Heloepine Spring (Upper Bidwell Park, roadside). Comment
  CHSC98952  Rorippa nasturtium-aquaticum Lowell Ahart 2008-5-21 14788 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UCD22656  Rorippa nasturtium-aquaticum Elizabeth I. Schwartz 1990-5-12 9 Butte North side of Northfork Feather River. 670 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
  JEPS103432  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC26640  Rosa californica M. S. Taylor 1977-11-10 1533 Butte In Devils Kitchen on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC50340  Rosa gymnocarpa Vernon Oswald 1990-5-14 4216 Butte Big Bald Rock located ca. 3 miles south of Brush Creek. At the picnic area. 966 Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  OBI72023  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jctn with Forbestown Rd, ca 10 airmiles ESE of Oroville, 39 deg. 29.060'N 121 deg. 21.634'w 655 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CHSC111371  Rubus armeniacus Lowell Ahart 2012-5-14 18055 Butte On dry deep soil, just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  CHSC20552  Rubus armeniacus M. S. Taylor 1975-5-24 771 Butte Lower Bidwell Park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. Comment
  CHSC52468  Rubus armeniacus L. P. Janeway 1987-5-28 2119 Butte Creeklet crossing Four Trees Rd 0.2 mi up from Hwy. 70. At edge of rd. 487 Comment
  CAS-BOT-BC156614  Rubus bifrons John Thomas Howell 1962-6-15 37453 Butte Magalia 731 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  POM366455  Rubus laciniatus L. Ahart, P. Ahart 1984-6-10 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SEINET10483577  Rubus laciniatus Mary Susan Taylor 1980-5-27 Taylor 2649 A Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC23700  Rubus parviflorus M. S. Taylor 1976-5-5 1112 Butte Along creek, ca. 5 ft s of Hwy 70, ca. 20 me ne of Oroville. Comment
  CHSC52474  Rubus parviflorus L. P. Janeway 1987-6-27 2333 Butte Along dirt rd 0.6 mi E of Ramsey Bar; just N of 'The Big Hill'. At creeklet draining under the road. 1386 Comment
  CHSC44231  Rubus pensilvanicus Vernon Oswald 1988-6-30 3541 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. 1146 Comment
  CHSC88086  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located w. side Big Chico Creek near beginning Yahi Trail. UTM: 10605280E 4402910N. 91 Comment
  RSA795262  Rubus ursinus L. Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 0.75 air miles west of Highway 32, about 9 air miles northeast of Chico. 198 Comment
  UCD89071  Rubus ursinus Lindsay Clark 2008-5-30 BWP 22 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 89 Comment
  CHSC29736  Rumex crispus J. D. Jokerst 1980-4-21 628 Butte Top of North Table Mt., N of Cherokee Rd. Occasional along edges of vernal stream courses. 381 Comment
  CAS-BOT-BC421623  Rumex crispus Lowell Ahart 1980-5-10 2233 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  UC204569  Rumex salicifolius var. transitorius A. A. Heller 1914-5-13 11396 Butte between Durham and Nelson (along Butte Creek); Butte Creek 53 Comment
  CAS-BOT-BC434070  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC98988  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-8 14710 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS113284  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  UC446426  Salix boothii E. B. Copeland 1931-6-11 Butte Kirby Meadow at outlet Jonesville 1800 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
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CHSC108813  Salix exigua var. hindsiana Lowell Ahart 2012-4-9 17828 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC111971  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the north side of the creek, on the bottom of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 280 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  UC176210  Salix laevigata A. A. Heller 1913-4-4 10694 Butte levee at Oroville Comment
  CHSC109006  Salix lasiolepis Lowell Ahart 2012-4-20 17887 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
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  JEPS119607  Salix lasiolepis Lowell Ahart 2012-4-9 17831 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129579  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10704 Butte Hills, north side of the Feather River above Oroville Comment
  CHSC65017  Salix lemmonii Vernon H. Oswald 1987-8-10 3204 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CHSC65015  Salix lucida subsp. lasiandra Vernon Oswald 1987-6-29 3032 Butte Jones Meadow Rd. e of Inskip at the West Branch of the Feather River. 1402 Comment
  CHSC7049  Salvia sonomensis S. Armantrout 1969-5-1 8 Butte Cohasset hwy. 3 mi. n of Cohasset, off road. Comment
  POM67636  Sambucus caerulea C. C. Bruce 1897-05 1821 Butte Little Chico Comment
  SEINET10465310  Sambucus caerulea Mary Susan Taylor 1978-7-21 Taylor 1809 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
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  CHSC101262  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC2821  Sanicula bipinnata David Prall 1965-3-14 6 Butte Ca. 10 yds. from edge of cliff ca. 30 yds. from Neal Rd., 1 mile east of HW 99E. Comment
  CHSC42660  Sanicula bipinnata Vernon Oswald 1985-4-16 1721 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. 121 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
  CHSC51994  Sanicula bipinnatifida Patty L. Venable 1978-4-21 4 Butte 6 mi n of Oroville, 1 1/2 mi 2 of Cherokee Road. 304 Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC42667  Sanicula graveolens Vernon Oswald 1986-6-22 2141 Butte Humboldt Summit. 1999 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
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  UCD117995  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  UC1609159  Saxifraga californica Vernon H. Oswald and Lowell Ahart 1993-3-24 5237 Butte 2 mi n of Pentz Road (e side of Dry Creek Canyon, n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  CHSC50426  Saxifraga nidifica var. nidifica Vernon Oswald 1990-6-26 4318 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the north side of the north branch of the creek. 1780 Comment
  UC1602228  Saxifraga oregana H. F. Copeland jun 1929 1240 Butte Jonesville 1524 Comment
  SEINET13945271 Image available Scandix pecten-veneris Barbara Ertter, Lowell Ahart & Jeffrey L. Strachan 1980-1 3280 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville & Marysville. T17N R4E SEC 4, NE 1/4, elev ca 100 ft 30 Comment
  CAS-BOT-BC111375  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-7 12993 Butte Big pond near river, Grey Lodge Game Refuge; Gridley Road north of Butte Sink. Comment
  CHSC36302  Schoenoplectus acutus var. occidentalis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4367 Butte Graylodge Waterfowl Refuge, s side of lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 19 Comment
  CHSC78321  Scirpus congdonii Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC40416  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC45117  Scirpus microcarpus Vernon Oswald 1987-5-25 2923 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. 68 Comment
  CHSC94357  Scirpus microcarpus Lowell Ahart 2006-7-25 13061 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS110301  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 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
  UC600701  Scirpus microcarpus H. F. Copeland 1932-7-25 Butte Jonesville Jonesville (below cabins) Comment
  CHSC28682  Scribneria bolanderi M. S. Taylor 1979-5-6 1996 A Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38854  Scribneria bolanderi Vernon Oswald 1983-3-26 212 Butte Upper Bidwell Park, Chico, on the north rim ca. 1200 ft w of the power lines. 213 Comment
  CHSC38715  Scrophularia californica subsp. floribunda Vernon Oswald 1983-4-1 253 Butte Upper Bidwell Park, Chico, s of the creek and e of the footbridge near the 4th green of the Golf Course. 91 Comment
  CHSC43849  Scutellaria siphocampyloides B. Castro 1987-5-18 108 Butte Approx. 9 mi ne of Chico ca 1/2 mi e of Hwy 32. 426 Comment
  RSA445330  Scutellaria siphocampyloides M. M. Boney 1897-1 1724 Butte [No location information on label.] Comment
  SEINET13947867 Image available Scutellaria siphocampyloides A. A. Heller 1917-1 12814 Butte Butte Meadows; 4200 ft alt. 1280 Comment
  CHSC109160  Sedella pumila Lowell Ahart 2012-5-12 18937 Butte On the south side of Humboldt Trail, about 200 yards east of Guardian Trail, about 1/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-1/2 miles (air) northeast of Chico. 361 Comment
  CHSC90601  Sedella pumila Steven H. Roth 1980-3-15 6 Butte 50 m s Butte Creek at the Honeyrun bridge, 10 km se of Chico. Comment
  SFV1575  Sedella pumila M. L. Vincent 1962-4-15 192 Butte Sierra Nevada Skyway. 4 miles west of Paradise, overlooking Butte Canyon. 215 Comment
  RSA256645  Sedella pumila David Johnson 1974-4-20 48 Butte Table Mt. Comment
  SEINET10530448  Selaginella Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 A Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  CHSC96138  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  RSA726781  Selaginella wallacei Lowell A. Ahart 2007-2-24 13584 Butte Peter Ahart Ranch, about 3.4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  SEINET10471204  Selaginella wallacei Lawrence P. Janeway 1984-9-29 Janeway 1176 Butte Brush Creek Quad, T21N R6E NW 1/4 of sec. 35, 1850 feet. Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). "Feather Falls Scenic Area". On N-facing rock faces (granite), partially shaded, with mosses. 565 Comment
  CHSC76039  Senecio aronicoides G. F. Hrusa; T. D. Wilfred 1997-5-7 13741 Butte Sierra Nevada. At summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 750 Comment
  CHSC89481  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-7-6 212 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  SEINET10475269  Senecio layneae Lowell Ahart 1985-1 Butte Comment
  CDA34707  Senecio sylvaticus L. Ahart 2010-5-2 16707 Butte On both sides of Yahi Trail, east of the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico. Comment
  CHSC113408  Senecio triangularis Lowell Ahart 2014-7-13 19663 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC61298  Senecio triangularis Lowell Ahart 1993-8-8 7148 Butte On the bottom of a stream, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of Sly Creek Dam. 1097 Comment
  UC179694  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte Chico Chico meadows 1219 Comment
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  SEINET10904979  Senecio vulgaris Mary Susan Taylor 1973-1 Taylor 41 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10612366  Sequoia sempervirens Metcalf 1981-4-10 METCALF 6 Butte Cultivated. Leaves green with tree approximately 100 feet tall. Small population, just north of highway 99 along Big Chico Creek, within Chico. North side of Chico Creek. White Oak Forest. Loam. 30 Comment
  CHSC86849  Sericocarpus oregonensis L. P. Janeway; Gavin Blosser 2003-8-27 7970 Butte Northern Sierra Nevada Foothills. East side of McCabe Creek arm of South Fork Feather River arm of Lake Oroville; 1.0 km (air) south-southwest of the southern end of Enterprise Bridge. 282 Comment
  CHSC43671  Sesbania punicea Vernon Oswald 1987-6-12 2998 Butte South side of the mouth of Big Chico Creek at the Sacramento River. 35 Comment
  CAS-BOT-BC263235  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  CHSC49573  Setaria sphacelata Vernon Oswald 1988-6-8 3357 Butte Hamilton Rd. bordering the south side of Thermalito Afterbay, ca. 0.2 mi e of Hwy 99. In a ditch along the road. 32 Comment
  CAS-BOT-BC240191  Setaria viridis John Thomas Howell 1959-9-20 34679 Butte Eastern outskirts of Oroville 60 Comment
  CHSC102819  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC35323  Sherardia arvensis M. S. Taylor; K. Tharp 1982-4-8 4286 Butte Immediate vicinity of Oroville Dam Visitors Center, Oroville. 365 Comment
  CDA6646  Sherardia arvensis L. Ahart 2002-5-7 9643 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  HSC43132  Sherardia arvensis Maralyn O'Meara 1974-4-20 286 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  SEINET10448357  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 A Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  UC725657  Sidalcea calycosa subsp. calycosa A. A. Heller 1942-5-17 16471 Butte on Chico Oroville Road about a half mi w Wick's Corner; w of Wick's Corner on Chico Oroville Road Comment
  CHSC10820  Sidalcea diploscypha Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33519  Sidalcea glaucescens R. A. Schlising; R. Preston, R. Banchero 1981-7-14 4145 Butte NE Butte County, 0.3 mi SW of Humbug Summit. 1981 Comment
  UC1124956  Sidalcea glaucescens P. L. Johannsen 1936-7-21 958 Butte 1 1/2 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  SEINET10937544  Sidalcea malviflora subsp. celata Mary Susan Taylor 1978-7-21 Taylor 1834 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  NY43505  Sidalcea oregana S. Bianco 1995-10-19 1044 Butte E side of Concow Rd, ca. 0.8km S of Hoffman Rd, on S side of creek 760 Comment
  POM219179  Sidalcea oregana subsp. spicata H. F. Copeland 334 Butte Jonesville. 1524 Comment
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CAS-BOT-BC213190  Sidalcea robusta A. A. Heller; H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  NY222070  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus douglasii belt Comment
  CAS-BOT-BC384466  Silene antirrhina Lowell Ahart 1985-5-31 5032 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
  UC128807  Silene bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC852813  Silene californica Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  POM100876  Silene californica C. C. Bruce 1897-05 1875 Butte Forest- Ranch. Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC33521  Silene douglasii R. Schlising 1981-6-28 4114 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on Table Mountain. 1828 Comment
  CHSC118500  Silene laciniata subsp. californica L. P. Janeway 2016-5-9 11955 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC214  Silene laciniata subsp. californica R. M. Staley 1952-7-14 Butte Butte Creek. Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CHSC94273  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  CHSC31651  Sinapis arvensis L. Ahart 1978-4-2 1623 Butte In farmed fields (grain). Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42698  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC101145  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC547  Sisymbrium officinale R. Massey 1931-5-25 Butte CSC Campus. 57 Comment
  CHSC42428  Solanum americanum Lowell Ahart 1987-5-27 5687 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
  CHSC97398  Solanum americanum Robert Fischer 2006-6-27 1004 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS124332  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET12327003  Solanum parishii Unknown 1984-1 9 Butte ca 2 mi S of Concow Reservoir & 25 yds N of Deadwood Creek, 75 yds E of Concow Rd 457 Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CHSC30665  Solidago canadensis subsp. elongata M. S. Taylor; R. Schlising 1980-7-6 3072 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  CHSC36965  Solidago elongata M. S. Taylor 1982-8-16 4988 Butte S end of Stirling City, along both sides of the Skyway. 1036 Comment
  LA203953  Solidago elongata E. B. Copeland; 1930-8-27 499 Butte Jonesville 1500.0 Comment
  CHSC92062  Solidago velutina subsp. californica Lowell Ahart 2005-8-19 12335 Butte In a farmed field, along a small drainage, about 1/8 mile west of Dunstone Drive, about 1 1/2 miles north and 2 7/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 54 Comment
  SEINET10474960  Soliva pterosperma Mary Susan Taylor 1980-4-6 Taylor 2440 A Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 Comment
  JEPS124111  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 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
  CAS-BOT-BC235259  Sorghum bicolor John Thomas Howell 1951-8-19 28152 Butte North Fork Feather River 243 Comment
  CHSC27290  Sorghum halepense P. Moyer 1972-6-5 212 Butte CSUC campus. 50 ft. from Gus Manolis Bridge, s side of Chico Ck. 60 Comment
  UCR219097  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15574 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CAS-BOT-BC389946  Spergula arvensis Lowell Ahart 1988-5-12 5989 Butte About 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 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
  CHSC44488  Spergula arvensis subsp. arvensis Lowell Ahart 1988-5-12 5989 Butte Pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CDA3448  Spergula arvensis subsp. arvensis L. Ahart 2000-5-23 8388 Butte About 100 yards southeast of the barn, about 1/4 mile northeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CDA19178  Spergularia rubra Gary Vercruse, Riley 2001-5-21 PDR 1170768 Butte Sacramento Valley; 10010 Jones Ave, Durham. 0 Comment
  CHSC34818  Spergularia rubra M. S. Taylor 1981-5-27 3804 A Butte In path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 792 Comment
  JEPS94310  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  RSA724890  Spiraea douglasii L. Ahart 2006-8-15 13184 Butte 10 yards W of Willow Creek. About 100 yards SE of the cabin. About 3/4 air mile NW of Jonesville. About 5 air miles NE of Butte Meadows. 1570 Comment
  LA208284  Spiraea splendens E. B. Copeland; 1931-6-19 649 Butte Jonesville, at the Summit 640 Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  UC1609424  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC43646  Stachys pycnantha B. Castro 1987-9-12 219 Butte At w edge of Butte Ck, ca 24 mi ne of Chico via Hwy 32, Garland Rd and the Butte Ck Trail. On cliff ca 50' from water's edge. 585 Comment
  JEPS87170  Stellaria borealis subsp. sitchana Lowell Ahart 1992-6-26 6779 Butte about 0.5 mi nw Merrimac (on e side of Rogers Cow Camp) 1219 Comment
  CHSC45266  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow. On the bed of the creek. 1889 Comment
  CHSC34185  Stellaria crispa L. Ahart 1981-9-15 3165 Butte Along banks of French Creek, below the swamp and where the road forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC26847  Stellaria longifolia M. S. Taylor; M. Hayes 1978-6-24 1637 Butte On Ernies Island in Butte Creek at its jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  RSA0116103  Stellaria longifolia Lowell A. Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1609331  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte about 6 air mi ne Feather Falls (e side of Fall River, e of campgrounds on large gravel bar along Fall River); Fall River 1036 Comment
  JEPS119631  Stellaria media Lowell Ahart 2012-6-14 18186 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  UCD99392  Stellaria media A. A. Heller 1914-3-28 11242 Butte in gardens and lawns at Chico and in cultivated fields in the Sacramento valley. Comment
  CHSC61210  Stellaria nitens Vernon H. Oswald; Lowell Ahart 1993-3-24 5235 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  UC1594583  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  UC478522  Stellaria obtusa E. B. Copeland 1931-7-19 636 Butte Butte Creek Jonesville (Jonesville) 1500 Comment
  CHSC59509  Stephanomeria elata Lowell Ahart 1992-9-9 6918 Butte Below the high water line of Lake Oroville, about 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  UC426995  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville 1550 Comment
  CHSC84403  Stephanomeria paniculata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the east side of Encina Grande Road, just south of a small branch of Canyon Creek, about 1 mile west of Oroville Quincy Highway, about 2 1/2 miles (air) southwest of Berry Creek. 632 Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10508641  Stipa columbiana Mary Susan Taylor 1977-8-17 Taylor 1481 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  SEINET10480708  Streptanthus Mary Susan Taylor 1980-7-6 Taylor 3074 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
  SEINET10480711  Streptanthus Mary Susan Taylor 1981-5-21 Taylor 3791 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SEINET10841528  Streptanthus campestris Lowell Ahart 1983-8-16 Ahart 4283 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CDA25173  Streptanthus diversifolius L. Ahart 1998-6-3 7967 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC42200  Streptanthus diversifolius Victoria Lorber 1986-4-1 Butte Table Mountain, 6.4 mi n of Oroville on Cherokee-Table Mtn Road. 243 Comment
  UC725557  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  CAS-BOT-BC86997  Streptanthus diversifolius Richard Johnson 1950-4-16 s.n. Butte Table Mountain, 5 miles north of Chico. Comment
  CHSC35998  Streptanthus longisiliquus R. E. Preston 1982-6-23 314 Butte On banks of roadcut and at sides of road, ca. 2 mi sse of Stirling City. 944 Comment
  CHSC95057  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  HSC96689  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte N High Sierra Nevada, W side of Coutolenc Rd., 150 m N of Skyway at 'Magalia Serpentine 713 Comment
  JEPS118207  Streptanthus polygaloides Dean W. Taylor 2004-6-17 19112 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  UCD116277  Streptanthus tortuosus R. E. Preston 1982-4-25 267 Butte Cape Horn, w fork of Lake Oroville, 4.5 miles SE of Paradise. 426 Comment
  UCD116282  Streptanthus tortuosus Robert E. Preston 1984-4-21 433 Butte 8 km north of Oroville, North Table Mountain. 396 Comment
  RSA500420  Subularia aquatica var. americana Vernon H. Oswald, L. Ahart 1989-8-22 3953 Butte Summit Lake on the N slope of Snow Mountain, ca. 4 miles (air) SE of Jonesville. 1890 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
  JEPS7824  Swertia albicaulis var. nitida Rimo Bacigalupi with Richard Hauke and Georgie Bacigalupi 1954-7-15 4720 Butte 0.3 mi e Nimshew (along Nimshew road, 1.1 mi below its junction with main Magalia-Tirling road) 792 Comment
  SEINET10784830  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 Ahart 13889 Butte T22N, R4E, southwest 1/4 Section 21. On dry dark soil, on the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. Foothill Woodland. Comment
  CAS-BOT-BC234615  Symphoricarpos mollis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC11856  Symphoricarpos mollis E. B. Copeland 1930-7-7 479 Butte Jonesville. 1600 Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCSB63840  Symphyotrichum spathulatum Ahart, Lowell 1997-8-1 Butte Little Kinshew Creek, in Snow Meadow, about 1/4 mile east of table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  JEPS115151  Symphyotrichum subspicatum Lowell Ahart 2009-11-19 16553 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
  CHSC31613  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1977-9-24 1589 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10507799  Taeniatherum asperum Mary Susan Taylor 1980-5-24 Taylor 2741 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC221936  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37422 Butte 5 miles west of Oroville Comment
  SEINET10454608  Tauschia hartwegii Mary Susan Taylor 1975-3-3 Taylor 404 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland.