Search Results — 2000 specimen records retrieved (1600 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  CHSC45838  Abies concolor Lowell Ahart 1984-4-26 4812 Butte South fork of Feather River, near the new bridge, about 1 mile north of Golden Trout Crossing, about 10 miles east of Feather Falls. 975 Comment
Read comments
Apr 30 2014
  CHSC88614  Abies concolor H. Gray 2003-6-3 Butte Plumas National Forest. Parking Lot, Bald Rock Trail. 792 Comment
  UC1192282  Abutilon theophrasti Herbert L. Mason and Verne Grant 1946-9-4 13105 Butte Colusa Gun Club Butte Sink Comment
  CHSC111733  Acer circinatum Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 B Butte About 50 yards south of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  UC600416  Acer glabrum var. glabrum H. F. Copeland 1932-6-29 Butte at the summit Jonesville Comment
  JEPS119586  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. Comment
  CAS-BOT-BC334156  Acer negundo var. californicum Lewis S. Rose 1937-6-10 37378 Butte 7 miles W of Honcut along Feather River 22 Comment
  CAS-BOT-BC210634  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CDA13244  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13091 Butte Plumas National Forest; Occasional perennial in open sites at edges of and in understory of conifer forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA13870  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-7 13728 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC49579  Achnatherum occidentale subsp. californicum Vernon Oswald 1985-7-2 1873 Butte Hwy 32 2.3 mi s of Lomo. 1133 Comment
  CHSC116583  Acmispon americanus var. americanus L. P. Janeway 2015-7-20 11804 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC26746  Acmispon americanus var. americanus M. S. Taylor; M. Hayes 1977-8-16 1440 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC886  Acmispon americanus var. americanus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  SBBG121600  Acmispon argophyllus var. fremontii L. Ahart 2007-5-29 13937 Butte E side of Bald Rock Dome on W side of the Dome Trail, ca. 2 mi (air) NE of Big Bald Rock, ca. 16 mi (air) NE of Oroville 585 Comment
  CHSC28156  Acmispon brachycarpus R. J. Goedl 1979-4-14 10 Butte Ca. 6 mi n of Oroville 0.5 mi w of Cherokee Mountain Road. 365 Comment
  CHSC45908  Acmispon brachycarpus Lowell Ahart 1981-4-24 2786 Butte Growing near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 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
  CHSC112732  Acmispon nevadensis var. nevadensis Lowell Ahart 2013-11-17 19269 Butte Steep hillside, about 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC38503  Acmispon wrangelianus Vernon Oswald 1983-4-25 384 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  SD1731  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville, moist glades and thickets 1500 Comment
  SEINET3082407  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-1 363 Butte Jonesville. 1500 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  JEPS108865  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 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
  CHSC3425  Adiantum aleuticum Judy Potter 1966-3-7 113 Butte Honey Run Road, 2.5 miles south The Skyway. Comment
  CHSC31529  Adiantum jordanii L. Ahart 1978-3-19 1616 Butte Along North Honcut Creek. 3 mi ne of Honcut. 65 Comment
  SEINET10867068  Adiantum jordanii Mary Susan Taylor 1979-3-20 Taylor 1942 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC109864  Aegilops triuncialis L. P. Janeway 2012-6-7 10858 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  HSC93184  Aegilops triuncialis L. Ahart 1995-5-30 7581 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  CAS-BOT-BC202591  Aesculus californica Lowell Ahart 1983-6-26 4112 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC99665  Aesculus californica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  CHSC50541  Agoseris aurantiaca Vernon Oswald 1990-7-3 4344 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC44185  Agoseris grandiflora V. Oswald; L. Ahart 1988-7-13 3576 Butte Road to High Lakes E of Philbrook Resevoir. 1859 Comment
  CAS-BOT-BC22963  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  UC600721  Agoseris retrorsa E. B. Copeland 1931-7-12 Butte (Ridge between Jones and Willow Creeks) Jonesville 1700 Comment
  SEINET10506826  Agropyron Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  CHSC116333  Agrostis avenacea Lowell Ahart 2015-10-20 20564 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  SEINET10855011  Agrostis avenacea Lowell Ahart 2008-5-21 Ahart 14779 Butte T20N, R6E, southwest 1/4 Section 33. Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 1.4 mile northwest of the Ponderosa Dam. 246 Comment
  JEPS95146  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville Oroville 51 Comment
  CAS-BOT-BC127365  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS120097  Agrostis exarata Lowell Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10790024  Agrostis exarata Lowell Ahart 1990-5-21 Ahart 6475 Butte 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. Spike Bentgrass. 30 Comment
  UC1564752  Agrostis idahoensis V. Oswald and L. Ahart 1989-8-15 3944 Butte Soda Ridge Road 1.4 mi w of its junction with Coon Hollow Road (ca 1.2 mi (air) n of Philbrook Reservoir) 1752 Comment
  SEINET10507107  Agrostis microphylla Mary Susan Taylor 1980-5-27 Taylor 2710 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  UC1594697  Agrostis perennans Lowell Ahart 1992-7-21 6809 Butte about 2 (air ) mi ne Philbrook Reservoir (s side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC59037  Agrostis scabra Lowell Ahart 1992-7-21 6809 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  SEINET10790393  Agrostis stolonifera Mary Susan Taylor 1978-7-21 Taylor 1796 Butte Vicinity of Lake Madrone at Oroville-Quincy Hwy turnoff, 10 mi NE of Oroville; Yellow Pine forest. Comment
  RSA701233  Agrostis variabilis L. Ahart 2004-8-9 11358 Butte on the very upper reaches of Jackson Creek, on the northeast side of English Mountain, about 2 3/4 miles east of the east end of Bowman Lake. 2264 Comment
  CHSC31712  Aira caryophyllea L. Ahart 1975-5-12 773 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10507041  Aira caryophyllea Mary Susan Taylor 1976-3-30 Taylor 1043 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 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
  CHSC100052  Albizia julibrissin Lowell Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  CHSC43286  Alisma triviale Lowell Ahart 1987-9-4 5883 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC66451  Alisma triviale Vernon H. Oswald; Lowell Ahart 1996-6-10 7764 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  UCD137977  Alisma triviale P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unknown. Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  POM169472  Allium amplectens E. B. Copeland 1903-5-2 2871 Butte Chico Comment
  SBBG40363  Allium amplectens J. Ingram 1960-4-6 299 Butte Neal Rd, ca. 6 mi S of Paradise Comment
  SBBG128030  Allium amplectens L. Ahart 2010-5-23 16729 Butte W side of Guardians Trail, N of the small drainage, ca. 50 yards N of Pine Trail, ca. 0.25 mi W of Hwy 32, ca. 9 mi NE of Chico 429 Comment
  SEINET10839457  Allium amplectens Mary Susan Taylor 1975-6-30 Taylor 822 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  UCD138465  Allium amplectens L. Ahart 1978-4-13 1634 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC465445  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC135818  Allium jepsonii B. Castro 1993-7-13 487 Butte Ca 2.5 mi SSW of Big Bar Mtn, on gentle SSE-facing slope on the N side of USFS rd 22N84, on serpentine outcrop which extends for 0.2 mi along the road. 944 Comment
  CHSC62604  Allium jepsonii B. Castro 1993-8-3 491 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  JEPS109801  Allium jepsonii Dean W. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CHSC23661  Allium obtusum var. obtusum M. S. Taylor 1976-4-24 1072 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC12108  Allium peninsulare J. M. Pitts 1972-4-28 180 Butte Locally abundant on bank at target end of police pistol range, Bidwell Park, Chico. 152 Comment
  CHSC36949  Allium peninsulare P. D. Nelson 1979-4-25 Butte Ca 150 ft s of Bidwell Park Rd at Salmon Hole, ca 9 mi e of California State University Chico. Ca. 30 ft n of Big Chico Creek. 152 Comment
  CHSC54115  Allium peninsulare var. peninsulare Vernon H. Oswald; Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  SEINET10471993  Allium platycaule Mary Susan Taylor 1978-7-18 Taylor 1709 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC108168  Allium sanbornii var. sanbornii L. P. Janeway 2011-8-17 10654 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 1.0 km east-southeast of the top. 712 Comment
  SD588  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville, in wet brush. 1500 Comment
  UC1562329  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1990-6-27 4328 Butte 0.3 mi. w.-n.w. Buckeye (site) (Oro-Quincy Hwy. at s. edge of Walker Plains) 1536 Comment
  CAS-BOT-BC170913  Alnus rhombifolia Lowell Ahart 1985-1-27 4837 Butte At Kunkle Res., about 2 miles S of Paradise 550 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  CHSC49504  Alopecurus aequalis Vernon Oswald; Lowell Ahart 1987-7-1 3060 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CDA28199  Alopecurus carolinianus C. Wick 1986-4-2 s.n. Butte 0.5 mi E of Richvale. Richvale East/Erickson Rd; 0 Comment
  UCD14592  Alopecurus carolinianus Carl M. Wick 1986-4-2 s.n. Butte California, Butte Co.; 1/2 mile east of Richvale, Richvale East/Erickson Road; Comment
  UCD55916  Alopecurus saccatus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  JEPS119522  Amaranthus albus Lowell Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  JEPS124159  Amaranthus albus Lowell Ahart 2015-11-7 20615 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC51248  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1562275  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  CDA42839  Amaranthus deflexus L. Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Comment
  UCSB64012  Amaranthus deflexus Ahart, Lowell 1982-7-10 Butte Near a small building in the parking area at the Gray Lodge check in station, about 12 miles south-west of Gridley 30 Comment
  CHSC78367  Amaranthus palmeri Lowell Ahart 2000-7-23 8605 Butte On road gravel and in the prune orchard, on the west edge and side of the Midway, north of Butte Creek, about 2 1/2 miles south of Durham. 45 Comment
  CHSC85142  Amaranthus rudis John Dittes 2003-10-8 847 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  JEPS95988  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte northwest of Parrott Landing; Chico, east side of the Sacramento River; large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  JEPS124126  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte About 100 yards south of Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC46399  Amelanchier pallida Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CAS-BOT-BC142956  Amelanchier utahensis Lowell Ahart; Vernon Oswald 1987-8-5 3193 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug Roads 1813 Comment
  CHSC48841  Amelanchier utahensis Vernon Oswald; Lowell Ahart 1987-8-5 3193 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug roads. 1813 Comment
  RSA697051  Ammannia coccinea L. Ahart 2003-6-23 10300 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  SEINET12327001  Amsinckia Unknown 1984-1 10 Butte ca 0.5 mi E on Wildwood Ave, 500 ft N from Wildwood, E side of road 70 Comment
  UC726941  Amsinckia A. A. Heller 1941-4-19 16068 Butte n side of Sandy Gulch (Richardson Springs Road; at places about Chico); Chico Comment
  CHSC103690  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SEINET10969123  Amsinckia intermedia Mary Susan Taylor 1981-4-14 Taylor 3527 Butte T21N R3E se/ne sec 36, Cherokee quad. Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 450 ft. 137 Comment
  UC614660  Amsinckia intermedia L. Constance, J. L. Morrison 1938-4-30 2178 Butte 8 mi n Chico (between Big and Little Chico Creeks); Sierra Nevada foothills 609 Comment
  CHSC37418  Amsinckia menziesii Nancy A. Stevens 1971-4-23 19 Butte Found ca 30 ft. s of Highway 32 and ca 2.5 mi w of Forest Ranch 701 Comment
  UC463031  Anagallis arvensis E. B. Copeland 1931-7-20 Butte Albertine 1700 Comment
  CAS-BOT-BC45251  Ancistrocarphus filagineus A. A. Heller; H. E. Brown 1902-5-12 5535 Butte Grade between Clear Creek and Paradise Comment
  UC641680  Andropogon glomeratus var. pumilus G. L. Stebbins Jr. 1939-7-5 2892 Butte 3 mi e Oroville 152 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC44915  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CAS-BOT-BC249065  Anthriscus caucalis George K. Helmkamp; E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC108828  Anthriscus caucalis Lowell Ahart 2012-4-17 17871 -A Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 Comment
  RSA518695  Antirrhinum leptaleum L. Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 0.25 mile south-west of the Enterprise Bridge across Lake Oroville. 267 Comment
  JEPS83401  Antirrhinum vexillocalyculatum subsp. intermedium David M. Thompson 1986-6-25 537 Butte 2.0 mi s Hwy. 70 on Dark Creek Road (e of Old Yankee Hill, on Dark Creek Road (the old Hwy 70 grade before the creation of Lake Oroville)); Big Bend Mt. Quad. (15', 1948) 441 Comment
  CHSC1535  Aphanes occidentalis M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC65578  Aphyllon epigalium subsp. epigalium L. P. Janeway 1995-6-1 4765 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC12928  Aphyllon purpureum K. D. Cox 1974-4-15 187 Butte Horse Trough, about 2 mi. N of Chico Airport, on Cohasset Rd. On roadside bank. Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  RSA726810  Apocynum androsaemifolium L. Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at 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
  UC175568  Apocynum cannabinum A. A. Heller 1913-6-4 10779 Butte Table Mt. Olive Ranch n. of Oroville; Table Mt. Olive Ranch Comment
  CAS-BOT-BC392113  Aquilegia formosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC45032  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 224 Butte E of Powellton. 975 Comment
  CHSC52679  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 300 Butte E part of county near Mt. House. 1085 Comment
  SEINET10536205  Aquilegia formosa var. truncata Mary Susan Taylor 1978-7-18 Taylor 1718 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC90946  Arabidopsis thaliana Lowell Ahart 2005-4-18 11742 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC17268  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 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
  SFV8784  Arbutus menziesii F. Polach 1967-4-22 12 Butte Feather Falls, 1.5 miles from railroad along Lumpin Road. 915 Comment
  SEINET10492815  Arceuthobium abietinum Mary Susan Taylor 1977-8-17 Taylor 1486 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
  CHSC4728  Arceuthobium occidentale R. Carter 1966-6-12 423 Butte Found 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 1/8 mi. W off Feathervale; Growing parasitically on Pinus sabiniana, 50 yds W of house. 243 Comment
  RSA632987  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27477 Butte Cohasset. 630 Comment
  RSA632994  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27466 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  SEINET10841467  Arctostaphylos manzanita Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3374 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  RSA755635  Arctostaphylos manzanita subsp. manzanita L. Ahart, John Dittes, Steve Green 2009-1-17 15468 Butte North side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  CAS-BOT-BC24251  Arctostaphylos mewukka Lowell Ahart 1985-2-17 4840 Butte Near Kunkle Res., about 2 mi. s. of Paradise. 550 Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  CHSC109062  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. 397 Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  UC481538  Arctostaphylos nevadensis H. F. Copeland 1930-7-28 Butte along So. Willow Creek Jonesville 1828 Comment
  SBBG60044  Arctostaphylos patula E. B. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville Comment
  UCD52197  Arctostaphylos viscida Joseph M. DiTomaso 1976-5-23 459 Butte California, Butte County: Lake Oroville, peninsula on south side. 274 Comment
  SEINET11989218  Arctostaphylos viscida J. T. Howell 1975-1 51084 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47378  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51098 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48253  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico. Comment
  CAS-BOT-BC48291  Arctostaphylos viscida subsp. viscida John Thomas Howell; Gordon H. True 1967-5-9 42236 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC10635  Arctostaphylos viscida subsp. viscida Lowell Ahart 1968-3-3 Butte Swede's Flat Road. 304 Comment
  CHSC21776  Arctostaphylos viscida subsp. viscida Robert A. Schlising 1974-9-17 3158 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  CHSC50037  Arctostaphylos viscida subsp. viscida Lowell Ahart 1990-3-9 6412 Butte 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
  UCD34842  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte Butte County, 3.5 miles east of Honcut along La Porte road. Comment
  CAS-BOT-BC400420  Aristolochia californica Ira L. Wiggins 1925-1-31 1378 Butte Stream bank of Sandy Gulch Creek at junction with Chico Creek 2 miles below Chico Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UC600519  Arnica dealbata H. F. Copeland 1931-6-10 Butte between Willow and Colby Creek; Jonesville Comment
  CAS-BOT-BC295842  Arnica dealbata C. R. Quick 1951-6-9 51 -99 Butte Big Bar Mt. ridge Comment
  CAS-BOT-BC90284  Artemisia douglasiana Lowell Ahart 1987-7-3 5760 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 890 Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC94100  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  SEINET10475948  Asarum hartwegii Mary Susan Taylor 1980-9-12 Taylor 3334 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC20544  Asclepias cordifolia M. S. Taylor 1975-6-30 825 Butte Scattered on s side of Cohasset Rd, ca. 10 ft. s of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  UC600678  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UCD121248  Asclepias cordifolia L. Ahart 1977-4-16 1309 Butte Near Honcut. 50 Comment
  CHSC44270  Asclepias eriocarpa Vernon Oswald 1988-6-4 3355 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 67 Comment
  CHSC66660  Asclepias fascicularis Vernon H. Oswald; Lowell Ahart 1996-7-22 8088 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  RSA0115080  Asclepias speciosa Lowell A. Ahart 2013-6-11 18799 Butte About 10 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 738 Comment
  CHSC23658  Aspidotis californica M. S. Taylor 1976-4-24 1073 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  SEINET256391  Aster chilensis var. medius Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch. about 1 1/2 miles north and 3 miles east of Honcut., about 12 miles south of Oroville. 55 Comment
  CHSC44493  Astragalus pauperculus Lowell Ahart 1988-5-12 5990 Butte Open pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  JEPS94925  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte about 1/4 mi e Table Mountain (on e side of creek, where basalt is eight sided, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 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
  CAS-BOT-BC17448  Athysanus pusillus A. A. Heller 1915-2-26 11765 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC44481  Athysanus pusillus Lowell Ahart 1988-3-28 5948 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
  UC1594560  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  CHSC34770  Atriplex lentiformis L. Ahart 1981-11-6 3217 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  RSA592536  Atriplex lentiformis subsp. lentiformis S. O. Mattoon 1976-8-13 3 Butte Grey Lodge National Wildlife Refuge, West of Gridley. 46 Comment
  CHSC34050  Atriplex serenana L. Ahart 1981-7-26 3007 Butte Along edge of dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that lead to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC176603  Atriplex serenana var. serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito 73 Comment
  CHSC26655  Atriplex triangularis M. S. Taylor 1977-11-10 1524 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in drying creek, ca. 23 mi s of Chico. 30 Comment
  CHSC104838  Avena barbata Lowell Ahart 2010-5-23 16727 Butte On both sides of Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 413 Comment
  CHSC26768  Avena fatua P. Moyer 1972-4-9 168 Butte CSUC Campus. 60 Comment
  UC577598  Avena fatua C. G. Albertus 1933-6-6 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  CHSC2123  Avena sativa H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. Chico. 57 Comment
  CHSC95989  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC55145  Bacopa eisenii Lowell Ahart 1991-10-25 6732 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  UC172377  Balsamorhiza sagittata unknown Butte Jonesville Comment
  CHSC111129  Berberis Lowell Ahart 2012-6-21 18200 Butte Lawn, on the south side of the paved park road, weest of the entrance from Woodland Avenue, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC75548  Berberis dictyota Lowell Ahart 1983-4-14 3935 Butte About 0.75 mile west of the Forbestown Reserve, about 3.25 miles northeast of Forbestown. 450 Comment
  CDA36621  Bergia texana L. Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. Comment
  CDA15321  Bergia texana D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  HSC93350  Bergia texana L. Ahart 1995-7-15 7594 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CAS-BOT-BC102068  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Along French Creek 1300 Comment
  SEINET10473664  Bidens frondosa Mary Susan Taylor 1978-9-8 Taylor 1877 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC44048  Bistorta bistortoides L. P. Janeway 1987-6-26 2322 Butte SW end of Logue Meadows. 1325 Comment
  NY31005  Blennosperma californicum H. E. Brown 1897-3-3 146 - Butte Near Clear Creek 53.3 Comment
  SEINET10474476  Blennosperma nanum Mary Susan Taylor 1973-1 Taylor 62 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10904923  Blennosperma nanum Mary Susan Taylor 1974-3-5 Taylor 77 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC31952  Boechera breweri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1045 Butte Top of Humboldt Peak, ca. 400 meters NE of summit along hogback ridge. 2133 Comment
  CHSC35650  Boechera breweri R. E. Preston 1982-4-7 235 Butte Cape Horn, ca. 4 mi sw of Paradise. On cliff. 335 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  SEINET10939932  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4120 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  CAS-BOT-BC28203  Bolboschoenus glaucus Verne Grant; Herbert L. Mason 1956-8-7 12291 Butte Gridley Road north of Butte Sink Comment
  CHSC48891  Boykinia occidentalis Vernon Oswald 1985-9-5 1939 Butte Forbestown Resevoir Rd. 1.4 mi ne of Forbestown Rd. 861 Comment
  CHSC103158  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC110256  Brachypodium distachyon L. P. Janeway 2012-6-2 10840 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC45203  Brachypodium distachyon Lowell Ahart 1974-4-24 434 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC101703  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles. 60 Comment
  CHSC37451  Brassica nigra L. Ahart 1982-5-29 3449 Butte In a field, n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CDA10540  Brickellia californica D. G. Kelch 2006-8-2 6 .348 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC28530  Brickellia californica M. S. Taylor 1979-9-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  CHSC4407  Briza minor R. L. Smith 1966-5-10 12 Butte Butte Creek Canyon 4 mi. e of Skyway. Comment
  UCD57391  Briza minor Joseph M. DiTomaso 1976-5-23 469 Butte Lake Oroville. Peninsula at south end. 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
  CHSC117441  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS50771  Brodiaea elegans subsp. elegans Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9290 Butte about 1 mi n of beginning of grade on Feather River Highway (just e of Messilla Valley) 304 Comment
  CAS-BOT-BC482200  Brodiaea elegans subsp. elegans Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  SEINET3884982  Brodiaea multiflora Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -4 Butte Magalia, near skyline road to Paradise.; 0 168 Comment
  CAS-BOT-BC155944  Bromus commutatus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles southeast of Jarbo Gap. 335 Comment
  CHSC90802  Bromus diandrus Lowell Ahart 2005-4-14 11707 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC49513  Bromus inermis subsp. inermis Vernon Oswald 1987-6-23 3008 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On flood plain. 1511 Comment
  CHSC46436  Bromus japonicus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 Comment
  CHSC93449  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  POM112249  Bromus orcuttianus Marcus E. Jones 1897-7-9 s.n. Butte On Road from Prattville to Chico. near lehico [? handwriting difficult to decipher...] 915 Comment
  POM183184  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. 1524 Comment
  UC1609515  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  SEINET4404362  Bromus rubens J. Nachlinger 1984-4-8 922 Butte Table Mountain 4 miles N of Oroville 366 Comment
  CHSC90968  Bromus tectorum L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek. 1067 Comment
  CAS-BOT-BC18155  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte At Big Bald Rock. 1100 Comment
  CHSC42840  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte On the top of Big Bald Rock, NE of Oroville. 1005 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  CHSC90918  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 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
  RSA325177  Callitriche heterophylla M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5403 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC46349  Callitriche heterophylla var. bolanderi Lowell Ahart 1989-5-28 6278 Butte Along small streams, 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
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  SEINET10531067  Calocedrus decurrens Mary Susan Taylor 1980-5-27 Taylor 2698 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  RSA109671  Calochortus albus C. C. Bruce 1897-05 2118 Butte Butte Creek. Comment
  RSA21309  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  OBI48097  Calochortus coeruleus Rhonda Riggins 1989-4-27 1627 Butte Edge of woods along Detlow rd, 0.4 mi S US 70, 2.6 mi SW Jarbo Camp Fire Station, 8.0 mi SW Pulga 640 Comment
  HSC38030  Calochortus luteus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2492 Butte Beside Skyway, 2 mi. W of Paradise Comment
  CAS-BOT-BC491845  Calochortus luteus David D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor Comment
  CHSC27343  Calochortus superbus T. B. Devine 1977-5-5 410 Butte Beside Humbug Road, 1.2 mi ne of Centerville. 350 Comment
  CHSC51943  Calochortus tolmiei J. Marr 1988-3-19 6 Butte 5 ft. on E side of Deadwood Rd, 1/4 mi N from Hwy 70, 20 mi N of Oroville. Comment
  CHSC76967  Calochortus tolmiei Margie Collins 1894-4-1 Butte Forbestown. Comment
  CHSC9275  Calochortus tolmiei D. C. Burns 1971-4-4 121 Butte Growing on n side of highway 70, ca. 15 yds up a steep bank, ca. 20 mi n of Oroville on highway 70, (30yds. E of Jarbo Gap Cafe). 710 Comment
  CAS-BOT-BC494320  Calochortus tolmiei C. C., Mrs. Bruce 1897-6-1 2407 Butte Foush Ranch Comment
  CAS-BOT-BC494350  Calochortus tolmiei A. A. Heller 1928-4-29 14614 Butte Magalla in rich soil about serpentine rocks, in yellow pine belt. Comment
  SEINET12047250  Calochortus tolmiei D. M. Reilly 1980-1 15 Butte ca 0.25 mi SW off Big Bend Rd, ca 2 mi off Hwy 70, ca 25 mi E of Chico 610 Comment
  SEINET12048526  Calochortus tolmiei Unknown 1978-1 12 Butte 4 yd E of Hwy 70, 15.6 mi NE of Hwy 149, in Feather River Canyon 549 Comment
  POM196062  Caltha howellii H. F. Copeland 1929-6-11 1239 Butte Jonesville. 1524 Comment
  CHSC34157  Calycadenia multiglandulosa Lowell Ahart 1981-8-31 3052 Butte S of the jct of Black Bart Rd and Oroville-Forbestown Rd, ca. 10 mi W of Forbestown. 750 Comment
  JEPS94774  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte 1 1/2 air mi s of Hurleton (along Hurleton Swedes Flat Road about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  CAS-BOT-BC270004  Calycadenia multiglandulosa Lowell Ahart 1989-7-4 6363 Butte Near a mined over area S of Oregon Gulch Road, about 0.25 mile NW of the Cemetery, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 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
  SEINET11842848  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Ahart, P. 1984-1 4687 Butte ca 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetery, ca 10 mi E of Oroville 500 Comment
  CAS-BOT-BC106090  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 miles N. of Chico on Richardson Springs Road. Comment
  CAS-BOT-BC106125  Calycadenia oppositifolia David D. Keck 1930-7-25 975 Butte Hurleton, ten miles east of Oroville, on Forbestown Road, eastern Butte County. 487 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
  UC177506  Calycadenia oppositifolia C. C. Parry 1888-5-1 Butte Chico Comment
  UCD69223  Calycadenia oppositifolia P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CAS-BOT-BC270882  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  JEPS19840  Calycadenia truncata Rimo Bacigalupi with Howard Whisler 1957-7-26 6040 Butte 3.1 mi below and s of, e side of Butte Creek Canyon Nimshew; Butte Creek Canyon 365 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
  SEINET10475221  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4153 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC275393  Calycadenia truncata var. truncata J. D. Jokerst; M. S. Taylor 1979-10-13 388 Butte Jordan Hill Road (Ponderosa Way), 2.8 miles N of junction with Concow Creek, ca. 4 miles NE of Lake Concow, W of road 609 Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CAS-BOT-BC221233  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SD122560  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4717 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC38399  Calystegia occidentalis Vernon Oswald 1983-5-21 513 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  RSA394851  Calystegia occidentalis subsp. occidentalis L. Ahart, Peter Ahart 1984-6-10 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  UC600773  Calystegia occidentalis var. tomentella H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CAS-BOT-BC496958  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  UC145404  Camelina microcarpa Guill Bros. 1902-1-1 Butte Chico Comment
  UC1120059  Campanula prenanthoides P. L. Johannsen 1936-7-28 967 Butte 2 1/4 mi n junction of Butte and Secret Creeks (Plot 11); Paynes Creek Quadrangle Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC35025  Capsella bursa-pastoris R. E. Preston 1982-3-27 206 Butte Along dirt road; Campbell Hills, n of Thermalito Afterbay, Oroville. In saddle. 121 Comment
  CHSC35642  Capsella bursa-pastoris R. E. Preston 1982-4-7 226 Butte At edge of almond orchard; nw corner jct Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  HSC96910  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 air mi. SW of Chico 26 Comment
  CHSC33218  Cardamine breweri R. A. Schlising; R. Banchero 1981-5-20 4057 Butte E of Oroville and E of Feather Falls, along road to Fall River Campground. 1158 Comment
  CAS-BOT-BC37791  Cardamine nuttallii A. A. Heller 1922-3-19 13599 Butte Magalia. Comment
  CHSC33183  Cardamine oligosperma R. E. Preston 1981-4-8 51 Butte In a field on n side of Sacramento Ave. ca. 8 km w of Chico. 40 Comment
  RSA769604  Cardamine oligosperma L. Ahart, John Dittes 2009-3-20 1505 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  CAS-BOT-BC37879  Cardamine oligosperma Lowell Ahart 1979-4-3 s.n. Butte Honcut. Peter Ahart Ranch. Near edges of North Honcut Creek. 50 Comment
  CHSC83934  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River. 341 Comment
  CHSC45648  Carduus pycnocephalus Vernon Oswald 1985-5-20 1766 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. On the edge of the road near the creek. 243 Comment
  CHSC88087  Carduus pycnocephalus R. D. Fischer 2004-4-18 172 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Lower Yahi Trail between Alligator Hole and Day Camp, 75 ft. w. Carex barbarae trail sign. UTM: 10606018E 4403002N. 95 Comment
  CHSC49236  Carex abrupta L. P. Janeway 1988-6-25 2869 Butte Coon Cr near Bull Hill Rd 1.0 mi from Skyway. 1554 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
  CAS-BOT-BC17810  Carex amplifolia Lowell Ahart 1981-9-21 3195 Butte Sierra Nevada. Along French Creek. 1300 Comment
  CHSC43873  Carex amplifolia L. P. Janeway 1987-6-8 2173 Butte Jack Cr on upper side of dirt road 8.6 mi S of Big Bar Mtn. 746 Comment
  JEPS105638  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1091 Comment
  JEPS110197  Carex angustata Lowell Ahart 2006-7-16 12974 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
  UC1108031  Carex angustata H. F. Copeland 1932-8-12 Butte Butte Creek Meadow Comment
  CAS-BOT-BC18055  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. Comment
  UCD140139  Carex athrostachya Robert E. Preston 1982-7-16 340 Butte Crane Valley. 1584 Comment
  RSA364594  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 1524 Comment
  CAS-BOT-BC19103  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC11936  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC45046  Carex aurea Vernon Oswald 1983-6-22 752 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  CHSC50377  Carex bolanderi Vernon Oswald 1990-6-1 4275 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC52265  Carex bolanderi L. P. Janeway 1987-6-8 2174 Butte Jack Creek on upper side of dirt road 8.6 mi S of Big Bar Mountain (via dirt road). 746 Comment
  CHSC102212  Carex brainerdii L. P. Janeway 2009-11-14 9961 Butte High Cascade Range. Along Skyway 2.8 km north of Stirling City, top of ridge between Long Ravine and West Branch Feather River. 1183 Comment
  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
  CHSC42691  Carex capitata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2505 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC44066  Carex cusickii S. C. Morey 1983-7-23 575 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44836  Carex cusickii L. P. Janeway; R. A. Schlising 1988-8-2 3153 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground. 1143 Comment
  CHSC114423  Carex davyi Don Lepley 2012-7-24 Butte About nine air miles east of Butte Meadows and five air miles southeast of the top of Humboldt Peak, in the uppermost course of WillowCreek. UTM Coordinates: 10T 638150 E x 4439045 N. 1926 Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  CHSC68373  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  CHSC86104  Carex densa L. P. Janeway; John Hunt 2003-4-22 7760 Butte Northern Sierra Nevada Foothills. 274 m west of Lake Oroville and Bloomer Cove Campground; 5.3 km southwest of Bloomer Hill. 302 Comment
  JEPS116020  Carex densa Lowell Ahart 2009-6-3 15818 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CHSC59003  Carex echinata subsp. echinata Lowell Ahart 1992-7-26 6856 Butte In a small man made pond, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC97410  Carex echinata subsp. echinata Robert Fischer 2006-6-17 1029 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CAS-BOT-BC20002  Carex feta John Thomas Howell 1962-6-15 37509 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET12649387 Image available Carex flacca L. P. Janeway 2009-1 9795 Butte 59 Comment
  CHSC43911  Carex fracta L. P. Janeway 1987-6-8 2157 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  CHSC47061  Carex fracta L. P. Janeway 1989-5-17 3247 Butte Cyn overlook (S Fk Feather River) along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  JEPS117933  Carex geyeri L. P. Janeway & Linus Gog 2008-7-18 9435 Butte along Humbug Summit Road, above tje Cornelia Lott Sank Memorial Spring (which feeds West Branch Feather River) High Cascade Range 1536 Comment
  SEINET7559907 Image available Carex globosa John Thomas Howell 1967-6-22 42605 Butte Magalia. 701 Comment
  CHSC48539  Carex gracilior L. P. Janeway 1989-5-17 3242 Butte In dry creek along Lower Forbestown Rd 0.1 mi N of Forbestown Rd. 777 Comment
  CHSC102853  Carex hirtissima Peter F. Zika 2009-6-17 24516 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  SEINET4286076  Carex integra Unknown 2009-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  JEPS116639  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Oroville Sacramento Valley (south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum.) 44 Comment
  CHSC61341  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte Edge of a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS106372  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  UC1609038  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte about 1 1/2 mi se Bald Mountain (on n side of the dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  SEINET10710070  Carex lemmonii Edwin B. Copel 1929-7-5 Copeland s.n. Butte Jonesville, In sunny bog. 1500 Comment
  SEINET10710071  Carex lemmonii Vernon H. Oswald 1988-6-17 Oswald 3403 Butte T20N R7E se/ne/S13, Yellow Pine Forest. Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Small part of tufted sedge growing along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1067 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC111389  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Near a small drainage, north of the meadow, southwest 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. 268 Comment
  CHSC41352  Carex multicaulis R. A. Schlising; Nancy Prouty 1981-3-14 4000 Butte N of Oroville and N of Jarbo Gap along Hwy 70. Comment
  UC184078  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte near Stirling 1036 Comment
  CHSC43869  Carex nebrascensis Vernon Oswald 1983-6-22 751 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  CHSC44696  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3141 Butte SW-facing slope above Coon Hollow; near dirt rd 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  CHSC95300  Carex nudata Lowell Ahart 2006-10-15 13509 Butte North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  JEPS104170  Carex praegracilis Lowell Ahart 2003-5-27 10221 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  UCSB63750  Carex praegracilis Janeway, L. 1996-5-27 Butte Cherokee quad.; T21N, R4E, NW1/4 of NW1/4 of sec. 4; south side of Lunt Road; 300 ft. east of Nelson Bar Road; between Lunt Road and a branch of Hodapp Creek 457 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  UCD140829  Carex senta A. S. Crafts 1935-5-15 s.n. Butte Yankee Hill, Ponderosa Way. 914 Comment
  CHSC106159  Carex subfusca Peter F. Zika 2009-6-17 24508 Butte Cascade Range Highlands (CaRH), SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC36883  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1658 A Butte Coon Hollow along the edges of forest service road 26N74 ca 1/2 mi W of the West Branch Feather River. N of Philbrook Resv. Comment
  CDA42898  Carex texensis L. Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CHSC45068  Carex vesicaria Vernon Oswald 1987-6-9 2972 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  JEPS121948  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC249107  Castilleja affinis A. A. Heller 1916-4-13 12319 Butte Stilson Canon [Canyon] east of Chico 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
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  JEPS119907  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC111352  Castilleja attenuata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 A Butte On dry excellent soil, on the north side of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile southwest of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC30884  Castilleja attenuata J. D. Jokerst 1979-4-6 1179 Butte Top of North Table Mt, ca 200 m north of Cherokee Rd where it intersects the east edge of the mountain. 396 Comment
  CHSC31820  Castilleja attenuata L. Ahart 1974-4-11 375 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte 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
  CHSC26814  Castilleja campestris subsp. campestris M. S. Taylor 1978-5-7 1603 Butte Ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC3454  Castilleja exserta Judy Potter 1966-3-28 Butte South of Chico where Butte Creek crosses US 99. Comment
  CHSC43193  Castilleja lacera R. A. Schlising 1981-4-27 4042 Butte S of Cohasset. Immediate roadside of Cohasset hwy, 2.9 mi NE jct with road to Richardson Springs. 201 Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  UC726419  Castilleja lacera A. A. Heller 1941-5-9 16107 Butte 0.5 mi above old Clear Creek Post Office site (on the Clark Road to Paradise) Comment
  CHSC73821  Castilleja lineariloba B. Castro 1998-5-11 788 Butte On W-facing roadcut slopes above the Oro-Quincy Hwy, 4 mi e of its jcn with Forbestown Rd and 1.1 rd mi E of Bidwell Bar Bridge, by Lake Oroville. 313 Comment
  POM44384  Castilleja subinclusa C. C. Bruce 1897-05 1940 Butte Butte Creek. Comment
  CHSC3372  Casuarina glauca Robert L. Smith 1966-3-1 37 Butte U.S. Plant Introduction Station 5 miles SE of Chico. Comment
  CHSC104014  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico. 67 Comment
  UC1281468  Ceanothus H. E. McMinn 1946-5-11 5512 Butte one mi e Forbestown; e of Forbestown Comment
  CAS-BOT-BC49256  Ceanothus cuneatus A. A. Heller 1914-3-19 11210 Butte Canyon of Big Chico Creek 76 Comment
  SEINET10870344  Ceanothus cuneatus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4865 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET13945814 Image available Ceanothus cuneatus T. A. Ranker, P. G. Trapp 1994-1 1618 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min TOPO map); ca 1300 ft alt., T21N R4E SEC6 396 Comment
  CAS-BOT-BC50824  Ceanothus integerrimus Lowell Ahart 1987-5-6 5535 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET13945935 Image available Ceanothus integerrimus Lewis S. Rose 1955-1 55099 Butte Paradise; 1700 ft alt. 518 Comment
  CHSC35972  Ceanothus integerrimus var. californicus M. S. Taylor 1982-5-23 4508 Butte In granite on e side of Arch Rock Tunnel, n side of Hwy70, ca. 0.5 mi w of Butte-Plumas county line. 487 Comment
  RSA21542  Ceanothus integerrimus var. puberulus Carl B. Wolf 1937-5-18 8728 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  RSA1133  Ceanothus lemmonii B. D. Stark, H. E. McMinn 1929-7-26 1396 Butte 1.5 miles S of Paradise. Comment
  UC203659  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte near Forest Ranch; w slope of the Sierra 731 Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  RSA25676  Ceanothus prostratus var. occidentalis Carl B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada, 7 miles W of De Sabla on road to Forest Ranch. 762 Comment
  CHSC100800  Ceanothus velutinus R. A. Schlising; L. Janeway 1988-7-1 4547 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CDA38777  Celtis australis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  UC1609220 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
  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
  CHSC32681  Centaurea melitensis M. S. Taylor 1981-3-24 3447 Butte S side of Hwy 70, in turn out just e of Poe Dam, ca. 1 mi e of Pulga, in turn out. 487 Comment
  CHSC44892  Centaurea melitensis Lowell Ahart 1988-7-24 6129 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  CAS-BOT-BC284503  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte About Chico as well as in many fields in this part of the Sacramento Valley Comment
  JEPS5013  Centromadia fitchii H. F. Copeland 1645 Butte near Pentz Comment
  SFV3982  Centromadia pungens M. L. Vincent 1960-9-8 53 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  CHSC31913  Cephalanthus occidentalis var. californicus M. S. Taylor 1980-8-30 3324 Butte In Potter Ravine along creek at dirt rd crossing, betw. The High Rocks and Box Hall Flat, ca 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 304 Comment
  UC924237  Cephalanthus occidentalis var. californicus H. S. Reed 1939-7-10 298 Butte 5 mi nw Chico (banks of Sacramento River); Sacramento River 60 Comment
  CHSC211  Cerastium glomeratum S. Carter 1929-4-23 Butte Chico. 60 Comment
  JEPS103292  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CAS-BOT-BC400141  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley 19 Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 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
  SD5738  Chaenactis douglasii E. B. Copeland 1931-7-6 Butte Jonesville 1900 Comment
  CDA7374  Chamaemelum fuscatum L. Ahart 2004-4-1 10732 Butte 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. Comment
  JEPS83925  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-3 831 Butte 2.3 mi ssw intersection of Hwy 99 and Rowles Rd (0.2 mi s of the Butte-Tehema county line); Vina Plains 51 Comment
  CDA34170  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CHSC616  Chamaesyce maculata R. Carter 1964-6-5 110 Butte 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 3 ft. brom back door beside walk. 243 Comment
  JEPS102333  Chamaesyce maculata Lowell Ahart 2000-11-4 8717 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (W side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  JEPS108953  Chamaesyce maculata Lowell Ahart 2006-9-11 13284 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
  CHSC88927  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  CDA34143  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart, J. Dittes, J Guardino 2009-9-13 16404 -A Butte Peter Ahart Ranch, about 2 miles north and 0.25 miles east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC29804  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1979-10-3 2219 Butte Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi e of Chico. Comment
  CHSC38442  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald 1983-6-24 757 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CHSC43697  Chamerion angustifolium subsp. circumvagum Vernon Oswald 1985-7-18 1907 Butte Butte Creek ca. 0.2 mi w of Humboldt Rd. at the road island at Cherry Hill. On the edge of a meadow. 1414 Comment
  CHSC116110  Cheilanthes gracillima Lowell Ahart 2015-10-9 20547 Butte Large outcrop on the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  CHSC32693  Cheilanthes gracillima M. S. Taylor 1981-3-24 3438 Butte S side of Hwy 70, in curve in rd across the river from Mayaro, ca. 1 mi. e of Pulga. 487 Comment
  CHSC60940  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CDA7111  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  JEPS102773  Chenopodium multifidum Vernon H. Oswald 2000-11-2 9981 Butte W of Chico (Chico Sewage Treatment Plant on River Road) 41 Comment
  SEINET10479077  Chenopodium pumilio Lowell Ahart 1985-11-7 Ahart 5229 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CDA42932  Chenopodium strictum var. glaucophyllum L. Ahart 2012-9-28 18475 Butte On the east side of the path, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. Comment
  RSA0058881  Chondrilla juncea Lowell A. Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles(air) northwest of Forbestown. 483 Comment
  POM165154  Chorizanthe membranacea A. A. Heller, H. E. Brown 1902-5-6 5465 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC252835  Chorizanthe polygonoides var. polygonoides Lowell Ahart 1979-5-7 s.n. Butte 2 1/2 mi. SE of Paradise 472 Comment
  CHSC27930  Chorizanthe polygonoides var. polygonoides M. S. Taylor; J. T. Howell 1975-4-26 510 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. (Note: the sign gives Big Ridge Road instead of Ponderosa Way) 500 Comment
  SEINET10900733  Cinna latifolia Lowell Ahart 1991-8-25 Ahart 6708 Butte About 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Bush Creek. Uncommon. Yellow Pine Forest. 1219 Comment
  CHSC39049  Cirsium occidentale var. candidissimum Lowell Ahart 1983-7-29 4242 Butte About 1 mi e of Milsap Bar, about 25 mi ne of Oroville. 750 Comment
  CAS-BOT-BC288037  Cirsium occidentale var. venustum Lowell Ahart 1980-6-19 2388 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  CAS-BOT-BC228752  Cistanthe umbellata A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  UCD149987  Citrullus lanatus var. citroides E. L. 1971-9-7 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC5949  Citrus aurantium M. MacArthur 1968-6-17 180 Butte In large boxes at NE end of lawn between LS bld. and Auditorium, Chico State College campus. 60 Comment
  CHSC1092  Clarkia arcuata M. Garbutt 1929-4-21 Butte Above Salmon Hole. 152 Comment
  CHSC61161  Clarkia arcuata Vernon H. Oswald 1993-5-18 5398 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  CAS-BOT-BC164133  Clarkia concinna Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC56759  Clarkia concinna subsp. concinna L. P. Janeway 1991-6-1 3988 Butte Cut-bank of Dark Canyon Road 3.6 mi south of Big Bend/Parkhill. 280 Comment
  UC725459  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte 22 mi from Oroville (on the Feather River Highway, just e of Jarboe Pass) 609 Comment
  CAS-BOT-BC164521  Clarkia gracilis subsp. albicaulis Mrs. C. C. Bruce 1892-5-1 1954 Butte Little Chico Comment
  CHSC102723  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC84730  Clarkia gracilis subsp. albicaulis L. P. Janeway; John Hunt 2003-6-10 7824 Butte Northern High Sierra Nevada. On front of ridge into Middle Fork Feather River arm of Lake Oroville, opposite mouth of Bean Creek. 351 Comment
  CHSC2466  Clarkia gracilis subsp. gracilis R. Carter 1964-6-4 108 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. on W side of driveway. 121 Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CAS-BOT-BC163278  Clarkia mildrediae subsp. mildrediae Gladys L. Smith 1976-6-5 4536 Butte Roadside banks of Lower Feather River Canyon, Rte. 70 548 Comment
  CHSC64115  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi northeast of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls. 914 Comment
  UC1461633  Clarkia mosquinii E. Small 1967-7-19 178 Butte 0.2 mi e Enterprise (along rd to Oroville; site inundated by Oroville Res. in 1968, 1.2 mi w of South Fork Bridge, S. Fork Feather River) 182 Comment
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Jul 17 2013
  UC1606713  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-15 4857 Butte 1.1 mi s of Pompys Point (s side of Watson Ridge about 2.2 mi ene of its western end); Watson Ridge 1115 Comment
  UCD104879  Clarkia purpurea R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  UCD21824  Clarkia purpurea L. D. Gottlieb 2003-5-24 302 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  CAS-BOT-BC172531  Clarkia purpurea subsp. purpurea A. A. Heller; H. E. Brown 1902-5-6 5472 Butte Berry Canyon, near Clear Creek Comment
  CHSC42364  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1987-5-22 5667 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC46387  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-10 6224 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  UC203662  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-11 11384 Butte 8 mi n Oroville Comment
  CAS-BOT-BC163651  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37584 Butte 3.5 mi. n. of Pentz 396 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  JEPS87407  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1993-6-22 5554 Butte 2.1 mi n Doe Mill Rd. (Ponderosa Way) (Powellton Rd., n of De Sabla) 963 Comment
  SEINET10453167  Clarkia rhomboidea Mary Susan Taylor 1981-5-21 Taylor 3790 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
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  SEINET10689268  Clarkia rhomboidea A. Arthur Heller 1928-5-27 Heller 14562 Butte Paradise in red clay soil at the sawmill on the Neal Road near the lower limit of the yellow pine belt. Comment
  CAS-BOT-BC165443  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC56063  Claytonia palustris L. P. Janeway 1988-6-16 2813 Butte Along Butte Creek, 1.4 mi south of Humboldt Road via the road in the west side of the canyon. 1264 Comment
  JEPS109817  Claytonia palustris Dean W. Taylor 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  SEINET3404516  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, marshy, sloping stream-fed meadow above south bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. 1550 Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CHSC3278  Claytonia parviflora subsp. parviflora M. L. Hillier 1966-5-11 Butte Along rd. side 2.4 miles 3. of covered bridge on Honeyrun rd. Comment
  SEINET11946901  Claytonia parviflora subsp. parviflora Unknown 1998-4-11 15 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  POM102022  Claytonia perfoliata C. C. Bruce 1897-05 2016 Butte Little Chico. Comment
  CHSC30356  Claytonia perfoliata subsp. perfoliata J. D. Jokerst 1979-3-5 1139 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CHSC92572  Claytonia perfoliata subsp. perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS108794  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
  SEINET195015  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico CA Comment
  CHSC24136  Claytonia rubra subsp. rubra D. E. Hale 1976-4-4 3 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
  CHSC56074  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2797 Butte Southeast-facing slope above Butte Creek; along road in west side of the canyon 3.7 mi south of Humboldt Road. 1295 Comment
  CHSC98972  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  JEPS119742  Clematis lasiantha Lowell Ahart 2012-3-23 17776 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC175285  Clematis lasiantha A. A. Heller 1913-4-5 10700 Butte hills n. side of Feather river above Oroville; Feather R. Comment
  SEINET10536027  Clematis lasiantha Mary Susan Taylor 1977-11-12 Taylor 1543 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  SEINET12092019  Clematis ligusticifolia L. Ahart, Ahart, P. 1983-1 4215 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca 5 mi ne of Forbestown. Yellow Pine Forest 450 Comment
  JEPS88526  Clintonia uniflora Lowell Ahart 1996-6-5 7680 Butte about 7 air mi e of Feather Falls (about 1 mi n of Golden Trout Crossing, e of bridge across South Fork of the Feather River); South Fork Feather River 914 Comment
  RSA7435  Collinsia heterophylla J. H. Morrison 1932-05 s.n. Butte Deerhaw. Comment
  UC103369  Collinsia parviflora Mrs. R. M. Austin May 1896 258 Butte Little Chico Creek Comment
  CHSC1736  Collinsia sparsiflora R. Carter 1965-3-9 151 Butte Found on Old Cherokee Rd., Oroville, 18 mi. N of intersection with Oregon Gulch Rd. on W bank above road. 243 Comment
  CHSC43510  Collinsia sparsiflora var. collina Lowell Ahart 1979-4-17 1829 Butte About 1/4 mile north of Avacado Avenue, about 2 miles north-west of Bangor. 137 Comment
  CHSC33591  Collinsia tinctoria M. S. Taylor 1981-6-19 3959 Butte N side of Feather River Hwy 70, at nw end of Pulga ridge and along Pulga Rd. ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  UC392188  Collomia linearis E. B. Copeland July, 1929 Butte in open woods above Jonesville 1750 Comment
  UC600655  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte dry places in woods by Butte Creek; Jonesville 1524 Comment
  CHSC101164  Collomia tinctoria Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  SEINET10898570  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 Ahart 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  CHSC102848  Convolvulus arvensis Lowell Ahart 2009-5-30 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC76939  Convolvulus arvensis Margie Collins 1894-5-1 Butte Chico. Comment
  POM70644  Convolvulus arvensis C. C. Bruce 1897-05 2040 Butte Butte Creek. Comment
  CAS-BOT-BC286065  Conyza canadensis Lowell Ahart 1987-7-17 5836 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS117532  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  UC196062  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e Oroville Comment
  SD3504  Cornus californica E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  SFV2622  Cornus nuttallii B. Fuller 1961-4-15 s. n. Butte Hillside west of Paradise California Reservoir. Comment
  UC482954  Cornus nuttallii H. F. Copeland 1932-7-18 Butte near West Branch Comment
  SEINET12137515  Cornus nuttallii Unknown 1979-1 14 Butte N rim of Magalia Reservoir, ca 300 yds E of intersection between Dogtown Rd & Skyway 914 Comment
  UC1122799  Cornus sessilis J. E. Sowder 1935-7-6 108 Butte 2 mi. n.e. Cohassett; Chico Quad. 944 Comment
  CHSC78555  Cortaderia selloana Lowell Ahart 2000-9-2 8678 Butte Near the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS98304  Cortaderia selloana Lowell Ahart 2000-9-2 8678 Butte Near the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SD60237  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows, Gravely moist places Comment
  CAS-BOT-BC401860  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CDA39607  Corylus cornuta var. californica T. C. Fuller 1962-7-12 9189 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA34558  Cotoneaster pannosus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  JEPS115694  Cotoneaster pannosus Lowell Ahart 2009-8-23 16302 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
  JEPS124182  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. Comment
  CHSC39619  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 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
  CHSC29058  Crassula aquatica R. A. Schlising 1980-4-2 3535 Butte 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito afterbay. Comment
  JEPS103436  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water 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
  CAS-BOT-BC427665  Crassula connata Lowell Ahart 1990-4-8 6442 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  UC485366  Crepis occidentalis H. F. Copeland 1931-6-11 1532 Butte near Butte Creek Meadows; Jonesville 1828 Comment
  CHSC36841  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte On roadcut, w side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC50817  Crepis pleurocarpa Vernon Oswald; Lowell Ahart 1990-7-19 4372 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of the Plumas County line. 1950 Comment
  CAS-BOT-BC190091  Crypsis schoenoides Lowell Ahart 1982-7-10 3672 Butte Sierra Nevada. On bottom of a dry duck pond, ca. 0.25 mile southeast of Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CHSC34195  Crypsis schoenoides J. D. Jokerst; L. Ahart 1981-9-26 1488 Butte On sand bars adjacent to and E of Sacramento River at the Bidwell River State Park (Chico Landing), ca. 5.0 mi W of Chico. Comment
  UC1100331  Crypsis schoenoides Herbert L. Mason and Verne Grant 1946-8-14 13037 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CHSC113542  Crypsis vaginiflora Lowell Ahart 2014-9-23 19875 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CAS-BOT-BC189239  Cryptantha John Thomas Howell 1967-6-22 42615 Butte Magalia 701 Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  RSA774125  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC62534  Cryptantha intermedia L. P. Janeway 1993-5-2 4337 Butte Sperpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  CHSC28377  Cryptogramma acrostichoides M. S. Taylor; J. Jokerst 1979-7-21 2151 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  CAS-BOT-BC85560  Cupressus macnabiana Henry Klopfer 1926-5-1 s.n. Butte Between Paradise and Magalia. Comment
  CHSC23370  Cupressus macnabiana Robert Schlising 1974-5-19 3130 Butte Just N of Magalia, on Coutelenc Road above the Magalia Reservoir. Comment
  SEINET10966023  Cupressus macnabiana John G. Lemmon 1895-12-2 Lemmon s.n. 1895 Butte Magnalia Comment
  CHSC105824  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC44159  Cuscuta californica var. breviflora V. Oswald; L. Ahart 1988-7-29 3653 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS121892  Cuscuta campestris Lowell Ahart 2014-11-24 19918 -A 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
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CHSC75976  Cyperus acuminatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8142 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
  CAS-BOT-BC114736  Cyperus difformis Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC114738  Cyperus difformis Lowell Ahart 1982-8-22 3762 Butte Along the edges of North Honcut Creek, a little SW of the Peter Ahart Ranch, 50 Comment
  CHSC76011  Cyperus difformis Lowell Ahart; Vernon H. Oswald 1999-8-13 8139 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry. 32 Comment
  JEPS120155  Cyperus difformis Lowell Ahart 2012-10-20 18504 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
  UCD141009  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte eastern outskirts of Oroville. 60 Comment
  CHSC84153  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the west side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  SEINET10466872  Cyperus eragrostis Mary Susan Taylor 1979-10-3 Taylor 2223 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  JEPS97341  Cyperus flavescens Lowell Ahart 1995-8-19 7618 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  UCD19359  Cyperus flavicomus E. Dean; with J. Ditomaso and E. Healy 2001-8-20 850 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. South side of Hamilton Road, W of jct with Riceton Hwy, W side of RR tracks. Along dirt road that is the extension of Hamilton Rd. 30 Comment
  JEPS98262  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte 12 air mi SW of Chico (near a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ordbend) 32 Comment
  HSC103917  Cyperus iria L. Ahart 2012-10-5 18476 Butte About 2 mi. (air) SW of the Oroville Airport; south edge of parking area at the end of the road to Larkin Road Boat Launch Area 28 Comment
  UCD139947  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, ca. 1.74 miles west of Hwy 99. 29 Comment
  CHSC51282  Cyperus niger Lowell Ahart 1990-10-21 6639 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  SEINET3478064  Cyperus niger Unknown 2000-6-17 8482 Butte Paradise, Paradise, about 2 miles south, about 0.25 miles northeast of Kunkle reservoir, east of the Pentz Magalia Road 540 Comment
  CAS-BOT-BC113850  Cyperus niger var. capitatus Lowell Ahart 1981-9-19 3181 Butte Arch Rock Tunnel, Hwy 70 550 Comment
  CHSC31694  Cyperus rotundus E. Bevan; L. Bevan 1974-11-24 Butte In garden of Ernes and Lorene Bevan, near Honcut. 33 Comment
  CHSC45128  Cyperus rotundus Vernon Oswald 1987-7-5 3093 Butte Rancho De Farwell. E. side of Sacramento River just upstream from Golden State Island (perhaps technically in Glenn Co. because of shifting channel). 33 Comment
  CHSC76425  Cyperus squarrosus Lowell Ahart 1999-10-28 8302 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94594  Cyperus squarrosus Lowell Ahart 2006-9-11 13310 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
  SD405  Cyperus squarrosus E. B. Copeland 1931-7-17 Butte Jonesville; abundant on drying bottoms of vernal pools. 1700 Comment
  CHSC68412  Cyperus strigosus L. P. Janeway 1986-9-20 1881 Butte Bank along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC81934  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
  SEINET199879  Cyperus strigosus Herbert L. Mason, Verne Grant 1946-9-27 13140 Butte 3 miles W of Biggs. Comment
  CAS-BOT-BC114207  Cyperus strigosus Lowell Ahart 1981-9-19 3185 Butte Arch Rock Tunnel, Hwy 70. 550 Comment
  CAS-BOT-BC68044  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville Comment
  CAS-BOT-BC445503  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley, 5 mi. NW. of Chico on Hamilton City Road. 45 Comment
  CAS-BOT-BC189895  Danthonia californica Lowell Ahart 1980-5-17 2288 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC42901  Danthonia californica var. americana Lowell Ahart 1987-7-8 5812 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC116121  Datura stramonium var. stramonium Lowell Ahart 2015-11-7 20621 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
  CHSC49435  Datura stramonium var. tatula Vernon Oswald 1987-8-13 3211 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. In a bean field. 48 Comment
  CHSC105788  Daucus carota Lowell Ahart 2010-9-13 17153 -A Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC48690  Delphinium gracilentum Vernon Oswald 1984-4-9 1130 Butte Feather Falls Trail, 1.8 trail mi. from the trail head at the end of Bryant Ravine Rd. 502 Comment
  JEPS117186  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico 144 Comment
  HSC27073  Delphinium hesperium N. Mudron 1971-4-21 7 Butte 1.5 mi. W of Municipal Golf Course Building, Chico, 50 ft. N of Bidwell Park Rd. Comment
  CAS-BOT-BC10105  Delphinium hesperium subsp. pallescens Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC57139  Delphinium nudicaule J. B. Locey 1975-5-6 19 Butte Ca. 50 yds e of Humbug Road, ca. 1 mi n of Centerville. 182 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC56772  Delphinium patens M. S. Taylor 1981-5-5 3608 Butte W side of spur rd, ca. 1.5 mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 mi n of Feather Falls. 792 Comment
  CAS-BOT-BC121613  Delphinium patens subsp. patens A. A. Heller 1919-5-17 13158 Butte Banks of Feather River near Stirling 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
  CHSC53298  Delphinium variegatum R. J. Goedl 1976-4-20 1 Butte Ca. 6.4 mi se of Chico on Skyway, 25 yds s of Highway. Field. 213 Comment
  CAS-BOT-BC82874  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte On Highway #24 near the junction of the Yankee Hill road. Comment
  CHSC1186  Dendromecon rigida L. Lancelot 1930-4-19 Butte Magalia. 731 Comment
  CHSC77436  Dendromecon rigida Laura Bogni 1997-4-5 25 Butte West side of Coutelec Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 670 Comment
  POM218974  Deschampsia cespitosa E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1750 Comment
  CAS-BOT-BC194309  Deschampsia cespitosa subsp. cespitosa A. A. Heller 1928-6-16 14621 Butte Butte Meadows Comment
  CAS-BOT-BC192654  Deschampsia danthonioides Lowell Ahart 1983-5-12 3977 Butte About 0.5 mi. NE of Highway 99 and Pentz Road 65 Comment
  CDA31662  Deschampsia danthonioides P. B. Kennedy 1914-5-1 Butte Chico 0 Comment
  SEINET10867400  Deschampsia danthonioides Alan A. Beetle 1941-6-27 Beetle 2746 Butte Near Lomo at road forking to Chico Creek. Open forest of Pinus ponderosa and Libocedrus decurrens. Comment
  SEINET10968134  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  POM365045  Deschampsia elongata L. Ahart, P. Ahart 1984-6-10 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UCD63298  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC636  Dicentra formosa R. M. Staley 1952-7-13 Butte Ponderosa Way. 609 Comment
  CHSC9699  Dicentra formosa Nancy Mosman 1971-7-3 53 Butte Along n side of Humboldt Road ca. 0.7 mi e of Butte Meadow Ranger Station. 1371 Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  RSA4206  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 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
  UCD139228  Dichelostemma capitatum Richard Sannar 1982-3-16 24 Butte along State Route 70, 1 mile north of intersection with Palermo Road, south of Oroville. Comment
  CHSC79869  Dichelostemma capitatum subsp. capitatum Leanna Brown 1999-3-9 20 Butte Canyon Rim Pl. Rd. and Skyway. 130 Comment
  HSC45005  Dichelostemma capitatum subsp. capitatum J. P. Smith 1973-3-22 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA715725  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 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
  CHSC4165  Dichelostemma multiflorum R. Carter 1966-4-30 384 Butte Found 7 mi. E of Oroville, ca. 1/8 mi. w off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CAS-BOT-BC501078  Dichelostemma multiflorum Lowell Ahart 1985-6-17 5057 Butte 100 yards south of the dirt rood, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 975 Comment
  SEINET10931328  Digitalis purpurea Mary Susan Taylor 1982-8-16 Taylor 5001 Butte T24N R4E ne/sw sec 1. Pulga NW quad. At loop in rd above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. Open to sun; 5200 ft. 1585 Comment
  CAS-BOT-BC209041  Digitaria sanguinalis Lowell Ahart 1987-8-30 5858 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
  JEPS110377  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC87543  Diospyros kaki R. D. Fischer 2004-4-11 125 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, shading picnic table, at the junction of 10 Mile House Road and Annie Bidwell Trail. 256 Comment
  JEPS119747  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SD234187  Diplacus douglasii Virginia Pinkus Ryder 1965-4-3 379 Butte Table Mtns. Open lava meadows. 381 Comment
  CHSC45720  Diplacus grandiflorus J. Marr 1988-4-8 13 Butte On e side of Hwy 70, 16 mi n of Oroville. 304 Comment
  CHSC44789  Diplacus kelloggii R. Banchero 1980-6-19 256 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC47500  Diplacus kelloggii Lowell Ahart 1973-3-24 183 Butte On the north side of Swedes Flat Road, about 1/4 mile east of the bridge across Rocky Honcut Creek, north of Bangor. 487 Comment
  CHSC58199  Diplacus layneae Vernon H. Oswald; Mayo Torgerson 1992-6-24 5032 Butte Trail into Rattlesnake Creek, which starts at the hairpin curve on Whiskey Flat-Sawmill Peak Rd. ca. 0.1 mi W of the gravel pit, Willard Mine property, ca. 1 mi (air) NE of Magalia. 707 Comment
  CHSC25293  Diplacus torreyi M. S. Taylor 1977-7-15 1416 Butte On s side of Humbug Rd, ca. 3 mi s of Paradise. 579 Comment
  CHSC28699  Diplacus torreyi M. S. Taylor 1978-7-21 1813 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  SD7102  Diplacus torreyi Daniel Cleveland July 1882 Butte Sutton House Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  SD111941  Diplacus tricolor Barbara Ertter, J. Strachan, L. Ahart 1980-5-8 3312 Butte Pater Ahart Ranch ca 2-1/2 mi NNE of Honcut between Marysville and Oroville, oatfield 29 Comment
  CAS-BOT-BC154169  Diplacus tricolor Mrs. C. C. Bruce 1897-5-1 2107 Butte Fields Comment
  CHSC109851  Dittrichia graveolens L. P. Janeway 2012-11-14 11083 Butte Cascade Range Foothills. Along Skyway between Chico and Para-dise, 5.3 road km east of its bridge over Butte Creek; along inner edge of west-bound lane. 215 Comment
  SBBG121273  Dittrichia graveolens L. Ahart 2007-10-30 14510 Butte Hwy 99, ca. 100 yds N of Badger Crk Rd, 300 yds S of Richvale East Rd, 7 mi W of Oroville 34 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  UC1185278  Dodecatheon clevelandii subsp. patulum H. E. Brown Apr. 1-15, 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  CHSC52117  Dodecatheon clevelandii var. patulum Gary McGrath 1977-3-3 8 Butte Ca. 10 m e of Cohasset Road, 10 km n of Chico. 75 Comment
  RSA758601  Dopatrium junceum Peter Fritsch, Boni Cruz 2005-8-9 1787 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. 41 Comment
  CHSC55483  Downingia bella L. P. Janeway 1991-5-2 3926 Butte 1 mi east of Palermo-Honcut Hwy and ca 2 1/2 mi north of Honcut. 38 Comment
  HSC32573  Downingia bella David Johnson 1974-4-20 26 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  CHSC31556  Downingia cuspidata L. Ahart 1978-5-12 1713 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA304469  Downingia cuspidata Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca 2 1/2 miles NNE of Honcut, between Marysville and Oroville. 30 Comment
  CHSC115370  Downingia insignis Lowell Ahart 2015-4-24 20058 Butte Normal size plants, on dry to wet bare soil, bottom and sides (road edges) of a large duck field. 19 Comment
  CHSC48010  Downingia insignis Vernon Oswald 1985-5-8 1749 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  UC196263  Downingia ornatissima var. ornatissima A. A. Heller 1914-4-17 11305 Butte 8 mi n Oroville Comment
  CAS-BOT-BC41347  Draba verna Lowell Ahart 1983-4-1 3914 Butte About 4 miles south of Jarbo Gap. Along the edge of old Highway 40. 350 Comment
  CAS-BOT-BC41345  Draba verna Lowell Ahart 1980-3-6 2027 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC31141  Draba verna var. aestivalis M. S. Taylor 1979-3-19 1929 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC84243  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  UC176140  Drymocallis glandulosa var. glandulosa A. A. Heller 1913-6-7 10807 Butte near Stirling; near Stirling 1074 Comment
  UCD80274  Dryopteris CNPS SN Foothill Team 2005-3-30 SNFN 0070 b Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC86084  Dryopteris arguta R. D. Fischer; Paul Maslin 2003-12-24 19 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 200 yds west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  CHSC90204  Dryopteris arguta Lowell Ahart 2005-1-20 11473 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  JEPS116139  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast 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 northea 381 Comment
  SEINET10530136  Dryopteris arguta Mary Susan Taylor 1979-3-20 Taylor 1949 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  SEINET10970299  Duchesnea indica Mary Susan Taylor Taylor 445 Butte Campus of the California State University, Chico. 61 Comment
  CHSC36120  Dudleya cymosa K. Bridwell 1978-5-25 114 Butte Along n side of Skyway Rd, ca. 3 mi sw of Paradise. 609 Comment
  JEPS120586  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS120618  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC52010  Dysphania pumilio L. P. Janeway; C. A. Janeway 1986-11-23 1944 Butte Foreman Creek access to Lake Oroville. On a +/- muddy and gravelly point in Lake Oroville ca 20-40 ft low below high watr mark. 274 Comment
  CHSC28867  Echinochloa crus-galli J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 429 Butte Top of North Table Mt, ca 100 m n of the intersection of east edge of Mt and Cherokee Rd. Comment
  SEINET6836767 Image available Echinochloa crus-galli H. E. Brown 1896-10-2 114 Butte near Oroville 53 Comment
  SEINET10509320  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 C Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  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-BC197249  Echinochloa muricata Lowell Ahart 1986-11-14 5463 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CAS-BOT-BC197254  Echinochloa muricata var. microstachya A. A. Heller 1914-5-19 11418 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC208564  Echinochloa oryzicola Lowell Ahart 1984-9-17 4792 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  JEPS110471  Elaeagnus angustifolia Lowell Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 20 Comment
  CHSC115324  Elatine Lowell Ahart 2015-4-24 20065 Butte Bottom of a large duck field, 50 yards north of Parking Lot 2, about 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  UCD150364  Elatine ambigua William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd., rice field. Comment
  CAS-BOT-BC113637  Eleocharis acicularis Herbert L. Mason; Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge. Comment
  CAS-BOT-BC113460  Eleocharis bella A. A. Heller 1914-7-23 11596 Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  CHSC51021  Eleocharis bella Lowell Ahart 1990-7-4 6546 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC56610  Eleocharis bella L. P. Janeway 1987-6-26 2327 Butte Meadow just northwest of Logue Meadows along road to Lynch Meadows. 1325 Comment
  SEINET3441892  Eleocharis bella Unknown 2000-7-11 8577 Butte Feather Falls, Feather Falls, about 4 air miles northeast, sides 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 1210 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC46300  Eleocharis coloradoensis Vernon Oswald 1989-5-23 3781 Butte Gray Lodge Wildlife Area, in the field se of the intersection of Rutherford Rd and the road to Parking Areas 12 and 13. 19 Comment
  SEINET3441881  Eleocharis decumbens Unknown 2000-7-7 8560 Butte Feather Falls, Feather Falls, about 4 air miles northeast, about 1 mile southwest of the intersectiof Lumpkin Ridge Road,road to Fall River and the county road, upper west branch of knownothing Creek, north side of Lumpkin Ridge Road 1210 Comment
  CAS-BOT-BC113374  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, Honcut, ca 2.5 mi N and 1/4 mi E of Honcut. 50 Comment
  CHSC68438  Eleocharis macrostachya L. P. Janeway 1988-6-5 2731 Butte Canyon of Big Chico Creek; about 1 mi northeast of the end of Upper Park Road. 213 Comment
  CHSC78184  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 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
  JEPS116007  Eleocharis macrostachya Lowell Ahart 2009-6-30 15979 Butte On wet soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 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
  JEPS98593  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8389 Butte 12 air miles SE of Oroville (E side of North Honcut Creek, Peter Ahart Ranch, 1 mi N and 2 3/4 mi E of Honcut) 39 Comment
  RSA754815  Eleocharis palustris L. Ahart 2009-6-30 15979 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CHSC78197  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte In bog like areas, seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia road, about 2 miles south of Paradise. 548 Comment
  CHSC44294  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte Southeast end of the large pond in the Oroville Wildlife Area on the west side of the Feather River at about the level of Walnut Ave. 32 Comment
  CHSC31670  Eleocharis quinqueflora L. Ahart 1973-5-24 229 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET13709963  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8411 Butte 2 Mi. S of Paradise, 1/4 Mi. NE of Kunkle Reservoir (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  SEINET13710024  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8386 Butte 13 Mi. SE of Oroville (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  CHSC76303  Eleocharis radicans Lowell Ahart 1999-9-21 8276 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  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
  UCD61273  Eleusine indica L. E. Hazeltine 1916-7-27 Butte Chico. Comment
  CHSC49634  Elodea canadensis Vernon Oswald 1988-5-19 3325 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a marchy pond located along an old chanel of the Sacramento River. 45 Comment
  SEINET10506997  Elymus Mary Susan Taylor 1978-7-21 Taylor 1794 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CAS-BOT-BC227295  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  CHSC102171  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  JEPS87480  Elymus stebbinsii Lowell Ahart 1993-6-26 7025 Butte ca. 1 mi. w. Lost Creek Reservoir (w. side of dirt rd., Mooreville Ridge); Mooreville Ridge 1188 Comment
  CHSC94254  Elymus trachycaulus subsp. subsecundus Lowell Ahart 2006-7-16 12999 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  CHSC44172  Elytrigia elongata V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca. 3 mi (air) se of Jonesville on Humbug Rd, ca. 0.3 mi w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. Roadside. 1755 Comment
  CAS-BOT-BC165910  Epilobium John Thomas Howell 1959-9-26 35085 Butte Arch Rock, N. Fk. Feather River 457 Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  POM193366  Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  CHSC33246  Epilobium brachycarpum Mary Banchero; R. Schlising 1979-9-2 Butte 6 mi NE Forest Ranch on Hwy 32; roadside fill. Comment
  CHSC64201  Epilobium brachycarpum S. C. Morey 1983-7-23 589 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCR219102  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15602 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  CHSC117347  Epilobium campestre B. Castro 2013-12-13 2002 Butte Sacramento Valley. Richvale vernal pools, 500 to 1000 ft W of Hwy 99 directly across from Thermalito Afterbay and just less than 1 mi S of Richvale Hwy. Bottoms of vernal pools south of east-west ditch near S end of property. 33 Comment
  CHSC43426  Epilobium campestre Lowell Ahart 1977-7-10 1463 Butte On the bottom of a slough, about 1/10 mile north of Middle Honcut Road, about 1 mile north-west of Honcut. 30 Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC46680  Epilobium ciliatum subsp. ciliatum V. Oswald; L. Ahart 1989-8-15 3948 Butte Between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. Along a drainage. 1920 Comment
  CHSC94033  Epilobium ciliatum subsp. ciliatum R. D. Fischer 2005-6-12 744 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from a wet meadow drainage ditch adjacent road/trail. 219 Comment
  JEPS108972  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-11 13287 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
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC112109  Epilobium densiflorum Lowell Ahart 2012-6-5 18160 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1-1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC13710  Epilobium densiflorum M. S. Taylor 1974-10-11 333 Butte On sandbar in Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  CHSC31183  Epilobium densiflorum M. S. Taylor 1978-7-18 1687 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  UC600554  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-7-21 Butte edge of Kennedy's Meadow Jonesville Comment
  CHSC26796  Epilobium minutum M. S. Taylor 1978-5-6 1572 Butte By RR tracks, Magalia. 609 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
  CHSC46137  Epilobium minutum Lowell Ahart 1982-6-4 3536 a Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC35106  Epilobium pallidum R. A. Schlising 1980-6-1 3613 Butte S of Paradise off Pentz Hwy, at Kunkle Reservoir. 440 Comment
  CHSC101835  Epilobium torreyi Lowell Ahart 2009-5-23 15755 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC38564  Epilobium torreyi Vernon Oswald 1983-5-30 577 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 304 Comment
  CHSC52093  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  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
  CAS-BOT-BC57992  Equisetum arvense John Thomas Howell 1961-9-22 36717 Butte Bank of Feather River, Oroville. 53 Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 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
  CHSC33694  Equisetum laevigatum L. Ahart 1981-4-9 2752 Butte Near the edge of North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  JEPS120949  Equisetum laevigatum Lowell Ahart 2013-4-20 18551 Butte Wilson Creek, about 100 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
  CHSC113940  Eragrostis cilianensis Lowell Ahart 2014-7-18 19693 Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  UC1562282  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 Butte 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Lake Oroville 228 Comment
  SEINET10836138  Eragrostis cilianensis Lowell Ahart 1984-10-5 Ahart 4813 Butte On dry red gravelly soil in the open pasture fields; the area has a high water table; Peter Ahart Ranch, ca. 1.5 mi N and 1.7 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland. 50 Comment
  CHSC49242  Eragrostis mexicana subsp. virescens Vernon Oswald 1988-8-8 3686 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In irrigation ditch bordering Nelson Rd. 47 Comment
  SEINET256565 Image available Eragrostis pilosa Lowell Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 302 Comment
  UC73441  Eremocarpus setiger H. E. Brown 1896-10-9 112 Butte near Clear Creek 53 Comment
  CHSC101490  Eremogone cliftonii Samantha Mackey Hillaire 2008-6-10 1253 Butte Lassen National Forest. Powerline survey, approx. 1.4 air miles east of Flea Mountain to southern end of occurrence. Accessed from roads 24N13, 24N13A, 23N14Y, 23N22Y. Found plants on ridges between 636057.190602654, 4414774.7153736 in the north to 633268,739075563, 4410021.81676031 in the south. Elevation 3200-4292 feet. 989 Comment
  CHSC41869  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC45264  Erigeron bonariensis Vernon Oswald 1988-10-25 3711 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC95137  Erigeron bonariensis Lowell Ahart 2006-11-12 13540 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC26623  Erigeron canadensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC37079  Erigeron canadensis L. Ahart 1982-9-9 3770 Butte Ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC34247  Erigeron lassenianus var. lassenianus M. S. Taylor 1981-8-16 4211 A Butte N side of rd 25N04, ca. 0.5 mi e of its jct with 52513 ca. 1 mi ne of Jones Meadow, ca. 6 mi ne of Stirling City. 1889 Comment
  CAS-BOT-BC295773  Erigeron petrophilus var. sierrensis Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  RSA0118748  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 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
  UC1730265  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft SW of the Gap 1280 Comment
  SEINET10473751  Erigeron philadelphicus Lowell Ahart 1985-7-24 Ahart 5155 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  UC600740  Erigeron philadelphicus var. philadelphicus H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  CHSC20971  Erigeron sumatrensis M. S. Taylor 1975-9-8 903 Butte Along Big Chico Creek, California State University, Chico, campus. 60 Comment
  JEPS124284  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte East intersection of Spruce Street and Washington Street, Gridley. Comment
  POM73515  Eriodictyon californicum C. C. Bruce 1897-05 1811 Butte Butte Creek. Comment
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  POM305187  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 594 Butte Feather River Hwy. Comment
  CHSC30847  Eriogonum nudum var. oblongifolium M. S. Taylor 1980-9-19 3339 Butte On edge of large serpentine area at jct of Coutelenc Rd and the Skyway, Magalia. 670 Comment
  CAS-BOT-BC269842  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  CAS-BOT-BC253051  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cementery about 1/2 mile south of Oregon Gulch Road about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CHSC34721  Eriogonum umbellatum var. ahartii M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC69687  Eriogonum umbellatum var. ahartii Vernon Oswald 1985-6-26 1867 Butte Forbestown Reservoir Rd. 0.2 mi w of Oroleve Creek. 617 Comment
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  CHSC37367  Eriogonum umbellatum var. nevadense R. A. Schlising 1982-8-1 4365 Butte E of Stirling City at white basalt Table Mountain; N end of Table Mt. 1859 Comment
  SEINET10479572  Eriogonum umbellatum var. polyanthum Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5113 Butte About 8 miles north-east of Feather Falls. Comment
  SEINET11934477  Eriogonum umbellatum var. polyanthum Unknown 1985-1 5164 Butte 50 yrds S of the road to the Forbestown Res., about 2.5 mi NE of Forbestown 884 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  SEINET11932639  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-1 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, on large outcrop, ca 20 mi NE of Oroville 488 Comment
  CAS-BOT-BC262215  Eriogonum ursinum Lowell Ahart 1987-5-27 5717 Butte Along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 365 Comment
  CHSC100482  Eriogonum vimineum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC22941  Eriophyllum lanatum var. grandiflorum Robert A. Schlising 1963-6-7 2614 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  CHSC330  Eriophyllum lanatum var. grandiflorum B. Richardson 1929-4-18 Butte Plains near Chico. 60 Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC108790  Erodium brachycarpum Lowell Ahart 2012-4-9 17844 Butte Near the high east cliff edge of Big Chico Creek, about 5 yads west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  JEPS107954  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS117895  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  POM88768  Erodium cicutarium C. C. Bruce 1898-05 2385 Butte [No location information on label.] Comment
  CHSC669  Erodium moschatum E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  SEINET10495114  Erodium moschatum Mary Susan Taylor 1975-3-25 Taylor 420 Butte Chico. Comment
  CHSC116735  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte On dry yellow soil, near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  CHSC14197  Eryngium castrense F. T. Griggs 1973-3-20 Butte 10 miles s of Chico, 0.4 miles s of the inersection of Pentz Road and Hwy 99E. Comment
  UCD67352  Erysimum capitatum var. capitatum D. Dubbe 1974-4-26 6 -2 Butte Feather River Canyon, 5 mi S of Poe Power Dam, along hwy 70. Canyon bottom; mixed evergreen forest, with Acer macrophyllum; sandy gravel soil; full sun. Scattered plants along road side. Perennial herb, ca. 6 inches high. 609 Comment
  POM95436  Erysimum capitatum var. capitatum C. C. Bruce 1898-05 2384 Butte [No locality information provided] Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC1759  Erythranthe cardinalis R. M. Staley 1953-7-13 Butte Butte Creek. Comment
  CAS-BOT-BC153871  Erythranthe glaucescens John Thomas Howell 1951-8-19 28155 Butte 2 miles west of Pulga 365 Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  CHSC90150  Erythranthe glaucescens J. Lund 1980-4-19 Butte On the trail leading up to the falls above Richardson Springs 2.0 mi east of Chico. 121 Comment
  CHSC44668  Erythranthe guttata R. Banchero 1980-6-2 185 Butte Cherry Hill Meadows, 8.2 mi NE of Humbolt Rd and Hwy 32 along Humbolt Rd. 1463 Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 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
  CHSC31871  Erythranthe latidens L. Ahart 1978-5-1 1678 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48999  Erythranthe microphylla Vernon Oswald 1984-3-26 1111 Butte Hamilton-Nord-Cana Hwy, 0.5 mi n of Bennett Rd. 48 Comment
  CHSC44755  Erythranthe pulsiferae R. Banchero 1980-6-16 231 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, Ca 5 mi NW of the jct of Humbolt Rd and Hwy 32. 1292 Comment
  SBBG40313  Erythronium californicum J. Ingram, A. Ingram 1960-4-5 281 Butte just N of Southern Pacific Railroad Station, Magalia 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
  CHSC32627  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3471 Butte Se side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC32643  Erythronium multiscapideum M. S. Taylor 1981-4-2 3473 Butte S side of rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Comment
  CAS-BOT-BC504524  Erythronium multiscapideum C. C., Mrs. Bruce 1898-5-1 2011 Butte Butte Creek Comment
  CAS-BOT-BC504532  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte About 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  HSC23466  Erythronium multiscapideum J. L. Wilson 1970-2-27 207 Butte Canyon side NE of Paradise, 0.65 mi. E of intersection of the steep gravel rd. and Coutolenc Rd. on the gravel rd., intersection 0.15 mi. NE of intersection of Coutolenc Rd. and skyway 579 Comment
  CAS-BOT-BC502809  Erythronium purpurascens Clarence R. Quick 1952-6-30 52 -103 Butte Ridge top, Big Bar Mountain east of Pulga Comment
  RSA795647  Eschscholzia caespitosa L. Ahart 2012-4-20 17898 Butte West side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 miles west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CAS-BOT-BC402961  Eschscholzia californica John Thomas Howell 1962-6-15 37469 Butte Magalia 731 Comment
  JEPS119618  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte About 5 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  UC175321  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte n Oroville; Table Mountain Olive Ranch Comment
  RSA21633  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-12 8787 Butte Sacramento Valley, 1 mi. no. of Durham. 46 Comment
  CHSC52448  Eschscholzia lobbii Germaine Belanger 1984-4-3 12 Butte 6 mi S of Oregon Gulch and Cherokee Rd jct. 396 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
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  CAS-BOT-BC312030  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte Summit above Jonesville Comment
  SEINET10493553  Euphorbia Mary Susan Taylor 1979-7-21 Taylor 2156 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CDA18873  Euphorbia oblongata R. Hill, L. Pejsa 2000-5-15 PDR 1174221 Butte along Bille Rd., Paradise. 0 Comment
  JEPS94953  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Honcut Creek) 60 Comment
  SEINET10904941  Euthamia occidentalis Mary Susan Taylor 1979-10-2 Taylor 2215 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC113429  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 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
  CHSC93657  Festuca Lowell Ahart 2006-5-19 12635 A Butte 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
  JEPS110142  Festuca Lowell Ahart 2006-5-19 12635 A Butte 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
  UCR177719  Festuca microstachys var. ciliata Lowell Ahart 2006-5-10 12619 Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.5 miles (air) southwest of Pulga 355 Comment
  CHSC110388  Festuca multiflora Lowell Ahart 2012-9-28 18472 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC278798  Festuca occidentalis Lowell Ahart 1984-6-10 4704 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC73716  Festuca rubra H. Durio 1995-8-1 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  RSA754865  Festuca subulata L. Ahart 2008-6-2 14807 Butte South side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  CAS-BOT-BC77692  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  CHSC27179  Ficus carica M. MacArthur 1968-6-12 321 Butte NE of Aymer Jay Hamilton School play yard, Chico State College campus. 60 Comment
  JEPS115276  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 242 Comment
  CHSC95173  Filago californica R. D. Fischer 2004-4-28 798 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the south end of Disc Golf Course. 396 Comment
  CAS-BOT-BC62939  Frangula californica subsp. tomentella Ella Dales Cantelow 1940-10-6 4292 Butte Buck's Lake to Oroville Road. Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] Comment
  CAS-BOT-BC55785  Frangula rubra subsp. yosemitana C. R. Quick 1941-6-8 41 -09 Butte About 2 miles S. of Big Bar. Mt. Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  JEPS120065  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA755763  Fraxinus latifolia L. Ahart 2009-5-23 15749 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  UC175530  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Big Chico Creek Chico Comment
  JEPS33409  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte in Pinkston Canyon, Big Bend Road to Yankee Hill, close to junction of new US 40-A w old road at upper end of Feather River damsite Yankee Hill; Pinkston Canyon 548 Comment
  CAS-BOT-BC130313  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte De Sabla Reservoir, near Magalia Comment
  CHSC29100  Fritillaria eastwoodiae M. S. Taylor; J. D. Jokerst 1980-4-18 2502 Butte Ca. 1 mi S of Nimshew, ca. 2 ft E of Nimshew Rd. 609 Comment
  CHSC29033  Fritillaria micrantha J. D. Jokerst 1980-3-28 525 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC28974  Fritillaria pluriflora J. D. Jokerst 1980-3-12 468 Butte Ca 1.0 mi E of Chico Muni Airport, 600 m E of Cohasset Hwy where it makes a 45 degree turn to the NW. 67 Comment
  CHSC34223  Fritillaria recurva M. S. Taylor 1981-5-21 3784 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Feather River Hwy 70. 1005 Comment
  SEINET10500609  Galium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5523 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  SD6589  Galium aparine Daniel Cleveland 1885-3-17 Butte Sutton House Comment
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Oct 3 2007
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  CHSC44906  Galium bolanderi Lowell Ahart 1988-7-24 6132 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  JEPS52657  Galium bolanderi Lauramay T. Dempster 1964-7-25 4049 Butte Hwy 32 at Butte-Tehama county line (just n of Lomo) 1051 Comment
  JEPS107756  Galium divaricatum Lowell Ahart 2005-5-11 11797 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  CAS-BOT-BC26139  Galium grayanum A. A. Heller 1914-8-7 11668 Butte Summit back of Jonesville, on the north side of the pass. Comment
  CHSC48883  Galium murale Vernon Oswald 1988-3-4 3248 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 71 Comment
  CHSC29629  Galium parisiense J. D. Jokerst 1980-5-28 805 Butte Table Mt. Top of North Table Mt, sides of Cherokee Rd ca 1/2 mi W of the edge of the Mt. Comment
  CHSC38658  Galium parisiense Vernon Oswald 1983-5-21 515 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft E of the power lines. 249 Comment
  CHSC44427  Galium parisiense Lowell Ahart 1988-6-29 6091 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  JEPS119883  Galium parisiense Lowell Ahart 2012-6-2 18144 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC53981  Galium tricornutum Vernon H. Oswald 1991-4-24 4529 Butte Hicks Lane, ca. 0.8 mi north of Sycamore Creek, in north Chico. 60 Comment
  UC1523190  Galium trifidum M. S. Taylor and Lowell Ahart 1981-8-15 4187 Butte ca. 14 mi ne Stirling City (e side of Humbug Rd, meadow on n side of lake); Jonesville SW Quad, Snag Lake, Montane Meadow 1737 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
  CHSC64217  Galium trifidum var. pacificum S. C. Morey 1983-8-1 654 Butte On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC33963  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-16 4196 A Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  UC426967  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville 1500 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC303383  Gamochaeta ustulata Lowell Ahart 1985-5-31 5036 Butte About 0.25 mile W of the Enterprise Launch Area about 25 ft above the high water line of Lake Oroville, NE of Oroville 274 Comment
  UC1174974  Garrya fremontii P. C. Everett and E. K. Balls 1959-10-20 23910 Butte 9.4 mi ne Chico (State Hwy 32, toward De Sabla) 792 Comment
  CHSC99008  Gastridium phleoides Lowell Ahart 2008-5-21 14780 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north 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
  UCD66573  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville. Comment
  CHSC96326  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. On steep east-facing bank between edge of meadow and upper forest. 1082 Comment
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  CHSC39275  Gayophytum heterozygum Lowell Ahart 1983-7-29 4224 Butte Along the edge of the dirt road, about 2 miles south of Milsap Bar, about 23 miles north-east of Oroville. 750 Comment
  CHSC38492  Genista monspessulana Vernon Oswald 1983-5-2 407 Butte Upper Bidwell Park, Chico, between Chico Creek and the lawn of Hooker Oak Recreation Area. 80 Comment
  UC463036  Gentiana newberryi E. B. Copeland 1931-7-21 Butte Jonesville 1500 Comment
  CHSC51884  Gentianopsis simplex L. P. Janeway 1988-7-29 3120 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC94438  Gentianopsis simplex L. P. Janeway 2006-8-12 8846 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC99325  Geranium carolinianum Lowell Ahart 2008-5-12 14753 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC55799  Geranium core-core Vernon H. Oswald; Lowell Ahart 1991-11-2 4884 Butte North end of Long Bar Rd., just south of the boundary of the State Recreation Area on the south side of Thermalito Diversion Pool, near Oroville. 97 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 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
  JEPS119709  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC10752  Geranium molle Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120522  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Forbestown Road; 1.8 air km south of the Ponderosa Reservoir dam. Comment
  UC660001  Gilia capitata subsp. mediomontana Lincoln Constance 1941-5-28 2827 Butte South Branch of the Feather River at Magalia; Sierra Nevada foothills, South Branch Feather River 487 Comment
  CHSC82402  Gilia capitata subsp. pedemontana Lowell Ahart 2002-5-7 9626 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
  CHSC90252  Gilia tricolor Camela J. Ott 1989-3-14 1 Butte Population in vic. of Salmon Hole, upper Bidwell Park, ca. 3 mi e of Chico Municipal Golf Course. 106 Comment
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  CAS-BOT-BC266483  Githopsis diffusa A. A. Heller; H. E. Brown 1902-5-8 5491 Butte Berry Canyon [near Clear Creek] Comment
  POM74782  Githopsis pulchella subsp. campestris C. C. Bruce 1897-04 1832 Butte [No location data on label] Comment
  CHSC30823  Githopsis specularioides M. S. Taylor; J. D. Jokerst 1980-4-18 2526 Butte On dry open bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  SEINET10464588  Githopsis specularioides Mary Susan Taylor, James D. Jokerst 1980-4-18 Taylor 2526 Butte On east side of Humbug road, about 3 miles southwest of Nimshew 518 Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 Comment
  JEPS95316  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte about 1 1/2 mi S of Oroville Airport (S side of the Shooting Area, SW of Oroville) 45 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
  CAS-BOT-BC435023  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  SEINET10473777  Gnaphalium chilense Mary Susan Taylor 1978-9-9 Taylor 1924 Butte Along the Skyway in the village of Inskip. 1468 Comment
  RSA713012  Gnaphalium luteoalbum L. Ahart 2005-12-11 12511 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
  JEPS108948  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 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
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  SEINET10474675  Gnaphalium palustre Lowell Ahart 1985-11-7 Ahart 5239 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 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
  POM180883  Goodyera oblongifolia H. F. Copeland 1924-8-10 857 Butte Jonesville. Comment
  CHSC112891  Gratiola ebracteata Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 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
  JEPS123885  Gratiola ebracteata Lowell Ahart 2015-5-5 20140 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
  JEPS32707  Gratiola ebracteata Lewis S. Rose 1963-6-5 63142 Butte 3 mi w Palermo 45 Comment
  UCD80779  Gratiola ebracteata CNPS SN Foothill Team 2005-3-31 SNFN 0073 g Butte CDFG, North Table Mountain Wildlife Area, in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  HSC32651  Gratiola ebracteata Gary S. Lester 1974-4-20 96 Butte Skyway Blvd., 1 mi. E of US 99 61 Comment
  JEPS115719  Grindelia hirsutula Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle 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
  UC480670  Hackelia californica H. F. Copeland 1930-7-20 1313 Butte Jonesville 1524 Comment
  CHSC27983  Hackelia nervosa M. S. Taylor 1978-7-18 1711 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CAS-BOT-BC282856  Hainardia cylindrica Lowell Ahart 1980-6-15 2382 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC28541  Hazardia whitneyi M. S. Taylor; J. D. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd, near Sawmill Peak, ca. 9.2 mi n of its jct with Concow Rd, ca. 2 mi e of Magalia. 944 Comment
  CHSC103730  Hedypnois cretica Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  JEPS119776  Hedypnois rhagadioloides Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 west of Highway 32, south part of Upper Bidwell Park, about 8 /12 miles (air) northeast of Chico. Comment
  JEPS126530  Hedypnois rhagadioloides Lowell Ahart 2016-5-25 20875 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC89488  Helenium puberulum R. D. Fischer 2004-8-24 440 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property. At edge of road in drainage ditch. 216 Comment
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CAS-BOT-BC314756  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CAS-BOT-BC314758  Helianthella californica var. nevadensis A. A. Heller 1915-5-25 11897 Butte Ridge above Enterpirse in the Sierra Nevada 609 Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  CHSC76121  Helianthus bolanderi G. F. Hrusa 1997-8-5 14066 Butte Sierra Nevada. Grown in Woodland. Magalia. Immed. N of Magalia Reservoir in N hillside above Little Butte Creek. Accessed off Holmwood Rd. Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  JEPS128617  Heliotropium europaeum Lowell Ahart 2017-8-8 21656 Butte Park, west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CDA42909  Helminthotheca echioides L. Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, South of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC45698  Helminthotheca echioides Vernon Oswald 1983-6-28 783 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Along the edge of ponds in the refuge. Comment
  CAS-BOT-BC314997  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC315000  Hemizonella minima Lowell Ahart 1989-5-29 6325 Butte East of Mooreville Ridge about 2 air miles north of the Lost Creek Dam south of the west branch of Pinkard Creek 1188 Comment
  CHSC116167  Hemizonella minima Lowell Ahart 2015-6-16 20227 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC51855  Hemizonia congesta subsp. luzulifolia L. P. Janeway 1986-10-19 1943 Butte Between hwy 99 and Thermalito Forebay Picnic Ground. 67 Comment
  CDA7021  Hemizonia congesta subsp. luzulifolia A. C. Browne 1951-8-23 Butte Robinson s Corners, Gridley-Oroville Road. 0 Comment
  CHSC44632  Hesperevax acaulis var. ambusticola Vernon Oswald 1986-5-6 1998 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CAS-BOT-BC310160  Hesperevax caulescens Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SD64391  Hesperocyparis macnabiana Darley F. Howe 1966-9-1 Butte Magalia 580 Comment
  CAS-BOT-BC175994  Hesperolinon californicum A. A. Heller; H. E. Brown 1902-5-8 5504 Butte Berry Canyon (near Clear Creek) Comment
  CHSC84022  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SEINET10493821  Hesperolinon micranthum Mary Susan Taylor 1981-5-21 Taylor 3769 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC113493  Heterocodon rariflorum Lowell Ahart 2014-7-10 19630 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC62101  Heterocodon rariflorum B. Castro 1987-5-21 122 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 463 Comment
  CHSC77442  Heteromeles arbutifolia Tim Stofer 1997-4-29 34 Butte Located 1 mi. from the shooting range on the South Rim Trail off South Park Dr. in upper Bidwell Park. Comment
  CAS-BOT-BC310280  Heterotheca grandiflora Lowell Ahart 1986-11-7 5422 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC42462  Heterotheca grandiflora Lowell Ahart 1987-5-6 5502 Butte Along the dirt road, near the Poe Power House on the east side of the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 280 Comment
  UCR88744  Heterotheca oregona J. T. Howell 1959-9-20 34620 Butte eastern outskirts of Oroville on level of Feather River 61 Comment
  CAS-BOT-BC311009  Heterotheca oregona John Thomas Howell 1959-9-20 34620 Butte Eastern outskirt of Oroville on level of Feather River 60 Comment
  JEPS103460  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CHSC1634  Heuchera micrantha var. erubescens V. Holt 1935-5-5 Butte Feather River Canyon, near Pulga. Comment
  CDA35715  Hibiscus lasiocarpos T. C. Fuller 1969-8-19 18818 Butte North side of Nelson West Rd., ca. 3 miles west of Nelson. 0 Comment
  CAS-BOT-BC203377  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  CHSC27941  Hieracium albiflorum M. S. Taylor 1978-7-18 1677 Butte On w side of Hwy 32 on edge of forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC38056  Hirschfeldia incana R. E. Preston 1983-5-26 385 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 Comment
  CHSC41363  Hoita orbicularis R. A. Schlising; R. Banchero 1980-7-7 3839 Butte Along logging road E of Village of Feather Falls in E part of county. Near head of Little Buckeye Creek. 998 Comment
  CHSC34145  Holcus lanatus L. Ahart 1981-9-15 3156 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC49552  Holcus lanatus Vernon Oswald 1983-6-22 754 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. On the edge of a stream in meadow. 1264 Comment
  UCD84911  Holcus lanatus Alva W. Mitchell 1958-6-6 s.n. Butte Irrigated pasture near Oroville. Comment
  SEINET10968248  Hordeum depressum Mary Susan Taylor 1978-5-7 Taylor 1598 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC285092  Hordeum marinum subsp. gussoneanum John Thomas Howell 1962-6-15 37485 Butte Magalia 731 Comment
  CAS-BOT-BC532315  Horkelia fusca var. parviflora Milo S. Baker 1925-9-5 96 a-25 Butte Soda Springs Ranger Station Comment
  CAS-BOT-BC143976  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  RSA594174  Horkelia tridentata S. O. Mattoon 1970-6-30 43 Butte Southern Cascade Mtns: Pnderosa Way Forest road at Mud Creek, 5 air miles E of Cohasset. 671 Comment
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC64086  Hosackia crassifolia B. Castro; R. A. Schlising, L. P. Janeway 1988-7-30 285 Butte On SW-facing slope above Coon Hollow, along sides of dirt road (USFS Rd 26N74) ca. 1.6 mi NE of the creek. 1813 Comment
  CHSC65557  Hosackia incana L. P. Janeway 1995-6-20 4804 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC48517  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-26 2930 Butte Rancho Bosquelo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On an old channel of the river. 48 Comment
  CHSC6655  Hydrangea M. MacArthur 1968-6-23 287 Butte Ca. 20 ft. SW PSA bridge and 25 ft. NW of Big Chico Creek, Chico State College. 60 Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  CHSC8748  Hydrocotyle verticillata S. Chulasmai 1966-5-20 40 Butte Upper Bidwell Park roadside [Helocsirge spring]. Comment
  UC880782  Hydrophyllum occidentale A. A. Heller 1915-6-26 12030 Butte above Jonesville; Summit of the Sierra Nevada 2133 Comment
  CHSC58920  Hypericum anagalloides Lowell Ahart 1992-8-2 6898 Butte Growing on damp dark clay soil on the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS66777  Hypericum anagalloides H. R. Dutton 1921-1 Butte Chico, Hooker Oak Comment
  JEPS124322  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS115832  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 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
  CAS-BOT-BC133564  Iris hartwegii Mrs. C. C. Bruce 1898-5-1 2408 Butte Doe Mill Comment
  SEINET12046587  Iris hartwegii Unknown 1977-1 45 Butte ca 3 ft. to E side of Vilas Rd. and 0.3 mi NE of jct of Cohasset Hwy and Vilas Rd., Cohasset 945 Comment
  CHSC2205  Iris macrosiphon M. Roberson 1956-4-7 Butte SN of Paradise along Skyway. 426 Comment
  CHSC24780  Iris macrosiphon D. E. Hale 1976-4-10 16 Butte N side of Vilas Rd, ca. 25 m e of Vilas Rd. - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  POM109032  Iris macrosiphon C. C. Bruce 1897-04 2068 Butte Little Chico Comment
  SEINET10469754  Iris macrosiphon Mary Susan Taylor 1980-3-1 Taylor 2344 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CHSC36900  Iris tenuissima J. D. Nishball 1982-4-16 12 Butte Ca. 8.5 mi. se of Chico, off Honey Run Rd., s end of Covered Bridge; Butte Creek Canyon. 115 Comment
  JEPS127565  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approximated 0.25 miles north of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  JEPS104157  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CAS-BOT-BC61879  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut Comment
  CHSC58863  Isoetes nuttallii Lowell Ahart 1992-7-21 6814 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1586564  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1991-6-5 4641 Butte ca 1.5 air mi nw Platte Mt Lookout (between Forest Ranch and Lomo, dirt rd to Minnie-Ha-Ha Mine on Big Chico Creek on w side of Hwy 32) 853 Comment
  RSA606518  Isoetes nuttallii Jon E. Keeley 1981-4-11 7547 A Butte On the SE side of Kunkle Res, ca 1 mile S of Paradise. 600 Comment
  SEINET10874662  Isoetes nuttallii Mary Susan Taylor 1975-4-26 Taylor 516 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78208  Isolepis cernua Lowell Ahart 2000-5-24 8390 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 39 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  CHSC27163  Juglans regia M. MacArthur 1968-6-13 307 Butte Parkinbg lot NE of Building U, Chico State College campus. 60 Comment
  CHSC36891  Juncus L. Ahart 1982-6-1 3527 Butte Along the road, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC96945  Juncus acuminatus Lowell Ahart 2007-7-7 14263 A Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC97299  Juncus acuminatus Lowell Ahart 2007-8-19 14488 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS98527  Juncus articulatus Lowell Ahart 2000-7-11 8567 Butte sides of dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd, rd to Fall River, and the County Rd, 4 air mi NE of Feather Falls 1219 Comment
  CHSC32367  Juncus bufonius var. bufonius J. D. Jokerst 1980-5-15 698 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Hwy. Comment
  CHSC44244  Juncus bufonius var. bufonius V. Oswald; L. Ahart 1988-7-13 3578 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  RSA304353  Juncus capitatus Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch, ca 2 1/2 miles NNE of Honcut, between Marysville and Oroville. 30 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  UC1609271  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte about 1/4 mi w of Lost Creek Reservoir (on an old logging road, n of the dirt road) 1036 Comment
  JEPS120831  Juncus cyperoides Lowell Ahart 2013-7-1 18820 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, 3.5 air miles SW of Forbestown. Comment
  UCD141451  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4.5 miles southwest of Oroville. 30 Comment
  CHSC44443  Juncus dubius Lowell Ahart 1988-6-23 6072 Butte In the meadow, south of the intersection of Black bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC41304  Juncus effusus subsp. pacificus S. C. Morey 1983-7-22 540 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC97335  Juncus effusus subsp. pacificus L. P. Janeway 2007-8-6 9151 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Common forming large dense clumps around the edges of the pond and pedestalled within the pond where moist bottom but no standing water at this time. 776 Comment
  JEPS113849  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west 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 53 Comment
  CDA34642  Juncus effusus var. pacificus L. Ahart 2009-6-3 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  SEINET10472477  Juncus effusus var. pacificus Lowell Ahart 1983-8-16 Ahart 4299 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC33712  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1981-6-13 1335 Butte North of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  CHSC41911  Juncus howellii Lowell Ahart 1983-8-16 4294 Butte Along the banks of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS127086  Juncus kelloggii Lowell Ahart 2016-4-15 20750 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC39889  Juncus leiospermus M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5407 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CAS-BOT-BC110145  Juncus leiospermus var. ahartii Lowell Ahart 1974-6-5 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC123263  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC54165  Juncus leiospermus var. ahartii Lowell Ahart 1991-5-2 6647 Butte On the sides and bottom bottom of a small vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC93499  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 346 Comment
  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
  CHSC50380  Juncus mexicanus Vernon Oswald 1990-6-6 4285 Butte East terminus of Dean Rd, Paradise, in the canyon of the West Branch of the Feather River at Upper Miocene Canal. Bordering the parking area at the canal. 472 Comment
  CHSC49620  Juncus nevadensis Vernon Oswald 1983-6-22 737 Butte Soda Springs Campground near Hwy 32, ca. 4 mi nne of Lomo. Beside Chico Creek. 1112 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC84449  Juncus occidentalis Lowell Ahart 2003-8-6 10473 Butte Along seeps, on the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 988 Comment
  CHSC99758  Juncus occidentalis Lowell Ahart 2008-6-13 14816 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
  CHSC113956  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC78339  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC31129  Juncus oxymeris L. Ahart 1980-7-4 2463 Butte In a small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC102614  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC107589  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  RSA726661  Juncus triformis L. Ahart 2007-6-12 14075 Butte 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 975 Comment
  CDA30217  Juncus usitatus L. Ahart 2009-7-4 15999 Butte On the side of a large shalow pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley 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
  CHSC96886  Juncus usitatus Lowell Ahart 2007-7-11 14291 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
  RSA727521  Juncus usitatus L. Ahart 2007-7-31 14401 Butte On the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  RSA755420  Juncus usitatus L. Ahart 2009-7-4 15999 Butte West side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterfowl Management Area, about 6 air miles southwest of Gridley. 21 Comment
  CAS-BOT-BC236761  Keckiella breviflora Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville 500 Comment
  SD239921  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 Butte Sacramento Valley: Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi ENE (76a^z) of Biggs. 57 Comment
  UC1562422  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte se side Forbestown Reservoir (near the Forbestown Generator, along se side of dirt road) 487 Comment
  CHSC36416  Koeleria phleoides Donald M. Burk 1982-4-24 115 Butte Along top of canyon on N. side of Neal Rd., ca. 0.6 mi. W. of Elliot Spring House. 243 Comment
  CHSC84400  Lactuca saligna Lowell Ahart 2003-8-6 10476 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
  CAS-BOT-BC340533  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte Near Durham Comment
  CHSC110410  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte on the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UC828870  Lagophylla glandulosa A. A. Heller 1914-5-14 11401 Butte treeless plain near Clear Creek Comment
  CAS-BOT-BC341314  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  JEPS103412  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the W edge of the Midway, ca 1 mile N of Richvale. 30 Comment
  JEPS113138  Lamium amplexicaule Lowell Ahart 2007-3-12 13592 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  JEPS119503  Lamium purpureum Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC101984  Lasthenia fremontii Linda Osborne 1980-4-10 3 Butte Chico. Ca. 100 m SE of Notre Dame Blvd., 200 m NE of Skyway. 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
  SD111946  Lasthenia fremontii B. Ertter, Jeff Strachan 1980-5-5 3247 Butte Peter Ahart Ranch, 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  HSC68177  Lasthenia platycarpha J. P. Smith 1973-3-22 5908 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CHSC28687  Lathyrus jepsonii var. californicus M. S. Taylor 1978-7-21 1833 Butte On n side of Oroville-Quincy Hwy in open meadow, ca. 1 mi s of Butte Couty-Plumas County. Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CDA42904  Lathyrus latifolius L. Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC29795  Lathyrus latifolius M. S. Taylor; J. D. Jokerst 1980-6-14 2881 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  SEINET5327336  Lathyrus sativus R. McKee 1916-5-9 40281 Butte Chico Introduction Garden Comment
  CHSC101151  Lathyrus sulphureus Lowell Ahart 2009-5-15 15695 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
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC90045  Layia fremontii Rhonda Posey 1991-4-3 7 Butte Meridian Rd., ca. 12.8 mi n of Chico. Ca. 50 yds. N of Renkow Rd. 70 Comment
  CHSC90592  Layia fremontii Jose Romero 1983-4-20 14 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi s.w. of Oroville. 45 Comment
  UC473555  Layia fremontii L. S. Rose 1931-4-12 Butte Honcut Comment
  UCD133917  Layia fremontii Michael A. Vincent; Ethan H. Freid 1998-4-6 8113 Butte Table Mountain. Comment
  POM284970  Layia fremontii Lyman Benson 1935-3-27 6369 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 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
  SEINET7042711  Layia fremontii A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
Read comments
May 24 2013
  UC1609053  Ledum glandulosum Lowell Ahart 1993-7-29 7132 Butte about 1 1/2 mi se of Bald Mountain (on n side of dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  SEINET10465992  Lemna minor Mary Susan Taylor 1975-10-3 Taylor 944 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC93791  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte In a drain ditch, on the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley. 28 Comment
  RSA718342  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about 1 mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  CHSC107892  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-29 10410 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC89492  Leontodon saxatilis subsp. longirostris R. D. Fischer 2004-6-6 443 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at top of 10 Mile House Road near gated beginning of park property, at Hwy 32. In roadbed. 464 Comment
  CAS-BOT-BC215731  Lepechinia calycina Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi. se of Paradise 500 Comment
  SEINET516280  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte W side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  UCLA64433  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET10448476  Lepidium dictyotum Mary Susan Taylor 1982-4-28 Taylor 4351 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
  CAS-BOT-BC89884  Lepidium nitidum James Jokerst 1985-3-24 2171 Butte Near Serpentine Point. 547 Comment
  SEINET10907264  Lepidium nitidum Mary Susan Taylor 1973-1 Taylor 42 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET11991676  Lepidium nitidum Unknown 1984-1 9 Butte ca 12 mi NNW of Chico, ca 4 mi N of jct of Meridian Rd & Hwy 99, along W side of Meridian Rd 61 Comment
  CHSC103658  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65686  Lepidium nitidum var. nitidum Vernon H. Oswald 1996-3-22 7254 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  JEPS115292  Lepidium nitidum var. nitidum Lowell Ahart, John Dittes 2009-3-20 15506 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CAS-BOT-BC12803  Lepidium perfoliatum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CHSC102965  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley. 21 Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  UCD63945  Leptochloa fusca subsp. fascicularis A. A. Heller 1919-8-13 13354 Butte Between Nelson and Richvale. Comment
  POM65119  Leptosiphon androsaceus A. A. Heller 1902-5-13 5544 Butte Grade between Clear Creek and Paradise Comment
  CHSC44221  Leptosiphon ciliatus V. Oswald; L. Ahart 1988-7-13 3579 Butte Road to High Lakes e of Philbrook Reservoir. Outcropping on the n side of the road. 1859 Comment
  JEPS119765  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  CHSC26732  Leptosiphon filipes M. S. Taylor; M. Hayes 1978-4-14 1561 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC40748  Leptosiphon filipes A. A. Heller 1938-4-11 15023 a Butte East of Chico near the rifle range. 91 Comment
  CHSC45452  Leptosiphon filipes Lowell Ahart 1980-7-20 2476 Butte Near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  CHSC81285  Leptosiphon filipes J. Trizzino 2001-4-22 39 Butte South side of Humboldt Road, ca. 0.5 mi east of intersection with Bruce Road. 112 Comment
  CHSC96995  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1.0 air km west of Mountain House. 884 Comment
  CHSC82718  Leptosiphon parviflorus Tara Morgan 2002-5-7 12 Butte Yankee Hill area around Yankee Hill Rd. located off of Highway 70 east of Lake Oroville. Within the area of the 2001 fire. 546 Comment
  CHSC30275  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
  CAS-BOT-BC341792  Lessingia nemaclada Clarence R. Quick 1964-7-9 64 -63 Butte Slope north of Jarbo Gap Comment
  SEINET10839206  Lessingia nemaclada Mary Susan Taylor 1979-8-4 Taylor 2171 A Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10904896  Lessingia nemaclada Mary Susan Taylor 1979-10-13 Taylor 2274 Butte T23N R4E e center sec 29. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 11.1 mi N of its jct with Concow Road, 1.9 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CHSC33952  Leucothoe davisiae M. S. Taylor; Lowell Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8 mi s of Inskip. 1249 Comment
  SEINET10454481  Ligusticum Mary Susan Taylor 1976-4-27 Taylor 1090 Butte Abundant on N side of Villas Rd, ca. 0.5 mi E of junction of Villas Rd and Cohas set Hwy, Cohasset. Yellow Pine Forest with Calochortus monophyllus. 762 Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  SEINET10840950  Ligusticum grayi Mary Susan Taylor 1981-5-15 Taylor 3750 Butte T22N R5E nw sec 29, Berry Creek quad. End of spur rd 22N84A, ridge SW of Stony Creek, ca. 2.5 air mi due E of Jarbo Gap on Feather River Hwy 70. Yellow Pine Forest; 3100 ft. 945 Comment
  CAS-BOT-BC130567  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC38881  Lilium humboldtii subsp. humboldtii Vernon Oswald 1983-6-9 659 Butte Upper Bidwell Park, Chico, near Brown's Hole. ... Field redacted by CHSC, contact the data manager for more information 195 Comment
  SEINET3992016  Lilium parvum var. luteum E. B. Copeland, Mrs. Austin 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC133049  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  SEINET10495213  Limnanthes alba Mary Susan Taylor 1978-5-6 Taylor 1622 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  JEPS103417  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SEINET6670265  Limnanthes alba var. alba C. T. Mason 1949-4-23 1252 Butte 7 miles south of Oroville, along the east side of State Highway 24 Comment
  CHSC1008  Limnanthes douglasii subsp. rosea Edna Canfield 1904-4-9 Butte Hooker Oak Field. 76 Comment
  CHSC36134  Limnanthes douglasii subsp. rosea Greg C. Halcomb 1978-3-14 2 Butte Ca. 1 mi e of Chico at intersection of Bruce Rd. and Skyway Rd. and 100 yds wnw of Bruce Rd. 70 Comment
  POM86188  Limnanthes douglasii subsp. rosea R. M. Austin 1883-05 s.n. Butte Mesa. 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
  JEPS120655  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC36222  Limosella aquatica L. Ahart 1982-4-29 3400 Butte Peter Ahart Ranch, ca. 2.5 mi n of 1/10 mi e of Honcut. 50 Comment
  CHSC49844  Linanthus dichotomus Vernon Oswald 1990-4-4 4150 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  POM65888  Linanthus dichotomus subsp. meridianus E. B. Copeland 1903-4-11 3030 Butte Chico. Comment
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May 3 2021
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UCD123910  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 miles north of Oroville. 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
  CHSC47691  Lindernia dubia var. anagallidea Lowell Ahart 1980-8-16 2577 Butte The edge of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  CHSC76007  Lindernia dubia var. anagallidea Lowell Ahart; Vernon H. Oswald 1999-8-13 8131 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
  JEPS97415  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte 11/2 mi N and 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  JEPS95950  Lipocarpha aristulata Lowell Ahart 1999-8-13 8146 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC430881  Lithophragma bolanderi Lowell Ahart 1981-4-9 2753 Butte North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  HSC32656  Lithophragma heterophyllum David Johnson 1974-4-20 54 Butte Table Mtn. Comment
  CHSC87426  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-20 116 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along Guardian Trail, south of Pine Trail. UTM: 10609476E 4405711N. 384 Comment
  CHSC51107  Lithophragma parviflorum var. trifoliatum Gerald A. Winter 1989-4-15 12 Butte Ca. 100 yds w of Cherokee Road on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  UC1206542  Lithophragma tenellum E. B. Copeland 1931-6-19 Butte Jonesville at The Summit; Jonesville at The Summit 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
  CHSC38349  Logfia filaginoides Vernon Oswald 1983-4-18 336 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Base of ridge along rim of a volcanic cap. 353 Comment
  CHSC33670  Lolium multiflorum L. Ahart 1981-5-24 2834 Butte Wash in one of the pasture fields on Peter Ahart Ranch, 2 mi e of Honcut. 50 Comment
  CHSC38827  Lolium multiflorum Vernon Oswald 1983-2-2 58 Butte Upper Bidwell Park, Chico, along Yahi Trail on the flat above Diversion Dam. 121 Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC39511  Lolium temulentum Lowell Ahart 1983-6-21 4068 Butte Along the edge of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CHSC42599  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-4-30 1735 Butte Chico Municipal Airport near the e end of Piper Ave. 82 Comment
  CHSC102185  Lomatium marginatum var. marginatum George W. Hartwell 2009-3-19 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 861 Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  JEPS110244  Lomatium marginatum var. marginatum Lowell Ahart 2006-5-8 12606 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC40435  Lomatium utriculatum Lowell Ahart 1985-4-29 4884 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  CHSC54522  Lonicera cauriana Vernon H. Oswald; Lowell Ahart 1991-8-11 4823 Butte Marshy meadow located on the southeast side of Humbug Rd, ca. 0.5 mile northeast of the northeast end of Snag Lake. 1767 Comment
  CAS-BOT-BC200895  Lotus Marcus E. Jones 1911-6-26 s.n. Butte Oroville Comment
  SEINET10451958  Lotus argophyllus var. fremontii Mary Susan Taylor 1980-5-27 Taylor 2665 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10874139  Lotus argophyllus var. fremontii Lowell Ahart 1984-6-8 Ahart 4667 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  SFV1836  Lotus humistratus B. Fuller 1962-5-26 s. n. Butte Sierra Nevada Near Stearns Road and Harrison Road. Rocky hillside near road. 535 Comment
  CDA13324  Lotus nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13170 Butte Sierra Nevada; Approx. 1 mi. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  UC176246  Lotus purshianus var. purshianus A. A. Heller 1913-10-7 11146 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  UC600402  Lotus purshianus var. purshianus H. F. Copeland 1928-8-18 Butte near Butte Creek (neighorhood of Jonesville); Jonesville 1524 Comment
  SEINET10452012  Lotus scoparius Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4691 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CHSC33361  Lotus wrangelianus R. M. Winchell 1980-4-16 8 Butte Bidwell Park e of Chico along dry wash. Comment
  SBBG128781  Ludwigia decurrens E. Padgett 2014-9-12 Butte Sacramento Valley, agricultural fields between Richvale and Hwy 162, E of Midway, next to rice fields 26 Comment
  CHSC11366  Ludwigia palustris Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28457  Ludwigia peploides R. A. Schlising; R. Banchero 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at W margin of county at Sacramento River and Ord Ferry Road; in slough. Comment
  CHSC96862  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River. 486 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
  CHSC35985  Lupinus albicaulis var. shastensis J. D. Jokerst 1982-5-16 1571 Butte Ponderosa Way 0.5 mi N of its jct, with Lower Forbestown Road. 731 Comment
  CAS-BOT-BC198378  Lupinus albifrons Charles Piper Smith 1949-4-16 49104 Butte Bangor, 2.6 miles east, Yuba-Butte Bridge, Loma Rica Road Comment
  CHSC34686  Lupinus albifrons M. S. Taylor 1981-5-5 3605 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CAS-BOT-BC201349  Lupinus albifrons var. albifrons Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC196035  Lupinus albifrons var. collinus Ira L. Wiggins 1925-3-25 1445 Butte On road one and one half miles above Pence on Pence-Magalia road Comment
  CHSC3985  Lupinus albifrons var. collinus D. B. Joley 1967-3-16 16 Butte Few plants on a slope of a hill, ca. 10 feet n of Nelson Bar Rd. and 1/2 mile from turn off on to Nelson Bar Rd., Pentz. 106 Comment
  CHSC92747  Lupinus andersonii L. P. Janeway; Matt Brown, B. Castro, Samantha Mackey Hillaire 2005-6-21 8427 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Lockerman Creek and Cedar Creek, 1.4 km northeast of confluence of Lockerman and Camp Creeks. 1201 Comment
  RSA325884  Lupinus andersonii var. andersonii L. Ahart, P. Ahart 1983-7-29 4250 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  UCR237327  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  NY15811  Lupinus caeruleus A. A. Heller 1940-4-28 15561 Butte Along the roadside between the radio station and Hooker Oak, east of Chico...Belt of the Lower Sonoran Life Zone. Comment
  CDA13329  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13175 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. Comment
  CHSC87796  Lupinus latifolius var. columbianus Paul Maslin 2004-4-6 12 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC25006  Lupinus lepidus var. sellulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  UC1564779  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-6-27 3821 Butte Humbug Rd at Butte Creek House ca 3.3 mi (air) se Jonesville 1767 Comment
  CHSC48567  Lupinus microcarpus var. microcarpus Vernon Oswald 1987-4-27 2347 Butte Forest Ave. ca. 300 ft s of E. 20th St., Chico. 71 Comment
  RSA739693  Lupinus nanus John Dittes, Josephine Guardino 1991-4-19 339 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 air-miles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee., Ca. 3.8 air-miles east of intersection of State Hwy 99 and State Hwy 14. Rock outcrop on plateau west of Cherokee Road near middle tributary of Campbell Creek at east end of Beatsons Hollow. 366 Comment
  SEINET12164075  Lupinus nanus E. J. Baker 1984-1 3 Butte E side of Hwy 70, 1miSE of intersection w/ Hwy 149, 6miNW of Oroville 58 Comment
  UCD109008  Lupinus nanus A. A. Heller 1919-3-29 13105 Butte Cherokee mine. 457 Comment
  SEINET10484149  Lupinus nanus var. vallicola Mary Susan Taylor 1980-5-27 Taylor 2720 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CHSC38514  Lupinus polycarpus Vernon Oswald 1983-3-23 202 Butte Upper Bidwell Park, Chico, 50 ft e of the Omnicron Enclosure (near the n park boundary ca. 1000 ft e of the jct. of Wildwood Ave. and Upper Park Rd.). 86 Comment
  CAS-BOT-BC329275  Lupinus vallicola Lowell Ahart 1980-5-25 2347 Butte Sierra Nevada. Along Ponderosa Way. 500 Comment
  SEINET10940052  Lupinus vallicola Lowell Ahart 1983-5-13 Ahart 3990 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET10491008  Lupinus vallicola subsp. vallicola Taylor 1981-5-1 Taylor 3588 Butte Oroville quad. E side of hwy 70, ca 4 air mi nw of Oroville. Associates: Sherardia arvensis, senecio vulgaris, calochortus luteus. 91 Comment
  SEINET10491011  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4399 Butte Pulga sw quad. Corolla blue. N side of hiway 70, .5 mi w of arch rock tunnel, Ca 25 air mi ne of oroville. In granite gravel; with acer macrophyllum. 472 Comment
  SEINET10472473  Luzula comosa Mary Susan Taylor 1981-4-8 Taylor 3514 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  UCD142129  Luzula comosa M. Vincent 1964-4-11 566 Butte Cherokee Road, beside the Campbell ranch 1 mile from Cherokee (Oroville Rd.). Comment
  CHSC30511  Luzula macrantha J. D. Jokerst 1980-3-23 489 Butte Along Cherokee Flume. 0.5 mi W of Hwy 70, from its S end of Bridge over West Branch Feather River. Comment
  CHSC60591  Luzula macrantha Vernon H. Oswald; Lowell Ahart 1993-4-21 5289 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CDA30014  Lycium barbarum L. Ahart 2009-7-4 16000 Butte At parking lot 32, Gray Lodge Waterfowl Management Area, ~ 6 air miles SW of Gridley. Comment
  JEPS104343  Lythrum portula Lowell Ahart 2003-6-23 10301 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SD5627  Madia bolanderi E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  RSA755346  Madia elegans subsp. densifolia L. Ahart 2009-7-9 16015 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  CHSC58254  Madia elegans subsp. vernalis Lowell Ahart 1992-5-9 6759 Butte North of the road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  JEPS103401  Madia exigua Lowell Ahart 2002-6-21 9749 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
  CHSC43623  Madia gracilis Vernon Oswald 1985-5-28 1780 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. 304 Comment
  JEPS122082  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CAS-BOT-BC342950  Madia gracilis L. P. Janeway 1995-6-19 4800 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of steep slope overlooking Frey Creek 1066 Comment
  RSA725051  Madia gracilis subsp. gracilis L. P. Janeway 2007-6-26 9072 Butte Plumas National Forest; about 160 m west of the French Creek Road crossing of French Creek near the mouth of Ram Creek 622 Comment
  CHSC111156  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Tem Mile House Road, about 1/8 miles west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 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
  CHSC42809  Maianthemum racemosum L. P. Janeway 1987-7-4 2433 Butte Along the Concow Rd towards Jones Mdw ca 1 mi from Bald Mtn. 1786 Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC347383  Malacothrix floccifera Lowell Ahart 1984-7-19 4723 Butte Above the dirt road that is about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  POM85083  Malva nicaeensis C. C. Bruce 1897-04 1919 Butte [name of locality illegible] Comment
  RSA157758  Marah fabacea I. L. Wiggins 1925-3-22 1468 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA31968  Marrubium vulgare L. Ahart 2009-6-12 15845 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10530352  Marsilea vestita Mary Susan Taylor 1980-6-29 Taylor 2989 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  JEPS110231  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  JEPS115307  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico Comment
  SEINET10938065  Matricaria matricarioides Mary Susan Taylor 1982-4-28 Taylor 4347 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
  CAS-BOT-BC348266  Matricaria occidentalis Lowell Ahart 1982-4-29 3392 Butte A little west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  POM173664  Meconella californica H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  SD8258  Meconella californica Mrs. R. M. Austin 1880-1 Butte Comment
  SEINET12091616  Meconella californica S. T. Heaston 1982-1 6 Butte SE of Chico, ca 6.5 mi from jct of Hwy 99 and Skyway off Humbug Rd. on rocky NE slope, ca 600 ft 122 Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CHSC103684  Medicago polymorpha Lowell Ahart 2010-4-30 16589 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
  RSA754793  Medicago polymorpha L. Ahart 2009-5-8 15662 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC32123  Medicago praecox L. Ahart 1977-5-2 1344 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CAS-BOT-BC271135  Melica aristata E. B. Copeland 1932-7-19 s.n. Butte Jonesville, Butte Creek Canyon 1550 Comment
  CHSC42917  Melica aristata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 599 Comment
  UCD87025  Melica californica August L. Hormay 1928-6-6 s.n. Butte Campbellville, East of Chico. Comment
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Feb 18 2013
  SEINET11688662  Melica californica K. R. Pearson 1983-1 19 Butte ca 200 m NNE of Chico Creek, 2 km NW of diversion dam, 3 km NNE of Chico 150 Comment
  CHSC41907  Melica harfordii Lowell Ahart 1983-7-24 4216 Butte On the road cutbank at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC68917  Melica subulata Lowell Ahart 1997-7-11 7753 Butte Along a stream, north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or 2 miles (air) northeast of Stirling City. 1219 Comment
  CAS-BOT-BC262500  Melica torreyana Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  JEPS116074  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast 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
  JEPS115194  Melilotus albus Lowell Ahart 2009-6-19 15934 Butte West of the trail, on the east side of Big Chico Creek, about 40 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
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  CHSC107573  Melilotus indicus Lowell Ahart 2011-8-17 17620 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 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  CHSC111140  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  JEPS108134  Melissa officinalis Lowell Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  CAS-BOT-BC7430  Mentha arvensis f. brevipilosa Amos Arthur Heller 1914-7-11 11561 Butte Chico-Hamilton road, 6 miles NW of Chico Comment
  CHSC51266  Mentha canadensis Lowell Ahart 1990-10-3 6622 Butte Growing on the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek bridge across Lake Oroville. 259 Comment
  CHSC94587  Mentha spicata var. spicata Lowell Ahart 2006-9-13 13319 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS120078  Micranthes californica Lowell Ahart 2012-3-23 17785 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC38680  Micranthes integrifolia Vernon Oswald 1983-1-29 50 Butte Upper Bidwell Park, Chico, along North Rim Trail at about the level of Horseshoe Lake. 140 Comment
  LA209006  Micranthes integrifolia E. B. Copeland; 1929-7-20 369 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC429072  Micranthes odontoloma H. F. Copeland 1930-7-12 s.n. Butte Jonesville 2000 Comment
  UC831274  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 mi n Oroville Comment
  CHSC83971  Microseris acuminata Lowell Ahart 2003-4-8 10037 Butte Pasture field, about 200 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 325 Comment
  JEPS104286  Microseris acuminata Lowell Ahart 2003-4-8 10037 Butte Pasture field, ca 200 yd n of the falls on Coon Hollow, ca 1/2 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 325 Comment
  SEINET10474314  Microseris douglasii Lowell Ahart 1985-4-29 Ahart 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC42967  Mimetanthe pilosa Lowell Ahart 1987-7-3 5770 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS117224  Mimulus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  JEPS32711  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1963-6-5 63139 Butte Arch Rock Tunnel North Fork of Feather River 487 Comment
  SFV3373  Mimulus bicolor M. L. Vincent 1962-4-18 206 Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. In marshy ground near a spring. 480 Comment
  POM43819  Mimulus bicolor C. C. Bruce 1897-05 2107 Butte Forest- Ranch. Comment
  SEINET10570193  Mimulus bicolor Mary Susan Taylor 1978-7-18 Taylor 1683 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  SBBG40472  Mimulus douglasii J. Ingram, A. Ingram 1960-4-5 288 Butte Neal Rd, ca. 2 mi S of Paradise Comment
  CHSC118862  Mimulus guttatus Christopher T. Ivey 2017-5-27 388 Butte Honeyrun Road, about 3 km NE of bridge crossing Butte Creek, wet meadow E side of road. 163 Comment
  UCR190823  Mimulus guttatus 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
  HSC85965  Mimulus kelloggii J. Hunter 1986-3-21 31 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  RSA256661  Mimulus kelloggii Dave Knorr 1974-4-20 137 Butte On Oroville's Table Mtn, near Cherokee Rd. Comment
  UCD85075  Mimulus layneae Dena Grossenbacher; Marisano James 2009-6-7 1032 -b Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  JEPS7098  Mimulus moniliformis Rimo Bacigalupi with L. R. Heckard 1951-8-7 3474 Butte 1/4 mi e Butte Meadows road (at crossing of Chaparral-Butte Meadows road, at very edge of boundary with Tehama Co.); Butte Creek 1325 Comment
  CHSC38706  Mimulus moschatus Vernon Oswald 1983-6-2 614 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 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
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  JEPS121996  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS80654  Mimulus torreyi M. S. Taylor 1981-4-27 3555 Butte ca. 2 mi sw Brush Creek (ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd., ca. 0.5 mi n of Zink Rd.) 1005 Comment
  POM173736  Mimulus torreyi H. F. Copeland 1927-9-2 957 Butte Jonesville. Comment
  SEINET10570287  Mimulus torreyi Mary Susan Taylor 1980-5-27 Taylor 2660 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  RSA80101  Mimulus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road. Comment
  SEINET12331809  Mimulus torreyi L. Ahart, Ahart, P. 1984-1 4725 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  UCD73014  Minuartia californica Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC103951  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC65195  Minuartia cismontana Lowell Ahart 1995-5-30 7588 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  UC1562476  Mitella breweri Vernon Oswald and Lowell Ahart 1990-7-20 4302 Butte ca. 0.25 mi w Butte-Plumas county line (headwaters of creek, between Philbrook Reservoir and Carr Mine); Philbrook Creek 1889 Comment
  SD2102  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville, damp woods 1500 Comment
  CHSC37432  Moehringia macrophylla R. A. Schlising; S. Morey, J. Fuller 1982-5-23 4254 Butte N of Forest Ranch, off Hwy 32 near a serpentine outcrop above West Branch Butte Creek. 868 Comment
  CAS-BOT-BC435073  Mollugo verticillata Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  RSA32319  Mollugo verticillata Willis H. Wheeler 1945-10-11 s.n. Butte US Plant Introduction Garden. Chico. Comment
  CHSC39282  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte 3 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1100 Comment
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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Jul 19 2018
  RSA500423  Monardella lanceolata var. lanceolata Vernon H. Oswald 1989-6-8 3801 Butte Truex Rd just n of the Hwy 70 bridge over the North Fork of the Feather River 335 Comment
  CHSC67987  Monardella odoratissima James D. Jokerst 1989-7-3 3125 Butte Hwy. 70 4.05 mi E of Concow turnoff. Comment
  LA87862  Monardella odoratissima Elizabeth McClintock; 1968-8-1 sn Butte Feather River, Pulga Bridge Comment
  SEINET13948647 Image available Monardella odoratissima Lewis S. Rose 1955-1 55105 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  CHSC26689  Monardella odoratissima subsp. pallida M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1489 Butte At Humboldt Summit, at Butte-Tehama county line. In forest on Butte side. 2133 Comment
  CHSC39669  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Rd., about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC43017  Monardella sheltonii L. P. Janeway 1987-6-8 2178 A Butte 5.7 mi south of Big Bar Mtn (via rd). 792 Comment
  POM252835  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte On a stony open slope in serpentine 23 miles from Oroville River Highway. Comment
  CDA2667  Monochoria vaginalis T. C. Fuller 1976-8-1 20165 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC50333  Montia chamissoi Vernon Oswald 1990-5-17 4218 Butte Meadow near the headwaters of Concow Creek, on the west side of Concow Rd. ca. 0.5 mile south-southwest of Flea Valley. Common in a marshy area along the creek at the foot of the meadow. 1097 Comment
  CAS-BOT-BC444796  Montia diffusa Javier Penalosa 1962-6-18 2453 Butte Near confluence of French and Peavine Crks. 609 Comment
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC101088  Montia fontana subsp. amporitana Lowell Ahart; John Dittes 2009-3-20 15513 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC29412  Montia fontana subsp. chondrosperma Robert Schlising; R. Banchero 1980-6-2 3632 Butte 0.1 mi s of jct Humboldt road and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CHSC33124  Montia linearis M. S. Taylor 1981-5-22 3801 Butte In Flea Valley, ca. 100 ft e of jct Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft n of Sawmill Peak Rd. ca/ 4 air mi e of Magalia. 1127 Comment
  CHSC38633  Montia parvifolia Vernon Oswald 1983-4-24 360 Butte Upper Bidwell Park, Chico, near the north edge of Chico Creek 50 ft w of Parking Area H at Day Camp. 91 Comment
  JEPS98309  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  UCD86606  Muhlenbergia filiformis H. F. Copeland 1929-6-9 s.n. Butte Jonesville. Comment
  CAS-BOT-BC262586  Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise 502 Comment
  CAS-BOT-BC274932  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CAS-BOT-BC83268  Myosurus minimus Lowell Ahart 1985-4-21 4880 Butte Near Wyandotte Creek, south of Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  SEINET10536214  Myosurus minimus Mary Susan Taylor 1974-4-24 Taylor 187 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  POM99618  Myosurus minimus var. filiformis C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  CHSC6049  Nandina domestica M. MacArthur 1968-6-12 147 Butte Location: NW side of LS bld. Near the SW end, Chico State College campus. 60 Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CHSC11950  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville. 1550 Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  CHSC1293  Navarretia intertexta M. Roberson 1956-5-21 Butte SW of Paradise near Skyway. 426 Comment
  JEPS107882  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 51 Comment
  CHSC35115  Navarretia leptalea R. A. Schlising 1980-7-7 3856 Butte E part of county, Lumpkin Ridge, along Lumpkin/La Porte Road, just W of road dropping down to Fall River. 1280 Comment
  CDA40127  Navarretia leucocephala T. C. Fuller 1962-5-17 8717 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  SEINET10496829  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1610 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10902897  Navarretia leucocephala Mary Susan Taylor 1975-4-29 Taylor 539 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC116695  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC91112  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11826 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  JEPS117326  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC28478  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  CHSC60129  Navarretia nigelliformis B. Castro; L. P. Janeway 1992-5-9 450 Butte In bottom of unnamed canyon SE of Neal Road. 70 Comment
  JEPS127003  Navarretia tagetina Lowell Ahart 2016-5-24 20848 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  UC856822  Navarretia tagetina A. A. Heller 1915-5-16 11872 Butte 3 mi from Chico (Chico-Centerville road) Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC1609062  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC7199  Nemophila fallax C. C. (Mrs.) Bruce 1897-5-1 2037 a Butte Big Chico Comment
  CHSC101664  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 yards southwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  RSA769679  Nemophila heterophylla L. Ahart 2009-4-3 15531 Butte North margin of gravel road, east of Cedar Grove Parking Area in Lower Bidwell park, Chico 67 Comment
  UC107251  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  CHSC62466  Nemophila maculata B. Castro; L. Janeway 1991-4-19 442 Butte Ca 10 air mi NE of Oroville, 0.75 mi NW of Oregon Gultch, 0.5 mi S of Montgomery Bar Ravine. 353 Comment
  CHSC10763  Nemophila pedunculata Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  CHSC105956  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile wewst of the Ponderosa Dam. 289 Comment
  JEPS117257  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  UCD110203  Notholithocarpus densiflorus B. F. Smith 1965-10-18 60 Butte 3/4 mile east-northeast of Woodleaf. 1021 Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  CHSC77488  Olea europaea Tim Stofer 1997-4-22 21 Butte The plant was located on the east side of the trail at the shooting range, 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC116375  Oreostemma elatum Sara M. Taylor; Scott Batiuk 2012-7-31 52 Butte Plumas National Forest. Drosera Pond. From Quincy, head west on Hwy 89, right/north on Hwy 422 toward Smith Lake, left/west on 25N20. Continue west on 25N57, left/west on 25N59. UTM Zone 10, 4428806 N, 660224 E. 1610 Comment
  CHSC25281  Origanum majorana K. R. Stern 1977-6-25 Butte Comment
  CHSC48640  Orobanche fasciculata Vernon Oswald 1987-4-14 2324 Butte Garland Rd. 0.3 mi n of Doe Mill Rd. (ene of Forest Ranch). 524 Comment
  CAS-BOT-BC500244  Orobanche uniflora subsp. occidentalis Lowell Ahart 1980-5-29 2359 Butte Sierra Nevada: 5 mi NE of Mountain House 1100 Comment
  CDA42032  Orobanche uniflora subsp. occidentalis H. K. Wagnon 1957-4-28 712 Butte About five miles north of Oroville on road to Cherokee. 0 Comment
  CHSC61330  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte Small bog about 1/8 mile south-west of the Snow Mine, about 2-1/2 miles east of Bald Mountain, about 6-1/2 miles north-east of Stirling City. 1463 Comment
  JEPS93970  Osmorhiza berteroi Vernon Oswald 1998-4-12 8903 Butte between Chico and Forest Ranch (Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. and S. Rim Trail); Upper Bidwell Park (new addition) 396 Comment
  SEINET10454516  Osmorhiza chilensis Mary Susan Taylor 1978-7-19 Taylor 1733 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  CAS-BOT-BC10463  Paeonia brownii Herbert Faulkner Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  UC854374  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville Sierra Nevada 1676 Comment
  CHSC86531  Panicum acuminatum var. acuminatum L. P. Janeway; John Hunt 2003-7-1 7862 Butte Northern High Sierra Nevada. Along east edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek 280 Comment
  CAS-BOT-BC253697  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte Bottom of North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CAS-BOT-BC253700  Panicum capillare Lowell Ahart 1983-7-29 4239 Butte Ca. 0.5 mile E of Milsap Bar, ca. 25 miles NE of Oroville 500 Comment
  CHSC47624  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut. 42 Comment
  CHSC76314  Panicum capillare Lowell Ahart 1999-9-21 8281 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
  UCD89510  Panicum capillare L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CHSC87212  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC2171  Paspalum dilatatum D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  CHSC31621  Paspalum dilatatum L. Ahart 1977-9-20 1578 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  RSA724850  Paspalum dilatatum L. Ahart 2006-9-28 13384 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
  CHSC78964  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CHSC42058  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 609 Comment
  CHSC48900  Pectiantia pentandra Vernon Oswald; Lowell Ahart 1987-7-1 3087 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
  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
  CHSC32589  Pectocarya pusilla J. D. Jokerst; Jeri Donovan 1981-3-21 1259 Butte Ca 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico, in Bidwell Park). Where foothills begin their initial rise. Comment
  CHSC51927  Pedicularis attollens L. P. Janeway 1988-7-29 3123 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC45734  Pedicularis densiflora J. Marr 1988-3-31 17 Butte 1 mi n of Concow Rd, 6 mi w of Hwy 70, 18 mi n of Oroville. 609 Comment
  CHSC90095  Pedicularis densiflora Rebecca L. Hill 1990-4-21 18 Butte Ca. 2 mi e on Humboldt Rd., ca. 50 yds on s side of road. Ca. 2.5 mi sw of Butte Meadows and ca. 27 mi ne of Chico. 1310 Comment
  SEINET12320799  Pedicularis densiflora T. L. Wood 1974-1 30 Butte 100 yards W of Cohasset HWY, 17 mi E of Chico Airport 232 Comment
  CHSC96838  Pellaea andromedifolia Lowell Ahart 2007-5-29 13941 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  SEINET10529789  Pellaea andromedifolia Mary Susan Taylor Taylor 988 Butte Bidwell Park, Chico. Comment
  UC122746  Pellaea andromedifolia Mrs. R. M. Austin April 1883 77 Butte Little Chico Canyon Comment
  SEINET11713847  Pellaea mucronata Unknown 4 s.n. Butte no further locality Comment
  SEINET12326935  Peltiphyllum peltatum Unknown 1980-1 15 Butte ca 17 mi NE of Oroville, ca 175 yds E of Lumpkin Rd, in McCabe Creek 384 Comment
  CHSC39673  Penstemon azureus var. angustissimus Lowell Ahart 1983-6-21 4097 Butte Growing along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  CHSC35217  Penstemon azureus var. azureus M. S. Taylor 1981-5-21 3774 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, in upper Concow Basin, ca. 20 mi n of Oroville. 853 Comment
  RSA712953  Penstemon azureus var. azureus L. Ahart 2006-5-10 12618 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
  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
  UC177597 Image available Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte near Chico; Richardson Springs; Richardson Springs, near Chico, Butte Co. 152 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  UCD124220  Penstemon heterophyllus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  RSA31965  Penstemon heterophyllus subsp. heterophyllus A. A. Heller 1940-6-5 15701 Butte Along the Feather River Hwy east of the first river crossing east of Oroville. Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CDA14076  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1997-7-3 13959 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  RSA402135  Penstemon laetus var. leptosepalus Francis W. Pennell, A. A. Heller 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen Nat'l Foresst. 640 Comment
  UC103112  Penstemon laetus var. leptosepalus D. Cleveland 1882-7-14 141 Butte Sutton House Comment
  CHSC9700  Penstemon neotericus Nancy Mosman 1971-7-3 54 Butte In meadow on n side of Humboldt Road ca. 0.2 mi e of Butte Meadow Ranger Station. 1371 Comment
  NY627343  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371.6 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
  RSA443117  Penstemon personatus L. Ahart, P. Ahart 1984-7-19 4761 Butte About 0.5 mile east of Bald Mountain, about 5 miles NE of Stirling City. 1900 Comment
  NY651290  Penstemon rydbergii var. oreocharis A. A. Heller 1928-7-10 14652 Butte At Butte Meadows Comment
  RSA4460  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville. By Butte Creek. 1500 Comment
  CHSC115451  Pentagramma pallida M. Sutton; C. Yasuda 2013-3-10 13 Butte Feather Falls Trail. 1069 Comment
  CAS-BOT-BC71563  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte about 1/4 mile south of Cox Lane, east of the pole line tower, about 3 1/2 miles northeast of Honcut 100 Comment
  RSA0116107  Perideridia lemmonii Lowell A. Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC40236  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1880 Butte Scotts John Rd. 0.9 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC40242  Perideridia parishii subsp. latifolia Vernon Oswald 1985-6-20 1857 Butte North end of Snag Lake. 1706 Comment
  UC179505  Perideridia parishii subsp. latifolia A. A. Heller 1914-8-7 11649 Butte Butte Meadows 1219 Comment
  CHSC42757  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte On dry red soil in an idle rice field, east of the Western Pacific Railroad, south of Central House Road, about 1 1/2 miles north and 1 mile west of Honcut. 30 Comment
  CHSC108130  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC1345  Persicaria lapathifolia V. Holt 1940-7-16 Butte W. Sacramento Ave., Chico. 54 Comment
  CHSC94656  Persicaria lapathifolia Lowell Ahart 2006-9-28 13371 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
  CHSC31762  Persicaria maculosa L. Ahart 1977-9-20 1580 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS115837  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
  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
  CDA3408  Petrorhagia dubia T. C. Fuller 1963-7-15 10856 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  CHSC42226  Phacelia egena Rusti Gannon 1986-4-3 8 Butte Ca. 6.5 mi ne of Chico, w bank of Mud Creek. Ca. 35 yds nw along creek. 195 Comment
  UC1047036  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 341 Butte Feather River Hwy about 12 mi ne Oroville (base of roadcuts) 152 Comment
  CHSC46564  Phacelia heterophylla subsp. virgata V. Oswald; L. Ahart 1989-7-12 3842 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  CHSC93982  Phacelia mutabilis R. D. Fischer 2004-6-20 769 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows, YPF at north end of Camp Lassen. 1371 Comment
  CHSC48475  Phacelia racemosa Vernon Oswald; Lowell Ahart 1987-6-10 2981 Butte Forest Service road joining Humbug Rd., in the first drainage e of Humbug Rd. 1874 Comment
  CAS-BOT-BC265889  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte Hills 8 miles north of Oroville Comment
  CHSC20453  Phalaris caroliniana Dave Isle 1969-4-18 372 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500+ yards W. of road on Table Mtn.). 289 Comment
  SEINET10508599  Phalaris lemmonii Lowell Ahart 1984-5-10 Ahart 4600 Butte T17N R4E. Ca. 2.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  JEPS104010  Phalaris minor Lowell Ahart 2003-6-16 10286 Butte On the e side of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  UC204880  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte near Nelson Comment
  SEINET10716720  Phalaris paradoxa K. Bridwell 1978-5-25 Bridwell 111 Butte Ungrazed rangeland, ca. 300 yds S of Pentz Rd., ca. 3 mi E of intersection with Hwy 99, ca. 12 mi SE of Chico. Annual Grassland 76 Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  UCD89627  Phleum pratense August L. Hormay 1929-6-28 s.n. Butte Chico Meadows. Comment
  SD3827  Phlox caespitosa E. B. Copeland 1931-6-19 Butte Jonesville, on and below crags west of The Summit 2100 Comment
  CHSC60583  Phlox speciosa subsp. occidentalis Vernon H. Oswald; Lowell Ahart 1993-4-19 5283 Butte Rattlesnake Creek Trail on outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  RSA325180  Phoradendron bolleanum subsp. densum M. S. Taylor, Vernon H. Oswald 1984-4-4 5396 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  CHSC13484  Phoradendron densum T. Brumley 1974-4-28 9 Butte Found ca. .5 mi se of Magalia Reservoir and ca. 5 mi ne of Paradise. 609 Comment
  CHSC4582  Phoradendron densum C. Glascock 1965-3-14 284 Butte On Coutelenc Rd. ca. 0.1 mi. n from its intersection with Magalia-Stirling Ciry Highwy., between road and RR tracks. Near Magalia. Comment
  CAS-BOT-BC141118  Phoradendron serotinum subsp. macrophyllum G. P. Rixford 1914-10-1 s.n. Butte Bidwell Park, Chico Comment
  JEPS122275  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-3-5 19321 Butte About 40 feet north on the northeast corner of Washington Street and Spruce Street, in Gridley. Comment
  CHSC59478  Phyllostachys bambusoides Bryan C. Willingham 1968-12-12 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  CHSC42121  Physalis lancifolia Lowell Ahart 1986-11-9 5439 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
  UC580804  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  UCD126004  Physalis lancifolia Beecher Crampton 1957-9-17 4616 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  JEPS98331  Pilularia americana Lowell Ahart 2000-5-21 8378 Butte 10 air miles NW of: slickens from the Cherokee mine, E side of Clark Road (Hwy 191), about 200 yds S of Dry Creek Oroville; ; <coords cont.: NW 1/4> 60 Comment
  SEINET10470796  Pilularia americana Lowell Ahart 1983-6-6 Ahart 4032 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET10938354  Pilularia americana Lowell Ahart 1984-5-12 Ahart 4603 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  NY34618  Pinus attenuata R. C. Walsh 1987-7-7 297 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC78448  Pinus contorta subsp. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville 1524 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  POM127000  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows. 1280 Comment
  RSA323805  Pinus ponderosa K. R. Fechko 1982-4-11 2 Butte North east part of the county, approx. 1.8 miles south of Tehama county line on west side of Cohasset Road. 976 Comment
  CHSC109525  Pinus ponderosa var. pacifica L. P. Janeway 2012-6-23 10893 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  NY62742  Pinus sabiniana A. A. Heller 1913-4-7 10690 Butte Hills 2 miles north of Oroville Comment
  JEPS105663  Piperia elongata L. P. Janeway, Christine Hantelman 2003-6-19 7852 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek 277 Comment
  CHSC40292  Piptatherum miliaceum Ahart; Jokerst 1985-5-10 4965 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC106875  Plagiobothrys austiniae Lowell Ahart 2011-4-28 17329 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  UCD80165  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-15 SNFN 0082 a Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence. 81 Comment
  CHSC29373  Plagiobothrys fulvus var. campestris L. Ahart 1980-4-30 2138 Butte Near Bangor, about 3 mi e of Bangor-Oroville Highway, along Swedes Flat Road; near bridge over Rocky Honcut Creek. 320 Comment
  UC196289  Plagiobothrys glyptocarpus A. A. Heller 1914-3-16 11202 Butte low hills 8 mi n Oroville Comment
  CHSC104812  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC29254  Plagiobothrys greenei M. S. Taylor 1975-4-29 541 Butte In fields ca. 100 yds s of Pentz Rd., ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. 60 Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  CHSC167  Plagiobothrys nothofulvus Edna Canfield 1904-4-9 Butte Hooker Oak field 76 Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  SEINET10497552  Plagiobothrys nothofulvus Mary Susan Taylor 1973-1 Taylor 37 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC1562356  Plagiobothrys scouleri Lowell Ahart 1990-7-5 6550 c Butte just w Scout Road (on the n side of Humboldt Road); Butte Meadows 1325 Comment
  JEPS104013  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Rd Boat Ramp, on the n side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin road, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 38 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  RSA768983  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte West side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 396 Comment
  SEINET516431  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1974-1 406 Butte Normal size plants, growing on damp red soil at the bottom of a swale, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC19938  Plagiobothrys tenellus M. S. Taylor 1975-3-10 412 Butte Ca. 1/4 mi w of Covered Bridge, on s side of Butte Creek, on the grassy bluffs above the creek. 243 Comment
  CHSC33687  Plagiobothrys tenellus L. Ahart 1981-3-29 2710 Butte Along edge of Ponderosa Way near the Ponderosa Dam, near Forbestown. 350 Comment
  RSA638254  Plantago Michael A. Vincent, E. Freid 1998-4-6 8120 Butte Table Mountain Comment
  CHSC25538  Plantago coronopus Robert A. Schlisng 1974-4-24 3121 Butte Northernmost part of the county, near jct Hwy 99 and Broyles Road. Comment
  JEPS117270  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  HSC97200  Plantago elongata L. Ahart 2004-4-14 10741 Butte S side of Lower Honcut Rd., 100 yds. W of Wyandotte Creek, 1/8 mi. W of Railroad, 1.75 mi. W of Honcut. 27 Comment
  RSA669476  Plantago elongata subsp. pentasperma R. R. Halse 2001-3-28 5976 Butte Along State Hwy 99, 2.3 miles south of its junction with State Hwy 149, near Gold Creek. 40 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
  SEINET8219637  Plantago erecta C. E. Wickstrom 1964-3-3 7 Butte N. rim of Big Chico Creek Canyon, vic. of Salmon Hole, upper Bidwell Park; Chico. Comment
  CHSC41313  Plantago lanceolata S. C. Morey 1983-7-22 549 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA594179  Plantago lanceolata S. O. Mattoon 1978-9-21 49 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  SEINET10499809  Plantago lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4064 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC25444  Plantago major Hayes; Warner 1977-9-11 81 Butte Exactly 9.0 mi from the junction of the Butte Meadows Rd (Humboldt Rd) with Hwy 32. 1249 Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS3266  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte About 3 mies south of Cherokee on road Oroville. 335 Comment
  UC429335  Platanthera sparsiflora Mrs. R. M. Austin Jul 1896 4 Butte near Colby; Butte Creek Comment
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  JEPS119844  Plectritis ciliosa Lowell Ahart 2012-3-23 17791 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
  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
  JEPS119792  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC131905  Plectritis macrocera Mrs. R. M. Austin July 1896 824 Butte Colby Comment
  CAS-BOT-BC244400  Poa annua Lowell Ahart 1987-5-6 5559 Butte Along the N Fork of the Feather RIver, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  JEPS113239  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville 35 Comment
  JEPS122268  Poa annua Lowell Ahart 2014-4-9 19324 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  RSA0116253  Poa bolanderi Lowell A. Ahart 2014-7-10 19628 Butte About 100 yards south of Philbrook Road, about 1 air mile west of Philbrook Reservoir. 1665 Comment
  SEINET10822494  Poa bulbosa Lowell Ahart 1986-4-4 Ahart 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, bout 12 miles south of Oroville. Abundant. Foothill Woodland. 220 ft. "Bulbous Bluegrass." Comment
  UC4609251  Poa compressa Lowell Ahart 1993-7-23 7094 Butte ca 6 air mi ne Feather Falls (w side of Fall River, ca 100 yds w of bridge across Fall River) 1036 Comment
  CHSC38843  Poa howellii Vernon Oswald 1983-3-31 232 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. at about the level of Brown's Hole (2.6 mi e of the power lines). 243 Comment
  UC1609012  Poa howellii Lowell Ahart 1993-6-26 7030 Butte ca 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge); Jackass Flat 1158 Comment
  JEPS121977  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. Comment
  CHSC83100  Poa pratensis P. Moyer 1972-4-16 189 Butte CSUC Campus. S bank of Chico Ck. between Warner St. and New Dorm Bridge. 60 Comment
  SEINET7852326  Poa secunda subsp. juncifolia J. Nachlinger 1984-4-8 911 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CHSC30282  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst, R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. On granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC6747  Poa secunda subsp. secunda Marilyn Lee 1968-4-19 144 Butte Field on W. side of Cherokee Rd., Table Mt. Comment
  CHSC92585  Poa secunda subsp. secunda L. P. Janeway; Jamie Tuitele-Lewis, Matt Brown, Samantha Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek. 1116 Comment
  HSC41104  Poa tenerrima J. P. Smith, J. O. Sawyer 1973-4-14 6055 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC2376  Pogogyne douglasii R. Carter 1965-5-13 197 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC52215  Pogogyne zizyphoroides Linda Osborn 1980-4-22 18 Butte Ca 6 mi n jct of Esplanade on Hwy 99, 250 yds w. Comment
  CHSC7065  Pogogyne zizyphoroides L. Kimbley 1969-5-4 5 Butte Ca. 300 yds. ne of Chico Airport, 4 mi n of Chico. 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
  POM74713  Polemonium occidentale Mrs. R. M. Austin 1895-07 512 Butte Willow Creek (Devils Garden) Comment
  CHSC106868  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC37555  Polygala cornuta T. B. Devine 1977-7-24 437 Butte Beside Humbug Road near P.G. and E. ditch about 3/4 mi N of DeSabla. 853 Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  CDA2832  Polygonum arenastrum L. Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS115106  Polygonum arenastrum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS118036  Polygonum arenastrum Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  SEINET10871688  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4364 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC113440  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CHSC113210  Polygonum aviculare subsp. depressum Lowell Ahart 2014-4-25 19407 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  RSA695544  Polygonum bidwelliae L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10217 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1.5 miles east of Manzanita Ave., Chico. 107 Comment
  SEINET10970707  Polygonum bidwelliae Lowell Ahart 1984-5-7 Ahart 4593 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  UC1136112  Polygonum bolanderi P. L. Johannsen 1936-7-29 971 Butte 1 1/2 mi n junction Butte and Secret Creeks (Plot 12); Paynes Creek Quadrangle Comment
  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
  UC127747  Polygonum convolvulus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA4393  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. 2100 Comment
  UC600498  Polygonum davisiae E. B. Copeland 1929-7-17 Butte in crater e Jonesville 2000 Comment
  SEINET10479643  Polygonum davisiae Mary Susan Taylor 1979-7-21 Taylor 2157 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  CHSC30897  Polygonum douglasii subsp. spergulariiforme M. S. Taylor 1980-9-19 3338 Butte Ca. 100 ft s of Coutelenc Rd, ca. 500 ft e of its jct with the Skyway, Magalia. 609 Comment
  SEINET10479647  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6716 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CAS-BOT-BC419813  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC33762  Polygonum parryi R. A. Schlising; R. Banchero 1980-6-17 3727 Butte N of Magalia and De Sabla, along Skyway, ca 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  UC1609433  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC85156  Polygonum phytolaccifolium Mrs. R. M. Austin July, 1896 154 Butte Sutton House Comment
  SEINET10470877  Polypodium californicum Lowell Ahart 1983-3-28 Ahart 3911 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  SEINET10530412  Polypodium californicum Mary Susan Taylor 1980-4-6 Taylor 2430 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
  CDA42733  Polypodium calirhiza L. Ahart 2005-1-2 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam Comment
  CHSC46173  Polypodium calirhiza Lowell Ahart 1974-3-18 327 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS107675 Image available Polypodium calirhiza Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico 406 Comment
  CHSC6127  Polypogon australis E. Parreno 1968-5-12 96 Butte Alligator Hole, creekbank of Chico Creek in Upper Bidwell Park, Chico. Comment
  CHSC73552  Polypogon australis B. Castro; L. Gehrung 1995-7-26 595 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  CAS-BOT-BC233054  Polypogon interruptus Lowell Ahart 1982-5-28 3442 Butte E of Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CHSC116024  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC31445  Polypogon interruptus L. Ahart 1980-9-10 2638 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  RSA0118753  Polypogon interruptus Lowell A. Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  RSA715583  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SD34489  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte near Lomo, 13 miles west of Chester, near road to Chico Creek Comment
  CAS-BOT-BC233207  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  SEINET11688355  Polypogon monspeliensis Unknown 1985-1 4973 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
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CAS-BOT-BC72300  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-7-24 4213 Butte on the road cutbank at the Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CHSC28380  Polystichum kruckebergii Robert A. Schlising; Marc P. Hayes 1978-6-24 3292 Butte Extreme NW Butte County, just below summit of Humboldt Peak above Jonesville. 2133 Comment
  CHSC61216  Populus alba Lowell Ahart 1993-4-5 6926 Butte On the east side of upper Palermo Road, about 2 miles north-east of Palermo. 121 Comment
  CHSC108758  Populus fremontii subsp. fremontii L. P. Janeway 2011-5-9 10254 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1101393  Portulaca oleracea Malcolm A. Nobs, S. Galen Smith 1949-7-29 1087 Butte on road from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CAS-BOT-BC453686  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC453688  Potamogeton gramineus Vernon Oswald; Lowell Ahart 1987-7-1 3076 Butte Ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi. (air) se of Jonesville. 1935 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  SEINET10483112  Potentilla glandulosa subsp. glandulosa Mary Susan Taylor 1982-5-2 Taylor 4393 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC41286  Prunella vulgaris var. lanceolata S. C. Morey 1983-7-21 506 Butte Cherry Hill Meadow. On the n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC775  Prunella vulgaris var. lanceolata M. Underhill 1952-7-2 Butte 609 Comment
  CHSC82331  Prunus S. Posner 1972-9-23 Butte Garden behind 725 Nord Ave., Chico. Comment
  JEPS120042  Prunus Lowell Ahart 2012-4-20 17901 Butte On the south side of Guardian Trail, about 40 yards southwest 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
  CHSC27236  Prunus lusitanica P. Moyer 1971-11-7 59 Butte CSUC Campus. E of campus annex next to main door of cafe. 60 Comment
  CHSC30422  Pseudobahia heermannii J. D. Jokerst; L. Ahart, M. Taylor 1980-4-7 553 Butte NE corner of the jct of Swedes Flat Rd and Rocky Honcut Cr, (10 mi SE of Oroville). Comment
  CHSC61205  Pseudobahia heermannii Vernon H. Oswald; Lowell Ahart 1993-3-24 5239 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  JEPS98581  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte 5 air miles SW of Oroville Oroville 42 Comment
  CHSC33644  Pseudognaphalium thermale M. Merryman; R. Banchero 1979-9-2 25 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. Roadside fill. 950 Comment
  CHSC41873  Pseudognaphalium thermale Lowell Ahart 1986-10-16 5404 Butte About 1 mile south-west of the Ponderosa Dam, about 3 miles north-west of Forbestown. 457 Comment
  CHSC52384  Pseudognaphalium thermale R. L. Ondricek-Fallscheer 1982-10-30 161 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  POM219373  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  CDA607  Pseudotsuga menziesii T. C. Fuller 1961-11-29 7302 Butte Hwy 40 Alt., Jarbo Gap, Feather River Canyon. Comment
  SEINET10530888  Pseudotsuga menziesii Mary Susan Taylor 1975-2-23 Taylor 388 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  SEINET7042710  Psilocarphus oregonus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC101651  Psilocarphus tenellus var. tenellus Lowell Ahart 2009-4-26 15633 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, in the center of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  UCR231083  Pteridium aquilinum Anna M. Hurlbutt 2009-8-7 020 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  SEINET10899906  Pteridium aquilinum Mary Susan Taylor 1979-3-20 Taylor 1945 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC20254  Pteridium aquilinum var. pubescens W. E. Hartman 1972-4-29 2 Butte Along road side opposite Centerville Cemetary. 213 Comment
  CHSC28649  Pteridium aquilinum var. pubescens M. S. Taylor 1979-3-20 1945 Butte On n side of Hwy 70 following Feather River, begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC44618  Pteridium aquilinum var. pubescens Vernon Oswald 1983-7-26 915 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  CHSC77029  Pteridium aquilinum var. pubescens D. L. Gott 1972-4-26 21 Butte E of Skyway, ca. 0.9 mi n of Stirling City turnoff and ca. 2 feet off road. 707 Comment
  CAS-BOT-BC27144  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 Comment
  SEINET8337729  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC36824  Pterostegia drymarioides F. J. Fuller 1982-4-14 13 Butte Ca. 0.3 mi w of Cherokee Rd, 5.0 mi n of Oroville, 0.7 mi s of Oregon Gulch Rd. 408 Comment
  RSA105838  Pterostegia drymarioides R. M. Austin 1883-05 27 Butte Chico Creek Comment
  POM183147  Pteryxia terebinthina var. californica H. F. Copeland 1930-7-26 1310 Butte Neighborhood of Jonesville. 1677 Comment
  CHSC94920  Pyracantha koidzumii L. P. Janeway 2006-10-4 8904 Butte Sacramento Valley. Oroville Wildlife Area; 180 m east of Feather River, on west bank of narrow slough; 1.4 km south-southeast of the Thermalito Afterbay outlet. 32 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
  JEPS108897  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  SEINET178132  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  UC474253  Pyrola picta H. F. Copeland 1938-8-14 489 Butte Jonesville above Jones Creek Comment
  CHSC8566  Quercus M. MacArthur 1968-6-13 365 Butte NW of EP Building, Chico State College campus. 60 Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  SBBG126082  Quercus X morehus L. Ahart 2012-3-23 17799 Butte S side of Old Humboldt Rd cut, N end of Disc Golf Area, ca 50 yards W of Hwy 32, ca 5 mi NE of Chico 395 Comment
  CHSC101305  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 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
  CHSC25470  Quercus berberidifolia Hayes; Warner 1977-9-11 65 Butte Along Hwy 32 at Toll Gate Way below Forest Ranch, exactly 14.4 mi from the Hwy 99 overpass. 609 Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  UC762329  Quercus berberidifolia R. F. Hoover 1938-8-2 4719 Butte Chico to Paradise road Comment
  UCD45252  Quercus berberidifolia John Thomas Howell 1955-6-15 30492 Butte Volcanic slope, 6 miles from Paradise, on road to Pentz, 1400 ft, Butte County. 426 Comment
  CHSC29708  Quercus chrysolepis J. D. Jokerst 1980-4-21 630 Butte Top of North Table Mt., N of Cherokke Rd. 381 Comment
  CHSC3255  Quercus douglasii Virginia Hagaman 1966-4-23 135 Butte 6 miles north of Chico on highway 32 at edge of road. Comment
  CAS-BOT-BC105144  Quercus kelloggii G. P. Rixford 1912-10-1 s.n. Butte Bidwell Ranch, Chico Comment
  CDA21944  Quercus kelloggii L. Ahart 1999-6-12 8084 Butte Above the rim of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  RSA754366  Quercus kelloggii L. Ahart 2009-6-3 15812 Butte 150 yards SW of Ten Mile House Road, Upper Bidwell park, about 1/2 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  UCD46666  Quercus kelloggii H. F. Copeland 1932-8-17 s.n. Butte Halfway to Humboldt Summit. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  CDA21949  Quercus lobata L. Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  JEPS113214  Quercus lobata Lowell Ahart 2007-3-28 13601 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
  CHSC6044  Quercus nigra M. MacArthur 1968-6-17 168 Butte Half way between LS bld. and Big Chico Creek, Chico State College. 60 Comment
  HSC40652  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte 1.0 mi. E of Hwy. 99 61 Comment
  CHSC46843  Ranunculus bonariensis var. trisepalus Kirsten Tarp 1983-4-3 261 Butte SW of Bangor; vernal pool. 73 Comment
  SEINET10535963  Ranunculus californicus Mary Susan Taylor 1973-1 Taylor 47 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  SEINET10535967  Ranunculus canus Mary Susan Taylor 1975-3-3 Taylor 397 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  CHSC51111  Ranunculus canus var. canus Ginger S. Gough 1989-4-8 22 Butte In gulley, ca. 140 m ne of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  UC204952  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type collected in this region by Hartweg) Comment
  POM269273  Ranunculus muricatus Lyman Benson 1935-3-27 6361 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CDA14071  Ranunculus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13718 Butte Sierra Nevada; NE side of upper end of Paradise Lake above Magalia. Comment
  UC176135  Ranunculus occidentalis A. A. Heller 1913-4-5 10705 Butte above Oroville (n side of Feather River) Comment
  SEINET10866504  Ranunculus occidentalis Mary Susan Taylor Taylor 996 Butte Bidwell Park, Chico. Comment
  SEINET194953  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte Summit on Reather River Hwy 20 mi from Oroville Comment
  CHSC48824  Ranunculus occidentalis var. ultramontanus Vernon Oswald 1984-5-21 1192 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CHSC54308  Ranunculus repens var. pleniflorus Vernon H. Oswald; Lowell Ahart 1991-6-5 4655 Butte Ewalt Camp on the West Branch of Butte Creek, east of Hwy 32 and north of Carpenter Ridge Rd, between Forest Ranch and Lomo. Along the creek. 914 Comment
  UC1594623  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC48830  Ranunculus uncinatus var. parviflorus Vernon Oswald 1987-7-13 3105 Butte Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  SEINET13946322 Image available Rhamnus crocea C. R. Quick 1952-1 52 -293 Butte Near Hog Spring, NE of Chico Comment
  CAS-BOT-BC59877  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1966-7-13 41868 Butte Brush Creek Canyon grade on Cherry Hill Road. 1645 Comment
  CHSC88070  Rhamnus ilicifolia R. D. Fischer 2004-6-6 156 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail just south of the 10 Mile House Road junction. 420 Comment
  JEPS115608  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  POM85713  Rhamnus tomentella subsp. tomentella C. C. Bruce 1898-01 1889 Butte Valley Comment
  UCD117982  Rhododendron occidentale Javier Penalosa 1962-6-18 2457 Butte Near confluence of French and Peavine creeks. 609 Comment
  POM77200  Rhododendron occidentale var. californicum C. C. Bruce 1898-06 2472 Butte Forest Ranch. Comment
  CHSC21041  Rhus aromatica M. S. Taylor 1975-6-30 820 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 ft n of Greenwood Store, Cohasset. 853 Comment
  CHSC78317  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  UC600615  Ribes inerme var. inerme H. F. Copeland 1930-7-25 Butte Jonesville, meadow below cabin Jonesville Comment
  CHSC78079  Ribes nevadense Caleb E. Casey 1999-4-27 Butte Paradise Lake. Found on trail along shore. 777 Comment
  UC725920  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte at foot of the grade leading down from Stirling City 914 Comment
  CHSC38677  Ribes roezlii var. roezlii Vernon Oswald 1983-2-19 89 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near the turn-around at the e end of the park. 207 Comment
  CHSC3020  Robinia pseudoacacia Carl Pejsa 1958-4-19 102 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC74472  Rorippa curvisiliqua Clarence R. Quick 1963-7-16 63 54 d Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  RSA754942  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 A Butte 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 air miles east of Oroville. 260 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC42061  Rorippa palustris var. occidentalis Lowell Ahart 1986-11-14 5458 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
  SEINET10483877  Rosa Mary Susan Taylor 1979-10-12 Taylor 2240 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC91260  Rosa bridgesii L. P. Janeway 2005-5-29 8402 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC39356  Rosa gymnocarpa L. Ahart; P. Ahart 1983-9-21 4464 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 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
  CHSC82390  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, and 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Along the road. 548 Comment
  CHSC43127  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-13 2212 Butte Edge of mdw just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  CHSC6629  Rosa spithamea M. MacArthur 1968-6-17 301 Butte NW yard of Building U on the Chico State College campus. 60 Comment
  CHSC3640  Rosmarinus officinalis Alice L. Stoll 1966-2-16 9 Butte On Chico State College Campus, Chico. Comment
  SEINET10597110  Rostraria cristata A. Arthur Heller 1902-5-13 Heller 5534 Butte Grade between Clear Creek and Paradise. Comment
  CHSC78858  Rotala indica Lowell Ahart 2000-10-15 8707 Butte Strand of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS98374  Rotala indica Lowell Ahart 2000-10-15 8707 Butte 5 air miles S of Oroville (strand of the Thermalito Afterbay, S side of access road to the boat ramp; W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET13711421  Rotala ramosior Lowell William Ahart, Lowell William Ahart 1999-1 8170 Butte 12 Air Mi. SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC37063  Rubus discolor L. Ahart 1982-9-29 3835 Butte Along edge of rd and near Pinkard Creek, ca. 1/10 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  CHSC115684  Rubus glaucifolius Emily Meigs Doe 2015-4-23 25 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Approx. 150 ft. east of Road 19N19, approx. 250 ft. NE of its intersection with Ponderosa Way. 731 Comment
  CHSC45812  Rubus laciniatus L. P. Janeway 1987-6-13 2201 Butte Southeast side of Concow Rd at Flea Valley. Along Flea Valley Cr. 1127 Comment
  CAS-BOT-BC147200  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  RSA699538  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E-side addition along Hwy 32. Located on sandy soil, W side Big Chico Creek near beginning of Yahi Trail. 91 Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC42425  Rubus ursinus Lowell Ahart 1987-5-9 5590 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CDA34628  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte On west side and bottom of a steep bank, 10 yards west of the dredger piles along North Honcut Creek, about 2.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC421615  Rumex crispus John Thomas Howell 1959-9-20 34621 Butte Eastern outskirts of Oroville 60 Comment
  CHSC45385  Rumex dentatus subsp. klotzschianus Vernon Oswald 1985-5-8 1750 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Common in the bottom of a drying pond which was vernally wet. Comment
  CDA42961  Rumex fueginus L. Ahart 2013-6-18 18804 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. Comment
  UCD149829  Rumex lacustris Harry A. George 1967-7-4 s.n. Butte E. of Cresta Power Station. Comment
  SD175847  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 06 343 Butte Along Butte Creek, north of Durham-Dayton Highway. 46 Comment
  CHSC35703  Rumex salicifolius var. triangulivalvis J. D. Jokerst; M. S. Taylor, L. Ahart 1982-4-29 1546 Butte Grey Lodge Waterfowl Management Area, S of Rutherford Rd on dirt road. Comment
  UCD77982  Rupertia hallii Robert E. Preston 2003-7-17 2161 Butte Ca. 1 mi SW of Butte Meadows, along both sides of The Skyway 1447 Comment
  RSA173737  Sagina saginoides H. F. Copeland 1927-9-4 947 Butte Jonesville. Comment
  UC600587  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte above Jonesville; above Jonesville 1700 Comment
  CAS-BOT-BC445728  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CAS-BOT-BC445726  Sagittaria latifolia Alice Eastwood 1919-9-9 s.n. Butte Chinese garden, Marysville Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CHSC113369  Salix babylonica Lowell Ahart 2014-4-9 19348 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS107367  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS119879  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte About 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC11348  Salix laevigata Lowell Ahart 1970-3-18 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  CAS-BOT-BC129581  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  UC446428  Salix ligulifolia E. B. Copeland 1931-6-18 Butte highest Willow Creek meadow Jonesville; , Willow Creek 1550 Comment
  UC600411  Salix ligulifolia E. B. Copeland 1931-6-18 Butte Jonesville 1550 Comment
  CHSC94971  Salix melanopsis Lowell Ahart 2006-10-14 13507 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC11988  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CHSC103226  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road. 63 Comment
  SEINET10937638  Salsola kali var. tenuifolia Mary Susan Taylor 1974-10-11 Taylor 332 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC20058  Salvia sonomensis M. S. Taylor 1975-4-25 493 Butte Along dirt road, ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC31408  Sambucus mexicana Debra Dockrey 1980-4-21 4 Butte Ca. 8 mi N of Chico. 365 Comment
  CAS-BOT-BC238622  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte 8 miles north of Oroville Comment
  SEINET11994764  Samolus floribundus Unknown 1984-1 4762 Butte ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville, Peter Ahart Ranch, along North Honcut Creek 50 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
  CHSC90615  Sanicula bipinnata Chris Ottinger 1983-3-15 17 Butte Ca. 0.6 km sw of Covered Bridge, s side of Butte Creek, 10.2 km ese of Chico. 120 Comment
  UCD127999  Sanicula bipinnata Edw Mckinney 1929-6-19 s.n. Butte Honcut. Comment
  CHSC115282  Sanicula bipinnatifida var. flava Lowell Ahart 2015-4-30 20118 Butte About 1/4 miles south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  JEPS115311  Sanicula crassicaulis Lowell Ahart 2009-4-22 15566 Butte West side of 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
  SEINET12121564  Sanicula crassicaulis Unknown 1984-1 4540 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut on Peter Ahart Ranch 50 Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  UC875484  Sanicula graveolens A. A. Heller 1917-7-29 12856 Butte summit above Jonesville 2133 Comment
  CHSC36539  Sanicula tracyi L. Ahart 1982-6-4 3548 Butte On a lava cap, 1.5 mi e of Camp 18 and ca 8 mi e of Feather Falls. 1000 Comment
  CHSC31003  Sanicula tuberosa M. S. Taylor 1978-7-19 1775 A Butte On e side of Upper Scott's John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC64407  Sanicula tuberosa B. Castro; L. Janeway 1994-7-6 523 Butte Ca 1.5 air mi ENE of Feather Falls (the falls), ca 1 mi W of Jackson Ranch, on main E-W ridge, a few yards off S edge of USFS Rd 21N25Y. 1143 Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  CHSC43961  Satureja douglasii V. Oswald; B. Castro, D. Perske 1988-5-28 3345 Butte Douglas Perske's property located at the end of Bull Creek Rd. e of Cohasset Rd., ca. 1 mi nne of Cohasset School. 890 Comment
  POM92827  Saxifraga californica C. C. Bruce 1897-1 2043 Butte Little Chico Comment
  UC1212526  Saxifraga odontoloma E. B. Copeland 1931-7-20 Butte vicinity of Jonesville (Lassen National Forest); Lassen National Forest 1500 Comment
  CHSC100982  Scandix pecten-veneris L. P. Janeway 2008-4-2 9242 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  CHSC10598  Scandix pecten-veneris Lowell Ahart 1965-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC68453  Schoenoplectus acutus var. occidentalis L. P. Janeway 1986-9-20 1867 Butte Along River Road (Fell Road) about 1 mi south of Chico River Road (River Road). 38 Comment
  CHSC81939  Schoenoplectus acutus var. occidentalis L. P. Janeway 2001-6-13 7171 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of canal next to the road. 30 Comment
  CAS-BOT-BC111652  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge, 1/4 mi south of Skyway, 170 Comment
  JEPS109379  Schoenoplectus subterminalis Dean Wm. Taylor, Tom Engstrom 2004-7-21 19203 Butte Coon Hollow, pond north of Forest Road 26N15 1.8 miles East of junction of Forest Road 25N05 1755 Comment
  SEINET10839824  Scirpus cernuus var. californicus Lowell Ahart 1984-5-12 Ahart 4605 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  JEPS122026  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC56807  Scirpus diffusus L. P. Janeway; R. A. Schlising 1988-8-2 3149 Butte Ca 1 1/2 air mi northwest of Butte Meadows; along Cascade Creek ca 1/4 upstream of the Soda Springs Campground. 1143 Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  CHSC38300  Scleranthus annuus subsp. annuus Vernon Oswald 1983-3-16 187 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 97 Comment
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  CHSC46442  Scribneria bolanderi Lowell Ahart 1989-5-23 6263 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 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
  CHSC36517  Scutellaria californica L. Ahart 1982-5-28 3439 Butte Near Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC42831  Scutellaria californica L. P. Janeway 1987-6-5 2126 Butte Along OroQuincy Hwy 0.5 mi S of Suspension Bridge over Lake Oroville. 320 Comment
  SEINET13947868 Image available Scutellaria siphocampyloides A. A. Heller 1927-1 14397 Butte Along Chico Creek E of Chico Comment
  RSA20868  Sedella pumila C. B. Wolf 1937-3-29 8329 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  UCD101975  Sedella pumila R. J. Goedl 1979-4-16 20 Butte 3.5 miles east of Highway 99 and Chico, 20 feet N of Skyway. 213 Comment
  SBBG17106  Sedum spathulifolium M. Vincent 1962-4-18 211 Butte near Feather River at Hells Town Comment
  CAS-BOT-BC62122  Selaginella hansenii L. P. Janeway 1994-10-23 4759 Butte Brush Creek quad, lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River 441 Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC65799  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  HSC66272  Selaginella wallacei M. S. Taylor, J. D. Jokerst, L. Ahart 1980-4-4 2439 Butte Junction of Rocky Honcut Creek and Swedes Flat Rd., 2 mi. E of Oroville-Bangor Hwy., 10 mi. SE of Oroville 366 Comment
  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
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  CAS-BOT-BC341182  Senecio lugens E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  CHSC116987  Senecio sylvaticus Lowell Ahart 2016-6-4 20939 Butte On the east side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  RSA0060801  Senecio sylvaticus Lowell A. Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2.5 miles (air) northeast of Chico. 206 Comment
  RSA712845  Senecio sylvaticus L. P. Janeway 2006-4-23 8558 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Comment
  CAS-BOT-BC364274  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 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
  CHSC71634  Senecio triangularis Vernon H. Oswald; Lowell Ahart 1998-8-11 9464 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. Along the edge of the creek. 1396 Comment
  CHSC108784  Senecio vulgaris L. P. Janeway 2011-6-7 10364 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC38387  Senecio vulgaris Vernon Oswald 1982-12-19 30 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC40552  Senecio vulgaris Ahart; Jokerst 1985-3-24 4867 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  UCD135859  Senecio vulgaris M. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  CHSC28019  Sericocarpus oregonensis M. Hayes; J. Warner 1977-9-11 63 Butte Humboldt Rd., .1 mi from the Butte Meadows turn at Highway 32. 975 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
  SEINET9759302 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  UCD92594  Setaria parviflora L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CAS-BOT-BC240125  Setaria pumila Lowell Ahart 1987-5-27 5705 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC47641  Setaria sphacelata Lowell Ahart 1977-8-14 1551 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS110304  Setaria viridis Lowell Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS115349  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
  JEPS115247  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC43352  Sidalcea calycosa Lowell Ahart 1979-5-29 1897 Butte On both sides of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC48609  Sidalcea calycosa Vernon H. Oswald 1984-4-1 1113 Butte Humboldt Rd, about mid-way between El Monte and Bruce roads, Chico. 79 Comment
  JEPS118038  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 65 Comment
  CHSC61324  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte On gravel bar along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC61792  Sidalcea gigantea Lowell Ahart 1993-10-3 7269 Butte Along the sides of the west branch of Wildcat Creek, about 2 miles north-east of Coyote Gap. 1402 Comment
  UC600531  Sidalcea glaucescens E. B. Copeland 1929-7-22 Butte Jonesville 1550 Comment
  CHSC44965  Sidalcea hartwegii Cathy Young 1988-4-24 12 Butte Ca. 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  CHSC45945  Sidalcea hartwegii Lowell Ahart 1978-5-16 1734 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC66034  Sidalcea hartwegii A. A. Heller and H. E. Brown 1902-5-9 5512 Butte near Clear Creek; near Clear Creek, Berry Canyon Comment
  SEINET10480006  Sidalcea malviflora subsp. asprella Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4283 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  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
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  SEINET5337143  Silene californica M. J. Williams 1967-4-22 s.n. Butte Road to Feather Falls from Oroville. 244 Comment
  CHSC80519  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET12048437  Sisyrinchium bellum Unknown 1983-1 4313 Butte near Bull Hill Rd., 3.5 mi S of Butte Meadows 1600 Comment
  SEINET12048536  Sisyrinchium bellum Unknown 1984-1 12 Butte 1.8 mi S of Concow Reservoir and .2 mi N of Deadwood Creek 457 Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  POM197247  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek. Comment
  CHSC28529  Solanum americanum M. S. Taylor 1979-9-28 2195 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC42007  Solanum americanum Lowell Ahart 1986-11-7 5417 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC94570  Solanum americanum Lowell Ahart 2006-9-11 13296 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS119632  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  JEPS119911  Solanum americanum Lowell Ahart 2012-10-20 18514 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10546505  Solanum nodiflorum Mary Susan Taylor 1975-10-29 Taylor 970 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
  JEPS120503  Solanum rostratum David Scofield Wilson 2012-8-25 Butte Sacramento Valley. City of Chico; volunteer plant in backyard of 648 Bryant Avenue. Comment
  CAS-BOT-BC157056  Solanum umbelliferum A. A. Heller; H. E. Brown 1902-5-6 5455 Butte Berry Canyon (Near Clear Creek) Comment
  UC104231  Solanum umbelliferum Mrs. R. M. Austin May 1896 140 Butte Little Chico Creek Comment
  SEINET10832641  Solanum umbelliferum Mary Susan Taylor 1981-4-5 Taylor 3502 Butte T21N R4E se sec 11, Berry Creek quad. W side of Dark Canyon Rd, ca. 3 mi s of its jct with Big Bend Rds, ca. 4 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1200 ft. 366 Comment
  SEINET260320  Solidago californica Lowell Ahart 1988-7-24 6130 Butte Ca 1/20 mi NE of the intersection of Ponderosa Way and Lower Forbestown Rd W of Sunset Hill 732 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS115320  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC43001  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC365984  Sonchus asper Lowell Ahart 1980-5-4 2156 Butte Thermalito 65 Comment
  CHSC109152  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC66155  Sonchus asper subsp. asper Vernon H. Oswald; Lowell Ahart 1996-5-27 7669 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC37123  Sorbus scopulina L. Ahart 1982-9-13 3824 Butte Along a stream, near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  HSC95535  Spergula arvensis L. Ahart 2003-6-23 10307 Butte Fallow field on Peter Ahart Ranch, .5 mi. E of Palermo Honcut Hwy., 2 mi. N of Honcut, 12 mi. S of Oroville 30 Comment
  CHSC82262  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC98959  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC66074  Spergularia bocconi Vernon H. Oswald 1996-5-22 7622 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On a bank along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  RSA0116394  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC112692  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte Meadow, 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
  SEINET10483625  Spiraea douglasii Mary Susan Taylor 1977-7-15 Taylor 1410 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  CHSC38893  Spiranthes porrifolia Vernon Oswald 1983-6-9 654 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1400 ft e of Salmon Hole Parking Area. 182 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52206  Stachys ajugoides var. rigida L. P. Janeway 1988-7-29 3096 Butte Along W Br Butte Cr at Lomo. 1158 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  UC884335  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  SEINET12326804  Stachys palustris subsp. pilosa Unknown 1983-1 4288 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  CHSC42939  Stachys pycnantha Lowell Ahart 1987-7-17 5826 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  UC2055631  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  UCD80122  Stebbinsoseris heterocarpa CNPS SN Foothill Team 2005-3-29 SNFN 0068 b Butte CDFG North Table Mountain Wildlife Area, along western border of North Table Mountain Ecological Reserve, outside of Oroville, CA. Plot is ca. 1 mile southwest of parking area, on west-southwest-facing slope approaching 'hollow' area. 362 Comment
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC35038  Stellaria nitens R. Schlising; R. Banchero 1981-5-20 4066 Butte Lumpkin Ridge in E part of county. Comment
  CHSC42486  Stellaria obtusa Lowell Ahart 1987-5-6 5519 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS87165  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
  CHSC46827  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-16 4606 Butte N part of county, S of Humbug Summit, at upper reaches of Willow Creek; meadow edge. 1950 Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  CHSC51044  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1983-7-15 869 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. at the e entrance to Brown's Hole. Road cut. 231 Comment
  CAS-BOT-BC61284  Streptanthus cordatus var. cordatus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Mountains. 1463 Comment
  CDA11951  Streptanthus diversifolius G. F. Hrusa, J. Hart 1989-4-15 5921 Butte Sierra Nevada; Central portion of North Table Mountain. Comment
  UC725556  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  UC1613876  Streptanthus longisiliquus B. Castro and L. P. Janeway with J. Jurewicz 1993-7-6 465 Butte ca. 2.5 mi. s.-s.w. Big Bar Mt. (on n. side of U.S.F.S. RD. 22N84 ca. 1.1 mi. n. & e. of its junction with major spur rd. (Rd. 22N84A) on upper slopes of ridge); Berry Creek quad. 1005 Comment
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Sep 22 2007
  CHSC36690  Streptanthus tortuosus R. E. Preston 1981-6-22 99 Butte Ca. 7 mi ne of the town of Feather Falls. 1280 Comment
  UC1490565  Suaeda calceoliformis Lowell Ahart 1981-11-6 3227 Butte about 12 mi sw Gridley (e of Gray Lodge Waterfowl Management Headquarters, w of parking area, about 0.5 mi w of Pennington Road,) 35 Comment
  CHSC102978  Symphyotrichum bracteolatum Lowell Ahart 2009-8-23 16293 Butte On the east bank of Big Chico Creek, west of the meadow and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UC426982  Symphyotrichum bracteolatum E. B. Copeland 1900-1-1 Butte Jonesville, in and near springs 1500 Comment
  CHSC26454  Symphyotrichum chilense Lowell Ahart 1977-10-15 Butte Peter Ahart Ranch, Honcut. Comment
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  SD50981  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2987 Butte North fork of Feather River, 28 miles from Oroville. Comment
  CAS-BOT-BC98059  Symphyotrichum lentum A. A. Heller 1914-9-3 11760 Butte On the Chico-Hamilton Road 6 miles from Chico Comment
  CAS-BOT-BC98092  Symphyotrichum spathulatum V. Oswald; L. Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  JEPS117382  Symphyotrichum spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC69037  Symphyotrichum spathu