Search Results — 2000 specimen records retrieved (1623 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA755322  Acer macrophyllum L. P. Janeway, B. Castro 2007-7-25 9227 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; 6 m north of Big Chico Creek and about 6 m higher than the creek, between Upper Park Road and Yahi Trail, between Day Camp and the power lines. 91 Comment
  UC138075  Acer negundo var. interior Mrs. R. M. Austin May 1896 804 Butte Sacramento River Comment
  CHSC27204  Acer palmatum P. Moyer 1971-10-8 43 Butte CSUC Campus. Front lawn Admin. Bldg. 60 Comment
  CHSC109650  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 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
  CHSC39672  Achnatherum lemmonii Lowell Ahart 1983-6-21 4087 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 137 Comment
  JEPS108542  Achnatherum lemmonii L. P. Janeway 2006-5-28 8638 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir 856 Comment
  RSA718386  Achnatherum occidentale subsp. californicum L. Ahart 2006-6-24 12859 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CHSC33954  Achnatherum stillmanii M. S. Taylor; L. Ahart 1981-8-15 4178 Butte Both sides of Skyway, 1.8 mi s of Inskip. 1249 Comment
  CHSC34039  Achnatherum stillmanii L. Ahart 1981-7-7 2934 Butte Along the edge of the dirt road to the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 800 Comment
  CHSC49586  Achnatherum stillmanii Vernon Oswald 1985-6-30 1872 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  SBBG119796  Achnatherum stillmanii L. Ahart 2006-6-24 12852 Butte Cohasset Ridge, E side of dirt rd (Ponderosa Way), ca. 3.5 air mi NE of Cohasset 1130 Comment
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  SEINET11838910  Achyrachaena mollis Unknown 1978-1 13 Butte Small population ca 2 mi N of Chico on State Hwy. 99 67 Comment
  CHSC43282  Acmispon americanus var. americanus Lowell Ahart 1987-8-30 5867 Butte On a large 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
  CHSC94785  Acmispon americanus var. americanus Lowell Ahart 2006-10-8 13441 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET12765095  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  CHSC104752  Acmispon grandiflorus var. macranthus L. P. Janeway 2010-6-19 10022 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC34810  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-29 3808 Butte Both sides of Chino Ridge, ca. 2 mi nw of its jct with French Creek, ca. 4 air mi s of Coyote Gap, ca 17 air mi ne of Oroville. 853 Comment
  SEINET12765093  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  CHSC111345  Acmispon wrangelianus Lowell Ahart 2012-5-2 17956 Butte On dry bare soil, 30 yards south of the fence, about 80 yards northeast of the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 115 Comment
  CHSC27914  Adenocaulon bicolor M. S. Taylor 1978-7-19 1734 Butte Cherry Hill Campground, on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  POM120395  Adiantum aleuticum C. C. Bruce 1887-06 s.n. Butte Butte Creek Comment
  SEINET10529974  Adiantum aleuticum Mary Susan Taylor 1976-5-5 Taylor 1117 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  SEINET7728123  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CHSC41988  Adiantum jordanii Lowell Ahart 1975-3-7 704 Butte Along Ponderosa Way, about 1 1/2 miles south of the Ponderosa Reservoir, north-west of Forbestown. 426 Comment
  CHSC28465  Aegilops triuncialis R. A. Schlising 1979-5-30 3427 Butte Richvale Vernal Pools, south of jct of Hwy 162-to-Oroville and Hwy 99, along latter across from Thermalito Afterbay. Comment
  CHSC30288  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31739  Aegilops triuncialis L. Ahart 1976-5-2 1089 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119888  Agoseris grandiflora var. grandiflora Lowell Ahart 2012-6-5 18174 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC50642  Agoseris heterophylla Lowell Ahart 1990-6-16 6509 Butte On the south side of the dirt road, just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  POM33404  Agoseris heterophylla var. heterophylla C. C. Bruce 1898-05 s.n. Butte [No locality information provided] Comment
  CAS-BOT-BC13342  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1072 Comment
  CHSC115189  Agoseris retrorsa Lowell Ahart 2015-4-27 20090 Butte On the northside 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) of Oroville. 304 Comment
  CHSC49703  Agrostis avenacea Vernon Oswald 1985-5-20 1775 Butte Between the north edge of Hwy 162 and Thermalito Afterbay ca. 1 mi e of Hwy 99. 35 Comment
  CHSC117594  Agrostis capillaris B. Castro; Melinda Carlson 2007-10-25 1681 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek within surrounding disturbed riparian forest. Arroyo Chico land grant area. 39 Comment
  CHSC41912  Agrostis elliottiana Lowell Ahart 1983-6-26 4166 Butte Near Bean Creek Road, about 1/4 mile south of Little Bald Rock, about 20 miles north-east of Oroville. 1000 Comment
  CAS-BOT-BC127368  Agrostis exarata Lowell Ahart 1982-5-28 3440 Butte Sierra Nevada. East of North Honcut Creek near the Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CHSC64250  Agrostis exarata S. C. Morey 1983-8-3 694 Butte Chico Meadows. On the e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC71206  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte On the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1562417  Agrostis exarata Lowell Ahart 1990-5-21 6475 Butte 1/4 mi s, 4/10 mi w of Pacific Heights Road, 4 1/2 mi sw of Oroville Feather River 30 Comment
  CHSC36527  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CAS-BOT-BC139436  Agrostis hyemalis A. A. Heller 1914-8-6 11647 Butte In Chico Meadows. 1219 Comment
  UC600601  Agrostis idahoensis E. B. Copeland July, 1929 Butte Jonesville Comment
  CAS-BOT-BC138853  Agrostis microphylla Lowell Ahart 1980-7-20 2473 Butte At Big Bald Rock. 1100 Comment
  SEINET10510279  Agrostis microphylla Lowell Ahart 1988-5-28 Ahart 6007 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville, Butte County. Uncommon. Valley Grassland. 37 Comment
  CAS-BOT-BC139080  Agrostis pallens Lowell Ahart 1980-7-29 2494 Butte Along Swedes Flat Road. 320 Comment
  CHSC42402  Agrostis scabra Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10901958  Agrostis scabra Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4220 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC28561  Agrostis stolonifera M. S. Taylor 1978-7-21 1796 Butte Lake Madrone, at its junction with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC30712  Aira caryophyllea M. S. Taylor 1980-5-27 2704 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  SEINET11688666  Aira caryophyllea T. B. Devine 1980-1 673 Butte on cliffs next to Skyway ca 10 mi E of Chico Comment
  CAS-BOT-BC138413  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2174 Butte Thermalito. 65 Comment
  SEINET10510827  Aira elegantissima Watts 1974-5-1 Watts 30 Butte Found un upper Bidwell Park, Chico, near Horseshoe Lake. Comment
  CAS-BOT-BC445315  Alisma lanceolatum Lowell Ahart 1974-5-28 s.n. Butte 1/2 mi. west on Central House Road, Honcut. 150 Comment
  CAS-BOT-BC445433  Alisma triviale Lowell Ahart 1986-11-9 5449 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
  CHSC84021  Alisma triviale Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC2057  Allium amplectens N. Maxwell 1929-4-20 Butte Paradise. 487 Comment
  POM169682  Allium amplectens A. A. Heller, H. E. Brown 1902-5-7 2917 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC460731  Allium amplectens H. E. Brown 1897-4-15 172 Butte Near Clear Creek Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  CAS-BOT-BC465436  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  SEINET12048533  Allium cratericola Unknown 1984-1 80 Butte ca 50 yds. W of Cherokee Rd., on North Table Mountain. ca 6 mi N of Oroville 396 Comment
  SEINET12046121  Allium howellii J. D. Mott 1978-1 19 Butte .5 mi E of Monk's store, Cohasset Stage Comment
  JEPS49152  Allium hyalinum Robert Ornduff 1967-4-15 6942 Butte s Table Mountain (field at junction of Cherokee road and Chico-Oroville road) 82 Comment
  CHSC75936  Allium jepsonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Incomplete Lat./Long. on label is '39 51 N; 121 34 W']. 740 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
  CHSC36953  Allium membranaceum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3761 Butte 0.6 mi W of Forbestown, along Forbestown Road. 902 Comment
  SEINET194958  Allium membranaceum A. A. Heller 1938-5-28 15113 Butte Along Feather River Hwy E side of Jarboe Pass 22 mi from Oroville 610 Comment
  CAS-BOT-BC132071  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. Se. of Oroville on road to Wyandotte 121 Comment
  CAS-BOT-BC476714  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CHSC84168  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  UC176143  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte e Chico (bottoms along creek); Big Chico Creek Comment
  SEINET10478440  Alnus rhombifolia Mary Susan Taylor 1975-10-4 Taylor 961 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
  CHSC25502  Alopecurus carolinianus L. Ahart 1977-4-19 1523 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31727  Alopecurus saccatus L. Ahart 1980-5-10 2236 Butte Ca. 2.5 mi n and 1/8 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC8197  Alopecurus saccatus Dave Isle 1969-4-18 373 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500 + yards W. of road on Table Mtn.) 289 Comment
  HSC100810  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte ~1/4 mi. S of the parking area, N Table Mountain, 4 1/2 (air) mi. NE of Oroville. 372 Comment
  CHSC72246  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte About 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  CHSC94649  Amaranthus albus Lowell Ahart 2006-9-28 13364 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
  CHSC113539  Amaranthus californicus Lowell Ahart 2014-9-23 19880 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
  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
  JEPS118040  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  UCD169384  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 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
  SEINET10483109  Amelanchier pallida Mary Susan Taylor 1980-5-8 Taylor 2598 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC45748  Ammannia coccinea L. P. Janeway 1988-6-29 2902 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  CHSC76935  Amsinckia intermedia Ida Ryan 1893-3-1 Butte Rancho Chico. Comment
  RSA0090974  Amsinckia verna A. A. Heller 1939-3-23 15354 Butte Along the highway near Wick s Corner. Comment
  JEPS93817  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC35672  Ancistrocarphus filagineus R. E. Preston; R. A. Schlising 1982-4-25 265 Butte Lake Oroville, ca. 1/2 mi NE of Lime Saddle Powerhouse, ca. 4.5 mi SE of Paradise. 280 Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC45415  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservoir, about 2 1/4 miles north-west of Strawberry Valley. 1005 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CAS-BOT-BC84694  Anthemis cotula A. A. Heller 1923-8-13 13830 Butte Chico Comment
  JEPS113809  Anthoxanthum odoratum Lowell Ahart 2007-6-1 13968 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 30 Comment
  RSA505433  Antirrhinum cornutum R. C. Bacigalupi, Howard Whisler 1957-7-26 6041 Butte Along Humbug Road, 3.1 miles below and south of Nimshew. 366 Comment
  CHSC83895  Aphyllon purpureum Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  CHSC44152  Apocynum androsaemifolium V. Oswald; L. Ahart 1988-7-29 3638 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC118801  Aquilegia formosa Mrs. R. M. Austin 1890-1 478 Butte Colby Comment
  CHSC100970  Arbutus menziesii Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15489 Butte East side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SBBG50849  Arbutus menziesii D. B. Marcum 1969-4-12 38 Butte Yankee Hill, Rd 70 640 Comment
  CAS-BOT-BC407722  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  JEPS118642  Arceuthobium campylopodum B. Castro and L. P. Janeway 2002-7-7 1378 Butte High Cascade Range. Along logging spur road, 2.1 mi NE of Bald Mountain Lookout and 0.6 mi SW of Jones Meadow. Comment
  RSA633000  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD163032  Arctostaphylos manzanita D. O. Burge 2015-7-15 1759 Butte Butte Creek watershed, below Doe Mill Ridge. 530 Comment
  CAS-BOT-BC24411  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Huboldt Grade, about 12 mi. from Chico. Comment
  CAS-BOT-BC24300  Arctostaphylos mewukka Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown. 457 Comment
  CHSC3574  Arctostaphylos mewukka Judy Lee Potter 1966-2-26 Butte 5-6 miles north of Paradise (Magalia area). Comment
  RSA32000  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC725336  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte on Pentz-Magalia Rd 4 mi below Paradise Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  CHSC34803  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-21 3780 Butte E side of rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi NE of Magalia. 1188 Comment
  POM219427  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  SD3565  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 Butte Above Jonesville 2050 Comment
  UC426930  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte above Jonesville (on high ridges) 2050 Comment
  UC478486  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte ridge e the Summit; Jonesville 2100 Comment
  CAS-BOT-BC46722  Arctostaphylos patula M. S. Taylor 1981-3-24 3441 Butte S. side of Hwy 70 just e. of Heinz Creek, ca. 1 mi. e. of Pulga. 487 Comment
  LA42219  Arctostaphylos patula H. F. Copeland; 1932-6-29 A 7 Butte Jonesville, the Summit Comment
  UCD53437  Arctostaphylos patula J. I. Mallory 1970-8-20 376 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1432 Comment
  UCD51946  Arctostaphylos truei John Thomas Howell 1975-6-15 51090 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET11989220  Arctostaphylos truei J. T. Howell 1975-1 51094 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48286  Arctostaphylos viscida subsp. viscida C. R. Quick 1941-7-23 41 -17 Butte Big Bar Mt. Meadow Comment
  CAS-BOT-BC48296  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51083 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  UC195408  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC35047  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-28 4115 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek at white Table Mountain. 1828 Comment
  SEINET10932254  Arenaria macrophylla Mary Susan Taylor 1981-5-11 Taylor 3690 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CHSC117314  Aristida oligantha L. P. Janeway 2016-8-9 12148 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  UC203846  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte uplands between Pentz and Dry Creek Comment
  SEINET11665616  Aristida oligantha Unknown 1977-1 1464 Butte Peter Ahart Ranch, Honcut, Valley grassland 50 Comment
  CAS-BOT-BC400432  Aristolochia californica John Thomas Howell 1967-6-22 42644 Butte 3 miles ne. of Pulga Bridge - Canyon of the Feather River North Fork Comment
  RSA20867  Aristolochia californica C. B. Wolf 1937-3-29 s.n. Butte Sacramento Valley, 2 mi S of Chico. 58 Comment
  UC171426  Arnica dealbata A. A. Heller 1913-6-7 10824 Butte near Stirling (West Branch of the North Fork of the Feather River); North Fork of the Feather River 914 Comment
  CHSC11850  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville. Open Pine Woods. 1600 Comment
  CAS-BOT-BC90283  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte Chico, on Big Chico Creek Comment
  RSA0039299  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  RSA769901  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg.) of Honcut, 6.6 mi. SE (116 deg.) of Gridley 27 Comment
  CHSC43782  Arum italicum Vernon Oswald 1987-5-4 2369 Butte Bidwell River State Park near the boat ramp just n of the Washout. 41 Comment
  CHSC12608  Arundo donax S. Posner 1972-9-28 Butte Ca. 300 yds w of Nord Ave and ca. 250 yds s of Sacramento Ave, behind Trans-Pacific Gardens apartments (725 Nord Ave.) Chico. Comment
  CAS-BOT-BC400630  Asarum hartwegii Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC400635  Asarum hartwegii A. A. Heller 1919-5-18 13174 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC3347  Asclepias cordifolia Robert L. Smith 1966-4-4 75 Butte Salmon Hole, 6 miles NE of Chico. Little Chico Creek. Comment
  CHSC62090  Asclepias cordifolia B. Castro 1987-5-21 119 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  POM76153  Asclepias cordifolia C. C. Bruce 1897-05 s.n. Butte Little Chico Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  SEINET10961641  Asclepias eriocarpa R. Carter 1966-7-6 Carter 465 Butte 7 mi E of Oroville on E side of Feathervale, 0.23 mi S of intersection of Wyandotte-LaPorte Rds. 244 Comment
  CHSC20492  Asclepias fascicularis M. S. Taylor 1975-6-25 791 Butte Ca. 100 ft w of Mud Creek, dam area ca. 1/2 mile n of Richardson Springs Hotel, ca. 6 mi n of Chico. 121 Comment
  CHSC40364  Asclepias fascicularis Lowell Ahart 1985-6-30 5074 Butte Along the road at the intersection of Forbestown Road and Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC6561  Asclepias fascicularis R. Carter 1966-7-6 464 Butte Found ca. 7 mi. E of Oroville on NE corner of intersection of Miners Ranch Rd. and Mt. Ida Rd. 243 Comment
  CHSC46468  Asclepias speciosa Vernon Oswald 1989-6-26 3813 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of the s gate. 18 Comment
  CHSC28880  Aspidotis californica M. S. Taylor 1980-2-17 2356 Butte Ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  HSC96985  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico, along Yahi Trail above Brown's Hole 213 Comment
  SEINET10474436  Aster oregonensis subsp. californicus Lowell Ahart 1985-8-15 Ahart 5165 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC192797  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CHSC30780  Asyneuma prenanthoides M. S. Taylor 1980-9-12 3336 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the Hwy on a dirt road. 975 Comment
  CHSC44606  Athyrium filix-femina var. cyclosorum Vernon Oswald 1987-7-13 3108 Butte Willow Creek ca. 0.3 mi w of Humbug Rd., ca. 3.25 mi (air) ese of Jonesville. 1828 Comment
  CHSC94559  Athyrium filix-femina var. cyclosorum Lowell Ahart 2006-9-11 13271 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
  UC398876  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  UCD97614  Atriplex prostrata L. Ahart 1982-10-11 3855 Butte west of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CHSC111715  Avena barbata Lowell Ahart 2012-6-2 18134 Butte Along the sides of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC40643  Avena barbata Ahart; Jokerst 1985-3-24 4865 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  RSA768984  Avena barbata L. Ahart 2010-5-23 16727 Butte Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 0.25 air miles west of Highway 32, about 9 air miles northeast of Chico 413 Comment
  CHSC2122  Avena fatua H. Silberman; D. Isaac 1949-5-9 Butte W side football field, CSC campus. 57 Comment
  RSA518702  Azolla filiculoides Lowell A. Ahart 1990-5-20 6473 Butte About 1/4 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road, about 4.5 miles south-west of Oroville 30 Comment
  CHSC89489  Baccharis pilularis R. D. Fischer 2004-8-22 441 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 large mdw. 217 Comment
  SEINET10839232  Baccharis pilularis subsp. consanguinea Lowell Ahart 1985-2-17 Ahart 4838 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CHSC100481  Baccharis salicifolia Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15443 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
  RSA758832  Bacopa eisenii Peter Fritsch, Boni Cruz 2005-8-9 1789 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  CHSC50099  Balsamorhiza sagittata Vernon Oswald 1990-5-12 4203 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  CAS-BOT-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
  CHSC31682  Bergia texana L. Ahart 1974-7-19 553 Butte Peter Ahart Ranch, Honcut. 45 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
  JEPS113568  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 29 Comment
  CAS-BOT-BC102105  Bidens cernua John Thomas Howell 1961-9-22 36725 Butte Bank of Feather River, Oroville 53 Comment
  CHSC66355  Bidens frondosa Vernon H. Oswald 1996-6-20 7833 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NW corner of Tract 2, Sanctuary II. 33 Comment
  CAS-BOT-BC412960  Bistorta bistortoides H. F. Copeland 1920-8-12 132 Butte Jonesville 1219 Comment
  UCD73334  Blennosperma nanum Chuck Hughes 2008-3-26 25 Butte North Table Mountain. 396 Comment
  SEINET11836643  Blennosperma nanum Unknown 1978-1 12 Butte ca 20 yds N of Skyway, 3.7 mi E of jct Hwy 99 & Skyway, 6.7 mi SE of Chico 207 Comment
  CHSC25323  Boechera platysperma M. Hayes; M. S. Taylor, R. Schlising 1977-8-17 42 Butte Collected at the very ne corner of Butte County, less than 1/2 mi west of Humboldt Peak, 150 ft from the county line in a meadow. 2026 Comment
  UC478515  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville 1550 Comment
  CHSC94272  Boechera rectissima Lowell Ahart 2006-7-16 12969 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC75484  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Road. 21 Comment
  SEINET10644682  Bolboschoenus glaucus Lowell Ahart 1982-7-10 Ahart 3674 Butte On dry bare soil on bottom of dry duck pond, 1/4 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC110100  Bothriochloa laguroides subsp. torreyana L. P. Janeway 2012-6-13 10872 Butte Northern Sierra Nevada Foothills. East side of Thermalito Diver-sion Pool (Feather River) just south of the railroad bridge over the Pool, 0.6 km north of Thermalito Diversion Dam, between the Pool and the railroad tracks. 75 Comment
  UC1751224  Botrychium minganense Timothy B. Devine 1986-8-10 896 Butte beside Willow Creek 1/2 mi N of jct with Colby Mt. Road 1554 Comment
  UC1751226  Botrychium montanum Timothy B. Devine 1985-7-14 852 Butte Jones Creek at jct with Humboldt Road 1615 Comment
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Oct 11 2007
  UC955483  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-25 9780 Butte Jonesville 1554 Comment
  CHSC43058  Boykinia major L. P. Janeway 1987-6-26 2321 Butte SW end of Logue Meadows. 1325 Comment
  CAS-BOT-BC145680  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1/8 mile west of Oroville Quincy Highway, 1.25 mile south of the Berry Creek School. Northeast of Oroville, section 5. 400 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
  CHSC6163  Brachypodium distachyon E. Parreno 1968-4-28 76 Butte NE of Covered Bridge, Chico. 60 Comment
  CHSC38060  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CHSC38046  Brassica rapa R. E. Preston 1983-1-9 376 Butte In ditch on w side of Aguas Frias Rd, 1.2 mi n of Ritchvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CHSC31618  Brickellia californica Lowell Ahart 1973-8-3 273 Butte Ahart Ranch. On gravel bars on North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94576  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side 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
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CAS-BOT-BC127678  Brickellia greenei John Thomas Howell 1959-9-26 35089 A Butte On serpentine at Pulga Bridge, Feather River Canyon 417 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  JEPS117274  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  UC153257  Briza minor Dr. E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  SEINET10472610  Brodiaea californica Lowell Ahart 1985-6-30 Ahart 5084 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET12048535  Brodiaea californica Unknown 1984-1 13 Butte ca 9 m NE Chico & 100 yds in Big Chico Creek 183 Comment
  CAS-BOT-BC482216  Brodiaea californica subsp. californica A. A. Heller 1938-5-22 15106 Butte Plentiful near Chico airport 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
  CHSC29094  Brodiaea minor M. S. Taylor; J. D. Jokerst 1980-5-15 2620 Butte Ca. 1/2 mi e of Cohasset Rd, ca. 3 mi n of Chico. 91 Comment
  CHSC80778  Brodiaea minor Vernon H. Oswald 1998-7-3 9245 Butte East slope of Little Butte Creek Canyon in Paradise, ca. 0.1 mi north of the boundary of Bille Park along a continuation of the Bille Park Nature Trail. 487 Comment
  SEINET10971334  Brodiaea minor Mary Susan Taylor 1980-5-31 Taylor 2761 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte Open disturbed area, 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
  JEPS106265  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  SEINET10509555  Bromus caroli-henrici Lowell Ahart 1984-5-31 Ahart 4655 Butte On the Peter Ahart Ranch, ca. 1.3 mi N and 1/8 mi E of Honcut, ca. 12 mi S of Oroville; Valley Grassland; 50 m. 50 Comment
  CHSC90832  Bromus catharticus Lowell Ahart 2005-5-2 11767 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC156074  Bromus diandrus Lowell Ahart 1987-5-6 5549 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC11332  Bromus hordeaceus Lowell Ahart 1971-4-25 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS110114  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  SEINET10835844  Bromus hordeaceus P. Young 1972-5-16 Moyer 186 Butte S bank Chico Crk. between Warner St. and New Dorm Bridge. 61 Comment
  JEPS106269  Bromus inermis subsp. inermis Lowell Ahart 2004-7-23 11307 Butte On the west side of Philbrook Reservoir Road, about 20 yards south of the bridge across the West Branch of the Feather River, about 1 1/2 miles (air) northwest of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1507 Comment
  CHSC44452  Bromus japonicus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  CHSC49511  Bromus japonicus Vernon Oswald 1987-5-28 2935 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  CAS-BOT-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  CHSC27704  Bromus laevipes Robert A. Schlising; Coleta Lawler 1978-5-27 3281 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road. Comment
  JEPS106211  Bromus laevipes Lowell Ahart 2004-6-2 10988 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown 752 Comment
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  SEINET10507668  Bromus mollis Mary Susan Taylor 1980-5-27 Taylor 2643 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  RSA654633  Bromus orcuttianus G. Fred Hrusa, T. D. Wilfred 1996-7-8 13090 Butte Near Old railroad Grade Rd., Paradise Lake Dam, Approx. 3 m. N of Magalia 800 Comment
  UC392233  Bromus orcuttianus E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC161963  Bromus rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CAS-BOT-BC161614  Bromus sterilis Peter H. Raven 1953-5-9 5429 Butte 8 miles from Bangor on Oroville road. Comment
  UC1609516  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 Comment
  SEINET11688466  Bromus sterilis Unknown 1985-1 4956 Butte 10 m N of E branch of Potter Ravine, ca 2.25 mi N of Oroville Dam 350 Comment
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC71265  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte Below of W of a large seep, W of the lone oak tree, W of the cow chute on the W side of Cherokee Road, North Table Mountain, about 7 mi (air) N of Oroville. 396 Comment
  UCR263566  Bulbostylis capillaris Lowell Ahart 2000-6-27 8513 Butte Sierra Nevada Mtns., Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville 994 Comment
  RSA88126  Calamagrostis koelerioides J. T. Howell 1951-8-19 28154 Butte 2 miles west of Pulga. 366 Comment
  SEINET10457150  Callitriche heterophylla Mary Susan Taylor 1975-4-26 Taylor 529 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
  CHSC114988  Callitriche marginata Lowell Ahart 2015-4-28 20062 -A Butte 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  JEPS119795  Callitriche marginata Lowell Ahart 2012-5-4 17989 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
  UCSC000453  Callitriche verna E. B. Copeland 1932-1 s.n. Butte Jonesville Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 Comment
  CHSC7125  Calochortus albus James M. Watson 1969-4-23 10 Butte 1 mi ne of Oroville on Cherokee Road. 304 Comment
  RSA377250  Calochortus albus M. Vincent 1962-4-16 200 Butte One mile W of Paradise on Honeyrun Rd. Butte Creek Canyon. Comment
  SEINET7067138  Calochortus luteus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626369mE, 4388455mN. Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CHSC31343  Calochortus monophyllus Herb Allan McLane 1980-4-25 11 Butte 10 ft. e of Ponderosa Way, Plumas National Forest, MDM. 390 Comment
  CHSC3827  Calochortus monophyllus R. L. Adams 1964-4-2 67 Butte S. roadside 1/2 mi. W. Ten Mile House on Hwy. 32, 7 mi. E. Chico. Comment
  CHSC90184  Calochortus monophyllus Thomas M. Scott 1989-4-19 9 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  SEINET7067153  Calochortus monophyllus A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  CAS-BOT-BC492595  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 s.n. Butte Near Paradise in the lower Sierra Nevada, in the Lower Transition Zone 600 Comment
  POM118215  Calochortus monophyllus B. O. Clark 1915-4-12 213 Butte Near Paradise in the Lower Sierra Nevada 600 Comment
  RSA481906  Calochortus monophyllus Aaron Liston 1988-3-15 697 -1 Butte East of Cohasset, Ponderosa Way, T24N, R2E 500 Comment
  JEPS55641  Calochortus superbus Marion Cave 1967-5-16 Butte 4 mi n Oroville (on road to Paradise) Comment
  SEINET10469609  Calochortus tolmiei Mary Susan Taylor 1973-1 Taylor 29 Butte Vicinity of Paradise; Yellow Pine Forest. Comment
  UCD14851  Calochortus tolmiei Tamara Kan 1991-5-11 13 Butte 21.3 mi. north of the town of Oroville, along Route 70. 670 Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  CHSC38330  Calycadenia ciliosa Vernon H. Oswald 1983-8-10 976 Butte Upper Bidwell Park, Chico, ca. 1400 ft N of Upper Park Rd. along the trail up to the north rim near the power lines. 152 Comment
  CAS-BOT-BC273293  Calycadenia fremontii H. M. Hall 1930-8-11 12875 Butte Humboldt Road, 8.2 miles from Chico 381 Comment
  CHSC97005  Calycadenia multiglandulosa B. Castro; L. P. Janeway 2005-6-5 1481 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  CAS-BOT-BC270008  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 Comment
  CHSC44368  Calycadenia oppositifolia Lowell Ahart 1988-5-30 6033 Butte Along Poe Power House Road, about 1/10 mile north of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  CHSC84731  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7856 Butte Northern Sierra Nevada Foothills. Serpentine outcrops on west side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 296 Comment
  POM253182  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  UC935692  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 mi n of, on Richardson Springs Rd. Chico Comment
  UCD129789  Calycadenia oppositifolia M. Vincent 1963-6-6 374 Butte 1 mile west in Mt. Meadow from Nelson Bar Road. Comment
  UC1971681  Calycadenia spicata G. D. Carr 1971-6-5 559 Butte Larkin Rd. 1.1 mi SW of jct with W Oroville Dam Blvd., near Oroville Comment
  UCD129791  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles southwest of Oroville Dam Blvd. Comment
  UC1971668  Calycadenia truncata 1977-7-7 2034 Butte 2.3 mi SE of Oroville - Quincy Hwy on Big Ridge Road NW of Oroville 628 Comment
  CHSC113477  Calyptridium umbellatum Lowell Ahart 2014-7-10 19637 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC69112  Calyptridium umbellatum Lowell Ahart 1997-8-1 7789 Butte Around rocks, near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC221233  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  CHSC62105  Calystegia occidentalis subsp. occidentalis L. P. Janeway 1993-7-2 4428 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Rd 22N84 2.6 mi from Rd 23N28 and 1.8 mi past its crossing of Stony Creek. 993 Comment
  SEINET178480  Calystegia polymorpha E. B. Copeland 1931-7-4 674 Butte Jonesville Comment
  POM38436  Camissonia graciliflora C. C. Bruce 1897-05 1957 Butte Near Chico. Comment
  CAS-BOT-BC160852  Camissonia tanacetifolia subsp. tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Hiwy 97, Butte Creek Comment
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  CAS-BOT-BC37263  Cardamine breweri H. F. Copeland 1920-5-20 s.n. Butte Jonesville. 1219 Comment
  CHSC2399  Cardamine californica R. Carter 1965-3-2 150 Butte Along bank of Big Chico Creek 350 yds. NW of Police Pistol Range on Centennial Ave. 8 yds. N of road. 152 Comment
  CHSC28963  Cardamine californica J. D. Jokerst 1980-2-24 451 Butte Along edges of Mud Cr 0.5 mi E of community of Richardson Springs. 243 Comment
  JEPS119569  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC94092  Cardamine californica var. integrifolia R. Fischer 2005-1-1 683 Butte Chico. Collected from Bidwell Park, adjacent 10 Mile House Road, at the north end of park property and east side of Big Chico Creek. 219 Comment
  CAS-BOT-BC37878  Cardamine oligosperma A. A. Heller 1914-4-14 11290 Butte Hills 8 miles north of Oroville. In a grain field 8 miles north of Oroville. Comment
  SEINET10448560  Cardamine oligosperma Mary Susan Taylor 1981-4-5 Taylor 3498 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UCD114525  Cardamine parviflora A. A. Heller 1914-4-14 11290 Butte 8 miles north of Oroville. Comment
  POM95602  Cardamine pensylvanica C. C. Bruce 1897-05 2064 Butte Little Chico 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
  RSA699523  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east side addition along Hwy 32. Along Guardian Trail north of Disk Golf Course 314 Comment
  CHSC6027  Carex amplifolia M. MacArthur 1968-6-19 241 Butte Ca. 30 ft. S of the Esplanade bridge over Big Chico Creek, along N side, Chico State College. 60 Comment
  CAS-BOT-BC17902  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC37757  Carex angustata J. D. Jokerst; R. A. Schlising 1982-10-7 1649 Butte West of and adjacent to the Skyway (not conspicuous from road) 1.1 miles south of Inskip. 1432 Comment
  CHSC84747  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1091 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  SEINET7549688 Image available Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. Pulga quad. 1091 Comment
  UC600699  Carex aurea H. F. Copeland 1920-8-1 171 Butte Jonesville Comment
  RSA4411  Carex aurea E. B. Copeland 1930-6-23 s.n. Butte Jonesville. 1500 Comment
  SEINET10466741  Carex aurea Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4191 Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  CHSC25460  Carex barbarae Hayes; Warner 1977-9-12 104 Butte Along the middle branch of Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  CHSC43915  Carex barbarae L. P. Janeway 1987-6-8 2167 Butte Sandy flat along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  CHSC65785  Carex barbarae Vernon H. Oswald 1996-4-10 7345 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sacramento Valley. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On a levee bank on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. 33 Comment
  SEINET10653008  Carex barbarae Lewis S. Rose 1939-6-5 Rose 39199 Butte Honcut. 30 Comment
  SEINET11635242  Carex barbarae L. P. Janeway, Oswald, V. H. 1989-1 3220 Butte E side Butte Cr, 1,8 mi S of Biggs-Princeton Rd (Afton Rd) 18 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  JEPS105631  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1100 Comment
  JEPS116081  Carex densa Lowell Ahart 2009-5-23 15730 Butte 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 236 Comment
  SEINET7556723 Image available Carex densa L. P. Janeway 2003-6-8 7820 Butte Pulga 7.5' quad. High Cascade Range. Flea Valley. Meadow at head of Concow Creek. Comment
  SEINET8027659 Image available Carex densa L. Janeway, Gog, L 2008-1 3183 (A & B) Butte Bidwell Park. Comment
  CAS-BOT-BC19997  Carex feta A. A. Heller 1928-6-16 14620 a Butte Butte Meadows. Comment
  CHSC105486  Carex feta B. Castro 2010-6-19 100028 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC105511  Carex fracta Lowell Ahart 2010-9-21 17199 Butte On damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC37065  Carex fracta L. Ahart 1982-9-29 3837 Butte On banks of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC43115  Carex fracta L. P. Janeway 1986-9-1 1837 Butte NE-facing slope above Philbrook Reservoir. 1767 Comment
  CHSC44292  Carex fracta Vernon Oswald 1988-6-20 3408 Butte East of Humboldt Rd. 1.4 mi ne of Lomo. Along the edge of the W. Branch of Butte Creek at the bottom of a ravine. 1292 Comment
  CHSC45050  Carex fracta Vernon Oswald 1983-7-19 881 Butte Humbug Summit Rd. 1.3 mi n-e of its jct. with the Skyway n of Inskip. 1554 Comment
  SEINET10823215  Carex fracta Lowell Ahart 1982-9-29 Ahart 3837 Butte Small & normal size. On damp soil on banks of Pinkard Creek, 1.5 mi n of Lost Creek Reservoir Dam, 3.5 mi nw of Strawberry Valley. Yellow Pine Forest. 1200 Comment
  JEPS87706  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CHSC42814  Carex hirtissima L. P. Janeway 1987-6-13 2214 Butte Mdw just NE of Jct of Concow Cr and the rd to Flea Mtn. 1188 Comment
  CHSC47058  Carex hirtissima L. P. Janeway 1989-5-17 3241 Butte Drying wet area along Forbestown Rd 9.2 mi E of Oroville-Quincy Hwy, and 0.1 mi W of Lower Forbestown Rd. 798 Comment
  CHSC52267  Carex infirminervia L. P. Janeway 1986-9-1 1828 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  CHSC52918  Carex jonesii L. P. Janeway; R. A. Schlising 1988-8-2 3151 Butte Along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground; ca 1 1/2 air mi NW of Butte Meadows. 1143 Comment
  SEINET4285869 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UC1133395  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se of Butte Meadows (Lassen National Forest); Lassen National Forest 1554 Comment
  UC175309  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  CHSC42816  Carex lemmonii L. P. Janeway 1987-5-10 2043 Butte Mdw at jct of Skyway and Doe Mill/Humbug Rd; just N of Da Sable Reservoir. 838 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 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
  CHSC49389  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-22 3048 Butte Just below saddle between Coon Hollow and Chips Cr. 1920 Comment
  CHSC103223  Carex multicaulis L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9979 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC112441  Carex multicaulis Lowell Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC43900  Carex multicaulis L. P. Janeway 1987-6-5 2147 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at French Cr. 640 Comment
  CAS-BOT-BC32162  Carex multicaulis Lloyd W. Swift 1934-5-8 106 Butte S Challenge 914 Comment
  SEINET11634492  Carex multicaulis M. S. Taylor 1981-1 3435 Butte along Feather River Hwy 70 just NE of Pulga to Cresta Powerhouse, ca 20 mi NE of Oroville 518 Comment
  CHSC51511  Carex nebrascensis L. P. Janeway 1987-5-10 2044 Butte Meadow at junction of Skyway and Doe Mill/Humbug Road (just N of DeSabla Reservoir). 838 Comment
  CHSC44125  Carex nervina V. Oswald; L. Ahart 1988-7-26 3623 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2026 Comment
  CHSC31673  Carex nudata L. Ahart 1976-4-12 1061 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  CHSC88364  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC44952  Carex praegracilis L. P. Janeway 1988-6-14 2762 Butte Northwest side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC65783  Carex praegracilis Vernon H. Oswald 1996-4-10 7347 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. 33 Comment
  CHSC61511  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte In a small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC52871  Carex straminiformis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3138 Butte Ridge SE from Snow Mtn. Along N-facing ridgetop. 2103 Comment
  CAS-BOT-BC116733  Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  SEINET10750078  Carex subfusca Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2497 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 36. Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1661 Comment
  CDA42898  Carex texensis L. Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CAS-BOT-BC115307  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows. 1219 Comment
  CHSC105823  Carex utriculata Lowell Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  JEPS106386  Carex utriculata Lowell Ahart 2004-8-2 11326 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CAS-BOT-BC115068  Carex vesicaria L. P. Janeway; C. A. Janeway 1986-8-31 1811 Butte Along Philbrook Reservoir at Picnic Area on NE side of the lake. 1691 Comment
  CHSC47143  Carex vesicaria Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  SEINET7580175 Image available Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Oroville 7.5' quad, Northern Sierra Nevada foothills, west side of Morris Ravine arm of Thermalito Diversion Pool (Feather River), 2.0 km north northeast of Thermalito Diversion Dam. 68 Comment
  SEINET10785808  Carex xerophila John Thomas Howell, Gordon H. True 1969-4-9 Howell 45490 Butte Magalia. 701 Comment
  CHSC4604  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus. Comment
  CAS-BOT-BC249118  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  UC885148  Castilleja affinis subsp. affinis A. A. Heller 1916-4-13 12319 Butte e of Chico; Stilson Canyon Comment
  CAS-BOT-BC249591  Castilleja applegatei subsp. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia 731 Comment
  UC196055  Castilleja applegatei subsp. pinetorum A. A. Heller 1914-7-23 11646 Butte edge of forest about Chico Meadows 1219 Comment
  UC726497  Castilleja applegatei subsp. pinetorum A. A. Heller 1942-6-5 16498 Butte 3 mi w Pulga Comment
  SEINET10549337  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-7-18 Taylor 1701 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC1811  Castilleja attenuata P. Delaplane 1965-4-6 5 Butte Along W. side of Cohasset Rd. ca 1/4 mi. S.W. of intersection of Cohasset Rd. and Keefer Rd., Chico. 152 Comment
  JEPS117215  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  UCD122342  Castilleja campestris L. Ahart 1970-4-4 36 Butte Peter Ahart Ranch, near Honcut. 45 Comment
  JEPS4554  Castilleja campestris subsp. campestris R. F. Hoover 1938-4-24 3252 Butte 3 mi e Richvale Comment
  CHSC3841  Castilleja exserta Lloyd Dunkel 1965-4-11 23 Butte In pasture, ca. 100 yards n e of Cactus Ave. at Manzanita Ave., Chico. 32 Comment
  CHSC43167  Castilleja exserta Douglas Rand 1978-4-12 17 Butte Ca. 2.5 mi se of Municipal Airport and 1 mi nw of Pleasant Valley High School. 60 Comment
  CHSC113234  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC90141  Castilleja exserta subsp. exserta Dennis Chambers 1981-4-24 16 Butte Cal State Chico Range approximately 1.7 mi north on Meridian Road off of Hwy 99, east 0.7 mi on north side of road. 65 Comment
  CHSC43766  Castilleja lacera Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  CHSC59356  Castilleja lacera J. L. Guardino 1992-4-18 17 Butte Souther rim of Chico Creek Canyon, 1.7 mi e of Oak Halloe Ln. 268 Comment
  UC426961  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville 1500 Comment
  CHSC1724  Castilleja pruinosa H. Summers 1929-3-11 Butte Richardson Springs Road. 152 Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  CHSC81312  Castilleja tenuis J. Trizzino 2001-4-25 51 Butte Humbug Road, 6 mi north of Steel Bridge, west facing hillside. 914 Comment
  UC426964  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville 1500 Comment
  CHSC54336  Caulanthus lasiophyllus Lowell Ahart 1991-5-8 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  OBI5725  Ceanothus cordulatus H. F. Cofeland 1927-9-2 232 Butte Jonesville 1524 Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  UC1070967  Ceanothus cordulatus C. G. Albertus 1933-7-25 48 Butte just s Thompson's; Chico quad 1280 Comment
  CAS-BOT-BC48812  Ceanothus cuneatus John Thomas Howell 1955-6-14 30441 Butte Magalia 731 Comment
  SEINET12210971  Ceanothus cuneatus M. P. Howe 1984-1 12 Butte Doe Mill Summit 579 Comment
  RSA755786  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2007-3-27 DOB 815 c Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1 road mile from Centerville Road on Bean Flat Road, 15.1 kilometers 74 degrees true ENE of Chico. 243 Comment
  CHSC50338  Ceanothus diversifolius Vernon Oswald 1990-5-14 4211 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CAS-BOT-BC47958  Ceanothus integerrimus Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC50817  Ceanothus integerrimus A. A. Heller 1913-6-7 10827 Butte West Bracnh of the North Fork of the Feather River near Stirling 914 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC3371  Ceanothus integerrimus Robert L. Smith 1966-4-2 9 Butte Paradise 4 miles w of postoffice. Comment
  RSA25632  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UC1070773  Ceanothus integerrimus P. L. Johannsen 1936-7-17 930 Butte 1.2 mi s Butte Meadows; Paynes Creek quad., Lassen Nat. For. 1341 Comment
  CAS-BOT-BC50713  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1980-9-10 2645 Butte Sierra Nevada - 7 miles east of Milsap Bar 1200 Comment
  CAS-BOT-BC52005  Ceanothus prostratus Anna Head 1921-6-25 s.n. Butte ridge East of Lake Center Camp, Feather River Region Comment
  RSA481917  Ceanothus prostratus Aaron Liston 1988-3-15 6972 Butte East of Cohasset, Ponderosa Way 500 Comment
  SEINET10493652  Ceanothus prostratus Mary Susan Taylor 1981-4-16 Taylor 3542 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  SEINET13946050 Image available Ceanothus prostratus A. A. Heller 1915-1 11971 Butte Chico Meadows in the Sierra Nevada; 4000 ft alt. 1219 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
  CHSC20725  Ceanothus velutinus M. S. Taylor 1975-8-31 898 Butte Scattered on n side of Humboldt Rd, ca. 3 ft w of Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  LA45120  Ceanothus velutinus E. B. Copeland; 1930-6-29 424 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC52423  Ceanothus velutinus var. velutinus Anna Head 1921-7-11 s.n. Butte Indian Pk, Feather River Region Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  UC2026880  Celtis occidentalis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west parking area, Lower Bidwell Park, Chico. Comment
  CHSC106238  Celtis sinensis L. P. Janeway; B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  UC179660  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte hills 8 mi n Oroville Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CDA7091  Centaurea calcitrapa W. Gilbert, R. Dodd 1970-7-22 Butte South side of Highway 32 to Lake Almanor, northeast of Forest Ranch, 19.5 miles northeast of Chico. 0 Comment
  RSA726481  Centaurea cyanus L. Ahart 2007-5-16 13893 Butte About 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  JEPS98599  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UCD80047  Centaurea melitensis CNPS SN Foothill Team 2005-5-24 SNFN 0172 a Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico creek, about 75 m from the canyon rim. 338 Comment
  CHSC296  Centaurea solstitialis R. M. Staley 1952-7-15 Butte Paradise. Comment
  NY444425  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte At Chico Comment
  CAS-BOT-BC281209  Centaurea stoebe subsp. micranthos W. Gilbert; R. Dodd 1970-7-22 s.n. Butte N side of Highway 32 W of California Forestry Station, Forest Ranch, NE of Chico Comment
  SEINET10454818  Centaurium Mary Susan Taylor 1980-6-29 Taylor 2993 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
  CHSC62110  Centaurium tenuiflorum L. P. Janeway 1993-7-2 4424 A Butte Plumas National Forest. Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swaybe Hill to Big Bar Mtn). 926 Comment
  SFV5834  Centaurium venustum M. L. Vincent 1968-6-5 766 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CDA39704  Centaurium venustum L. Ahart 1998-7-1 8021 Butte Northwest of the lone oak tree, about 1/8 mile northwest of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM130643  Centaurium venustum E. B. Copeland 1903-7-27 3487 Butte Chico. Comment
  CHSC21039  Centromadia fitchii M. S. Taylor 1975-10-4 950 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC10568  Cephalanthus occidentalis var. californicus Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42972  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC64040  Cerastium fontanum subsp. vulgare S. C. Morey 1983-8-4 722 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC30877  Cerastium glomeratum J. D. Jokerst 1979-4-2 1164 Butte Top of North Table Mt, immediately S of the jct of the east edge of Mt. 396 Comment
  JEPS122187  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UC203620  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte low hills 8 mi. n. Oroville Comment
  CAS-BOT-BC388259  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC388262  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CHSC108979  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte In shallow water in the pond, under trees, about 5 yards south of the table at the old homestead, about 70 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CAS-BOT-BC137001  Cercocarpus betuloides var. betuloides Lowell Ahart 1979-4-6 s.n. Butte 3 miles north-west of Bangor, along N. Honcut Creek 100 Comment
  LA203122  Chaenactis douglasii var. douglasii E. B. Copeland; 1931-7-6 692 Butte Jonesville 1900.0 Comment
  SD8743  Chaenactis glabriuscula R. M. Austin 1883-1 Butte Comment
  CHSC6636  Chamaecyparis lawsoniana M. MacArthur 1968-6-12 367 Butte S side of Administration Building, Chico State College campus. 60 Comment
  JEPS105900  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  CDA32012  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC175344  Chamaesyce maculata A. A. Heller 1913-9-16 11139 Butte e Chico (hills near Big Chico Creek) 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
  CHSC52022  Chamaesyce ocellata Steven Triano 1988-9-18 252 Butte Pasture ca 300 ft e of Hwy. 32 and 2.5 mi w of its jct. with Hwy. 99. 121 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  CAS-BOT-BC69449  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 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
  RSA4659  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  SEINET10529914  Cheilanthes gracillima Mary Susan Taylor 1978-7-21 Taylor 1840 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  SEINET10479018  Chenopodium botrys Mary Susan Taylor 1979-10-5 Taylor 2226 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  SEINET10479078  Chenopodium pumilio Lowell Ahart 1985-10-12 Ahart 5203 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC94657  Chenopodium strictum var. glaucophyllum Lowell Ahart 2006-9-28 13368 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC99490  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-7-23 15147 Butte North edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  HSC100729  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte NE of Hooker Oak, Upper Bidwell Park, Chico, S end of cement barrier that controls water flow into Mud Creek. 69 Comment
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  CHSC93990  Chimaphila umbellata R. D. Fischer 2004-6-20 778 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In the western woods above the pond. 1371 Comment
  CHSC94161  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  JEPS50845  Chlorogalum angustifolium H-M. Beard 1967-6-26 65 .1217 Butte Comment
  SEINET10472636  Chlorogalum angustifolium Mary Susan Taylor 1978-5-7 Taylor 1592 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  SEINET3450920  Chondrilla juncea Unknown 2003-7-10 10372 Butte Forbestown, Forbestown, about 2 miles air northwest 290 Comment
  RSA489567  Chorizanthe polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CHSC39074  Chorizanthe polygonoides var. polygonoides R. A. Schlising 1980-4-6 3545 Butte E of Chico along Skyway, 3.5 mi S of Paradise. 213 Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  CHSC25468  Chrysolepis sempervirens Hayes; Warner 1977-9-11 86 Butte On Humboldt Rd. exactly 1.1 mi below Humboldt Summit on the Butte-Tehama County line. 1859 Comment
  CHSC46802  Chrysolepis sempervirens R. A. Schlising; B. Castro, L. Janeway 1988-7-30 4653 Butte 4.1 miles N of Inskip along Skyway/Humbug Road, at junction with Bull Hill Road to Butte Meadows. 1566 Comment
  SEINET10938010  Chrysothamnus nauseosus Mary Susan Taylor 1975-9-19 Taylor 920 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC27572  Cicendia quadrangularis Robert Schlising 1978-4-18 3221 Butte Ca 2 mi S Tehama County line, at jct Broyles Road and Hwy 99; vernal pool. Comment
  CHSC109642  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte North side of the paved park road, Lower Bidwell Park Chico. 62 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  UC179477  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC9546  Cirsium occidentale var. venustum R. G. Bevers 1968-3-5 30 Butte Locally found 9 mi n of Chico on hwy. 32. On the w side of the rd. 100 ft. s of large turnoff overlooking the valley. Ca. 10 ft from the rd. 304 Comment
  CHSC38338  Cirsium vulgare Vernon Oswald 1982-12-17 22 Butte Bidwell Park, Chico, 400 ft nw of the parking lot at Diversion Dam. 134 Comment
  CAS-BOT-BC438982  Cistanthe monosperma A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CAS-BOT-BC228751  Cistanthe umbellata A. A. Heller 1915-6-11 11966 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC99641  Clarkia arcuata H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N. 451 Comment
  CDA37981  Clarkia arcuata L. Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  UC1071957  Clarkia biloba subsp. brandegeeae H. and M. Lewis 1947-6-11 394 Butte 7.0 mi nw Bangor (on road to Oroville) Comment
  CHSC62767  Clarkia concinna subsp. concinna L. P. Janeway 1993-6-16 4390 Butte Plumas National Forest. Upper east-facing slopes of North Fork Feather River canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap. Road cut-bank. 670 Comment
  UCR187079  Clarkia cylindrica Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 014 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CAS-BOT-BC165940  Clarkia gracilis Lowell Ahart 1975-5-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC164522  Clarkia gracilis subsp. albicaulis Frances Brown 1934-1-1 s.n. Butte Mountains above Chico Comment
  CHSC25259  Clarkia gracilis subsp. albicaulis M. S. Taylor 1977-6-26 1380 Butte In ditch on s side of Ponderosa Way, ca. 1 1/2 mi e of Cohasset. 609 Comment
  CHSC88643  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 361 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  POM37904  Clarkia gracilis subsp. albicaulis R. M. Austin 1883-05 s.n. Butte [No location information on label.] Comment
  CHSC28009  Clarkia mildrediae subsp. lutescens M. S. Taylor 1978-7-21 1804 Butte On both sides of Oroville-Quincy Hwy ca. 9 mi n of Lake Madrone. 914 Comment
  UCD104794  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-6 4429 Butte Western end of Watson Ridge, about 1.8 miles E-NE of Bald Rock Dome. About 0.7 mile NW of Fall River. 1097 Comment
  SEINET4145627  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mountain House, Brush Creek, and Mosquito Creek, 5 year old timber plantation above Road 22N49 0.1 mi north of French Creek Road 975 Comment
  CDA13323  Clarkia mildrediae subsp. mildrediae G. F. Hrusa, T. D. Wilfred 1996-7-9 13169 Butte Sierra Nevada; Approx. 1 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC65576  Clarkia mosquinii L. P. Janeway 1995-7-7 4834 Butte Along Hwy 70 1.3 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 655 Comment
  JEPS104270  Clarkia mosquinii Lowell Ahart 2003-6-30 10327 Butte Near the small stream, on the w side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  CAS-BOT-BC163649  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardsonn Springs Comment
  CAS-BOT-BC163655  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
  CAS-BOT-BC164780  Clarkia rhomboidea John Thomas Howell 1962-6-15 37470 Butte Magalia 731 Comment
  CAS-BOT-BC164791  Clarkia rhomboidea Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC101822  Clarkia rhomboidea Lowell Ahart 2009-5-23 15768 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC59112  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill. Near canyon bottom. 560 Comment
  CHSC70755  Clarkia rhomboidea L. P. Janeway 1994-6-17 4664 Butte Along Pulga Road (Camp Creek Road) 7.5 mi northeast of Pulga Bridge (Hwy 70); northwest side of canyon of North Fork Feather River almost overlooking Arch Rock. 701 Comment
  RSA108409  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 759 Butte Highway 24, 1.4 mile south of Arch Rock, Feather River. Comment
  SEINET3449641  Clarkia rhomboidea Unknown 2003-6-30 10327 Butte Forbestown, Forbestown, about 2 miles air northwest, south side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 490 Comment
  UC1143252  Clarkia rhomboidea H. and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  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
  UC172865  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte 8 mi n Oroville; Table Mountain 182 Comment
  SEINET10572698  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3499 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC33109  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-5 3619 Butte In shaded creek crossing 21N35 and , ca. 0.5 mi s of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC3286  Claytonia perfoliata subsp. perfoliata M. L. Hillier 1966-3-6 Butte 4 blocks w. of railroad tracks on W. 3rd St. in the almond orchard behind Craig Hall. Chico. Comment
  CHSC77711  Claytonia perfoliata subsp. perfoliata Tim Stofer 1997-4-20 18 Butte On the east side of the trail 150 ft from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC56762  Claytonia rubra J. Monelo 1990-4-16 10 Butte Butte Meadows - Humboldt Rd ca 1.9 mi n of Hwy 32 facing rock outcropping ca 100 ft nw of Humboldt Rd. 1341 Comment
  SEINET10830266  Claytonia rubra Mary Susan Taylor 1981-4-27 Taylor 3557 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC45389  Claytonia rubra subsp. rubra Vernon Oswald 1984-5-9 1177 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Loma). 1158 Comment
  CAS-BOT-BC91352  Clematis lasiantha Jim Riley 1923-3-25 s.n. Butte Centerville. Comment
  UCD95626  Clematis lasiantha P. Thompson 1996-4-26 36 Butte Hwy 70. Along steep roadside next to a running creek. Comment
  CHSC40318  Clematis ligusticifolia Lowell Ahart 1985-7-24 5158 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. 350 Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  JEPS108719  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  UC600649  Collinsia torreyi var. wrightii H. F. Copeland 1932-6-27 Butte woods near Butte Creek Meadows (going toward Kirbys Meadow, Jonesville); Jonesville Comment
  CHSC1228  Collomia heterophylla V. Holt 1935-5-21 Butte Butte Creek. 67 Comment
  CHSC33794  Collomia heterophylla M. S. Taylor 1981-4-28 3563 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. 929 Comment
  UC116644  Comandra Mrs. R. M. Austin May 1896 298 Butte Little Chico Creek Comment
  CAS-BOT-BC180255  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  CAS-BOT-BC180249  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Near Magalia Comment
  JEPS124157  Conyza canadensis Lowell Ahart 2015-11-7 20614 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  POM180852  Conyza canadensis H. F. Copeland 1923-1 867 Butte Nelson Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  RSA7124  Coreopsis stillmanii C. B. Wolf 1933-5-19 4823 Butte 10 miles above Raymond on road to Coarse Gold. Comment
  CHSC20128  Cornus florida M. S. Taylor 1975-5-6 557 Butte Ca. 5 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  POM77773  Cornus nuttallii C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  SEINET10453479  Cornus nuttallii Mary Susan Taylor 1981-4-14 Taylor 3531 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CAS-BOT-BC209584  Cornus sericea H. F. Copeland 1920-8-2 197 Butte Jonesville 1219 Comment
  UC600763  Cornus sericea subsp. sericea H. F. Copeland 1931-6-11 Butte by Scotch John Creek in Butte Creek Canyon Jonesville; Butte Creek Canyon, Scotch John Creek Comment
  UC398916  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  UCD40400  Corylus cornuta subsp. californica Rodney Gale Myatt 1971-6-13 722 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC5961  Cotoneaster conspicuus M. MacArthur 1968-6-17 203 Butte SW end Administration bld., N corner, Chico State College campus. 60 Comment
  CHSC78141  Crassula aquatica Lowell Ahart 2000-5-21 8379 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  CHSC108799  Crassula connata Lowell Ahart 2012-4-9 17837 Butte Vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC40608  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, West of Yankee Hill. 550 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 269 Comment
  CHSC38642  Crataegus monogyna Vernon Oswald 1983-4-6 287 Butte Upper Bidwell Park, Chico, on the s edge of Upper Park Rd. 0.3 mi e of the end of the pavement. 94 Comment
  CAS-BOT-BC290745  Crepis occidentalis subsp. occidentalis H. F. Copeland 1931-6-11 1532 Butte Jonesville. Near Butte Creek Meadows 1828 Comment
  CHSC109531  Crepis pleurocarpa L. P. Janeway 2012-6-23 10890 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
  CHSC114164  Croton setiger Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16789 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  RSA718311  Crucianella angustifolia L. Ahart 2006-6-9 12645 Butte On the S side of the service road to Bardees Bar along the N Fork of the Feather River. About 1/8 mile E of Hwy 70. About 2.75 miles (air) SW of Pulga. 436 Comment
  CHSC36551  Crypsis schoenoides L. Ahart 1982-7-10 3672 Butte On the bottom of a duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC190168  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte About 0.1 mile south of the clay burrow for Oakville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC33409  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-28 3933 Butte E. of Jonesville, on road towards Scotts John Creek. 1828 Comment
  SBBG119797  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1524 Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  SEINET10497275  Cryptantha flaccida Lowell Ahart 1985-5-6 Ahart 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC42516  Cryptantha intermedia Lowell Ahart 1987-5-9 5577 Butte Along Pulga Road, about 1/4 mi west of Bardees Bar along the North Fork of the Feather River. about 2 1/2 miles south-west of Pulga. 365 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
  JEPS26228  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  POM304533  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CAS-BOT-BC68067  Cryptogramma acrostichoides Lowell Ahart; Vernon Oswald 1987-8-5 3179 Butte Near Humboldt Peak 2151 Comment
  CAS-BOT-BC85562  Cupressus macnabiana John Thomas Howell 1955-6-14 30444 Butte Magalia 731 Comment
  CAS-BOT-BC224367  Cuscuta Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2-1/2 mi NE of Honcut between Marysville & Oroville 30 Comment
  JEPS121891  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC105271  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 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
  UC196341  Cuscuta indecora A. A. Heller 1914-8-11 11677 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  CHSC78508  Cuscuta pentagona Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC33257  Cycloloma atriplicifolium R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. Comment
  NY43591  Cydonia oblonga S. Bianco 1995-11-10 1060 Butte 8841 Skyway Rd (Private land holding) 640 Comment
  CHSC27981  Cymopterus terebinthinus var. californicus M. S. Taylor 1978-7-18 1708 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC27265  Cynodon dactylon P. Moyer 1972-6-5 215 Butte CSUC Campus. E. of L.S. Bridge. 60 Comment
  CHSC33796  Cynoglossum occidentale M. S. Taylor 1981-5-4 3595 Butte SW of 21N80, s side of spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi sw of Brush Creek. 914 Comment
  CHSC101170  Cynosurus echinatus Lowell Ahart 2009-5-15 15674 Butte 80 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  CHSC45113  Cyperus bipartitus Vernon Oswald 1987-6-15 3001 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  JEPS87444  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river); w side Fall River 1036 Comment
  CAS-BOT-BC114741  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CDA17800  Cyperus difformis G. D. Barbe 1978-9-25 2434 Butte Butte Basin; Biggs Rice Experiment Station. 0 Comment
  CHSC97258  Cyperus difformis Lowell Ahart 2007-8-19 14486 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC109748  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC37388  Cyperus eragrostis R. A. Schlising 1980-8-31 3977 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC45248  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-4 1905 Butte Gravel bar along Butte Cr ca 2 1/2 mi east of The Skyway. 45 Comment
  JEPS124327  Cyperus eragrostis Lowell Ahart 2015-10-20 20568 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS115040  Cyperus erythrorhizos Lowell Ahart 2007-11-3 14555 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC45145  Cyperus flavescens Lowell Ahart 1975-8-21 957 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS95785  Cyperus flavescens Lowell Ahart 1999-8-13 8143 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
  JEPS98697  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET4896966  Cyperus fuscus L. Ahart, V. H. Oswald 1999-8-13 8181 Butte 12 miles SW of Chico. Legal: T20N R1W Comment
  CHSC68396  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-12 1924 Butte Canyon of North Fork Feather River near Heinz Creek; at a small side creek and seeps along Hwy 70 about 2 mi east of the Pulga turnoff. 441 Comment
  CAS-BOT-BC113851  Cyperus niger var. capitatus Lowell Ahart 1979-9-8 s.n. Butte Ca. 6 mi. N of Oroville. 200 Comment
  SEINET10467153  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 Ahart 4432 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  SEINET10467155  Cyperus niger var. capitatus Mary Susan Taylor 1977-8-16 Taylor 1447 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CAS-BOT-BC114073  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte South of Oregon Gulch Road, ca. 1/2 mi N of the Cementery, 335 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  JEPS124326  Cyperus strigosus Lowell Ahart 2015-10-20 20569 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC114207  Cyperus strigosus Lowell Ahart 1981-9-19 3185 Butte Arch Rock Tunnel, Hwy 70. 550 Comment
  CHSC101752  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC110336  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. 632 Comment
  UC142471  Damasonium californicum Mrs. R. M. Austin May 1896 20 Butte Sacramento R. Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  UC726245  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte grassy slopes on Feather River Hwy 2 1/2 mi e Oroville Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  CHSC44423  Delphinium hansenii subsp. hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  CHSC84274  Delphinium hansenii subsp. hansenii Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10225 Butte On the east side of the dirt road, at Parking Area P, Upper Bidwell Park, about 5 miles east of Manzanita Avenue, Chico. 228 Comment
  HSC32401  Delphinium hesperium Gary S. Lester 1974-4-20 103 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CHSC101032  Delphinium hesperium subsp. pallescens John Dittes; Josephine Guardino 2007-4-22 1445 Butte Great Central Valley; Northern Sacramento Valley; ca. 6.1 air miles northwest of Chico (municipal airport tower), ca. 1.1 air miles southeast of intersection of State Hwy 99 and Broyles Road, ca. 0.8 air mile northwest of intersection of State Hwy 99 and Cana Hwy; east side of Hwy 99. 60 Comment
  CHSC56875  Delphinium nudicaule Mark Bradford 1983-4-1 10 Butte Summit of Table Mountain, ca. 4 mi. n of Oroville, ca. 2 mi. sw of Cherokee, 1 mi. n of Table Mountain Road. 91 Comment
  CAS-BOT-BC8068  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  UC600481  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte near north Willow Creek; Jonesville 1524 Comment
  CHSC23692  Delphinium patens M. S. Taylor 1976-5-5 1116 Butte Ca. 50 ft s of Hwy 70 along dirt road, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  CHSC48689  Delphinium patens subsp. patens Vernon Oswald 1985-5-2 1745 Butte Concow Rd. 1.1 mi sw of its jct. with Ponderosa Way. 853 Comment
  CAS-BOT-BC121625  Delphinium patens subsp. patens Lowell Ahart 1990-3-28 6429 Butte South side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 39 Comment
  UC765797  Delphinium recurvatum R. F. Hoover 1937-5-18 2231 Butte 2 mi s Nelson Comment
  CAS-BOT-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  CHSC100790  Delphinium variegatum J. D. Jokerst; R. A. Schlising 1981-4-16 1300 Butte 0.9 mi E of Bangor Road on Swedes Flat Road. Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  UCD96741  Delphinium variegatum J. P. Smith; J. O. Sawyer 1973-4-14 6058 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico. Comment
  CHSC65649  Dendromecon rigida Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi s of trailhead in Paradise. 548 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
  JEPS117703  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CHSC112523  Deschampsia elongata B. Castro 2012-10-18 1990 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC33956  Deschampsia elongata M. S. Taylor; L. Ahart 1981-8-15 4184 Butte Along West Branch Feather River, 3.4 mi sw of Snag Lake, ca. 11 mi ne of Stirling City. 1615 Comment
  CHSC39497  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  UCD63483  Deschampsia elongata L. E. Hazeltine 1916-6-10 Butte Chico. Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CHSC54003  Descurainia sophia Vernon H. Oswald 1991-4-8 4487 Butte Hwy 99, 0.3 mi south of Meridian Rd, north of Chico. On the east side of the road. 54 Comment
  CHSC101748  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC86952  Dianthus armeria subsp. armeria L. P. Janeway; B. Castro 2001-6-17 7184 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy. 1000 Comment
  CHSC76942  Dicentra formosa Margie Collins 1894-5-1 Butte Chico. Comment
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  UC1362274  Dicentra formosa James Guthrie 1964-4-28 Butte ca 1.5 mi n Magalia (on Skyway) Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  UC569468  Dicentra formosa P. L. Johannsen 1936-7-17 931 Butte 0.5 mi s Butte Meadows; Paynes Creek Quad. 1341 Comment
  SEINET10904729  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4710 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  UC1362263  Dicentra formosa Kingsley R. Stern 1965-4-25 2169 Butte ca 2.9 mi e (upstream) Poe Power Dam (bank of small creek flowing into n fork of Feather River); Feather River Comment
  UC1362276  Dicentra formosa K. R. Stern Oct 1963 2068 Butte ca 12 mi e Chico (ca 2 mi s of Highway 32 at 15 mile house, along banks of creek) Comment
  CAS-BOT-BC402383  Dicentra formosa subsp. formosa A. A. Heller 1915-6-11 11965 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC44307  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC70889  Dicentra uniflora Vernon Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi northeast of Hwy. 32. Slope looking down into Big Chico Creek Canyon. 1381 Comment
  JEPS113335  Dichelostemma capitatum subsp. capitatum L. P. Janeway and B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  JEPS114183  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2007-5-6 8967 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  RSA333574  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 23 Butte Along Cherokee Road, 0.5 mile N of intersection with Oregon Gulch Road, near South Table Mountain, N of Oroville. 450 Comment
  CHSC44519  Dichelostemma congestum Lowell Ahart 1988-5-1 5979 Butte On damp red soil, on the west side of the Poe Power House Road, about 1/2 mile north of the Poe Power House, about 2 miles southeast of Jarbo Gap, Butte County, California. 396 Comment
  SEINET10533898  Dichelostemma congestum R. M. Austin Austin 37 Butte Mesa-east of Chico. Comment
  JEPS48317  Dichelostemma multiflorum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2690 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  SD111968  Dichelostemma multiflorum Barbara Ertter, Lowell Ahart, Jeffrey Strachan 1980-5-6 3271 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville. Dried vernal pool previously plowed as grainfield, now reverted, very rocky. 29 Comment
  CHSC36293  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  CHSC116147  Digitaria sanguinalis Lowell Ahart 2015-10-26 20610 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC41980  Digitaria sanguinalis Lowell Ahart 1986-11-14 5464 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
  RSA703067  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte in a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  SEINET10560034  Digitaria sanguinalis Lowell Ahart 1982-8-22 Ahart 3745 Butte On damp sandy soil along edge of North Honcut Creek, Peter Ahart Ranch, 3 mi ne of Honcut. Foothill Woodland. 50 Comment
  CAS-BOT-BC150507  Diplacus grandiflorus Lewis S. Rose 1933-5-26 33186 Butte Feather River Canyon, 5 mi. E. of Oroville 152 Comment
  CAS-BOT-BC150509  Diplacus grandiflorus F. W. Pennell; A. A. Heller 1940-6-5 25677 Butte Route 24, along Feather River, above Oroville 243 Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  CHSC94933  Diplacus grandiflorus K. Lang 2005-5-5 42 Butte Lime Saddle Boat Launch, near Oroville. 279 Comment
  CHSC1774  Diplacus kelloggii H. Summers 1929-4-21 Butte Butte Creek. Comment
  CHSC33721  Diplacus kelloggii M. S. Taylor 1981-4-5 3485 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CAS-BOT-BC153221  Diplacus kelloggii Jean L. Pawek 1956-5-21 53 Butte Alt. 40, Feather River 609 Comment
  SEINET8399955  Diplacus kelloggii K. L. Chambers 1987-4-29 5348 Butte Hwy. 70, along the Feather River above Lake Oroville, at highway bridge crossing the river at Pulga; on roadside flat. Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC153335  Diplacus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills 487 Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC38709  Diplacus tricolor Vernon Oswald 1983-4-20 357 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.) 85 Comment
  CAS-BOT-BC154167  Diplacus tricolor Lowell Ahart 1988-4-29 5969 Butte On the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville 76 Comment
  CHSC35076  Dipsacus fullonum N. Prouty; J. Prouty, R. A. Schlising 1981-10-4 4218 Butte 0.7 mi S of Nelson, between highway and Southern Pacific Railroad tracks. Comment
  JEPS98609  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC110042  Dittrichia graveolens Lowell Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. 30 Comment
  JEPS115102  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 60 Comment
  SEINET11991666  Dodecatheon clevelandii E. J. Baker 1984-1 1 Butte N side of Humboldt Rd.ca.10 yds N of Rd,.2 mi E of intersection with Stinson Canyon Rd and Bruce Rd 58 Comment
  CHSC38635  Dodecatheon clevelandii subsp. patulum Vernon Oswald 1983-2-2 57 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of the parking lot at Bare Hole. 115 Comment
  POM287081  Dodecatheon clevelandii subsp. patulum Lyman Benson 1935-3-27 6358 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  CHSC13892  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Approx. 4 mi se on Cherokee Road from its intersection with Hwy 70, w side of road near oaks in a cow pasture. Comment
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  HSC32573  Downingia bella David Johnson 1974-4-20 26 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  SEINET12329564  Downingia bella Unknown 1984-1 4587 Butte T17N, R4E. Peter Ahart Ranch, ca 1.5 mi N and 0.5 mi E of Honcut, ca 12 mi S of Oroville. Valley 50 Comment
  CHSC70790  Downingia bicornuta var. bicornuta B. Castro 1995-6-6 574 Butte Ca 4 air mi SE of Chico, W of Hwy 99, on E side of the Oro-Chico Hwy ca 0.3 mi N of its jcn with Neal Road. 53 Comment
  SEINET3450898  Downingia cuspidata Unknown 2003-5-28 10227 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  UC625530  Downingia cuspidata Frank W. Gould 1938-4-23 318 Butte a few mi n Gridley Comment
  UC1564749  Downingia elegans V. Oswald and L. Ahart 1989-8-15 3943 Butte 1.2 mi (air) w Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, just ne of lake visible from road) 1752 Comment
  JEPS103648  Downingia montana Lisa Schultheis 1995-7-15 250 -95 Butte Butte Meadows. N side of Humboldt Road, off of Rt. 32, just W of entrance to Boy Scout Camp Lassen. 0.3 mile E of Butte Meadows National Forest Campground Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS119712  Downingia ornatissima var. ornatissima Lowell Ahart 2012-5-2 17965 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC46481  Draba verna var. aestivalis Lowell Ahart 1975-3-4 702 Butte Along the west side of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC38457  Draperia systyla Vernon Oswald 1983-6-7 638 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 600 ft e of the footbridge at the golf course. 91 Comment
  RSA129731  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 1/2 mile south of Barnum Mill. Chico Quadrangle. 1372 Comment
  SEINET10448016  Drosera rotundifolia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4756 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC159641  Drymocallis glandulosa var. glandulosa Lowell Ahart 1985-5-15 774 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  UC600382  Drymocallis lactea var. austiniae H. F. Copeland 1932-7-16 Butte n summit (Jonesville); Jonesville Comment
  CHSC28512  Dryopteris arguta M. S. Taylor; J. D. Jokerst 1979-10-13 2267 Butte On Jordan Hill Rd (Ponderosa Way on some maps) ca. 7.1 mi n of its jct with Concow Rd, ca. 2 mi se of Magalia. Comment
  CHSC50014  Dryopteris arguta Lowell Ahart 1990-3-19 6417 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC99551  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  SEINET10530138  Dryopteris arguta Mary Susan Taylor 1981-5-7 Taylor 3638 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC3524  Dudleya cymosa John Francis 1966-4-23 129 Butte Table Mt. Comment
  CHSC66436  Dysphania botrys V. H. Oswald; Lowell Ahart 1996-6-10 7739 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Scattered plants on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 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
  JEPS124156  Dysphania botrys Lowell Ahart 2015-11-7 20617 -A 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
  JEPS120583  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC110400  Echinochloa colona Lowell Ahart 2012-9-28 18460 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC31239  Echinochloa colona M. S. Taylor; J. D. Jokerst 1979-10-11 2284 Butte In ricefield, ca. 6 mi s of Chico, on w side of Goodspeed-Watt Rd (Aquas Frias Rd). 33 Comment
  CAS-BOT-BC197101  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 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
  CAS-BOT-BC197251  Echinochloa muricata Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD61094  Echinochloa muricata P. B. Kennedy 1921-8-9 Butte Rice Station, Biggs. Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  UCD61163  Echinochloa oryzicola B. Voorhees 1997-8-21 Butte Davit Dayton Ranch, south of Chico. Comment
  HSC95564  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the E side of the Sacramento River, NW of Parrot Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 air mi. SW of Chico 32 Comment
  CHSC114972  Elatine Lowell Ahart 2015-3-31 19985 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, aobut 3-1/2 miles (air) southwest of Gridley. 22 Comment
  JEPS104282  Elatine ambigua Lowell Ahart 2003-6-23 10299 Butte On the bottom of a wash, Peter Ahart Ranch, ca 100 yd e of Palermo Honcut Highway, ca 2 1/4 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC46263  Elatine californica Vernon Oswald 1989-5-17 3776 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  CHSC45275  Elatine heterandra Vernon Oswald 1988-4-26 3282 Butte Gray Lodge Waterfowl Management Area, on the n side of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CHSC45273  Elatine rubella Vernon H. Oswald 1988-12-13 3724 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC78734  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8691 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD49581  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC31664  Eleocharis bella L. Ahart 1980-9-8 2594 Butte Bottom of a small wash in one of the pasture fields, ca. 1.5 mi n and 1.5 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31926  Eleocharis bella J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 842 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with Skyway, community of Butte Meadows. 1341 Comment
  CAS-BOT-BC113565  Eleocharis bolanderi L. P. Janeway 1988-6-19 2822 Butte Small open seepy area along Honey Run Road 0.9 mi SW of Skyway. 411 Comment
  CHSC31666  Eleocharis macrostachya L. Ahart 1972-6-20 114 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC68430  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1916 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  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
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. Comment
  JEPS124274  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS98357  Eleocharis parishii Lowell Ahart 2000-6-21 8497 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS98472  Eleocharis quinqueflora Lowell Ahart 2000-5-30 8411 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  HSC97772  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte N margin of large wash 200 yds. E of road crossing, Peter Ahart Ranch, 1.5 mi. N and 1.25 mi. E of Honcut, 12 mi. SE of Oroville 37 Comment
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC80887  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC107432  Elymus caput-medusae L. P. Janeway 2011-6-29 10404 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC43132  Elymus elymoides subsp. elymoides Robert Banchero 1981-7-18 605 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. Roadside. 1749 Comment
  CHSC28861  Elymus elymoides var. californicus J. D. Jokerst 1979-5-18 464 Butte Top of North Table Mt, ca 400 met N of the jct of E edge of Mt and Cherokee Rd. Comment
  CHSC46231  Elymus glaucus Pauleen Broyles 1987-6-26 1070 Butte Ca 1.5 air miles n.e. of Inskip. On Fish Creek, ca 90 m. above road-crossing bridge. 1425 Comment
  UCD62438  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  CAS-BOT-BC410229  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  SEINET10453214  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1975-10-4 Taylor 954 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
  SEINET10453189  Epilobium adenocaulon var. occidentale Mary Susan Taylor 1978-7-19 Taylor 1745 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  UC204379  Epilobium brachycarpum A. A. Heller 1914-7-23 11602 Butte edge of the forest about Chico Meadows 1219 Comment
  SEINET10453197  Epilobium brevistylum Lowell Ahart 1983-8-16 Ahart 4296 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC166845  Epilobium canum subsp. latifolium Lowell Ahart 1980-9-10 2627 Butte 1 mile north-east of Milsap Bar 900 Comment
  POM305569  Epilobium canum subsp. latifolium Henry J. Ramsey 1939-10-15 851 Butte Feather River Hwy. Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC116143  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2015-10-26 20600 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile d(air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 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
  OBI5728  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville 1500 Comment
  CHSC46144  Epilobium cleistogamum Lowell Ahart 1978-5-15 1728 Butte On the bottom of a vernal pool, in a pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC28746  Epilobium densiflorum R. A. Schlising 1979-9-6 3487 Butte Above Butte Meadows, along Humboldt Road, 1.5 mi S of Lassen Nat. Forest boundary and 1.1 mi N of road to Stirling City. In ditches at roadside. Comment
  CHSC46146  Epilobium densiflorum Lowell Ahart 1977-9-20 1577 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC165939  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end; Along dirt road 21N25A 1079 Comment
  UC1594693  Epilobium hallianum Lowell Ahart 1992-7-21 6803 Butte on sides of a snow lake on s side of Hollow Coon Hollow (about 2 air mi ne of Philbrook Reservoir) 1737 Comment
  UCD106506  Epilobium minutum Lewis S. Rose 1963-6-2 63071 Butte 2 miles S of Pulga. North fork of Feather River. 579 Comment
  LA206153  Epilobium obcordatum E. B. Copeland; 1931-7-13 sn Butte Jonesville, at The Summit 609 Comment
  CHSC109598  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC28716  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  CHSC35109  Epilobium torreyi R. Schlising 1980-6-17 3737 Butte N of Magalia and De Sabla, along Skyway, 1.2 mi NE of jct with Coutelenc Road at Lovelock. Roadside. 899 Comment
  UC725503  Epilobium torreyi A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  UCD18875  Epilobium torreyi Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 183 Butte Off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  SEINET12073781  Epipactis gigantea Unknown 1966-1 459 Butte ca 15 mi NE of Oroville at old Berry Creek railroad station on North Fork Feather River 457 Comment
  CHSC27916  Equisetum hyemale subsp. affine M. S. Taylor 1978-7-19 1731 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC39630  Equisetum laevigatum Lowell Ahart 1983-4-22 3937 Butte Peter Ahart Ranch, Honcut. On the banks of North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC42507  Equisetum laevigatum Lowell Ahart 1987-5-27 5713 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC54334  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte West of Springtown Road, near Lake Oroville. 304 Comment
  CHSC49240  Eragrostis hypnoides Vernon Oswald 1984-6-3 1252 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. On the edge of the river. 39 Comment
  SEINET13711407  Eragrostis mexicana Lowell William Ahart, Lowell William Ahart 1999-1 8306 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Bank of Sacramento River Comment
  CHSC69738  Eragrostis mexicana subsp. virescens Lowell Ahart 1997-10-24 7939 Butte About 20 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 west of the Ponderosa Dam. 274 Comment
  RSA703222  Eragrostis pectinacea L. Ahart 2004-9-14 11402 Butte irrigated on the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 58 Comment
  CHSC96892  Eragrostis pectinacea var. pectinacea Lowell Ahart 2007-6-12 14083 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  SEINET10453735  Eremocarpus setiger Mary Susan Taylor 1975-10-3 Taylor 947 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
  CAS-BOT-BC181702  Eremogone kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte About 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City 1767 Comment
  CHSC41876  Erigeron bonariensis Lowell Ahart 1986-11-14 5461 Butte 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
  CHSC37074  Erigeron canadensis L. Ahart 1982-10-6 3848 Butte North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  CHSC41874  Erigeron canadensis Lowell Ahart 1986-11-9 5438 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
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC48148  Erigeron inornatus var. calidipetris Vernon Oswald 1987-7-29 3161 Butte Coon Hollow Rd. 0.2 mi e of the W. Branch of the Feather River, ca. 2.5 mi (air) n of Philbrook Reservoir. At the edge of the road. 1645 Comment
  CAS-BOT-BC295467  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CHSC6755  Erigeron philadelphicus Marilyn Lee 1968-4-19 114 Butte On E. side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Table Mt. Comment
  CHSC99637  Eriodictyon californicum H. Koeth; K. Schierenbeck 2007-2-13 Butte Crown Point Rd., Forest Ranch. UTM 10 611669E 4411016N. 586 Comment
  CAS-BOT-BC259400  Eriogonum luteolum Ira L. Wiggins 1928-9-9 3346 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CAS-BOT-BC259405  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  CHSC23446  Eriogonum luteolum var. luteolum K. R. Stern 1974-6-30 5769 Butte Serpentine outcrop, Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  LA206880  Eriogonum marifolium var. apertum E. B. Copeland; 1930-7-12 410 Butte above Jonesville 2100.0 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  CHSC59563  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  RSA718043  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. Common in area. 610 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  CAS-BOT-BC262207  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville 2050 Comment
  CAS-BOT-BC262210  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  CHSC30844  Eriogonum ursinum var. ursinum M. S. Taylor; R. Schlising 1980-7-6 3075 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CDA22694  Eriogonum vimineum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  CHSC28533  Eriogonum wrightii var. trachygonum M. S. Taylor 1979-11-15 2286 Butte In rocky tailings, North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC308148  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile southeast of Lumpkin Ridge Road about 1 1/2 miles east of Camp 18 about 8 miles north-east of Feather Falls 1280 Comment
  CHSC22941  Eriophyllum lanatum var. grandiflorum Robert A. Schlising 1963-6-7 2614 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  RSA727541  Eriophyllum lanatum var. grandiflorum 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
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  CAS-BOT-BC301465  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  RSA0035334  Erodium brachycarpum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC670  Erodium moschatum C. Merton 1929-5-20 Butte Chico. 57 Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  CHSC87424  Erythranthe glaucescens R. D. Fischer 2004-3-20 114 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along drainage on Guardian Trail. UTM: 10609595E 4405947N. 384 Comment
  CAS-BOT-BC153853  Erythranthe glaucescens Jed McClellan; Bonnie McClellan 1976-4-16 s.n. Butte Honey Run Road Comment
  SEINET13754621 Image available Erythranthe glaucescens Lewis S. Rose 1967-1 67077 Butte 1 mi S of Pulga, North Fork Feather River 427 Comment
  CHSC44819  Erythranthe guttata R. Banchero 1980-5-23 163 Butte Along Surcease Mine Rd 0.2 mi S of its jct with Bunker Mine Rd. 694 Comment
  CHSC90162  Erythranthe guttata Evelyn Jo Baker 1984-3-28 4 Butte E side of Hwy 70, 1 mi se of intersection with Hwy 149, 6 mi nw of Oroville. 57 Comment
  CAS-BOT-BC151462  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  SEINET8354987  Erythranthe moniliformis A. A. Heller 1914-6-22 11511 Butte Chico meadows. 1219 Comment
  SD50989  Erythranthe moschata Darley F. Howe 1960-9-20 Butte North Fork of the feather River, 32 miles from Oroville, by stream 518 Comment
  CHSC113476  Erythranthe primuloides Lowell Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC11895  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  SEINET10938442  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 A Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CAS-BOT-BC402645  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CAS-BOT-BC402637  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  CAS-BOT-BC402640  Eschscholzia caespitosa A. A. Heller 1938-4-23 15052 Butte Just west of the summit between the West Branch and the North Fork of the Feather River on Highway #24 Comment
  CAS-BOT-BC402968  Eschscholzia californica A. A. Heller 1914-4-3 s.n. Butte Hills 8 miles north of Oroville Comment
  JEPS119618  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte About 5 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC52448  Eschscholzia lobbii Germaine Belanger 1984-4-3 12 Butte 6 mi S of Oregon Gulch and Cherokee Rd jct. 396 Comment
  JEPS117219  Eschscholzia lobbii Lowell Ahart 2010-5-16 16702 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CAS-BOT-BC312030  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte Summit above Jonesville Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  SEINET10453783  Euphorbia serpillifolia var. hirtula Mary Susan Taylor 1978-7-18 Taylor 1704 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC9139  Euphorbia spathulata M. P. Coffeen 1970-4-14 16 Butte 100 yds. S. of Horseshoe Lake in Bidwell Park, Chico. 91 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
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CAS-BOT-BC312196  Eurybia radulina Mary E. Wall 1940-7-18 s.n. Butte Pardise Comment
  CHSC102534  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC96063  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  SEINET10508573  Festuca californica Lowell Ahart 1985-5-15 Ahart 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10560618  Festuca elmeri Elihu Hall 1863-1 Hall s.n. Butte Bolander. Comment
  SEINET10560623  Festuca elmeri A. Arthur Heller 1902-5-16 Heller 5562 Butte Marysville Buttes (rocky slope of East Butte) Comment
  CDA13878  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-7 13736 Butte Sierra Nevada; Bottom of Little Butte Creek canyon above Magalia Reservioir, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10507962  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  CAS-BOT-BC278629  Festuca subulata Lowell Ahart 1981-9-15 3159 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CHSC44923  Festuca subulata Lowell Ahart 1988-7-31 6148 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
  CHSC45132  Fimbristylis autumnalis Vernon Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CHSC50552  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4343 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC66658  Foeniculum vulgare Vernon H. Oswald; Lowell Ahart 1996-7-22 8076 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wldlife parcel between 7 Mile Lane and the Sacramento River. Growing along the edge of a levee road along the N side of Tract 6, Sanctuary I. 33 Comment
  CHSC23538  Fragaria vesca M. S. Taylor 1976-2-16 1026 Butte On bank on s side of Butte Creek, ca. 500 yds w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  UCD113236  Fragaria vesca L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SD2199  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville, in low woods 1550 Comment
  SEINET7417535 Image available Frangula californica subsp. californica A. A. Heller 1915-1 11882 Butte canyon of Chico Creek 5 mi E of Chico Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC47050  Frangula purshiana R. A. Schlising; P. Broyles 1987-6-26 4520 Butte 1.2 mi s of Inskip, along Skyway. 1417 Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] Comment
  CAS-BOT-BC223385  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico Comment
  CHSC52182  Fraxinus dipetala L. P. Janeway 1989-5-19 3266 Butte Serpentine outcrop and open area near upper SE branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  CHSC109662  Fraxinus profunda Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area. Lower Bidwell Park, Chico. 71 Comment
  CHSC40667  Fremontodendron californicum J. D. Jokerst; L. Ahart 1984-3-20 1950 Butte Edge of Ponderosa Rd. (=Bloomer Rd.) 1.45 miles north of its junction with Highway 162. 3 air miles SW of Berry Creek. Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  CHSC86423  Fritillaria affinis R. D. Fischer; Paul Maslin 2004-2-7 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609847E 4408885N. 381 Comment
  CAS-BOT-BC130315  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Along Milsap Bar Road, Plumas National Forest Comment
  CHSC32632  Fritillaria eastwoodiae M. S. Taylor 1981-4-2 3475 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (downhill) of Magalia. 548 Comment
  CAS-BOT-BC124016  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte near Durham Comment
  CAS-BOT-BC130429  Fritillaria pluriflora H. E. Brown 1897-4-15 141 Butte Near Clear Creek 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
  UC726736  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte near Stirling Comment
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  CAS-BOT-BC508153  Fritillaria recurva Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CDA30237  Fumaria officinalis ELena Alfieri 2008-5-19 Butte Sacramento Valley; Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  UCD121612  Galium bolanderi Harriet Sindel 1970-5-10 8 Butte Cohasset Highway 11.5 miles northeast of intersection with Keefer Lane, Cohasset. 609 Comment
  SD4923  Galium grayanum subsp. grayanum E. B. Copeland 1930-7-25 474 Butte Jonesville, in crevices, dry rocky ridge 1700 Comment
  CHSC51913  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3076 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Cr House. 1935 Comment
  CHSC111972  Galium parisiense Lowell Ahart 2012-6-2 18144 Butte South edge of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  CHSC32670  Galium porrigens var. tenue M. S. Taylor; D. Hemphill 1981-3-18 3426 Butte S of bridge crossing West Branch Feather River, ca. 50 ft W of the river, ca. 1 mi NE of Magalia. 487 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC26740  Galium trifidum var. pacificum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1462 Butte Ca. 50 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1828 Comment
  JEPS118052  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC46460  Galium trifidum var. pusillum V. Oswald; L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  JEPS119565  Garrya fremontii Lowell Ahart 2012-2-22 17755 Butte On the south side of Guardian Trail, about 20 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  JEPS116001  Gastridium ventricosum Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  SBBG128461  Gaultheria ovatifolia L. Ahart 2011-8-23 17653 Butte Pinkard Crk flows through the meadow, 40 yards N of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  CHSC108757  Gaura L. P. Janeway; B. Castro 2011-6-5 10361 Butte Sacramento Valley. No sections here (Arroyo Chico) Chico; northeast side of Hwy 99 just southeast of Cohasset Road overcrossing. Generally planted areas bordering the roadway. 62 Comment
  CHSC62475  Gayophytum heterozygum L. P. Janeway 1993-7-31 4486 Butte Plumas National Forest, La Porte Ranger District. Along Cascade Road 0.6 mi north of Fall River crossing; between Mineral Springs Ravine and Dark Canyon. West-southwest facing road cutbank. 1066 Comment
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 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
  CHSC12613  Genista monspessulana S. Posner 1972-9-24 Butte Rocky n bank, Butte Creek. Ca. 300 yds s of Humbug Rd., ca. 3 mi e of Skyway. 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
  CHSC63817  Gentianopsis simplex S. C. Morey 1983-7-23 593 Butte Cherry Hil Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC50046  Geranium carolinianum Lowell Ahart 1990-4-8 6433 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  SEINET10495123  Geranium dissectum Mary Susan Taylor 1982-4-28 Taylor 4353 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
  CHSC3974  Geranium molle L. R. Alexander 1967-4-11 10 Butte Found at intersection of Honey Run Rd. and Humbug Road near covered bridge. 91 Comment
  CHSC99003  Geranium purpureum Lowell Ahart; Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC93795  Gilia capitata subsp. mediomontana Lowell Ahart 2006-5-19 12637 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC1243  Gilia capitata subsp. pedemontana J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 91 Comment
  RSA699525  Gilia capitata subsp. pedemontana R. D. Fischer 2004-4-20 0126 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Patch located approx. midway along Humboldt Trail 427 Comment
  RSA713003  Gilia capitata subsp. pedemontana L. Ahart 2006-5-8 12607 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
  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
  POM74092  Gilia tricolor C. C. Bruce 1897-04 1925 Butte [No locality information provided] Comment
  RSA755355  Gilia tricolor subsp. tricolor L. P. Janeway 2008-4-2 9245 Butte Cascade Range Foothills. East edge of City of Chico, slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 178 Comment
  CHSC37257  Githopsis diffusa subsp. robusta L. Ahart 1982-6-15 3574 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC266593  Githopsis pulchella Clarence R. Quick 1952-6-25 52 -64 Butte 21.5 miles from Chico on Deer Creek Road Comment
  SEINET10464754  Githopsis specularioides Lowell Ahart 1985-5-15 Ahart 4967 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. 503 Comment
  RSA518694  Glinus lotoides L. Ahart 1990-10-5 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile southwest of the Enterprise Boat Launch Area, about 3/4 miles northwest of the Enterprise Bridge across Lake Oroville. 229 Comment
  SEINET10537439  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 229 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  SEINET10473776  Gnaphalium chilense Mary Susan Taylor 1975-4-25 Taylor 503 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CAS-BOT-BC302466  Gnaphalium palustre Mrs. C. C. Bruce 1897-6-1 2110 Butte Little Chico Comment
  CHSC75353  Gnaphalium palustre Lowell Ahart 1999-6-12 8086 Butte High water line on the south side of the reservoir, 50 yards east of the dam, north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 297 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  SEINET10971220  Gnaphalium palustre Mary Susan Taylor 1980-6-29 Taylor 2990 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
  SEINET10475272  Gnaphalium thermale Mary Susan Taylor 1979-10-5 Taylor 2233 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 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
  JEPS32707  Gratiola ebracteata Lewis S. Rose 1963-6-5 63142 Butte 3 mi w Palermo 45 Comment
  HSC32651  Gratiola ebracteata Gary S. Lester 1974-4-20 96 Butte Skyway Blvd., 1 mi. E of US 99 61 Comment
  SEINET10473780  Grindelia camporum Mary Susan Taylor 1975-6-30 Taylor 811 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 Comment
  SEINET10872144  Grindelia camporum Mary Susan Taylor 1979-10-13 Taylor 2262 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  UC1586558  Guillenia lasiophylla Lowell Ahart 1991-5-8 6650 Butte about 1.5 mi n and 2.25 mi e Honcut (about 12 mi se of Oroville, Peter Ahart Ranch) 60 Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10487247  Hedysarum boreale Mary Susan Taylor 1981-5-22 Taylor 3799 Butte Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, about 5 air mi E of Magalia. 1006 Comment
  CHSC20681  Helianthus bolanderi M. S. Taylor 1975-6-30 809 Butte In ditches on e side of Cohasset Hwy, ca. 2 mi n of Chico. 91 Comment
  UC134875  Helianthus bolanderi H. E. Brown Nov 15 1896-Nov 30 1896 126 Butte near Clear Creek 53 Comment
  CHSC34786  Heliotropium europaeum L. Ahart 1981-9-26 3199 Butte On a gravel bar along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  JEPS95933  Heliotropium europaeum Lowell Ahart 1999-8-13 8163 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET10497322  Heliotropium europaeum Mary Susan Taylor 1979-10-2 Taylor 2212 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  SEINET10870095  Heliotropium europaeum Lowell Ahart 1983-9-17 Ahart 4426 Butte T22N R4E se section 31. East end of Kunkle Reservoir Dam, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  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
  CHSC30761  Hemizonia congesta subsp. luzulifolia M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  UC186060  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte near Chico Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  UC478493  Heracleum lanatum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  CHSC34695  Hesperevax acaulis var. robustior M. S. Taylor 1980-5-15 2634 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  HSC86837  Hesperocyparis macnabiana G. C. Russell 1975-5-3 1 Butte 0.6 km NNE of Magalia, 20 m E of road 630 Comment
  RSA0111936  Hesperocyparis macnabiana Lowell A. Ahart 2015-4-30 20117 Butte About 0.25 mile south of Forbestown Reservoir Road, about 2.5 miles (air) northeast of Forbestown. 890 Comment
  CAS-BOT-BC175996  Hesperolinon californicum Lowell Ahart 1980-5-12 2261 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC40373  Hesperolinon micranthum Lowell Ahart 1985-6-30 5085 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC203614  Hesperolinon micranthum A. A. Heller 1914-7-22 11587 Butte Little Summit 1463 Comment
  CHSC19721  Heteranthera limosa Lowell Ahart 1974-8-29 1618 Butte Found in a rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CDA17304  Heteranthera rotundifolia G. F. Hrusa, P. Kerr, S. Winterton 2004-6-25 16353 Butte Central Valley; Rice field edge along Hwy 162 E of Butte City. 15 Comment
  CHSC51862  Heterocodon rariflorum L. P. Janeway 1988-6-25 2899 Butte Small meadow along Bull Hill Rd 2.9 mi from the Skyway. 1508 Comment
  CAS-BOT-BC143630  Heteromeles arbutifolia Lowell Ahart 1986-10-16 5401 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC143635  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 899 Comment
  SEINET7085239  Heteromeles arbutifolia Steven R. Hill 2010-7-17 38550 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  CHSC34051  Heterotheca oregona var. compacta L. Ahart 1981-7-18 2940 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along dirt road near the base of the levee. 35 Comment
  CHSC42860  Heuchera micrantha var. erubescens Lowell Ahart 1987-5-9 5596 Butte Along Pulga Road, about 1/2 mile sout-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  RSA0062978  Heuchera micrantha var. erubescens James R. Shevock 1972-5-19 1785 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CHSC66434  Hirschfeldia incana Vernon H. Oswald; Lowell Ahart 1996-6-10 7735 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CHSC46274  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1989-5-1 3755 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Between the dike road and Butte Creek, ca. 1.3 mi n of Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC536586  Horkelia californica var. elata Forest Sheehan 1975-7-7 s.n. Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  UCD113567  Horkelia tridentata var. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  CHSC25265  Hosackia oblongifolia M. S. Taylor 1977-6-27 1395 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 60 Comment
  CHSC52440  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-7-5 2453 Butte Mdw at end of new logging spur rd, just W of the Concow Rd; ca 1.3 air mi SW of Jones Mdw. 1798 Comment
  CHSC39335  Hosackia pinnata Lowell Ahart 1983-6-26 4139 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC8748  Hydrocotyle verticillata S. Chulasmai 1966-5-20 40 Butte Upper Bidwell Park roadside [Helocsirge spring]. Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC102846  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SFV2319  Hypericum anagalloides M. L. Vincent 1960-7-18 105 Butte Sierra Nevada Old Stage Road near Stearns Road, 3 miles south of Paradise. 530 Comment
  UC176927  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mt. Olive Ranch n. of Oroville; Table Mt. Olive Ranch Comment
  CHSC96820  Hypericum concinnum Lowell Ahart 2007-5-29 13925 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  SEINET10472176  Hypericum concinnum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4059 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
  JEPS110536  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  CHSC42930  Hypericum perforatum Lowell Ahart 1987-7-17 5823 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
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  CAS-BOT-BC312931  Hypochaeris glabra Lowell Ahart 1980-5-4 2208 Butte Near Hurleton 600 Comment
  CAS-BOT-BC133550  Iris hartwegii John Thomas Howell 1962-6-16 37557 Butte Magalia 731 Comment
  SEINET10469747  Iris hartwegii Mary Susan Taylor 1980-5-27 Taylor 2646 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  JEPS88861  Iris hartwegii subsp. hartwegii Carol A. Wilson 1992-5-18 92 -ph24 Butte 21 mi w Beldon (along Hwy 70, in Feather River Canyon); Feather River Canyon 426 Comment
  CHSC90653  Iris macrosiphon Doug Burcombe 1988-4-20 16 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  CHSC87550  Iris pseudacorus R. D. Fischer 2004-3-29 73 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  CAS-BOT-BC69947  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  RSA261555  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles NE of Bangor and ca 15 miles SE of Oroville. 343 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC46323  Isoetes nuttallii Lowell Ahart 1989-5-23 6268 Butte In Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC60642  Isoetes nuttallii Vernon H. Oswald 1993-4-15 5270 Butte Upper Bidwell Park, Chico, E of Upper Park Rd. slightly S of Parking Area O between Salmon Hole and Devil's Kitchen. 170 Comment
  JEPS106158  Isoetes nuttallii Lowell Ahart 2004-4-4 10717 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  SD116543  Isoetes nuttallii Barbara Ertter, Jeff Strachan, Lowell Ahart 1980-5-7 3289 Butte Peter Ahart Ranch ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfields near ponds 29 Comment
  UC1259505  Isoetes nuttallii Lowell Ahart 1979-4-6 Butte 3 mi. n.w. Bangor (w. side of N. Honcut Creek); N. Honcut Creek 110 Comment
  CAS-BOT-BC61869  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte in Valley Grassland, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99 68 Comment
  SEINET11268265  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte Intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (Air) southwest of Forbestown.; 0 732 Comment
  CHSC30733  Jensia rammii M. S. Taylor 1980-5-27 2707 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  SEINET10938201  Juncus Mary Susan Taylor 1980-5-27 Taylor 2676 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
  CHSC61932  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte On the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  UCD141290  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2.5 miles east of Honcut. 140 Comment
  CHSC45240  Juncus balticus S. C. Morey 1983-7-28 629 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC6672  Juncus balticus Marilyn Lee 1968-4-19 102 Butte Along W. side of Cherokee Rd., ca. 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Comment
  UC600806  Juncus bufonius H. F. Copeland 1930-7-28 Butte Jonesville, bu Humbug Road Jonesville 1828 Comment
  CHSC36969  Juncus bufonius var. bufonius M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4366 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  CHSC47529  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2179 Butte Open pasture field, south-west of the intersection of Nelson Avenue and 20th. Street, Thermalito. 60 Comment
  CHSC94621  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 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
  JEPS117241  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  UC1609485  Juncus bufonius var. congestus Lowell Ahart 1993-5-15 6940 Butte ca. 2 mi. w. Biggs (n. side of Biggs Princeton Rd.) 30 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC38919  Juncus capitatus Vernon Oswald 1982-4-26 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC47541  Juncus capitatus Lowell Ahart 1980-5-11 2241 Butte Open pasture field on the west side of the Pentz Magalia Highway, about 1/2 mile south-west of Kunkle Reservoir, about 3 miles south of Paradise. 457 Comment
  CHSC112461  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC96909  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  CHSC59020  Juncus hemiendytus var. hemiendytus Lowell Ahart 1992-7-26 6860 Butte In a small meadow, about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  CAS-BOT-BC312670  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte Table Mt. 400 Comment
  CAS-BOT-BC110149  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Peter Ahart Ranch, about 2.25 miles north and 0.5 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS84924  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC111365  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-4 17984 Butte About 100 feet southwest of the lone oak tree, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CHSC27049  Juncus leiospermus var. leiospermus Lowell Ahart 1978-4-17 1644 Butte Table Mountain, 6 mi n of Oroville. On the bottom of a small vernal pool. The pool is on top of Table Mountain where it is open and where people park their cars to look at the flowers. The park area is the largest on the top of the mountain. 400 Comment
  SEINET3450948  Juncus leiospermus var. leiospermus Unknown 2003-4-15 10095 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, 100 feet west of Hendricks ditch 270 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC110408  Juncus orthophyllus Lowell Ahart 2012-9-5 18441 Butte On the east sided of the South Fork of the Feather River, about 300 yards northeast of the County Road where it crosses the South Fork of the Feather River, about 3/4 mile (air) southwest of Pilot Peak, about 8 1/2 miles (air) northeast of La Porte. 1882 Comment
  HSC100818  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the N edge of a good forest road, W edge of Know-northing Creek, ~150 yd. N of Lumpkin Ridge Rd., 5 (air) mi. NE of Feather Falls. 1225 Comment
  CHSC40001  Juncus oxymeris Lowell Ahart 1983-8-16 4297 Butte Along the edges of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  POM110898  Juncus oxymeris C. C. Bruce, J. Bruce 1897-05 1884 Butte Chico ion Humboldt road Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  CHSC26748  Juncus patens M. S. Taylor; M. Hayes 1977-8-16 1446 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC50383  Juncus patens Vernon Oswald; Lowell Ahart 1990-5-26 4256 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC102623  Juncus tenuis Lowell Ahart 2009-6-18 15910 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcutt Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC32375  Juncus tenuis J. D. Jokerst 1980-6-14 837 Butte Bald Rock, on its N slopes. 914 Comment
  CHSC98993  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte Damp bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  JEPS114823  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte below the high water mark of Lake Oroville, on the N side of the South Fork of the Feather River, about 50 yds E of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 243 Comment
  JEPS116054  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  UCR208969  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte East side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Rd., about 13 miles (air) northeast of Oroville 1012 Comment
  CHSC107600  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. Comment
  CHSC27160  Juniperus chinensis var. pfitzeriana M. MacArthur 1968-6-22 284 Butte SE wall of PSA Bldg. On CSUC campus. 60 Comment
  CAS-BOT-BC235674  Keckiella breviflora var. glabrisepala Lowell Ahart 1989-5-31 6329 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC44720  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-2 176 Butte Along Hwy 32 ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of its jct with Forest Ranch Rd. 609 Comment
  NY786845  Keckiella breviflora var. glabrisepala J. L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609.6 Comment
  NY790276  Keckiella corymbosa J. V. Monachino 1952-7-23 s.n. Butte Oroville, at outskirts of the city on the Feather River. Comment
  POM161683  Kelloggia galioides E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  SEINET10582525  Kickxia elatine Mary Susan Taylor 1978-9-8 Taylor 1895 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  CHSC38825  Koeleria phleoides Vernon Oswald 1983-4-20 349 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). Along a pathway. 91 Comment
  RSA754528  Lactuca saligna L. Ahart 2009-8-3 16254 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CDA7509  Lactuca saligna T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  JEPS115713  Lactuca scariola var. integrata Lowell Ahart 2009-8-3 16251 Butte On the east side of Ten Mile House Road, just northeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD133543  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham. Comment
  JEPS19936  Lagophylla glandulosa C. C. Parry 1881-11-1 Butte Chico Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC30546  Lamarckia aurea J. D. Jokerst 1980-3-23 93 Butte Along sides of Hwy 70 at its jct with the West Branch of Feather River. Comment
  CHSC83989  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, about 1/8 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 326 Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  CHSC3997  Lasthenia californica J. W. Cherry 1967-3-26 Butte On either side of Bidwell Park road, .3 mi. e. of Salmon Hole. 170 Comment
  CHSC8117  Lasthenia californica J. G. Moore 1969-4-13 74 Butte Pentz Rd., 200 yds. e of Hwy. 99, on s side of road. 60 Comment
  POM55160  Lasthenia californica E. B. Copeland 1903-4-10 3038 Butte Chico Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  POM29957  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  CHSC46247  Lasthenia glaberrima Vernon Oswald 1989-4-27 3750 Butte Wurlitzer Unit, Vina Plains Preserve. North of the woodland and E of Cana-Pine Creek Rd. 56 Comment
  UC2061406  Lasthenia gracilis Rachael L. Olliff Yang with Meagan F. Oldfather 2017-4-5 12 Butte Table Mountain, about 100 m North of the main public parking lot. Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC77987  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte Near the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC57806  Lathyrus cicera Vernon H. Oswald; John Dittes 1992-4-28 4925 Butte Near the southern end of Libby RD in SE Paradise. 469 Comment
  RSA21488  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi . no. of Durham. 46 Comment
  CHSC38494  Lathyrus jepsonii var. californicus Vernon Oswald 1983-4-20 348 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). 91 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CHSC113653  Lathyrus latifolius L. P. Janeway 2014-5-29 11279 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CAS-BOT-BC213295  Lathyrus sulphureus J. H. Morrison 1939-5-8 s.n. Butte Durham Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC42560  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET956196  Lathyrus sulphureus Lowell Ahart 1987-1 5621 Butte South of the Forbestown Ditch, about 2.5 miles north-east of Forbestown. 869 Comment
  CHSC28159  Lathyrus tingitanus R. J. Goedl 1979-4-21 32 Butte Ca. 5 mi n of Oroville, 5 ft w of Cherokee Mountain Road. 335 Comment
  CHSC3305  Lathyrus tingitanus M. L. Hillier 1966-5-1 Butte Along rd. side 7 miles n.e. of C.S.C. Admin. building on Humbug Rd. Comment
  JEPS115691  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 Butte On the north 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
  CHSC375  Layia fremontii E. Canfield 1904-4-1 Butte Richardson Springs road. 84 Comment
  CHSC8140  Layia fremontii B. Hamilton 1969-4-20 105 Butte Found 1 mile south of Pentz Rd on Highway 99 along roadside. Comment
  CHSC90986  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  POM183412  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC52966  Lemna gibba Vernon H. Oswald 1991-2-23 4470 Butte Chico Sewer Treatment Plant on River Rd, ca. 4.5 mi w of Chico. In an irrigation ditch along the west boundary of the treatment plant. 39 Comment
  JEPS98546  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC65988  Leontodon saxatilis subsp. longirostris Vernon H. Oswald 1996-5-9 7544 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS119756  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  POM70456  Lepechinia calycina C. C. Bruce 1898-05 2382 Butte County seat grade. Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  RSA500419  Lepidium latipes Vernon H. Oswald, L. P. Janeway 1989-4-17 3735 Butte Butte Sink Wildlife Area (W portion of Schohr Ranch), between the ranch road and Little Dry Creek near the S gate on Gridley-Colusa Hwy. 18 Comment
  CHSC38421  Lepidium nitidum var. nitidum Vernon Oswald 1983-2-9 66 Butte Upper Bidwell Park, Chico, near the Rod and Gun Clubhouse at Horseshoe Lake. 103 Comment
  SEINET10907332  Lepidium perfoliatum Lowell Ahart 1985-4-1 Ahart 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  JEPS115285  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS98288  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte 3 mi W of Honcut (E margin of road to Honcut Substation, on S side of Lower Honcut Road, about 200 ft E of Hwy 70) 27 Comment
  JEPS102334  Leptochloa dubia Lowell Ahart 2000-11-4 8714 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
  CAS-BOT-BC226524  Leptosiphon acicularis Lowell Ahart 1971-4-21 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
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Jul 19 2018
  CHSC52105  Leptosiphon bicolor M. S. Camp 1974-4-27 26 Butte N side of Table Mt., 6 mi N of Oroville. Comment
  CHSC116163  Leptosiphon ciliatus Lowell Ahart 2015-6-16 20236 Butte On the west side of the paved road, 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
  JEPS124394  Leptosiphon ciliatus Lowell Ahart 2015-6-16 20236 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. Comment
  CHSC86596  Leptosiphon filipes L. P. Janeway 2003-5-7 7779 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  SJSU8718  Leptosiphon filipes J. B. Willis Jr. 1969-5-3 91 Butte near Cherokee Rd 7.5 mi NE of Oroville Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CAS-BOT-BC341741  Lessingia nana A. A. Heller 1922-8-25 13734 Butte On the Richardson Springs road about 4 miles from Chico Comment
  CHSC102843  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC116146  Lessingia nemaclada Lowell Ahart 2015-10-26 20587 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 228 Comment
  CHSC94563  Lessingia nemaclada Lowell Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  RSA388118  Lessingia virgata J. E. Sowder 1933-6-15 1423 Butte 1 mile west of Tres Vias 46 Comment
  UCD134099  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 miles west of Oroville. 45 Comment
  JEPS46191  Leucothoe davisiae Duncan Dunning Butte near Inskip (Lassen National Forest); Lassen National Forest Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  JEPS93942  Ligusticum californicum Vernon H. Oswald and Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Road 1 mi w of Four Trees; Four Trees-Coyote Gap Road 1578 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  RSA767487  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte Bottom of small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5.5 air miles northeast of Oroville. 399 Comment
  CAS-BOT-BC110625  Limnanthes alba Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch, Honcut. 50 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
  SEINET12182115  Limnanthes alba Unknown 1890-1 s.n. Butte State Normal School, Chico Comment
  HSC97149  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte 'Meghdadi Property' in SE Chico, ca. 0.5 km N of Doe Mill Rd., ca. 0.5 km E of S end of Potter Rd., and 0.25 km W of old stone fence. Comment
  HSC23392  Limnanthes douglasii Willis Ball 1970-3-7 85 Butte Growing 1/4 mi. E of Hwy. 99E, beside Skyway to Paradise from Chico. 61 Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  CHSC3540  Limnanthes douglasii subsp. rosea John Francis 1966-3-21 80 Butte 0.7 mile N. of intersection of Pentz Rd. and Hwy. 99E (on Pentz Rd.). Beside road. Comment
  SJSU15294  Limnanthes douglasii subsp. rosea Lisa Morton 2002-3-24 11 Butte Upper Bidwell Park, Base of N. Rim Trail 50 Comment
  POM86188  Limnanthes douglasii subsp. rosea R. M. Austin 1883-05 s.n. Butte Mesa. Comment
  UCD116438  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte east of Chico airport. Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 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, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  SEINET9369866  Linanthus filipes Unknown 1996-7-9 13171 Butte Plumas National Forest Comment
  CHSC43218  Linnaea borealis var. longiflora L. P. Janeway 1987-6-19 2225 Butte Along Sly Cr near road crossing, 2.1 mi from the Challenge-LaPorte Rd towards the SE side of Sly Cr Reservoir. 1097 Comment
  SD2733  Linum lewisii E. B. Copeland 1929-7-17 Butte Above Jonesville 2000 Comment
  CHSC55621  Lipocarpha L. P. Janeway; C. A. Janeway 1986-10-4 1902 A Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  JEPS98349  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte 12 air miles SW of Chico (E edge of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry. 2 mi SE of Ordbend) 32 Comment
  CDA39122  Lipocarpha aristulata L. Ahart 2000-10-15 8709 Butte On the east edge of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 (air) miles southwest of Chico. Comment
  CHSC28131  Lithophragma bolanderi J. D. Jokerst 1979-4-28 207 Butte N bank of Rock Crk., 150 yds nw of intersection Rck Crk. Rd. and Cohasset Hwy. 121 Comment
  RSA633337  Lithophragma parviflorum Michael A. Vincent, Ethan H. Freid 1998-4-6 8133 Butte Table Mountain 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
  CHSC65435  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1988-3-22 3261 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  CAS-BOT-BC428451  Lithophragma trifoliatum Lowell Ahart 1980-3-26 2051 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  JEPS108980  Lithospermum californicum Lowell Ahart 2006-6-9 12641 Butte In the center of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  UCR190828  Lithospermum californicum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC31593  Logfia gallica L. Ahart 1974-4-24 435 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC342384  Logfia gallica John Thomas Howell 1962-6-16 37560 Butte Magalia 731 Comment
  JEPS103519  Lolium perenne Lowell Ahart 2002-6-2 9675 Butte Drainage, E of the large exposed drain pipe, road cut on the S side of Lumpkin Road, ca 1 mile NE of the intersection of Lumpkin Road and Forbestown Road, ca 12 miles (air) E of Oroville. 548 Comment
  JEPS117707  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte Both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico 172 Comment
  CDA38385  Lomatium dasycarpum subsp. tomentosum L. Heinricks 1960-4-25 s.n. Butte Northwest corner of Chico & Cottonwood Roads. 0 Comment
  HSC66090  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-3-30 2412 Butte N side of Big Chico Creek, Salmon Hole, Upper Bidwell Park, Chico 244 Comment
  CHSC42609  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  CHSC26811  Lomatium marginatum M. S. Taylor 1978-5-6 1597 Butte Magalia. 609 Comment
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  UCD150864  Lomatium marginatum var. marginatum W. R. Powell 1968-5-17 1508 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  CHSC29759  Lomatium utriculatum J. D. Jokerst 1980-4-21 631 Butte Top of North Table Mt., ca. 1.0 mi N of Cherokee Rd., at water falls of North branch of Coal Cr. 381 Comment
  CHSC29999  Lomatium utriculatum L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA132615  Lomatium vaginatum Copeland 1903-5-2 3252 Butte Chico Comment
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC195  Lonicera hispidula H. Goodyear 1939-5-4 Butte Honey Run grade 457 Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  POM46195  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  UC1562404  Lonicera interrupta Lowell Ahart 1990-6-16 6510 Butte sw Forbestown Generator (n side of the dirt road, se side of reservoir); Forbestown Reservoir 487 Comment
  CHSC3213  Lonicera japonica Susan Carrauthers 1966-5-9 149 Butte Next to foot bridge near Physical and Life Science building, Chico State College. Comment
  CHSC109768  Lotus corniculatus Lowell Ahart 2012-10-28 18525 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC52339  Lotus corniculatus Pauleen Broyles 1987-5-21 1044 Butte The Nature Conservancy Vina Plains Preserve. Abundant on N bank of Pine Creek. Comment
  UC726026  Lotus grandiflorus var. grandiflorus A. A. Heller 1938-5-28 15125 Butte w of Pulga (on the Feather River Highway) 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
  UC204729  Lotus humistratus A. A. Heller 1914-5-8 11377 Butte the Clear Creek to Paradise grade Comment
  SEINET10906967  Lotus micranthus Lowell Ahart 1983-5-13 Ahart 3991 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  UC1562277  Lotus nevadensis Lowell Ahart 1990-7-4 6539 Butte 0.5 mi sw Enterrpise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Sierra Nevada, Lake Oroville 243 Comment
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 Comment
  JEPS114736  Lotus strigosus Lowell Ahart 2008-5-12 14734 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
  CHSC33361  Lotus wrangelianus R. M. Winchell 1980-4-16 8 Butte Bidwell Park e of Chico along dry wash. Comment
  UC1191767  Ludwigia peploides subsp. peploides Herbert L. Mason and Verne Grant 1946-8-14 13019 Butte canal near big pond on Sacramento Outing Club; Butte Sink, Sacramento Outing Club Comment
  UCD66034  Ludwigia peploides subsp. peploides B. J. Grewell; R. McKee 2006-8-17 06- 42 -LU Butte Gray Lodge Wildlife Area north of Sutter Buttes. 21 Comment
  CHSC65559  Lupinus albicaulis L. P. Janeway 1995-6-20 4805 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC929  Lupinus albicaulis L. Nelson 1935-5-25 Butte Humboldt road. 457 Comment
  SEINET10870942  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22n,r4e,sec.1 se 1/4 se 1/4. Pulga quad. On serpentine on rocky ridge, both Side of ponderosa way (rim road), 6.1 miles n of jarbo gap on hwy 70. With Pteridium aquilinum, calocedrus decurrens 823 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
  CAS-BOT-BC196245  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  JEPS108562  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
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  CHSC40600  Lupinus bicolor subsp. tridentatus J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1960 Butte N of Kunkle Reservoir, on ridge s of Paradise. 457 Comment
  JEPS113885  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada; Plumas National Forest; along the road to Cascade 1.2 road km N-NW of its crossing of Fall River; 0.3 air km E of the confluence of Dark Canyon at Fall River 1067 Comment
  SEINET6655084  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 4721 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City.; 0 1500 Comment
  CHSC96219  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  CHSC90024  Lupinus microcarpus Keith Bunney 1991-4-21 1 Butte In empty lot n side of Hwy 162, 1.6 mi e of Hwy 99. 76 Comment
  CHSC40305  Lupinus microcarpus var. densiflorus Lowell Ahart 1985-5-6 7932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mi south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  SEINET10490837  Lupinus nanus subsp. nanus Taylor 1981-5-14 Taylor 3528 Butte Oroville quad. Valley grassland, nw corner of the jct of wheelock rd and hwy 70, Ca 5 mi n of oroville. Associates: amsinckia intermedia. A migrant? (Comment by d.b. Dunn). T.21n, r.3e, sec.36 (se 1/4, ne 1/4). 137 Comment
  CHSC25057  Lupinus nanus var. apricus Mark Johnson 1974-5-1 22 Butte 1/2 mile s of Butte Creek, 1 mi se of Covered Bridge and Honey Run Road, 10 mi se of Chico. 228 Comment
  RSA715922  Lupinus pachylobus L. P. Janeway 2005-3-10 8347 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CHSC3924  Lupinus polycarpus Wayne O. Baum 1967-3-17 10 Butte In triangle area, on e. side of Cohasset Rd. and ca. 3.2 mi. n. of Chico. 60 Comment
  CHSC105808  Lupinus polyphyllus var. burkei Lowell Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC52708  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi E of a spur road from the Concow Road, which is 1.0 mi SW of Jones Meadow. Meadow. 1798 Comment
  UC1594729  Luzula comosa var. laxa Lowell Ahart 1992-8-26 6845 Butte About 1/2 mile north of the Carr Mine about 2 (air) miles south of Snow Mountain 1767 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 Comment
  JEPS110179  Luzula macrantha Lowell Ahart 2006-4-28 12547 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 318 Comment
  CAS-BOT-BC441204  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Near Hurleton 600 Comment
  CDA42943  Lycopus americanus L. Ahart 2012-10-2 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC37380  Lycopus americanus R. A. Schlising 1980-8-3 3963 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC43841  Lycopus americanus B. Castro 1987-8-25 208 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99, ca 2.1 mi s of Skyway in Chico. 68 Comment
  UCD124965  Lycopus americanus L. E. Hazeltine 1916-6-24 s.n. Butte Chico. Comment
  JEPS127012  Lythrum hyssopifolia Lowell Ahart 2016-5-24 20861 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UCD149879  Lythrum hyssopifolia V. S. 1969-9-18 s.n. Butte Gray Lodge Wildlife Area, Field 23. Comment
  CHSC47443  Lythrum portula Lowell Ahart 1979-5-25 1889 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  JEPS87530  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1609235  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD80090  Madia elegans CNPS SN Foothill Team 2005-5-5 SNFN 0158 e Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CAS-BOT-BC342721  Madia elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  SEINET10474802  Madia elegans subsp. densifolia Mary Susan Taylor 1979-8-4 Taylor 2172 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
  CHSC84146  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the east side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC62715  Madia exigua L. P. Janeway 1993-6-9 4377 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. Edge of dirt road. 621 Comment
  JEPS124028  Madia exigua Lowell Ahart 2015-6-16 20231 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  RSA755762  Madia exigua L. Ahart 2009-5-23 15757 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, 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. 382 Comment
  JEPS117380  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC97018  Madia gracilis L. P. Janeway 2007-7-26 9072 Butte Northern High Sierra Nevada. Plumas National Forest; about 160 m. west of the French Creek Road crossing of French Creek near the mouth of Ram Creek. 622 Comment
  CHSC6014  Magnolia M. MacArthur 1968-6-19 269 Butte NE end of PSA bld., Chico State College. 60 Comment
  SEINET10473908  Malacothrix californica Mary Susan Taylor 1974-5-3 Taylor 216 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CHSC3917  Marah fabacea var. agrestis Wayne O. Baum 1967-3-13 27 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway, along cliff bank. 304 Comment
  CHSC29019  Marah watsonii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2437 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi e of Oroville. 365 Comment
  RSA0028781  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 Comment
  CHSC56848  Matricaria discoidea R. L. Ondricek-Fallscheer 1983-5-8 169 Butte Driveway in front of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 188 Comment
  CHSC81219  Matricaria discoidea J. Trizzino 2001-4-25 61 Butte Chico Avenue, between Crouch Avenue and Lone Pine Avenue. 45 Comment
  UC726322  Medicago A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CHSC111369  Medicago lupulina Lowell Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park,Chico. 79 Comment
  CHSC75971  Medicago polymorpha Lowell Ahart; Vernon Oswald 1999-8-13 8162 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
  CDA4225  Medicago scutellata H. K. Wagnon 1956-6-1 Butte In vicinity of Chico Plant Intro. Gardens. 0 Comment
  JEPS103561  Melica aristata Lowell Ahart 2002-6-21 9745 Butte On the N 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). 1158 Comment
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CAS-BOT-BC269391  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River; ca. 20 air mi ne of Oroville 487 Comment
  CHSC101768  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC67412  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2218 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  UC600752  Melica fugax H. F. Copeland 1929-6-12 1210 Butte near mouth of Willow Creek (Jonesville); Jonesville 1524 Comment
  CHSC50852  Melica stricta Vernon Oswald; Lowell Ahart 1990-7-19 4374 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1950 Comment
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CHSC30544  Melica torreyana J. D. Jokerst 1980-3-23 490 Butte Along edges of old Cherokee Flume. 0.5 mi W of S end of Bridge on Hwy 70 over W Branch of Feather River. 10 mi N of Oroville. Comment
  CHSC58288  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte On the west side of a stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  CHSC102626  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
  CHSC102627  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  HSC100741  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd., Upper Bidwell Park, ~3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 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
  CAS-BOT-BC428763  Micranthes californica Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  UCD102799  Micranthes californica L. Ahart 1975-3-3 700 Butte Near north boundary of ranch near North Honcut Creek; Peter Ahart Ranch, Honcut. Comment
  CHSC41285  Micranthes oregana S. C. Morey 1983-7-21 504 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC3894  Micropus californicus var. californicus L. E. Dunkel 1965-6-4 16 Butte At top of hill ca. 1/2 mi. n of Richardson Springs entrance gate on Cohasset Rd. 45 Comment
  JEPS115318  Micropus californicus var. californicus Lowell Ahart 2009-4-17 15554 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  RSA712992  Micropus californicus var. californicus L. Ahart 2006-5-10 12624 Butte North side of Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bride across the North Fork of the Featheer River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 386 Comment
  RSA754454  Micropus californicus var. californicus L. Ahart 2009-4-17 15554 Butte S slope of a ridge, about 300 yards W of Highway 32, near the S boundary, Upper Bidwell Park, about 5 air miles NE of Chico. 352 Comment
  HSC23411  Micropus californicus var. californicus Carolyn Fante 1971-4-18 2 Butte N side of Pentz Rd. 76 Comment
  SEINET11806700  Micropus californicus var. californicus P. J. Minton 1980-1 1 Butte E of Chico, ca 8.1 mi from junction of Rt. 99 on Rt. 32 488 Comment
  CHSC38383  Microseris acuminata Vernon Oswald 1983-4-4 270 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft e of the power lines. 249 Comment
  CHSC31605  Microseris douglasii L. Ahart 1978-4-27 1665 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  SEINET10496808  Microsteris gracilis Mary Susan Taylor 1981-3-16 Taylor 3412 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET10570194  Mimulus bicolor Mary Susan Taylor 1986-5-6 Taylor 5619 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  POM252817  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico. 244 Comment
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  RSA309183  Mimulus glaucescens Robert F. Hoover 1936-5-21 1158 Butte 3 miles north of Chico Comment
  SEINET12326993  Mimulus glaucescens Unknown 1984-1 3 Butte ca 6 mi NE of Wildwood AVe, SE side of road, 0.25 mi NE on trail 84 Comment
  JEPS126560  Mimulus guttatus Lowell Ahart 2016-5-24 20862 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  JEPS80614  Mimulus guttatus M. S. Taylor 1980-4-27 2552 Butte ca. 1 mi s Nimshew (0.5 mi e of Nimshew Rd., on n side of Ponderosa Way Rd.) 609 Comment
  RSA754820  Mimulus guttatus L. Ahart 2009-6-19 15926 Butte 30 yards south of the fence and about 100 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
  RSA795592  Mimulus guttatus Christopher T. Ivey 2010-6-7 374 Butte Honey Run Road, 3.0 km northeast of bridge crossing Butte Creek, in wet meadow and roadside ditch. 165 Comment
  POM43694  Mimulus guttatus C. C. Bruce 1897-05 2104 Butte Iron Canyon Comment
  SEINET8269133  Mimulus guttatus C. E. Wickstrom 1964-3-3 15 Butte north rim of Big Chico Creek Canyon, vic. of Salmon Hole, upper Bidwell Park; Cico. Comment
  JEPS117136  Mimulus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 304 Comment
  POM5161  Mimulus kelloggii A. A. Heller, H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek). Comment
  JEPS115182  Mimulus moniliformis Lowell Ahart 2009-6-30 15978 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 269 Comment
  CHSC44792  Mimulus moschatus R. Banchero 1980-6-17 247 Butte Ca 1.2 mi N of the jct of Coutolenc and Coutolenc-Hupp Rds, 0.7 mi S of the jct of the Skyway and Coutolenc Rds. 914 Comment
  CHSC64018  Mimulus moschatus B. Castro 1987-8-29 213 Butte At s edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 mile E of Hwy 99 bridge. 60 Comment
  POM308489  Mimulus moschatus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3082 Butte Feather River Hwy. Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  HSC92448  Mimulus pilosus L. Ahart 1982-8-22 3752 Butte Along edges of N Honcut Creek, a little S of the Peter Ahart Ranch, ca. 0.75 mi. N and 2.75 mi. E of Honcut, ca. 12 mi. S of Oroville 40 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
  UC886324  Mimulus primuloides A. A. Heller 1914-6-22 11497 Butte Chico Meadows 1219 Comment
  SFV3401  Mimulus torreyi M. L. Vincent 1960-7-12 96 Butte Sierra Nevada On shore of new Paradise Dam, north of Paradise. 780 Comment
  CHSC4465  Minuartia californica C. Glascock 1965-3-23 347 Butte Ca. 1 mi. S of Us99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. line. Comment
  JEPS97433  Minuartia californica Lowell Ahart 1995-5-30 7588 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  HSC93374  Minuartia californica L. Ahart 1995-5-30 7588 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  JEPS98679  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte 10 air miles NE of Oroville (S side of the dirt road, S side of the Oak Grove Cemetery, about 1/2 mi SE of Hurleton) 548 Comment
  CHSC41356  Monardella breweri subsp. lanceolata R. A. Schlising; J. D. Jokerst 1980-7-2 3812 Butte NE of Forest Ranch, at junction of Ponderosa Way and Garland Road. Comment
  CAS-BOT-BC318571  Monardella odoratissima subsp. pallida H. F. Copeland 1920-8-29 135 Butte Jonesville woods 1219 Comment
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC67804  Monardella venosa James D. Jokerst; Barbara Castro 1992-5-19 3355 Butte Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. Cascade Range Foothills. 76 Comment
  CDA40936  Monardella venosa James D. Jokerst & Barbara Castro 1992-5-19 3355 Butte Unnamed canyon north of Nugen Canyon on the south side of Neal Rd. near the Butte County Sanitary Landfill. Comment
  CHSC31126  Monardella villosa subsp. villosa L. Ahart 1980-7-4 2453 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  SEINET10572756  Montia Mary Susan Taylor 1980-5-27 Taylor 2652 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC57135  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-22 3055 Butte Upper Coon Hollow; just below the saddle between Coon Hollow and Chips Creek. 1920 Comment
  CHSC84468  Montia diffusa Lowell Ahart 2003-7-12 10378 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
  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
  CHSC46731  Montia fontana subsp. amporitana Lowell Ahart 1973-3-7 164 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  SEINET516349  Montia fontana subsp. amporitana Lowell Ahart 1974-12-11 301 Butte Growing on early drying soil near the edges of large rocks, Peter Ahart Ranch, about 1 1/4 mi. N and 1 1/4 mi. E of Honcut, about 12 mi. S of Oroville. 43 Comment
  CHSC40382  Montia fontana subsp. chondrosperma L. Ahart; J. Jokerst 1985-5-10 4952 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC54371  Montia fontana subsp. chondrosperma M. Bailey 1991-3-8 547 Butte Butte College campus, near edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CAS-BOT-BC233762  Montia parvifolia Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC23717  Montia parvifolia M. S. Taylor 1976-5-5 1114 Butte Abundant along creek, ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  JEPS117911  Montia parvifolia L. P. Janeway 2008-6-22 9429 Butte Along Four Trees Road crossing of South Branch Mill Creek (a tributary to North Fork Feather River) North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  UC1586595  Montia parvifolia Vernon H. Oswald and Lowell Ahart 1991-6-5 4652 Butte 1.5 air mi nw of Platte Mountain Lookout (dirt road to Minnie-Ha-Ha Mine on Big Chico Creek, on w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 792 Comment
  SEINET10572727  Montia saxosa Mary Susan Taylor 1976-4-24 Taylor 1070 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC44925  Muhlenbergia andina Lowell Ahart 1988-7-31 6147 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
  CHSC34187  Muhlenbergia filiformis L. Ahart 1981-9-15 3168 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CAS-BOT-BC275345  Muhlenbergia mexicana J. W. Stacey 1933-9-29 s.n. Butte Chico Comment
  CHSC94531  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CAS-BOT-BC274931  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC44381  Myosotis discolor Lowell Ahart 1988-6-23 6080 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
  SEINET10536217  Myosurus minimus subsp. apus Mary Susan Taylor 1980-3-28 Taylor 2401 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  SEINET11763780  Najas graminea H. L. Mason, Grant, V. 1946-1 13047 Butte near caretakers house, Greylodge Game Refuge Comment
  UC1100015  Najas guadalupensis Herbert L. Mason, Verne Grant 1946-8-14 13043 Butte Butte Sink Comment
  UCR146291  Najas guadalupensis Ellen Dean, Et al. 2001-8-20 852 Butte Biggs UC Field Station; N of town of Biggs, west of jct. of Hwys 99 and 162; north side of Mailton Road, c. 1/8 mi east of jct. with Riceton Hwy; along second N-S running dirt road leading N into rice field, at intersection with first E-W running dirt road, corner of rice field 100 Comment
  CHSC24489  Nama lobbii M. S. Taylor 1976-6-28 1165 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  CHSC48464  Nama lobbii Vernon Oswald 1983-7-19 885 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  CHSC42138  Narthecium californicum Lowell Ahart 1984-7-19 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. 1600 Comment
  CHSC25049  Nassella pulchra L. Morgan 1972-4-29 1 Butte Near Upper Bidwell Park Rd. on the corner of Archery Range exit road. 60 Comment
  CHSC34987  Navarretia divaricata R. A. Schlising; R. Banchero 1980-7-11 3879 Butte Merrimac, in NE part of county. 1203 Comment
  UC1124097  Navarretia divaricata P. L. Johannsen 1936-7-17 937 Butte 2.5 mi sse Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  UCD48390  Navarretia divaricata H. F. Copeland 1930-7-28 s.n. Butte Jonesville, Butte County. Beside South Willow Creek in shady flat. 1828 Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  JEPS105972  Navarretia filicaulis Lowell Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  RSA699921  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where the road goes east to the water ditch, about 0.5 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  SEINET10969161  Navarretia filicaulis Mary Susan Taylor 1980-7-6 Taylor 3063 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  JEPS120937  Navarretia intertexta Lowell Ahart 2013-5-23 18705 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC2375  Navarretia leucocephala R. Carter 1965-5-13 196 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  UCD48505  Navarretia leucocephala H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CAS-BOT-BC230334  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte Near junction of Chico-Paradise Road, 3 miles S of Chico Comment
  CHSC103711  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
  JEPS107890  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11818 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 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
  UCD80642  Navarretia leucocephala subsp. leucocephala CNPS SN Foothill Team 2005-5-3 SNFN 0198 d Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  CHSC43943  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-5-18 3315 Butte East side of Bruce Rd. ca. 0.8 mi n of the Skyway in southeast Chico. 79 Comment
  CHSC52110  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  RSA717293  Navarretia pubescens L. Ahart 2005-5-28 11822 Butte on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  UC1719846  Navarretia pubescens David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  JEPS107884  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  SEINET10496837  Navarretia tagetina Mary Susan Taylor 1974-5-7 Taylor 230 Butte In patches on N side of Pentz Road, ca. 3 mi E of Hwy 99. Valley Grassland, with Brodiaea sp., Calochortus luteus. Comment
  SEINET12332632  Navarretia tagetina Unknown 1988-1 20 Butte SW corner of intersection of Hwy 99 and Broyles Rd, ca 11 mi N of Chico 67 Comment
  JEPS117327  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico 144 Comment
  UC102223 Image available Nemacladus interior Elisha Brooks Butte Enterprise; ; Enterprise, Butte Co. Comment
  SEINET10969183  Nemophila heterophylla Mary Susan Taylor 1981-4-5 Taylor 3494 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  JEPS107354  Nemophila menziesii var. menziesii Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11677 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  POM73919  Nemophila menziesii var. menziesii C. C. Bruce 1898-05 s.n. Butte [No location information on label.] Comment
  CHSC45932  Nemophila pedunculata Lowell Ahart 1975-3-18 713 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
  SBBG64789  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Crk Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  CHSC48466  Nemophila spatulata Vernon Oswald 1985-5-2 1747 Butte Dixie Rd. between Concow Rd. and Pulga Rd. at Dogwood Creek. 999 Comment
  POM199585  Nemophila spatulata H. F. Copeland 1932-6-29 s.n. Butte Jonesville. Above meadow by Butte Creek. Comment
  CDA42978  Nicotiana acuminata var. multiflora L. Ahart 2013-11-18 19279 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CDA5774  Nicotiana acuminata var. multiflora L. Ahart, Vernon Oswald 1999-8-13 8135 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC231530  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CAS-BOT-BC400070  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  CHSC62624  Oemleria cerasiformis Vernon H. Oswald; Lowell Ahart 1994-5-27 5959 Butte 0.66 miles W of Cherokee Rd. Jeep trail in Beaston Hollow on N. Table Mtn., W side of Cherokee Rd., N of Oroville. In the bottom of the hollow. 304 Comment
  JEPS119914  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte On the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC105264  Olea europaea Lowell Ahart 2010-6-20 16817 Butte On the south side of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC27217  Olea europaea P. Moyer 1971-11-7 62 Butte CSUC Campus. N bank Chico Creek. 60 Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  CAS-BOT-BC500246  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10931220  Orthocarpus hispidus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4044 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET12328377  Orthocarpus lacerus M. S. Taylor, Oswald, V. 1984-1 5393 Butte S side of Humbug Rd, ca 2 mi SW of Nimshew, ca 12 air mi NE of Chico Comment
  UC1594566  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  CHSC1173  Oxalis corniculata M. Harless 1930-3-15 Butte Chico. 57 Comment
  CHSC108975  Oxalis pes-caprae Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17808 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  LA212209  Packera eurycephala var. lewisrosei James R. Shevock; 1972-5-9 1777 Butte Feather River Canyon, Jarbo Plass. 914 Comment
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  CDA13828  Panicum dichotomiflorum G. F. Hrusa, T. D. Wilfred 1996-9-5 13556 Butte Butte Basin; Occasional on wet, open bank of Butte Creek immed. below Western Canal District Dam. Comment
  CHSC100517  Panicum dichotomiflorum Lowell Ahart 2008-11-4 15404 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC97686  Panicum dichotomiflorum Lowell Ahart 2007-11-3 14562 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UC1037260  Panicum dichotomiflorum subsp. dichotomiflorum E. Wilson 1934-9-3 49 Butte Biggs Rice Station Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CAS-BOT-BC181181  Paronychia ahartii J. D. Jokerst 1986-6-18 2744 Butte Unsurveyed portion county on the Richardson Spring 7.5 minute USGS topographic map the site is 145 mm from bottom edge of map, not including border, 181mm from left edge. 45 Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC39528  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  JEPS117133  Pectocarya pusilla Lowell Ahart 2010-5-7 16615 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC27907  Pellaea andromedifolia M. S. Taylor 1979-3-20 1957 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CAS-BOT-BC67557  Pellaea mucronata Lowell Ahart 1969-3-27 s.n. Butte Honcut - Peter Ahart Ranch 45 Comment
  SEINET10966241  Pellaea mucronata Mary Susan Taylor 1979-10-13 Taylor 2265 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC44728  Penstemon azureus R. Banchero 1980-6-17 250 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  RSA305807  Penstemon azureus James R. Shevock 1972-5-19 1776 Butte Jacob Pass, Feather River Canyon, Hwy 70. 1067 Comment
  POM252806  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 miles from Oroville on Feather River Hwy. Comment
  UC1602275  Penstemon deustus var. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville Comment
  CDA13270  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-9 13118 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC1870  Penstemon laetus var. leptosepalus 1954-5-30 Butte Flea valley, Concow road, near Stirling. 762 Comment
  CHSC29802  Penstemon laetus var. leptosepalus M. S. Taylor; J. D. Jokerst 1980-6-14 2878 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  CHSC35219  Penstemon laetus var. leptosepalus M. S. Taylor 1981-5-7 3629 Butte N side of Ponderosa Way, 0.8 mi n of Sucker Creek bridge, ca. 4 air mi sw of Feather Falls. 365 Comment
  RSA718790  Penstemon laetus var. leptosepalus L. P. Janeway 2006-6-25 8697 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC103112  Penstemon laetus var. leptosepalus D. Cleveland 1882-7-14 141 Butte Sutton House Comment
  CHSC93073  Penstemon neotericus L. P. Janeway 1994-7-5 4682 Butte Northern High Sierra Nevada. Granite Ridge; along Concow Road 0.1-0.2 mi north of junction. East side of ridge top above Camp Creek. 1310 Comment
  RSA401866  Penstemon speciosus M. M. Boney 1897-1 s.n. Butte [No location information provided.] Comment
  CHSC39892  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. 100 Comment
  UC1506779  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte ca. 3.5 mi ne of Honcut (ca. 1/4 mi s of Cox Lane, e of pole line tower) 100 Comment
  CHSC28417  Pentagramma triangularis subsp. semipallida Bruce Hamren 1978-4-24 8 Butte West Branch of Feather River. 280 Comment
  CHSC44617  Pentagramma triangularis subsp. semipallida Vernon Oswald 1984-4-9 1139 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CAS-BOT-BC211262  Perideridia bacigalupii Lowell Ahart 1985-8-15 5163 Butte 50 yards south of the road to the Forbestown Res. about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC117764  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC40224  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1848 Butte Scotts John Rd., 0.6 mi n of 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  SEINET10939819  Perideridia howellii Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4191 A Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CDA14077  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13960 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC1971  Perideridia lemmonii E. Walker 1932-7-1 Butte Magalia. 731 Comment
  CHSC43266  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of a drying pond, 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
  UCD150369  Persicaria hydropiperoides William Anderson 1963-9-27 s.n. Butte Sanborn Slough. Tule Goose Gun Club. 17 Comment
  RSA0118940  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 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 Ponderosa Dam. 244 Comment
  CDA42928  Persicaria maculosa L. Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  UC107479  Phacelia cicutaria Mrs. R. M. Austin May 1883 s.n. Butte Iron Canyon, above Chico Comment
  CHSC110127  Phacelia cicutaria var. cicutaria L. P. Janeway 2012-3-21 10797 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  CHSC101318  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC52403  Phacelia egena R. Smallwood 1969-4-25 19 Butte Butte Cr Cyn; Honey Run Rd at the Covered Bridge; 15 yds NW of old bridge. 137 Comment
  RSA31961  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  UCD80360  Phacelia heterophylla subsp. virgata CNPS SN Foothill Team 2005-5-5 SNNR 0020 Butte City of Chico, Upper Bidwell Park. 202 Comment
  CHSC39109  Phacelia imbricata Lowell Ahart 1983-6-26 4117 Butte About 15 mi ne of Oroville; about 2 mi se of intersection of Oroville/Quincy Highway and Ponderosa Way; on dry, red, rocky soils along Ponderosa Way. 500 Comment
  RSA32015  Phacelia imbricata subsp. imbricata A. A. Heller 1938-5-28 15111 Butte Near the Las Plumas road on the Feather River Highway. Comment
  UC600782  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville Comment
  UC1564794  Phacelia procera V. Oswald and L. Ahart 1989-7-12 3851 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1926 Comment
  CHSC46199  Phacelia purpusii L. P. Janeway 1988-6-16 2802 Butte Southeast-facing outcrop above Butte Cr; along road in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  CAS-BOT-BC154305  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  CHSC6182  Phalaris aquatica J. Wheeler 1968-5-16 356 Butte S side of e approach to the hwy. 32 Sacramento River Bridge. 45 Comment
  CAS-BOT-BC265890  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte Hills 8 miles north of Oroville Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  UCD89175  Phalaris minor A. A. Heller 1926-5-8 13939 Butte Heller grounds near Chico. Comment
  CAS-BOT-BC250705  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC66101  Phalaris paradoxa Vernon H. Oswald 1996-5-23 7635 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at the SW edge of Tract 9.2, Sanctuary I. 32 Comment
  UCD80589  Phalaris paradoxa CNPS SN Foothill Team 2005-5-5 SNFN 0156 Butte City of Chico, Upper Bidwell Park, off upper Bidwell Park Road on the N side of the road, about 0.75 miles E of Horseshoe Lake. 99 Comment
  CHSC6622  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U on Chico State College campus. 60 Comment
  UC1564796  Phleum alpinum V. Oswald and L. Ahart 1989-7-12 3853 Butte ca 2 mi (air) sw Lotts Lake (ca 3 mi (air) se of Philbrook Reservoir, near the headwaters of Big Kimshew Creek); headwaters of Big Kimshew Creek, sw of Lotts Lake 1901 Comment
  CAS-BOT-BC250862  Phleum pratense H. F. Copeland 1920-8-29 144 Butte Jonesville Meadow 1219 Comment
  CHSC43205  Phleum pratense Robert Banchero 1981-7-19 612 Butte Big Crane Valley. Meadow. 1584 Comment
  UC1594573  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  UC600675  Phlox austromontana E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  CHSC30052  Phoradendron densum David G. Bendix 1978-4-12 10 Butte 50 m ne of Intersection Coutelenc Road with Skyway, Magalia, CA. 830 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
  CHSC85727  Phoradendron densum G. F. Hrusa; T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada. Near summit of serpentine slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 750 Comment
  UCD102163  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  CHSC21051  Phoradendron villosum M. S. Taylor 1975-5-9 566 Butte Ca. 1/2 mi n of De Sabla turnoff, ca. 50 ft. e of the Skyway, Magalia. 731 Comment
  POM105948  Phoradendron villosum C. C. Bruce 1897-03 1786 Butte Little Chico Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC64003  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca 1.1 mi S of the Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide. 585 Comment
  RSA746978  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CHSC46177  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC50635  Pilularia americana Lowell Ahart 1990-4-23 6465 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC61203  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  JEPS102439  Pilularia americana Lowell Ahart 2001-4-15 8727 Butte Southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  JEPS117720  Pilularia americana Lowell Ahart 2010-6-9 16779 Butte About 30 yards south of the poor dirt road, about 70 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CAS-BOT-BC73147  Pinus lambertiana John H. Thomas 1974-11-3 17661 Butte Between Butte Meadows and Stirling city, 3.9 miles from Butte Meadows [Meadoes] as measured along the road. 1767 Comment
  NY61961  Pinus monticola A. A. Heller 1915-6-26 12033 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
  RSA4587  Pinus monticola E. B. Copeland 1929-7-17 331 Butte Above Jonesville. 2000 Comment
  UCD134797  Pinus monticola E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  CHSC39520  Piperia elongata Lowell Ahart 1983-6-12 4051 Butte About 1 mile south of Crystal hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC51945  Piperia unalascensis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3080 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  CHSC49562  Piptatherum miliaceum Vernon Oswald 1985-6-12 1829 Butte Bidwell State Park slightly s of the Washout on River Rd. On a bank of the river. 38 Comment
  CHSC109182  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side of Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC109060  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC26445  Pittosporum tobira Pam Moyer 1971-10-1 25 Butte CSUC Campus. Bidwell Mansion front lawn. Comment
  SEINET10932923  Pityrogramma triangularis Mary Susan Taylor 1980-3-1 Taylor 2339 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  SEINET10932925  Pityrogramma triangularis Mary Susan Taylor 1981-4-8 Taylor 3507 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  CDA34705  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC103749  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-22 16715 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
  JEPS117195  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SD122572  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1984-5-7 4590 Butte 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise. 600 Comment
  CHSC35063  Plagiobothrys greenei R. A. Schlising 1981-4-11 4022 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  CHSC42514  Plagiobothrys hispidulus Lowell Ahart 1987-5-6 5506 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC480660  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte hogwallow near head Willow Creek; Jonesville, head Willow Creek Comment
  CHSC35059  Plagiobothrys scriptus R. Schlising; J. Jokerst, R. Banchero 1981-3-22 4008 Butte S of Chico near Pentz/Durham Road intersection with Hwy 99; south of Pentz/Durham Road. 60 Comment
  CHSC39031  Plagiobothrys scriptus Lowell Ahart 1983-5-12 3971 Butte Along the power lines, about 0.5 mi ne of Hwy 99 and Pentz Roads. 65 Comment
  SEINET516433  Plagiobothrys scriptus Lowell Ahart 1977-1 1275 Butte Normal size plant, growing on damp to dry gravelly red soil along the edge of small swales, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  UC179566  Plagiobothrys stipitatus A. A. Heller 1914-4-24 11317 Butte 5 mi from Chico (Chico-Oroville road) Comment
  CDA40661  Plagiobothrys stipitatus T. C. Fuller 1958-4-15 4794 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  UC52288  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC112938  Plagiobothrys stipitatus var. micranthus B. Castro 2012-5-29 1926 Butte Sacramento Valley. Between E. Hamilton Rd and the S edge of the Thermalito Afterbay levee, ca 0.6 mi E of Hwy99. 35 Comment
  CHSC46774  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-5-4 2176 Butte On the bottom of small vernal pools and along small washes, in a pasture, south-west of the intersection of Nelson Avenue and 20th Street in Thermalito. 60 Comment
  CHSC78129  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte On the sides of an old gold mining pit, southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  SEINET7072715  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-7 s.n. Butte About 5.2 miles southeast of Bangor on the Loma Rica Road. UTM Zone 10, 641106E, 4354576mN. Coordinate datum: NAD 27. Comment
  CHSC29274  Plagiobothrys tenellus R. A. Schlising 1980-4-19 3567 Butte North of village of Feather Falls, along trail to Feather Falls (on Fall River) from ne. 792 Comment
  CHSC29276  Plagiobothrys tenellus R. A. Schlising 1980-4-7 3557 Butte 2.8 mi E of Bangor Highway, on Swedes Flat Road. 365 Comment
  CHSC46259  Planodes virginica Vernon Oswald 1989-4-20 3748 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between Butte Creek and Little Dry Creek n of Gridley-Colusa Hwy. In rice paddies. 18 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
  CHSC108795  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about 1 mile (air) northeast of Chico. 143 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  CHSC41133  Plantago erecta B. Anthony 1967-4-9 43 Butte Bare Hole, along Yahi Trail, Bidwell Park, Chico. 1828 Comment
  CHSC52098  Plantago erecta R. J. Goedl 1979-4-16 19 Butte Ca. 3.5 mi e of Highway 99, 20 ft s of Skyway, e of Chico. 213 Comment
  UCD124474  Plantago erecta Peter H. Raven 1963-5-8 18365 Butte 5 miles south of Cherokee. Comment
  JEPS115531  Plantago lanceolata Lowell Ahart 2009-5-15 15689 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SEINET10470070  Platanthera sparsiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4757 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte Comment
  CAS-BOT-BC93158  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CHSC44360  Plectritis ciliosa Lowell Ahart 1988-3-27 5939 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 335 Comment
  UCD137545  Plectritis congesta subsp. brachystemon Michael A. Vincent; Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  HSC66331  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, 100ft. W of Old Humboldt Rd. 2012 Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
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Mar 7 2011
  CHSC47627  Poa annua Lowell Ahart 1974-3-12 317 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC8573  Poa annua J. G. Moore 1969-5-7 22 Butte Salem St. between 7th and 8th Sts. on e side of road, Chico. 60 Comment
  CAS-BOT-BC254924  Poa bulbosa Lowell Ahart 1984-4-3 4534 Butte Along North Honcut Creek, about 1 mile N of and 2.75 miles E of Honcut, Peter Ahart Ranch 50 Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  SEINET10901783  Poa gracillima Mary Susan Taylor 1980-6-14 Taylor 2877 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC255787  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico Comment
  CAS-BOT-BC255236  Poa pringlei V. Oswald; L. Ahart 1988-7-29 3650 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC103983  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 320 Comment
  CHSC32590  Poa secunda subsp. secunda J. D. Jokerst; Jeri Donovan 1981-3-21 1258 Butte Ca 0.5 mi N of Horseshoe Lake (Upper Bidwell Park), Chico. where the foothills begin the initial rise. Comment
  CHSC35630  Poa secunda subsp. secunda R. E. Preston 1982-3-24 197 Butte Ca. 50 ft n of the Skyway, 1/4 mi e of Hwy 99, Chico. At edges of vernal pools. Area advertised for commercial development. 67 Comment
  CHSC41188  Poa sierrae J. D. Jokerst 1984-6-4 2043 Butte Ca 100 meters east of Camp Creek. Canyon of the North Fork Feather River. 975 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
  UC196327  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north Oroville Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  UCD125427  Pogogyne zizyphoroides Paula J. Minton 1980-5-14 1 Butte 1 mile east of Chico, around 100 ft on north side of the Skyway. 70 Comment
  CHSC33249  Polemonium occidentale R. A. Schlising 1980-7-8 3862 Butte Meadow N of Butte Creek and west of Cherry Hill Campground, several mi NE of Butte Meadows. Comment
  CHSC27706  Polemonium pulcherrimum Robert A. Schlising; Marc P. Hayes 1978-6-24 3290 Butte Probably just within Butte County line on summit of Humboldt Peak. 2133 Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  RSA107421  Polygala cornuta var. cornuta L. S. Rose 1955-6-15 55102 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  SEINET6647278 Image available Polygonum alpinum H. F. Copeland 1928-1 440 Butte neighborhood of Jonesville; Canyon of Jones Creek 1829 Comment
  JEPS108926  Polygonum arenastrum Lowell Ahart 2005-12-11 12521 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  SEINET10904502  Polygonum aviculare Mary Susan Taylor 1979-11-11 Taylor 2281 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC46585  Polygonum aviculare subsp. aviculare V. Oswald; L. Ahart 1989-7-21 3870 Butte Junction of Willow and Colby Creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. Common on an open alluvial flat on the w side of Colby Creek. 1487 Comment
  CAS-BOT-BC414190  Polygonum aviculare subsp. depressum John Thomas Howell 1961-9-22 36743 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  CHSC28768  Polygonum bidwelliae J. D. Jokerst 1978-5-21 125 Butte Ca. 200 mets. N. W. of Hwy 32, 7.7 mi. N. of Chico, top of ridge. 365 Comment
  CHSC31367  Polygonum bidwelliae C. Glascock 1965-5-11 376 Butte At edge of Skyway 2.5 km s (1.85 mi. s.) of Russell Drive, Paradise. Comment
  CHSC47470  Polygonum bidwelliae Lowell Ahart 1980-5-11 2239 Butte In an open pasture field, about 1/2 mile south-west of Kunkle Reservoir, about 3 miles south of Paradise. The plants are found west of the Pentz-Magalia Highway. 457 Comment
  RSA3842  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise Comment
  SBBG61484  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Neale grade on rd from Chico to Paradise Comment
  UC1136130  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle Comment
  UCD80666  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-2 SNFN 0195 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  JEPS112783  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Carpenter Ridge, along road to Butte Meadows, 3.2 miles NE from the junction with Highway 32 1356 Comment
  CHSC102160  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
  CHSC66901  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte On the early drying banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC414363  Polygonum californicum John Thomas Howell 1962-6-16 37589 Butte 3.5 mi. n. of Pentz 396 Comment
  UC478529  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte the Summit Jonesville 2100 Comment
  UCR66524  Polygonum douglasii H. F. Copeland 1928-8-18 0318 Butte Jonesville, Butte Creek Canyon 1529 Comment
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  CHSC27968  Polygonum polygaloides subsp. kelloggii M. S. Taylor 1978-7-19 1765 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC24893  Polypodium calirhiza T. F. Burnham 1976-4-19 19 Butte Ca. 20 ft s of Butte Creek and 0.4 ft w of Covered Bridge, 6.4 mi e of Chico. 115 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
  JEPS117728  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET10530418  Polypodium glycyrrhiza Mary Susan Taylor 1976-3-6 Taylor 1014 A Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC71217  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC233211  Polypogon maritimus Lowell Ahart 1983-10-15 3888 Butte North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC38852  Polypogon maritimus Vernon Oswald 1983-5-22 523 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  CHSC4338  Polypogon monspeliensis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park, Chico. Comment
  CDA13502  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte Sierra Nevada; immediately above Sucker Creek. 1.5 miles SSE of Feather Falls. Comment
  SEINET10530107  Polystichum californicum Mary Susan Taylor 1980-4-1 Taylor 2419 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 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-BC72267  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi n of Oroville 396 Comment
  CAS-BOT-BC72300  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-7-24 4213 Butte on the road cutbank at the Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CDA42713  Polystichum imbricans subsp. imbricans L. Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  SFV10667  Polystichum lonchitis M. L. Vincent 1963-6-8 406 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
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May 14 2014
  CAS-BOT-BC267143  Potamogeton foliosus Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  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
  RSA4631  Potamogeton illinoensis E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  CHSC46885  Potamogeton pectinatus Vernon H. Oswald 1989-9-4 3977 Butte Wurlitzer Unit, Vina Plains Preserve. In the farm pond. 56 Comment
  JEPS95859  Potamogeton pusillus var. pusillus Lowell Ahart 1999-8-22 8190 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
  CHSC45740  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-19 2224 Butte Along Sly Cr at crossing of rd to SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  CHSC45584  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2035 Butte Butte Cr between Forks of Butte and the bridge (Doe Mill Rd). 609 Comment
  CHSC50421  Potentilla glandulosa subsp. reflexa Vernon Oswald; Lowell Ahart 1990-6-27 4332 Butte Rd 23N31 northwest of Four Trees Rd, between Four Trees and Coyote Gap. 1463 Comment
  CHSC12001  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  UC860934  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC539447  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CAS-BOT-BC539450  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC1067  Proboscidea louisianica 1947-6-1 Butte River road near Chico. Comment
  SEINET10498364  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1978-7-21 Taylor 1819 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC92554  Prunus avium L. P. Janeway; C. Christofferson, M. Brown, S. Mackey Hillaire 2005-4-19 8363 Butte Northern High Sierra Nevada. Plumas National Forest; in small upper drainage of Flea Valley Creek, about 560 m east-northeast of junction of Concow Road and Rim Road (Ponderosa Way). 841 Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  CHSC27231  Prunus serrulata P. Moyer 1972-3-18 148 Butte CSUC Campus. Front lawn Sociology Bldg. 60 Comment
  JEPS107334  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC43273  Pseudognaphalium thermale Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  RSA795638  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte East edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 air miles northeast of Chico. 190 Comment
  CAS-BOT-BC361741  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1980-5-4 2160 Butte Thermalito 65 Comment
  CHSC25481  Psilocarphus brevissimus var. brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28147  Psilocarphus oregonus Robert A. Schlising; Ellen Sanders 1979-4-29 3378 Butte Richvale vernal pools, 1/4 mi n of jct Hwy 99 and Hwy 162 to Oroville; across from Thermalito Afterbay. Only in pools close to Hwy 99. Comment
  JEPS120953  Psilocarphus tenellus Lowell Ahart 2013-4-20 18555 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC33154  Ptelea crenulata J. P. Smith; J. O. Sawyer 1973-4-14 6063 Butte Rock Road 1mile west of Cohasset Road near Chico. Comment
  UCR190820  Ptelea crenulata 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
  UC726637  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte near Forest Ranch Forest Ranch; Sierra foothills Comment
  CHSC2418  Pterospora andromedea R. Carter 1965-6-21 258 Butte Found along E side of Oroville-Quincy Rd. 1.05 mi. S of Buckeye Water Hole, growing ca. 15' from road. 1219 Comment
  CHSC2448  Pterospora andromedea R. Carter 1965-7-6 274 Butte Found along E side of Oroville-Quincy Rd., 5.2 mi. N of Mountain House, ca. 15' from road in open woods. 1219 Comment
  CHSC72888  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. Between northeastern-most campsite and Butte Creek. 1325 Comment
  RSA0080541  Pyrola asarifolia M. B. Dunkle 1931-8-12 2618 Butte Paradise Valley. Comment
  CHSC54527  Pyrola asarifolia subsp. asarifolia Vernon H. Oswald; Lowell Ahart 1991-8-19 4835 Butte Marshy meadow and lake on the north side of Forest Rd 25N15, between Philbrook Reservoir and Coon Hollow. 1767 Comment
  CAS-BOT-BC466315  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1700 Comment
  UCD117808  Pyrola picta E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1600 Comment
  SEINET10973481  Pyrola picta Mary Susan Taylor 1980-8-2 Taylor 3200 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10449203  Pyrola picta f. aphylla Mary Susan Taylor 1980-7-6 Taylor 3070 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  UC2026861  Pyrus kawakamii Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18230 Butte On the north side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  CHSC109102  Quercus X morehus Lowell Ahart 2012-3-23 17799 Butte On the south side of the Old Humboldt Road cut, north end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. 395 Comment
  JEPS115052  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  CHSC6009  Quercus borealis M. MacArthur 1968-6-18 224 Butte Ca. 300 ft. NW of Big Chico Creek, by EP bld. entrance, Chico State College. 60 Comment
  CAS-BOT-BC62691  Quercus chrysolepis John Thomas Howell 1962-6-15 37437 Butte Magalia 731 Comment
  CHSC32645  Quercus chrysolepis M. S. Taylor 1981-3-18 3421 Butte In shady ravine, n side of Pulga Rd, ca. 1/2 mi e of its jct with Hwy 70 at Pulga Bridge. 487 Comment
  CHSC3597  Quercus chrysolepis Gerry Carrauthers 1966-3-6 40 Butte Ca. 3 mi N. of city of Paradise near observation point for gold nugget find. Comment
  UC1135411  Quercus chrysolepis J. E. Sowder 1933-8-4 122 Butte slope above de Sable Power House; Chico Quad. 609 Comment
  UC2026888  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18224 Butte North side of paved park road, north of South Park Drive, east of Caper Acres Playground, about 150 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CDA35902  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Cherokee Rd & Thompson Flat Rd. 73 Comment
  UCR237301  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18758 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CAS-BOT-BC86103  Quercus dumosa John Thomas Howell 1955-6-15 30497 A Butte 6 miles from paradise on road to Pentz 426 Comment
  RSA325123  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  UCR231085  Quercus kelloggii Anna M. Hurlbutt 2009-8-12 015 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  JEPS117323  Quercus lobata Lowell Ahart 2010-6-12 16803 A Butte North side of the pond and table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  UC1135701  Quercus lobata H. A. Jensen 1934-10-25 389 Butte 1.5 mi n Penty; Chico Quad., Dry Creek 152 Comment
  CAS-BOT-BC104690  Quercus wislizeni A. A. Heller 1913-3-2 10689 Butte Hills two miles N of Oroville Comment
  SEINET10477841  Quercus wislizeni Mary Susan Taylor 1979-3-20 Taylor 1937 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
  JEPS119979  Rafinesquia californica Lowell Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET12094427  Ranunculus alismifolius Unknown 1983-1 353 Butte E. of Philbrook Reservoir at county line, T25N, R5E, sec. 16, Jonesville 15' quad 1975 Comment
  CAS-BOT-BC379114  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  CHSC45511  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-6-3 467 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC118055  Ranunculus arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 227 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CAS-BOT-BC378987  Ranunculus arvensis L. L. Heinrichs 1970-5-9 s.n. Butte Biggs, East Biggs Rd., roadside in ditch E of canal Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS103494  Ranunculus bonariensis var. trisepalus Lowell Ahart 2002-4-24 9529 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
  SEINET7083219  Ranunculus canus L. Ahart 2003-5-28 10228 Butte Edges of a large vernal pool 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence west of Cherokee Road, North Table Mountain. About 7 miles north of Oroville. 39? deg. 35' 3.5" North Latitude; 121? deg. 35' 7.3" West Longitude. EX MWI. Comment
  UC765740  Ranunculus canus R. F. Hoover 1937-5-18 2232 Butte 2 mi s Nelson Comment
  UCD18745  Ranunculus canus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 38 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SBBG71846  Ranunculus canus var. canus A. A. Heller 1926-3-31 13916 Butte Nelson, 14 mi S of Chico Comment
  CHSC10560  Ranunculus hebecarpus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC52691  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 255 Butte S part of county near Bangor Hwy nw of Bangor. 182 Comment
  JEPS122012  Ranunculus occidentalis var. occidentalis Lowell Ahart 2014-7-2 19544 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
  CHSC9697  Ranunculus occidentalis var. ultramontanus Nancy Mosman 1971-7-3 51 Butte In a meadow on n side of Humboldt Road ca. 0.2 mi e of Butte Meadow Ranger Station. 1371 Comment
  RSA0111937  Ranunculus pusillus Lowell A. Ahart 2015-5-5 20139 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC53980  Ranunculus sceleratus var. sceleratus Vernon H. Oswald 1991-4-21 4508 Butte Shippee Rd, 0.3 mi east of Hwy 99, between Hwy 149 and the Thermalito Afterbay. In ditch on the north side of the road. 50 Comment
  CAS-BOT-BC74262  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  UC870831  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi below Centerville (in the Sierra foothills); Sierra Comment
  RSA518961  Rhamnus purshiana C. R. Quick 1952-6-29 5192 Butte Near spring, 0.3 miles W of Coyote Gap on Mill Creek road Comment
  CAS-BOT-BC199713  Rhododendron occidentale Lowell Ahart s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC23706  Rhododendron occidentale M. S. Taylor 1976-5-5 1101 Butte On e side of Bald Rock Rd, ca. 4 mi s of Big Bald Rock, ca. 13 mi ne of Oroville. 914 Comment
  JEPS100254  Rhynchospora capitellata Glenn L. Clifton Jul 1992 27157 Butte Flea Valley 1118 Comment
  SEINET7589325 Image available Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Pulga 7.5' quad, Northern High Sierra Nevada. Northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CAS-BOT-BC93276  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow. 1800 Comment
  SFV1617  Ribes roezlii M. L. Vincent 1962-4-15 183 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  SEINET3118964 Image available Ribes roezlii E. B. Copeland 1931-1 648 Butte Jonesville 1500 Comment
  LA205438  Ribes viscosissimum A. A. Heller; 1915-6-26 10232 Butte Sierra Nevada, summit above Jonesvillle 2133 Comment
  CHSC48903  Ribes viscosissimum var. hallii Vernon Oswald 1987-6-9 2968 Butte Near the headwaters of Scotts John Creek, 3.3. mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CAS-BOT-BC74458  Rorippa curvisiliqua Lowell Ahart 1980-8-16 2582 Butte Near Honcut. 60 Comment
  CAS-BOT-BC74462  Rorippa curvisiliqua Lowell Ahart 1985-5-31 5040 Butte Lake Oroville, about 0.5 mile SW of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, NE end of Oroville 274 Comment
  JEPS95863  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1999-8-13 8155 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
  CDA25114  Rorippa curvisiliqua var. orientalis L. Ahart 2002-10-17 9987 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC112744  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-13 19230 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. 244 Comment
  CHSC58261  Rorippa curvisiliqua var. orientalis Lowell Ahart 1992-3-21 6738 Butte Below the high water line of Lake Oroville, south of the Spillway Boat Launch Area, Lake Oroville. 243 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CDA3956  Rosa eglanteria L. Ahart 2002-5-15 9660 Butte About 100 yards southwest of Parking Lot 10, about 100 yards northeast of the buildings, on the south side of the dirt road, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC148125  Rosa gymnocarpa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CHSC43210  Rosa multiflora L. P. Janeway 1987-5-20 2068 Butte Turnout and seep area on east side of hwy 70 just south of the 'Rock House' and 0.5 mi south of Jarbo Gap. 670 Comment
  RSA718384  Rosa pisocarpa L. Ahart 2006-6-24 12857 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  CHSC113535  Rotala ramosior Lowell Ahart 2014-9-23 19866 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
  CHSC45811  Rubus armeniacus L. P. Janeway 1987-5-7 2023 Butte Table Mtn Rd where it is at the base of the RR fill and overlooking Thermalito Forebay. 91 Comment
  JEPS115598  Rubus discolor Lowell Ahart 2009-5-23 15771 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SEINET10483568  Rubus glaucifolius Mary Susan Taylor 1981-5-11 Taylor 3691 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CHSC29107  Rubus laciniatus M. S. Taylor; J. D. Jokerst 1980-4-27 2556 Butte Along Middle Butte Creek off of Little Butte Creek, ca. 1 1/2 mi se of Ninshew. 609 Comment
  CHSC30697  Rubus parviflorus M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  CHSC52475  Rubus parviflorus L. P. Janeway 1987-5-20 2078 Butte Along Heinz Cr along hwy 70 2.1 mi NE of Pulga bridge. 457 Comment
  JEPS119753  Rubus ursinus Lowell Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, north side of the paved road, Lower Bidwell Park, Chico. Comment
  SEINET10483614  Rubus vitifolius Mary Susan Taylor 1976-3-16 Taylor 1027 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CHSC116231  Rumex acetosella Lowell Ahart 2015-7-4 20293 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 500 yards north of the County Road, about one mile west of the intersection of Lumpkin Riddge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1252 Comment
  CHSC87558  Rumex acetosella R. D. Fischer 2004-4-11 61 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on eastern hillside above the end of 10 Mile House Road just south of B.C.C.E.R. land. 304 Comment
  CHSC116022  Rumex crispus Lowell Ahart 2015-10-20 20574 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
  CAS-BOT-BC421615  Rumex crispus John Thomas Howell 1959-9-20 34621 Butte Eastern outskirts of Oroville 60 Comment
  CHSC33685  Rumex dentatus L. Ahart 1981-5-16 2804 Butte In low places on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CAS-BOT-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  JEPS117514  Rumex pulcher Lowell Ahart 2010-5-22 16717 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
  CHSC51275  Rumex salicifolius var. denticulatus Lowell Ahart 1990-10-3 6619 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC35031  Sagina decumbens subsp. occidentalis R. A. Schlising; J. D. Jokerst 1981-4-15 4031 Butte Southeastern part of county, along Hurleton/Swedes Flat Road, 0.6 mi N of junction with Swedes Flat Road. At roadside. Comment
  RSA173737  Sagina saginoides H. F. Copeland 1927-9-4 947 Butte Jonesville. Comment
  CAS-BOT-BC445664  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC445727  Sagittaria latifolia Herbert L. Mason; Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  UC935789  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  SEINET10938868  Sagittaria sanfordii Mary Susan Taylor 1978-5-7 Taylor 1606 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC103451  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  CAS-BOT-BC107832  Salix gooddingii Gordon H. True 1971-4-8 6455 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  SEINET11991647  Salix gooddingii var. variabilis J. D. Jokerst 1982-1 1543 Butte Grey Lodge Waterfowl Man. Area, along road running N of Rutheford Rd to N Comment
  CHSC32613  Salix laevigata J. D. Jokerst 1979-3-20 1232 Butte Top of North Table Mt., the second drainage N of Cherokee Rd., at the E edge of the mountain center. 396 Comment
  RSA755039  Salix laevigata L. Ahart 2009-5-15 15687 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CHSC108808  Salix lasiolepis Lowell Ahart 2012-4-9 17831 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  HSC104023  Salix lasiolepis L. Ahart 2012-2-22 17750 Butte About 9 air mi. NE of Chico, ~ 5/8 mi. W of Hwy. 32, edges of the pond at the old homestead 259 Comment
  CAS-BOT-BC129624  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36779 Butte Jarbo Gap, Feather River Highway - Sierra Nevada 60 Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  LA208842  Salix ligulifolia E. B. Copeland; 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CHSC46407  Salix lucida subsp. lasiandra Lowell Ahart 1989-5-29 6317 Butte Along the gravel road to the Forbestown Reservoir, about 1 1/2 miles north-east of Forbestown Road, about 3 miles north-east of Forbestown. 792 Comment
  CHSC11989  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville. 1500 Comment
  POM166819  Salix melanopsis E. B. Copeland 1903-7-27 3491 Butte Chico. Butte Creek. 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
  SEINET12320802  Sambucus caerulea Unknown 1974-1 s.n. Butte ca 6mi NE of Chico Municipal Airport on Cohasset Rd 518 Comment
  SEINET10465318  Sambucus mexicana Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4254 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CHSC11858  Sambucus racemosa E. B. Copeland 1930-7-12 480 Butte Above Jonesville. Along north brow of high ridge. 640 Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  JEPS103400  Sanicula Lowell Ahart 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  UC175514  Sanicula bipinnata A. A. Heller 1913-4-5 10707 Butte above Oroville (n side of Feather River); Feather River Comment
  CHSC65442  Sanicula bipinnatifida var. flava L. P. Janeway 1995-6-19 4798 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC96828  Sanicula graveolens Lowell Ahart 2007-5-29 13950 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  POM219522  Sanicula graveolens E. B. Copeland 1931-6-22 s.n. Butte Jonesville, on ridge west of Jones Creek. 2100 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
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
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May 5 2015
  UC875541  Sanicula tuberosa A. A. Heller 1915-4-12 11807 Butte near Cohasset; Sierra foothills Comment
  SEINET10454591  Sanicula tuberosa Mary Susan Taylor 1980-4-18 Taylor 2521 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  CHSC94574  Saponaria officinalis Lowell Ahart 2006-9-11 13337 Butte South side 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
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  POM92827  Saxifraga californica C. C. Bruce 1897-1 2043 Butte Little Chico Comment
  UC600619  Saxifraga odontoloma H. F. Copeland 1932-8-19 Butte se of head of Butte Creek; Jonesville, Butte Creek 2100 Comment
  POM196145  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 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
  CHSC45886  Scandix pecten-veneris Lowell Ahart 1974-4-11 371 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
  CAS-BOT-BC111649  Schoenoplectus mucronatus Lowell Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 15 Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  SEINET4170990  Scirpus congdonii E. B. Copeland 1929-7-19 Butte Jonesville, 1550 Comment
  JEPS98280  Scirpus diffusus Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CDA2625  Scirpus mucronatus Margaret Bellue Aug 1947 Butte Afton Road, near Biggs. 0 Comment
  CDA39136  Scirpus saximontanus G. D. Barbe, T. C. Fuller 1982-6-14 3676 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  SEINET11268263  Scirpus setaceus Lowell Ahart 2000-7-11 8563 Butte About 200 yards southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 6 1/2 miles (air) northeast of Feather Falls.; 0 1280 Comment
  CHSC42735  Scleranthus annuus subsp. annuus Lowell Ahart 1987-5-6 5517 Butte 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-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte Along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam 350 Comment
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  CAS-BOT-BC239962  Scribneria bolanderi Lowell Ahart 1985-5-15 4971 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
  CHSC103745  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  RSA518696  Scrophularia californica subsp. floribunda L. Ahart 1990-10-21 6634 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 0.5 mile west of Gold Flat. 244 Comment
  CHSC52200  Scutellaria californica L. P. Janeway 1988-6-19 2819 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/ firebreak along powerline (3-wire, wooden poles). 274 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CHSC94028  Scutellaria tuberosa R. D. Fischer 2005-4-9 732 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a shady roadside bank, with shrubs and chaparral of ridge top. 487 Comment
  CHSC90984  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  SJSU5138  Sedella pumila C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise, Sierra Nevada foothills 487 Comment
  SEINET8552582  Sedum B. Nightingale 1961-4-29 s.n. Butte Butte Creek, ca 10 miles E of Chico. 61 Comment
  SEINET10449683  Sedum albomarginatum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3418 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  HSC86855  Sedum spathulifolium R. Rembowski 1975-4-15 2 Butte W of Covered Bridge, 8 mi. S of Butte Creek 122 Comment
  CHSC117771  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Hwy 70 at Pulga Bridge. 502 Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  CAS-BOT-BC62114  Selaginella hansenii E. B. Copeland 1899-4-29 s.n. Butte near Chico Comment
  CAS-BOT-BC62121  Selaginella hansenii Lowell Ahart 1979-4-3 s.n. Butte near N Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  HSC72949  Selaginella wallacei M. S. Taylor 1980-9-27 3345 Butte S side of Hwy. 70 at Butte-Plumas Co. line 549 Comment
  SEINET10530445  Selaginella wallacei Mary Susan Taylor 1980-5-27 Taylor 2666 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
  SEINET10872075  Senecio eurycephalus var. lewisrosei Heidi H. Schmidt 1993-6-15 Schmidt 869 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  SEINET10475269  Senecio layneae Lowell Ahart 1985-1 Butte Comment
  CAS-BOT-BC5710  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of the Feather River, 3 mi S of Pulga 609 Comment
  JEPS117292  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  POM219439  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. 1550 Comment
  CHSC41863  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS122186  Senecio vulgaris Lowell Ahart 2014-4-16 19358 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC27181  Sequoiadendron giganteum M. MacArthur 1968-6-17 210 Butte Ca. 30 ft N of Big Chico Creek and 50 ft. from path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  CHSC69442  Sericocarpus oregonensis Lowell Ahart 1997-9-6 7890 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CAS-BOT-BC240124  Setaria pumila Lowell Ahart; Margit Epperson 1982-8-22 3749 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut 50 Comment
  CHSC47639  Setaria pumila Lowell Ahart 1977-8-14 1550 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  SD111906  Sherardia arvensis Barbara Ertter, Jeff Strachan 1980-5-5 3261 Butte Peter Ahart Ranch ca 1I(c) mi northeast of Honcut between Oroville and Marysville, pasture north of house, wet clay bank of ditch 29 Comment
  JEPS103541  Sibara virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the N side of Gridley Road, ca 5 miles W of Gridley. 21 Comment
  CHSC29977  Sidalcea asprella Lowell Ahart 1980-5-17 q 2300 Butte About .5 mi SE of Hurleton, slightly E of Oak Grove Cemetery. 600 Comment
  CHSC71181  Sidalcea calycosa subsp. calycosa Lowell Ahart 1998-6-3 7964 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC107239  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
  CHSC96335  Sidalcea gigantea L. P. Janeway 2006-8-12 8838 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  JEPS97942  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  UC1755046  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  UC478500  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville 1550 Comment
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29407  Sidalcea hartwegii R. A. Schlising; R. Banchero 1980-6-2 3615 Butte Along Hwy 32, 6.4 mi S of center of Forest Ranch. Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 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
  CHSC38552  Sidalcea hirsuta Vernon Oswald 1983-5-22 527 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. and 50 ft e of the road to the North Rim Trail. 91 Comment
  CHSC44085  Sidalcea hirsuta John E. Hunter 1986-3-31 42 Butte Vacant lot within City of Chico, ca. 75 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  RSA87488  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 s.n. Butte Oroville-Forbestown Rd, 6 miles W. of Forbestown. Comment
  RSA739637  Sidalcea malviflora subsp. celata B. Castro, David Toren 2005-7-21 1520 Butte 9 air miles NE of Paradise, 2.5 miles NE of Flea Mtn, at the crossing of Lockerman Creek by USFS road 24N13. 951 Comment
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Aug 6 2019
  CAS-BOT-BC205759  Sidalcea oregana Sally Bianco 1995-10-19 1044 Butte E side of Concow Rd. approx. 0.8 km S of Hoffman Rd. on south side of creek 760 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  SEINET10937545  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1412 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
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  JEPS98430  Silene antirrhina Lowell Ahart 2000-5-31 8425 Butte 3 mi SE of Paradise (below the high water line of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 271 Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC389007  Silene laciniata subsp. californica Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC389010  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC24673  Silene laciniata subsp. californica S. Deaton 1976-4-14 17 Butte Ca. 2 1/2 mi n of Feather Falls parking lot, 15 ft off nw side of Falls trail. 853 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CHSC82633  Silene laciniata subsp. californica Tara Morgan 2002-4-23 31 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail. On the side of the trail. 414 Comment
  CHSC9280  Silene laciniata subsp. californica D. C. Burns 1971-4-2 109 Butte On n side of Cohasset rd. ca. 1.5 mi w of the intersection of Cohasset rd. and Vilas rd. 487 Comment
  UC600625  Silene lemmonii E. B. Copeland 1930-7-28 Butte Jonesville Comment
  SEINET13095564  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC38044  Sinapis arvensis R. E. Preston 1983-1-9 374 Butte At roadside; on w side of Nelson Rd, 100 ft e of RR crossing, Nelson. 36 Comment
  CHSC4649  Sinapis arvensis R. Carter 1966-4-2 323 Butte Found ca. 7 mi. E of Oroville e at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC3517  Sisyrinchium bellum John Francis 1966-4-16 108 Butte 3.7 miles E. of covered bridge (Honey Run). Comment
  RSA4634  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville 1500 Comment
  CDA18814  Solanum elaeagnifolium K. Ewing 1999-8-31 PDR 1174282 Butte Corner of Centennial and Manzanita Ave., Chico. 0 Comment
  CHSC77027  Solanum elaeagnifolium David Scofield Wilson 1996-10-8 Butte In the city of Chico: roadside at the southwest corner of Manzanita Avenue and Centennial Avenue. 82 Comment
  CHSC62626  Solanum rostratum Patrick E. Kelly 1994-2-10 Butte N side of Doe Mill Rd. just E of Butte Creek Diversion in S Chico. 83 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-BC365377  Solidago elongata H. F. Copeland 1920-8-12 125 Butte In Jonesville Meadow 1219 Comment
  UC1999867  Solidago elongata J. C. Semple, S. Heard 1986-8-14 8432 Butte Jonesville, banks of Butte Creek, by road to Butte Meadows. Comment
  CHSC26703  Solidago velutina subsp. californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1455 Butte On both sides of Hwy 32, ca. 6 mi s of Forest Ranch. 609 Comment
  CHSC31610  Solidago velutina subsp. californica L. Ahart 1978-8-30 1800 Butte On banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC365838  Soliva sessilis Lowell Ahart 1989-5-23 6246 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC102998  Sonchus asper subsp. asper Lowell Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  UCD136130  Sonchus asper subsp. asper E. M. Johnston 1915-1 W- 139 J Butte Biggs. Comment
  CHSC103987  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 260 Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  SEINET10933086  Sparganium emersum var. multipedunculatum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4195 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC20120  Spartium junceum M. S. Taylor 1975-4-26 524 Butte Scattered on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC3747  Spartium junceum R. L. Adams 1964-4-14 57 Butte Elliot Road 1/2 mile from Skyway on E, side of road, Paradise. Comment
  SEINET7420479  Spartium junceum M. J. Williams, W. Roderick 1984-5-25 84- 22 -2 Butte Magalia, near Skyline road to Paradise. 168 Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC84019  Spergula arvensis subsp. arvensis Lowell Ahart 2003-6-23 10307 Butte In a grain field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS114737  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
  UCD99249  Spergularia marina P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  JEPS108927  Spergularia rubra Lowell Ahart 2005-12-11 12512 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC52700  Spiraea cantoniensis L. P. Janeway; B. Castro 1990-3-24 3657 Butte Campus of California State University, Chico. Near Big Chico Creek along path from Holt Hall to the bridge to Sylvester's Cafe-by-the-Creek. 57 Comment
  CHSC71204  Spiranthes porrifolia Lowell Ahart 1998-6-9 8000 Butte Northwest of th cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS98321  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte 5 air miles E of Oroville Dam (old gold mining pit SE of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  RSA700390  Spiranthes romanzoffiana Lowell A. Ahart 2004-8-2 11325 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC85751  Stachys ajugoides var. ajugoides G. F. Hrusa; T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada--Plumas National Forest. Approx. 0.4 m. E of bridge over Marble Creek on USFS N60. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CHSC42983  Stachys ajugoides var. rigida L. P. Janeway 1987-6-13 2202 Butte SE side of Concow Rd at Flea Valley, along Flea Valley Cr. 1127 Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC84885  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 2 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
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  CHSC42938  Stachys pycnantha Lowell Ahart 1987-7-8 5791 Butte Along Walker Plains Road, about 1/2 mile east of Highway 70, near Pulga. 457 Comment
  UC1563286  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mi northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC52208  Stachys stricta L. P. Janeway 1988-6-29 2900 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  CHSC45266  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow. On the bed of the creek. 1889 Comment
  CHSC58902  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CAS-BOT-BC391086  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CHSC26467  Stellaria media P. Moyer 1972-3-4 113 Butte CSUC Campus. 2nd and Ivy to 2nd and Cherry. 60 Comment
  CHSC90186  Stellaria media Robert Kissane 1989-4-18 7 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  UCD99392  Stellaria media A. A. Heller 1914-3-28 11242 Butte in gardens and lawns at Chico and in cultivated fields in the Sacramento valley. Comment
  JEPS87499  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CHSC72744  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
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  SEINET10606024  Stipa columbiana Mary Susan Taylor 1982-5-2 Taylor 4395 Butte T23N R5E ne 1/4 ne 1/4 sec 6. Pulga SW quad. Pulga serpentine area on n side of Hwy 70 at Pulga bridge, ca. 20 mi. ne of Oroville.With Silene gallica, Claytonia parviflora, Potentilla glandulosa. 488 Comment
  SEINET10508401  Stipa pulchra Lowell Ahart 1983-6-15 Ahart 4055 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  UC1292726  Streptanthus diversifolius Freed W. Hoffman 1951-8-1 3828 Butte 6.2 mi N of Oroville-Chico Hwy on the road to Cherokee Table Mountain Comment
  CAS-BOT-BC87386  Streptanthus longisiliquus Lowell Ahart 1983-9-17 4434 Butte Sierra Nevada. About 2.5 miles south of Stirling City. 1100 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  CHSC39047  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte About 3 miles SW of Butte Meadows, along Humboldt Road.; at edge of road. 1450 Comment
  CHSC33179  Streptanthus polygaloides R. E. Preston 1981-6-2 76 Butte Ca. 100 m n of Bardee's Bar Rd., ca. 0.8 km from its jct with Big Bend Rd., ca. 24 km nne of Oroville. 670 Comment
  JEPS108792  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  HSC32398  Streptanthus tortuosus Kitsy Kelly 1974-4-20 28 Butte Table Mtn. Volcanic area Comment
  CHSC4161  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-11 338 Butte Found ca. 1/8 mi. E of Bidwel Bar along N side of R.R. tracks; on cliff above. 152 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC64153  Streptopus amplexifolius var. americanus Hal Durio 1994-7-7 Butte Plumas Nat. Forest. Old placer mining location. Flat along Pinkard Ck., 1 1/4 mile north of Lost Ck. Res., 1 mile west of Sly Ck. Reservoir. East of USFS Road 22N24. 1097 Comment
  CHSC46414  Styrax officinalis var. redivivus Lowell Ahart 1989-5-29 6309 Butte Growing on dry red rocky soil along the edge of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 822 Comment
  UCD119111  Styrax redivivus W. R. Powell 1968-5-16 1502 Butte 3/4 mile northeast of Lake Wyandotte. 457 Comment
  SEINET10479043  Suaeda torreyana Lowell Ahart 1983-9-19 Ahart 4452 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  SEINET10872936  Symphoricarpos acutus Lowell Ahart, L. Hanson 1985-5-20 Ahart 5026 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  JEPS123968  Symphoricarpos mollis Lowell Ahart 2015-7-4 20270 Butte About 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  CHSC30396  Symphyotrichum ascendens Diane H. Ikeda 1979-9-2 159 Butte On Humboldt Rd. at Butte Crk., 5.3 mi NE of the junction of Hwy 32 and Humboldt Rd. 1341 Comment
  CHSC36839  Symphyotrichum ascendens M. S. Taylor 1978-9-9 1911 Butte On W side of Bull Run Rd, ca. 10 mi S of Butte Meadows. 1463 Comment
  JEPS115642  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
  CHSC34784  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Ca 150 m W of the dam at Wyandotte Lake, ca 8 mi W of Oroville. 450 Comment
  SD112376  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2983 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  SD50981  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2987 Butte North fork of Feather River, 28 miles from Oroville. Comment
  CHSC63806  Symphyotrichum spathulatum S. C. Morey 1983-8-1 662 Butte Chico Meadows. On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC105795  Symphyotrichum spathulatum var. 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
  JEPS115638  Symphyotrichum subspicatum Lowell Ahart 2009-8-23 16294 Butte Near small drainages, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS124323  Symphyotrichum subulatum var. elongatum Lowell Ahart 2015-10-20 20572 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC98373  Symphyotrichum subulatum var. parviflorum Forman T. McLean 1921-9-29 22 Butte Rice fields at Chico. Comment
  CAS-BOT-BC376823  Tanacetum vulgare Lowell Ahart 1988-9-4 6172 Butte Along both sides of the Skyway, south end of Stirling [Stirling] City 1075 Comment
  SEINET10454615  Tauschia kelloggii Mary Susan Taylor 1980-5-8 Taylor 2604 Butte T24N R3E e half nw sec 33. Paradise qu