Search Results — 2000 specimen records retrieved (1605 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC1769  Abronia latifolia R. Morford 1931-4-30 Butte Salmon Hole, Chico Creek. 152 Comment
  RSA0025840  Abronia turbinata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SEINET3449383  Acacia dealbata Unknown 2003-4-30 10118 Butte Palermo, Palermo, about 2 air miles northeast 60 Comment
  UCD117057  Acer macrophyllum Johann Watjen 1969-5-4 36 Butte confluence of Rock Creek and Feather River North Fork, Feather River Canyon. 457 Comment
  CHSC65680  Acer negundo var. californicum Vernon H. Oswald 1996-3-22 7252 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, SW corner of Tract 2, on the edge of a branch of Angel Slough. 30 Comment
  CDA43099  Acer saccharinum L. P. Janeway 2013-2-25 11084 Butte Sacramento Valley.; North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. Comment
  CHSC80585  Achillea millefolium Lowell Ahart 2001-6-13 8818 Butte Center of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC95214  Achillea millefolium R. D. Fischer 2004-5-2 801 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Guardian Trail between the Pine and Bloodypin Trails. 335 Comment
  CHSC42447  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC6754  Achnatherum lemmonii Marilyn Lee 1968-5-3 160 Butte South side of Coutolenc Rd., ca 1 mile N. of Magalia. Comment
  UC1133083  Achnatherum occidentale subsp. californicum P. L. Johannsen 1936-7-17 938 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  UC1499971  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte 1 1/2 mi se Stirling City 1100 Comment
  CHSC28137  Achyrachaena mollis J. D. Jokerst 1979-5-6 216 Butte N of Rock Creek, 300 m. n of intersection Rock Creek Road and Cohasset Hwy. 106 Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CHSC10653  Acmispon americanus var. americanus Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC872  Acmispon americanus var. americanus D. Crummett 1937-5-27 Butte Paradise Road. 396 Comment
  CHSC50668  Acmispon glaber Lowell Ahart 1990-5-21 6474 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  UCD104256  Acmispon nevadensis var. nevadensis A. A. Heller 1917-7-26 12828 Butte Butte Meadows. 1402 Comment
  CHSC26729  Acmispon wrangelianus M. S. Taylor; M. Hayes 1978-4-14 1557 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC31394  Acmispon wrangelianus J. D. Jokerst 1979-4-13 1191 Butte Top of North Table Mt., N of Cherokee Rd ca. 150 met. 396 Comment
  CAS-BOT-BC391377  Aconitum columbianum subsp. columbianum H. F. Copeland 1920-8-12 127 Butte Beside Butte Creek 1676 Comment
  CHSC45234  Aconitum columbianum var. columbianum Kirsten Tarp 1981-7-28 52 Butte Coon Hollow, ca. 29 air miles ne of Chico. 1731 Comment
  CHSC46835  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 344 Butte Philbrook Reservoir, on edge of meadow. 1706 Comment
  CHSC52678  Aconitum columbianum var. columbianum Kirsten Tarp 1983-7-28 310 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1295 Comment
  CAS-BOT-BC412869  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  HSC66268  Aconogonon davisiae M. S. Taylor 1979-6-21 2156 Butte W side of Humboldt Peak, Humboldt Summit 2155 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CAS-BOT-BC29925  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC23644  Adiantum jordanii M. S. Taylor 1976-4-4 1059 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  CHSC44957  Adiantum jordanii Lance E. Neuman 1987-4-10 19 Butte Ca. 200 yd ne of Horseshoe Lake. 106 Comment
  CHSC90135  Adiantum jordanii Greg Johansen 1983-4-16 1 Butte About 200 yds south of Butte Creek and 200 yds southeast of the Covered Bridge, 6 mi east-southeast of Chico. 274 Comment
  SEINET10867068  Adiantum jordanii Mary Susan Taylor 1979-3-20 Taylor 1942 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET11716733  Adiantum jordanii B. K. Madsen 1970-1 22 Butte S side of Chico Canyon Rd, ca 300 yards S of Municipal Golf Course bdg across Big Chico Creek, Chico Comment
  CDA42880  Aegilops triuncialis L. Ahart 2012-5-2 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CAS-BOT-BC202595  Aesculus californica Lowell Ahart 1979-6-2 s.n. Butte On N. Honcut Creek bank. Peter Ahart Ranch. Honcut 50 Comment
  CHSC40341  Aesculus californica Lowell Ahart 1985-6-17 5045 Butte On dry bare dark lava, near the dirt road on Fields Ridge, about 4 miles southeast of Feather Falls. 762 Comment
  UC175551  Aesculus californica A. A. Heller 1913-5-25 10756 Butte near Pents <Pentz> 152 Comment
  SEINET12290260  Agastache parvifolia Unknown 1967-1 584 Butte Chico, on the Rd to Eagle Lake Biology Station and Willow Creek 1585 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CAS-BOT-BC29614  Agoseris grandiflora var. grandiflora Helen M. Edwards 1917-6-16 s.n. Butte De Sabla Comment
  CHSC8144  Agoseris heterophylla J. G. Moore 1969-4-13 76 Butte Pentz Rd., 200 yds. E of Hwy. 99, on S side of road. 60 Comment
  CDA14067  Agoseris retrorsa G. F. Hrusa, T. D. Wilfred 1997-5-1 13715 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC42473  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  POM32928  Agoseris retrorsa C. C. Bruce 1897-04 s.n. Butte Cherokee grade. Comment
  SEINET10506829  Agropyron Mary Susan Taylor 1981-5-22 Taylor 3794 A Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 Comment
  CHSC39999  Agropyron desertorum M. S. Taylor 1982-6-24 4733 Butte SE of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CAS-BOT-BC127332  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  SEINET10789948  Agrostis exarata Lowell Ahart 1988-7-24 Ahart 6127 Butte Spike Bentgrass. On dry soil, silt bar on the bottom of a deep ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west oof Robinson Mill Road, Butte County, California. 732 Comment
  CHSC103156  Agrostis gigantea Lowell Ahart 2009-7-9 16006 Butte On the east side of a 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
  CHSC30292  Agrostis hendersonii M. S. Taylor 1980-5-27 2692 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC40448  Agrostis hendersonii Lowell Ahart 1985-5-22 5029 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  POM183177  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  RSA591515  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  CHSC102963  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC138772  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  UCD53338  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  CHSC43175  Agrostis variabilis Robert Banchero 1981-7-18 600 Butte Butte Creek House, ca 3 air miles ne of Jonesville. 1755 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  RSA695407  Alisma lanceolatum Lowell Ahart 2003-6-23 10303 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC31017  Alisma triviale M. S. Taylor; J. D. Jokerst 1979-11-11 2285 Butte Comment
  JEPS120839  Alisma triviale Lowell Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CAS-BOT-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  CHSC27792  Allium amplectens Rod Bunday 1978-4-25 16 Butte Ca. 200 ft w of Cohasset Rd ca. 12 mi ne of East Ave. between Chico and Cohasset. 304 Comment
  CHSC40626  Allium amplectens J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1960 Butte N of Kunkle Reservoir ca 200 m sw of Lago Vista Rd. Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  POM110215  Allium amplectens C. C. Bruce 1897-03 1898 Butte [No locality information provided] Comment
  CHSC36903  Allium campanulatum R. A. Schlising; R. Banchero 1980-7-11 3885 Butte NE part of county at s ecd of Walker Plains; along Oroville-Quincy Hwy. 1536 Comment
  SEINET10938260  Allium campanulatum Mary Susan Taylor 1979-7-21 Taylor 2153 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC40617  Allium cratericola Ahart; Jokerst 1985-3-24 4863 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
  CAS-BOT-BC466714  Allium cratericola Gladys L. Smith 1973-1-1 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 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
  CHSC29962  Allium membranaceum R. A. Schlising; P. Broyles 1979-5-15 3407 Butte NE of Magalia and NW of Sawmill Peak. Comment
  CHSC36951  Allium peninsulare Richard J. Slama 1981-4-20 7 Butte On s rim of canyon, ca. 7 mi. se of Chico, ca. 5 mi. e of hwy. 99 on Skyway rd. 243 Comment
  SEINET10471990  Allium peninsulare Lowell Ahart 1985-5-15 Ahart 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET12048118  Allium sanbornii M. Ownbey, Ownbey, G. B. 1946-1 2948 Butte Hwy. 24, 21 mi NE of Oroville, just beyond Yankee Hill Rd Comment
  CAS-BOT-BC476716  Allium validum Vernon Oswald; Lowell Ahart 1987-1-7 3046 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC27033  Allophyllum divaricatum Robert A. Schlising 1978-6-11 3291 Butte Along Cohasset Rd, below Cohasset, 5.5 mi NE of crossing of Mud Cr and 5.3 mi NE jct of rd to Richardson's Springs; ridge top. Comment
  SEINET12328367  Allophyllum divaricatum L. Ahart, Ahart, P. 1983-1 4258 Butte ca 3 mi E of Milsap Bar, ca 25 mi NE of Oroville 1100 Comment
  CHSC102996  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  CAS-BOT-BC137935  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  CHSC116741  Alopecurus saccatus Lowell Ahart 2016-5-17 10837 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  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
  UCD169922  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte North Table Mountian, about 1/4 mile south of the parking area. About 4 1/2 miles (air) northeast of Oroville. 371 Comment
  JEPS124125  Amaranthus albus Lowell Ahart 2015-10-9 20540 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  SEINET10478740  Amaranthus albus Mary Susan Taylor 1978-9-8 Taylor 1888 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET10478812  Amaranthus blitoides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5159 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  UC1562281  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  CHSC92456  Amaranthus retroflexus Lowell Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC76263  Amaranthus rudis Lowell Ahart 1999-9-21 8266 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC100492  Ambrosia psilostachya Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC51268  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte Growing below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CAS-BOT-BC213950  Amsinckia John Thomas Howell 1976-4-2 51552 Butte About 2 miles southeast of Chico 60 Comment
  NY622100  Amsinckia congruens A. A. Heller 1918-3-30 12981 Butte 8 miles North of Oroville Comment
  JEPS34382  Amsinckia eastwoodiae Rimo Bacigalupi and L. Heckard 1963-5-14 8858 Butte Along Paradise Skyway, 0.5 mile west of junction with the Humbug Road (just SE of Chico). Comment
  RSA0090927  Amsinckia intermedia var. eastwoodiae C. C. Bruce 1897-05 1926 Butte [No locality information provided] Comment
  CHSC71188  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte North Table Mountain, about 7 miles (air) north of Oroville. Margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road. 403 Comment
  JEPS127066  Anagallis minima Lowell Ahart 2016-5-15 20832 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  JEPS95957  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico: T21N R2E SE1/4 NW1/4 Sect. 5, 230 ft, agricultural area. Localized weed growing in the NE corner of the intersection of farm roads directly S of the headquarters building. 70 Comment
  CAS-BOT-BC137801  Andropogon virginicus var. virginicus Lowell Ahart 1987-10-22 5926 Butte About 0.5 mile west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles southwest of Oroville. 38 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
  CHSC42570  Angelica californica Vernon Oswald 1985-6-6 1813 Butte Near Centerville Flume 0.5 mi downstream from its crossing on Humbug Rd. 341 Comment
  CHSC106604  Anthriscus caucalis L. P. Janeway 2011-4-13 10231 Butte Sacramento Valley. Oroville; just west of Centennial Park, along the bicycle path on the north slope of the levee on the south side of Feather River. 49 Comment
  JEPS107279  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 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
  CHSC38682  Antirrhinum cornutum Vernon Oswald 1983-7-3 803 Butte Upper Bidwell Park, Chico, on the rim overlooking Sycamore Creek Canyon ca. 200 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC34076  Aphyllon epigalium subsp. epigalium M. S. Taylor 1981-5-29 3814 Butte Chico Ridge, ca. 0.5 mi n of 22N31, ca. 3 air mi se of Pulga. 853 Comment
  CHSC32828  Arbutus menziesii W. Michael Foster 1981-4-24 10 Butte Along both sides of Hwy 70, ca. 2 mi NW of Jarbo Gap and ca. 20 mi N of Oroville. 609 Comment
  CHSC102006  Arceuthobium abietinum L. P. Janeway; David Toren 2009-9-15 9953 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Wildcat Creek and Bear Ranch Creek, 3.6 air km north of Road 23N31. 1419 Comment
  SEINET10837606  Arceuthobium abietinum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC46568  Arceuthobium americanum Vernon H. Oswald 1989-7-4 3839 Butte Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CAS-BOT-BC407686  Arceuthobium americanum Vernon Oswald; Lowell Ahart 1987-7-1 3077 Butte Cluster of 3 snow lakes ca. 3 mi. S of Humbug Summit, 0.5 miles W of the Butte-Plumas county line, ca. 5.5 mi. SE of Jonesville 1935 Comment
  SEINET10492818  Arceuthobium americanum Mary Susan Taylor 1976-5-3 Taylor 1104 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  RSA325115  Arceuthobium campylopodum M. S. Taylor 1975-9-19 911 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  CHSC35692  Arceuthobium occidentale J. D. Jokerst 1982-4-2 1515 Butte North Table Mountain. West edge of mountain, N of Cherokee Road in draw of open grasslands. 381 Comment
  RSA632994  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27466 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632999  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27477 Butte Cohasset. 630 Comment
  RSA633012  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CHSC31680  Arctostaphylos manzanita subsp. manzanita L. Ahart 1974-2-12 296 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3616  Arctostaphylos manzanita subsp. manzanita John Francis 1966-2-15 9 Butte 4 miles E of Chico on Hwy 32. Comment
  CAS-BOT-BC24297  Arctostaphylos mewukka A. A. Heller 1928-2-27 14478 Butte About 2 mi. w. of Forest Ranch. Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  SJSU9930  Arctostaphylos mewukka G. L. Baker 1968-5-5 72 Butte Paradise 609 Comment
  SEINET10973496  Arctostaphylos mewukka Mary Susan Taylor 1975-9-12 Taylor 910 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  SBBG50284  Arctostaphylos mewukka subsp. truei G. L. Smith 1975-4-9 Butte Magalia Comment
  SEINET5539344  Arctostaphylos patula H. S. Gentry, S. Koch 1962-1 19765 Butte 3-4 mi. NW of Cohasset. 1066 Comment
  SEINET10973497  Arctostaphylos patula Mary Susan Taylor 1974-5-20 Taylor 255 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  UCD52616  Arctostaphylos viscida John Thomas Howell 1975-6-15 51101 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC47368  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC47378  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51098 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48290  Arctostaphylos viscida subsp. viscida John Thomas Howell 1955-6-15 30489 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC109106  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  UC1121414  Arctostaphylos viscida subsp. viscida J. E. Sowder and C. G. Albertus 1933-7-14 116 Butte 3/10 mi n Forest Ranch P.O.; Chico Quadrangle Comment
  UC195408  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  SEINET10790613  Aristida oligantha Lowell Ahart 2006-10-13 Ahart 13504 Butte T17N, R4E, southwest 1/4 Section 3. Small size plants, on dry gravelly soil, on the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  UC203846  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte uplands between Pentz and Dry Creek Comment
  SEINET10507253  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CAS-BOT-BC400419  Aristolochia californica Carl B. Wolf 1937-3-29 8328 Butte Sacramento Valley, 2 mi. So. of Chico 57 Comment
  HSC85969  Aristolochia californica J. Hunter 1986-2-27 16 Butte 2 km E Chico, 15 m S Chico Creek 70 Comment
  UC398949  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CAS-BOT-BC82412  Arnica discoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC90283  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte Chico, on Big Chico Creek Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 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-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  UCD129281  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch. Comment
  CAS-BOT-BC400641  Asarum hartwegii Mrs. H. C. Cantelow 1939-5-19 2435 Butte 2.3 mi. e. of Brush Creek Ranger Station Comment
  JEPS108150  Asarum lemmonii L. P. Janeway, David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump 1134 Comment
  CHSC4693  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
  CHSC66660  Asclepias fascicularis Vernon H. Oswald; Lowell Ahart 1996-7-22 8088 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  CAS-BOT-BC65916  Aspidotis densa John Thomas Howell 1967-6-22 42612 Butte Magalia 701 Comment
  CAS-BOT-BC65918  Aspidotis densa Lowell Ahart 1984-7-19 4736 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile from Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  SEINET10475334  Aster breweri Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4212 Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  CHSC44850  Aster radulinus Lowell Ahart 1975-9-4 975 Butte About 1 mile northwest of the Golden Trout Crossing on the South Fork of the Feather River. 762 Comment
  CAS-BOT-BC178469  Astragalus gambelianus John Thomas Howell 1962-6-16 37553 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC69540  Athyrium alpestre subsp. americanum V. Oswald; L. Ahart 1988-7-29 3651 Butte Ca. 5 mi. (air) se. of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CAS-BOT-BC68687  Athyrium filix-femina var. californicum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. Comment
  CHSC4115  Athysanus pusillus R. Carter 1966-3-13 297 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd. in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CHSC90603  Athysanus pusillus Susan E. Bigbee 1984-3-13 38 Butte Population ca. 50 yds s of Butte Creek and ca. 320 yds w of Covered Bridge, 6.2 mi ese of Chico. 120 Comment
  UC855593  Athysanus pusillus A. A. Heller 1915-2-26 17765 Butte 6 mi e of Chico (near Hog Springs) Comment
  CHSC46866  Atriplex argentea var. mohavensis Vernon Oswald 1989-9-6 3982 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.9 mi w of Pennington Rd. 19 Comment
  UC1586519  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte about 10 mi se Gridley (on n side of Rutherford Road, about .12 mi w of Pennington Road, w of Parking Area, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area 30 Comment
  CHSC37077  Atriplex heterosperma L. Ahart 1982-9-9 3766 Butte On sides of deep ditch, near water line on bare soil, ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  SEINET10479106  Atriplex heterosperma Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5152 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10904484  Atriplex lentiformis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5155 A Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS116047  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  SEINET10517553  Avena barbata Mary Susan Taylor 1980-3-1 Taylor 2327 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 250 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC108318  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  JEPS118096  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  CAS-BOT-BC98759  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Growing on dry dark soil along the edge of a small wash - Palermo 100 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  UCD129435  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte Gray Lodge, south-west of Gridley. 35 Comment
  HSC96987  Baccharis pilularis subsp. pilularis R. D. Fischer 2003-11-30 17 Butte Sierra Nevada Foothills between Chico and Paradise in the Butte Creek Canyon. Edge of the Centerville Rd. 3.9 mi. N of the Honey Run Rd. and Centerville Rd. junction, 0.1 mi. N of Center Gap Rd. 183 Comment
  CAS-BOT-BC98186  Baccharis salicifolia Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC113982  Bacopa rotundifolia Lowell Ahart 2014-10-14 19882 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  JEPS118614  Bellis perennis L. P. Janeway 2011-6-2 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. Chico 7.5; quad. Comment
  CHSC28538  Berberis aquifolium var. dictyota M. S. Taylor; J. D. Jokerst 1979-10-13 2247 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) near bridge over creek, ca. 1 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CAS-BOT-BC75547  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CHSC113531  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CDA38795  Blennosperma nanum var. nanum L. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  CAS-BOT-BC100690  Blennosperma nanum var. nanum A. A. Heller 1914-2-16 11180 Butte Hills twelve miles from Chico on the Chico - Oroville Road Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  SEINET10453127  Boisduvalia densiflora Mary Susan Taylor 1978-7-18 Taylor 1687 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  RSA34062  Boisduvalia stricta A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  POM46122  Boisduvalia stricta C. C. Bruce 1897-06 2000 Butte [Unspecified] Comment
  CHSC46319  Bolboschoenus maritimus subsp. paludosus Vernon Oswald 1989-6-6 3798 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Field on the n side of Cutte Creek, s of the road leading to ranch headquarters. 19 Comment
  UC600575  Botrychium H. F. Copeland 1932-7-14 Butte Jonesville, below cabin Comment
  CHSC88175  Botrychium minganense Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1554 Comment
  UC1751221  Botrychium minganense Timothy B. Devine 1985-7-7 846 a Butte 2/3 mi NW of Jonesville (beside Willow Creek, about 1/4 mi N of jct with road to Colby Mountain Lookout) 1524 Comment
  JEPS117722  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CHSC61333  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte On a steep bank along Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC33168  Brassica nigra R. E. Preston 1981-5-27 71 Butte Roadside, on n side of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  UCD114731  Brassica nigra L. Ahart 1982-5-29 3449 Butte N of Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Comment
  CHSC31443  Brickellia californica Lowell Ahart 1980-9-10 2631 Butte Ca. 1 mi NE of Millsap Bar, ca 25 mi NE of Oroville. 900 Comment
  CHSC37650  Brickellia californica T. B. Devine 1981-8-25 752 Butte Plumas National Forest, along Hwy 70, ca. 2 1/2 mi SE of Pulga. 594 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  SEINET10507327  Briza maxima Mary Susan Taylor 1980-5-24 Taylor 2745 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC145540  Briza minor Lowell Ahart 1979-5-11 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  SEINET201433  Brodiaea californica Rimo Bacigalupi, G. Bacigalupi; Heckard Sanderson 1952-6-20 3752 Butte Along road from Oroville to Forbestown 1.2 miles west of Hurleton 442 Comment
  CAS-BOT-BC482208  Brodiaea californica subsp. californica Peter H. Raven 1953-5-9 5421 Butte Dry fields 7 mi. s.e. of Chico on Oroville Road Comment
  JEPS5692  Brodiaea californica var. californica W. L. Jepson 1934-5-4 16615 Butte 2 1/2 mi ne Cana Comment
  JEPS50771  Brodiaea elegans subsp. elegans Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9290 Butte about 1 mi n of beginning of grade on Feather River Highway (just e of Messilla Valley) 304 Comment
  CAS-BOT-BC482195  Brodiaea elegans subsp. elegans Lowell Ahart 1977-6-13 s.n. Butte Along banks of North Honcut Creek, Peter Ahart Ranch, Honcut 50 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
  JEPS107547  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  JEPS7701  Brodiaea minor W. L. Jepson 1934-5-4 16622 Butte 2.5 mi ne Cana Comment
  UC203651  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Butte Meadows Sierra Nevada, Butte Meadows 1219 Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  SEINET10866714  Brodiaea minor A. Arthur Heller 1927-5-3 Heller 14364 Butte Stiff clay soil 10 miles north of Chico in a treeless region. The type was collected near Chico. Comment
  SEINET10534140  Brodiaea purdyi Mrs. R. M. Austin 1896-1 Austin 816 Butte Mesa-east of Chico Comment
  CHSC89881  Brodiaea sierrae L. P. Janeway; B. Castro 2004-6-13 8132 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  CAS-BOT-BC486485  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  JEPS103478  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the S side of Central House Road, ca 80 yards E of the bridge across Whyman Ravine, ca 1/4 mile E of Highway 70, ca 12 miles SW of Oroville. 27 Comment
  CAS-BOT-BC149548  Bromus carinatus var. carinatus John Thomas Howell 1967-6-22 42629 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC82470  Bromus carinatus var. carinatus Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9736 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  RSA703217  Bromus catharticus L. Ahart 2004-8-20 11399 Butte On the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Grudley. In walnut orchard. 28 Comment
  CHSC2131  Bromus hordeaceus M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC75424  Bromus hordeaceus Jennifer Slater 1997-4-6 11 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  SEINET10565911  Bromus japonicus Lowell Ahart, John Dittes; Josephine Guardino; Steve Green 2003-5-27 Ahart 10222 Butte T22N R2E, section not surveyed. Normal size plants, on damp dark soil, springy area about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Chico. Common, inconspicuous. Foothill Woodland. 122 Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CAS-BOT-BC162467  Bromus laevipes Lowell Ahart 1982-9-13 3806 Butte Sierra Nevada. Along the edges of a small wash that flows into Pinkard Creek, ca. 1/8 mile north of the Lost Creek Res. Dam, ca. 2.15 miles northwest of Strawberry Balley. 1100 Comment
  CHSC102791  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC95228  Bromus laevipes L. P. Janeway 2006-8-6 8829 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  CAS-BOT-BC162361  Bromus madritensis Lowell Ahart 1980-8-2 2522 Butte Humboldt Peak. 2300 Comment
  SEINET10507667  Bromus madritensis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4078 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC162206  Bromus orcuttianus Lowell Ahart 1987-7-8 5796 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, soutehast of Pulga. 1280 Comment
  CHSC38065  Bromus orcuttianus R. E. Preston 1982-6-23 310 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  UCD59073  Bromus orcuttianus H. F. Copeland 1930-7-21 s.n. Butte Jonesville. By Butte Creek. 1524 Comment
  UCD80527  Bromus rubens CNPS SN Foothill Team 2005-5-6 SNFN 0160 a Butte City of Chico, Upper Bidwell Park, on the northwest side of Upper Park Road, directly across from parking area 'M. 149 Comment
  SEINET11683502  Bromus rubens Unknown 1969-1 268 Butte just E of trail to Salmon Hole in Upper Bidwell Park (E of Chico) 61 Comment
  CHSC49521  Bromus sterilis Vernon Oswald 1987-5-6 2375 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  JEPS97432  Bromus sterilis Lowell Ahart 1995-5-30 7576 Butte 7 mi N of Oroville (North Table Mountain, about 1/8 mi N of Cherokee Road) 335 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CAS-BOT-BC161501  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of Feather River near Stirling. Comment
  JEPS120094  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  SEINET10901259  Bromus tectorum A. Arthur Heller 1919-5-17 Heller 13163 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt, the common shrubs Ceanothus nevadensis, Amelanchier, Salix, and Ribes. Comment
  RSA718082  Bromus vulgaris L. Ahart 2006-7-16 12975 Butte about 220 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. West edge of a large wet meadow and bog, 1570 Comment
  JEPS122141  Bulbostylis capillaris Lowell Ahart 2014-5-2 19426 Butte About one mile (air) northwest of the improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CAS-BOT-BC438355  Calandrinia ciliata H. E. Brown 1897-5-1 158 Butte Near Clear Creek Comment
  JEPS107920  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC23133  Calandrinia ciliata var. menziesii M. S. Taylor 1976-2-12 991 Butte Abundant along roadside, ca. 500 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC25120  Calandrinia ciliata var. menziesii G. G. Poulsen Jr. 1971-4-13 9 Butte Ca 2 mi n. of Oregon City turn off on Cherokee Rd. Grows in clusters in open fields and in shaded areas. 426 Comment
  RSA325177  Callitriche heterophylla M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5403 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC33143  Calochortus luteus J. D. Jokerst 1981-5-14 1324 Butte Top of North Table Mt ca 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  CAS-BOT-BC491858  Calochortus luteus H. C. Cantelow 1940-5-10 s.n. Butte 10miles east of Oroville, Bidwell Bar Bridge Comment
  POM215697  Calochortus luteus D. D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor. Comment
  CAS-BOT-BC492566  Calochortus minimus H. F. Copeland 1931-9-6 1513 Butte Jonesville 1524 Comment
  CHSC32118  Calochortus monophyllus L. Ahart 1970-4-5 42 Butte Along Robinson Mill Rd. 457 Comment
  CHSC90084  Calochortus monophyllus Ross Rowland 2001-3-28 12 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  SEINET12046806  Calochortus monophyllus Unknown 1978-1 34 Butte ca 100 ft from S side of Butte Creek, ca 7 mi E of Chico at Covered Bridge 518 Comment
  UC600461  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville 1524 Comment
  UCD139575  Calochortus superbus D. Finley 1998-5-2 2- 1 Butte 1 road mile north of Wick's Corner, along the east side of interstate 70 north. 91 Comment
  CAS-BOT-BC493341  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC9275  Calochortus tolmiei D. C. Burns 1971-4-4 121 Butte Growing on n side of highway 70, ca. 15 yds up a steep bank, ca. 20 mi n of Oroville on highway 70, (30yds. E of Jarbo Gap Cafe). 710 Comment
  CAS-BOT-BC494320  Calochortus tolmiei C. C., Mrs. Bruce 1897-6-1 2407 Butte Foush Ranch Comment
  HSC23361  Calochortus tolmiei J. V. Serrao II 1971-5-5 160 Butte On N banks of Hwy. 32, 19.4 mi. E of Hwy. 32 and Oroville Rd. intersection 244 Comment
  UCD129684  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico. Comment
  CAS-BOT-BC270001  Calycadenia multiglandulosa Lewis S. Rose 1937-6-10 37358 Butte Hurleton 579 Comment
  CAS-BOT-BC270006  Calycadenia multiglandulosa Lowell Ahart 1983-6-21 4086 Butte Found along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville 450 Comment
  JEPS120843  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  UCR51793  Calycadenia multiglandulosa Lowell Ahart, P. Ahart 1984-6-10 4687 Butte Sierra Nevada Mtns. Foothills, along edge of a new subdivision road 1 mile southeast of Hurleton; 1/12 mile east of Oak Grove Cemetery 500 Comment
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Oct 10 2010
  CAS-BOT-BC106078  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CHSC39657  Calycadenia oppositifolia Lowell Ahart 1983-6-21 4086 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 13. 450 Comment
  RSA255509  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 miles S of Chico Municipal Airport on Cohasset Rd. Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  UC935692  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 mi n of, on Richardson Springs Rd. Chico Comment
  UCD129783  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  CHSC28681  Calycadenia spicata M. S. Taylor 1979-5-6 1998 A Butte Lowell Ahart Ranch, Honcut. 45 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
  CHSC102725  Calycadenia truncata Lowell Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC109849  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC275391  Calycadenia truncata var. truncata Lowell Ahart 1983-6-30 4182 Butte About 1.5 miles NE of Concow Res. 550 Comment
  POM20569  Calycanthus occidentalis Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  UCD166582  Calycanthus occidentalis Dylan O. Burge 2016-8-6 2122 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC14102  Calyptridium monospermum L. V. Ritter 1969-5-20 314 Butte Ca. 3 mi e of Forest Ranch, n side of Hwy 32, ca. 16 mi ne of Chico. Comment
  UC426906  Calyptridium umbellatum E. B. Copeland 1930-7-12 413 A Butte above Jonesville 2000 Comment
  CHSC99549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2008-5-26 9392 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UC843746  Camassia quamash A. A. Heller 1915-6-11 11959 Butte Butte Meadows in the Sierra Nevada Butte Meadows; Sierra Nevada, Butte Meadows 1219 Comment
  CHSC103664  Capsella bursa-pastoris Lowell Ahart 2010-3-5 16570 Butte Parking area, 20 feet south of Sycamore Street (Gridley Colusa Highway), 3 feet east of Virginia Street, in Gridley. 28 Comment
  CHSC486  Capsella bursa-pastoris V. Holt 1935-3-20 Butte Chico. 57 Comment
  UCD114138  Capsella bursa-pastoris Robert Kehlor 1951-4-14 21 Butte Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CAS-BOT-BC37266  Cardamine breweri Lowell Ahart 1977-5-18 s.n. Butte Sutter Buttes Region. Near Golden Trout Crossing, South Fork of the Feather River. 700 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  CAS-BOT-BC37882  Cardamine oligosperma Lowell Ahart 1980-3-26 2062 Butte Near Hurleton. 600 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  CHSC28635  Cardamine oligosperma M. S. Taylor 1979-3-31 1966 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC39070  Cardamine oligosperma R. A. Schlising 1983-3-20 4393 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  SEINET10973517  Cardamine oligosperma Mary Susan Taylor 1980-3-1 Taylor 2342 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
  CHSC70789  Cardamine pachystigma B. Castro 1995-5-18 568 Butte Ca 2 air mi N of Feather Falls, toward western end of Watson Ridge, on S side of USFS Rd 21N25. 15-20 ft S of road edge. 1094 Comment
  RSA769678  Cardaria chalepensis L. Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley. 27 Comment
  CHSC45648  Carduus pycnocephalus Vernon Oswald 1985-5-20 1766 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. On the edge of the road near the creek. 243 Comment
  JEPS117517  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico 71 Comment
  CAS-BOT-BC18210  Carex Lowell Ahart 1988-4-15 5960 Butte In the lawn, Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC76320  Carex amplifolia G. F. Hrusa; T. D. Wilfred 1996-7-9 13138 Butte On bank of Jordan Creek, above waterfall nr. Confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. [Original Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  UC201827  Carex amplifolia H. M. Hall 1914-7-25 9782 Butte Jonesville Sierra Nevada Mountains, Jonesville 1554 Comment
  CAS-BOT-BC17902  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  RSA700399  Carex angustata L. Ahart 2004-8-2 11327 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
  SEINET7550019 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Sycamore Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. Oroville Dam quad 7.5' quad. 274 Comment
  CHSC48078  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-1 2924 Butte Small lake ca 1/2 mi W of Butte Creek House. 1813 Comment
  UC1594681  Carex athrostachya Lowell Ahart 1992-7-21 6805 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  UC600700  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville 1524 Comment
  SD473  Carex aurea E. B. Copeland 1930-6-23 Butte Jonesville; in wet meadows. 1500 Comment
  CAS-BOT-BC19199  Carex barbarae L. P. Janeway 1988-6-25 2853 Butte Along small creek below Hwy 191 (Clark Road), 3.0 miles north of Durham-Pentz Road. 176 Comment
  CHSC102427  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS117694  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  CAS-BOT-BC19417  Carex bolanderi L. P. Janeway 1987-5-20 2076 Butte Along Hwy 70, 2.1 miles NE of the Pulga Bridge, near Heniz Creek. In canyon of North Fork Feather River. 457 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CAS-BOT-BC422329  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1040 Comment
  RSA0010332  Carex cyrtostachya P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CHSC112095  Carex densa Lowell Ahart 2012-5-20 18095 Butte Along a small drainage, about 15 feet east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. 346 Comment
  SEINET8027659 Image available Carex densa L. Janeway, Gog, L 2008-1 3183 (A & B) Butte Bidwell Park. Comment
  HSC103999  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte Chico, one block S of Chico High School, NW of the intersection of W. Frances Willard Ave. and Arcadian Ave. 59 Comment
  UCR7845  Carex dudleyi Marilyn Malin 1968-4-19 245 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  SEINET4286134 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET11310005 Image available Carex fracta Unknown 2009-1 24616 Butte Above Humboldt Road, c. 2 air km S of Humboldt Summit, Cascade Range Highlands (CaRH). Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  JEPS87705  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
  JEPS110319  Carex hoodii Lowell Ahart 2006-7-25 13055 Butte West of the 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
  CHSC52914  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3062 Butte Upper canyon of Philbrook Creek, 0.7 mi W of the pass. 1920 Comment
  CHSC44931  Carex laeviculmis Lowell Ahart 1988-7-31 6154 Butte Road gutter, north of a small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  UC689958  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se Butte Meadows; Paynes Creek Quadrangle 1554 Comment
  JEPS106372  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  JEPS120811  Carex lemmonii Lowell Ahart 2013-5-27 18712 Butte On the E side of Black Bart Road, about 3/4 mile (by road) SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  RSA700243  Carex lemmonii L. Ahart 2004-7-23 11296 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road., About 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  UCD140478  Carex lemmonii Robert E. Preston 1982-7-16 335 Butte Crane Valley. 1584 Comment
  SEINET7899355 Image available Carex lemmonii H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  SEINET7899367 Image available Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville Comment
  SEINET10828947  Carex luzulina var. ablata Lowell Ahart 2010-9-21 Ahart 17219 Butte T25N, R5E, northeast 1/4 Section 29. Near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1918 Comment
  CHSC52282  Carex mariposana L. P. Janeway 1987-6-27 2332 Butte Along Little Kimshew Cr just N of Ramsay Bar. Site of old Ramsay Bar mining and timber activities. 1341 Comment
  HSC87067  Carex multicaulis L. P. Janeway 1987-5-20 2080 Butte N fork of Feather River, above Hwy. 70, 3.1 mi. NE of Pulga Bridge 473 Comment
  CHSC88941  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8244 Butte High Cascade Range. Meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  SEINET7568661 Image available Carex nebrascensis Unknown 2004-8-15 8245 Butte Jonesville 7.5' quad. High Cascade Range, at Cold Springs, north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  CHSC44694  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-1 2930 Butte Mdw between two lakes at SE-most headwaters of Butte Cr. 1935 Comment
  UC1609338  Carex nudata Lowell Ahart 1993-4-8 6931 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  UCD140697  Carex nudata Robert E. Preston 1990-4-19 595 Butte on banks of Butte Creek, at site of proposed Forks of Butte diversion dam, west of DeSabla. 676 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  JEPS106104  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale 32 Comment
  RSA754367  Carex praegracilis L. Ahart 2009-6-3 15824 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
  CAS-BOT-BC117983  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-22 3064 Butte Jonesville quad. Upper canyon of Philbrook Cr 0.7 mi W of the pass. 1935 Comment
  CHSC44948  Carex simulata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2504 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Mdw on north side of the creek. 1661 Comment
  CHSC45070  Carex simulata Vernon Oswald 1983-6-22 739 Butte South of road leading into Soda Springs Campground from Hwy 32, ca. 4 mi nne of Lomo. 1112 Comment
  CAS-BOT-BC116739  Carex subfusca A. A. Heller 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  SEINET3138432  Carex subfusca R. Tallent 1987-8-17 952 Butte Lassen National Forest; along Jones Creek, NE of Jonesville. 1720 Comment
  UC406290  Carex subfusca E. B. Copeland 1929-7-20 51 Butte Jones Creek Jonesville 1500 Comment
  UCD141165  Carex subfusca L. P. Janeway 1988-6-19 2834 Butte 3.1 miles north of Stirling City towards Inskip along logging road 0.2 mile west of Skyway. 1219 Comment
  SEINET7486568 Image available Carex tumulicola Peter F. Zika 2009-1 24506 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) Comment
  RSA769593  Carex utriculata L. Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  JEPS121948  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC109183  Castanea dentata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road,west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC248999  Castilleja A. A. Heller 1914-8-7 11658 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CAS-BOT-BC249117  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC114975  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 A Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC44355  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 a Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  JEPS15597  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4723 Butte 0.5 mi below Nimshew (on Nimshew (Humbug) Road, along sides of Butte Canyon); Butte Canyon 701 Comment
  SEINET10549335  Castilleja applegatei var. fragilis Mary Susan Taylor 1982-5-2 Taylor 4384 Butte 2300 ft. T22N R4E sec 13. Pulga SW quad. N side of Hwy 70, 4.2 mi w of Pulga bridge, ca. 19 air mi ne of Oroville. 701 Comment
  JEPS124208  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC112905  Castilleja campestris B. Castro; Robin Carter 2011-4-29 1875 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Road. 34 Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC3657  Castilleja exserta Robert D. Briggs 1966-4-12 R- 117 Butte 3 miles south of downtown Chico. Comment
  CHSC83908  Castilleja exserta subsp. exserta Lowell Ahart 2003-4-10 10086 Butte On the west side of a wash, near the south rim of South Table Mountain, about 2 miles (air) north of Oroville. 302 Comment
  CDA41243  Castilleja lacera L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  CHSC115321  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1 1/2 miles southwest of the intersection of Robinson Mills Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  CHSC43193  Castilleja lacera R. A. Schlising 1981-4-27 4042 Butte S of Cohasset. Immediate roadside of Cohasset hwy, 2.9 mi NE jct with road to Richardson Springs. 201 Comment
  CHSC50565  Castilleja lacera Vernon Oswald 1990-7-3 4339 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. 1780 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
  JEPS81864  Castilleja lacera L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5844 Butte 2.9 mi e Keefer junction (along Cohasset Road, ca 8 air mi n of Chico at Big Chico Creek); Big Chico Creek 182 Comment
  UC886502  Castilleja lacera A. A. Heller 1915-5-28 11904 Butte near Cohasset (Sierra foothills); Sierra Comment
  CHSC33341  Castilleja rubicundula subsp. rubicundula R. Banchero; R. Schlising 1981-5-3 460 Butte 0.2 mi e of the jct of Meridian Rd and Hwy 99. Comment
  RSA32001  Castilleja subinclusa subsp. subinclusa A. A. Heller 1941-4-12 16006 Butte Pentz-Paradise grade; 2 m. above Pentz. A few scattered clumps in clay soil on a slope nar shrubs. Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  CHSC107398  Ceanothus cuneatus Blake McSorley 2010-3-2 Butte Bidwell Park at end of Centennial Ave. In degraded riparian area along Big Chico Creek. 86 Comment
  CHSC81297  Ceanothus integerrimus J. Trizzino 2001-4-24 48 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Riparian corridor along Big Chico Creek. 91 Comment
  SBBG28487  Ceanothus integerrimus A. A. Heller 1938-5-28 Butte Feather River Hwy, near Pulga 420 Comment
  UC774521  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11050 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada Comment
  CDA13233  Ceanothus lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13080 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  JEPS97589  Ceanothus lemmonii R. D. Stone and W. B. Davilla 1984-4-21 596 Butte ca. 0.3 mi SE of De Sabla Powerhouse; Butte Creek drainage 609 Comment
  POM195581  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla. Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCD123936  Ceanothus prostratus D. O. Burge 2007-5-11 921 e Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) north of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 deg. (True) NNW of Magalia. 850 Comment
  POM181716  Ceanothus velutinus H. F. Copeland 1927-9-3 194 Butte Jonesville. Comment
  CAS-BOT-BC52421  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC108969  Cedrus libani var. libani Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17816 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 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
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  JEPS115189  Centaurium muehlenbergii Lowell Ahart 2009-6-19 15943 Butte On dry soil, north of a trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  RSA724859  Centaurium muehlenbergii B. Castro, L. P. Janeway 2005-6-5 1480 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  CDA43076  Centaurium tenuiflorum L. P. Janeway 2011-6-26 10401 Butte Cascade Range Foothills/Sacramento Valley.; Upper Bidwell Park, Chico; just west of Horseshoe Lake. Comment
  CHSC28516  Centaurium tenuiflorum M. S. Taylor; J. D. Jokerst 1979-10-13 2271 Butte Wet spot near creek on Jordan Hill Rd, (Ponderosa Way on some maps) ca. 1.5 mi n of Sawmill Peak, ca. 10.7 mi n of JH Rd jct with Concow Rd, ca. 2 mi ne of Magalia. 853 Comment
  CHSC72248  Centromadia fitchii Lowell Ahart 1998-9-11 8060 Butte Along a wash, 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. 388 Comment
  CAS-BOT-BC222899  Cephalanthus occidentalis Lowell Ahart 1981-8-11 3027 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS108153  Cerastium arvense L. P. Janeway, J. Tuitele-Lewis, S. Mackey Hillaire, M. Brown 2005-5-9 8382 Butte Northern High Sierra Nevada. Plumas National Forest; Ridge on southwest side of Rim Road (Ponderosa Way) 0.9 km southeast of junction with Concow Road; north end of Rocky Ridge 991 Comment
  CHSC61307  Cerastium glomeratum Lowell Ahart 1993-7-23 7096 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS117150  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  UCD98036  Cerastium glomeratum Joseph M. DiTomaso 1976-5-23 474 Butte On south side of Lake Oroville. 274 Comment
  CAS-BOT-BC251514  Cercis occidentalis Camille F. Nowell 2012-7-16 47 Butte Hwy 32 approx 13 mi NE of Chico. 433 Comment
  SEINET11910531  Cercocarpus betuloides Unknown 1975-1 18 Butte 50 Yd. up dirt road junct. with Cohasset Rd., 7.0 mi NE of Chico Muni Airport 305 Comment
  CAS-BOT-BC276479  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  UCD159526  Chamaemelum fuscatum D. S. Park 2011-4-6 275 Butte Near Oroville. Off Jem Rd. Growing in abundance in and nearby orchards and roadside. 44 Comment
  JEPS95931  Chamaesyce maculata Lowell Ahart 1999-8-13 8160 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
  SBBG27221  Chamaesyce maculata W. H. Wheeler 1935-10-24 296 Butte about building, Foreign Plant Introduction Station, Chico 76 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
  CDA34638  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-3 15955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC102992  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UC204565  Chamaesyce serpyllifolia A. A. Heller 1914-8-11 11674 Butte w Chico; Sacramento River Comment
  SEINET10529951  Cheilanthes californica Mary Susan Taylor 1981-5-15 Taylor 3732 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  UC399640  Cheilanthes gracillima H. M. Hall July 1914 9806 Butte near Jonesville 1737 Comment
  SEINET10529942  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3465 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  CHSC34768  Chenopodium album L. Ahart 1981-11-6 3223 Butte On good soil on west side of road near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC38308  Chenopodium album Vernon Oswald 1983-6-18 709 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS102592  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-10-10 9413 Butte On the north side of Gridley Road, about 100 yards SE of the bridge across the Feather River, about 3 1/2 miles (air) east of Gridley. 27 Comment
  CDA7111  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  SEINET10479019  Chenopodium botrys Lowell Ahart 1983-8-16 Ahart 4285 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  CHSC26684  Chimaphila menziesii M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1482 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  CAS-BOT-BC451486  Chimaphila umbellata Kate E. Conger 1907-1-1 18 Butte Brush Creek Comment
  UC455449  Chimaphila umbellata Miss Kate Conger 1907-1 Butte Bush Creek Comment
  CHSC103702  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  RSA0058881  Chondrilla juncea Lowell A. Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles(air) northwest of Forbestown. 483 Comment
  CHSC3367  Chrysolepis sempervirens M. Gregg 1966-4-23 105 Butte 2 miles south of Butte Meadows on Bull Run Rd. Along side of road. Comment
  SEINET10475261  Chrysothamnus nauseosus subsp. albicaulis Mary Susan Taylor 1979-10-13 Taylor 2261 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
  CHSC37344  Cicendia quadrangularis F. J. Fuller 1982-4-17 18 Butte Ca. 30 ft n of Broyles Rd, 0.4 mi w of Hwy 99. 59 Comment
  JEPS115351  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  POM271465  Circaea alpina subsp. pacifica Lyman Benson 1932-7-28 3962 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC37410  Cirsium arvense R. A. Schlising; J. D. Jokerst 1982-9-7 4390 Butte N part of county, n of Philbrook Reservoir, in Coon Hollow. Roadside. 1706 Comment
  CAS-BOT-BC278079  Cirsium douglasii var. breweri H. F. Copeland 1920-8-12 128 Butte Jonesville 1219 Comment
  CDA1320  Cirsium occidentale var. candidissimum T. C. Fuller 1958-7-7 1908 Butte 1 mi. S of Pulga; roadside 0.1 mi. N of bridge over North Fork Feather River. 0 Comment
  POM304703  Cirsium occidentale var. venustum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 193 Butte Feather River Hwy. Comment
  CAS-BOT-BC285723  Cirsium vulgare Lowell Ahart 1981-8-15 3038 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CAS-BOT-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC228757  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC163546  Clarkia arcuata Lowell Ahart 1983-6-26 4159 Butte Along Bean Creek Road, about 5 miles south of Little Bald Rock, about 17 miles north-east of Oroville 600 Comment
  CHSC3521  Clarkia arcuata John Francis 1966-4-16 118 Butte On hillside S. of covered bridge (Honey Run). Comment
  CHSC56759  Clarkia concinna subsp. concinna L. P. Janeway 1991-6-1 3988 Butte Cut-bank of Dark Canyon Road 3.6 mi south of Big Bend/Parkhill. 280 Comment
  SEINET10453151  Clarkia gracilis subsp. albicaulis Mary Susan Taylor 1977-6-25 Taylor 1380 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC171884  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA13328  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13174 Butte Sierra Nevada; Near intersection of 22N89 and Hwy 162. Approx. 0.2 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC35148  Clarkia mildrediae subsp. lutescens R. Schlising; K. Tarp, R. Banchero 1981-7-11 4141 Butte NE part of county, E of N Fork of Feather River at Coyote Gap region; at roadside along Four Trees Road. 1447 Comment
  CHSC71145  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-12 4437 Butte About 0.5 mi north of Mountain House; along Road 22N49 1.2 mi southwest of Fourmile Ridge Road (Road 22N33). Road cutbank. 853 Comment
  UCD104792  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road, 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  RSA0049654  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor, Bryan Waylan 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road descending into West Branch Feather River canyon 1.4 miles down (north) from the intersection with the Skyway 1005 Comment
  UC1606714  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-7 4834 Butte along Highway 70 1.3 mi ne of Jarbo Gap (North Fork Feather River canyon); , Highway 70 655 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-BC172534  Clarkia purpurea subsp. purpurea Lewis S. Rose 1963-6-5 63143 Butte 3 mi. W of Palermo 45 Comment
  CHSC10819  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CAS-BOT-BC164932  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 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
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  UC1071881  Clarkia rhomboidea H. and M. Lewis 1951-5-1 824 Butte 1.65 mi s of road to Paradise (road from Oroville to Magalia) Comment
  RSA512848  Clarkia rhomboidea J. T. Howell 1967-6-22 42645 Butte Sierra Nevada: 3 miles northwest of Pulga Bridge, canyon of the Feather River North Fork. Comment
  UCD21830  Clarkia rhomboidea L. D. Gottlieb 1993-8-27 9320 Butte 1 mile south of Big Bend Rd. on Dark Canyon Road. Comment
  CAS-BOT-BC165443  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC95189  Claytonia palustris R. D. Fischer 2005-6-5 825 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  NY342211  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville; above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel 1550 Comment
  RSA0005217  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 Km east of the Jonesville Hotel. Comment
  CAS-BOT-BC439754  Claytonia perfoliata Lowell Ahart 1982-4-24 3369 Butte About 3/4 mile south-west of the Myers home, Myers Ranch, Sutter Buttes 50 Comment
  CHSC101322  Clematis lasiantha Lowell Ahart 2009-4-22 15589 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC116963  Clematis lasiantha Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  CAS-BOT-BC92578  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reserve, about 5 miles northeast of Forbestown. 450 Comment
  CHSC31844  Clematis ligusticifolia L. Ahart 1976-8-30 1192 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CHSC43756  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-6-10 2982 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Hunbug Rd. 1874 Comment
  UCD123666  Collinsia sparsiflora Michael A. Vincent; Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 Comment
  SEINET10548309  Collinsia sparsiflora var. bruceae Lowell Ahart 1984-4-3 Ahart 4537 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC11083  Collinsia sparsiflora var. collina Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC44775  Collinsia tinctoria R. Banchero 1980-6-5 186 Butte At the jct of Hwy 70 and Pinkston Canyon Rd, ca 6.4 mi SW of the jct of the Feather River and Hwy 70. 633 Comment
  SEINET10548316  Collinsia tinctoria Mary Susan Taylor 1974-5-20 Taylor 254 Butte Chico. Comment
  SEINET10548317  Collinsia torreyi Mary Susan Taylor 1978-6-24 Taylor 1648 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 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
  UC129469  Collomia heterophylla Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC180253  Comandra umbellata subsp. californica Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC42577  Conium maculatum Vernon Oswald 1983-6-28 781 Butte Along roadways at Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  CDA32106  Conyza canadensis L. Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. Comment
  JEPS117532  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  UCD123122  Cordylanthus tenuis Barbara L. Wilson; Richard Brainerd, Lawrence Janeway, Barbara Castro 2010-8-7 16244 Butte Forbestown Road. 806 Comment
  CHSC39062  Cordylanthus tenuis subsp. viscidus R. A. Schlising; R. Banchero, A. Ratcliff 1980-9-6 3984 Butte NE of Oroville, about 5 miles SW village of Feather Falls. Comment
  UC1562382  Cordylanthus tenuis subsp. viscidus Vernon Oswald and Lowell Ahart 1990-7-31 4415 Butte ca 2 mi ne Concow (Jeep Trail between Concow Rd and Rim Rd) 899 Comment
  JEPS102542  Coriandrum sativum Lowell Ahart 2001-5-10 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  CHSC90089  Cornus nuttallii Brent E. Palmer 1991-4-4 16 Butte 1 mi south of Forest Ranch on Hwy 32. 10 ft south of roadside. 609 Comment
  UC1122787  Cornus nuttallii C. G. Albertus 1933-7-3 40 Butte 1 3/4 mi. n.e. Promontory Point (Plot 67); Chico Quad. 1127 Comment
  SEINET12137515  Cornus nuttallii Unknown 1979-1 14 Butte N rim of Magalia Reservoir, ca 300 yds E of intersection between Dogtown Rd & Skyway 914 Comment
  CHSC31655  Cornus sericea subsp. occidentalis L. Ahart 1977-5-20 1386 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  RSA700215  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  SD1899  Corydalis caseana E. B. Copeland 1929-7-3 Butte Comment
  CHSC20387  Corydalis caseana subsp. caseana L. M. Mayer; D. E. Brink 1974-8-20 Butte Willow Creek, at the Tehama County line. 1/2 mi downstream from the junction of the creek and Colby Mountain Lookout Rd. Comment
  CHSC103167  Cotoneaster lacteus Lowell Ahart 2009-11-19 16562 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC90637  Cotula australis Lowell Ahart 2005-4-2 11680 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-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  JEPS128723  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CAS-BOT-BC291332  Cotula coronopifolia Lowell Ahart 1982-5-29 3450 Butte North of the Peter Ahart Ranch about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  JEPS117153  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley 28 Comment
  CHSC26736  Crassula connata M. S. Taylor; M. Hayes 1978-4-14 1552 Butte E of Williams Rd ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CDA25355  Crassula connata T. C. Fuller 1958-4-15 4795 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  SEINET10449709  Crassula erecta Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4853 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET10449716  Crassula muscosa Mary Susan Taylor 1980-3-28 Taylor 2403 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
  SEINET10449717  Crassula muscosa Mary Susan Taylor 1980-4-16 Taylor 2492 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC82270  Crataegus S. Posner 1972-9-23 Butte Garden behind apartment complex at 725 Nord Ave., Chico. Comment
  CHSC103025  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
  CAS-BOT-BC376468  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte W side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap 853 Comment
  CHSC116134  Croton setiger Lowell Ahart 2015-11-7 20620 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC31692  Croton setiger L. Ahart 1972-6-21 118 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC39513  Crucianella angustifolia Lowell Ahart 1983-6-12 4037 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC190092  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles northeast of Oroville. 269 Comment
  JEPS94434  Crypsis schoenoides Lowell Ahart 1997-10-24 7940 Butte about 20 yards n of the South Fork of the Feather River (and on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderoas Dam); Sucker Creek, strand of Lake Oroville 274 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
  SEINET10518393  Crypsis vaginiflora A. Arthur Heller 1914-7-31 Heller 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  UC1609327  Cryptantha affinis Lowell Ahart 1993-6-26 7018 Butte about 1 mi w Lost Creek Reservoir (e side of the dirt road) 1188 Comment
  CHSC28130  Cryptantha flaccida J. D. Jokerst 1979-4-28 205 Butte Abundant in sandy, rocky soil on upper levee of Rock Crk., 150 m nw intersection Rock Crk. Rd. and Cohasset Hwy. 121 Comment
  CHSC44476  Cryptantha flaccida Lowell Ahart 1988-5-15 6001 Butte On dredger tailings, about 1/4 mile east of Highway 70, about 1/2 mile south of Oroville Dam Boulevard, south of Oroville. 42 Comment
  JEPS118004  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  JEPS93843  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ion oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  SEINET10497276  Cryptantha flaccida Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4649 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10497277  Cryptantha flaccida Lowell Ahart 1985-5-10 Ahart 4951 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  SEINET12328366  Cryptantha flaccida L. Ahart, Ahart, P. 1983-1 4119 Butte along Ponderosa Way (Big Ridge Road), ca 2 mi SE of the jct with Oroville-Quincy Hwy.. 500 Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  JEPS83262  Cryptantha rostellata C. C. Parry 1887-4-1 Butte Chico Comment
  CHSC75436  Cupressus macnabiana G. F. Hrusa; T. D. Wilfred 1997-5-7 13740 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  SDSU1733  Cupressus macnabiana D. F. Howe 1966-9-1 4315 Butte Magalia 579 Comment
  SEINET10932809  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2121 Butte Sierra Nevada foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  UC1191664  Cuscuta californica Herbert L. Mason and Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge Butte Sink Comment
  CDA14092  Cuscuta californica var. californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13977 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC48359  Cuscuta californica var. californica Vernon Oswald 1988-6-14 3378 Butte Jordan Hill Rd. 1.0 mi (odometer) e of the West Branch of the Feather River. 579 Comment
  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
  JEPS98505  Cuscuta campestris Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  RSA0037106  Cuscuta campestris Lowell A. Ahart 2013-11-17 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC31026  Cuscuta howelliana M. S. Taylor 1979-5-6 2008 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113062  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte On dry smoothed dredge tailings, northwest of a large wash, about 1/2 mile southeast of Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  RSA0105592  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte Northwest of a large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  JEPS118063  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 -A Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC27581  Cuscuta subinclusa Robert Schlising 1977-8-8 3204 Butte Forest Ranch, 1,8 mi S jct Nopel Road and Highway 32 Comment
  POM76966  Cycladenia humilis Mrs. R. M. Austin, C. C. Bruce 1898-05 s.n. Butte Doc Mill Comment
  CHSC28484  Cycloloma atriplicifolium R. Schlising 1979-10-13 3497 Butte Along Sacramento River w of Chico. Just n of Chico Landing Site in Bidwlel River State Park. 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
  CHSC44464  Cyclospermum leptophyllum Lowell Ahart 1988-5-15 6003 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  JEPS127199  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south Oroville. Comment
  CHSC4515  Cynoglossum grande C. Glascock 1965-3-2 265 Butte Ca. 150 yds wsw of police firing range on Chico Canyon Rd., Chico. Comment
  CHSC34199  Cyperus bipartitus J. D. Jokerst; L. Ahart 1981-9-26 1493 Butte Swale 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CAS-BOT-BC114736  Cyperus difformis Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96943  Cyperus difformis Lowell Ahart 2007-7-8 14268 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS113500  Cyperus difformis Lowell Ahart 2007-7-8 14268 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC111168  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 A Butte Southwest of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  RSA0046895  Cyperus eragrostis Richard Carter 2006-7-30 17095 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99; along Mud Creek. Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  UC1100468  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13023 Butte canal near big pond by Sacramento Outing Club; Butte Sink 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
  CDA38971  Cyperus flavescens L. Ahart, Vernon H. Oswald 1999-8-13 8143 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
  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
  CHSC68401  Cyperus niger L. P. Janeway 1988-6-19 2825 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  SEINET227301  Cyperus niger Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mile NE of Kunkle Reservoir S of Paradise 600 Comment
  CHSC45155  Cyperus squarrosus Lowell Ahart 1974-7-1 504 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS115648  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC110841  Cyperus vegetus A. A. Heller 1939-8-26 15479 Butte River Road west of Chico, Lower Sonoran Life Zone Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1594527  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  CAS-BOT-BC68043  Cystopteris fragilis Mary E. Wall 1920-3-28 s.n. Butte Las Plumas Comment
  CAS-BOT-BC68049  Cystopteris fragilis Lowell Ahart 1981-3-29 2713 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  RSA692783  Cystopteris fragilis M. M. Boney 1897-1 4215 Butte Unspecified Comment
  SEINET10937953  Cystopteris fragilis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4130 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC65905  Damasonium californicum Vernon H. Oswald 1996-4-20 7411 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Marshy drainage at the SW boundary of Tract 3.4, Sanctuary II. 32 Comment
  SEINET10598269  Danthonia californica var. americana Quick 1965-7-25 QUICK 65 -18 Butte Swampy alder thicket below spring. Section Corner Meadow, Coyote Gap-Four Trees Road. Comment
  CHSC3609  Daphne odora R. Jaegel 1966-2-19 14 Butte Collected 6 blocks north of Bidwell Mansion; Chico. Comment
  CHSC34232  Darmera peltata M. S. Taylor 1981-5-7 3636 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC66290  Darmera peltata Lowell Ahart 1996-6-5 7681 Butte Along river, about 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CHSC27205  Datura ferox 1978-10-19 Butte South of Durham, along Midway, near junction of Standord Lane and crossing of the latter by S.P.T. Co. RR. Comment
  CHSC23416  Datura wrightii K. Stern 1970-1-1 Butte S. end of Eddy Lake, Rancho Llano Seco. Comment
  CHSC38722  Datura wrightii Vernon Oswald 1983-10-8 1054 Butte Upper Bidwell Park, Chico, on the south edge of the parking lot at Five Mile Recreation Area. 85 Comment
  CHSC36297  Daucus carota M. S. Taylor 1982-8-16 4986 Butte Just n of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  CHSC29798  Daucus pusillus M. S. Taylor; J. D. Jokerst 1980-5-14 2882 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC81213  Daucus pusillus J. Trizzino 2001-4-29 63 Butte End of Potter Road north of Skyway before Honey Run, at meeting with seasonal creek, nearly dry at this time. 80 Comment
  SEINET10840961  Daucus pusillus Mary Susan Taylor 1980-6-14 Taylor 2882 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  JEPS104466  Delphinium hansenii subsp. hansenii Lowell Ahart 2003-5-27 10225 Butte On the e side of the dirt road, at Parking Area P, Upper Bidwell Park, ca 5 mi e of Manzanita Avenue, Chico. 228 Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  UC1080379  Delphinium hansenii subsp. hansenii E. K. Balls 1957-5-22 22501 Butte Hwy U.S. 40, 8.6 mi NE of Oroville, Foothill Woodland Plant Community 91 Comment
  CHSC44985  Delphinium nudicaule Martin Devanna 1987-4-3 5 Butte Ca. 4 mi ne Chico. 10 m nw Big Chico Creek. 198 Comment
  UC392243  Delphinium nuttallianum E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  UC1080381  Delphinium patens subsp. patens E. K. Balls 1957-5-23 22529 Butte 3 mi se turn-off (Hwy 32 to De Sabla) 670 Comment
  UC118572  Delphinium patens subsp. patens Mrs. R. M. Austin 1883-3-1 Butte Little Chico Comment
  CHSC53170  Delphinium variegatum M. Johnson 1977-4-26 16 Butte Ca. 50 ft. s of Skyway Dr., ca. 6 mi e of Chico. 457 Comment
  CHSC59344  Delphinium variegatum J. L. Guardino 1992-4-18 12 Butte Along southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  SEINET12099655  Delphinium variegatum Unknown 5 s.n. Butte no further locality Comment
  CHSC10711  Dendromecon rigida Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  CHSC26821  Deschampsia danthonioides M. S. Taylor 1978-5-7 1618 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 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
  UC203666  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte along rd. between Dry Creek and Gridley (and near Nelson) Comment
  SEINET10968134  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC201746  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC19647  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  SEINET12092936  Dicentra formosa L. Ahart, Ahart, P. 1984-1 4710 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, Yellow Pine Forest 700 Comment
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC116960  Dichelostemma capitatum Matthew Forster 2013-3-5 Butte Found along 14 Mile House Rd. 472 Comment
  SEINET12046807  Dichelostemma capitatum J. T. Nicol 1978-1 9 Butte ca 3.7 mi ESE of Ono on Platina Rd 290 Comment
  CHSC2098  Dichelostemma capitatum subsp. capitatum P. Delaplane 1965-3-30 65 Butte On Table Mtn. Ca. 13 mi NNW of Oroville, on W. side of Oroville Cherokee Rd. 609 Comment
  CHSC3633  Dichelostemma capitatum subsp. capitatum Alice L. Stoll 1966-2-14 2 Butte 7 miles N. E. of First and Main Streets, Chico. Approximately 50 yds. W. of road, Upper Bidwell Park. Comment
  CHSC96620  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  RSA256665  Dichelostemma multiflorum Kitsy Kelly 1974-4-20 16 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  SEINET10839398  Dichelostemma pulchellum Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4864 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC502520  Dichelostemma volubile Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  SEINET10533886  Dichelostemma volubile A. Arthur Heller 1915-4-20 Heller 11848 Butte Thickets in the digger pine and oak belt, 2 miles below Centerville in the Sierra foothills, associated with Ceanothus, Aesculus and Toxicodendron in the blue oak-digger pine belt, where it is rather common. Comment
  CDA42841  Dichondra donelliana L. Ahart 2011-6-5 17367 Butte Just north of the small wash, on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET10496684  Dichondra donelliana Mary Susan Taylor 1980-5-24 Taylor 2739 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43280  Digitaria ischaemum Lowell Ahart 1987-8-30 5870 Butte Road gutter, along Highway 70, about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  UC1037341  Digitaria sanguinalis E. Wilson 1934-9-3 71 Butte Biggs Rice Station Comment
  CHSC62335  Diospyros B. Castro 1990-5-6 421 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, close to banks of a branch of Comanche Creek (or 'Edgar Slough'). 70 Comment
  CAS-BOT-BC153764  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  CHSC10601  Diplacus douglasii Lowell Ahart 1961-3-16 Butte Salmon Hole. 91 Comment
  CHSC30376  Diplacus douglasii J. D. Jokerst 1979-3-9 1141 Butte Top of North Table Mt., adjacent to and S of the waterfalls of the S branch of Coal Cr. Canyon, center of the W edge of section 8. Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  CHSC90254  Diplacus kelloggii Eric M. Haney 1989-4-21 6 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  CAS-BOT-BC154033  Diplacus torreyi A. A. Heller 1913-6-7 10799 Butte Near Stirling 1074 Comment
  CHSC39545  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC82215  Diplacus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  POM182759  Disporum hookeri var. hookeri Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  POM193355  Dodecatheon alpinum E. B. Copeland 1930-6-26 6328 Butte Jonesville. 1550 Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC31856  Dodecatheon clevelandii subsp. patulum L. Ahart 1974-2-15 302 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC31805  Dodecatheon hendersonii L. Ahart 1975-3-23 716 Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek on moist to dry soil, near large rocks. 45 Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC1586407  Dopatrium junceum Lowell Ahart, Peter Ahart, and Carl Wick 1991-7-21 6668 Butte Rice Experiment Station, about 1/8 mi S of Butte City Hwy, N of Biggs 30 Comment
  UCD19371  Dopatrium junceum E. Dean; with J. Ditomaso and E. Healy 2001-8-20 862 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC42258  Downingia cuspidata John E. Hunter 1986-4-12 50 Butte Vacant lot within City of Chico, ca. 80 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  RSA337380  Downingia cuspidata L. Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca 1.5 miles N and 0.5 miles E of Honcut, ca 12 miles S of Oroville. 50 Comment
  CHSC33700  Downingia insignis L. Ahart 1981-4-6 2748 Butte In a depression se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  POM59144  Downingia ornatissima A. A. Heller, H. E. Brown 1902-5-14 5549 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10458518  Downingia ornatissima Mary Susan Taylor 1978-5-7 Taylor 1609 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC112885  Downingia ornatissima var. ornatissima Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  CHSC39776  Draba verna var. aestivalis David A. Durham 1978-3-22 10 Butte S slope of Butte Creek, near Covered Bridge on Honeyrun Road, 6.5 mi se of Skyway--Highway 99 Junction, at Chico. 137 Comment
  SEINET10448472  Draba verna var. aestivalis Lowell Ahart 1983-4-1 Ahart 3914 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  UCD123983  Drosera rotundifolia Barry Rice 2011-7-6 BR 110705 Butte no exact location. 1460 Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 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
  UC1562388  Drymocallis glandulosa var. glandulosa Vernon Oswald and Lowell Ahart 1990-6-27 4332 Butte between Four Trees and Coyote Gap Rd 23N31 nw Four Trees Rd.; between Four Trees and Coyote Gap 1463 Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  JEPS116137  Dryopteris arguta Lowell Ahart 2009-8-20 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CAS-BOT-BC70855  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte along Old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC3244  Dudleya cymosa Virginia Hagaman 1966-4-17 118 Butte 6.3 miles east of Chico State College, on the side of road in Upper Bidwell Park above Salmon Hole. Comment
  CHSC112740  Dysphania ambrosioides Lowell Ahart 2013-11-17 19266 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC117752  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Around buildings, Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC116129  Dysphania botrys Lowell Ahart 2015-11-7 20617 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC113149  Dysphania pumilio Lowell Ahart 2013-11-13 19233 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
  CHSC112660  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC112604  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  UC1100268  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12740 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET3928601  Echinochloa muricata Lowell Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles south of Oroville.; 0 50 Comment
  CDA1998  Echinochloa oryzicola J. Harroun 1958-9-16 1232 -58 Butte 0 Comment
  SEINET10552489  Echinochloa oryzoides Crampton 1963-9-9 CRAMPTON 6887 Butte Butte County, 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  CAS-BOT-BC445584  Echinodorus berteroi Lowell Ahart 1972-7-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC30756  Eclipta prostrata M. S. Taylor 1980-9-26 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset, Chico. 30 Comment
  CAS-BOT-BC291136  Eclipta prostrata Lowell Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD131240  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC113453  Elatine ambigua Lowell Ahart 2014-7-31 19695 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  POM312315  Elatine ambigua H. L. Mason, Verne Grant, C. T. Mason 1946-8-15 13052 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC78180  Eleocharis acicularis Lowell Ahart 2000-5-27 8407 Butte Boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west end of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  RSA767490  Eleocharis acicularis var. acicularis L. Ahart 2010-6-9 16776 Butte Bottom of vernal pool, 10 yards north of poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4.5 air miles northeast of Oroville. 384 Comment
  SEINET13709912  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8699 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi SW Chico Comment
  CAS-BOT-BC113414  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots, Biggs Rice Experiment Station Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC28829  Eleocharis macrostachya J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 421 Butte Top of North Table Mt, ca 1.0 mi n of east edge jct with Cherokee Rd. 381 Comment
  JEPS120890  Eleocharis montevidensis Lowell Ahart 2013-7-6 18837 Butte E side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile N and 2.75 miles E of Honcut, about 13 air miles SE of Oroville. Comment
  CAS-BOT-BC113114  Eleocharis obtusa Lowell Ahart 1981-9-19 3186 Butte Cresta Power House 550 Comment
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC46473  Eleocharis quadrangulata Vernon Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the w side of Cana Pine Creek Rd just s of the Tehama County line. 54 Comment
  CHSC96094  Eleocharis quadrangulata L. P. Janeway 2006-7-19 8816 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 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
  RSA500437  Eleocharis quadrangulata Vernon H. Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the W side of Cana Pine Creek Road just S of the Tehama Co. line. 55 Comment
  CHSC78305  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  JEPS98724  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET13709963  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8411 Butte 2 Mi. S of Paradise, 1/4 Mi. NE of Kunkle Reservoir (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CDA38985  Eleocharis quinqueflora L. Ahart 2000-5-27 8405 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  RSA365441  Eleocharis quinqueflora H. F. Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  SEINET13710950  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8555 Butte 5 Air Mi. NE of Feather Falls (T21N, R7E, sec 27, NW 1/4) 3400 Ft. 1036 Comment
  SEINET3441887  Eleocharis quinqueflora Unknown 2000-7-7 8555 Butte Dallas, Dallas, about 8 miles east, Sunnydale, about 4.5 miles south of highway 635, Tain east Boulevard 1030 Comment
  JEPS124328  Eleocharis radicans Lowell Ahart 2015-10-20 20567 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS98281  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
  UCD61273  Eleusine indica L. E. Hazeltine 1916-7-27 Butte Chico. Comment
  CHSC110140  Elymus caput-medusae L. P. Janeway 2012-4-29 10807 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.3 km west of the powerlines. 125 Comment
  CAS-BOT-BC227298  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  CHSC40457  Elymus elymoides subsp. elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CAS-BOT-BC203429  Elymus glaucus subsp. glaucus John Thomas Howell 1962-6-15 37488 Butte Magalia 731 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  UCD105287  Epilobium brachycarpum H. F. Copeland 1928-8-29 s.n. Butte Jonesville, Butte Creek. 1524 Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  POM305913  Epilobium brachycarpum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 1107 Butte Feather River Hwy. Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC28527  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1979-8-4 2180 Butte Along Hwy 70 in ditch, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC66672  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald; Lowell Ahart 1996-7-22 8078 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 edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  JEPS95032  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7926 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  UC1564799  Epilobium ciliatum subsp. glandulosum V. Oswald and L. Ahart 1989-7-12 3854 Butte meadow near headwaters (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1901 Comment
  JEPS117551  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CHSC94065  Epilobium densiflorum R. D. Fischer 2005-6-12 742 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made near the junction of Guardian Trail on the dry roadbed, an opening in a brush/oak woodland. 219 Comment
  CHSC52095  Epilobium glaberrimum M. S. Taylor 1978-7-18 1726 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  JEPS87376  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  CHSC105809  Epilobium hornemannii subsp. hornemannii Lowell Ahart 2010-9-21 17213 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
  CHSC28378  Epilobium obcordatum M. S. Taylor; J. Jokerst 1979-7-21 2149 Butte Humboldt Peak, at Humboldt Summit. 2151 Comment
  CHSC38563  Epilobium pallidum Vernon Oswald 1983-5-25 554 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1200 ft e of Salmon Hole Parking Area. 182 Comment
  CHSC68018  Epilobium pallidum James D. Jokerst 1988-4-21 3000 Butte Parrott (Blakeley-Swartz) Ranch S of Chico. Comment
  UC726201  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise Comment
  SEINET3449326  Epilobium pygmaeum Unknown 2003-6-23 10313 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CHSC103720  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC103744  Epilobium torreyi Lowell Ahart 2010-5-22 16710 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC23649  Equisetum hyemale M. S. Taylor 1976-4-4 1049 Butte In middle of Old Humboldt Rd, ca. 2 mi w of Jonesville. 1706 Comment
  CAS-BOT-BC33516  Equisetum laevigatum Edwin Bingham Copeland 1930-6-24 403 Butte Jonesville 1500 Comment
  CAS-BOT-BC204458  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  SEINET10562503  Eragrostis cilianensis A. Arthur Heller 1914-6-2 Heller 11478 Butte Hills 8 miles north of Oroville. Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 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
  SEINET13711413  Eragrostis pectinacea Lowell William Ahart, Lowell William Ahart 1999-1 8152 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC49243  Eragrostis pectinacea var. pectinacea Vernon Oswald 1987-5-26 2933 Butte Bancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  JEPS113699  Eragrostis pectinacea var. pectinacea Lowell Ahart 2007-6-12 14083 Butte E side of Rockefeller Road, at the intersecton of Bald Rock Road and Rockefeller Road, about 13 mi (air) NE of Oroville 1011 Comment
  JEPS88562  Eragrostis pectinacea var. pectinacea Vernon H. Oswald and Lowell Ahart 1996-6-10 7733 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the Sacramento River at the n end of the Riparian Sanctuary); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  SEINET10507726  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 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
  CHSC45106  Eragrostis pilosa var. pilosa Lowell Ahart 1988-8-10 6169 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  JEPS117433  Eremocarpus setiger Lowell Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CAS-BOT-BC174185  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1987-7-1 3054 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek 1828 Comment
  CHSC76338  Eremogone congesta var. congesta L. P. Janeway; B. Castro 1999-8-1 6511 Butte Between Philbrook Lake Road and High Lakes Road, 0.15 mi east of their junction. 1682 Comment
  CAS-BOT-BC168360  Eremogone ferrisiae Lowell Ahart 1983-7-29 4246 Butte 2 miles east of Milsap Bar, ca. 25 miles northeast of Oroville - Sutter Buttes Region 900 Comment
  CAS-BOT-BC291277  Ericameria bloomeri A. A. Heller 1928-7-25 14704 Butte Butte Creek House Comment
  CHSC26623  Erigeron canadensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  UC1730265  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft SW of the Gap 1280 Comment
  CAS-BOT-BC295950  Erigeron philadelphicus H. E. Brown 1897-4-15 195 Butte Near Clear Creek Comment
  CHSC38152  Erigeron philadelphicus J. D. Jokerst 1983-5-12 1764 Butte At a spring ca 200 meters north of the waterfalls at the south branch of Coal Cr. Canyon, east edge of Table Mt. Comment
  CHSC58253  Erigeron philadelphicus Lowell Ahart 1992-5-9 6758 Butte Along a stream, east of Cherokee Road, about 2 (air) miles north of Oroville. 91 Comment
  CHSC27256  Eriobotrya japonica P. Moyer 1971-2-1 79 Butte CSUC Campus. S bank Chico Ck., at base of sycamore tree, w of L.S.-Ed. Psych. Bridge. 60 Comment
  CHSC88916  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 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
  JEPS115839  Eriodictyon californicum Lowell Ahart 2009-4-22 15591 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD119298  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  SEINET10497041  Eriodictyon californicum Mary Susan Taylor 1975-2-16 Taylor 385 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  NY280796  Eriogonum heracleoides var. heracleoides C. L. Hitchcock 1960-6-12 22002 Butte 1 mi. N of Craters of the Moon National Monument. Comment
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Jul 31 2012
  CAS-BOT-BC259400  Eriogonum luteolum Ira L. Wiggins 1928-9-9 3346 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  UCD100307  Eriogonum luteolum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside of Magalia Res. 310 Comment
  UC1594721  Eriogonum marifolium Lowell Ahart 1992-7-29 6892 Butte about 1 mi e, about 1/2 mi nw of Lotts Lake Carr mine 1828 Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  CHSC39015  Eriogonum nudum var. pubiflorum J. D. Jokerst 1983-8-21 1928 Butte Top of North Table Mt., ca 1/3 mile north of Beatson Hollow. Common along the edge of the basalt mesa in accumulation of basalt talus or on cliff faces and thin rocky soils. Comment
  UC489637  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  RSA726310  Eriogonum roseum L. Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 36 Comment
  SEINET8339333  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC52112  Eriogonum spergulinum var. reddingianum L. P. Janeway; C. A. Janeway 1986-9-13 1857 Butte Near mdw of upper Willow Creek. 1950 Comment
  CHSC113601  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  SEINET10838771  Eriogonum umbellatum var. speciosum Taylor 1981-7-10 Taylor 4063 Butte T22n, r5e. Ne sec 6. Pulga quad. N side of feather river hwy 70 at pulga bridge, On large serpentine outcrop about 20 mi ne of oroville. Corolla yellow. 488 Comment
  CHSC12920  Eriogonum vimineum K. R. Stern 1974-6-30 5777 Butte At roadside, 2.5 mi s of intersection of Hwy 32 and Butte Meadows turnoff, ca. 30 mi n of Chico. Comment
  UC896355  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte edge of a n slope at Little Summit Comment
  SEINET10475233  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-5-27 Taylor 2734 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC85819  Erodium brachycarpum Richard R. Halse 2002-3-27 6154 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  UCD114817  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC34161  Eryngium castrense L. Ahart 1981-8-31 3060 Butte Wyandotta Lake, ca. 8 mi. e of Oroville. 450 Comment
  CAS-BOT-BC40745  Erysimum capitatum A. A. Heller 1913-6-7 10826 Butte West Branch of the North Fork of the Feather River near Stirling. 914 Comment
  CHSC113519  Erythranthe breweri Lowell Ahart 2014-7-7 19599 Butte Depression in a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC38697  Erythranthe cardinalis Vernon Oswald 1983-7-13 865 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. 85 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC45725  Erythranthe glaucescens Phillip Scott 1988-4-18 38 Butte Mud Creek Bridge, Meridian Way ca. 3 mi w of Chico. 42 Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  CHSC10851  Erythranthe guttata Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS121998  Erythranthe guttata Lowell Ahart 2014-5-13 19465 Butte Below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  CHSC33578  Erythronium multiscapideum M. S. Taylor 1981-4-14 3535 Butte S side of Ponderosa Way. Ca. 1.10 mi n of its jct with Concow Rd, ca. 2 mi n of Lake Concow, ca. 3/4 mi s of Flea Mt. 1036 Comment
  CHSC42009  Erythronium multiscapideum Lowell Ahart 1976-4-15 1080 Butte Along Swede's Flat Road, about 2 miles east of the Bangor Oroville Highway, north-east of Bangor. 457 Comment
  CHSC51944  Erythronium multiscapideum Laraine Roothoff 1979-4-18 7 Butte 3 mi N of Magalia Reservoir on Skyway Rd, then 0.5 mi W of Holly Rd 0.2 mi W of road's end. 762 Comment
  UC725944  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte serpentine outcrop about 4 mi from Magalia (on Coutolenc road) Comment
  CAS-BOT-BC504527  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte Hills 12 miles northeast of Chico near Rock creek Comment
  CAS-BOT-BC504531  Erythronium multiscapideum Lowell Ahart 1980-3-26 2052 Butte Along Swedes Flat Road, near Bangor Comment
  CAS-BOT-BC504536  Erythronium multiscapideum John Thomas Howell 1962-6-15 37497 Butte Magalia 731 Comment
  SEINET10528914  Erythronium multiscapideum A. Arthur Heller 1939-4-8 Heller 15368 Butte Rather plentiful on a serpentine outcrop about 4 miles east of Magalia on the Coutoleno road. Transition Life Zone. Comment
  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
  SEINET12046589  Erythronium multiscapideum D. G. Bendix 1978-1 2 Butte 5 mi W of bridge over outlet from Paradise Irrigation Dist. Res. #1, Magalia 830 Comment
  SEINET7030126  Erythronium multiscapideum M. S. Taylor, D. Hemphill 1981-3-18 3422 Butte Paradise Quadrangle. From bridge crossing West Branch Feather River, calculated 0.5 mile east and south along Ponderosa Way (Jordan Hill Road) and both banks of the river. in serpentine; calculated 1 mile northeast of Magalia. Elevation calculated 1600 to 1900 feet. [EX MO Herbarium Accession No. 3834966]. Comment
  CAS-BOT-BC502809  Erythronium purpurascens Clarence R. Quick 1952-6-30 52 -103 Butte Ridge top, Big Bar Mountain east of Pulga Comment
  CAS-BOT-BC402647  Eschscholzia caespitosa Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CAS-BOT-BC402972  Eschscholzia californica Grace Kermode 1899-6-9 s.n. Butte Chico Comment
  UC85492  Eschscholzia californica Mrs. R. M. Austin Apr., 1896 86 Butte near Chico Comment
  CHSC90179  Eschscholzia lobbii Michael J. McNairn 1989-4-17 7 Butte Ca. 100 yds. ne jct. Lupin Ave. and Ceres Ave. ne Chico. 76 Comment
  RSA176478  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Field near the Hooker Oak east of Chico Comment
  SEINET12094432  Eschscholzia lobbii Unknown 1988-1 12 Butte ca 4 mi E of Hwy 70 on Palermo Rd., 4 mi S of Palermo Honcut Hwy., .1 mi E on Melody Lane 41 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  SEINET194884  Eunanus douglasii A. A. Heller 1938-1 15025 Butte On the treeless undulating plain of Table Mt. Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 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
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC615  Euphorbia peplus V. Holt 1945-11-16 Butte Chico. 57 Comment
  SEINET10453781  Euphorbia serpillifolia Lowell Ahart 1990-9-30 Ahart 6606 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north of the Canyon Creek Bridge across lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC9139  Euphorbia spathulata M. P. Coffeen 1970-4-14 16 Butte 100 yds. S. of Horseshoe Lake in Bidwell Park, Chico. 91 Comment
  CHSC50816  Eurybia integrifolia Vernon Oswald 1990-7-23 4381 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  JEPS120023  Euthamia occidentalis Lowell Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC93936  Festuca californica L. P. Janeway 2006-5-28 8641 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. 860 Comment
  CAS-BOT-BC278798  Festuca occidentalis Lowell Ahart 1984-6-10 4704 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC49547  Festuca occidentalis Vernon Oswald 1987-6-2 2946 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. Along a trail in forest. 883 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
  CHSC61540  Festuca rubra Lowell Ahart 1993-7-6 7064 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA754865  Festuca subulata L. Ahart 2008-6-2 14807 Butte South side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  SEINET11672004  Festuca subulata Unknown 1983-1 4107 Butte along Ponderosa Way ca 0.12 mi E of int Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville Comment
  SEINET10475090  Filago gallica Mary Susan Taylor 1978-5-6 Taylor 1623 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  CHSC34194  Fimbristylis autumnalis R. A. Schlising 1979-10-13 3502 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC1955  Foeniculum vulgare A. Goekler 1929-5-27 Butte Chico 57 Comment
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  CHSC12117  Fragaria vesca M. F. Smith 1972-4-22 6 Butte On Madrone Meadows Road two (2) miles from turn off at Lumpkin Road 1/2 mile west of Feather Falls Community. 914 Comment
  SD2199  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville, in low woods 1550 Comment
  CAS-BOT-BC437084  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  HSC104007  Frangula californica subsp. tomentella L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte Chico, Lower Bidwell Park; along a horse trail, ~50 ft. south of Vallombrosa Ave., ~ 0.25 mi. W of Peterson Drive 76 Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CAS-BOT-BC223383  Fraxinus dipetala Mrs. C. C. Bruce 1897-4-1 s.n. Butte Humboldt road Comment
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  CHSC99556  Fraxinus dipetala L. P. Janeway 2008-5-26 9370 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  LA50899  Fraxinus dipetala A. A. Heller; 1915-4-12 11815 Butte hills 14 mi NE of Chico near Rock creek Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  JEPS33409  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte in Pinkston Canyon, Big Bend Road to Yankee Hill, close to junction of new US 40-A w old road at upper end of Feather River damsite Yankee Hill; Pinkston Canyon 548 Comment
  CHSC2276  Fritillaria affinis N. Maxwell 1929-3-2 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC136069  Fritillaria affinis Flower Show 1929-4-1 s.n. Butte Flower show Comment
  CAS-BOT-BC130196  Fritillaria agrestis A. A. Heller 1914-4-29 11341 Butte 12 miles north of Chico Comment
  SEINET10469655  Fritillaria eastwoodiae Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3430 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC29033  Fritillaria micrantha J. D. Jokerst 1980-3-28 525 Butte E of the northern most portion of North Table Mt. 365 Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC4005  Galium aparine E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC47477  Galium aparine Lowell Ahart 1974-4-14 398 Butte Peter Ahart Ranch, about 1 mi north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  SEINET10500623  Galium aparine Mary Susan Taylor 1975-3-25 Taylor 427 Butte Chico. Comment
  POM219311  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  CHSC104015  Galium murale Lowell Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC93496  Galium murale Lowell Ahart 2006-5-8 12598 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  CDA6660  Galium parisiense L. Ahart 2000-6-27 8524 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  CHSC64216  Galium porrigens var. tenue Mike Carpenter 1990-3-30 13 Butte Ca. 450 ft. E of Forbes Town Rd. Ca. 1.1 mi S of the intersection of Hwy. 162 and Forbes Town Rd. 728 Comment
  JEPS18283  Galium sparsiflorum subsp. glabrius Rimo Bacigalupi with H. Whisler 1957-7-26 6037 A Butte along Humbug Rd 2.2 mi sw Nimshew (at eastern canyonside of Butte Creek); eastern canyonside of Butte Creek 609 Comment
  CHSC61010  Galium spurium var. echinospermum Lowell Ahart 1993-6-20 6988 A Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC25343  Galium tricornutum Marc P. Hayes 1977-4-24 20 Butte Adjacent Hwy 99 ca. 2.3 km S of Butte Creek. 60 Comment
  CHSC35215  Galium tricornutum M. S. Taylor 1981-5-1 3584 Butte E side of Hwy 70, ca. 4 air mi NW of Oroville. 91 Comment
  CHSC30816  Garrya fremontii M. S. Taylor; J. D. Jokerst 1980-4-18 2530 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  UC1122706  Garrya fremontii J. E. Sowder 1933-7-14 112 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  UCSC000103  Gastridium ventricosum C. G. Albertus 1933-5-29 s.n. Butte 0.5 mile N. of Wiek - Chico Comment
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  CHSC96326  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. On steep east-facing bank between edge of meadow and upper forest. 1082 Comment
  CHSC84630  Genista monspessulana A. Rutherford 2002-4-30 4 Butte Paradise Lake, Lucretia Road. Comment
  JEPS118597  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Oroville 7.5; quad. Comment
  CHSC38453  Geranium carolinianum Vernon Oswald 1983-4-20 352 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.8 mi e of the power lines. 182 Comment
  CHSC3968  Geranium carolinianum J. Senter 1967-4-10 18 Butte Located 200 yds. S. E. slope ca. 60 yards from Honeyrun Road. 76 Comment
  CDA38823  Geranium dissectum L. Ahart 2012-4-3 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of the 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. Comment
  CHSC62112  Geranium dissectum B. Castro 1987-5-28 127 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  CDA4657  Geranium dissectum T. C. Fuller 1962-5-17 8704 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC39648  Geranium molle Lowell Ahart 1983-4-10 3926 Butte On steep sidehill, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 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
  CHSC43048  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of creek. 1097 Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. 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
  CHSC2482  Gilia tricolor W. Fitzwater 1958-4-3 Butte Oroville plains. Comment
  UC880189  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CAS-BOT-BC266583  Githopsis pulchella A. A. Heller 1937-5-31 s.n. Butte Just W of Jarboe Pass on the Feather River Highway about 20 miles from Oroville 609 Comment
  CHSC185  Githopsis pulchella subsp. campestris M. Roberson 1956-4-9 Butte Near Paradise along Skyway. 548 Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10464591  Githopsis specularioides Watts 1974-4-30 Watts 29 Butte About 15 miles northeast of Chico on Cohasset road Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 Comment
  CHSC63707  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte On the bottom of a large drying pond, on the south side of the shooting area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  CHSC39631  Glyceria occidentalis Lowell Ahart 1983-4-18 3936 Butte On the bottom of rice field, about 2 1/4 miles north and 1/2 mile east of Honcut, Peter Ahart Ranch. Also, in a vernal pool north of Ahart home. 50 Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  CAS-BOT-BC302478  Gnaphalium palustre Lowell Ahart 1988-7-24 6126 Butte At the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road 731 Comment
  JEPS87529  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  POM168292  Goodyera oblongifolia Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC48989  Gratiola ebracteata Vernon Oswald 1987-8-10 3200 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  HSC23332  Grindelia hirsutula B. Wilson 1968-5-3 185 Butte On Skyway, 2 mi. W of Paradise, N side of the road Comment
  CHSC62095  Grindelia hirsutula var. davyi L. P. Janeway 1993-8-7 4507 Butte Plumas National Forest. Along Road 21N25A at southwestern end of Watson Ridge; ca 2 mi east of Bald Rock Dome. Along edges of dirt road. 1082 Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle 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
  UCR219266  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  JEPS119728  Gymnocladus dioicus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC302418  Hazardia whitneyi M. S. Taylor; J. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd (Ponderosa Way on some maps) 7.5 mi n of Concow Rd, 1 mi se of Sawmill Peak, little south of turnoff to Sawmill Peak lookout 944 Comment
  CHSC28541  Hazardia whitneyi M. S. Taylor; J. D. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd, near Sawmill Peak, ca. 9.2 mi n of its jct with Concow Rd, ca. 2 mi e of Magalia. 944 Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  CHSC30662  Helianthus bolanderi M. S. Taylor 1978-9-8 1876 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CAS-BOT-BC134034  Heliotropium M. S. Taylor 1975-10-3 943 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico 36 Comment
  CHSC28423  Heliotropium europaeum M. S. Taylor 1979-10-2 2212 Butte On sandbar in Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CHSC381  Hemizonella minima B. Richardson 1929-5-20 Butte Cohasset. Comment
  CHSC66837  Hemizonia congesta subsp. luzulifolia Vernon H. Oswald 1996-8-29 8247 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. (Collected at the northeast corner of Tract 5, Sanctuary II). 32 Comment
  CAS-BOT-BC310133  Hesperevax acaulis Lowell Ahart 1979-4-17 s.n. Butte 2 miles north-west of Bangor. Hill-side ca. 1/4 mile north of Avacado Ave. 150 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, 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
  POM36296  Hesperevax caulescens C. C. Bruce 1897-06 2112 Butte Fields Comment
  CHSC41234  Hesperolinon disjunctum J. D. Jokerst 1985-5-24 2028 Butte In my back yard, Cherokee area, Campbell Flat, east of Table Mt. Comment
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Dec 22 2020
  CHSC116996  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  SEINET10493822  Hesperolinon micranthum Lowell Ahart 1985-6-30 Ahart 5085 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC101829  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  JEPS116097  Heterocodon rariflorum Lowell Ahart 2009-5-15 15699 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  JEPS117615  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  CHSC45192  Heteromeles arbutifolia Lowell Ahart 1975-6-19 791 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC114259  Heteromeles arbutifolia Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC6159  Heterotheca grandiflora J. Wheeler 1968-2-15 281 Butte Southern Pacific Railroad embankment at Coal Canyon. 228 Comment
  CHSC66851  Heterotheca oregona var. compacta Vernon H. Oswald 1996-9-30 8289 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. On the W side of the farm road between Camp 2 East and Camp 2 West in The Nature Conservancy easement area, near the Riparian Sanctuary. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CAS-BOT-BC310907  Heterotheca villosa Peter H. Raven 1954-4-17 6613 Butte Along Feather River, Oroville Comment
  UC176201  Heuchera micrantha var. erubescens A. A. Heller 1913-6-7 10822 Butte West Branch of the North Fork of Feather River near Stirling; Feather River 914 Comment
  SEINET10480026  Hibiscus californicus Mary Susan Taylor 1978-9-8 Taylor 1900 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  UC1192274  Hibiscus lasiocarpos Malcolm A. Nobs and S. Galen Smith 1949-7-29 1090 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CHSC45685  Hieracium albiflorum Vernon Oswald 1983-7-6 812 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CHSC50820  Hieracium scouleri var. scouleri Lowell Ahart 1990-7-19 6572 Butte On the south side of the road, at the Forbestown Reservoir (dam), about 5 miles north-east of Forbestown. 457 Comment
  OBI69218  Hirschfeldia incana Kari Fisher 2000-10-7 5 Butte Lindo Channel, 100 ft from E First Street 82 Comment
  UC1562435 Image available Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte about 2 mi ne Forbestown (along the road to the Forbestown Reservoir) 822 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CAS-BOT-BC150115  Holodiscus microphyllus var. glabrescens H. F. Copeland 1928-8-14 398 Butte Near Jonesville. Between Jones Creek and Scotch-John Creek 1828 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1609263  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte near bridge of Biggs Princeton Road about 3 mi w Biggs (Cherokee Canal); Cherokee Canal 30 Comment
  CAS-BOT-BC285088  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-5-17 2311 Butte 1/2 mile south-east of Hurleton 600 Comment
  HSC92442  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 757 Butte Peter Ahart Ranch, about 1 1/2 mi. N and 1 mi. E of Honcut. 12 mi. S of Oroville. Comment
  CHSC4410  Hordeum murinum subsp. glaucum 1966-5-25 Butte Arcadian Ave. across from Ed.-Psy. Building, Chico. Vacant lot. Comment
  CHSC8218  Hordeum murinum subsp. leporinum Dave Isle 1969-3-21 260 Butte Just off the S. side of the road through Upper Bidwell Park about 50 yards W. of the entrance to the golf course (E. of Chico). 59 Comment
  JEPS94725  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 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
  CHSC1558  Horkelia tridentata P. Delaplane 1965-5-4 50 Butte Found at E end of Lake Concow on Concow Road. 1219 Comment
  CHSC24675  Horkelia tridentata S. Deaton 1976-4-14 19 Butte 20 ft w of Feather Falls trail and 3 mi n of Falls parking lot. 914 Comment
  UC860238  Horkelia tridentata subsp. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville Sierra Nevada 1676 Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CDA38353  Hydrocotyle umbellata L. Ahart 2000-9-2 8680 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  CAS-BOT-BC400828  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  CAS-BOT-BC400830  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC45900  Hypericum anagalloides Lowell Ahart 1977-6-3 1404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SD7538  Hypericum concinnum Mrs. R. M. Austin 1883-1 Butte Comment
  UC426919  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 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
  CHSC20491  Hypericum perforatum M. S. Taylor 1975-6-25 792 Butte Abundant along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CAS-BOT-BC401218  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  SEINET10532856  Ibicella lutea Mary Susan Taylor 1974-10-11 Taylor 328 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  SEINET10532857  Ibicella lutea Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5158 Butte T17N R1E nw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, just se of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CAS-BOT-BC508346  Ipheion Lowell Ahart 1988-3-8 5929 Butte Peter Ahart Ranch about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 38 Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 Comment
  SEINET10469753  Iris macrosiphon Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4289 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 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
  CHSC52482  Iris tenuissima Rob Lee 1975-5-4 13 -23 Butte Eldredge Drive, Paradise. 304 Comment
  CAS-BOT-BC69951  Isoetes bolanderi Vernon Oswald; Lowell Ahart 1987-7-1 3064 Butte Lily Pond located ca. 0.6 mi (air) w. of Butte Creek House and 0.25 mi. s. of Humbug Rd., ca. 2.75 mi. (air) se. of 1813 Comment
  SDSU1944  Isoetes bolanderi E. B. Copeland 1929-6-29 732 Butte Above Jonseville. 533 Comment
  CHSC46178  Isoetes howellii Lowell Ahart 1975-4-7 746 Butte 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-BC61872  Isoetes nuttallii Lowell Ahart 1979-4-17 s.n. Butte 2 mi. n.w. of Bangor, about 1/4 mile north of Avacado Ave. 150 Comment
  CHSC116710  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte On the very west edge of North Honcut creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC107576  Isolepis setacea Lowell Ahart 2011-8-19 17644 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  CHSC45588  Isolepis setacea M. S. Taylor 1981-5-6 3622 Butte W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. 1127 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC109653  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-19 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park raod, southeast part of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC70784  Jensia rammii B. Castro; L. Gehrung 1995-5-9 567 Butte Ca 4 air mi E of Oroville, ca 2.2 mi E of jcn of Oro-Quincy Hwy with Forbestown Rd, within 15 ft of S edge of Forbestown Rd. 426 Comment
  CHSC4568  Juncus C. Glascock 1965-1-27 197 Butte Along banks of OWID ditch ca. 20 yds downstream from the Meadowview Drive crossing. Ca. 2 mi. e of Oroville. 22 Comment
  SEINET10971326  Juncus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4204 a Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CDA5727  Juncus bufonius var. bufonius L. Ahart 2005-4-14 11719 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC54363  Juncus bufonius var. bufonius M. Bailey 1991-4-19 567 Butte Butte College campus. Within fenced area around Wallis Pond, along drainage to the w of the pond and e of Well #3. 85 Comment
  JEPS107944  Juncus bufonius var. bufonius Lowell Ahart 2005-5-2 11775 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
  JEPS114380  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 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
  UCSB45762  Juncus bufonius var. bufonius Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; 6 miles north on Derrick Road from Table Mt. Road Comment
  CHSC112937  Juncus bufonius var. congestus B. Castro 2012-5-29 1925 Butte Sacramento Valley. Between hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC71104  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte Graded north side of Evens Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC47540  Juncus capitatus Lowell Ahart 1980-5-4 2207 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
  JEPS103414  Juncus capitatus Lowell Ahart 2002-4-24 9535 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
  JEPS105998  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito 48 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  JEPS87455  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  JEPS120918  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the E side of Black Bart Road, about 3/4 road miles SW of the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  RSA0036992  Juncus cyperoides Lowell A. Ahart 2013-7-1 18820 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
  CDA2694  Juncus cyperoides G. D. Barbe, T. C. Fuller 1982-6-14 3675 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  SD192836  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, ca. 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, ca. 0.25 mile west of the Ponderosa Dam. 257 Comment
  JEPS115974  Juncus effusus var. exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC57155  Juncus hemiendytus var. hemiendytus L. P. Janeway; R. A. Schlising 1988-7-1 2913 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Bed of vernal pool. 2011 Comment
  SEINET10472446  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4294 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
  SEINET10472447  Juncus howellii Lowell Ahart 1983-9-17 Ahart 4427 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC42090  Juncus kelloggii Lowell Ahart 1980-5-13 2263 Butte Below a seep, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 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
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS119681  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17984 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC32374  Juncus occidentalis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-6-14 832 Butte Big Bald Rock, N of Oroville and E of Berry Creek. 914 Comment
  SBBG128058  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte N edge of a good forest rd, on the W edge of Know-nothing Crk, ca. 150 yards N of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  UC600813  Juncus parryi H. F. Copeland 1930-7-12 Butte above Butte Creek House; Jonesville Comment
  JEPS116053  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
  UCR246367  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Northern Sierra Nevada Highlands (n SNH), near parking lot for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock 1050 Comment
  CHSC78344  Juncus triformis Lowell Ahart 2000-6-27 8529 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  JEPS113853  Juncus triformis Lowell Ahart 2007-6-12 14075 Butte Seeps, about 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC47573  Juncus uncialis Lowell Ahart 1978-4-10 1626 Butte On the bottom of vernal pools and swales, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC116023  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  CHSC32129  Keckiella breviflora var. glabrisepala L. Ahart 1976-6-4 1136 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  NY790344  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada. Rocky slopes and fill along the Feather River ca. 2.9 miles south of the Plumas County line. 548.6 Comment
  CHSC97696  Kickxia elatine Lowell Ahart 2007-10-31 14519 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CHSC33693  Kumlienia hystricula L. Ahart 1981-4-29 2717 Butte Along edges of a small stream near Ponderosa Dam, near Forbestown. 500 Comment
  CHSC48823  Kumlienia hystricula Vernon Oswald 1985-4-1 1692 Butte Oroville-Quincy Rd. 0.8 mi s of Canyon Creek Bridge. On the edge of an intermittent stream. Comment
  CHSC52822  Kumlienia hystricula Leslie Steidl 1980-3-19 5 Butte Ca. 16.5 mi e of Oroville on e side of Lumpkin Rd. 150 yd upstream on McCabe Creek. 384 Comment
  CAS-BOT-BC340333  Kyhosia bolanderi H. F. Copeland 1920-8-1 191 Butte Jonesville 1219 Comment
  CHSC102741  Lactuca saligna Lowell Ahart 2009-8-3 16254 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10474762  Lagophylla glandulosa Mary Susan Taylor 1977-8-16 Taylor 1438 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 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
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  CHSC56754  Lasthenia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of junction of Bruce Road and Skyway. Comment
  UC472213  Lasthenia fremontii Francis Ramaley 1917-5-6 11216 Butte near Chico Comment
  CHSC44392  Lathyrus angulatus Lowell Ahart 1988-5-22 6006 Butte In a farmed field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CAS-BOT-BC213339  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  RSA424763  Lathyrus latifolius Aaron Liston, M. Blumler 1987-4-24 659 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC103706  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 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-BC321761  Layia fremontii C. C., Mrs. Bruce 1897-4-1 1845 Butte Little Chico Plains Comment
  UC179643  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte 12 mi n of Chico Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  CAS-BOT-BC274353  Leersia oryzoides Lowell Ahart 1977-8-14 1543 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA42926  Leersia oryzoides L. Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC49692  Lemna minuta Vernon Oswald 1987-3-20 2294 Butte West side of Hwy 99, 0.6 mi nw of Butte Creek. In a dredger pond. 67 Comment
  POM193392  Lemna trisulca E. B. Copeland 1930-6-18 404 Butte Jonesville 1550 Comment
  UCD106697  Lens culinaris P. B. Kennedy 1914-5-10 4774 Butte Plant Introduction Gardens, Chico. Comment
  CHSC106885  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  JEPS87615  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte about 1.5 mi n and 1 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 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
  CHSC35026  Lepidium strictum R. E. Preston 1982-3-27 210 Butte Center of dirt road; s border of State Shooting Area, ca. 2 mi s of Oroville Municipal Airport. 45 Comment
  CHSC58260  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte On the top of Oroville Dam, near the south side of the spillway on Oroville Dam. 274 Comment
  CDA32439  Leptochloa fascicularis L. Ahart 2005-12-11 12517 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 Comment
  UC1100307  Leptochloa fascicularis Herbert L. Mason 1945-9-19 12730 Butte nw Pennington; Gray Lodge Game Refuge Comment
  UC1132180  Leptochloa fascicularis H. S. Yates 1936-8-14 6126 Butte 3 mi nnw Nelson; Chico Quadrangle Comment
  RSA713010  Leptochloa fusca subsp. uninervia L. Ahart 2005-12-11 12517 Butte on 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
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  CHSC50677  Leptosiphon acicularis Lowell Ahart 1990-4-7 6432 Butte In a pasture field, about 3 miles north and 1 1/2 miles east of Honcut, about 10 miles south of Oroville. 45 Comment
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Jul 19 2018
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  UCSB63627  Leptosiphon bicolor Curtis, Lisa 1982-4-17 Butte no data 88 Comment
  CHSC36822  Leptosiphon bolanderi R. A. Schlising; J. D. Jokerst 1980-7-2 3813 Butte 0.75 mi SW of road crossing of Butte Creek. 658 Comment
  CHSC33250  Leptosiphon filipes R. A. Schlising; R. Banchero 1980-7-7 3852 Butte NE of village of Feather Falls, 0.5 mi N of Fall River Campground and bridge. Roadside. Comment
  CHSC33248  Leptosiphon harknessii R. A. Schlising; R. Banchero 1980-7-14 3901 Butte N end of Snag Lake in N part of county. Meadows. 1731 Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC38121  Lessingia nemaclada R. L. Ondricek-Fallscheer 1982-10-30 160 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 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
  JEPS108726  Lessingia nemaclada Lowell Ahart 2006-9-28 13362 Butte At the end of the dirt road, about 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 480 Comment
  JEPS20646  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  RSA754883  Lessingia nemaclada L. Ahart 2009-6-30 15965 Butte About 150 yards N of a small drainage, along the Guardian Rock Trail, about 150 yards SW of Pine Trail, about 1/2 air mile SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 399 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. Comment
  SEINET10454495  Ligusticum grayi Mary Susan Taylor 1978-7-18 Taylor 1679 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC27244  Ligustrum henryi P. Moyer 1972-5-7 193 Butte CSUC Campus. Front old L.S. Bldg. between bike path and bike parking. 60 Comment
  CAS-BOT-BC451600  Lilaea scilloides Lowell Ahart 1980-4-19 2091 Butte Peter Ahart Ranch, Honcut 50 Comment
  UC478546  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CHSC30287  Lilium pardalinum subsp. shastense M. S. Taylor; R. A. Schlising 1980-7-6 3069 Butte On side of Old Humboldt Rd, ca. 0.8 mi ne of Cherry Hill Campground. 1463 Comment
  CAS-BOT-BC508459  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC133049  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC62828  Limnanthes alba Ella Icard 1893-4-1 Butte Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC118035  Limnanthes alba subsp. alba Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 225 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  JEPS106505  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Chico. Meghdadi Property in SE Chico; about 0.5 km N of Doe Mill Road, about 0.5 km E of S end of Potter Road, and 0.25 km W of old stone fence. Comment
  RSA767488  Limnanthes douglasii L. Ahart 2010-6-9 16788 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
  UC971796  Limnanthes douglasii Herbert L. Mason 1941-4-6 12415 Butte hills w Cherokee Comment
  CHSC52409  Limnanthes douglasii subsp. rosea Rene T. Retuta 1978-4-18 18 Butte Ca 100 ft W of Broyles Rd, ca. 1500 ft W of hwy 99, 8.5 mi NW of Chico. 62 Comment
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  UCD116436  Limnanthes floccosa Jeff Dole 1988-3-26 s.n. Butte near junction of Bruce Road and Stilson Canyon Road. Comment
  CHSC67545  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3043 Butte Church site population N of Humboldt Rd., W of Bruce Rd., S of Hwy. 32. Comment
  UCD128331  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  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
  CHSC24786  Linanthus dichotomus C. E. Stopher 1976-4-13 17 Butte 2.4 km s of Forest Ranch. 579 Comment
  CHSC49844  Linanthus dichotomus Vernon Oswald 1990-4-4 4150 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC70835  Linanthus dichotomus Vernon Oswald 1998-4-12 8901 Butte Upper Bidwell Park (new addition), Pine Trail near the trailhead on Hwy. 32 opposite Santos Rd. between Chico and Forest Ranch. 452 Comment
  SEINET10496798  Linanthus filipes Mary Susan Taylor 1978-4-14 Taylor 1561 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  CHSC42966  Lindernia dubia var. anagallidea Lowell Ahart 1987-7-3 5780 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC33338  Linnaea borealis var. longiflora R. Banchero; R. Schlising 1980-6-23 263 Butte 1.6 mi SW of Sly Res., 1.8 mi N of the jct of Laporte Rd and 'Eagle Gulch Rd. 1066 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  UC109513  Linum lewisii T. S. Brandegee 1902-6-28 Butte Jonesville Comment
  UC398929  Linum lewisii E. B. Copeland 1929-7-17 379 Butte above Jonesville 2000 Comment
  SEINET9797295 Image available Lipocarpha aristulata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  SEINET9782028 Image available Lipocarpha occidentalis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  RSA712647  Lithocarpus densiflorus var. densiflorus L. P. Janeway 2005-7-17 8499 Butte Northern High Sierra Nevada. West side near top of ridge on east side of Lockerman Creek, 0.5 km northeast of confluence of Lockerman Creek at Camp Creek. 1076 Comment
  SEINET10483000  Lithophragma Mary Susan Taylor 1981-5-7 Taylor 3635 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
  CHSC87452  Lithophragma bolanderi R. D. Fischer 2004-3-20 86 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found in north running ravine on the Guardian Trail located below the bluffs of the Disk Golf Course. 396 Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  SFV10394  Lithophragma bolanderi M. L. Vincent 1965-4-16 627 Butte Pentz Road, 0.5 miles east of Pentz Road. Comment
  CHSC48896  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-5-14 2397 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  SBBG40411  Lithophragma parviflorum J. Ingram 1960-4-6 506 Butte below Pentz Rd, ca. 1 mi N of jct with Nelson Bar Rd, S of Paradise Comment
  SEINET10483079  Lithophragma trifoliatum Mary Susan Taylor 1980-4-6 Taylor 2435 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC29099  Lithospermum californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2507 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  RSA718337  Lithospermum californicum L. Ahart 2006-6-9 12641 Butte 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. 535 Comment
  SFV3124  Lithospermum californicum M. L. Vincent 1962-4-20 219 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  CHSC31716  Lolium perenne L. Ahart 1972-5-8 104 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC8241  Lolium temulentum J. G. Moore 1969-5-7 38 Butte Cohasset Rd., 3 mi. e of Rock Creek Rd. on s side of road. 106 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On 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. 173 Comment
  JEPS16101  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  UCD150871  Lomatium caruifolium var. denticulatum James D. Jokerst 1980-5-12 650 Butte east of the Chioc Muni Airport and Cohasset Highway. 91 Comment
  CHSC4048  Lomatium dasycarpum subsp. tomentosum Ann Dolder 1967-4-26 Butte Ca. 1000 yards e of Salmon hole near rock cliff, Bidwell Park, Chico. 76 Comment
  JEPS119608  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  JEPS127062  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  CHSC11859  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  SD5000  Lonicera conjugialis E. B. Copeland 1930-6-27 Butte Jonesville 1550 Comment
  CAS-BOT-BC240445  Lonicera hispidula Lowell Ahart 1983-6-21 4066 Butte Along Bloomer Hill Road. Along a poor road near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC115689  Lonicera hispidula Emily Meigs Doe 2015-5-12 28 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.75 mi. (air) NW of Forbestown. Roadside of Rd. 19N19, ap-proximately 750 ft. NE of its junction with Ponderosa Way. 746 Comment
  CHSC2405  Lonicera hispidula R. Carter 1964-6-15 129 Butte Feather R. Canyon, 3/4 mi. E of Pulga turn-off where Bear Ranch Rd. leaves Hwy. 40A. 609 Comment
  CHSC101834  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail. 381 Comment
  CHSC196  Lonicera interrupta M. Roberson 1956-5-28 Butte Near Paradise along Skyway 548 Comment
  CHSC99544  Lonicera interrupta L. P. Janeway 2008-5-15 9409 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  UC600684  Lonicera involucrata var. involucrata H. F. Copeland 1920-7-29 466 Butte Jonesville Comment
  JEPS97342  Lotus corniculatus Lowell Ahart 1995-8-19 7612 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  RSA126007  Lotus grandiflorus var. macranthus E. K. Balls 1957-5-22 22513 Butte N. fork Feather River, above Camp Rogers, on trail to Bucks Lake. 655 Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 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
  SEINET5736943 Image available Lotus micranthus Lowell Ahart 1985-1 5033 Butte Lake Oroville, 0.125 mile E of Enterprise Launch Area and about 0.5 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  UC1129111  Lotus oblongifolius var. oblongifolius P. L. Johannsen 1936-7-17 943 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET3694432  Lotus oblongifolius var. torreyi E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET10871197  Lotus purshianus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7022 Butte 2.6 mi w of paradise on chico road. 610 Comment
  SFV1841  Lotus purshianus M. L. Vincent 1960-7-16 104 Butte Sierra Nevada Paradise. Lot south of 5330 Harrison Road. 515 Comment
  UC726319  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  SEINET10874145  Lotus strigosus Lowell Ahart 1985-5-31 Ahart 5034 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  UC204727  Lotus wrangelianus A. A. Heller 1914-5-28 11238 Butte 8 mi n Oroville Comment
  CHSC42708  Ludwigia palustris Lowell Ahart 1987-6-9 5732 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
  UCD107092  Ludwigia palustris P. B. Kennedy 9-10 Aug 1921 s.n. Butte Experiment Station, Biggs. Comment
  JEPS50784  Lupinus albicaulis Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9278 Butte abut 1 mi NE of Jarbo Gap (along Feather River Hwy. (now Calif. 70)) 640 Comment
  UCR77879  Lupinus albicaulis J. T. Howell 1955-6-15 30516 Butte Sierra Nevada Mtns, Yankee Hill. 518 Comment
  UC392197  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  CHSC55698  Lupinus albifrons Ben Cunningham 1991-4-20 Butte Ca. .7 mi s of Lunt road and 4 ft e of Highway 70, 65 mi s of Greenville. 457 Comment
  SEINET10488406  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20n,r6e,sec.31 se 1/4, nw 1/4. Forbestown quad. E side of lumpkin-laporte Road, 1 mile n of enterprise bridge over s fork feather river, ca 10 air miles E of oroville. Granitic soils. Assoc.; Diplacus grandiflorus, lupinus Stiversii, trifolium ciliolatum 457 Comment
  CHSC62830  Lupinus bicolor Ella Icard 1893-1-1 Butte Comment
  UC726014  Lupinus bicolor A. A. Heller 1940-4-28 15562 Butte opposite the golf links e Chico; e of Chico Comment
  UCD107231  Lupinus bicolor A. A. Heller 1915-4-12 11817 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  CHSC109180  Lupinus bicolor var. tridentatus Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 Butte On the north side of Big Chico Creek, south side of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10452081  Lupinus formosus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4076 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  SEINET10485384 Image available Lupinus formosus var. robustus A. Arthur Heller 1940-4-28 Heller 15561 Butte Along the roadside between the radio station and hooker oak, E of Chico. Comment
  CHSC97022  Lupinus grayi L. P. Janeway 2007-7-23 9122 Butte Northern High Sierra Nevada. Plumas National Forest; south-facing road cutbank along Road 21N92, on eastern Watson Ridge 1.8 km north-northwest of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1201 Comment
  POM27146  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2455 Butte Paradise. Comment
  CHSC87796  Lupinus latifolius var. columbianus Paul Maslin 2004-4-6 12 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC78077  Lupinus microcarpus var. densiflorus Caleb E. Casey 1999-5-13 Butte Bear Hole, Upper Bidwell Park. Found on South side of Chico creek. 121 Comment
  UC1594541  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC90365  Lupinus nanus Thomas E. Lewis 1978-3-29 7 Butte Ca. 200 m ne of Salmon Hole, ca. 5.5 km from the start of Upper Bidwell Park Rd, Chico. 230 Comment
  UCD109250  Lupinus nanus M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  RSA724911  Lupinus nanus subsp. nanus L. P. Janeway 2006-5-24 8607 Butte Northern Sierra Nevada Foothills, near the eastern shores of Lake Wyandotte, 7 air km ESE of Oroville Dam. 422 Comment
  CAS-BOT-BC322113  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  CHSC104791  Lupinus nanus var. vallicola L. P. Janeway 2010-6-19 10024 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 Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC941  Lupinus nanus var. vallicola 1933-3-5 Butte Bidwell Park. 60 Comment
  JEPS117147  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 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
  RSA695519  Lupinus pachylobus L. Ahart 2003-4-8 10050 Butte About 1/8 mi NW of the iron gate and fence, NW of Cherokee Rd, North Table mountain, about 7 mi (air) N of Oroville. 327 Comment
  UC75250  Lupinus pachylobus Copeland 1903-4-10 3043 Butte Chico Comment
  JEPS117287  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
  SEINET10452666  Lupinus stiversii Mary Susan Taylor 1980-4-18 Taylor 2529 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SEINET10452667  Lupinus stiversii Mary Susan Taylor 1981-5-5 Taylor 3596 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  SEINET11787630  Luzula campestris L. Ahart, Ahart, P. 1984-1 4740 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC71658  Luzula cascadensis Vernon H. Oswald; Lowell Ahart 1998-8-11 9468 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  CHSC32366  Luzula macrantha J. D. Jokerst 1980-4-18 607 Butte 1.0 mi S of the town of Nimshew where to road makes a sharp turn to the W. 701 Comment
  CHSC98955  Luzula macrantha Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  UC1586522  Luzula parviflora Lowell Ahart 1991-8-25 6705 Butte just s Jordan Creek (Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.), e of Oroville-Quincy Hwy., ca 5.75 mi (air) ne of Brush Creek); just s of Jordan Creek 1082 Comment
  UC1609080  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC80018  Lythrum hyssopifolia L. P. Janeway; B. Castro 1999-6-4 6453 Butte Sacramento Valley. East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. 30 Comment
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  UC73417  Lythrum hyssopifolia Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley Comment
  RSA0015861  Lythrum hyssopifolia L. S. Rose 1967-6-11 67102 Butte Oroville. 52 Comment
  UCD149879  Lythrum hyssopifolia V. S. 1969-9-18 s.n. Butte Gray Lodge Wildlife Area, Field 23. Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC54342  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  JEPS120857  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  CHSC51856  Madia elegans subsp. vernalis L. P. Janeway 1988-6-5 2727 Butte Cyn of Chico Cr ca 3/4 mi NE of the end of Upper Park Rd. 259 Comment
  CAS-BOT-BC344311  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CHSC65540  Madia exigua L. P. Janeway 1995-6-19 4796 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC46240  Maianthemum racemosum Pauleen Broyles 1987-7-19 1081 Butte Ca 7.2 km (air) NE of Inskip. 1770 Comment
  SEINET12050643  Maianthemum racemosum subsp. amplexicaule Unknown 1986-1 993 Butte ca 0.3 mi N of road jct below Humboldt Peak, extreme N of county, near Scotts John Creek Comment
  CAS-BOT-BC347378  Malacothrix floccifera Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  JEPS87518  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  SEINET10872007  Malacothrix floccifera Lowell Ahart 1984-6-8 Ahart 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC38548  Malva neglecta Vernon Oswald 1983-5-11 475 Butte Upper Bidwell Park, Chico, along the w margin of the Golf Course s of the footbridge. 91 Comment
  CHSC63257  Malva parviflora L. Ahart 1994-3-30 7277 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  SEINET3441872  Malva parviflora Unknown 2003-5-9 10122 Butte Dobbins, Dobbins, about 3 air miles northeast, about 0.5 miles north of Fountain Hill Road, about 3 miles south of Oregon Hill Road, west side of Fountain Hill road 20 Comment
  SEINET10448087  Marah fabacea Mary Susan Taylor 1973-1 Taylor 57 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC24463  Marah fabacea var. agrestis M. S. Taylor 1976-2-12 986 Butte Ca. 50 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  JEPS115824  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east 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
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  SEINET10839148  Matricaria occidentalis Mary Susan Taylor 1982-4-28 Taylor 4359 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET12091616  Meconella californica S. T. Heaston 1982-1 6 Butte SE of Chico, ca 6.5 mi from jct of Hwy 99 and Skyway off Humbug Rd. on rocky NE slope, ca 600 ft 122 Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  CHSC3518  Medicago arabica John Francis 1966-4-16 110 Butte 1.5 miles E. of covered bridge (Honey Run). Comment
  SEINET10452580  Medicago hispida Mary Susan Taylor 1975-4-25 Taylor 504 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 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
  UC204541  Medicago polymorpha A. A. Heller 1914-3-7 11186 Butte along a small stream in olive orchard 8 mi n Oroville Comment
  UCD106751  Medicago rigidula P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC96877  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  CAS-BOT-BC269382  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  HSC23498  Melica californica S. Armantrout 1969-5-2 24 Butte Cohasset Hwy., 0.5 mi. W of Rock Creek Rd. Comment
  CHSC49558  Melica fugax Vernon Oswald; Lowell Ahart 1987-5-14 2399 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. In forest on the w side of the creek. 1780 Comment
  CHSC46303  Melica geyeri Vernon Oswald 1989-5-28 3787 Butte Logging road paralleling the w side of Butte Creek, 3.1 mi s of Humboldt Rd (near Butte Meadows). Bordering the road. 1292 Comment
  CAS-BOT-BC281303  Melica harfordii Lowell Ahart 1987-7-8 5798 Butte Along Big Bar Mountain Rd, about 3 miles SW of Coyote Gap, SE of Pulga 1280 Comment
  CAS-BOT-BC262505  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  JEPS87139  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte ca. 2 (air) mi. n. Oroville (w. side of small stream, e. of Cherokee Rd., Lake Oroville Recreation Area); Lake Oroville Recreation Area 91 Comment
  RSA712996  Melica torreyana L. Ahart 2006-5-19 12632 Butte 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. On the west side of the dirt road 406 Comment
  CHSC3402  Melilotus indicus Alice L. Stoll 1966-5-7 158 Butte Bare Hole, Upper Bidwell Park, 7.4 miles from First and Main Streets. Comment
  HSC96978  Melilotus indicus L. Ahart 2005-5-2 11772 Butte E side of the Sacramento River, NW of Parrott Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 mi. SW of Chico. 26 Comment
  CHSC50325  Melilotus officinalis Vernon Oswald 1990-5-29 4259 Butte Hwy 99-Hwy 32 interchange in Chico. 65 Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CDA4211  Melilotus officinalis L. Ahart 2001-6-13 8817 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC25294  Melissa officinalis M. S. Taylor 1977-7-15 1415 Butte On n side of Butte Creek directly beneath Covered Bridge, ca. 8 mi e of Chico. 243 Comment
  CHSC102616  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte Along streams, 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
  CHSC42789  Mentha canadensis L. P. Janeway; Patty Costello 1987-9-5 2574 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 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
  CHSC76341  Mertensia ciliata L. P. Janeway 1999-7-17 6507 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CAS-BOT-BC428455  Micranthes aprica Lowell Ahart; Vern Oswald 1987-6-10 5747 Butte At Sunflower Flat, about 2 1/4 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir 1981 Comment
  CHSC100807  Micranthes aprica R. A. Schlising; L. Janeway 1988-7-1 4550 Butte N part of county: end of road above Summit Lake, on Snow Mountain. Comment
  CHSC10754  Micranthes californica Lowell Ahart 1965-3-1 Butte Ahart Ranch, Honcut. 42 Comment
  CHSC7051  Micranthes integrifolia J. G. Moore 1969-2-25 112 Butte In Upper Bidwell Park 200 yds. w of rifle range and 100 yds. n of golf course entrance. 67 Comment
  CHSC48908  Micranthes odontoloma Vernon Oswald 1987-7-29 3165 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the se/S6. 1752 Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  UCD146243  Micropus californicus Daniel S. Park; J. P. Zabala 2010-4-10 12 Butte Table Mt. Cherokee Rd. 351 Comment
  CHSC101220  Micropus californicus var. californicus G. F. Hrusa; R. Gross, L. Houser 2008-4-11 17094 Butte Open, chaparral slopes with woodland on N faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace. 396 Comment
  HSC32400  Micropus californicus var. californicus Gary S. Lester 1974-4-20 102 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  UCSB46179  Micropus californicus var. californicus Reisentz, Paul 1979-5-13 Butte 4 miles SE on Cherokee Road from Highway 70 Comment
  CHSC40485  Microseris acuminata Lowell Ahart 1985-4-21 4879 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CAS-BOT-BC348882  Microseris douglasii subsp. douglasii A. A. Heller 1914-4-14 11291 Butte 8 miles north of Oroville Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  CHSC31606  Microseris douglasii subsp. tenella L. Ahart 1979-5-11 1866 Butte Peter Ahart Ranch, Honcut. In fields. 50 Comment
  CHSC32660  Microsteris gracilis M. S. Taylor; L. Hanson 1981-3-16 3412 Butte E side of Truex Rd, ca 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC34992  Microsteris gracilis R. A. Schlising 1980-6-10 3664 Butte Along Humboldt Road, 1.9 mi NE of jct with Highway 32 at Lomo. Comment
  UCR190687  Mimulus 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
  SEINET10570191  Mimulus bicolor Mary Susan Taylor 1980-4-27 Taylor 2551 Butte T23N R3E west center border sec 26. Paradise quad. On N side of Ponderosa Way Road, ca. 0.5 mi E of Nimshew Rd, ca. 1 mi S of Nimshew; in open vernally dry embankment. With J.D. Jokerst. 610 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
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  CDA13864  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-7 13722 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS34388  Mimulus glaucescens Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8864 Butte 0.75 mi s Pulga (above side road off U.S. highway 40, just before bridge across Feather River, n base of grade over Jarbo Gap); Canyon of North Fork of Feather River 426 Comment
  RSA454333  Mimulus glaucescens M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  UC176073  Mimulus glaucescens A. A. Heller 1912-5-23 10755 Butte n Oroville (Table Mountain Olive Ranch) Comment
  UCSB63616  Mimulus glaucescens Griffiths, Troy 1988-3-15 Butte Vic. Salmon Hole; ca. 5 mi e of Chico Municipal Golf Course; Chico 121 Comment
  UC886185  Mimulus guttatus A. A. Heller 1915-5-4 11868 Butte 8 mi n Oroville Comment
  CDA41791  Mimulus guttatus T. C. Fuller 1958-4-15 4796 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  UC660023  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC44793  Mimulus moschatus R. Banchero 1980-6-19 254 Butte Along Concow Rd 1.3 mi N of its jct with Hwy 70, 0.3 mi N of the town of Concow. 518 Comment
  RSA0116252  Mimulus moschatus Lowell A. Ahart 2014-7-2 19538 Butte On the south 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. 1260 Comment
  UCD122798  Mimulus moschatus L. E. Hazeltine 1916-7-28 s.n. Butte Chico. Comment
  RSA0116256  Mimulus primuloides var. primuloides Lowell A. Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  UC103748  Mimulus torreyi Mrs. R. M. Austin July 1896 162 Butte Colby Comment
  RSA80101  Mimulus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road. Comment
  JEPS110187  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 333 Comment
  CHSC93353  Minuartia cismontana Lowell Ahart 2006-5-3 12567 Butte On basalt outcrops, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 392 Comment
  CHSC93360  Minuartia cismontana Lowell Ahart 2006-4-28 12548 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 316 Comment
  JEPS110247  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  CAS-BOT-BC388609  Minuartia douglasii John Thomas Howell 1962-6-16 37556 Butte Magalia 731 Comment
  RSA304506  Minuartia douglasii Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3300 Butte North Table Mountain, 5 airmiles N of Oroville; flat-topped basalt butte, near parking area. 396 Comment
  CAS-BOT-BC433046  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC43938  Modiola caroliniana Vernon Oswald 1988-4-5 3268 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) located in southeast Chico. In the southeast corner of the greenhouse complex. 70 Comment
  CHSC46351  Moehringia macrophylla Lowell Ahart 1989-5-29 6322 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC30744  Mollugo verticillata M. S. Taylor 1980-7-6 3052 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. In drainage of Rock Creek. 67 Comment
  CHSC31521  Mollugo verticillata L. Ahart 1972-5-8 98 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42101  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC435070  Mollugo verticillata Lowell Ahart 1984-8-19 4787 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville 40 Comment
  RSA722574  Mollugo verticillata R. R. Halse 2006-8-2 6979 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC196294  Monardella odoratissima subsp. glauca A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  SEINET10498944  Monardella odoratissima subsp. glauca Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4083 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC26689  Monardella odoratissima subsp. pallida M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1489 Butte At Humboldt Summit, at Butte-Tehama county line. In forest on Butte side. 2133 Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  JEPS113188  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  UC1609442  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SD130983  Monochoria vaginalis Lowell Ahart 1981-9-19 3193 Butte Butte County Rice Experiment Station 35 Comment
  CHSC46452  Monolepis nuttalliana V. Oswald; L. Ahart 1989-6-27 3833 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  JEPS102709  Montia diffusa Vernon H. Oswald and Lowell Ahart 2001-6-5 10047 Butte Bryant Ravine, near the trailhead to Feather Falls 749 Comment
  UC203629  Montia fontana A. A. Heller 1914-3-18 11209 Butte 8 mi n of Oroville Comment
  CHSC39886  Montia fontana subsp. chondrosperma M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5405 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC50110  Montia linearis Vernon H. Oswald 1990-5-9 4196 Butte Colby Creek Meadow on the north side of Humboldt Rd, ca. 1 mile west of Jonesville. Occasional on moist, sloping meadow on the west side of Colby Creek, slightly north of the mouth of Willow Creek. 1475 Comment
  UC1562481  Montia linearis Vernon H. Oswald and Lowell Ahart 1990-5-29 4270 Butte between the Skyway and Philbrook Road (Chaparral Guard Station on Humbug Road); Chaparral Guard Station 1536 Comment
  CDA13311  Montia parvifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13157 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS 23N60. Comment
  CHSC12406  Montia parvifolia Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  CHSC7114  Montia parvifolia Paul Kinnison 1969-5-6 11 Butte On Highway 70 e 200 yds. up Bear Creek where it hits the road. Just before the abandon tunnel. Comment
  SEINET10962338  Montia sibirica var. heterophylla Mary Susan Taylor 1977-7-15 Taylor 1402 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC38557  Morus alba Vernon Oswald 1983-5-4 430 Butte Upper Bidwell Park, Chico, beside the trail on the N side of Chico creek 500 ft W of the power lines. 91 Comment
  CAS-BOT-BC264287  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
  CHSC112724  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19222 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC47698  Muhlenbergia filiformis Lowell Ahart 1989-9-21 6395 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  JEPS120698  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  JEPS98309  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  SEINET256564 Image available Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Rexervoir about 2 miles south of Paradise. 503 Comment
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET10536209  Myosurus minimus Mary Susan Taylor 1975-4-18 Taylor 483 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  RSA0025076  Myriophyllum aquaticum L. P. Janeway, B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 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
  UCD138162  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  UC600778  Nama lobbii H. F. Copeland 1930-7-26 Butte Jonesville Comment
  CAS-BOT-BC515978  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 1750 Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CHSC39504  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  RSA755440  Nasturtium officinale L. Ahart 2009-5-23 15728 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC34987  Navarretia divaricata R. A. Schlising; R. Banchero 1980-7-11 3879 Butte Merrimac, in NE part of county. 1203 Comment
  SEINET10496820  Navarretia divaricata Lowell Ahart 1983-8-16 Ahart 4303 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  CHSC46295  Navarretia divaricata subsp. vividior Vernon Oswald 1989-5-16 3773 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 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
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch Comment
  CHSC91108  Navarretia heterandra Lowell Ahart 2005-5-28 11824 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  JEPS104308  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  JEPS107886  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  UC221749  Navarretia intertexta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2080 Butte near Chico Comment
  CHSC82415  Navarretia intertexta subsp. intertexta Lowell Ahart 2002-5-7 9627 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS107882  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 51 Comment
  UC392178  Navarretia leptalea subsp. leptalea E. B. Copeland 1929-7-29 Butte by lilypond near Butte Creek House; Jonesville, near Butte Creek House Comment
  CHSC45434  Navarretia leucocephala Lowell Ahart 1978-5-12 1714 Butte In a field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC38260  Navarretia leucocephala Thomas W. Nelson, Jane P. Nelson 1976-5-9 2454 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  POM65124  Navarretia leucocephala subsp. leucocephala Copeland 1903-5-15 3047 Butte Chico. Comment
  UCD48552  Navarretia nigelliformis Robert E. Preston 2004-5-25 2246 Butte Ca. 5 mi N of Oroville, at E side of substation. 53 Comment
Read comments
Feb 28 2007
  UC856892  Navarretia tagetina Lewis S. Rose 1939-6-5 39197 Butte Honcut 30 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
  UC606887  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big Chico Creek and Little Chico Creek); Sierra Nevada foothills, btw Big Chico Creek and Little Chic 609 Comment
  UC107272  Nemophila maculata E. Brooks Butte Forbestown Comment
  CHSC28965  Nemophila pedunculata J. D. Jokerst; M. S. Taylor 1980-2-23 449 Butte Edge of flat ridge top ca 1/4 mi NW of Neal Rd. 198 Comment
  CHSC39077  Nemophila pedunculata R. A. Schlising 1981-4-11 4023 Butte E side of Chico, between Highway 32 and Humboldt Road. 76 Comment
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile wewst of the Ponderosa Dam. 289 Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CAS-BOT-BC231528  Nicotiana glauca Lowell Ahart 1962-8-10 s.n. Butte Near Gridley 120 Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD18873  Odontostomum hartwegii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 182 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
  POM110462  Odontostomum hartwegii C. C. Bruce 1898-05 1838 Butte Unspecified. 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
  CHSC13881  Orobanche fasciculata Gregory Barnes 1969-4-16 7 Butte Table Mountain area. [JDJ note on specimen says 'Table Mt = 20N?. Section 10 not on Table Mt']. Comment
  CHSC48640  Orobanche fasciculata Vernon Oswald 1987-4-14 2324 Butte Garland Rd. 0.3 mi n of Doe Mill Rd. (ene of Forest Ranch). 524 Comment
  CHSC87568  Orobanche fasciculata R. D. Fischer 2004-4-20 141 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along southern end of Humboldt Trail, at edge of trail. 396 Comment
  JEPS126162  Orobanche vallicola Alison Colwell 2006-8-1 Butte Cal State Chico Campus, along creek outside Holt Hall. Comment
  CHSC69043  Orthilia secunda Lowell Ahart 1997-8-1 7780 Butte 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
  RSA325143  Orthocarpus attenuatus M. S. Taylor, Vernon H. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 airmiles NE of Chico. Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' Comment
  SEINET10549735  Orthocarpus pusillus Mary Susan Taylor 1981-5-6 Taylor 3623 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC42636  Osmorhiza chilensis Vernon Oswald 1984-6-11 1272 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC46495  Oxalis corniculata Lowell Ahart 1975-5-12 762 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. 51 Comment
  CHSC43298  Oxalis laxa Lowell Ahart 1979-4-6 1822 Butte On the west side of North Honcut Creek, about 3/4 mile north-east of the bridge across North Honcut Creek and Avacado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC3541  Oxalis pes-caprae John Francis 1966-3-19 69 Butte On hillside S. of covered bridge, Honey Run. Comment
  SEINET3441866  Oxalis radicosa Unknown 2003-4-30 10119 Butte Oroville, Oroville, about 5.5 air miles southwest, about 3/5 of a miles west of Pacific Heights Road, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area 30 Comment
  CHSC27249  Oxalis rubra P. Moyer 1972-3-18 151 Butte CSUC campus. 2nd and Hazel, lawn. Comment
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC334337  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  CAS-BOT-BC316890  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1954-5-31 54085 Butte Feather River Canyon, near Pulga 396 Comment
  CHSC42458  Packera eurycephala var. lewisrosei Lowell Ahart 1987-5-9 5588 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC98571  Packera eurycephala var. lewisrosei L. P. Janeway; B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  CAS-BOT-BC10501  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  CDA32009  Panicum acuminatum var. acuminatum L. Ahart 2009-6-3 15832 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  POM181470  Panicum capillare H. F. Copeland 1923-8-9 848 Butte Near Chico Comment
  CHSC1208  Papaver californicum V. Holt 1933-5-1 Butte Duham. 46 Comment
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Dec 20 2007
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  CHSC112455  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  UC177007  Parvisedum pumilum Mrs. R. M. Austin Butte Butte County Comment
  CHSC102713  Paspalum dilatatum Lowell Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  UCD88967  Paspalum distichum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC3008  Paulownia tomentosa Carl Pejsa 1958-4-19 88 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC202815  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville 975 Comment
  CHSC63242  Pectocarya pusilla Lowell Ahart 1994-4-22 7285 Butte In a small meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  JEPS119983  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC32814  Pedicularis densiflora W. Michael Foster 1981-4-13 1 Butte Ca. 200 ft ne of Cherokee rd and ca. 10 mi n of Oroville. 304 Comment
  CHSC94911  Pedicularis densiflora L. P. Janeway 2006-5-28 8644 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. 1248 Comment
  CHSC30369  Pellaea andromedifolia J. D. Jokerst 1979-2-12 1127 Butte Top of North Table Mt., cliffs west of Phantom Falls. Comment
  CHSC31462  Pellaea andromedifolia M. S. Taylor 1981-1-5 3370 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 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
  SEINET10920583 Image available Pellaea andromedifolia Lowell Ahart 2007-5-29 Ahart 13941 Butte Near the SE edge of Bald Rock Dome, on the W side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 mi by the trail from the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 637 Comment
  SEINET10529790  Pellaea andromedifolia Mary Susan Taylor 1981-1-5 Taylor 3370 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC40285  Pellaea brachyptera Lowell Ahart 1985-6-17 5054 Butte Lumpdin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC114692  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Roadside. Comment
  RSA285683  Penstemon azureus subsp. angustissimus D. C. Michener 1980-8-4 3776 Butte Sierra Nevada. Talus slopes long CA 70 in open Pinus, chaparral transition ca 4 miles south of Pulga. Feather River Canyon Comment
  SEINET10547579  Penstemon azureus var. azureus Lowell Ahart 1985-5-15 Ahart 4988 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC27977  Penstemon deustus var. suffrutescens M. S. Taylor 1978-7-18 1710 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  CHSC44699  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 291 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CHSC44710  Penstemon laetus var. leptosepalus R. Banchero 1980-6-6 204 Butte The southern jct of Bald Rock Rd and Zink Rd. 705 Comment
  NY604517  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25693 Butte Route 24, along Feather River, above Pulga 457.2 Comment
  CHSC105203  Penstemon neotericus B. Castro; L. P. Janeway 1999-8-1 1023 Butte NE slope of Snow Mtn, ca 0.3 mi NNE of top, and ca 0.5 mi SE of Summit Lake. 2017 Comment
  CHSC28011  Penstemon neotericus M. S. Taylor 1978-7-21 1800 Butte Ca. 1 mi n of Lake Madrone, on e side of Oroville-Quincy Hwy. 609 Comment
  CHSC49034  Penstemon neotericus Vernon Oswald 1984-7-5 1346 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of Hwy 32. 1380 Comment
  SEINET10548066  Penstemon neotericus Mary Susan Taylor 1978-7-21 Taylor 1800 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC107594  Penstemon newberryi var. newberryi Lowell Ahart 2011-7-9 17577 Butte Northwest part of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  LA209542  Penstemon newberryi var. newberryi E. B. Copeland; 1930-7-6 458 Butte above Jonesville 1900.0 Comment
  UC1560380  Penstemon newberryi var. newberryi E. Joyal and D. Mehlman 1988-7-3 1310 Butte Humboldt summit, E side Lsassen National Forest 2100 Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CHSC42835  Penstemon personatus L. P. Janeway 1987-7-4 2434 Butte Along the Concow Rd ca 1 mi N of Bald Mtn (towards Jones Mdw). 1786 Comment
  CHSC39239  Pentagramma triangularis M. S. Taylor; K. Tharp 1983-3-12 5238 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC39800  Pentagramma triangularis Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CAS-BOT-BC77083  Pentagramma triangularis subsp. triangularis Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 Comment
  UC1532345  Perideridia bacigalupii Vernon Oswald 1986-7-10 2186 Butte 1.8 mi. s. Forbestown Rd. (Robinson Mill Rd.) 640 Comment
  CHSC37275  Perideridia lemmonii L. Ahart 1982-8-19 3744 Butte Along sides of North Honcut Creek, in a protected shady place, Peter Ahart Ranch, ca. 1 mile n and 3 mi e of Honcut. 50 Comment
  CHSC40231  Perideridia lemmonii Vernon Oswald 1985-7-15 1904 Butte Concow Meadow Located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  JEPS117536  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, 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 Philbrood Reservoir 1917 Comment
  CDA42946  Persicaria hydropiper L. Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CHSC108123  Persicaria punctata Lowell Ahart 2011-10-29 17724 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  SEINET11933238  Petrorhagia dubia Unknown 1984-1 14 Butte ca 0.75 mi NE of Centinnial and Manzanita avenues 70 Comment
  UC107479  Phacelia cicutaria Mrs. R. M. Austin May 1883 s.n. Butte Iron Canyon, above Chico Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  CHSC109089  Phacelia egena Lowell Ahart 2012-4-20 17891 Butte Around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, west and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 215 Comment
  CHSC27787  Phacelia egena Michael Snider 1978-4-8 19 Butte Ca 120 ft s of Rock Creek. 213 Comment
  CHSC50050  Phacelia egena Lowell Ahart 1990-4-8 6438 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS119538  Phacelia egena Lowell Ahart 2012-4-20 17891 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, west and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC1594635  Phacelia egena Lowell Ahart 1992-9-20 6922 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below high water line of lake, 3/4 mi sw of Rocky Point); Lake Oroville 243 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
  CHSC39106  Phacelia mutabilis R. A. Schlising; K. Tarp 1983-8-12 4440 Butte N part of county, E of Philbrook Reservoir on road to Carr Mine. 1981 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
  CHSC38467  Phacelia tanacetifolia Vernon Oswald 1983-3-14 181 .5 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC730  Phacelia tanacetifolia V. Holt 1935-3-30 Butte Chico Creek ridge. 304 Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  POM356936  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte 7 limes W. of Honcut 23 Comment
  JEPS87406  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1392744  Philadelphus lewisii R. F. Hoover 1968-5-29 11136 Butte Cohasset Road Comment
  UC880352  Phlox gracilis A. A. Heller 1915-6-27 12041 Butte Jonesville Sierra Nevada 1676 Comment
  JEPS122446  Phlox speciosa L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. Quad: Forbestown 7.5'. Comment
  UCR143102  Phoradendron bolleanum subsp. densum H. F. Copeland 1928-4-3 1000 Butte Near Magalia 732 Comment
  LA209889  Phoradendron leucarpum subsp. tomentosum A. A. Heller; 1914-1-28 11157 Butte near Hog Springs, 6 mi E of Chico Comment
  CHSC85445  Phoradendron libocedri R. D. Fischer; Jenny Marr 2003-11-23 15 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  CHSC38542  Phoradendron serotinum subsp. macrophyllum Vernon Oswald 1983-4-24 362 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek ca. 300 ft. e of Parking Area H at Day Camp. 91 Comment
  RSA0118756  Phoradendron serotinum subsp. macrophyllum Lowell A. Ahart 2014-3-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 24 Comment
  CHSC36095  Phyllodoce breweri R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4328 Butte NE part of county, N of Philbrook Reservoir; SE of Snow Mt. Peak, on flanks of mountain. 2057 Comment
  CHSC34220  Physocarpus capitatus M. S. Taylor 1981-5-27 3805 Butte Along creek on Phillips property, 685 Wagstaff, Paradise. 579 Comment
  CDA23904  Phytolacca americana D. G. Kelch 2006-8-2 6 .347 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC102824  Phytolacca americana Lowell Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC32124  Pickeringia montana L. Ahart 1979-5-29 1909 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek, 2.5 mi ne of Paradise. 500 Comment
  UCSC009440  Picris echioides Lowell Ahart 1995-10-4 7677 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 37 Comment
  CHSC117401  Pilularia americana Lowell Ahart 2016-5-30 20882 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
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 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
  CHSC84953  Pinus jeffreyi Lowell Ahart 2003-10-17 10641 Butte In rock pile about 25 yards north of Humboldt Peak, about 1/2 mile east of Humboldt Summit, about 8 miles (air) northeast of Butte Meadows. 2154 Comment
  CAS-BOT-BC73149  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  SEINET10530763  Pinus lambertiana Mary Susan Taylor 1976-2-22 Taylor 999 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  CHSC3901  Pinus ponderosa R. Carter 1967-7-31 501 Butte Found ca. 17 mi. NE of Oroville on W side of Big Bald Rock and E side of Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC82716  Pinus sabiniana Tara Morgan 2002-3-19 3 Butte Right off the west side of Highway 32 on the slope of Big Chico Creek watershed towards the top of the slope along the paved road. 528 Comment
  CHSC103965  Piperia elongata Lowell Ahart 2010-5-7 16618 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC54350  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC74146  Piperia transversa R. Beattie; M. Muchowski 1996-7-17 Butte Ca 3 air mi SW of Walker Plains, on the N side of USFS Rd 22N93, 0.1 mi N of the Haphazard Creek crossing. 987 Comment
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  UC177517  Piperia unalascensis H. M. Hall 1914-7-28 9794 Butte Butte Creek 1524 Comment
  JEPS120072  Pistacia atlantica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC28151  Plagiobothrys austiniae Robert A. Schlising 1979-4-4 3351 Butte Northeast of Chico, along dirt road (formerly named Bruce Road) north of Skyway. In ditch. 76 Comment
  RSA32945  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte Near the Chico Airport. 91 Comment
  UC480682  Plagiobothrys austiniae H. F. Copeland 1928-4-3 1113 Butte foothills of Butte Co. Comment
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC75319 Image available Plagiobothrys bracteatus Dr. E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  UC180154  Plagiobothrys fulvus A. A. Heller 1913-4-7 10726 Butte hills 6 mi n Oroville Comment
  SEINET6973518  Plagiobothrys fulvus var. campestris Lewis S. Rose 1931-4-12 s.n. Butte Sacramento Valleys and its bordering foothills. Comment
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UCD18741  Plagiobothrys glyptocarpus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 34 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  RSA81730  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  UC196310  Plagiobothrys greenei A. A. Heller 1914-4-6 11266 Butte 8 mi n Oroville Comment
  UCD72999  Plagiobothrys greenei Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC103988  Plagiobothrys nothofulvus Lowell Ahart 2010-5-14 16672 Butte Along the trail, near the south park fence, 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. 257 Comment
  UC1377778  Plagiobothrys nothofulvus John Ingram 1960-4-6 508 Butte about 1 mi n junction of Pentz Road and Nelson Bar Road (slope below Pentz Raod, s of Paradise) Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC46252  Plagiobothrys shastensis Vernon Oswald 1989-3-30 3728 Butte Upper Bidwell Park, Chico. Along the North Rim Trail between Lookout Point above Horseshoe Lake and the double set of power lines. 182 Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  CHSC46771  Plagiobothrys stipitatus Lowell Ahart 1982-4-29 3387 Butte On the bottom of a small vernal pool, near the check in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  POM71619  Plagiobothrys stipitatus C. C. Bruce 1898-03 2417 Butte Sloughs. [No further location information.] Comment
  CHSC103723  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16652 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
  CHSC104002  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, 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
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 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.). Along the edge of vernal pond. 85 Comment
  CHSC90978  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS107765  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  HSC32646  Plagiobothrys tenellus David Johnson 1974-4-20 61 Butte Table Mtn. Comment
  SEINET10499839  Plantago bigelovii Lowell Ahart 1984-4-24 Ahart 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC58272  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte Growing on the south side of the spillway of Oroville Dam, on the east side of Oroville Dam. 274 Comment
  JEPS94192  Plantago elongata Lowell Ahart 1998-4-8 7949 Butte 0.25 mi. n.e. Oroville (0.1 mi. n. of Thermalito Diversion Dam, e. of Thermalito Diversion Pool, w. of dirt rd.) 67 Comment
  CHSC31163  Plantago erecta M. S. Taylor 1980-3-1 2353 Butte On bluffs overlooking Hamlin Canyon, ca. 1/2 mi se of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  RSA325092  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, ca 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca 2 mi N of Lake Concow, ca 20 air mi NE of Oroville. 854 Comment
  SEINET12318336  Plantago hookeriana Unknown 1978-1 18 Butte S side Hwy 32, ca 7.5 mi E jct Hwy 99 & 32 at Chico 515 Comment
  CHSC47468  Plantago lanceolata Lowell Ahart 1973-8-13 264 Butte Growing along 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
  CHSC38585  Plantago virginica Vernon Oswald 1983-5-2 421 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 91 Comment
  HSC95425  Plantago virginica L. Ahart 2000-5-13 8348 Butte Margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Rd., 1.25 mi. S of Oroville Airport, 5 air mi. SW of Oroville 43 Comment
  UC600639  Platanthera sparsiflora H. F. Copeland 1930-8-28 Butte Jonesville Comment
  SEINET13710512  Platanthera sparsiflora Lowell William Ahart, Lowell William Ahart, Peter L. Ahart 1984-1 4757 Butte 5 Mi. NE Stirling City, 0.5 Mi. E Bald Mtn, 1750 M 1750 Comment
  CAS-BOT-BC91593  Platystemon californicus H. E. Brown 1897-4-15 467 Butte Near Clear Creek. 53 Comment
  CHSC3819  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Scattered along road bank ca 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC39417  Platystemon californicus J. D. Jokerst. 1984-4-7 1966 Butte Table Mountain. Ca 100 meters south of the creek that flows into the south fork of Coal Creek Cayon. Comment
  RSA178678  Platystemon californicus var. californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  CHSC50063  Plectritis ciliosa Lowell Ahart 1990-4-8 6447 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC114959  Plectritis macrocera Lowell Ahart 2015-3-14 19950 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  UC463030  Pleuricospora fimbriolata E. B. Copeland 1931-7-30 Butte Jonesville Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  SEINET10449167  Pleuricospora fimbriolata Mary Susan Taylor 1981-4-27 Taylor 3560 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
  CAS-BOT-BC255687  Poa bolanderi Lowell Ahart 1985-7-16 5147 Butte Near Willow Creek, about 4 miles E of Cherry Hill, about 7 miles NE of Butte Meadows 1828 Comment
  CAS-BOT-BC254921  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather RIver, about 2 miles SE of Jarbo Gap 283 Comment
  CHSC42452  Poa bulbosa Lowell Ahart 1987-5-27 5718 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC9281  Poa bulbosa D. C. Burns 1971-4-3 115 Butte On n side of Cohasset rd., ca. .5 mi e of the intersection of Cohasset rd. and Vilas rd. 365 Comment
  CHSC99014  Poa compressa Lowell Ahart 2008-5-21 14776 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CAS-BOT-BC255787  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico Comment
  CAS-BOT-BC255976  Poa pratensis Lowell Ahart 1981-9-15 3155 Butte One half mile N of the Lost Creek Reservoir, Sierra Nevada 1100 Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 Butte 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. Comment
  CAS-BOT-BC255235  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  SEINET10822306  Poa scabrella A. Arthur Heller 1917-4-15 Heller 12678 Butte Treeless plains ten miles north of Chico in adobe soil. 64 Comment
  CAS-BOT-BC236363  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte Treeless plains 10 miles N of Chico 64 Comment
  JEPS108569  Poa secunda subsp. secunda L. P. Janeway, J. Tuitele-Lewis, M. Brown, S. Mackey Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek 1116 Comment
  JEPS120577  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. Comment
  CHSC103715  Pogogyne zizyphoroides Lowell Ahart 2010-5-14 16646 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  SEINET12318337  Pogogyne zizyphoroides E. D. Osman 1978-1 18 Butte Ca 7.8mi N of Chico and 200' E of Cohasset Hwy. Richardson Springs Quadrangle, 7.5'. NE corner of * 76 Comment
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 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
  CHSC101687  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC106868  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CAS-BOT-BC167558  Polygala cornuta var. cornuta H. F. Copeland 1920-8-26 179 Butte Near Jonesville 1219 Comment
  UC1130354  Polygala cornuta var. cornuta P. L. Johannsen 1936-7-29 973 Butte 1 mi n junction of Butte and Secret Creek; Paynes Creek Quadrangle Comment
  JEPS115577  Polygonum arenastrum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 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
  CAS-BOT-BC109149  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Road to Butte Meadows, 3.2 miles northeast from Highway 32. 1341 Comment
  CHSC39043  Polygonum bolanderi R. A. Schlising 1980-7-25 3916 Butte N part of county, along Humboldt Road, 1.9 mi NE jct with highway 32 at Lomo. 1356 Comment
  CHSC34777  Polygonum californicum L. Ahart 1981-11-6 3216 Butte In one of the open pasture fields on Peter Ahart Ranch, ca. 1.5 mi n and 1 3/4 mi e of Honcut. 50 Comment
  UC85631  Polygonum californicum Mrs. R. M. Austin 1883-1 Butte Chico Comment
  UC392223  Polygonum davisiae E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  UC478526  Polygonum douglasii subsp. spergulariiforme E. B. Copeland 1931-7-3 632 Butte Colby Canyon Jonesville 1550 Comment
  UC1101175  Polygonum hydropiperoides Herbert L. Mason and Verne Grant 1946-8-14 13027 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  POM183168  Polygonum phytolaccifolium H. F. Copeland 1930-7-21 1326 Butte Jonesville. 1524 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
  CAS-BOT-BC420997  Polygonum spergulariiforme H. F. Copeland 1920-8-24 218 Butte Scotch John Meadow Comment
  RSA105841  Polygonum spergulariiforme C. C. Bruce 1897-05 1984 Butte Iron Canyon Comment
  CAS-BOT-BC71870  Polypodium californicum Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut, N Honcut Creek 50 Comment
  SEINET10530411  Polypodium californicum Mary Susan Taylor 1980-3-19 Taylor 2394 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC41900  Polypodium calirhiza Lowell Ahart 1975-4-1 729 Butte About 50 yards south of the water trough, about 1 1/2 miles north-east of the Enterprise Bridge across Lake Oroville. 335 Comment
  CHSC40006  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte On the low banks of North Honcut Creek. Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC232575  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along Ponderosa Way, ca. 1.5 miles SE of the E Fork of Canyon Creek, ca. 14.5 miles NE of Oroville 575 Comment
  CHSC45217  Polypogon monspeliensis Lowell Ahart 1977-6-2 1399 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC71218  Polypogon monspeliensis Lowell Ahart 1998-6-9 7991 Butte About 200 yards southwest of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SEINET10960583  Polypogon monspeliensis A. Arthur Heller 1902-5-15 Heller 556 Butte Near Biggs Comment
  CHSC29000  Polystichum californicum M. S. Taylor 1980-4-1 2419 Butte Along s side of Butte Creek, ca. 1/4 mi down stream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC44607  Polystichum imbricans Vernon Oswald 1982-11-14 15 Butte Near Doon Campground, ca. 1 mi e of Lovelock (Skyway between Paradise and Stirling City). 853 Comment
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  RSA754818  Polystichum imbricans subsp. curtum L. Ahart 2009-6-30 15971 Butte E bank of Big Chico Creek, on W side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC30085  Polystichum scopulinum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3214 Butte Humboldt Peak. 2154 Comment
  JEPS8932  Porterella carnosula E. B. Copeland 1929-7-29 Butte near Butte Creek House; near Butte Creek House 1750 Comment
  CAS-BOT-BC267143  Potamogeton foliosus Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 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
  SEINET3892668  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station.; 0 Comment
  CHSC49687  Potamogeton natans Vernon Oswald 1987-4-30 2359 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In several ponds. 80 Comment
  CHSC8766  Potamogeton natans S. Chulasmai 1966-3-25 3 Butte Dredger Pond (3 miles south of Chico). Comment
  UC1586528  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte about 2 mi e of Honcut; Joie Osgood Ranch 45 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC93983  Potentilla gracilis var. fastigiata R. D. Fischer 2004-6-20 773 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. At north end of Chico Meadows, along meadow edge. 1371 Comment
  CAS-BOT-BC539446  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC46458  Potentilla millefolia V. Oswald; L. Ahart 1989-6-27 3826 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Meadow along Butte Creek. 1767 Comment
  CHSC63976  Proboscidea louisianica B. Castro 1987-8-6 202 Butte E side of Chico Cyn as it heads NE. 91 Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC94460  Prosopis glandulosa var. torreyana Lowell Ahart; Mike G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 21 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
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  JEPS124141  Prunus cerasifera Lowell Ahart 2015-8-21 20522 Butte On the southeast corner of the intersection of Cox Lane and Lone Tree Road, about 10 miles south of Oroville. Comment
  JEPS115857  Prunus dulcis Lowell Ahart 2009-2-27 15496 Butte South bank of Chico Creek, ''Lost Park,'' Lower Bidwell Park, Chico 60 Comment
  CAS-BOT-BC159920  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  CHSC92535  Prunus emarginata L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National Forest; on Sawmill Peak, 560 m east-southeast of the Lookout Tower; 2.4 km east of Magalia. Edge of old roadway. 966 Comment
  RSA4427  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville, on ridge West of North Willow Creek 1650 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  HSC60315  Prunus subcordata J. P. Smith, J. O. Sawyer 1973-4-14 6059 Butte Cohasset Comment
  CHSC41239  Pseudobahia heermannii J. D. Jokerst 1985-3-17 2157 Butte Near bottom of ravine ca 300 meters n of edge of Lake Oroville. First ravine east of Potter's Raive, ca 1/2 mile south of Box Hall Flat. Comment
  JEPS122208  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  SFV11416  Pseudognaphalium luteoalbum M. L. Vincent 1965-4-16 621 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC41999  Pseudognaphalium thermale Lowell Ahart 1975-9-4 973 Butte Along the South Fork of the Feather River, about 1/2 mile north of the Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  SEINET10530889  Pseudotsuga menziesii Mary Susan Taylor 1976-2-22 Taylor 1000 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  SBBG126085  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte E edge of Big Chico Crk, ca. 100 yards S of trail crossing the crk, ca. 100 yards W of Ten Mi House Rd, ca. 0.75 mi W of Hwy 32, ca. 9 mi (air) NE of Chico 189 Comment
  CHSC26783  Psilocarphus brevissimus var. brevissimus M. S. Taylor 1978-5-7 1614 Butte Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CAS-BOT-BC361829  Psilocarphus oregonus E. B. Copeland 1931-7-20 s.n. Butte Jonesville. Near Butte Creek House 1700 Comment
  CHSC39509  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  JEPS122031  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC90801  Psilocarphus tenellus var. tenellus Lowell Ahart 2005-5-2 11774 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
  JEPS119803  Ptelea crenulata Lowell Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  UC1602323  Ptelea crenulata J. E. Sowder 1933-7-7 110 Butte Camel Mound; Chico Quad. 609 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
  RSA105838  Pterostegia drymarioides R. M. Austin 1883-05 27 Butte Chico Creek Comment
  CHSC108767  Pyracantha koidzumii L. P. Janeway 2011-6-1 10354 Butte Sacramento Valley. North side of the levee on the south side of the Feather River just northwest of Centennial Park, Oroville. Old gravel bar along south side of the river, just above the water line. 41 Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  CAS-BOT-BC462604  Pyrola dentata Duncan Dunning 1921-7-29 9 (USDA no. 42081) Butte Lassen Forest, Chico Meadows 944 Comment
  CHSC48673  Pyrola picta Vernon Oswald 1987-7-13 3104 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  UCD117816  Pyrola picta L. E. Hazeltine 1916-7-30 s.n. Butte Sierra Nevada. 1828 Comment
  UC2026890  Quercus Lowell Ahart, Josephine Guardino 2012-10-12 18482 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. Comment
  SBBG19584  Quercus berberidifolia H. F. Copeland 1939-8-8 1575 Butte Humboldt Rd 12 mi E of Chico Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  UCD45252  Quercus berberidifolia John Thomas Howell 1955-6-15 30492 Butte Volcanic slope, 6 miles from Paradise, on road to Pentz, 1400 ft, Butte County. 426 Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  CHSC3565  Quercus chrysolepis R. D. Briggs 1966-2-20 21 Butte Three miles due south of Feather Falls. Comment
  JEPS119980  Quercus chrysolepis Lowell Ahart 2012-4-30 17930 Butte On the south side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS115840  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  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
  SEINET10477877  Quercus durata Mary Susan Taylor 1979-6-12 Taylor 2301 A Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC43677  Quercus vacciniifolia Vernon Oswald 1983-7-19 880 Butte Philbrook Rd. 1.3 mi w of the road to High Lakes. 1676 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the largest lake. 1935 Comment
  CHSC11811  Ranunculus aquatilis var. capillaceus E. B. Copeland 1929-7-28 360 Butte Jonesville. In streams. 1500 Comment
  CAS-BOT-BC379111  Ranunculus aquatilis var. diffusus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte in and along west branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 1615 Comment
  CHSC2385  Ranunculus arvensis R. Carter 1965-3-23 171 Butte Found 10 yds. N of Richardson Springs turnoff along E side of Cohasset Rd. along W side of rock fence. 167 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  CHSC115288  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte On the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC378935  Ranunculus californicus var. californicus Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC33969  Ranunculus flammula M. S. Taylor; L. Ahart 1981-8-15 4188 Butte N end of Snag Lake; e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC101166  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  UC204954  Ranunculus muricatus A. A. Heller 1914-4-17 11306 Butte 8 mi n Oroville Comment
  SEINET12091617  Ranunculus occidentalis Unknown 1984-1 6 Butte ca 3/4 mi ne of Centenial and Manzanita avenues. Nw side of road. Chico Quadrangle 15'. NW corner 70 Comment
  CHSC79557  Ranunculus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1997-5-1 13718 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. 775 Comment
  CHSC43498  Ranunculus pusillus Lowell Ahart 1979-5-20 1882 Butte On the edge of a depression, on the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  SEINET10940374  Raphanus sativus Mary Susan Taylor Taylor 775 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC25522  Rhamnus ilicifolia Marc Hayes; Warner 1977-9-11 64 Butte Along roadside, ca. 3 m s of road on Humboldt Rd., ca. .5 mi from junction of Humboldt Rd. and Hwy 32 (exactly 5.2 miles from Hwy 99 overpass on Hwy 32 in Chico). 152 Comment
  CHSC27843  Rhamnus tomentella subsp. tomentella T. B. Devine 1978-10-17 468 Butte At Covered Bridge at intersection of Humbug Rd. and Honey Run Rd. Comment
  CHSC100418  Rhododendron occidentale L. P. Janeway; Heather Koeth 2008-11-17 9610 Butte Northern High Sierra Nevada. On the flats on the southwest side of Fall River at Nelsons Crossing (across from the mouth of Kenebeck Creek). 43 Comment
  UC124165  Rhus trilobata Mrs. R. M. Austin 1896-4 767 Butte Little Chico Creek Comment
  CHSC38911  Rhynchospora californica Vernon Oswald 1983-6-9 653 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1400 ft e of Salmon Hole Parking Lot. 182 Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC96970  Rhynchospora capitellata Lowell Ahart; Lawrence Janeway, Linnea Hanson 2007-7-10 14278 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville. 1024 Comment
  SD2126  Ribes californicum E. B. Copeland 1931-7-31 Butte Woods near Butte Creek Comment
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Jul 22 2018
  CHSC81517  Ribes nevadense D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CHSC31399  Ribes roezlii Leslie Steidl 1980-3-15 4 Butte Ca. .6 mi nw of Lumpkin Rd on Island Bar Hill Rd. and 1 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  CAS-BOT-BC198956  Ribes roezlii var. roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville 1524 Comment
  CAS-BOT-BC353730  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville 853 Comment
  CAS-BOT-BC74470  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  SEINET10907259  Rorippa curvisiliqua Mary Susan Taylor 1975-4-26 Taylor 533 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
  CDA25116  Rorippa curvisiliqua var. occidentalis L. Ahart 2002-10-17 9988 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
  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
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC98987  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC10759  Rorippa nasturtium-aquaticum Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8751  Rorippa nasturtium-aquaticum S. Chulasmai 1966-5-20 36 Butte Heloepine Spring (Upper Bidwell Park, roadside). Comment
  UC127746  Rosa bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS120080  Rosa californica Lowell Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path, Lower Bidwell Park, Chico. Comment
  SEINET10483501  Rosa californica Mary Susan Taylor 1975-7-4 Taylor 833 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  JEPS99064  Rosa eglanteria Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) NE of Honcut, about 12 miles (air) SE of Oroville. 60 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS115698  Rosa pisocarpa Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC274232  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC37663  Rubus armeniacus T. B. Devine 1981-9-3 769 Butte In dry or drying mud at edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC95081  Rubus glaucifolius L. P. Janeway 2006-6-25 8705 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  CHSC23656  Rubus laciniatus M. S. Taylor 1976-4-24 1065 Butte Ca. 10 ft w of Oroville-Quincy Hwy, ca. 50 ft s of Lake Madrone, in vicinity of Berry Creek entrance to the Lake. 914 Comment
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SBBG3096  Rubus laciniatus H. and M. Dearing 1938-6-21 2048 Butte 20 mi NE of Chico, near Shuffleston Station Comment
  CHSC40332  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC48871  Rubus leucodermis Vernon Oswald 1984-5-21 1194 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.25 mi s of the Little West Fork of the West Branch of the Feather River. 853 Comment
  RSA4645  Rubus parviflorus var. bifarius E. B. Copeland 1930-7-16 s.n. Butte Jonesville. 1600 Comment
  CAS-BOT-BC433198  Rubus pensilvanicus Peter H. Raven 1953-5-9 5449 Butte 6.5 miles from Bangor on road to Oroville Comment
  JEPS122191  Rubus ursinus Lowell Ahart 2014-4-16 19365 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
  UC1562345  Rudbeckia occidentalis Vernon Oswald and Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi N of Concow. 1097 Comment
  CHSC6032  Rumex M. MacArthur 1968-6-19 262 Butte Along SE edge of Big Chico Creek, just below headhouse, Chico State College. 60 Comment
  CHSC112338  Rumex acetosella Lowell Ahart 2013-7-9 18835 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC113447  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC42974  Rumex acetosella Lowell Ahart 1987-7-8 5802 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UCD170307  Rumex acetosella L. Ahart 1982-5-28 3443 Butte Under a Digger Pine and near a small wash, E of North Honcut Creek, ca. 3 mi NE of Honcut. 50 Comment
  CAS-BOT-BC422139  Rumex californicus Lowell Ahart 1988-6-28 6081 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut 39 Comment
  CHSC36510  Rumex crispus L. Ahart 1982-5-29 3451 Butte In a farmed field, near the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC102507  Rumex pulcher Lowell Ahart 2009-5-30 15798 Butte About 80 yards south of the gate, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CAS-BOT-BC434167  Rumex triangulivalvis A. A. Heller 1928-7-25 14702 Butte Butte Creek House Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35034  Sagina apetala R. A. Schlising; R. Banchero, J. Jokerst 1981-3-22 4007 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  UC1562014  Sagina apetala Barbara Ertter with Lowell Ahart 1986-4-13 5896 a Butte ca. 2 airmiles n.-n.e. of Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  CHSC36073  Sagina procumbens R. A. Schlising 1982-5-29 4228 Butte Chico; State University campus on n side of Library. Comment
  CAS-BOT-BC129901  Salix bonplandiana A. A. Heller 1914-3-21 11222 Butte Hills, 8 miles north of Oroville, below the Quercus Doutlasii belt. Comment
  UC600408  Salix boothii E. B. Copeland 1931-6-11 Butte at outlet Kirby Meadow; Jonesville 1800 Comment
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  CAS-BOT-BC107834  Salix gooddingii Gordon H. True; J. T. Howell; Lewis S. Rose 1968-6-12 4293 Butte Feather River Canyon near Pulga Bridge 609 Comment
  CHSC113289  Salix gooddingii Lowell Ahart 2014-4-9 19346 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  UC203649  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte 12 mi from Chico (on Chico-Oroville rd; banks of Dry Creek); Sacramento Valley, Dry Creek Comment
  CAS-BOT-BC104074  Salix hindsiana Lowell Ahart 1987-5-6 5540 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  RSA0045619  Salix laevigata Lowell A. Ahart 2012-4-9 17848 Butte About 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC108858  Salix lasiolepis Lowell Ahart 2012-2-22 17750 Butte Around the edges of the pond east of the table, at the old homestead, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  CAS-BOT-BC129621  Salix lasiolepis var. lasiolepis Javier Penalosa 1962-6-18 2441 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC42543  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5683 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC9691  Salix nigra E. L. Smith 1971-9-12 1063 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CHSC65010  Salix scouleriana Vernon Oswald 1987-6-9 2971 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  RSA755771  Sambucus mexicana L. Ahart 2009-5-30 15807 Butte East side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 412 Comment
  CAS-BOT-BC238620  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC235068  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  JEPS115317  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC87440  Sanicula bipinnatifida R. D. Fischer; Jenny Marr 2004-4-2 104 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail south of Pine Trail junction. 396 Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC44269  Sanicula tracyi V. Oswald; L. Ahart 1988-6-17 3394 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC46328  Sanicula tuberosa Lowell Ahart 1989-5-29 6326 Butte On a lava cap, near the dirt road, east of Mooreville Ridge, about 2 air miles north of the Lost Creek Dam, south of the west branch of Pinkard Creek. 1188 Comment
  UC566791  Sanicula tuberosa Herbert L. Mason 1927-5-11 3727 Butte vicinity of Dobbins 457 Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  JEPS93968  Saxifraga californica Vernon H. Oswald 1998-3-16 8890 Butte along lower Jeep Trail paralleling the e side of Big Chico Creek (n of the old homestead, n end of Upper Bidwell Park); Upper Bidwell Park 243 Comment
  SEINET10628292 Image available Saxifraga fallax A. Arthur Heller 1914-3-19 Heller 11214 Butte Canon of Big Chico creek. Comment
  POM354597  Saxifraga marshallii M. M. Boney 1897-1 s.n. Butte [No locality information provided] 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
  HSC93377  Scandix pecten-veneris L. Ahart 1995-5-30 7586 Butte Edge of Beatson Hollow Creek, about 1 mi. NW of Cherokee Road, N Table Mountain, about 7 mi. N of Oroville 305 Comment
  CHSC68453  Schoenoplectus acutus var. occidentalis L. P. Janeway 1986-9-20 1867 Butte Along River Road (Fell Road) about 1 mi south of Chico River Road (River Road). 38 Comment
  POM313089  Schoenoplectus acutus var. occidentalis H. L. Mason, Verne Grant 1946-8-7 12993 Butte Grey Lodge Game Refuge; Gridley Road north of Butte Sink Comment
  CHSC66366  Schoenoplectus mucronatus Vernon H. Oswald 1996-6-20 7836 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A seasonal marsh at the SW corner of Tract 2, Sanctuary II. 33 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
  CHSC64241  Scirpus diffusus S. C. Morey 1983-8-1 646 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET7487248 Image available Scirpus diffusus Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11404 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek; ; W side of paved road 1448 Comment
  CDA2625  Scirpus mucronatus Margaret Bellue Aug 1947 Butte Afton Road, near Biggs. 0 Comment
  JEPS104047  Scirpus setaceus Lowell Ahart 2003-6-30 10337 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  SEINET10537483  Scleranthus annuus Lowell Ahart 1983-4-1 Ahart 3915 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC50031  Scleranthus annuus subsp. annuus Lowell Ahart 1990-4-15 6460 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC50662  Scleranthus annuus subsp. annuus Lowell Ahart 1990-6-16 6515 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC30031  Scribneria bolanderi L. Ahart 1980-5-4 2212 Butte About 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS104097  Scribneria bolanderi Lowell Ahart 2003-4-10 10084 Butte Along a small drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  SEINET10508334  Scribneria bolanderi Mary Susan Taylor 1979-5-6 Taylor 1996 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC51277  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 6634 Butte Growing below the high water line of Lake Oroville, about 1mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 243 Comment
  CHSC36517  Scutellaria californica L. Ahart 1982-5-28 3439 Butte Near Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC86142  Scutellaria californica John Dittes; Josephine Guardino 2002-6-27 622 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.9 air-mile east of Middle Fork Feather River, ca. 5.0 air-miles north by northwest of town of Feather Falls, ca. 1.6 air-mile north of Feather Falls Overlook. South-facing slope below FS access road, ca. 3,000 feet north of Fall River. 1036 Comment
  CHSC101326  Scutellaria tuberosa Lowell Ahart 2009-4-22 15582 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SFV3240  Scutellaria tuberosa M. L. Vincent 1961-3-26 11 Butte Sierra Nevada Nelson Bar Road, 1 mile above Feather River bridge toward Pentz Road. Southeast of Paradise 330 Comment
  SEINET10499230  Scutellaria tuberosa Mary Susan Taylor 1974-4-20 Taylor 184 A Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  CHSC87314  Sedella pumila Lowell Ahart 2004-2-7 10699 Butte In a depression, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 71 Comment
  JEPS119771  Sedella pumila Lowell Ahart 2012-5-12 18037 Butte On the south side of Humboldt Trail, about 200 yards east of Guardian Trail, about 1/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC415013  Sedella pumila N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 06 Butte Table Mountain, Cherokee Rd., approx. two miles E of Hwy 70 Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  CHSC60280  Sedum spathulifolium Kathleen McShea 1992-4-23 19 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  CAS-BOT-BC62124  Selaginella hansenii A. A. Heller 1913-4-6 10715 Butte Hills near Big Chico Creek, east of Chico Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  HSC81460  Selaginella hansenii M. Mesler, Karen Lu 1984-3-24 Butte Road between Chico and Paradise Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  HSC66272  Selaginella wallacei M. S. Taylor, J. D. Jokerst, L. Ahart 1980-4-4 2439 Butte Junction of Rocky Honcut Creek and Swedes Flat Rd., 2 mi. E of Oroville-Bangor Hwy., 10 mi. SE of Oroville 366 Comment
  HSC78629  Selaginella wallacei L. P. Janeway 1984-10-8 1180 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  UC174133  Senecio integerrimus var. exaltatus T. S. Brandegee 1892-6-29 Butte Jonesville Comment
  CHSC30364  Senecio sylvaticus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 691 Butte Top of North Table Mt, 100 E of waterfalls of the S branch of Coal Cr. 365 Comment
  CHSC94012  Senecio sylvaticus R. Fischer 2005-4-30 675 Butte Collection from along Hwy. 32, ca. 5 miles north of Chico on the Big Chico Creek Ecological Reserve, on a canyon edge trail called the Overlook. 518 Comment
  CHSC113379  Senecio vulgaris Lowell Ahart 2014-4-9 19329 Butte Rice field road, near the pump, on the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC113926  Senecio vulgaris Lowell Ahart 2014-4-16 19358 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CAS-BOT-BC364550  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  SEINET11805155  Senecio vulgaris Unknown 1969-1 81 Butte 100 yds N of Salmon Hole, Upper Bidwell Park, Chico 70 Comment
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CHSC41994  Sericocarpus oregonensis Lowell Ahart 1975-9-4 971 Butte Sierra Nevada. Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC78791  Sericocarpus oregonensis Lowell Ahart 2000-6-27 8695 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
  CHSC46981  Setaria parviflora Vernon H. Oswald 1989-9-19 4012 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in s Chico. Along Comanche Creek. 68 Comment
  CAS-BOT-BC240120  Setaria pumila John Thomas Howell 1961-9-22 36765 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC116637  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte On the west side of Swedes Flat Road, about 1/2 mile southwesst of Dutch Ravine, about 8 miles (air) southest of Oroville. 384 Comment
  SEINET12319558  Sherardia arvensis G. M. Grossberg 1978-1 7 Butte North Table Mountain, ca 0.5 mi NNE of Cherokee Road, 6 mi N of Oroville 396 Comment
  SEINET10448357  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 A Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  CHSC34955  Sidalcea asprella J. D. Jokerst; R. A. Schlising 1979-5-18 3408 Butte North of Oroville and Table Mt., 1.75 miles S of Cherokee Historical Site on Cherokee Road. Comment
  CHSC84867  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7805 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 173 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 299 Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC116992  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC38550  Sidalcea calycosa Vernon Oswald 1983-5-9 459 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  JEPS100685  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
  UC1755045  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
  CHSC1044  Sidalcea hartwegii J. Baynes 1929-4-21 Butte Paradise. 548 Comment
  UCD14326  Sidalcea hartwegii Bif Sopez 1983-5-15 7 Butte Butte Co., 200 ft. north of Welch-Polermo Road on Highway 70; 91 Comment
  UC478499  Sidalcea oregana subsp. spicata E. B. Copeland 1930-7-15 659 Butte Jonesville 1500 Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC99019  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC48265  Silene bernardina Vernon Oswald 1985-7-21 1909 Butte Jones Meadow Rd. ca. 0.1 mi s of its jct. with the dirt road coming in from Inskeep, ca. 0.7 air mi wnw of Jones Meadow Lake. On the edge of the road. 1737 Comment
  SEINET11931589  Silene californica Unknown 1974-1 32 Butte ca 10 mi NE of Chico on Cohassett Rd 549 Comment
  SEINET10537580  Silene douglasii Mary Susan Taylor 1979-7-21 Taylor 2146 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET7073605  Silene noctiflora A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road about 8 miles east of Chico. UTM Zone 10, 613369mE, 4399651mN. Coordinate datum: NAD27. Comment
  SEINET10537666  Silene occidentalis subsp. occidentalis Mary Susan Taylor 1982-8-16 Taylor 5000 Butte T24N R4E se/sw sec 1. Pulga NW quad. Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600 ft. 1707 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
  CAS-BOT-BC75277  Sisymbrium officinale John Thomas Howell 1962-6-15 37482 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  CHSC43042  Sisyrinchium elmeri L. P. Janeway 1987-7-5 2438 Butte 1.0 mi SW of Jones Ndw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  SD8215  Smilax californica Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  CHSC112743  Solanum americanum Lowell Ahart 2013-11-13 19248 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
  CHSC39226  Solanum americanum M. S. Taylor; K. Tharp 1983-3-11 5232 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
  JEPS95793  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry 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
  RSA724846  Solanum americanum L. Ahart 2006-9-28 13377 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
  CDA41197  Solanum parishii L. Ahart 2006-5-19 12633 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. Comment
  CHSC114961  Solanum parishii Lowell Ahart 2015-3-14 19946 Butte On the north side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  CHSC109428  Solanum rostratum David Scofield Wilson 2012-8-25 Butte Sacramento Valley. City of Chico. Backyard of 648 Bryant Avenue. 67 Comment
  CAS-BOT-BC157641  Solanum umbelliferum E. B. Copeland 1930-7-27 453 Butte Jonesville 1600 Comment
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC107121  Soliva sessilis L. P. Janeway 2011-4-26 10237 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  CHSC38389  Soliva sessilis Vernon Oswald 1983-5-1 402 Butte Upper Bidwell Park, Chico, at Parking Area P located 2.0 mi e of the power lines. 207 Comment
  CHSC46337  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
  UCD136106  Soliva sessilis W. R. Powell 1968-5-6 1482 Butte 1.8 miles north-northeast of Bangor. 342 Comment
  RSA755314  Sonchus asper subsp. asper L. 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 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  POM180916  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek. 1524 Comment
  CAS-BOT-BC158896  Sorbus scopulina Lowell Ahart 1982-9-13 791 Butte Near the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC116006  Sorbus scopulina Lowell Ahart 2015-10-9 20551 Butte East side of Philbrook Road, about 100 yards southeast of the bridge across the West Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. 1510 Comment
  JEPS124191  Sorbus scopulina Lowell Ahart 2015-10-9 20551 Butte About 100 yards southeast of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. 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
  CAS-BOT-BC389943  Spergula arvensis Lowell Ahart 1980-3-22 2047 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC82262  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC33675  Spergularia bocconi L. Ahart 1981-5-16 2799 Butte Along edge of dirt roads on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CAS-BOT-BC390596  Spergularia rubra Clarence R. Quick 1963-7-16 63 53 a Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CAS-BOT-BC149612  Spiraea douglasii A. A. Heller 1928-7-10 14675 Butte At Butte Meadows Comment
  CHSC112692  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC45807  Spiraea douglasii L. P. Janeway 1988-7-2 2940 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS110088  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS121975  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte About 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA700394  Spiraea douglasii L. Ahart 2004-8-2 11331 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
  CHSC51949  Spiranthes porrifolia L. P. Janeway 1988-7-29 3107 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CDA2510  Sporobolus indicus L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. Comment
  CHSC65573  Stachys ajugoides var. rigida R. Banchero 1980-7-28 314 Butte Upper margins of Chico Meadows. Ca 1 mi N of jcn of Humboldt Rd and the Skyway, ca 6 mi NE of jcn Humboldt Rd and Hwy 32. 1322 Comment
  CHSC88063  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  UC600445  Stachys ajugoides var. rigida H. F. Copeland 1927-9-4 Butte Jonesville Comment
  CHSC102960  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC42979  Stachys pycnantha L. P. Janeway 1987-6-5 2129 Butte Along OroQuincy Hwy just S of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  UC1594538  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte about 3 air mi ne Concow Reservoir (on w side of Concow Meadow); Concow Meadow 1097 Comment
  CHSC26847  Stellaria longifolia M. S. Taylor; M. Hayes 1978-6-24 1637 Butte On Ernies Island in Butte Creek at its jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CDA24151  Stellaria longipes T. C. Fuller 1962-7-12 9182 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC46082  Stellaria media Lowell Ahart 1989-3-25 6195 Butte Along an old road to Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  CAS-BOT-BC395115  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the N Fork of the Feather River, a little N of the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC35039  Stellaria nitens R. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4003 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CHSC11854  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville. On gravel bars by Butte Creek. 1500 Comment
  CAS-BOT-BC405341  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  CHSC61300  Stephanomeria lactucina Lowell Ahart 1993-7-29 7131 Butte On the west side of the dirt road to the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 Comment
  UC1562279  Stephanomeria paniculata Lowell Ahart 1990-8-15 6592 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  SEINET10506971  Stipa Mary Susan Taylor 1981-5-14 Taylor 3718 Butte T22N R6E sw sec 16, Pulga SE quad. S side of 23N00.2 in open landing area and edge of Yellow Pine Forest, ca. 2 mi SW of Merrimac. 3700 ft. 1128 Comment
  CHSC113964  Stipa occidentalis var. californica Lowell Ahart 2014-7-13 19655 Butte About 40 yards south of Philbrook Road, abofrom the large meadow go west to the snow lake, go on about 40 yards to the ridge, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  HSC96684  Streptanthus diversifolius L. Ahart 2006-5-3 12555 Butte 0.25 mi. N of the parking area, cow chute, and Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 403 Comment
  JEPS94685  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC44032  Streptanthus longisiliquus L. P. Janeway 1988-6-14 2791 Butte Northwest side of cyn of Cedar Cr, 4.1 mi E of Lomo along the 'Cedar Loop.' S-facing cutbank of the dirt rd. 1280 Comment
  CAS-BOT-BC87432  Streptanthus polygaloides John Thomas Howell; Gordon H. True 1967-6-11 42559 Butte Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge. 417 Comment
  CHSC33177  Streptanthus polygaloides R. E. Preston; L. E. Preston 1981-5-25 70 Butte Ca. 320 m n of the jct of the Skyway and Coutelenc Rd., Magalia. 700 Comment
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC75483  Streptanthus polygaloides G. F. Hrusa; T. D. Wilfred 1997-5-8 13747 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  UC1492816  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4175 Butte on Ponderosa Rd 0.9 mi w Rattlesnake Creek (ne of Magalia) Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487