Search Results — 2000 specimen records retrieved (1606 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
  UC600584  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  SEINET10530557  Abies concolor Mary Susan Taylor 1979-3-31 Taylor 1964 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  POM220653  Abies magnifica H. F. Copeland 1928-8-29 331 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  JEPS104463  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the w side of an irrigation ditch, on the e side of Upper Palermo Rd, ca 2 mi (air) ne of Palermo. 67 Comment
  CHSC110871  Acer circinatum Tim Hanson 2013-9-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 Comment
  CHSC97424  Acer glabrum var. torreyi Robert Fischer 2006-6-11 1015 Butte Butte Meadows. North-east corner of Butte County along county road 26N27 north of the Humboldt Road junction. 1676 Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC7127  Acer negundo var. californicum Lynn R. Thomas 1969-3-23 15 Butte N bank Big Chico Creek at junction of Stewart and Bidwell Ave., ca. 0.5 mi w of Chico. 60 Comment
  CHSC77293  Acer negundo var. californicum L. P. Janeway 2000-3-29 6641 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  CHSC27204  Acer palmatum P. Moyer 1971-10-8 43 Butte CSUC Campus. Front lawn Admin. Bldg. 60 Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  JEPS117291  Achillea millefolium Lowell Ahart 2010-9-21 17216 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
  POM289125  Achillea millefolium Lyman Benson 3957 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  CHSC40464  Achnatherum lemmonii Lowell Ahart 1985-5-15 5004 Butte 1/8 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC217018  Achnatherum occidentale V. Oswald; L. Ahart 1988-7-13 s.n. Butte S side of road to High Lakes, E of Philbrook Reservoir 1859 Comment
  CHSC31423  Achnatherum stillmanii L. Ahart 1980-9-10 2626 Butte Ca. 1/10 mi e of Little Bald Rock, ne of Oroville. 335 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  SBBG17315  Achyrachaena mollis M. Vincent 1962-4-15 191 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  SEINET11842159  Achyrachaena mollis E. J. Baker 1984-1 20 Butte E. side of Hwy 99, 1 yd S of intersection with Broyles Rd, ca 12 mi N of Chico 58 Comment
  JEPS122339  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19726 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC113919  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Orovolle, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of OrovIlle. Collected about 1/4 mile west of point above, according to label. 259 Comment
  CHSC34227  Acmispon argophyllus var. fremontii M. S. Taylor 1981-5-7 3628 Butte Decomposed granite, n side of Ponderosa Way, ca. 0.8 mi n of the Sucker Creek bridge ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC94053  Acmispon brachycarpus R. D. Fischer 2005-3-20 727 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plants growing on moist bank next to road side. 518 Comment
  CHSC42557  Acmispon parviflorus Lowell Ahart 1987-5-6 5522 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC39539  Acmispon strigosus Lowell Ahart 1983-5-28 4021 Butte Above the trail about 1/4 mile from the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  UCD95295  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC391376  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC52676  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-6 328 Butte Ca. 0.9 mi w of Cherry Hill in the ne part of Butte County, Butte Meadows. 1414 Comment
  CHSC11851  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville. 1500 Comment
  SEINET11708078  Adiantum capillus-veneris J. D. Mott 1978-1 10 Butte West Branch Feather River 280 Comment
  CHSC2838  Adiantum jordanii David Prall 1965-4-16 24 Butte 2 yds. Up the N bank 10 yds NW from Humbug Rd. 0.3 miles east from junction of Sunhill D. 198 Comment
  CHSC9263  Adiantum jordanii D. C. Burns 1971-4-9 129 Butte Abundant ca. 1 mi e of the intersection of Manzanita Ave. and Centennial Ave. (lower Big Chico Creek Canyon, called the fern banks). 82 Comment
  CHSC78084  Aesculus californica April Glover 1997-4-4 27 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32. 390 Comment
  CHSC6008  Aesculus carnea M. MacArthur 1968-6-19 259 Butte Chico State College. At main entrance to Auditorium. 60 Comment
  CAS-BOT-BC29496  Agoseris J. T. Howell 1962-6-16 37565 Butte Magalia 731 Comment
  CHSC38318  Agoseris grandiflora Vernon Oswald 1983-6-13 668 Butte Upper Bidwell Park, Chico, beside the road between Centennial Ave. and the Police Pistol Range. 91 Comment
  UC203560  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  CHSC109559  Agoseris grandiflora var. leptophylla L. P. Janeway 2012-8-1 10916 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  CAS-BOT-BC22963  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC13345  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road about 2 mi SW of Bardees Bar along the North Fork of the Feather River, about 4.5 mi SW of Pulga 365 Comment
  CHSC48840  Agrimonia gryposepala Vernon Oswald 1985-7-24 1911 Butte East meadow at Doon Camp located on the Skyway ca. 1 mi e of Lovelock. 841 Comment
  JEPS98367  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte 13 air miles NE of Oroville (N side of Bean Creek Road, about 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CAS-BOT-BC127326  Agrostis exarata Lowell Ahart 1982-9-13 3823 Butte Near Pinkard Creek. Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CHSC49495  Agrostis exarata Vernon Oswald 1987-5-18 2905 Butte Butte Creek Reserve on the north side of Butte Creek e of Hwy 99. 68 Comment
  UC1594700  Agrostis exarata Lowell Ahart 1992-7-21 6810 Butte about 2 (air) mi ne Philbrook Reservoir (s side Coon Hollow); s side Coon Hollow 1737 Comment
  SEINET10789990  Agrostis exarata Lowell Ahart 1988-7-31 Ahart 6152 Butte Spike Bentgrass. On damp soil, around stream rounded boulders, on the east side of West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City, Butte County, California. 914 Comment
  JEPS116027  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
  SEINET10507089  Agrostis gigantea Lowell Ahart 1985-11-7 Ahart 5235 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10876406  Agrostis hyemalis A. Arthur Heller 1917-7-26 Heller 12847 Butte Moist shaded places in the yellow pine forest, Butte Measow. 1280 Comment
  CHSC8192  Agrostis microphylla D. McClain 1969-4-18 63 Butte 500 yds. N. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its juction with Feather River Highway. 487 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1594733  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte small stream about 1/2 mi n Carr Mine (s side of hollow, about 2 (air) mi s of Snow Mountain); Coon Hollow 1737 Comment
  CHSC69733  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  UCD53348  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC138642  Agrostis stolonifera Lowell Ahart 1988-9-4 6178 Butte Near Big Kimshew Creek, about 1 air mile northeast of Jones Meadow. 1920 Comment
  CHSC91470  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 Butte About 20 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. 759 Comment
  CHSC44176  Agrostis variabilis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  SEINET7067154  Aira caryophyllea A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  SEINET10841174  Albizia julibrissin Mary Susan Taylor Taylor 780 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC33669  Alisma lanceolatum L. Ahart 1981-5-25 2838 Butte Bottom of a deep wash, on Peter Ahart Ranch, ca. 2 mi n and 1/15 mi e of Honcut. 50 Comment
  CHSC37659  Alisma plantago-aquatica T. B. Devine 1981-8-31 763 Butte Robbers Gulch through Butte Creek Country Club Golf Course, Chico. 57 Comment
  CHSC36909  Allium amplectens S. Azevedo; R. A. Schlising 1980-6-13 3700 Butte NE of Forest Ranch; 2.3 mi e and se of Hwy 32 along Garland Road, near jct with Doe Mill Road and Ponderosa Way. 902 Comment
  CHSC4076  Allium amplectens H. E. Lindahl 1967-4-6 9 Butte Located 1.1 mi n of county dump on Neal Rd. Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  CAS-BOT-BC460375  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1898 Butte Fields near Chico Comment
  POM110214  Allium amplectens C. C. Bruce 1897-05 1899 Butte [No locality information provided] Comment
  RSA21176  Allium amplectens Carl B. Wolf 1937-5-14 8668 Butte Sacramento Valley, 4 1/2 miles W of Oroville on road to Richvale. 46 Comment
  RSA256662  Allium amplectens R. A. Vanbianchi 1974-4-20 209 Butte 300 yards south of the intersection of Pentz and Clark Roads. Comment
  CHSC3533  Allium cratericola John Francis 1966-3-28 89 Butte Table Mt. Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  SEINET7073604  Allium crispum A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
Read comments
Jul 16 2018
  SEINET12046121  Allium howellii J. D. Mott 1978-1 19 Butte .5 mi E of Monk's store, Cohasset Stage Comment
  JEPS49152  Allium hyalinum Robert Ornduff 1967-4-15 6942 Butte s Table Mountain (field at junction of Cherokee road and Chico-Oroville road) 82 Comment
  RSA0118750  Allium hyalinum L. P. Janeway 2015-3-23 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CAS-BOT-BC135814  Allium jepsonii A. A. Heller 1940-6-5 15703 Butte Jarboe Pass on the Feather River Highway 609 Comment
  CHSC62603  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca. 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS Rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  CHSC12108  Allium peninsulare J. M. Pitts 1972-4-28 180 Butte Locally abundant on bank at target end of police pistol range, Bidwell Park, Chico. 152 Comment
  CAS-BOT-BC132068  Allium peninsulare var. peninsulare Peter H. Raven 1953-5-9 5424 Butte 8 mi. from Bangor on Oroville Road Comment
  UC169648  Allium validum Mrs. R. M. Austin Aug. 1896 222 Butte Colby Comment
  RSA337384  Allophyllum divaricatum L. Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  CHSC111396  Alnus rhombifolia Lowell Ahart 2012-5-14 18052 Butte On dry deep excellent soil, on the south bank of Big Chico Creek, north of the paved road, between Tables 10 and 11, Lower Bidwell Park, Chico. 73 Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  CHSC27056  Alopecurus carolinianus Lowell Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42219  Alopecurus carolinianus John E. Hunter 1986-3-30 41 Butte Ca. 1 km e of Chico, 50 m s Hwy. 32. 75 Comment
  CHSC50703  Alopecurus carolinianus Lowell Ahart 1990-6-16 6517 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS122216  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 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
  SEINET10790508  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil on floor of rice field, Peter Ahart Ranch, 2 mi. ne of Honcut. 50 Comment
  CHSC42853  Alopecurus geniculatus Lowell Ahart 1987-5-6 5547 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC137938  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  SEINET10511193  Alopecurus saccatus Roland McKee 1909-1 McKee s.n. Butte Chico. Comment
  CHSC21244  Amaranthus albus M. S. Taylor 1975-6-21 774 Butte In field at end of Citrus Ave, between 11th and 12th Aves, Chico. Comment
  CHSC30384  Amaranthus albus J. D. Jokerst 1980-5-28 804 Butte Top of Table Mt., sides of Cherokee Rd at the east end of the Mt. Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS95991  Amaranthus albus Lowell Ahart 1999-9-21 8265 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
  UCD97152  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 miles north of Oroville. Comment
  CHSC37532  Amaranthus blitoides M. S. Taylor; L. Ahart 1982-10-11 5159 Butte Graylodge Wildlife Refuge, on n side of loop road w of HQ, 12 mi sw of Gridley. 18 Comment
  JEPS103456  Amaranthus californicus Lowell Ahart 2002-10-17 9984 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 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
  POM196088  Amelanchier pallida H. F. Copeland 1929-6-10 1208 Butte Jonesville. 1524 Comment
  JEPS110082  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville Comment
  CDA36700  Ammannia coccinea P. B. Kennedy 1916-4-4 Butte Biggs. 0 Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  UC79551  Amsinckia H. E. Brown 1897-3-22 168 Butte near Clear Creek 53 Comment
  CAS-BOT-BC213949  Amsinckia John Thomas Howell 1976-4-2 51553 Butte About 2 miles southeast of Chico 60 Comment
  CHSC40547  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS119741  Amsinckia intermedia Lowell Ahart 2012-3-23 17786 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC725863  Amsinckia intermedia A. A. Heller 1942-4-26 Butte Oregon City Road Comment
  UCD119272  Amsinckia intermedia Francia Chisaki; R. Bacigalupi and G. T. Robbins 1956-4-18 677 Butte 7.2 miles S of Tehama-Butte County line. Comment
  CHSC65776  Amsinckia lycopsoides Vernon H. Oswald 1996-4-10 7351 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the levees at the NE corner of Tract 10.2, Sanctuary 1. 32 Comment
  CHSC36307  Anagallis arvensis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4362 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  UCD56063  Andropogon glomeratus var. pumilus Bellue 1942-3-17 s.n. Butte About 2 miles SE Oroville. Comment
  CAS-BOT-BC137804  Andropogon virginicus var. virginicus W. S. Ball 1939-2-16 s.n. Butte Wyindott Irrigation District, ditch east of Oroville about 5 miles. Comment
  SBBG26817  Angelica breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  CAS-BOT-BC84697  Anthemis cotula Lowell Ahart 1982-4-29 3390 Butte Gray Lodge. Dirt road a little west of the sign in station. About 12 miles south-west of Gridley 35 Comment
  CHSC78357  Anthoxanthum odoratum Lowell Ahart 2000-6-29 8539 Butte On the northwest side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC101270  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS115306  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC38683  Antirrhinum cornutum Vernon Oswald 1983-6-3 632 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  CHSC44794  Antirrhinum vexillo-calyculatum subsp. intermedium R. Banchero 1980-7-7 295 Butte Along county Line Rd 0.2 mi E of its jct with Golden Trout crossing, 1.1 mi E of Camp 18. 1280 Comment
  JEPS98474  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CHSC115363  Aphyllon purpureum Lowell Ahart 2015-3-14 19955 Butte On steep basalt slope, on the south side 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 7 miles (air) north of Oroville. 302 Comment
  CHSC12928  Aphyllon purpureum K. D. Cox 1974-4-15 187 Butte Horse Trough, about 2 mi. N of Chico Airport, on Cohasset Rd. On roadside bank. Comment
  CHSC63258  Aphyllon purpureum Lowell Ahart 1994-4-22 7286 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  JEPS115883  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC108826  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC40357  Aralia californica Lowell Ahart 1985-9-7 5106 Butte Bottom and sides of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles south-west of Forbestown. 548 Comment
  SD1140  Arceuthobium campylopodum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  NY8241  Arctostaphylos A. A. Heller 1928-2-22 14476 Butte About 2 mi below Forest Ranch , lower limit of the Transition Life Zone. In red clay. Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  CAS-BOT-BC24432  Arctostaphylos manzanita Lowell Ahart 1975-4-3 s.n. Butte Near Honcut. 76 Comment
  UCD52243  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51563 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  CAS-BOT-BC38864  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House east of Chico in the digger pine and oak belt. Comment
  CHSC3616  Arctostaphylos manzanita subsp. manzanita John Francis 1966-2-15 9 Butte 4 miles E of Chico on Hwy 32. Comment
  UC535023  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 88 Butte about 12 mi from Chico; Humboldt Grade Comment
  UC1303074  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte near Forest Ranch Comment
  UCD52296  Arctostaphylos mewukka James I. Mallory 1968-6-12 290 Butte 4 miles south of Brush Creek Ranger Station; Plumas National Forest. 640 Comment
  CAS-BOT-BC38567  Arctostaphylos mewukka subsp. truei Edward Pittman 1965-10-16 224 Butte Between Bryant Ravine and Feather Falls. 609 Comment
  CAS-BOT-BC38570  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1981-5-25 4109 Butte 27 mi. n. of Chico, state hwy. #32. 1066 Comment
  POM219427  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  SEINET10449251  Arctostaphylos patula Mary Susan Taylor 1981-5-13 Taylor 3701 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  CAS-BOT-BC48255  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC48282  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-2 s.n. Butte Pater Ahart Ranch, Honcut 48 Comment
  CAS-BOT-BC48291  Arctostaphylos viscida subsp. viscida John Thomas Howell; Gordon H. True 1967-5-9 42236 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  SBBG125911  Arctostaphylos viscida subsp. viscida L. Ahart 2010-7-27 16912 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  CHSC72253  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  SEINET10512686  Aristida oligantha Edwin B. Copel 1903-7-27 Copeland 3488 Butte Chico. on bank of sloughs. Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  CAS-BOT-BC400417  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain Comment
  CAS-BOT-BC400435  Aristolochia californica Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC109079  Aristolochia californica Lowell Ahart 2012-4-19 17885 Butte On the northwest side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 1/2 mile east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CAS-BOT-BC295836  Arnica dealbata A. A. Heller 1928-6-28 14658 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CAS-BOT-BC295840  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  CHSC36393  Arnica dealbata Kirsten Tarp 1981-8-4 68 Butte Scotts John Creek, ca. 29 mi ne of Chico. 1828 Comment
  CHSC43188  Arnica dealbata Robert Banchero 1981-8-4 641 Butte Ca 1.7 mi n of Scotts-John Rd and Jonesville Rd jct. Meadow. 1828 Comment
  CHSC46233  Arnica dealbata Pauleen Broyles 1987-7-5 1071 A Butte Ca 7 km n of Inskip and .4 km s of Bull Hill Road where it crosses Coon Creek. On n side of Coon Creek. 1530 Comment
  CHSC44894  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte About 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC65534  Arnica discoidea L. P. Janeway 1995-6-20 4802 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CAS-BOT-BC90285  Artemisia douglasiana A. A. Heller 1928-6-20 14693 Butte Butte Meadows, along Butte Creek Comment
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC426979  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC90288  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  CHSC42753  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA32828  Asarum hartwegii A. A. Heller 1939-4-10 s.n. Butte Shaded places in leafy mold on a slope in the oak belt of the transition zone near its lower limits Comment
  CHSC47042  Asarum lemmonii R. A. Schlising; F. J. Fuller 1986-7-18 4489 Butte NE of village of Feather Falls, along road to Fall River Campground. 1066 Comment
  CHSC117  Asclepias cordifolia M. Harless 1930-5-18 Butte Paradise. 548 Comment
  CHSC39421  Asclepias cordifolia J. D. Jokerst 1984-5-24 2030 Butte North Table Mountain. Edge of Beatson Hollow ca 250 meters north of Cherokee Rd. along the wooded west edge of the canyon. 350 Comment
  UCD121274  Asclepias cordifolia M. S. Taylor 1980-5-31 2775 Butte E of Coutelenc Rd at its jct with the Skyway. 609 Comment
  SEINET10496162  Asclepias fascicularis Lowell Ahart 1985-6-30 Ahart 5074 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  SEINET10923199  Asclepias fascicularis R. Carter 1966-7-6 Carter 464 Butte 7 mi E of Oroville on NE corner of intersection of Miners Ranch Road and Mr. Ida Road 244 Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  CHSC66430  Asclepias speciosa Vernon H. Oswald; Lowell Ahart 1996-6-10 7749 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  CAS-BOT-BC68879  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte Forbestown quad. On E side of Lumpkin-Laporte Rd, 1 mi N of Enterprise Bridge over sout fork Feather River, 457 Comment
  CAS-BOT-BC65911  Aspidotis densa Clarence R. Quick 1952-7-1 52 -132 Butte at junction of Mill Creek Road and Feather River Highway (Pulga) Comment
  POM219381  Aster alpigenus H. F. Copeland 1931-4-11 1534 Butte Butte Creek Meadows 1829 Comment
  CHSC31441  Aster radulinus Lowell Ahart 1980-9-10 2640 Butte Ca. 7 mi E of Millsap Bar, ca. 32 mi NE of Oroville. 1200 Comment
  CAS-BOT-BC478052  Asteraceae Grace Kermode 1898-6-3 s.n. Butte Big Chico Creek Comment
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC65199  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 mies north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC65992  Astragalus tener var. ferrisiae Vernon H. Oswald 1996-5-9 7547 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC42895  Asyneuma prenanthoides L. P. Janeway 1984-7-15 924 Butte Just W of Rogers Cow Camp. 1249 Comment
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CHSC34238  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-28 3568 E Butte On Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC69103  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA716511  Athysanus pusillus L. Ahart, Paul Maslin, John Dittes 2005-3-17 11667 Butte 50 yards S of the fence, on the E side of very poor dirt road, 1/8 mile NW of Indian Cave, 3/4 mile W of Big Chico Creek, about 4.5 miles (air) NE of Chico; Big Chico Creek Ecological Reserve. 482 Comment
  SEINET10479056  Atriplex argentea subsp. expansa Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5156 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
  JEPS90671  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road, 100 ft s of Parking Lot 5 on Rutherford Road, 0.5 mi w of Pennington Road); Gray Lodge Wildlife Management Area 21 Comment
  CHSC48286  Atriplex serenana var. serenana Vernon Oswald 1983-6-28 779 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CAS-BOT-BC146182  Avena barbata Lowell Ahart 1989-5-10 6216 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  SEINET11683505  Avena barbata Unknown 1969-1 44 Butte on Hwy 99, 6 mi N of Gridley Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  CHSC10836  Avena sativa Lowell Ahart 1962-5-20 Butte Ahart Ranch, Honcut. 39 Comment
  CAS-BOT-BC66254  Azolla mexicana M. S. Taylor; L. Ahart 1982-10-11 5162 Butte Pennington quad. Graylodge Wildlife Refuge, m side of Rutherford Rd, ca. 1/2 mi e of Pennington Rd, 21 Comment
  UC57396  Baccharis salicifolia subsp. salicifolia H. E. Brown 1896-10-2 120 Butte near Oroville 53 Comment
  CDA6270  Bacopa rotundifolia T. C. Fuller 1962-6-11 8947 Butte U. C. Experimental Station, 4 miles north of Biggs. 0 Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 Comment
  SEINET10473650  Bellis perennis Mary Susan Taylor Taylor 448 Butte Campus of the California State University, Chico. 61 Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  CHSC46016  Bergia texana Lowell Ahart 1974-7-31 570 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC109169  Betula alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, On the north side of the paved road, about 1/4 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC102077  Bidens frondosa Lowell Ahart 1974-9-30 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC94573  Bidens frondosa Lowell Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS94871  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte about 7 air mi n of Oroville (w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC102074  Bidens frondosa Lowell Ahart 1976-6-27 s.n. Butte Near Honcut 150 Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  NY31003  Blennosperma californicum C. B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 0.5 mile southeast of Butte Creek on Chico-Oroville road 57.9 Comment
  JEPS106002  Blennosperma nanum var. nanum Lowell Ahart 2004-4-1 10706 Butte On the margins of vernal pools, on the north side of Nelson Avenue, about 45 yards west of the intersection of 20th Street and Nelson Avenue, Thermalito 53 Comment
  CHSC29740  Boechera breweri subsp. shastaensis J. D. Jokerst 1980-4-17 588 Butte Top of North Table Mt, cliffs at the northern edge. 472 Comment
  CHSC33406  Boechera platysperma R. E. Preston 1981-7-8 101 Butte 10 m w of Scotts John Creek, ca. 1.0 km e of Humboldt Peak. 1928 Comment
  SEINET10453125  Boisduvalia densiflora Lowell Ahart 1985-6-17 Ahart 5058 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC34780  Bolboschoenus maritimus subsp. paludosus L. Ahart 1981-11-6 3226 Butte Small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  CHSC43742  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  CHSC39510  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Along the edge of Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CHSC38060  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CHSC4029  Brassica rapa Sadie Gualtieri 1967-3-13 Butte Collected: Chico State College in a field parking lot behind Humanities Building on corner 2nd. St., N. side. Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CHSC103727  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  CHSC10551  Briza maxima Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS117714  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  CHSC82265  Briza minor Lowell Ahart 2002-4-24 9537 Butte 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
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  SEINET10901185  Briza minor A. Arthur Heller 1914-4-14 Heller 11289 Butte Hills 8 miles north of Oroville. Comment
  SEINET10896168  Brodiaea Carl B. Wolf 1937-6-12 Wolfe 2849 Butte Sierra Nevada Foothills, 2 1/2 miles SE of Oroville on road to Wyandotte. 300 feet. Upper Sonoran:-Quercus douglas & P. sabiniana. Red clay, dry open slopes, sun. Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  UC768722  Brodiaea californica var. californica R. F. Hoover 1936-5-21 1172 Butte 3 mi n Cana Comment
  UC843925  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte near Chico airport Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
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Jun 17 2014
  SEINET3884842  Brodiaea coronaria Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -8 Butte Magalia, near Skyline road to Paradise.; 0 168 Comment
  UCD77199  Brodiaea coronaria Robert E. Preston 2003-6-13 2157 Butte North Table Mountain, along Cherokee Rd, 1.6 mi N of its jct with Oregon Gulch Rd 426 Comment
  UC1442862  Brodiaea coronaria subsp. coronaria Theodore F. Niehaus 1967-4-12 741 Butte Plumas Ave and 14th Street (along road and parking lot of Grocery Store Junction, nw Oroville); Oroville Comment
  CHSC39341  Brodiaea elegans Lowell Ahart 1983-6-26 4146 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  UC203651  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Butte Meadows Sierra Nevada, Butte Meadows 1219 Comment
  CAS-BOT-BC484556  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Sioerra Nevada at Butte Meadows 1219 Comment
  CAS-BOT-BC484562  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  CAS-BOT-BC484590  Brodiaea purdyi H. C. Cantelow 1940-5-10 3913 Butte s.w. of Oroville Hwy 24 Comment
  CHSC40272  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
  CHSC74031  Brodiaea sierrae B. Castro 1998-7-28 812 Butte Ca. 2 air mi W of Forbestown, ca. 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Sunset Hill Meadow. 929 Comment
  CHSC91667  Brodiaea sierrae Lowell Ahart 2005-7-13 12152 Butte About 100 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. 759 Comment
  JEPS50782  Brodiaea sierrae Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9280 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap (s-facing slope) 609 Comment
  CHSC96834  Bromus carinatus var. carinatus Lowell Ahart 2007-5-29 13943 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC106877  Bromus catharticus Lowell Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CDA29903  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC38797  Bromus diandrus Vernon Oswald 1983-2-23 101 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 0.2 mi w of the power lines. 97 Comment
  CHSC98973  Bromus diandrus Lowell Ahart 2008-5-12 14742 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  UCR237316  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18734 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  JEPS113901  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km N-NE of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 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-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  CHSC102428  Bromus laevipes Lowell Ahart 2009-6-19 15947 Butte On dry rocky soil, on the north side of Ten Mile House Road, just north of Guardian's Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UCD58892  Bromus laevipes P. B. Kennedy 1914-5-1 4753 a Butte Grade to Paradise. Comment
  SEINET10520252  Bromus laevipes Lowell Ahart 1977-5-2 Ahart 1347 Butte On dry rocky soil and around large rocks on the sides of North Honcut Creek. Uncommon in this area. Peter Ahart Ranch, Honcut. Foothill Woodland. 50 Comment
  JEPS118076  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 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
  UC816304  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  SEINET10791270  Bromus rubens M. Coulon 1974-4-29 Coulon 44 Butte Located approx. 80 ft. from intersection of East Ave. and Mariposa Ave on the NE side of Mariposa Ave., Chico. Along a roadside ditch. Soil very moist. Associates: Hordeum sp., Bromis mollis and Brassica sp. 61 Comment
  CHSC50850  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1990-7-19 4366 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 2011 Comment
  UCD60053  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  SEINET10843220  Bromus villosus A. Arthur Heller 1914-4-11 Heller 11280 Butte Hills 8 miles north of Oroville. Comment
  JEPS98586  Bulbostylis capillaris Lowell Ahart 2000-6-27 8513 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 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
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  CHSC3958  Calandrinia ciliata Ann Dolder 1967-4-8 Butte Ca. 100 yds e of road on Table Mt., 6 1/2 miles from Oroville. 335 Comment
  SEINET10457151  Callitriche heterophylla Mary Susan Taylor 1982-8-14 Taylor 5140 Butte T20N R8E. Jct of French Creek and 21N56, 0.5 mi e of Mooretown Ridge Rd, ca. 3 mi n of Sly Creek Reservoir Dam, ca. 4 air mi n of Strawberry Valley. 4000 ft. 1219 Comment
  CHSC65194  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC93346  Callitriche heterophylla var. heterophylla L. Ahart 1995-5-26 7574 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CHSC77412  Calocedrus decurrens Laura Bogni 1997-3-25 30 Butte West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. Magalia grove. 701 Comment
  NY18988  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SD36  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC100831  Calochortus luteus Janet Delight 1978-4-23 13 Butte 75 m w of Larkin Rd. at jct of Larkin Rd. and e entrance to Thermalito Afterbay, ca. 14.5 km n of Gridley. 46 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
  CHSC76968  Calochortus luteus Ida Ryan 1893-5-1 Butte Humboldt Road. Comment
  UC648384  Calochortus monophyllus Marion Ownbey and Ruth P. Ownbey 1938-7-13 1730 Butte 15 mi ne Chico Comment
  UCD80424  Calochortus superbus CNPS SN Foothill Team 2005-5-4 SNFN 0201 b Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  CAS-BOT-BC493345  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, 335 Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 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-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC494347  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte On dry rocky red serpentine soil, east of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC53699  Caltha leptosepala var. biflora Kirsten Tarp 1983-8-12 346 Butte Philbrook Reservoir. Near streamlet in meadow. 1706 Comment
  UC1971684  Calycadenia fremontii 1978-7-7 792 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devils Kitchen), ca. 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave 232 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
  CAS-BOT-BC106100  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Road 335 Comment
  CHSC45089  Calycadenia oppositifolia L. P. Janeway 1988-6-14 2759 Butte Little Chico Cr ca 1 3/4 air mi S of Ten Mile House, along the road to Doe Mill Ridge. NW-facing slope on SE side of cyn. 274 Comment
  CHSC75901  Calycadenia oppositifolia G. F. Hrusa; T. D. Wilfred 1997-7-3 13989 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 725 Comment
  RSA255508  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  SEINET10473678  Calycadenia oppositifolia Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4086 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  JEPS20224  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se Chico Comment
  UC596105  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se of Chico Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  SEINET10904844  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-10-13 Taylor 2276 Butte T23N R4E sec 29. Along Jordan Hill Road (Ponderosa Way on some maps), ca. 11.5 mi N of its jct with Concow Road, 2.3 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 732 Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  POM97739  Calycanthus occidentalis Mrs. R. M. Austin 1883-05 12 Butte Butte Creek. 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
  CHSC95080  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  JEPS103331  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2002-6-21 9734 Butte On a mountainside, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC38555  Cannabis sativa Vernon Oswald 1982-11-6 11 Butte Bidwell Park, Chico. Along the edge of the parking lot at Salmon Hole. 158 Comment
  CHSC2404  Capsella bursa-pastoris R. Carter 1964-3-18 49 Butte 7 mi. E of Oroville at Woodleaf St. Rt. Box 6120 between house and barn. 121 Comment
  CHSC35028  Capsella bursa-pastoris Linyi Maslin 1981-2-25 3 Butte Upper Bidwell Park near Horseshoe Lake, Chico. 72 Comment
  CHSC82090  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, west of the Midway, about 1 mile north of Richvale. 30 Comment
  RSA715889  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 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-BC37884  Cardamine oligosperma Lowell Ahart 1983-3-24 3910 Butte Sutter Buttes. East bank of Woodleaf Creek above road, about 0.375 mile southwest of the Forbestown Reservoir. 450 Comment
  CHSC100966  Cardamine oligosperma Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15492 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC32682  Cardamine oligosperma M. S. Taylor 1981-3-24 3444 Butte S side of Hwy 70, just w of Heinz Creek, ca. 1 mi w of Pulga. 487 Comment
  CAS-BOT-BC38056  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC31095  Cardamine pachystigma Leslie Steidl 1980-3-15 2 Butte Ca. .9 mi nw of Lumpkin Rd. on Island Bar Hill Rd and 4 ft s of Island Bar Hill Rd, 22 mi ene of Oroville. 719 Comment
  CHSC33901  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-5-15 3752 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CHSC60579  Cardamine pachystigma var. dissectifolia Vernon H. Oswald; Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Near the creek. 701 Comment
  CHSC106866  Carduus pycnocephalus Lowell Ahart 2011-5-1 17333 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
  SEINET10836545  Carex Mary Susan Taylor 1978-6-24 Taylor 1653 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  JEPS117177  Carex abrupta Lowell Ahart 2010-9-21 17200 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  HSC87283  Carex amplifolia L. P. Janeway 1988-6-14 2775 Butte Near W branch Butte Creek, 2 mi. E of Hwy. 32, at Ewalt Camp 922 Comment
  CAS-BOT-BC17902  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC51503  Carex angustata S. C. Morey 1983-7-25 626 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET7550706 Image available Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the "Lily Pond". 1700 Comment
  CAS-BOT-BC19103  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  JEPS121931  Carex aurea Lowell Ahart 2014-7-16 19677 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD140165  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butte City. Comment
  JEPS104192  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte along a small stream, on S side of Ponderosa Way, about 2 /12 road mi SW of the Ponderosa Dam, about 2 air mi NW of Forbestown; Lat. 39 deg. 32' 15.3, Long. 121 deg. 18' 19.2 578 Comment
  SEINET8215214  Carex cyrtostachya Unknown 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles southeast of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CAS-BOT-BC34952  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Ca. 0.5 mile south of Bax Hall Flat, 1 mile east of Potter Ravine, immediately north of Lake Oroville. Comment
  CAS-BOT-BC19849  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2506 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  HSC96354  Carex feta L. P. Janeway 2003-6-8 7818 Butte Flea Valley, meadow at head of Concow Creek 1116 Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  SEINET10650513  Carex feta Lowell Ahart 1987-5-6 Ahart 5544 Butte On damp to dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC21241  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  CHSC42949  Carex fracta Lowell Ahart 1987-7-8 5797 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  SEINET4292216 Image available Carex fracta Unknown 2006-1 13068 Butte 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. Comment
  SEINET7559369 Image available Carex fracta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11398 Butte Ca 7.5 mi NE of community of Butte Meadows, along road to Humboldt Summit, ca 0.8 road mi S of (downslope from) Humboldt Summit. 1914 Comment
  CHSC101144  Carex gracilior Lowell Ahart 2009-5-15 15710 Butte East bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  UCD140427  Carex heteroneura L. P. Janeway 1986-9-1 1827 Butte east end of Philbrook Reservoir. 1691 Comment
  RSA0116106  Carex hirtissima Lowell A. Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  SEINET4286153  Carex hoodii Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir. Comment
  SEINET4286140 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 B Butte Just east of Philbrook Resevoir. Comment
  SEINET7562371 Image available Carex infirminervia Robert F. C. Naczi, Lawrence P. Janeway 2004-7-23 10516 Butte Ca 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1695 Comment
  CHSC52913  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3019 Butte Forest floor between the Humboldt-to-Humbug Road, Butte Creek House, and Humbug Road. 1798 Comment
  CHSC94260  Carex integra Lowell Ahart 2006-7-16 12990 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA30227  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley.; Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. Comment
  JEPS105629  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring 1519 Comment
  CHSC45081  Carex lemmonii V. Oswald; L. Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  CHSC69057  Carex lemmonii Lowell Ahart 1997-8-1 7777 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
  SEINET10710071  Carex lemmonii Vernon H. Oswald 1988-6-17 Oswald 3403 Butte T20N R7E se/ne/S13, Yellow Pine Forest. Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Small part of tufted sedge growing along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1067 Comment
  SJSU5739  Carex leptopoda Lewis S. Rose 1963-6-5 63140 Butte N Fork Feather R, Arch Rock Tunnel 487 Comment
  JEPS121959  Carex limosa Lowell Ahart 2014-7-7 19583 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC83295  Carex luzulina L. P. Janeway; B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CAS-BOT-BC32151  Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the forbestown Ditch along the dirt road, ca 2.5 mi NE of Forbestown. 853 Comment
  CHSC51511  Carex nebrascensis L. P. Janeway 1987-5-10 2044 Butte Meadow at junction of Skyway and Doe Mill/Humbug Road (just N of DeSabla Reservoir). 838 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC42384  Carex nudata Lowell Ahart 1987-5-6 5543 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  CAS-BOT-BC94041  Carex pendula Peter F. Zika 2010-5-16 24824 Butte shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Ave. and Lone Pine Ave., SW of Chico 45 Comment
  SEINET7571068 Image available Carex pendula L. P. Janeway 2004-6-20 8137 Butte Chico 7.5' quad, Sacramento Valley. South end of Chico, along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC111957  Carex praegracilis Lowell Ahart 2012-5-23 18108 Butte Along the horse trail, north ofTable 32, aabout 50 yards south of Vallombrosa Avenue, southwest of Crister Ave., Lower Bidwell Park, Chico. 70 Comment
  CHSC47137  Carex praegracilis L. P. Janeway; Vern H. Oswald 1989-4-17 3221 Butte Along E side of Butte Cr 2.4 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  JEPS104170  Carex praegracilis Lowell Ahart 2003-5-27 10221 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CHSC41300  Carex simulata S. C. Morey 1983-7-22 536 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 Comment
  CHSC44169  Carex straminiformis V. Oswald; L. Ahart 1988-7-29 3647 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC52872  Carex straminiformis L. P. Janeway; R. A. Schlising 1988-7-1 2916 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  RSA770099  Carex subfusca L. P. Janeway, B. Castro 2009-7-4 9836 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  UCSC000113  Carex subfusca H. F. Copeland 1932-8-22 s.n. Butte At spring, Butte Creek Crest Comment
  CAS-BOT-BC115684  Carex texensis L. P. Janeway 1989-6-1 3270 Butte Campus of CA State Univ, Chico. Semi-natural area on N side of Big Chico Cr, 57 Comment
  CHSC47128  Carex tumulicola L. P. Janeway 1989-5-13 3236 Butte Grassy mdw on E side of Concow Reservoir; along Concow Rd 5.2 mi N of Hwy 70. 629 Comment
  CHSC33772  Carex vernacula J. D. Jokerst; L. Ahart, M. S. Taylor, H. Wurlitzer 1981-7-31 1040 Butte Top of Humboldt Peak ca 50 meters N of summit, northern-most portion of Butte County. Comment
  CHSC52360  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2987 Butte Crane Valley (upper Big Kimshew Cr). 1569 Comment
  CHSC59009  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC43870  Carex vulpinoidea Vernon Oswald 1987-6-5 2954 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC47014  Carex xerophila Gail Kuenster 1989-6-4 Butte On top of serpentine ridge NW of and above the upper end of Magalia Reservoir. 762 Comment
  HSC104270  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands; Magalia Serpentine, Coutolenc Rd., 0.1 mi. N of Skyway Rd. 720 Comment
  CHSC46408  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC50060  Castilleja affinis Lowell Ahart 1990-3-28 6430 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CDA42889  Castilleja affinis subsp. affinis L. Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 Comment
  JEPS124250  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to old road and Highway 32, about 6 miles (air) northeast of Chico. Comment
  JEPS57364  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1923 Butte 2 mi s Naranja (along Oroville-Bangor road) 182 Comment
  JEPS3294  Castilleja applegatei subsp. pinetorum L. Heckard and J. R. Sweeney 1953-4-27 345 a Butte 23 mi ne Oroville (Feather River canyon highway) 548 Comment
  JEPS8021  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Lawrence R. Heckard 1951-8-7 3475 Butte 0.3 mi w Jonesville (at crossing of Butte Creek on road from Butte Meadows); Butte Creek 1524 Comment
  SEINET10549336  Castilleja applegatei var. fragilis Mary Susan Taylor 1980-5-27 Taylor 2729 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  SEINET10549342  Castilleja applegatei var. fragilis Mary Susan Taylor 1979-6-22 Taylor 2167 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CAS-BOT-BC255455  Castilleja applegatei var. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 Comment
  CHSC61015  Castilleja campestris subsp. campestris Lowell Ahart 1993-5-17 6950 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
  JEPS105936  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC3841  Castilleja exserta Lloyd Dunkel 1965-4-11 23 Butte In pasture, ca. 100 yards n e of Cactus Ave. at Manzanita Ave., Chico. 32 Comment
  CHSC43167  Castilleja exserta Douglas Rand 1978-4-12 17 Butte Ca. 2.5 mi se of Municipal Airport and 1 mi nw of Pleasant Valley High School. 60 Comment
  CHSC90141  Castilleja exserta subsp. exserta Dennis Chambers 1981-4-24 16 Butte Cal State Chico Range approximately 1.7 mi north on Meridian Road off of Hwy 99, east 0.7 mi on north side of road. 65 Comment
  JEPS124004  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC721677  Castilleja lacera A. A. Heller and H. E. Brown 1902-5-6 5459 Butte near Clear Creek; Berry Canyon Comment
  UCD122598  Castilleja lacera W. R. Powell 1968-5-16 1503 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  POM43182  Castilleja subinclusa C. C. Bruce 1897-05 1939 Butte Little Chico. Comment
  UC886575  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  UC403964  Catalpa speciosa C. H. Shinn 1897-1 Butte Chico Forest Station Comment
  CAS-BOT-BC48818  Ceanothus cuneatus A. A. Heller 1914-3-19 11210 Butte Canyon of Big Chico creek 76 Comment
  RSA20877  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  UCD111787  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte E side of Truex Road, 1/2 mile south of its junction with Highway 70, 7 miles north of Oroville. 304 Comment
  CAS-BOT-BC48815  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 DOB 815 b Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek 243 Comment
  UC177593  Ceanothus cuneatus var. cuneatus H. M. Hall 1914-8-2 9831 Butte foothills near Bidwell Bar (near Mt. Ida Ranch), Sierra Nevada Mts. Comment
  CAS-BOT-BC50813  Ceanothus integerrimus Lewis S. Rose 1955-6-15 55099 Butte Paradise 518 Comment
  CHSC101156  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A 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
  CHSC45729  Ceanothus integerrimus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14km ne of Chico municipal airport. 500 Comment
  CHSC64129  Ceanothus integerrimus Michael Deal 1992-4-19 5 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  HSC18286  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather River Canyon, Pulga 488 Comment
  RSA399895  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  SEINET13945935 Image available Ceanothus integerrimus Lewis S. Rose 1955-1 55099 Butte Paradise; 1700 ft alt. 518 Comment
  OBI10318  Ceanothus lemmonii H. E. McMinn 1946-5-11 5512 Butte One mi E of Forbestown Comment
  CHSC86133  Ceanothus prostratus John Dittes; Josephine Guardino 2002-6-21 621 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  RSA113231  Ceanothus tomentosus E. K. Balls, Lee W. Lenz 1955-5-13 20688 Butte Paradise, on road from Oroville to Magalia 579 Comment
  CHSC20725  Ceanothus velutinus M. S. Taylor 1975-8-31 898 Butte Scattered on n side of Humboldt Rd, ca. 3 ft w of Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC62371  Celtis B. Castro 1990-5-6 424 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, ca 200 ft S of a branch of Comanche Creek (or 'Edgar Slough'). along the entrance road ca 300 ft W of the main office building, at the interface betweeen a riparian and orchard environment. 70 Comment
  CDA34618  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  CDA31996  Centaurea melitensis L. Ahart 2008-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, 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 Comment
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CHSC3362  Centaurea solstitialis M. Gregg 1966-5-7 161 Butte Approx. 5 miles north east of the Skyway on Humbug Rd. Comment
  CAS-BOT-BC284506  Centaurea solstitialis John Thomas Howell 1959-9-20 34677 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CHSC37401  Centaurea stoebe subsp. micranthos R. Preston; R. Schlising 1982-8-26 4375 Butte N and e of De Sabla and Lovelock at 'Doon Camp' just n of Little West Fork of Feather River. Roadside. 865 Comment
  JEPS118664  Centaurea stoebe subsp. micranthos L. P. Janeway 2010-8-5 10136 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N48 (closed) about 300 m south of Milsap Bar Road; 1.1 km northwest of Middle Fork Feather River and 2.7 km southeast of Brush Creek (town). Comment
  CHSC650  Centaurium tenuiflorum R. M. Staley 1952-7-4 Butte Honey Run. 304 Comment
  RSA715892  Cerastium glomeratum L. Ahart 2005-4-14 11715 -A Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10535924  Ceratophyllum demersum Lowell Ahart 1991-9-14 Ahart 6718 Butte 1-2 feet deep in a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CAS-BOT-BC179512  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of Sierra near Forest Ranch. Between Chico and Forest Ranch, 14 mi from Chico. 609 Comment
  RSA754857  Cercis occidentalis L. Ahart 2009-4-26 15620 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  SFV1803  Cercis occidentalis M. L. Vincent 1961-3-30 24 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  CHSC50100  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-24 4171 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 286 Comment
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC118037  Chamaemelum fuscatum Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 234 Butte Off Hwy 70 between Honcut and Durham near prune orchard. 45 Comment
  CHSC113525  Chamaesyce maculata Lowell Ahart 2014-9-23 19879 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  JEPS103448  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS117556  Chamaesyce maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico 60 Comment
  CDA35251  Chamaesyce ocellata T. C. Fuller 1962-6-11 8948 Butte Northwest corner of Pentz Rd. and Hwy 99E to Biggs, 9.4 miles southeast of Chico. 0 Comment
  UC765099  Chamaesyce ocellata R. F. Hoover 1938-8-2 3716 Butte 13 mi s Chico Comment
  CHSC112596  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2013-9-5 19021 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  JEPS115729  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CAS-BOT-BC69447  Cheilanthes gracillima Mrs. H. C. Cantelow 1941-5-18 s.n. Butte 1.5 mi. w. of Jonesville, on road to Gibsonville. 1615 Comment
  SEINET10529916  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2709 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC113101  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC69680  Chenopodium pratericola Vernon Oswald 1987-6-15 3002 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  POM161685  Chimaphila menziesii E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  CAS-BOT-BC497800  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 miles east and 1 1/2 miles north of Honcut. 60 Comment
  SEINET10472639  Chlorogalum pomeridianum Mary Susan Taylor 1975-3-10 Taylor 406 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC102377  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2009-6-19 15946 Butte On the west 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
  JEPS55717  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 821 Butte about 3 mi e Paradise (at junction of Dendelar Circle and Steam Road) Comment
  CHSC97034  Chondrilla juncea L. P. Janeway 2007-7-11 9113 Butte Northern High Sierra Nevada. along the southeast edge of Oroville-Quincy Hwy 0.6 km southwest of 4-Mile Ridge Road. 1006 Comment
  JEPS119999  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  RSA768994  Chorizanthe polygonoides var. polygonoides L. Ahart 2010-5-16 16705 Butte Open pasture field about 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 381 Comment
  CHSC12738  Chorizanthe stellulata M. S. Taylor 1974-5-20 236 Butte Scattered patches ca. 50 ft n of Skyway to Paradise, ca. 6 mi e of Chico. 76 Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  SEINET10454839  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2441 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
  CHSC26652  Cichorium intybus M. S. Taylor 1977-11-10 1528 Butte Ca. 1 mi E of jct of Nelson West Rd and Chico-Butte Hwy, on N side of Nelson West Rd, ca. 23 mi S of Chico. 30 Comment
  CHSC34138  Cicuta douglasii L. Ahart 1981-9-19 3184 Butte Along the edge of Feather River, ca. 100 m s of Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  UC1122351  Circaea alpina subsp. pacifica P. L. Johannsen 1936-7-17 942 Butte 3 mi. s.e. Butte Meadows; Lassen Nat'l Forest, Paynes Creek Quad. Comment
  SEINET10453140  Circaea alpina subsp. pacifica Lowell Ahart 1983-8-16 Ahart 4293 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
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  UC1609301  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte about 1 mi se Snow Mountain (s side of dirt road) 1981 Comment
  CDA1192  Cirsium douglasii var. breweri P. Bert 1990-7-31 s.n. Butte 3.5 mi. NE of Butte Meadows on Humboldt Summit Rd., near Cherry Hill Campground. Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  UC177595  Cirsium douglasii var. breweri H. M. Hall 1914-7-30 9816 Butte n Butte County Sierra Nevada Mountains 1524 Comment
  SEINET5506180 Image available Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  UC397531  Cirsium vulgare E. Bleopelaud 1929-7-1 Butte Jonesville 1650 Comment
  CAS-BOT-BC228747  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CAS-BOT-BC228759  Cistanthe umbellata Dr. Barton W. Evermann 1917-7-1 s.n. Butte Between Oroville & Chico Comment
  UC1716063  Cistus salviifolius M. S. Taylor 1975-5-6 561 Butte along creek between bridge connecting Holt Hall and Butte Hall, and bridge connecting Holt Hall and Chemistry Building California State University, Chico Comment
  CHSC35142  Clarkia arcuata R. Schlising 1980-6-12 3688 Butte NW part of county, 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 Comment
  CHSC71184  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC90249  Clarkia arcuata D. R. Rioux 1989-4-8 8 Butte Vic. Salmon Hole, Upper Bidwell Pk., ca. 3 mi e of Chico Municipal Golf Course. 106 Comment
  CAS-BOT-BC163545  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte On the stony slope back of the Salmon Hole 152 Comment
  CHSC89905  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  CHSC10748  Clarkia concinna subsp. concinna Lowell Ahart 1966-5-17 Butte Honey Run Road, near Chico. 152 Comment
  CAS-BOT-BC164518  Clarkia gracilis subsp. albicaulis Lowell Ahart 1968-5-21 s.n. Butte West of Magalia 1000 Comment
  CHSC1102  Clarkia gracilis subsp. albicaulis M. Underhill 1952-7-2 Butte 304 Comment
  RSA699539  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at roads closest point to Big Chico Creek. 216 Comment
  RSA18623  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-5-14 8663 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UCD104577  Clarkia mildrediae G. F. Hrusa; T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada. Plumas National Forest. Immed. S of Rogers Cow Camp on Highway 162. 1150 Comment
  CAS-BOT-BC163275  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap 277 Comment
  CHSC39034  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 mi SE of Stirling City, on the west side of the West Branch of the Feather River. Along the edge of the dirt road. 1100 Comment
  LA206073  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 760 Butte Hwy 24, 2.0 mi S of Arch Rock on Feather River Comment
  CHSC70740  Clarkia mosquinii L. P. Janeway 1994-6-23 4671 Butte Pinkston Canyon Road about 400 ft east of Concow Road. Southwest-facing road cutbank. 563 Comment
  JEPS102944  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. Burned area 655 Comment
  UC1461633  Clarkia mosquinii E. Small 1967-7-19 178 Butte 0.2 mi e Enterprise (along rd to Oroville; site inundated by Oroville Res. in 1968, 1.2 mi w of South Fork Bridge, S. Fork Feather River) 182 Comment
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  CAS-BOT-BC172535  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte S.W. of Oroville Comment
  POM202653  Clarkia purpurea subsp. purpurea J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CAS-BOT-BC163653  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CAS-BOT-BC164794  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill 396 Comment
  SEINET3346343 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  UC1186584  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -121 Butte 11.9 mi ne Chico (Highway 32) Comment
  CAS-BOT-BC164797  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing rocky cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill 512 Comment
  UC1186581  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -118 Butte Tehama-Butte County Line and Highway 32 Comment
  UCD104987  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  CHSC87565  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a look out point). 365 Comment
  SEINET516348  Claytonia exigua subsp. exigua Lowell Ahart 1985-1 4859 Butte Growing on damp bare broken disturbed serpentine W of Lunt Rd., about 1/2 mi. N of the intersection of Lunt Rd. and Hwy. 70. 518 Comment
  CAS-BOT-BC32912  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 km E of the Jonesville Hotel, above S bank of Jones Creek 1550 Comment
  RSA0059516  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Road. Where a main tributary joins Butte Creek. 1500 Comment
  SEINET10674969 Image available Claytonia palustris John R. Swanson 1959-7-4 Swanson 490 Butte Butte Co., Jonesvile, marshy, sloping, stream-fed meadow above south bank of Jones Creek. 0.4 km. east of the Jonesville Hotel. 1550 Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  CHSC103969  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2010-5-7 16614 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CAS-BOT-BC443704  Claytonia rubra Lowell Ahart 1982-6-4 3540 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  SEINET10830265  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3432 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC443766  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Near Magalia Comment
  CHSC11076  Collinsia heterophylla Lowell Ahart 1961-5-4 Butte Along Humbug Road, Chico. 152 Comment
  CHSC43173  Collinsia parviflora R. Banchero 1980-6-2 184 Butte 8.2 mi ne of jct of Humbolt Rd and Hwy 32. 1463 Comment
  UC1521808  Collinsia sparsiflora var. collina Lowell Ahart 1984-4-3 4537 Butte 1 mi N, 2.7 mi E of Honcut; Peter Ahart Ranch, N Honcut Creek 50 Comment
  CHSC39299  Collinsia tinctoria Lowell Ahart 1983-7-29 4249 Butte 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1000 Comment
  JEPS94771  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 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
  SEINET10548312  Collinsia tinctoria Mary Susan Taylor 1981-6-19 Taylor 3959 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  CHSC39926  Comandra umbellata subsp. californica M. S. Taylor; V. Oswald 1984-4-4 5373 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  UC1609146  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1993-4-21 5292 Butte 2.25 air mi nw of Magalia (on w side of Middle Butte Creek Trail, Ponderosa Way); Middle Butte Creek Trail, Ponderosa Way 731 Comment
  SEINET10544538  Comandra umbellata subsp. californica Mary Susan Taylor 1978-5-6 Taylor 1588 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET12230318  Comandra umbellata subsp. californica M. S. Taylor, Oswald, V. 1984-1 5373 Butte T22N R2E nw sec 25. Along Humbug Rd, 0.5 mi E of Honey Run Covered Bridge, 6 air mi E of Chico 183 Comment
  SEINET10454741  Conium maculatum Mary Susan Taylor 1981-5-18 Taylor 3806 Butte T21N R1W Chico quad. Along River Rd, near bridge over slough ca. 5 mi SW of Chico. 120 ft. 36 Comment
  CHSC94160  Corallorhiza maculata Lowell Ahart 2006-6-24 12853 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  CHSC102735  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-8-3 16253 Butte On the west side of Ten Mile House Road, jabout 30 yards east of Big Chico Creek, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 234 Comment
  CHSC51014  Cordylanthus pilosus var. tenuis Lowell Ahart 1990-8-15 6589 Butte On the east side of the Enterprise Boat Launch Area Parking area, about 1/2 miles north-west of the Enterprise Bridge across Lake Oroville. 335 Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC62587  Cordylanthus tenuis subsp. tenuis B. Castro 1993-8-5 494 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, abundant along road edges of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC63246  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  UC195372  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  CHSC50830  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1990-7-19 4365 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.3 mi west of the Plumas County line. 2011 Comment
  CAS-BOT-BC210520  Cornus sessilis Clarence Quick 1940-7-20 s.n. Butte Big Bar Mt., E. of Feather River at Pulga; from Big Bar Lookout 2-3 miles towards Brush Creek Comment
  CHSC20127  Cornus sessilis M. S. Taylor 1975-5-2 550 Butte Along dirt rd. ca. 1/4 mi w of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  UCD169337  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte About 5 miles (air) southwest of Stirling City, about 2 1/2 miles (air) southeast of Forest Ranch, about 1 mile southeast of the bridge across Butte Creek, on the west side of Doe Mill Road. 713 Comment
  CDA1914  Cortaderia selloana L. Ahart 2000-9-2 8678 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  JEPS115694  Cotoneaster pannosus Lowell Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CAS-BOT-BC427626  Crassula aquatica Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC65421  Crassula aquatica Vernon Oswald 1988-3-16 3258 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves for Durham Mutual Ditch. 67 Comment
  CHSC82214  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 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
  CHSC54379  Crassula connata M. Bailey 1991-3-30 557 Butte Butte College Campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  RSA715961  Crassula connata L. Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC46742  Crassula tillaea Lowell Ahart 1974-4-7 340 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS124167  Crassula tillaea Lowell Ahart 2015-3-26 19967 Butte About 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC82270  Crataegus S. Posner 1972-9-23 Butte Garden behind apartment complex at 725 Nord Ave., Chico. Comment
  CHSC109531  Crepis pleurocarpa L. P. Janeway 2012-6-23 10890 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC40476  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 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
  UCD130979  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte west side of Ponderosa Way (Rim Rd.) under PGE lines, 1.1 miles north of its junction with Hwy 70 at Jarbo Gap. Comment
  CHSC108167  Croton setiger L. P. Janeway 2011-8-17 10655 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 1.0 km east-southeast of the top. Common on old roadbeds mostly reverted to natural habitat; occasionally scattered throughout the opening. 710 Comment
  CHSC62453  Croton setiger L. P. Janeway 1993-9-7 4584 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC21785  Crucianella angustifolia Robert A. Schlising 1974-5-19 3131 Butte 3 mi S of jct Neal Road and Skyway in Paradise. Comment
  CHSC62495  Crucianella angustifolia B. Castro 1987-5-18 96 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 445 Comment
  JEPS115618  Crucianella angustifolia Lowell Ahart 2009-5-15 15706 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA718311  Crucianella angustifolia L. Ahart 2006-6-9 12645 Butte On the S side of the service road to Bardees Bar along the N Fork of the Feather River. About 1/8 mile E of Hwy 70. About 2.75 miles (air) SW of Pulga. 436 Comment
  CHSC94588  Crypsis alopecuroides Lowell Ahart 2006-9-11 13302 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC47612  Crypsis schoenoides Lowell Ahart 1984-8-19 4788 Butte In an area where gravel is removed, north of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC97715  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 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
  RSA726439  Crypsis schoenoides L. Ahart 2007-10-31 14514 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  UC1100331  Crypsis schoenoides Herbert L. Mason and Verne Grant 1946-8-14 13037 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  JEPS108768  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  JEPS87166  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  SEINET10877146  Cryptantha affinis Lowell Ahart 2007-5-29 Ahart 13926 Butte T21N, R6E, Section 28. Normal size plants, on dry rocky soil, near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. Foothill Woodland. 637 Comment
  SD6774  Cryptantha affinis Daniel Cleveland Jul 1882 Butte Comment
  SEINET10497263  Cryptantha affinis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4184 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  POM264772  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10935928  Cryptantha intermedia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4742 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC68066  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC51257  Cucumis melo Lowell Ahart 1990-10-5 6629 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bidge across Lake Oroville. 228 Comment
  CAS-BOT-BC85566  Cupressus macnabiana C. B. Wolf; E. R. Johnson 1934-10-5 6160 Butte Sierra Nevada Foothills, At Magalia 701 Comment
  CHSC3600  Cupressus nevadensis Gerry Carrauthers 1966-3-5 30 Butte 1/2 mi W. of 99E. Freeway on Highway 32. E. of city of Chico. Comment
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Jul 25 2018
  POM183161  Cuscuta californica H. F. Copeland 1930-8-26 1326 Butte Jonesville, above hotel. 1677 Comment
  CHSC48360  Cuscuta californica var. californica V. Oswald 1988-5-25 3339 Butte Just nw of intersection of Pennington Rd. and Rutherford Rd. at Gray Lodge Waterfowl Management Area. 21 Comment
  CHSC112043  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On Xanthium strumarium. On dry disturbed red soil, on the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Cental House Road, about 2 miles (air) northwest of Honcut. 35 Comment
  CHSC105271  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC46288  Cuscuta howelliana Vernon Oswald 1989-5-17 3774 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  JEPS94766  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte about 7 air mi n of Oroville (North Table Mountain, e of the fence, e of the cow chute and on the e side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  JEPS47094  Cuscuta indecora A. A. Heller 1914-8-11 11677 Butte Chico Comment
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC102156  Cuscuta pentagona Lowell Ahart 2009-8-13 16270 Butte Collected on Melilotus albus and Artemesia douglasiana, on dry rocky soil, at the southeast side of the diversion structure that controls Mud Creek diversion and Lindo Channel, norhteast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 Comment
  RSA253213  Cycladenia humilis A. A. Heller 1938-7-20 15275 Butte High ridge betw Inskip and chaparral. 1524 Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38803  Cynodon dactylon Vernon Oswald 1983-6-18 708 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC5966  Cynodon dactylon M. MacArthur 1968-6-17 216 Butte Ca. 5 ft SE Big Chico Creek and S of Headhouse, Chico State College campus. 60 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
  CHSC38273  Cynoglossum grande Vernon Oswald 1983-2-14 72 Butte Upper Bidwell Park, Chico, ca. 300 ft. n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). 256 Comment
  UC907516  Cyperus albomarginatus John E. Chattin and Carroll Ferrell 1946-10-15 Butte 8 mi. n.e. Butte City 30 Comment
  JEPS110333  Cyperus bipartitus Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UC1100549  Cyperus difformis Herbert L. Mason and Verne Grant 1946-8-14 13024 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CDA34640  Cyperus eragrostis L. Ahart 2009-6-3 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC10559  Cyperus eragrostis Lowell Ahart 1969-9-24 34 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC87074  Cyperus eragrostis L. P. Janeway, C. A. Janeway 1986-9-14 1864 Butte Pine Creek Landing 40 Comment
  CAS-BOT-BC114604  Cyperus eragrostis James D. Jokerst 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, ca 3 mi NW of the Oroville Quincy Hwy, 700 Comment
  CAS-BOT-BC114383  Cyperus erythrorhizos Lowell Ahart 1981-9-19 3191 Butte Cresta Power House. Comment
  CAS-BOT-BC114377  Cyperus erythrorhizos Forman Taylor McLean 1921-9-25 11 Butte Weed on rice dykes. Wilson. Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  RSA724967  Cyperus flavescens L. Ahart 2006-10-8 13429 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 Hwy 70, about 0.5 mile north of the Cresta Power House. 610 Comment
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  CHSC82170  Cyperus niger L. Ahart 1974-11-9 674 Butte Along edge of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94763  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC25403  Cyperus rotundus M. P. Hayes 1977-9-8 55 Butte In flower bed at s end of Modoc Hall, behind Bidwell Mansion on California State University, Chico campus. 76 Comment
  CAS-BOT-BC114078  Cyperus squarrosus Ira L. Wiggins 1928-9-9 3335 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CAS-BOT-BC114081  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  JEPS95982  Cyperus squarrosus Lowell Ahart 1999-10-28 8302 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC71404  Cyperus strigosus Lowell Ahart 1998-7-18 8040 Butte Margins of a small stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS88227  Cyperus strigosus Vernon H. Oswald and Lowell Ahart 1996-6-10 7730 Butte at n. end of Riparian Sanctuary Sacramento River Nat'l Wildlife Refuge (Llano Seco Unit, U.S. Fish and Wildlife Service parcel between 7 mi. Lane and Sacramento R.); , Llano Seco Unit 28 Comment
  CAS-BOT-BC110841  Cyperus vegetus A. A. Heller 1939-8-26 15479 Butte River Road west of Chico, Lower Sonoran Life Zone Comment
  CHSC42505  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC97182  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  SEINET10535613  Cystopteris fragilis Mary Susan Taylor 1979-7-21 Taylor 2148 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC105507  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  POM219142  Danthonia californica var. americana H. F. Copeland 1931-6-11 1558 Butte Butte Creek Meadows Comment
  CHSC30037  Danthonia unispicata L. Ahart 1980-5-17 2288 Butte Ca. 1/8 mi se of Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC99651  Darlingtonia californica H. Koeth 2007-5-7 Butte Butte Meadows, Cherry Hill Campground, hillside se ... Field redacted by CHSC, contact the data manager for more information 1326 Comment
  CAS-BOT-BC420353  Darmera peltata C. C., Mrs. Bruce 1898-2-1 2410 Butte unspecified Comment
  CHSC49433  Datura ferox Vernon Oswald 1987-8-13 3210 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  UCD126512  Datura ferox L. Ahart 1976-9-24 1208 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42478  Daucus pusillus Lowell Ahart 1987-5-6 5568 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  JEPS127023  Daucus pusillus Lowell Ahart 2016-6-4 20919 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 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
  UCD69668  Delphinium Laura Tanata 1982-4-18 24 Butte East side of road on Highway 70, 4.2 miles south of Grand Avenue exit; valley grassland community dominated by grasses, on a dry, sunny, gravel terrace; common erect herb scattered throughout, 4 1/2 dm tall, flower purple. 35 Comment
  CHSC104822  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  UCD21586  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SD1703  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville; common in the brush and open woods 1550 Comment
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  CHSC50055  Delphinium patens subsp. patens Lowell Ahart 1990-3-28 6429 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CAS-BOT-BC121622  Delphinium patens subsp. patens Alice Eastwood 1921-5-22 10567 Butte Los Vergils Comment
  CAS-BOT-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  CAS-BOT-BC16980  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Low hills 8 miles north of Oroville below the Quercus Douglasii belt. Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CHSC28858  Deschampsia danthonioides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 461 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC6095  Deschampsia danthonioides A. R. Jaegel 1968-4-21 121 Butte In ditch, 10 yds. below Horseshoe Lake, Bidwell Park, Chico. Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  SEINET10524217  Deschampsia danthonioides Vernon H. Oswald, Lowell Ahart 1988-7-13 Oswald 3577 Butte T25N, R5E nw/S16. Red Fir Forest. Road to High Lakes e of Philbrook Reservoir. Common in wet soil of a seep on a steep outcropping of metasedimentary rock on the n side of the road. 1859 Comment
  CAS-BOT-BC201743  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. On the banks of North Honcut Creek 50 Comment
  UCD63900  Desmazeria rigida L. Ahart 1979-4-28 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44385  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  SD122535  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 4710 Butte Ca., 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  UC1362282  Dicentra formosa Kingsley R. Stern 1964-4-21 2059 Butte ca 0.5 mi e Poe Power Dam (banks of Heinz Creek, s side of canyon of North Fork of Feather River); Pulga Quad., Heinz Creek Comment
  CDA36762  Dicentra pauciflora D. B. Joley 1969-7-5 270 Butte Turnoff of Humbug Rd, ca. 1.25 miles south of Humbug Summit. Comment
  SEINET516313  Dicentra uniflora Vernon H. Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi NE of Hwy 32. 1382 Comment
  SEINET10508817  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-3 Taylor 2218 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CAS-BOT-BC500064  Dichelostemma capitatum A. A. Heller 1915-3-24 11778 Butte Low grassy hills 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodacatheon and Athysanus, the first plants in bloom.. Comment
  CAS-BOT-BC500067  Dichelostemma capitatum L. S. Rose 1931-4-14 s.n. Butte Oroville Comment
  CHSC28905  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-3-1 2332 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  UCD148233  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2894 Butte Table Mtn, ca. 0.2 mi SE of where Cherokee Rd leaves oak woodland and emerges onto the mesa. 364 Comment
  CHSC21268  Dichelostemma multiflorum M. S. Taylor 1974-3-5 72 Butte Around entrance to Richardson Springs, ca. 4 mi n of Chico. 121 Comment
  CHSC89846  Dichelostemma multiflorum L. P. Janeway; B. Castro 2004-6-13 8133 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-BC501079  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  SEINET10472607  Dichelostemma pulchellum Mary Susan Taylor 1982-5-2 Taylor 4396 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  CAS-BOT-BC209036  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte North of the Oroville Grdiley Highway, about 3 miles east of Gridley 28 Comment
  CAS-BOT-BC209040  Digitaria sanguinalis Lowell Ahart 1986-11-14 5464 Butte On the bottom of teh pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-est of Oroville. 36 Comment
  UC1037341  Digitaria sanguinalis E. Wilson 1934-9-3 71 Butte Biggs Rice Station Comment
  UCD64140  Digitaria sanguinalis L. Ahart 1982-8-22 3745 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 50 Comment
  CHSC30873  Diplacus angustatus J. D. Jokerst 1979-4-2 1173 Butte Top of North Table Mt., ca 200 m S of Cherokee Rd where it intersects the E edge of section 17, (E edge of Mt). 396 Comment
  CAS-BOT-BC151919  Diplacus douglasii Lowell Ahart 1983-4-10 3923 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC32743  Diplacus grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  CHSC38703  Diplacus kelloggii Vernon Oswald 1983-3-13 156 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  CAS-BOT-BC217026  Diplacus layneae Javier Penalosa 1962-6-18 2474 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC29393  Diplacus torreyi R. A. Schlising; S. Azevedo 1980-6-13 3698 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Roads). 902 Comment
  CHSC63667  Diplacus torreyi B. Castro; R. Zabell 1989-6-8 314 Butte Ca 3 mi S of Brush Creek, ca 0.1 mi E of Bald Rock Rd. By old logging road in vicinity of meandering creeks. 1005 Comment
  CHSC93986  Diplacus torreyi R. D. Fischer 2004-6-20 767 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC49650  Disporum hookeri Vernon Oswald 1985-6-10 1820 Butte Hwy 32 0.9 mi sw of the road to Soda Springs Campground. 1097 Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  JEPS98609  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  UCD118955  Dodecatheon hendersonii M. R. Nichols 1975-4-23 5 Butte 5.6 mi e of Chico on Skyway from Hwy 99. 304 Comment
  CHSC41262  Dodecatheon jeffreyi S. C. Morey 1983-7-21 481 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1400616  Dopatrium junceum S. Galen Smith and Malcolm Nobs 1949-7-29 1085 Butte ca 5 mi w Richvale (formerly Richland) Comment
  CHSC117343  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2007-7-24 2046 Butte Sacramento Valley. Off E edge of Thermalito Afterbay, ca 1.36 air mi E of Hwy 99 and 1 mi S of Highway 162E. Just S of the Afterbay perimeter road, at NE corner of low pond (impoundmant) with willows. 43 Comment
  CHSC26815  Downingia ornatissima M. S. Taylor 1978-5-7 1609 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC52393  Downingia ornatissima Harritta Gaussoin 1980-4-22 20 Butte Southwest jct of Broyles Rd and hwy 99N, ca 13 mi N of Chico on hwy 99. 60 Comment
  RSA767797  Draba verna L. Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  CHSC102981  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
  CHSC84156  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  RSA739622  Dryopteris arguta L. P. Janeway 2008-6-22 9419 Butte Cascade Range Foothills, upper Bidwell Park, Chico (a large generally natural area) just below jct of Pine Trail and Guardians Trail 396 Comment
  SEINET10530140  Dryopteris arguta Mary Susan Taylor 1979-10-13 Taylor 2267 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  CDA25368  Dudleya cymosa subsp. gigantea L. L. Heinrichs 1971-5-27 Butte Swede Flat Road, Oroville. 0 Comment
  SEINET11934612  Dysphania anthelmintica Unknown 1981-1 3224 Butte a little W of Gray Lodge Waterfowl Mgmt HQ, ca 0.75 mi W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CHSC116141  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 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
  JEPS124153  Dysphania pumilio Lowell Ahart 2015-11-7 20618 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  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
  CHSC31698  Echinochloa crus-galli L. Ahart 1977-9-8 1564 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC40910  Echinochloa crus-galli Lowell Ahart 1985-11-7 5240 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  SEINET6836767 Image available Echinochloa crus-galli H. E. Brown 1896-10-2 114 Butte near Oroville 53 Comment
  UC1131540  Echinochloa crus-galli H. S. Yates 1936-8-14 6125 Butte 10 mi s Durham; Chico Quad. Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CDA2010  Echinochloa crus-galli var. crus-galli J. Harroun 1958-9-16 1233 -58 Butte 0 Comment
  CDA1993  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  UCD61109  Echinochloa oryzicola E. Dean; with J. Ditomaso and E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  CHSC113142  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte In a rice field, 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
  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
  CHSC76270  Eclipta prostrata Lowell Ahart 1999-9-21 8268 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC115322  Elatine Lowell Ahart 2015-4-24 20074 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC45272  Elatine californica Vernon Oswald 1988-4-18 3276 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  UCD49694  Eleocharis acicularis var. acicularis L. Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  CHSC59013  Eleocharis bella Lowell Ahart 1992-7-21 6812 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CAS-BOT-BC113451  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Ca 1/2 mi N of Kinkle Res., ca. 2 mi S of Paradise. 600 Comment
  JEPS105633  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  JEPS110400  Eleocharis bolanderi Lowell Ahart 2006-8-15 13177 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS98353  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte 4 air miles N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd N to Fall River, and the County Road) 1219 Comment
  CHSC88221  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC94423  Eleocharis decumbens Lowell Ahart 2006-8-15 13177 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC45172  Eleocharis engelmannii Lowell Ahart 1969-5-14 28 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CHSC11929  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville. In and beside the 'Lily Pond. 1750 Comment
  CHSC68432  Eleocharis macrostachya L. P. Janeway 1986-10-19 1928 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  SEINET11749733  Eleocharis ovata Unknown 1983-1 4027 Butte Peter Ahart Ranch, 2.5 mi NE of Honcut 50 Comment
  SEINET3478049  Eleocharis pachycarpa Unknown 2000-7-18 8597 Butte Oroville, Oroville, about 4 air miles southwest, about 0.5 miles west of Pacific Heights Road, Oroville Wildlife Area 40 Comment
  SEINET13711167  Eleocharis parishii Lowell William Ahart, Lowell William Ahart 2000-1 8409 Butte 2 Mi. S of Paradise (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CHSC55295  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte Drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  JEPS104218  Eleocharis quinqueflora Lowell Ahart 2003-5-28 10231 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS98613  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  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
  CDA38983  Eleocharis radicans L. Ahart 2000-9-2 8680 -A Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  SEINET13711105  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8698 Butte N of Large Pong on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC47644  Elymus caput-medusae Lowell Ahart 1979-6-2 1912 Butte Wash, in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC227299  Elymus 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
  UCD80544  Elymus elymoides CNPS SN Foothill Team 2005-5-5 SNFN 0158 a Butte City of Chico, Upper Bidwell Park, off Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  UC1133005  Elymus elymoides subsp. elymoides A. E. Wieslander 1933-6-23 323 Butte Bottle Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  UCD62600  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  CHSC97291  Elytrigia pontica subsp. pontica Lowell Ahart 2007-8-3 14404 Butte Waste area on the northwest side of Nelson Road, about 1/4 mile northeast of Seven Mile Lane, about 7 1/2 miles west of Nelson. 29 Comment
  CAS-BOT-BC165910  Epilobium John Thomas Howell 1959-9-26 35085 Butte Arch Rock, N. Fk. Feather River 457 Comment
  SEINET10453214  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1975-10-4 Taylor 954 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CDA38260  Epilobium brachycarpum G. F. Hrusa, S. Dubiel 2012-9-9 18507 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  JEPS88598  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1996-5-27 7653 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane and Sacramento R. (Sacramento R. National Wildlife Refuge, Llano Seco Unit, at s. end of Tract 2, Sanctuary II); Sacramento R. National Wildlife Refuge, Llano Seco Unit 33 Comment
  RSA724844  Epilobium canum subsp. latifolium L. Ahart 2006-9-28 13386 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 10 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC94033  Epilobium ciliatum subsp. ciliatum R. D. Fischer 2005-6-12 744 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from a wet meadow drainage ditch adjacent road/trail. 219 Comment
  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
  CHSC28746  Epilobium densiflorum R. A. Schlising 1979-9-6 3487 Butte Above Butte Meadows, along Humboldt Road, 1.5 mi S of Lassen Nat. Forest boundary and 1.1 mi N of road to Stirling City. In ditches at roadside. Comment
  CHSC70335  Epilobium glaberrimum R. A. Schlising 1982-8-31 4378 Butte N and E of Butte Meadows, off of Humboldt Road and N of Butte Creek near Cherry Hill Campground. Meadow; side of Butte Creek. 1524 Comment
  CHSC46575  Epilobium glaberrimum subsp. glaberrimum V. Oswald; L. Ahart 1989-7-12 3856 Butte Road between Inskip and Jones Meadow, at Fish Creek. In a roadside drainage. 1432 Comment
  LA206153  Epilobium obcordatum E. B. Copeland; 1931-7-13 sn Butte Jonesville, at The Summit 609 Comment
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC116208  Epilobium torreyi Lowell Ahart 2015-7-4 20268 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 500 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1252 Comment
  CHSC44621  Equisetum arvense Vernon Oswald 1984-4-16 1154 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  UC426894  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville 1500 Comment
  CAS-BOT-BC57997  Equisetum arvense Saichi Kawahara 1968-5-4 360 Butte Colusa-Hamilton City Road, 1 mi. n. of Princeton Ferry, w. bank of Sacramento River. 30 Comment
  CHSC3300  Equisetum hyemale subsp. affine M. L. Hillier 1966-4-23 Butte Above Butte Meadows. Comment
  CAS-BOT-BC57853  Equisetum hyemale subsp. affine M. S. Taylor 1983-3-13 5244 Butte Pulga quad. Community of Pulga, off n. side of Hwy 70, ca. 20 mi. ne. of Oroville. In ditch by RR tracks. 487 Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC54334  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte West of Springtown Road, near Lake Oroville. 304 Comment
  CHSC99659  Equisetum laevigatum H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows on a slope. UTM 10 628108E 4440095N. 1326 Comment
  CHSC113940  Eragrostis cilianensis Lowell Ahart 2014-7-18 19693 Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  CHSC38819  Eragrostis cilianensis Vernon Oswald 1983-6-29 792 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. In the bed of an oxbow of Chico Creek. 91 Comment
  SEINET10831621  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 Howell 34675 Butte Lower foothills, eastern outskirts of Oroville. 61 Comment
  CDA31779  Eragrostis pectinacea L. Ahart 2002-9-7 9927 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CAS-BOT-BC284082  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-7 5428 Butte East of the Feather River, north of the Oroville Gridley Highway about 3 miles east of Gridley 28 Comment
  JEPS95862  Eragrostis pectinacea var. pectinacea Lowell Ahart 1999-8-13 8152 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
  UCD65666  Eragrostis pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  CHSC105793  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-BC174177  Eremogone cliftonii Lewis Rose 1967-1-1 69075 Butte Rodgers Flat, Feather River 609 Comment
  CAS-BOT-BC131513  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls 609 Comment
  CHSC59504  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte At the end of the Enterprise Boat Launch Ramp, about 3/4 mile south of Rocky Point. 259 Comment
  UC31170  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  CAS-BOT-BC296820  Erigeron divergens Lowell Ahart 1987-5-6 5499 Butte Along the North Fork of the Feather River, near Poe Power House about 2 miles southe-east of Jarbo Gap 271 Comment
  SFV3878  Erigeron divergens M. L. Vincent 1962-4-20 217 Butte Sierra Nevada Feather River Canyon Road, 7 miles northeast of Oroville. Roadside on a rocky bank. Comment
  CHSC11839  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte Above Jonesville. 1800 Comment
  RSA774145  Erigeron lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CAS-BOT-BC295467  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC90025  Eriodictyon californicum Ross Rowland 2001-4-14 45 Butte On slope at the Skyway and Crossroads Road junction about 50 yards north of Skyway, about 1 1/2 miles south of Neal Road in Paradise. 615480mE/4400220mN/zone 10N. 429 Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC259399  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  UCD100301  Eriogonum luteolum L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CHSC39559  Eriogonum luteolum var. luteolum Lowell Ahart 1983-7-24 4205 Butte Found at the Forbestown Res., about 5 miles northeast of Forbestown. 450 Comment
  CHSC39079  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-20 4098 Butte E of Inskip and E of Jones Meadow. 1767 Comment
  CAS-BOT-BC269851  Eriogonum nudum var. pubiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC63708  Eriogonum nudum var. pubiflorum Lowell Ahart 1994-10-9 7557 Butte On dry fine broken lava on the southwest part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  CHSC44161  Eriogonum roseum Vernon Oswald 1988-7-22 3612 Butte Harter's Cherokee Ranch located on the s side of Hwy 99 between Hwy 149 and Dry Creek. Locally abundant on Cherokee gravel along the ranch road paralleling Dry Creek. 53 Comment
  CHSC110757  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Sierra Nevada. Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection with Hay 70; vertical rock face above the road. 457 Comment
  CHSC51893  Eriogonum umbellatum var. ahartii L. P. Janeway 1988-7-2 2966 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  SEINET233348  Eriogonum umbellatum var. speciosum D. Sanchez Mata, P. Rodriguez, Rojo 1997-8-16 Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC11921  Eriogonum ursinum var. ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville. 2050 Comment
  CAS-BOT-BC308156  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1945-5-12 45044 Butte Richardson Springs 304 Comment
  CAS-BOT-BC308162  Eriophyllum lanatum var. grandiflorum Frank W. Peirson 1926-6-21 6766 Butte 10 miles east of Chico on the Humboldt Road Comment
  CAS-BOT-BC308168  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC38153  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1983-5-12 1765 Butte Table Mountain. West of Phanton Falls ca. 500 meters along the south edge of Coal Cr. Canyon. 365 Comment
  UC725409  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  RSA92670  Eriophyllum lanatum var. grandiflorum F. W. Peirson 1926-6-21 6766 Butte About 10 miles east of Chico on Humboldt Road Comment
  SEINET10475230  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1981-5-21 Taylor 3776 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC4003  Erodium brachycarpum L. R. Alexander 1967-3-29 13 Butte Found 1 mi. from Chico on the left hand side of Paradise road. 60 Comment
  HSC67597  Erodium cicutarium J. P. Smith 1973-3-22 5912 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  POM88746  Erodium macrophyllum C. C. Bruce 1897-04 1932 Butte [No location information on label.] Comment
  UCR88747  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Sacramento Valley, along the Midway, 0.5 mile south of Durham 45 Comment
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Oct 10 2010
  UC1122957  Eryngium castrense F. W. Embree 1934-4-24 42 Butte 4 1/2 mi. n. & 1 1/2 mi. e. Biggs (Plot <A or G>); Marysville Quad. Comment
  UC874922  Eryngium castrense Lewis S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  CHSC113422  Erythranthe breweri Lowell Ahart 2014-7-7 19590 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC101675  Erythranthe glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC105774  Erythranthe glaucescens Christopher T. Ivey 2010-6-7 377 Butte Honey Run Road, 7.7 km NE of bridge crossing Butte Creek, in roadside ditch. 427 Comment
  CHSC51925  Erythranthe glaucescens Loren Gehrung 1987-3-29 11 Butte By small stream S of Centergap Rd on N face Butte Cr cyn. 10 mi ENE of Chico, 4 mi ENE of Covered Bridge. 292 Comment
  CHSC7109  Erythranthe glaucescens James M. Watson 1969-4-4 8 Butte 4.3 mi e of upper Bidwell Park entrance 50 yds. n of road. 213 Comment
  CHSC90149  Erythranthe glaucescens Lisa J. Newsum 1984-4-19 17 Butte Bidwell Heights Road 3/4 mi from junction with Hwy 32, east of Chico. 441 Comment
  SEINET14214276  Erythranthe glaucescens A. R. James 1963-4-20 s.n. Butte 10 miles NE of Chico. 122 Comment
  CHSC27064  Erythranthe nasuta Lowell Ahart 1978-5-1 1677 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC2266  Erythronium multiscapideum R. M. Staley 1953-7-18 Butte Rush Creek. Comment
  CHSC39632  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte 3/8 mile south-west of Forbestown Res., about 4 miles north-east of Forbestown. On the east side of Woodleaf Creek. 450 Comment
  JEPS18173  Erythronium multiscapideum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5601 Butte 0.5 mi n Magalia 731 Comment
  CAS-BOT-BC504519  Erythronium multiscapideum Lois E. Edwards 1917-4-1 s.n. Butte De Sabla 548 Comment
  CAS-BOT-BC504536  Erythronium multiscapideum John Thomas Howell 1962-6-15 37497 Butte Magalia 731 Comment
  POM219090  Erythronium multiscapideum H. F. Copeland 1928-4-3 350 Butte Near Magalia. Comment
  SEINET10469549  Erythronium multiscapideum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 A 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
  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
  CHSC31777  Eschscholzia californica L. Ahart 1975-5-12 777 Butte Peter Ahart Ranch, Honcut. On dredger pils along North Honcut Creek. 45 Comment
  CAS-BOT-BC402960  Eschscholzia californica John Thomas Howell 1976-4-2 51559 Butte Flood plain of Butte Creek on road from Chico to Paradise 60 Comment
  CAS-BOT-BC419507  Eschscholzia lobbii A. A. Heller 1913-3-9 10681 Butte Hills two miles north of Oroville Comment
  CHSC1196  Eschscholzia lobbii P. Delaplane 1965-3-30 13 Butte Along W. side of Cohasset Rd., 1/4 mi. S. W. of intersection of Cohasset Rd. and Keefer Rd. 213 Comment
  CHSC48615  Eucalyptus camaldulensis Vernon Oswald 1987-6-8 2961 Butte Butte Creek Reserve on the nw side of the creek near the Little Chico-Butte Creek Diversion Channel, ne of Hwy 99. 68 Comment
  CHSC235  Euonymus occidentalis F. Hedglin 1954-5-30 Butte Kimshew Falls by Rag Dump 5. Along streamside. 975 Comment
  CHSC34808  Euphorbia crenulata M. S. Taylor 1980-5-8 2615 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CAS-BOT-BC202424  Euphorbia ocellata A. A. Heller 1913-9-24 11143 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CAS-BOT-BC202427  Euphorbia ocellata A. A. Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC96222  Euphorbia peplus R. Fischer 2006-5-20 977 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  SEINET10841057  Euphorbia serpillifolia Mary Susan Taylor 1979-10-3 Taylor 2219 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  JEPS122258  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  RSA755268  Euphorbia spathulata L. Ahart 2009-5-15 15701 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC51352  Eurybia integrifolia Vernon Oswald 1990-7-28 4403 Butte Butte Creek Trail, ca. 2.2 mi (air) east of Forest Ranch. 533 Comment
  CAS-BOT-BC310672  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC413862  Fallopia convolvulus John Thomas Howell 1962-6-15 37463 Butte Magalia 731 Comment
  CHSC93854  Festuca Lowell Ahart 2006-5-19 12635 Butte Road gutter, 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
  CHSC49544  Festuca arundinacea Vernon Oswald 1987-10-17 3242 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. On the edge of the creek bed. 1341 Comment
  CHSC93484  Festuca californica subsp. californica Lowell Ahart 2006-5-10 12626 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
  CHSC73888  Festuca occidentalis B. Castro 1997-6-13 740 Butte Mountain House proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CAS-BOT-BC77691  Ficus carica John Thomas Howell 1961-9-22 36750 Butte Feather River Highway 3 miles from Oroville Comment
  CHSC77487  Ficus carica Anna Pinsky 1997-4-24 23 Butte Chico, Upper Bidwell Park, Salmon Hole, adjacent to Big Chico Creek. Comment
  UCD113236  Fragaria vesca L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC437079  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC52507  Frangula californica subsp. californica C. H. M. 1919-11-21 s.n. Butte Chico Comment
  HSC18389  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather River Canyon, Pulga 488 Comment
  CHSC34146  Frangula purshiana L. Ahart 1981-9-15 3151 Butte Along edge of rd, ca. 1/2 mi n of Lost Creek Reservoir, along Pinkard Creek. 1100 Comment
  SEINET7417512 Image available Frangula rubra subsp. rubra E. B. Copeland 1951-7-28 657 Butte Jonesville; W of North Willow Creek 1650 Comment
  CHSC46267  Fraxinus dipetala Vernon Oswald 1989-4-19 3738 Butte Wurlitzer Unit, Vina Plains Preserve. Growing on the north side of Pine Creek near Cana-Pine Creek Rd. 56 Comment
  HSC102799  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte About 8.5 mi. NE of Chico, south part of Upper Bidwell Park; ~0.6 mi. west of Hwy. 32, west side of South Rim Trail 255 Comment
  SEINET13943082 Image available Fraxinus dipetala Unknown 11405 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CAS-BOT-BC223474  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  UC392227  Fritillaria atropurpurea E. B. Copeland 1929-7-15 Butte Jonesville 1600 Comment
  CAS-BOT-BC130319  Fritillaria eastwoodiae A. A. Heller 1922-4-23 13618 Butte On the Feather River crossing near Yankee Hill Comment
  CHSC23539  Fritillaria eastwoodiae M. S. Taylor 1976-3-16 1028 Butte Ca. 25 ft s of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC9265  Fritillaria eastwoodiae D. C. Burns 1971-4-4 122 Butte Growing on n side of highway 70, ca. 10 yds. Up a steep bank, ca. 20 mi n of Oroville on highway 70, (30 yds. E of Jarbo Gap Cafe). 710 Comment
  HSC72756  Fritillaria eastwoodiae M. S. Taylor, D. V. Hemphill 1981-3-18 3430 Butte Ridge NNW of sawmill Peak of Jordan Hill Rd., 1.0 mi. NE of Magalia 701 Comment
  CHSC36221  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor. 350 Comment
  CHSC4005  Galium aparine E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  UC1143081  Galium bolanderi P. L. Johannsen 1936-7-28 968 Butte 2 1/4 mi n junction of Butte and Secret Creeks (Plot 11); Paynes Creek Quadrangle Comment
  UCD40396  Galium californicum Rodney Gale Myatt 1971-6-13 729 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  SEINET10902549  Galium murale Mary Susan Taylor 1978-4-14 Taylor 1551 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
  CHSC111120  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte Southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC117427  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  JEPS115614  Galium parisiense Lowell Ahart 2009-5-15 15679 Butte About 20 yards east 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 235 Comment
  UC1143092  Galium porrigens C. G. Albertus 1933-6-6 23 Butte 1/4 mi w Pentz; Chico Quadrangle 137 Comment
  CHSC37370  Galium tricornutum R. A. Schlising 1981-4-24 4233 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  POM193329  Galium trifidum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  SD4933  Galium trifidum subsp. columbianum E. B. Copeland 1930-7-6 475 Butte Jonesville, north slope, under melting snowbank 2000 Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC51011  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte Near McCabe Creek, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC91465  Gastridium phleoides Lowell Ahart 2005-7-13 12149 Butte About 20 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. 759 Comment
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  CHSC11779  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Along Butte Creek. 1650 Comment
  UCD103534  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32. Comment
  SEINET10453074  Gayophytum heterozygum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4224 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC115425  Genista monspessulana Ariana Gehrig 2013-4-30 Butte Paradise Lake, Magalia. Along pathway. 783 Comment
  CHSC3174  Genista monspessulana Robert D. Briggs 1966-4-23 RE- 129 Butte Mesquete Jct, Reservoir, 6 miles due north of Magalia. Comment
  CHSC99674  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2006-9-19 4466 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles e of Jonesville, along Humbug Road. In turf of large meadow on Butte Creek. 1767 Comment
  UC177582  Gentianella amarella subsp. acuta H. M. Hall 1914-7-22 9770 Butte near Jonesville (meadows on Willow Creek); Willow Creek 1554 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  SEINET10495130  Geranium molle Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4284 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CDA31943  Geranium purpureum L. Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC38593  Gilia tricolor Vernon Oswald 1983-3-9 145 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 213 Comment
  HSC23521  Gilia tricolor M. L. Hillier 1966-4-9 Butte 600 yds. NW of entrance to Bidwell Municipal Golf Course Comment
  POM181675  Gilia tricolor Williams 1927-4-11 s.n. Butte Near Chico Comment
  UC880189  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CHSC3229  Ginkgo biloba Virginia Hagaman 1966-5-5 165 Butte Chico State College Campus. Comment
  CHSC2433  Githopsis pulchella subsp. campestris R. Carter 1965-5-15 201 Butte Found on E side of Hwy. 32, 10.7 mi. NE of 99E overpass at Chico, growing on dry rocky hillside 25' from road. 304 Comment
  SEINET10460574  Githopsis pulchella subsp. campestris Robert A. Schlising 1964-6-11 Schlising 2723 Butte Few miles south of Paradise along Honeyrun Road Comment
  UCD80202  Githopsis pulchella subsp. serpentinicola CNPS SN Foothill Team 2006-5-23 SNNR 0789 b Butte BLM Parcels near Paradise. 520 Comment
  CHSC82427  Githopsis specularioides Lowell Ahart 2002-5-7 9616 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
  UCSB44171  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 4 miles west on Cherokee Rd. from Hwy 70 Comment
  JEPS115036  Glinus lotoides Lowell Ahart 2007-10-31 14512 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
  JEPS94779  Glyceria declinata Lowell Ahart 1998-6-9 7987 Butte about 7 air mi n Oroville (sw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC280564  Glyceria elata Lowell Ahart 1981-9-15 3174 Butte Along French Creek 1300 Comment
  CHSC90820  Gnaphalium palustre Lowell Ahart 2005-5-2 11753 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
  JEPS120609  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS118067  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  SEINET10547782  Gratiola ebracteata Mary Susan Taylor 1980-4-21 Taylor 2562 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  CHSC115411  Grindelia camporum M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  UC1562348  Grindelia hirsutula Vernon Oswald and Lowell Ahart 1990-7-31 4416 Butte Jeep trail between Concow Rd and Rim Rd ca 2 mi ne Concow 899 Comment
  CHSC37365  Grindelia hirsutula var. davyi R. A. Schlising 1980-8-31 3976 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  RSA4125  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  UC575328  Hackelia californica David D. Keck and J. Clausen 1935-6-25 3772 Butte 5 mi ne of Chaparral; Spring Valley Reservoir 1706 Comment
  SEINET10497305  Hackelia californica Mary Susan Taylor 1978-9-9 Taylor 1909 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC91450  Hainardia cylindrica Lowell Ahart 2005-6-12 12129 Butte Pasture field, on the north side of Evans Reimer Road, about one mile east of Pennington Road, about 4 miles (air) southwest of Gridley. 18 Comment
  CHSC86593  Hamamelis vernalis L. P. Janeway; John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CAS-BOT-BC508210  Hastingsia alba H. F. Copeland 1920-8-21 215 Butte Ridge above Butte Creek in Spring 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
  UC426989  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville 1500 Comment
  CHSC108145  Helenium puberulum Lowell Ahart 2011-8-17 17625 Butte About 40 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
  CHSC89488  Helenium puberulum R. D. Fischer 2004-8-24 440 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property. At edge of road in drainage ditch. 216 Comment
  JEPS113571  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  UC129380  Helianthella californica subsp. nevadensis Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CAS-BOT-BC314754  Helianthella californica var. nevadensis H. F. Copeland 1920-8-1 192 Butte Jonesville 1219 Comment
  CAS-BOT-BC314757  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC93866  Helianthella californica var. nevadensis Lowell Ahart 2006-6-9 12644 Butte Along the north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  SD5555  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 Butte Jonesville 2150 Comment
  CHSC97756  Heliotropium europaeum Lowell Ahart 2007-11-3 14575 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  JEPS115261  Heliotropium europaeum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC314998  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC314992  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi. W of 23N15 ca. 1.5 mi. S of its jct. with Four Trees Road, ca. 2 air mi. W of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CAS-BOT-BC309784  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  CHSC31567  Hemizonia congesta subsp. luzulifolia L. Ahart 1974-10-5 658 Butte Near Honcut. 45 Comment
  CHSC50797  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4426 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC51855  Hemizonia congesta subsp. luzulifolia L. P. Janeway 1986-10-19 1943 Butte Between hwy 99 and Thermalito Forebay Picnic Ground. 67 Comment
  CAS-BOT-BC309787  Hemizonia congesta subsp. luzulifolia Lowell Ahart 1982-9-9 3768 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  JEPS88688  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte e of Butte City Bank of Butte Creek; Road to Oroville Comment
  SEINET7014220  Hemizonia fitchii Elmer Kingsford August-1314 3383 Butte Oroville. Comment
  JEPS95917  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1999-8-13 8158 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
  UCD73011  Hesperevax acaulis Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  JEPS105997  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC90475  Hesperevax acaulis var. ambusticola Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CHSC84022  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CDA13914  Hesperolinon micranthum G. F. Hrusa, T. D. Wilfred 1997-7-3 13980 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  POM319115  Hesperolinon micranthum Patricia Wilder 1971-6-23 5183 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  UC109504  Hesperolinon micranthum Mrs. R. M. Austin 1883-1 Butte 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
  UC1609085  Heterocodon rariflorum Lowell Ahart 1993-6-20 6981 Butte about 1 mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10460590  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4727 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  SEINET12331810  Heterocodon rariflorum L. Ahart, Ahart, P. 1984-1 4727 Butte About 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE 1500 Comment
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  CHSC77444  Heteromeles arbutifolia Laura Bogni 1997-3-25 24 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  CHSC27561  Heterotheca grandiflora Robert A. Schlising 1977-9-29 3203 Butte Chico; Hwy over Lindo Channel at margin of Bidwell Park near site of Hooker Oak. Roadside. Comment
  CHSC38362  Heterotheca grandiflora Vernon Oswald 1982-10-23 5 Butte Bidwell Park, Chico. On the s edge of the Diversion Channel near its junction with Lindo Channel at the location of the Old Horse Arena. 79 Comment
  RSA0062973  Heuchera micrantha var. erubescens M. Vincent 1962-4-18 209 Butte Near Feather River at Hells Town. Comment
  CAS-BOT-BC312345  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC84717  Hieracium albiflorum L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7802 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.6 km southwest of mouth of Bean Creek. 287 Comment
  SEINET10475087  Hieracium albiflorum Mary Susan Taylor 1978-7-18 Taylor 1677 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
  CHSC86850  Hieracium scouleri var. scouleri L. P. Janeway; John Hunt 2003-7-11 7895 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 835 m north-northeast of mouth of French Creek. Along edge and cutbank of roadbed. 305 Comment
  CHSC109750  Hirschfeldia incana Lowell Ahart 2012-10-28 18533 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC280710  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows 1371 Comment
  JEPS110329  Holcus lanatus Lowell Ahart 2006-7-25 13056 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS120759  Holocarpha virgata Lowell Ahart 2013-9-5 19022 Butte On west side of La Porte Road, about 1/4 mile SW of Dunstone Drive, about 2 1/3 air miles northeast of Huncut Comment
  CHSC58888  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte On the bottom and sides of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 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
  CAS-BOT-BC285087  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2120 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC2151  Hordeum marinum subsp. gussoneanum H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E. of Chico. 121 Comment
  CHSC27569  Hordeum marinum subsp. gussoneanum Robert Schlising 1978-5-17 3261 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  CHSC6751  Hordeum marinum subsp. gussoneanum Marilyn Lee 1968-5-3 159 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  RSA451654  Horkelia fusca subsp. parviflora H. F. Copeland 1928-8-20 458 Butte Jonesville. 1524 Comment
  CHSC1558  Horkelia tridentata P. Delaplane 1965-5-4 50 Butte Found at E end of Lake Concow on Concow Road. 1219 Comment
  CHSC40328  Horkelia tridentata Lowell Ahart 1985-5-15 5001 Butte East of a small dry stream, 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC31863  Hydrocotyle umbellata L. Ahart 1977-7-8 1446 Butte Along edges of North Honcut Creek; Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10905159  Hypericum patulum var. henryi Mary Susan Taylor 1975-6-22 Taylor 781 Butte California State University, Chico, campus. 61 Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. 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
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  HSC23349  Iris hartwegii Carolyn Fante 1971-10-17 17 Butte S side of Honey Run Rd. 122 Comment
  SBBG1118  Iris hartwegii H. and M. Dearing 1938-6-21 2055 Butte 21 mi NE of Chico Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 Comment
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  CHSC112440  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  JEPS120930  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 2.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC44440  Isolepis cernua Lowell Ahart 1988-5-29 6013 Butte Small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  CHSC30733  Jensia rammii M. S. Taylor 1980-5-27 2707 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC49603  Juncus acuminatus Vernon Oswald 1987-5-18 2906 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC97299  Juncus acuminatus Lowell Ahart 2007-8-19 14488 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS98524  Juncus acuminatus Lowell Ahart 2000-5-13 8341 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC45240  Juncus balticus S. C. Morey 1983-7-28 629 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC44522  Juncus balticus subsp. ater Lowell Ahart 1988-6-23 6070 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS98459  Juncus brachyphyllus Lowell Ahart 2000-6-6 8459 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  SEINET10472237  Juncus bufonius Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4733 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC47530  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2214 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
  JEPS113863  Juncus bufonius var. bufonius Lowell Ahart 2007-6-3 13970 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir 415 Comment
  RSA715609  Juncus bufonius var. congestus L. Ahart 2005-4-18 11737 Butte 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 southwest of Chico 26 Comment
  CHSC46425  Juncus capitatus Lowell Ahart 1989-5-28 6282 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC1495748  Juncus capitatus Barbara Ertter, Jeffrey L. Strachan, and Lowell Ahart 1980-5-7 3293 Butte ca 2.5 mi nne Honcut (between Marysville and Oroville, Peter Ahart Ranch) 30 Comment
  SEINET11787470  Juncus cyperoides P. Ahart, Ahart, L. 1984-1 4692 Butte ca 0.5 mi SW of jct of Black Bart Rd & Forbestown Rd, ca 14 mi E of Oroville 650 Comment
  CDA43012  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. Comment
  CHSC38920  Juncus effusus subsp. pacificus Vernon Oswald 1983-5-27 571 Butte Upper Bidwell Park, Chico near the retaining wall along Chico Creek at the e end of Centennial Ave. In bed of the creek. 85 Comment
  HSC104028  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte About 11 mi. E of Oroville, ~ 0.75 mi. SW of the Enterprise Bridge, on the east side of McCabe Creek, below the high water line of Lake Oroville 243 Comment
  JEPS113834  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  CHSC102830  Juncus effusus var. pacificus Lowell Ahart 2009-6-30 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC49611  Juncus exiguus Vernon Oswald 1983-6-22 753 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. Near a stream in a mountain meadow. 1292 Comment
  CHSC39402  Juncus howellii L. Ahart 1983-8-16 4314 Butte In a small meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. On bottom of small stream. 1600 Comment
  JEPS110158  Juncus laccatus Lowell Ahart 2006-7-16 13012 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC312663  Juncus leiospermus Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC110147  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  SEINET11783989  Juncus leiospermus var. ahartii Unknown 1973-1 192 Butte Peter Ahart Ranch, Honcut 46 Comment
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  CHSC83897  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10093 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CHSC84256  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large 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
  JEPS104273  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10042 Butte On the high water line of vernal pools, pasture field, ca 130 yd south of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 302 Comment
  JEPS110154  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Or 354 Comment
  RSA712863  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12602 Butte About 2 3/4 miles west of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles (air) north of oroville. 280 Comment
  UC1543893  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1703 Butte ca 7 mi n Oroville; Sierra Nevada, Table Mt. 400 Comment
  CHSC44643  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1653 Butte On the bottom of a pond. Easternmost pond on the south edge of Coon Hollow. 1706 Comment
  CHSC59022  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte In a small meadow, about 1/4 mile northeast of the Carr Mine, about 2 (air) miles southeast of Snow Mountain. 1798 Comment
  CHSC64243  Juncus nevadensis S. C. Morey 1983-8-3 692 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC398899  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte above Jonesville (near Butte Creek House) 1750 Comment
  LA20056  Juncus nevadensis var. nevadensis E. B. Copeland; 1929-7-29 sn Butte near Butte Creek House, above Jonesville 1750.0 Comment
  CHSC32377  Juncus occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-4-7 562 Butte Edges of creek. E of the jct. of Upper Rocky Honcut Cr. and Swedes Flat Rd., (E of the town of Rackerby and SE of the town of Oroville). Comment
  CHSC28665  Juncus orthophyllus J. D. Jokerst 1979-11-4 400 Butte At edge of creek in large meadow. 100 mets. SE. of intersection of Butte Cr. and Humbug Rd. (Butte Creek House). 1767 Comment
  CHSC52562  Juncus orthophyllus Henricus Jansen 1989-7-15 Butte Snag Lake, meadow. Comment
  CHSC41353  Juncus oxymeris R. A. Schlising 1983-5-15 4408 Butte Richvale Vernal Pools; 0.25 mile S of junction Hwy 162 to Oroville with Highway 99; along the latter and across from Thermalito Afterbay. In pools in SE portion of area. Comment
  CHSC26748  Juncus patens M. S. Taylor; M. Hayes 1977-8-16 1446 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS116052  Juncus tenuis Lowell Ahart 2009-6-19 15919 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
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  CDA30217  Juncus usitatus L. Ahart 2009-7-4 15999 Butte On the side of a large shalow pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley Comment
  CHSC97206  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  CHSC57162  Juncus xiphioides L. P. Janeway 1987-6-27 2339 Butte Canyon of Little Kimshew Creek; along road 0.9 mi north of the Concow Road. 1508 Comment
  SEINET10531637  Juniperus californica Mary Susan Taylor 1980-2-23 Taylor 2321 Butte T21N R2E SE section 11. In Foothill savannah, ca 15 m NW of Neal Road. ca 3 km E of Highway 99, ca 1.5 km E of Neal Road dump, ca 11 km S of Chico. Comment
  CHSC31449  Keckiella lemmonii L. Ahart 1980-9-10 2644 Butte Along the edge of the rd ca. 7 mi e of Milsap Bar, ca. 32 mi ne of Oroville. Comment
  CHSC76005  Kickxia elatine Lowell Ahart; Vernon H. Oswald 1999-8-13 8132 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
  SEINET13711424  Kickxia elatine Lowell William Ahart, Lowell William Ahart 1999-1 8132 Butte 12 Air Mi SW of Chich, 2 Mi SE Ordbend, Sacramento River Comment
  CAS-BOT-BC340327  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  JEPS107967  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  SEINET10474760  Lactuca scariola var. integrata Mary Susan Taylor 1977-8-16 Taylor 1452 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC111604  Lactuca serriola Lowell Ahart 2012-8-10 18417 Butte The north side of the parking area, Bidwell Mansion, Chico. Uncommon. Urban. 60 Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  CHSC108176  Lagophylla glandulosa L. P. Janeway 2011-8-17 10658 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850 m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  HSC102686  Lamarckia aurea J. P. Smith 2013-5-5 13700 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CHSC3997  Lasthenia californica J. W. Cherry 1967-3-26 Butte On either side of Bidwell Park road, .3 mi. e. of Salmon Hole. 170 Comment
  POM219389  Lasthenia californica H. F. Copeland 1929-4-4 1542 Butte Canyon of Chico Creek. Comment
  UC1363794  Lasthenia fremontii Robert Ornduff 1958-4-19 4906 Butte 6 mi se of junction of Oroville-Chico Road with Hwy 99 e of Oroville-Chico Road Comment
  UC196261  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  CHSC8120  Lasthenia platycarpha M. Banning 1969-3-28 26 Butte 12 mi. N. Chico on Hwy 99. 76 Comment
  RSA682149  Lasthenia platycarpha Richard R. Halse 2002-3-27 6152 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca. 8 miles NW of Chico. 40 Comment
  JEPS88907  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte about 3.5 mi (air) nw Oroville (n of the corral, on the n side of the bend in Cottonwood Road, about 0.25 mi w of Highway 70) 57 Comment
  CAS-BOT-BC213346  Lathyrus jepsonii subsp. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC116512  Lathyrus jepsonii var. californicus B. Castro; Josh Brown, Melinda Carlson 2008-4-25 1732 Butte Sacramento Valley. E bank of Sacramento River, ca 0.2 mi N (upstream) of Gianelli Bridge at Hamilton City, just up from water's edge. 39 Comment
  CHSC65554  Lathyrus nevadensis var. nevadensis L. P. Janeway 1995-6-6 4774 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 749 Comment
  SBBG121311  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte Jordan Hill Rd, ca. 1.5 mi NW of Concow Crk, ca. 1.5 mi W of Concow Reservoir 358 Comment
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  JEPS113199  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir 484 Comment
  CHSC114985  Lavandula Lowell Ahart 2015-4-11 20027 Butte On the north side of Lower Honcut Road, about 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south of Oroville. 23 Comment
  CAS-BOT-BC321755  Layia fremontii A. A. Heller 1914-4-14 11292 Butte Hills 8 miles N of Oroville Comment
  CHSC30389  Layia fremontii J. D. Jokerst 1980-4-17 600 Butte Top of North Table Mt. 419 Comment
  CAS-BOT-BC321760  Layia fremontii Ira L. Wiggins 1925-3-25 1406 Butte 3.5 mi. E of Durham on States Land Colony Highway. Comment
  CHSC110402  Leersia oryzoides Lowell Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  JEPS117544  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 64 Comment
  CAS-BOT-BC215736  Lepechinia calycina Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  RSA300953  Lepechinia calycina D. C. Michener 1982-7-28 4139 Butte CA 32 ca 9.3 miles northeast of jc with CA 99 near Chico. Comment
  RSA719538  Lepechinia calycina Michael A. Vincent 2006-7-29 12881 Butte East of Chico along Rt. 32. Comment
  CHSC65989  Lepidium didymum Vernon H. Oswald 1996-5-9 7548 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC48335  Lepidium latifolium Vernon Oswald 1983-6-28 787 Butte Graylodge Waterfowl Management Area, in Parking Lot #3. Comment
  CAS-BOT-BC89873  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CAS-BOT-BC89882  Lepidium nitidum Lowell Ahart 1980-3-11 2039 Butte Peter Ahart Ranch. Honcut. 50 Comment
  SEINET11991676  Lepidium nitidum Unknown 1984-1 9 Butte ca 12 mi NNW of Chico, ca 4 mi N of jct of Meridian Rd & Hwy 99, along W side of Meridian Rd 61 Comment
  CHSC42700  Lepidium virginicum var. pubescens Lowell Ahart 1987-5-6 5511 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC569494  Leptochloa fascicularis H. S. Yates 1936-8-14 6121 Butte 3 mi nnw Nelson; Chico Quadrangle 30 Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC50811  Leptochloa fusca subsp. fascicularis Vernon Oswald; Lowell Ahart 1990-7-31 4413 Butte Lake Oroville at Vinton Gulch, ca. 0.7 mi (air) north of Cherokee. Bordering streamlet on the strand of the lake below the level of the cement ramp. 259 Comment
  CHSC32132  Leptosiphon androsaceus L. Ahart 1976-4-7 1036 Butte Hillside near the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4156  Leptosiphon bicolor R. Carter 1966-4-11 346 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds W off Feathervale, 50 yds. W of house. 243 Comment
  POM73982  Leptosiphon bicolor C. C. Bruce 1897-04 1962 Butte Butte Creek Comment
  CHSC90798  Leptosiphon ciliatus Lowell Ahart 2005-5-2 11765 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
  CDA8195  Lessingia nana T. C. Fuller 1963-7-15 10855 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  CHSC39349  Lessingia nemaclada Lowell Ahart 1983-6-30 4179 Butte Along the dirt road, about 1 1/2 miles north-east of Concow Res. 550 Comment
  RSA0118939  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  SEINET10474782  Lessingia nemaclada Mary Susan Taylor 1975-9-19 Taylor 917 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC33335  Leucothoe davisiae R. Banchero; R. Schlising 1980-6-26 275 Butte 1.1 mi s of Inskip. 4.5 mi n of Stirling City. 1426 Comment
  CHSC600  Leucothoe davisiae A. Small 1954-5-30 Butte Rag Dump, near Stirling. 1097 Comment
  CHSC1371  Lewisia rediviva J. Edwards 1937-4-1 Butte Table mountain S. of Cherokee. 426 Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  UC1736059  Lewisia rediviva var. rediviva Dean W. Taylor 1972-4-28 1396 Butte 304 Comment
  CHSC42590  Ligusticum grayi Vernon Oswald 1985-7-2 1879 Butte Scotts John Rd. 0.6 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  JEPS120070  Ligustrum sinense Lowell Ahart 2012-6-21 18208 Butte On the south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC130568  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte Near the Sacramento River west of Chico Comment
  UC600464  Lilium parvum H. F. Copeland 1931-6-9 Butte Jonesville; woods by Jones Creek 1524 Comment
  CHSC24949  Limnanthes alba V. L. Keeran 1976-4-21 9 Butte Ca. 115 m e of Cohasset Road and 1.15 km sw of Cohasset. 400 Comment
  SEINET10495210  Limnanthes alba Mary Susan Taylor 1978-5-7 Taylor 1600 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC60992  Limnanthes alba subsp. alba Lowell Ahart 1993-5-17 6951 Butte On the bottom of a large vernal pool, 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
  CHSC42483  Limnanthes alba subsp. versicolor Lowell Ahart 1987-5-12 5632 a Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  HSC86001  Limnanthes douglasii J. Hunter 1986-3-21 32 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  CHSC23531  Limnanthes douglasii subsp. rosea M. S. Taylor 1976-3-23 1030 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99 junc, ca. 11 mi n of Chico. 60 Comment
  JEPS43472  Limnanthes douglasii subsp. rosea Joan O. Danielson 1966-4-6 16 Butte Cherokee Rd 5 mi s Cherokee 609 Comment
  POM282577  Limnanthes douglasii subsp. rosea Lyman Benson 1935-3-27 6364 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  HSC85944  Limnanthes floccosa subsp. californica J. Hunter 1986-3-30 39 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC113244  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  UC1181372  Linanthus ciliatus Lewis S. Rose 1945-5-12 45029 Butte Richardson Springs 304 Comment
  SEINET10496801  Linanthus filipes Mary Susan Taylor 1980-5-27 Taylor 2677 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET12327002  Linanthus filipes R. E. Alumbaugh 1984-1 5 Butte 6.4 mi E of Hwy 99 and ca 150 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  UC907829  Linanthus parviflorus P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway up Hunnicut road) Comment
  HSC97152  Linaria dalmatica subsp. dalmatica L. Ahart 2005-11-12 12484 Butte S side of Dark Canyon Creek, 50 yds. S of train tunnels, W of Dark Canyon Rd., 2.5 mi. S of Hwy. 70 at Big Bend Rd. 294 Comment
  CHSC42119  Lindernia dubia Lowell Ahart 1986-11-9 5443 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  CHSC76427  Lipocarpha aristulata Lowell Ahart 1999-10-28 8300 Butte On the west side of a large pond, 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
  CHSC110975  Liquidambar styraciflua Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte Lawn, on the northeast side of Sycamore Pool, Lower Bidwell Park Chico. 61 Comment
  UC2026863  Liquidambar styraciflua Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC94275  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC88996  Lithocarpus densiflorus H. Gray 2003-6-3 Butte Plumas National Forest. Bald Rock trail parking area. 762 Comment
  UCSC000178  Lithocarpus densiflorus F. W. Foxworthy 1936-8-19 s.n. Butte forty miles east of Chico 1097 Comment
  CAS-BOT-BC36175  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1987-9-18 5885 Butte along the dirt road, about 1/2 mile west of Pinkard Creek, 1.5 miles west of the Sly Creek Reservoir 1097 Comment
  HSC43092  Lithophragma affine Maralyn O'Meara 1974-4-20 296 Butte Table Mtn. 305 Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way andRoad 19N19. 701 Comment
  CHSC30867  Lithophragma bolanderi J. D. Jokerst 1979-3-23 1162 Butte Table Mt. Top of North Table Mt., W edge of Mt immediately N of the Waterfalls of the S fork of Coal Canyon. 365 Comment
  CAS-BOT-BC432265  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CAS-BOT-BC435491  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile S of Lumpkin Ridge Road, about 1 1/2 miles E of Camp 18, about 8 miles E of Feather Falls 1280 Comment
  CHSC6294  Lithophragma parviflorum L. Lyons 1967-4-27 Butte On south side of Rcihardson's Spring Rd. 1.8 mi e of entrance on n Cohasset Rd. 3.5 mi from Chico. 76 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
  CHSC29243  Lithospermum californicum M. S. Taylor 1980-5-8 2603 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CAS-BOT-BC317348  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville, above hotel 1676 Comment
  JEPS107768  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east 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 48 Comment
  CHSC102424  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road. 440 Comment
  CHSC44472  Logfia gallica Lowell Ahart 1988-5-12 5998 Butte Field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC82438  Logfia gallica Lowell Ahart 2002-5-7 9609 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
  CAS-BOT-BC342389  Logfia gallica A. A. Heller 1913-10-7 11148 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CDA2232  Lolium multiflorum T. C. Fuller 1962-5-17 8722 Butte Hwy 99 E to Vina, 14.5 miles northwest of Chico. 0 Comment
  CHSC107077  Lolium multiflorum V. Lockie 2010-3-2 Butte Upper Bidwell Park. Found near the Horseshoe Lake area. 103 Comment
  SEINET10454776  Lomatium humile Mary Susan Taylor 1979-5-6 Taylor 1992 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  RSA795765  Lomatium macrocarpum L. Ahart 2012-4-20 17897 Butte West side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 miles west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  SEINET10454503  Lomatium marginatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4098 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC11859  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  SFV11725  Lonicera interrupta M. L. Vincent 1967-7-1 728 Butte Sierra Nevada Paradise. Corner De Mille Road and Harrison Road. 515 Comment
  SEINET10973161  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-4 Taylor 3593 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  SEINET10451976  Lotus humistratus Lowell Ahart 1985-5-15 Ahart 4972 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  RSA754946  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET12161683  Lotus micranthus B. L. Wiley 1975-1 6 Butte 5.4mi up Cherokee Rd from junct w/ Table Mtn Blvd 488 Comment
  JEPS87154  Lotus nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte about 0.5 mi n Flea Valley (e of intersection, about 4.5 air mi ne of Concow Reservoir) 1158 Comment
  RSA754938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-8 14716 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 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
  UC204722  Lotus purshianus var. purshianus A. A. Heller 1914-8-20 11692 Butte about 5 mi s Pentz (along Dry Creek); Dry Creek Comment
  UC1562315  Lotus stipularis Vernon Oswald and Lowell Ahart 1990-6-27 4334 Butte 0.5 mi n Coyote Gap (Four Trees Rd) 1341 Comment
  POM253436  Lotus unifoliolatus A. H. Heller 1938-7-20 15289 Butte 7 miles east of Chaparral. 1524 Comment
  RSA281672  Lotus unifoliolatus S. O. Mattoon 1978-9-25 122 Butte Middle Fork on Ponderosa For. Rd. 5 air mi. NW of Magalia. Comment
  SEINET7042709  Lotus wrangelianus A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  JEPS113700  Ludwigia palustris Lowell Ahart 2007-7-8 14275 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CAS-BOT-BC198302  Lupinus John Thomas Howell 1976-4-1 51536 Butte Table Mountain, 4-5 miles north of Oroville 304 Comment
  UC727111  Lupinus albicaulis A. A. Heller 1940-6-5 15704 Butte along the Feather River Highway between Pulga and Arch Rock Tunnel; Feather River Highway btw Pulga and Arch Rock Tunnel Comment
  UC726692  Lupinus albifrons A. A. Heller 1919-6-7 13223 Butte Snow Mountain; ; Snow Mt., Butte Co. Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10452023  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  SFV11554  Lupinus bicolor M. L. Vincent 1964-4-8 499 Butte Pentz Road, 0.25 miles west of Barnum Road. Comment
  RSA0045622  Lupinus bicolor subsp. tridentatus Lowell A. Ahart 2012-4-17 17874 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC98967  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  SEINET10484027  Lupinus densiflorus subsp. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20N R3E ne/ne sec 22. Oroville quad. NW corner of jct of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 air mi N of Oroville. Valley Grassland; 400 ft. 122 Comment
  POM253152  Lupinus densiflorus var. aureus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  CHSC37674  Lupinus latifolius M. S. Taylor 1982-8-16 5002 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  SEINET10489251  Lupinus latifolius subsp. longipes Mary Susan Taylor 1982-6-24 Taylor 4738 Butte T23n r5e center sec 30. Pulga sw quad. Corolla blue, stems 4-5 ft tall. E Side of flea mt ridge, ca 1 mi. Se of flea mt, 1.7 mi. Se of ponderosa way, ca 8.9 Mi. N of jarbo gap. With silene pratensis, verbascum thapsus, & viola Lobata. 1097 Comment
  UC1609313  Lupinus lepidus var. sellulus Lowell Ahart 1993-6-26 7042 Butte about 1/4 mi n Jackass Flat (Mooreville Ridge, about 1 1/4 mi (air) nw of Lost Creek Reservoir); Mooreville Ridge, nw of Lost Creek Reservoir 1188 Comment
  CHSC40305  Lupinus microcarpus var. densiflorus Lowell Ahart 1985-5-6 7932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mi south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  CHSC33129  Lupinus microcarpus var. microcarpus J. D. Jokerst 1981-4-29 1301 Butte Adjacent to entrance road to Butte College Campus from Pentz Road. 76 Comment
  CHSC34688  Lupinus nanus M. S. Taylor 1981-5-1 3588 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  SEINET10490837  Lupinus nanus subsp. nanus Taylor 1981-5-14 Taylor 3528 Butte Oroville quad. Valley grassland, nw corner of the jct of wheelock rd and hwy 70, Ca 5 mi n of oroville. Associates: amsinckia intermedia. A migrant? (Comment by d.b. Dunn). T.21n, r.3e, sec.36 (se 1/4, ne 1/4). 137 Comment
  CHSC38507  Lupinus nanus var. apricus Vernon Oswald 1983-3-23 203 Butte Upper Bidwell Park, Chico near the N boundary between the Omicron Enclosure and the low swale to the east. 88 Comment
  CHSC117850  Lupinus nanus var. vallicola L. P. Janeway 2016-5-9 11949 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  JEPS105664  Lupinus nanus var. vallicola L. P. Janeway, John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek 287 Comment
  UC392209  Lupinus polyphyllus var. burkei E. B. Copeland 1929-7-28 Butte along Butte Creek (Jonesville); , along Butte Creek 1500 Comment
  UC726320  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte near De Sabla; near De Sabla Comment
  CHSC113511  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC436645  Luzula comosa var. laxa H. F. Copeland 1929-6-11 1244 Butte Jonesville 1524 Comment
  CHSC38295  Lychnis coronaria Vernon Oswald 1983-5-31 585 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 300 ft w of Day Camp. 91 Comment
  CHSC52224  Lycopus americanus L. P. Janeway 1988-8-16 3155 Butte Near the Sacramento River at S end of Ryan Island, ca 1/2 mi S of the Ord Ferry Rd bridge. 28 Comment
  JEPS87380  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  SEINET12194607  Lythrum salicaria Unknown 1984-1 4782 Butte ca 5 mi SW of Oroville, W of Pacific Heights Road 40 Comment
  SEINET5335609  Machaerocarpus californicus F. R. Jones 1918-5-31 s.n. Butte Near Sacramento River, Chico Comment
  POM193088  Madia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  SEINET10475204  Madia elegans subsp. elegans Mary Susan Taylor 1982-6-24 Taylor 4732 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC116988  Madia exigua Lowell Ahart 2016-6-4 20936 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
  CHSC45694  Madia glomerata Vernon Oswald 1984-7-31 1634 Butte Scotts John Creek, 0.9 mi n of 26N27. 1786 Comment
  CAS-BOT-BC342962  Madia gracilis E. B. Copeland 1931-8-14 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC342968  Madia gracilis Lowell Ahart 1982-9-13 3826 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
  JEPS108733  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  CHSC32363  Madia subspicata J. D. Jokerst; M. S. Taylor, R. A. Schlising, D. Ikeda 1980-5-18 722 Butte Top of Cohasset Ridge along the S edge above Mud Cr. Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC512737  Maianthemum stellatum C. R. Quick 1953-8-11 53 -99 Butte Rag Dump meadow south east of Stirling City Comment
  CHSC76037  Malacothrix floccifera G. F. Hrusa; T. D. Wilfred 1996-7-9 13187 Butte Sierra Nevada. Plumas National Forest. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1150 Comment
  CHSC45328  Malva neglecta Vernon Oswald 1983-10-10 1058 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC33121  Matricaria discoidea M. S. Taylor 1981-5-15 3743 Butte Jct of 22N92 and 23N00.1, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 975 Comment
  CHSC19944  Meconella californica M. S. Taylor 1975-3-10 407 Butte On bluffs overlooking Butte Creek, ca. 500 ft sw of Covered bridge, ca. 8 mi e of Chico. Comment
  CHSC2397  Meconella californica R. Carter 1965-3-14 164 Butte 457 Comment
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC42528  Medicago lupulina Lowell Ahart 1987-5-6 5524 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC21008  Medicago polymorpha M. S. Taylor 1975-4-25 504 Butte Ca. 20 mi ne of Chico on Cohasset Hwy, ca. 1/2 mi n of Horse trough. Comment
  UC600750  Melica aristata H. F. Copeland 1932-7-19 Butte Jonesville Butte Creek Canyon (Butte Creek Canyon) 1550 Comment
  UCD87273  Melica fugax H. F. Copeland 1929-6-12 s.n. Butte Jonesville. 1524 Comment
  CHSC38830  Melica torreyana Vernon Oswald 1983-3-7 135 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 300 ft e of the Golf Course. 91 Comment
  CHSC93734  Melica torreyana Lowell Ahart 2006-5-19 12632 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
  JEPS119627  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte About 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1563287  Mentha canadensis unknown 1990-10-3 6622 Butte about 1/4 mi ne Canyon Creek Bridge (across Lake Oroville, East Fork Canyon Creek, below high water line Lake Oroville); East Fork Canyon Creek, Lake Oroville 259 Comment
  CHSC50998  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  RSA4233  Mentzelia dispersa E. B. Copeland 1929-7-19 s.n. Butte Jonesville. Along Butte Creek. 473 Comment
  CHSC29229  Micranthes californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2436 Butte SE corner of jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi s of Oroville. 365 Comment
  CHSC38678  Micranthes californica Vernon Oswald 1983-1-30 53 Butte Upper Bidwell Park, Chico, along the North Rim Trail east of the power lines at about the 1120 ft. contour. Comment
  CHSC99639  Micranthes californica M. Jenkins; K. Schierenbeck 2007-3-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  UCD102799  Micranthes californica L. Ahart 1975-3-3 700 Butte Near north boundary of ranch near North Honcut Creek; Peter Ahart Ranch, Honcut. Comment
  CHSC24941  Micranthes integrifolia W. A. Vaccaro 1976-4-17 2 Butte Ca. 2.3 mi e of Centerville, on s side of Humbug Road. 128 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  UCD146243  Micropus californicus Daniel S. Park; J. P. Zabala 2010-4-10 12 Butte Table Mt. Cherokee Rd. 351 Comment
  SEINET10971130  Micropus californicus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4852 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC101287  Micropus californicus var. californicus Lowell Ahart 2009-4-17 15554 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC12125  Micropus californicus var. californicus K. O. Grigsby 1972-4-26 4 Butte In Chico city limits on Skyway, intersection of Notre Dame Blvd. 60 Comment
  CHSC33909  Micropus californicus var. californicus M. S. Taylor 1981-5-21 3775 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
  CHSC39531  Micropus californicus var. californicus Lowell Ahart 1983-6-12 4043 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  UCD134504  Micropus californicus var. californicus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CAS-BOT-BC348875  Microseris douglasii subsp. douglasii Lowell Ahart 1976-4-14 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CHSC48186  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3294 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence. 54 Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  HSC32597  Mimulus angustatus Steven Lagos 1974-4-20 15 Butte 2 mi. S of Cherokee Comment
  UC767436  Mimulus bicolor R. F. Hoover 1936-5-21 1161 Butte 7 mi n Chico Comment
  UC886107  Mimulus bicolor A. A. Heller 1915-5-28 11905 Butte near Cohasset; Sierra Foothills Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  JEPS5590  Mimulus glaucescens R. F. Hoover 1938-4-24 3248 Butte 3 mi n Chico Comment
  POM5106  Mimulus guttatus E. B. Copeland 1903-5-2 3017 Butte Chico. Comment
  SEINET12318321  Mimulus guttatus R. T. Retuta 1978-1 5 Butte ca 0.5 mi SE of Cherokee Rd, ca 5 mi of Oroville, North Table Mountain Comment
  UCD85075  Mimulus layneae Dena Grossenbacher; Marisano James 2009-6-7 1032 -b Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  UC726348  Mimulus microphyllus A. A. Heller 1938-4-14 15028 Butte summit Table Mountain 304 Comment
  POM193343  Mimulus moschatus E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  POM173736  Mimulus torreyi H. F. Copeland 1927-9-2 957 Butte Jonesville. Comment
  JEPS117548  Mimulus tricolor Lowell Ahart 2010-6-20 16820 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
  UCR227349  Minuartia californica Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  JEPS108841  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
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC31386  Minuartia douglasii J. D. Jokerst 1979-4-13 1194 Butte Top of North Table Mt., ca 200 meters N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  SEINET7067143  Minuartia douglasii A. G. Vestal 1947-4-30 s.n. Butte Lava at Table Mountain northeast of Oroville. Coordinate datum: NAD27. Comment
  CAS-BOT-BC435074  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CAS-BOT-BC219950  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CHSC39282  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte 3 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1100 Comment
  CHSC43016  Monardella odoratissima L. P. Janeway 1987-7-4 2422 Butte Last Chance Cr. Along rd to Jones Mdw 6.5 mi from Inskip. 1524 Comment
  CHSC65566  Monardella odoratissima R. Banchero 1981-6-26 530 Butte Oak Point where Keyser Ck runs through. 1487 Comment
  CHSC52229  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-22 3046 Butte Just below saddle between Coon Hollow and Chips Cr. 1920 Comment
  UC2035851  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At the Summit Jonesville 2000 Comment
  CHSC112680  Monardella sheltonii Lowell Ahart 2013-7-1 18819 Butte Edge of a dry meadow, about 30 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC43035  Monardella sheltonii L. P. Janeway 1987-6-8 2179 Butte 4.5 mi south of Big Bar Mtn (via rd). 899 Comment
  CHSC60989  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 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
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  JEPS104298  Monardella villosa subsp. villosa Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) north of Forbestown. 481 Comment
  CHSC34085  Montia chamissoi C. Glascock 1965-5-15 418 Butte Butte Meadows public campground 0.5 mi. W of Humboldt-Scout Rd. intersection. 26.1 mi ne of Chico city limits. Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CAS-BOT-BC444886  Montia fontana Lowell Ahart 1990-4-15 6462 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
  CAS-BOT-BC444890  Montia fontana L. P. Janeway 1988-6-25 2871 Butte In Coon Creek and near Bull Hill Road 1.0 mi from Skyway. 1554 Comment
  CHSC101654  Montia fontana subsp. chondrosperma Lowell Ahart 2009-4-26 15643 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the west side of Guardians Trail, about 300 yards southwest of Pine Trail, in a wet drainage. 381 Comment
  CHSC54371  Montia fontana subsp. chondrosperma M. Bailey 1991-3-8 547 Butte Butte College campus, near edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC7113  Montia parvifolia S. Armantrout 1969-5-6 5 Butte Hwy. 70, first rest stop in Feather River Canyon, across road up trail 2 mi, below water fall. Bear Creek. Comment
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC51290  Muhlenbergia filiformis Lowell Ahart 1990-10-21 6636 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UC1563268  Muhlenbergia filiformis unknown 1990-10-21 6636 Butte about 1/2 mi w Gold Flat (1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  CAS-BOT-BC274931  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  RSA755637  Myosotis discolor L. Ahart 2009-5-15 15717 Butte On the east bank of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC29221  Myosurus minimus subsp. minimus M. S. Taylor; J. D. Jokerst 1980-3-28 2398 Butte In vernal pool, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99. 68 Comment
  POM99618  Myosurus minimus var. filiformis C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UC21150  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e Chaparral House; Paynes Creek Quad., Lassen National Forest Comment
  CHSC43007  Navarretia E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC35114  Navarretia capillaris R. A. Schlising 1980-7-16 3912 Butte N part of county NE of Butte Meadows and SW of Jonesville; meadow and streamside of Butte Creek near Cherry Hill Campground. Comment
  CHSC116984  Navarretia divaricata subsp. vividior Lowell Ahart 2016-6-4 20938 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
  CHSC27048  Navarretia filicaulis Lowell Ahart 1978-7-2 1780 Butte Along Robinson Mill Road, Bangor. Near the edge of the road. 350 Comment
  CHSC45357  Navarretia filicaulis Vernon Oswald 1986-7-28 2252 Butte Hwy 32 ca. 0.1 mi s of Lomo. Roadside at base of roadcut. 1158 Comment
  CHSC47065  Navarretia filicaulis R. A. Schlising; P. Broyles 1988-7-9 4573 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  JEPS107883  Navarretia heterandra Lowell Ahart 2005-5-27 11812 Butte Pasture field, about 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  UC133921  Navarretia intertexta Mrs. R. M. Austin May 1896 171 Butte Butte Creek Comment
  SEINET7042714  Navarretia leucocephala A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on Lower Honcut Road. Sacranento Valley and hill border. Honcut quadrangle UTM Zone 10, 623717mE, 4353204mN. Comment
  RSA304498  Navarretia leucocephala subsp. leucocephala Barbara Ertter, Jeffrey L. Strachan 1980-5-5 3256 Butte Peter Ahart Ranch ca. 1.5 miles northeast of Honcut between Oroville and Marysville 30 Comment
  CHSC109731  Navarretia nigelliformis subsp. nigelliformis B. Castro 2006-5-25 1533 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  RSA717288  Navarretia pubescens L. Ahart 2005-5-28 11819 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC75393  Navarretia tagetina Jennifer Slater 1997-4-27 33 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  POM74520B  Navarretia tagetina C. C. Bruce 1898-05 1970 Butte Sloughs Comment
  CHSC48656  Navarretia viscidula Vernon Oswald 1985-5-28 1786 Butte Oroville-Quincy Hwy slightly n of Simmons Rd. Beside the road. 304 Comment
  CHSC69483  Navarretia viscidula James D. Jokerst 1992-5-19 3365 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  UC1562298  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  SEINET3156476  Nemophila exilis H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  POM65257  Nemophila heterophylla A. A. Heller, H. E. Brown 1902-5-9 11606 Butte Berry Canyon (Near Clear Creek). Comment
  JEPS3147  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big and Little Chico Creeks, Sierra Nevada foothills); Sierra Nevada foothills, btw Big and Little Chico Creeks 609 Comment
  POM65379  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  CHSC4086  Nemophila menziesii Kathy Sommarstrom 1967-4-12 21 Butte Found on left hand side of Honey Run Rd on South end of bridge next to covered bridge. 76 Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  CHSC76944  Nemophila menziesii var. menziesii Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC26848  Nemophila spatulata M. S. Taylor; M. Hayes 1978-5-24 1660 Butte Scattered on drier edges of montane meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC42103  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC25278  Ocimum basilicum K. R. Stern 1977-6-25 Butte Grown in a garden in Chico. Comment
  CHSC42230  Odontostomum hartwegii L. A. Hinman 1986-4-21 18 Butte Ca. 7 mi ne of Chico, 4 mi s of Centerville. 237 Comment
  JEPS28172  Odontostomum hartwegii A. A. Heller 1938-5-22 1510 a Butte near airport n.e. of Chico Comment
  SEINET12342943  Odontostomum hartwegii Unknown 1936-1 13408 Butte along Mud Creek near Chico Comment
  CHSC66673  Oenothera elata subsp. hirsutissima Vernon H. Oswald 1996-7-17 8065 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  CHSC98693  Olea europaea L. P. Janeway 2007-12-17 9226 Butte Northern Sierra Nevada Foothills. About 15 m east of the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68 m elevation level), about 370 m north of the railroad bridge. At base of old abandoned railroad or road cutbank. 73 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  CHSC45305  Orobanche californica subsp. jepsonii V. Oswald; R. Schlising 1988-9-12 3700 Butte Rocky ridge ca. 3 mi (air) e of Jonesville. 2026 Comment
  JEPS80619  Orobanche fasciculata M. S. Taylor 1981-5-29 3814 Butte ca. 3 air mi. s.e. Pulga (ca. 0.5 mi. n. of 22N31, Chino Ridge); Pulga SW Quad., Chino Ridge 853 Comment
  CHSC61645  Orthilia secunda Lowell Ahart 1993-9-13 7236 Butte Dry wash located near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  RSA0083241  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville. 1500 Comment
  SEINET10832402  Orthocarpus attenuatus Mary Susan Taylor 1974-5-3 Taylor 214 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  SEINET4854291  Orthocarpus bicolor Unknown 1902-5-10 5519 Butte Berry Canyon, (near Clear Creek). Comment
  SEINET519222  Osmorhiza depauperata V. H. Oswald 1998-7-8 9248 Butte Colby Mt. Lookout Rd. (26N57) 0.9 mi N of Humboldt Rd. at Jonesville. 1561 Comment
  POM86786  Oxalis albicans subsp. pilosa C. C. Bruce 1897-04 1852 Butte Butte Creek. Comment
  SEINET13711296  Oxalis laxa Lowell William Ahart, Lowell William Ahart 2003-1 10119 Butte 5.5 Mi. SW of Oroville, S of Feather River, Oroville Wildlife Area (39 Deg 27'17.8"N, 121 Deg 36'48"W) 131 Ft. 40 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
  JEPS59016  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 37555 Butte Magalia Sierra Nevada 731 Comment
  CHSC11831  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC1178  Paeonia brownii V. Holt 1941-4-2 Butte Forest Ranch. 548 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
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC1609520  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte about 6 1/2 mi ne Stirling City (about 2 1/2 mi ne of Bald Mountain); ne of Bald Mountain 1584 Comment
  CHSC83016  Panicum capillare Lowell Ahart 2002-10-17 9999 Butte Hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  RSA724812  Panicum dichotomiflorum L. Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  UC1153811  Panicum dichotomiflorum subsp. dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  CHSC6595  Papaver somniferum G. Nielson 1968-4-20 Butte Growing at 5th st. and Salem, Chico. 59 Comment
  CHSC112934  Parentucellia viscosa B. Castro 2012-6-21 1930 Butte Sacramento Valley. CA 3 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road 42 Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  CDA6398  Parentucellia viscosa L. L. Heinrichs 1971-5-26 Butte Northwest corner of Cox Lane & Palermo-Honcutt Road, Palermo. 0 Comment
  SEINET12331821  Parentucellia viscosa Unknown 1985-1 5008 Butte near Little Pump, Peter Ahart Ranch, about 2 mi N & 0.5 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  CHSC6082  Paspalum dilatatum J. Wheeler 1968-5-17 204 Butte S side of Chico Junior High School, near curb, Chico. 59 Comment
  SBBG649  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 mi N of Gridley Comment
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  UCD88967  Paspalum distichum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC32589  Pectocarya pusilla J. D. Jokerst; Jeri Donovan 1981-3-21 1259 Butte Ca 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico, in Bidwell Park). Where foothills begin their initial rise. Comment
  CHSC3535  Pedicularis densiflora John Francis 1966-4-6 83 Butte 0.3 mi from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  UCD123334  Pedicularis densiflora M. Vincent 1961-3-20 9 Butte Harrison Road and Stern; Paradise, California. 609 Comment
  HSC66079  Pellaea andromedifolia M. S. Taylor 1980-3-30 2411 Butte Salmon hole, upper Bidwell Park, Chico 244 Comment
  SEINET10971559  Pellaea mucronata Lowell Ahart 1983-3-28 Ahart 3912 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  CHSC49023  Penstemon azureus var. azureus Vernon Oswald 1984-5-21 1197 Butte Coutolenc Rd., 4.2 mi s of its jct. with the Skyway at Lovelock. 792 Comment
  NY571159  Penstemon azureus var. azureus F. W. Pennell 1940-6-5 25683 Butte Route 24; along Feather River, above Oroville; in Lassen National Forest 548.6 Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  POM193324  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  UC426950  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte above Jonesville; above Jonesville 1950 Comment
  RSA3797  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  CHSC1866  Penstemon heterophyllus var. purdyi L. Oliver; D. Sloan 1935-5-10 Butte Butte Creek Canyon. Comment
  CHSC38714  Penstemon heterophyllus var. purdyi Vernon Oswald 1983-4-18 331 Butte Upper Bidwell Park, Chico, on the north rim at a level approximating the e end of Horseshoe Lake. 152 Comment
  SBBG7173  Penstemon laetus H. and M. Dearing 1938-6-20 2049 Butte 20 mi NE of Chico 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
  CHSC26836  Penstemon newberryi M. S. Taylor 1978-6-24 1650 Butte Humboldt Summit, on Butte Co and Tehama Co line. 2133 Comment
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  CHSC32691  Pentagramma triangularis M. S. Taylor 1981-3-18 3416 B Butte S side of Hwy 70 near Pulga bridge. 487 Comment
  CHSC39815  Pentagramma triangularis Ruby Gist 1935-3-30 Butte Fern Banks. Comment
  CHSC57333  Pentagramma triangularis Robert C. Hill 1990-4-10 9 Butte Large population at intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte At end of Dark Canyon Rd, around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC46035  Pentagramma triangularis subsp. semipallida Lowell Ahart 1978-4-19 1655 Butte Along the edge of the Feather Falls trail, about 4 miles north of Feather Falls. 548 Comment
  JEPS108137  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  CAS-BOT-BC77081  Pentagramma triangularis subsp. triangularis Lowell Ahart 1980-3-26 2063 Butte Near Hurleton. 600 Comment
  SEINET13944948 Image available Perideridia bolanderi A. A. Heller 1914-1 11572 Butte Volcanic hills 5 miles east of Oroville in the Digger pine belt. Comment
  CHSC96036  Perideridia kelloggii Samantha Mackey Hillaire 2006-7-7 1233 Butte Label reads: Lat: N 39.83137385 Long: W 121.64039099 at the North. Lat: N 39.80653888 Long: W 121.64281085 at the South. Comment
  CHSC73912  Perideridia lemmonii B. Castro 1998-7-28 814 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near water-hole in center of meadow. 929 Comment
  CHSC40240  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1896 Butte Chaparral Guard Station on Humbug Rd. 2.0 mi sw of Philbrook Rd. Near a creek on the s side of the road. 1463 Comment
  CHSC74059  Perideridia parishii subsp. latifolia B. Castro 1998-7-28 815 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. 929 Comment
  CHSC48661  Persicaria amphibia Vernon Oswald 1987-7-4 3091 Butte Rancho Aquas Frias. 7-Mile Lane, 2.8 mi s of Dayton-Ord Hwy, between Chico and Butte City. Growing in a dry roadside ditch. 33 Comment
  CHSC31763  Persicaria hydropiper L. Ahart 1977-9-20 1582 Butte Peter Ahart Ranch, Honcut, along edges of North Honcut Creek. 50 Comment
  CAS-BOT-BC413705  Persicaria hydropiper Lowell Ahart 1982-10-11 3864 Butte About 1/10 mile west of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  HSC104005  Persicaria lapathifolia L. Ahart 2013-11-17 19262 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  JEPS124338  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC21144  Persicaria maculosa M. S. Taylor 1975-10-3 924 Butte Abundant in mud on Big Chico Creek, under bridge over River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC37072  Persicaria maculosa L. Ahart 1982-10-6 3845 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  JEPS120160  Persicaria maculosa Lowell Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS119525  Persicaria punctata Lowell Ahart 2011-10-29 17724 -A Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SBBG128610  Persicaria punctata L. Ahart 2012-9-28 18466 Butte middle of Big Chico Crk, ca. 30 yards W of the Freeway, Lower Bidwell Park, Chico 65 Comment
  HSC43129  Petrorhagia dubia Maralyn O'Meara 1974-4-20 282 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC39947  Phacelia cicutaria Lowell Ahart 1984-4-4 4541 Butte Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. 50 Comment
  CHSC30888  Phacelia egena J. D. Jokerst 1979-4-6 1183 Butte Top of North Table Mt, W edge of Mt. 365 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
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  RSA428106  Phacelia mutabilis M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SEINET10497019  Phacelia procera Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4207 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC31000  Phacelia purpusii M. S. Taylor; R. S. Schlising 1980-7-6 3064 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, on rocky open edge of Yellow Pine Forest. 1127 Comment
  CHSC33243  Phacelia purpusii R. A. Schlising; D. Ikeda, R. Banchero 1980-7-26 3780 Butte Along Humboldt Road, 0.6 mi N of jct with Hwy 32 at Lomo. 1219 Comment
  UCR80229  Phacelia racemosa H. F. Copeland 1931-6-9 1538 Butte Jonesville, near Jones Creek 1529 Comment
  CHSC39117  Phacelia vallicola R. A. Schlising; R. Banchero 1981-5-20 4060 Butte Lumpkin Ridge, e of village of Feather Falls. Comment
  SEINET10836231  Phalaris canariensis Mary Susan Taylor 1979-11-11 Taylor 2279 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC259045  Phalaris lemmonii Lowell Ahart 1982-5-10 3431 Butte Peter Ahart Ranch, ca. 2.5 mi. N and 1/8 mi. E of Honcut 50 Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville 30 Comment
  CAS-BOT-BC250702  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  UCR143279  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte Sacramento Valley, 7 miles west of Honcut 23 Comment
  SEINET11689144  Phalaris paradoxa Unknown 1980-1 s.n. Butte Chico Game Fish Farm 0.2 mi E of Hwy 99, 1 mi N of Hwy 149 Comment
  CHSC37552  Philadelphus lewisii T. B. Devine 1977-6-5 415 Butte 2.2 mi NE of Centerville. Comment
  CHSC37631  Philadelphus lewisii T. B. Devine 1979-10-5 598 Butte Feather River Canyon, 3/4 mi S of Arch Rock Tunnel, S of Hwy 70 adjacent to PG and E rest stop, along Bear Ranch Creek. 548 Comment
  CAS-BOT-BC250865  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground 1524 Comment
  SEINET10657662  Phleum pratense Lowell Ahart 1988-6-23 Ahart 6061 Butte Timothy. On damp rocky soil, along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville, Foothill Woodland. 259 Comment
  CHSC115491  Phlox speciosa subsp. occidentalis 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. 747 Comment
  CAS-BOT-BC134916  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magalia. Sierra Nevada 731 Comment
  SEINET10969533  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1975-5-9 Taylor 569 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  SEINET10492816  Phoradendron bolleanum var. densum Mary Susan Taylor 1975-9-19 Taylor 918 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC3253  Phoradendron densum Virginia Hagaman 1966-4-17 121 Butte 3.5 miles north of Magalia. Comment
  CDA43066  Photinia serratifolia L. P. Janeway 2011-4-2 10236 Butte Sacramento Valley.; Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave. between Madrone Ave. and Crister Ave. Comment
  CHSC108800  Photinia serratifolia Lowell Ahart 2012-4-9 17849 Butte In a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC66085  Phyla nodiflora var. rosea Vernon H. Oswald 1996-5-22 7619 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CHSC100904  Physocarpus capitatus R. A. Schlising; R. Banchero 1981-5-16 4090 Butte Along Vilas Road, 2.2 miles east of its junction with Cohasset Road, in the village of Cohasset at the West Branch of Mud Creek.. 743 Comment
  CHSC28827  Pilularia americana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 419 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd ( at e edge of mt). 381 Comment
  CHSC29996  Pilularia americana L. Ahart 1980-4-19 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC32152  Pilularia americana L. Ahart 1978-5-2 1712 Butte On top of Table Mt, e of parking area. Near Oroville. 400 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
  SEINET10530356  Pilularia americana Mary Susan Taylor 1980-3-28 Taylor 2396 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC11774  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville. 1550 Comment
  NY49911  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC3326  Pinus halepensis M. Gregg 1966-4-2 89 Butte On the Nature Trail in Bidwell Park. Off of E. 8th St. in Chico. Comment
  NY61953  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC4586  Pinus sabiniana C. Glascock 1965-1-27 196 Butte 2 mi. e of Oroville at 2723 Oro-Quincy Hwy; ca. 30 ft. downslope from midpoint of driveway. Comment
  POM120221  Pinus sabiniana C. C. Bruce 1897-01 1787 Butte Foothills Comment
  CHSC116592  Piperia elongata L. P. Janeway 2015-6-30 11790 Butte Northern High Sierra Nevada. Plumas National forest; along road 19N19 1.3 road-km east of Ponderosa Way; north-northwest slopes halfway between Sunset Hill and Ponderosa Dam (South fork Feather River). 701 Comment
  CHSC65869  Piperia transversa L. P. Janeway 1995-7-16 4862 Butte Along Jordan Hill Road 0.3 mi south of the turn to Sawmill Peak Lookout; about 2 mi east of Magalia. 929 Comment
  SEINET10529838  Pityrogramma triangularis Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3468 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  SEINET10966200  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-5-27 Taylor 2680 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10529968  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-4-28 Taylor 3568 B 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
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  CHSC28467  Plagiobothrys fulvus var. campestris R. A. Schlising 1979-4-15 3364 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS77831 Image available Plagiobothrys glyptocarpus A. A. Heller 1914-5-16 11202 Butte 8 mi n Oroville Comment
  JEPS117189  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  UC1442671  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  POM71479  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  RSA754790  Plagiobothrys nothofulvus L. Ahart 2009-4-26 15645 Butte Sides of Guardians Trail, about 200 yards SW of Pine Trail, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  UCR237307  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18754 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  SEINET12326942  Plagiobothrys nothofulvus J. D. Nishball 1982-1 6 Butte ca 10 mi SE of Chico, 1.5 mi E of covered bridge, S side of Castle Rock ridge, Butte Creek Canyon 201 Comment
  UC1562356  Plagiobothrys scouleri Lowell Ahart 1990-7-5 6550 c Butte just w Scout Road (on the n side of Humboldt Road); Butte Meadows 1325 Comment
  CHSC35057  Plagiobothrys scriptus Paula Minton 1981-4-1 Butte Wurlitzer Ranch, northwesternmost Butte County. Off Cana-Pine Creek Road. 57 Comment
  SEINET10497608  Plagiobothrys scriptus Mary Susan Taylor 1980-3-28 Taylor 2405 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
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 Comment
  UC718179  Plagiobothrys stipitatus Carl B. Wolf 1937-5-14 Butte 5 mi nw Chico (Hamilton City Road); Sacramento Valley 45 Comment
  CHSC113391  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2014-6-1 19533 Butte Manmade shallow duck field, about 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC43425  Plagiobothrys tenellus Lowell Ahart 1977-4-28 1329 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 4 miles south-west of Feather Falls. 365 Comment
  CHSC66158  Planodes virginica Vernon H. Oswald; Lowell Ahart 1996-5-27 7655 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of marsh at the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC96378  Planodes virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville. 31 Comment
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  CHSC37404  Plantago elongata A. R. Ratcliff; R. A. Schlising 1980-4-6 3547 Butte Jct Chico-Oroville Road, about 5 mi s of Chico. 53 Comment
  CHSC24895  Plantago erecta T. A. Barrett 1976-4-15 20 Butte 2.7 km e of Chico off the Skyway. 30 Comment
  CHSC30381  Plantago erecta J. D. Jokerst 1979-3-20 1144 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and E edge of Mt. 396 Comment
  CHSC33393  Plantago erecta Tamara Anderson 1978-4-23 12 Butte Ca. 3.2 mi. s of jct. of Neal Rd. and Skyway, Paradise. 50 yds. ne of Skyway on cliffs. 339 Comment
  RSA0036649  Plantago erecta Lowell A. Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. 143 Comment
  UCSB50205  Plantago erecta Gray, John 1976-4-10 Butte Along roadside; 4 miles south of Oroville on Highway 70; T19N R3E Sec. 25, SE quarter 30 Comment
  CHSC34246  Plantago lanceolata M. S. Taylor 1981-8-15 4180 Butte Weed lot on n side of the Skyway, Inskip. 1463 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CHSC52186  Platanus racemosa Pauleen Broyles 1987-5-21 1054 Butte The Nature Conservancy Vina Plains Preserve Wurlitzer Addition. Occasional along Singer and Pine Creeks. Comment
  CAS-BOT-BC91593  Platystemon californicus H. E. Brown 1897-4-15 467 Butte Near Clear Creek. 53 Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC195404  Plectritis ciliosa subsp. ciliosa A. A. Heller 1914-3-26 11233 Butte Canyon of Big Chico Creek Big Chico Creek 76 Comment
  UC131905  Plectritis macrocera Mrs. R. M. Austin July 1896 824 Butte Colby Comment
  UC474262  Pleuricospora fimbriolata H. F. Copeland 1930-7-21 Butte Jonesville, Butte Creek Butte Creek; Jonesville, Butte Creek Comment
  UC600609  Pleuricospora fimbriolata unknown 1926-6-21 409 Butte Jonesville Comment
  CAS-BOT-BC458149  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CHSC51042  Poa annua Lowell Ahart 1990-8-15 6584 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC49697  Poa bolanderi Vernon H. Oswald 1983-8-4 969 Butte Humboldt Summit, ca 3 mi ne of Jonesville. 1993 Comment
  SEINET10659126  Poa bolanderi Mary Susan Taylor 1978-7-19 Taylor 1777 Butte On E side of Upper Scotts John Road, ca 2 miles N of its junction with Scotts John Road, ca 6 miles NE of Jonesville. 1890 Comment
  SEINET10921183  Poa bulbosa Isle 1969-4-10 ISLE 302 Butte Just off the S. side of Neal Road about 1 mile E. of the Neal Rd.-HW 99E intersection. Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 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
  CDA14181  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. rhizomatous perennial in a +- moist, low area near creek. Shaded. Comment
  CHSC54354  Poa compressa Lowell Ahart 1991-6-22 6665 Butte On the west side of Powell Creek, below the high water line of Lake Oroville, east of Springtown Road, Lake Oroville. 243 Comment
  CHSC83100  Poa pratensis P. Moyer 1972-4-16 189 Butte CSUC Campus. S bank of Chico Ck. between Warner St. and New Dorm Bridge. 60 Comment
  CHSC9347  Poa pratensis B. Anthony 1968-4-16 461 Butte Chico State College Campus, entrance to Vets Village, Chico. Comment
  SEINET10508309  Poa scabrella Lowell Ahart 1985-5-15 Ahart 4996 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC32606  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising 1981-3-23 1266 Butte Ca 110 m S of Neil Rd. Comment
  CHSC35987  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1561 Butte Slope adjacent to road to Forbestown Resv. just S of the S. Fork of the Feather River. Comment
  CHSC49568  Poa secunda subsp. secunda Vernon Oswald; Lowell Ahart 1987-5-14 2395 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi ne of Hwy 32. 1173 Comment
  CHSC42197  Pogogyne zizyphoroides John E. Hunter 1986-4-12 52 Butte Ca 1 km e of Chico, 50 m s of Hwy 32. 75 Comment
  SEINET10968992  Pogogyne zizyphoroides Mary Susan Taylor 1975-4-29 Taylor 538 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  JEPS115673  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 369 Comment
  SEINET6647276 Image available Polygonum alpinum E. B. Copeland 1930-1 s.n. Butte Jonesville 1500 Comment
  CHSC20497  Polygonum aviculare M. S. Taylor 1975-5-24 770 Butte Abundant weed in lawns, 1456 Arcadian, Chico. 60 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC29772  Polygonum bidwelliae M. S. Taylor; R. A. Schlising, L. Ahart 1980-5-31 2769 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  JEPS115656  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 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 411 Comment
  SEINET3405100 Image available Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte Just back of the Rifle Range, 5 miles E of Chico, opposite Golf Links Comment
  UC726648  Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte 5 mi e Chico (just back of rifle range, opposite golf links) Comment
  RSA781349  Polygonum bolanderi Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 148 Butte Humboldt road. Comment
  CHSC60761  Polygonum californicum Vernon H. Oswald; Lawrence P. Janeway 1993-6-6 5490 Butte S of Jarbo Gap on Dark Canyon Rd., ca. 0.1 mi N of the ramp into Lake Oroville. 289 Comment
  UC466038  Polygonum californicum Mrs. R. M. Austin Apr. 1896 174 Butte plains Comment
  RSA4393  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. 2100 Comment
  CHSC58944  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CHSC50555  Polygonum douglasii subsp. johnstonii Vernon Oswald; Lowell Ahart 1990-7-5 4350 Butte Headwaters of Willow Creek, 0.3 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug summit), ca. 4 mi east of Jonesville. 1950 Comment
  POM280377  Polygonum kelloggii Lyman Benson 1932-7-28 3975 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC69111  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte Around rocks, near some steamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  POM219114  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, by Butte Creek 1500 Comment
  CHSC48664  Polygonum parryi Vernon Oswald 1986-5-6 1997 Butte Cohasset ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  SEINET11934432  Polygonum parryi L. Ahart, Ahart, P. 1984-1 4730 Butte About 1.5 mi SE of Bald Mountain, 3/4 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  JEPS108976  Polygonum persicaria Lowell Ahart 2006-9-11 13290 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC478530  Polygonum phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville; along streams 1500 Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  SEINET10479686  Polygonum spergulariiforme Mary Susan Taylor 1980-9-19 Taylor 3338 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  UC122768  Polypodium Mrs. R. M. Austin Mar, 1896 237 Butte Little Chico Canyon Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  CHSC46173  Polypodium calirhiza Lowell Ahart 1974-3-18 327 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC97736  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 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
  SEINET10876076  Polypogon australis Lowell Ahart 1987-6-9 Ahart 5730 Butte On dry sand, 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
  CHSC36518  Polypogon interruptus L. Ahart 1982-5-28 3442 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC38850  Polypogon interruptus Vernon Oswald 1983-6-17 700 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 200 ft w of Day Camp. On ledge near creek. 91 Comment
  JEPS103559  Polypogon interruptus Lowell Ahart 2002-4-15 9492 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  JEPS114960  Polypogon interruptus Lowell Ahart 2008-5-12 14741 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
  JEPS124334  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA713014  Polypogon interruptus L. Ahart 2005-12-11 12520 Butte 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
  SEINET10602421  Polypogon interruptus A. Arthur Heller 1913-6-4 Heller 10775 Butte Table Mountain Olive Ranch north of Oroville. Comment
  CAS-BOT-BC233208  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte 7 miles SW of Feather Falls. Ca. 1 mile S of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC45743  Polypogon monspeliensis S. A. Conley 1986-6-16 40 Butte 2.1 mi. e of Oroville on hwy 162. Along rd. Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CHSC104857  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico. 197 Comment
  CHSC58867  Polystichum imbricans subsp. imbricans Lowell Ahart 1992-7-29 6881 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  JEPS87418  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  LA208547  Populus trichocarpa Wm. Bridge Cooke; 1939-8-10 13855 Butte Mount Shasta, Upper portion of Mud Creek Canyon to the Devastated Area 1828 Comment
  CHSC46093  Portulaca oleracea L. P. Janeway 1988-10-5 3157 Butte City of Chico; campus of Calif. State Univ. Edge of plantings on shady N side of Holt Hall, near Mansion Ave. 59 Comment
  CHSC112337  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  SBBG128732  Potamogeton foliosus subsp. foliosus L. Ahart 2013-7-6 18823 Butte waterhole, Peter Ahart Ranch, ca. 1 3/4 mi N and 1 1/2 mi E of Honcut, ca. 12 mi (air) SE of Oroville 37 Comment
  CHSC66688  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1996-7-22 8091 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.2, Sanctuary II. 32 Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC34127  Potamogeton natans L. Ahart 1981-9-21 3198 Butte Along French Creek, ca. 100 m w of where the road crosses French Creek, ca. 1 mi w of the Sly Creek Reservoir. In a pond above the swamp. 1300 Comment
  UC1100068  Potamogeton nodosus Verne Grant and Herbert L. Mason 1946-8-7 12990 Butte Gridley Road n of Butte Sink Comment
  CHSC46627  Potamogeton pectinatus Vernon H. Oswald 1988-8-5 3619 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). Pond. 85 Comment
  CHSC45584  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2035 Butte Butte Cr between Forks of Butte and the bridge (Doe Mill Rd). 609 Comment
  SEINET10871270  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1976-5-5 Taylor 1115 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC26856  Potentilla gracilis var. fastigiata M. S. Taylor; M. Hayes 1978-6-24 1666 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  CHSC33661  Primula suffrutescens R. Schlising; R. Preston, R. Banchero, D. Burk. 1981-7-21 Butte SE of Jonesville in NE part of county, on ridgetop of Snow Mountain. 2103 Comment
  CHSC38480  Prunella vulgaris var. lanceolata Vernon Oswald 1983-6-14 686 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. 207 Comment
  CHSC52221  Prunella vulgaris var. lanceolata L. P. Janeway 1987-8-4 2415 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  UCD80399  Prunella vulgaris var. lanceolata CNPS SN Foothill Team 2005-7-5 SNNR 0566 Butte CSUC, Big Chico Creek Ecological Reserve. 286 Comment
  CHSC48494  Prunella vulgaris var. vulgaris Vernon Oswald 1984-6-5 1255 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CHSC51228  Prunella vulgaris var. vulgaris Lowell Ahart 1975-6-23 803 Butte Growing along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 53 Comment
  CHSC9388  Prunus M. MacArthur 1968-6-12 329 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC110115  Prunus cerasifera L. P. Janeway 2012-3-21 10816 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CHSC35090  Prunus persica S. Posner 1972-10-3 Butte Garden behind 725 Nord Ave., Chico. Comment
  UC1594537  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte about 0.5 mi n of Flea Valley (about 4.5 mi (air) ne of Concow Reservoir, e of the intersection) 1158 Comment
  CHSC94620  Pseudognaphalium luteoalbum Lowell Ahart 2006-9-11 13276 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  HSC97095  Pseudognaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  JEPS108883  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC43273  Pseudognaphalium thermale Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC896905  Pseudognaphalium thermale A. A. Heller 1916-9-23 12659 Butte near Forest Ranch (Sierra foothills); Sierra Comment
  CHSC109124  Pseudotsuga menziesii var. menziesii Lowell Ahart 2012-2-22 17737 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC38253  Pseudotsuga menziesii var. menziesii Vernon Oswald 1983-8-19 1007 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  RSA795638  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte East edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 air miles northeast of Chico. 190 Comment
  SEINET7042710  Psilocarphus oregonus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  RSA0047080  Ptelea crenulata L. Ahart 2012-4-30 17931 Butte Both sides of South Rim Trail, about 0.5 miles southwest of the old homestead, pond, and Ten Mile House Road, about 0.75 miles west of Highway 32, about 8 miles northeast Chico, south part of Upper Bidwell Park. 256 Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  SEINET10530100  Pteridium aquilinum var. pubescens Mary Susan Taylor 1980-5-27 Taylor 2649 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC27144  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC90241  Pterostegia drymarioides Michael J. McNairn 1989-4-22 17 Butte At the base of rocks along Yahi trail above Salmon Hole. Bidwell Park. Ca. 3 mi. e of 5-mile swimming area, ne Chico. 106 Comment
  CHSC2369  Pyrola dentata R. Carter 1965-6-21 246 Butte Found along E side of Oroville-Quincy Rd., 5.1 mi. N of Mountain House. 1219 Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  UC177572  Pyrola picta H. M. Hall 1914-7-23 9779 Butte near Jonesville 1584 Comment
  CAS-BOT-BC466011  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CHSC43865  Pyrus communis Vernon Oswald 1988-3-24 3262 Butte Rancho Arroyo Chico. Bidwell River State Park s of Chico Landing Site, just n of the access road to a gravel bar along the Sacramento River at Chico Creek. 38 Comment
  CHSC110035  Quercus Lowell Ahart; Josephine Guardino, 2012-10-12 18482 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  CHSC96645  Quercus X morehus Lowell Ahart 2007-3-28 13599 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  SBBG126082  Quercus X morehus L. Ahart 2012-3-23 17799 Butte S side of Old Humboldt Rd cut, N end of Disc Golf Area, ca 50 yards W of Hwy 32, ca 5 mi NE of Chico 395 Comment
  CDA21847  Quercus berberidifolia J. T. Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz. Comment
  JEPS115841  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  CHSC3255  Quercus douglasii Virginia Hagaman 1966-4-23 135 Butte 6 miles north of Chico on highway 32 at edge of road. Comment
  HSC23322  Quercus douglasii D. G. Schmale 1971-5-25 32 Butte Off Skyway Rd. 8 mi W of Paradise 396 Comment
  SACT002121  Quercus douglasii Herbert Copeland 1936-8-20 Butte South of Oroville; Rolling hills at edge of Sacramento Valley Comment
  CAS-BOT-BC62798  Quercus garryana John Thomas Howell 1955-6-15 30500 Butte 6 miles form Paradise on road to Pentz 426 Comment
  RSA263855  Quercus garryana J. T. Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CAS-BOT-BC62795  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  SEINET10477266  Quercus kelloggii Mary Susan Taylor 1980-5-27 Taylor 2657 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  UC57375  Quercus wislizeni H. E. Brown 1896-10-9 109 Butte near Clear Creek 53 Comment
  UC5836  Quercus wislizeni unknown 1472 Butte Table Mountain, near Oroville Comment
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  CAS-BOT-BC379115  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  CHSC10756  Ranunculus aquatilis var. hispidulus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31877  Ranunculus aquatilis var. hispidulus L. Ahart 1974-6-3 468 Butte In wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46842  Ranunculus aquatilis var. hispidulus L. V. Ritter 1969-5-5 259 Butte E shoe of Horseshoe Lake, Bidwell Park. Comment
  CHSC51105  Ranunculus aquatilis var. hispidulus Gerald A. Winter 1989-4-15 6 Butte In stream, ca. 150 yds w of Cherokee Road, on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  CHSC111337  Ranunculus arvensis Lowell Ahart 2012-5-2 17961 Butte Near a small drainage, about 30 yards northeast of the Easter Cross Parking Lot, Uppe Bidwell Park, about 1 mile east of Chico. 91 Comment
  CHSC52121  Ranunculus arvensis John Lowrie 1979-4-26 Butte S. of the Skyway, 4 mi w. of Paradise. Comment
  CHSC116742  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 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
  SEINET12089319  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft. e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run 146 Comment
  POM99363  Ranunculus canus C. C. Bruce 1898-05 2437 Butte [No location data on label] Comment
  CHSC53702  Ranunculus hebecarpus Kirsten Tarp 1983-4-3 251 Butte S part of county on Swedes Flat Rd. 335 Comment
  POM99252  Ranunculus hebecarpus C. C. Bruce 1897-05 1889 Butte Iron Canyon Comment
  CHSC8739  Ranunculus muricatus S. Chulasmai 1966-4-15 5 Butte Stream bank (Keefer Rd). Comment
  JEPS84920  Ranunculus muricatus Barbara Ertter with Lowell Ahart 1986-4-13 5888 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  CHSC1489  Ranunculus occidentalis R. Carter 1964-3-15 45 Butte 8 mi. E of Oroville, 250 yds. up Wakefield Dr. off Feathervale. 121 Comment
  UC204956  Ranunculus occidentalis A. A. Heller 1914-5-18 11415 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CHSC3554  Ranunculus occidentalis var. occidentalis Gary Dutton 1966-2-28 103 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. CSC. Comment
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 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
  CHSC41521  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-27 358 Butte N part of county, n of Philbrook Reservoir, at Coon Hollow. Near jeep trail. 1706 Comment
  CHSC11810  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  SFV10355  Rhamnus californica M. L. Vincent 1963-6-6 375 Butte Sierra Nevada Pentz Road, 5 miles south of Paradise. 330 Comment
  RSA197844  Rhamnus ilicifolia L. S. Rose 1955-6-15 55104 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  CHSC37651  Rhamnus tomentella subsp. tomentella T. B. Devine 1981-8-25 753 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CHSC51908  Rhamnus tomentella subsp. tomentella Sally A. Carter 1988-4-24 Butte South side of Little Butte Cr, ca 8.8 mi ESE of Chico, ca 15 ft W of Honey Run Rd. 160 Comment
  UC80208  Rhamnus tomentella subsp. tomentella Mrs. R. M. Austin 1895-2 694 Butte Little Chico Creek Comment
  UC455448  Rhododendron occidentale Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC61204  Rhus aromatica Lowell Ahart 1993-4-8 6929 Butte on east side of the gravel road, Oroville Wildlife Area, east of the Feather River, about 2 1/2 miles south of the Oroville Airport. 30 Comment
  UCD116882  Rhus aromatica Joseph M. DiTomaso 1976-5-23 462 Butte Lake Oroville. Comment
  UC124165  Rhus trilobata Mrs. R. M. Austin 1896-4 767 Butte Little Chico Creek Comment
  UC1532353  Rhynchospora californica Vernon Oswald 1985-7-10 1895 Butte ca. 0.2 mi. n.e. Salmon Hole (ca. 200 ft. s. of Upper Park Rd., Upper Bidwell Park, Chico); Chico, Upper Bidwell Park 182 Comment
  JEPS109898  Rhynchospora capitellata Dean W. Taylor 2006-8-17 19608 Butte Bald Mt.; West Branch Feather River watershed; Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank 1676 Comment
  JEPS98373  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte 4 air mi N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  UC1562364  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  CHSC35214  Ribes amarum M. S. Taylor; J. Jokerst 1980-4-18 2505 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC20960  Ribes roezlii M. S. Taylor 1975-9-12 909 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  CAS-BOT-BC198960  Ribes roezlii var. roezlii Jim Riley 1923-3-23 s.n. Butte Forest above De Sabla Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC74463  Rorippa curvisiliqua Lowell Ahart 1986-11-9 5451 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles SW of Oroville. 36 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  JEPS114455  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 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
  CHSC39066  Rorippa palustris var. occidentalis R. A. Schlising 1983-3-20 4397 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CHSC1597  Rosa bridgesii G. Herrington 1930-5-1 Butte Paradise. 609 Comment
  CHSC65429  Rosa bridgesii Vernon Oswald 1984-5-28 1211 Butte Cohasset Rd., 1.3 mi n of the end of the pavement. 1005 Comment
  POM89739  Rosa californica C. C. Bruce 1897-05 1800 Butte Fourteen mile house 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
  SEINET4856098  Rosa pisocarpa subsp. ahartii Unknown 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 air miles ESE of Oroville. 655 Comment
  CHSC20098  Rosmarinus officinalis M. S. Taylor 1975-4-8 449 Butte On se corner of Little Cafeteria, California State University, Chico. 60 Comment
  CHSC55060  Rotala indica Lowell Ahart 1991-10-25 6731 Butte Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  UC1191554  Rotala indica Herbert L. Mason 1946-9-27 13137 Butte 2 mi w Biggs; Butte Sink Comment
  CHSC45821  Rubus armeniacus L. P. Janeway 1987-6-20 2256 Butte S Fk Feather R at crossing of rd from Lumpkin Ridge to Moorville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. Along rd on S side of river. 975 Comment
  CAS-BOT-BC147105  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC89467  Rubus laciniatus R. D. Fischer 2004-7-18 446 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. At creek edge. 207 Comment
  SEINET10483578  Rubus laciniatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC148367  Rubus leucodermis Clarence R. Quick 1952-6-30 52 -98 Butte Ridge-top, Big Bar Mt. east of Pulga - Sierra Nevada Comment
  CHSC48872  Rubus parviflorus Vernon Oswald 1984-5-23 1206 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. Near the creek. 463 Comment
  UCD89072  Rubus ursinus Lindsay Clark 2008-6-3 BWP 26 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 92 Comment
  HSC72720  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte 1 mi. S of Butte Plumas Co. line along W side Oroville-Quincy Rd. 1372 Comment
  CHSC50683  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte Just below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 Comment
  CDA34628  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte On west side and bottom of a steep bank, 10 yards west of the dredger piles along North Honcut Creek, about 2.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC116701  Rumex crispus Lowell Ahart 2016-5-14 20827 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC90930  Rumex crispus Lowell Ahart 2005-4-14 11717 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC58270  Rumex dentatus Lowell Ahart 1992-5-23 6777 Butte Fallow rice field, on the west side of Goodspeed Watt Road, about 1/2 mile south of Butte City Highway. 30 Comment
  CHSC43714  Rumex salicifolius var. denticulatus Vernon Oswald 1987-6-8 2960 Butte Butte Creek Reserve on the nw side of the creek, ne of Hwy 99. 67 Comment
  CHSC103683  Sagina apetala Lowell Ahart 2010-4-30 16583 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
  CHSC109087  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte Seep along a small wash, east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC116639  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte On both sides of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC98988  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-8 14710 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CAS-BOT-BC445727  Sagittaria latifolia Herbert L. Mason; Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  CHSC52143  Sagittaria longiloba L. P. Janeway 1988-6-12 2758 Butte Corner of rice field near jct of hwy 162 and Midway; 2 mi S of Richvale. 28 Comment
  SEINET10905440  Sagittaria montevidensis subsp. calycina Mary Susan Taylor 1978-7-22 Taylor 1852 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC43288  Sagittaria sanfordii Lowell Ahart 1987-10-22 5920 Butte In Madrone Lake, near the Oroville-Quincy Highway. 609 Comment
  LA208601  Salix eastwoodiae E. B. Copeland; 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750.0 Comment
  CHSC47485  Salix exigua var. hindsiana Lowell Ahart 1984-6-8 4676 Butte About 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 426 Comment
  JEPS119591  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  RSA795646  Salix gooddingii L. Ahart 2012-4-20 17892 Butte 20 yards north of the table at the old homestead, about 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 miles west of Highway 32, about 9 air miles northeast of Chico. 259 Comment
  CAS-BOT-BC104076  Salix hindsiana Lowell Ahart 1984-6-8 4676 Butte along the dirt road about 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 144 Comment
  UC456789  Salix laevigata E. B. Copeland 1931-5-8 Butte 5-mile dam Chico Comment
  SEINET10866289  Salix laevigata Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4295 Butte T19N R4E se/ne sec 3. Oroville quad. Turnout near Bridal Path sign, across Feather River from Spillway, along Oroville Dam Blvd (Alt 40), ca. 2.5 mi w of Oroville Dam Visitors Center. Comment
  UC203867  Salix lasiandra subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte headwaters of Chico creek in Chico meadows 1219 Comment
  CAS-BOT-BC125179  Salix lasiandra var. lasiandra Javier Penalosa 1962-6-18 2442 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC21249  Salix lasiolepis M. S. Taylor 1975-10-31 978 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, ca. 12 mi s of Chico. 91 Comment
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SD931  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, in meadow near the head of North Willow Creek 1550 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
  JEPS120012  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  JEPS96095  Sambucus mexicana Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 .1 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary); Sacramento River National Wildlife Refuge 28 Comment
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  SEINET10465318  Sambucus mexicana Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4254 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CHSC31412  Sanicula bipinnatifida Howard Paul 1980-4-23 11 Butte Along the s rim of Chico Creek canyon, ca. .2 mi n of Highway 32, 6.2 mi e of Chico. 259 Comment
  CHSC28642  Sanicula crassicaulis M. S. Taylor 1979-3-31 1971 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 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
  CHSC11874  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1550 Comment
  CAS-BOT-BC466195  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CHSC70840  Saxifraga californica Vernon Oswald 1998-3-16 8890 Butte North end of Upper Bidwell Park along lower Jeep Trail paralleling the east side Big Chico Creek north of the old homestead. 243 Comment
  SEINET8244409  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico Creek. 76 Comment
  CHSC43658  Scabiosa atropurpurea Vernon Oswald 1983-7-24 907 Butte Boat ramp, Bidwell State Park, on River Rd. w of Chico near the washout. Comment
  CHSC106601  Scandix pecten-veneris L. P. Janeway 2011-4-13 10230 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
  SEINET10873903  Scandix pecten-veneris Mary Susan Taylor 1980-4-6 Taylor 2461 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  SEINET13945271 Image available Scandix pecten-veneris Barbara Ertter, Lowell Ahart & Jeffrey L. Strachan 1980-1 3280 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville & Marysville. T17N R4E SEC 4, NE 1/4, elev ca 100 ft 30 Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC111369  Schoenoplectus acutus var. occidentalis John Thomas Howell 1959-9-20 34651 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 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
  UC1100827  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 mi w Biggs; w of Biggs Comment
  CHSC56802  Scirpus congdonii L. P. Janeway 1987-6-26 2309 Butte 2.5 mi east of Granite Ridge along road to Lynch and Logue Meadows; near where the road crosses Camp Creek. 1365 Comment
  CHSC28549  Scirpus diffusus M. S. Taylor 1979-7-18 1722 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, sw of Jonesville. 1524 Comment
  CHSC97341  Scirpus microcarpus L. P. Janeway 2007-8-6 9150 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Dense clumps of this plant occasionally on rotting logs in the now waterless (seasonal dry down), but still soggy, upper part of the pond. 776 Comment
  CHSC30028  Scribneria bolanderi L. Ahart 1980-5-4 2173 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  CHSC6093  Scribneria bolanderi A. R. Jaegel 1968-4-10 101 Butte W side of Cherokee Rd. and 1 mi s of Oregon City Rd. Comment
  RSA0024699  Scribneria bolanderi L. Ahart 2003-5-18 10180 Butte Peter Ahart Ranch. About 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 49 Comment
  SEINET11688353  Scribneria bolanderi Unknown 1985-1 4971 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC42833  Scutellaria californica L. P. Janeway 1987-6-5 2146 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at the rd along French Cr. 640 Comment
  CHSC43842  Scutellaria californica B. Castro 1987-5-9 86 Butte Just e of Cohasset Rd, 9.5 mi by road from Chico. 539 Comment
  CHSC85910  Scutellaria californica L. P. Janeway; Gail Kuenster, Adam Henderson 2003-3-12 7739 Butte Northern High Sierra Nevada. Cool shady drainage about 35 m northeast of North Fork Feather River arm of Lake Oroville; 1.9 km north-northwest of mouth of French Creek. 290 Comment
  CHSC87793  Scutellaria californica Paul Maslin 2004-4-6 10 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC65571  Scutellaria siphocampyloides R. Banchero 1980-5-31 166 Butte Ca 2.3 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 3.9 mi SW of Cohasset. Ca 0.1 mi NW of road. 182 Comment
  CHSC51237  Scutellaria tuberosa Lowell Ahart 1980-5-4 2218 Butte About 1/2 mile east of the Oak Grove Cementery, about 3/4 to 1 mile south-east of Hurleton. 548 Comment
  CHSC10715  Sedella pumila Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC109160  Sedella pumila Lowell Ahart 2012-5-12 18937 Butte On the south side of Humboldt Trail, about 200 yards east of Guardian Trail, about 1/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-1/2 miles (air) northeast of Chico. 361 Comment
  POM142368  Sedella pumila A. A. Heller, H. E. Brown 1902-5-7 5486 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  HSC66230  Sedella pumila Richard K. McGaugh 1979-4-7 4 Butte Table Mtn., 20 m W of Cherokee Rd., 5.65 km N of Oroville 457 Comment
  RSA256645  Sedella pumila David Johnson 1974-4-20 48 Butte Table Mt. Comment
  CHSC33872  Sedum albomarginatum M. S. Taylor 1981-5-11 3687 Butte N side of Feather River Hwy 70, at jct with Pulga ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  JEPS115506  Sedum spathulifolium Lowell Ahart 2009-5-23 15772 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC1410123  Sedum spathulifolium H. M. Wheeler 1954-3-12 Butte ne Oroville (Feather Falls on the Fall River); , ne of Oroville 571 Comment
  CHSC38233  Selaginella hansenii Vernon Oswald 1982-12-19 27 Butte Bidwell Park, Chico, on the north rim at the level of the Rifle Range. 188 Comment
  CAS-BOT-BC62123  Selaginella hansenii M. S. Taylor; K. Tharp 1983-3-12 5237 Butte Chico quad, along small rd off Stillson Canyon Rd (leading to Mannion Property), ca. 3 mi sse of Chico 152 Comment
  HSC66337  Selaginella hansenii M. S. Taylor 1980-3-8 2370 Butte Shady train 100 ft. SW of Pulga Bridge over Hwy. 70, 28 mi. NE of Oroville 488 Comment
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC48045  Selaginella wallacei L. P. Janeway 1984-10-7 1178 Butte Big Bald Rock. 975 Comment
  RSA726781  Selaginella wallacei Lowell A. Ahart 2007-2-24 13584 Butte Peter Ahart Ranch, about 3.4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  HSC85730  Selaginella wallacei L. P. Janeway 1984-10-19 1182 Butte Big Bald Rock, a granite dome, N-facing side 976 Comment
  SEINET10530444  Selaginella wallacei Mary Susan Taylor 1980-3-8 Taylor 2370 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CDA14051  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-1 13699 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC8148  Senecio aronicoides D. McClain 1969-3-20 84 Butte 1/2 mi. e. of Hooker Oak along the Chico Creek, Upper Bidwell Park, Chico. 64 Comment
  SEINET10872075  Senecio eurycephalus var. lewisrosei Heidi H. Schmidt 1993-6-15 Schmidt 869 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  JEPS124035  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte About 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  RSA0116251  Senecio sylvaticus Lowell A. Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC71634  Senecio triangularis Vernon H. Oswald; Lowell Ahart 1998-8-11 9464 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. Along the edge of the creek. 1396 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte 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. Comment
  CHSC92506  Senecio vulgaris Lowell Ahart 2005-12-11 12510 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC96618  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  UC2026877  Sequoiadendron giganteum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18009 Butte Southeast of the horse path, on the south side of the paved park road, south of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
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Jul 25 2018
  CHSC34158  Sericocarpus oregonensis Lowell Ahart 1981-8-31 3053 Butte S of the jct of Black Bart Rd and Oroville-Forbestown rd, ca. 10 mi W of Forbestown. 750 Comment
  CHSC40469  Sericocarpus oregonensis Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC6147  Setaria gracilis E. Parreno 1968-5-1 81 Butte Front lawn of house on nw corner of Ivy and W 2nd Sts., Chico. 59 Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  CDA42938  Setaria pumila subsp. pumila L. Ahart 2012-10-2 18493 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  JEPS117629  Setaria viridis Lowell Ahart 2010-9-24 17237 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  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
  UC725427  Sidalcea calycosa A. A. Heller 1942-5-27 16479 Butte Clark Road , Clark Road (Clear Creek Schoolhouse) Comment
  CHSC33518  Sidalcea gigantea R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4140 Butte NE part of county, E of Fork of Feather River and NE of Coyote Gap. On Four Trees Road. 1447 Comment
  CHSC37281  Sidalcea gigantea M. S. Taylor 1982-8-16 4996 Butte At seep and creek crossing road to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. 1645 Comment
  JEPS107764  Sidalcea hartwegii Lowell Ahart 2005-5-11 11808 Butte Along Hendricks Ditch, near a small stream, open pasture field, about 1 1/4 miles 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 276 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
  CHSC28473  Sidalcea hirsuta R. A. Schlising 1979-5-30 3429 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SBBG71471  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte 9 mi N of Chico Comment
  SEINET10480005  Sidalcea malviflora Mary Susan Taylor 1976-4-4 Taylor 1053 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  RSA21314  Sidalcea malviflora subsp. asprella Carl B. Wolf 1937-5-13 8659 Butte Sierra Nevada Foothills. 6.6 miles S. E. of Oroville on road to Wyandotte 122 Comment
  SEINET10937542  Sidalcea malviflora subsp. asprella Mary Susan Taylor 1982-8-16 Taylor 4996 Butte T24N R4E se/se sec 11. Pulga NW quad. At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. Mixed Evergreen Forest; 5400 ft. 1646 Comment
  SEINET10480011  Sidalcea oregana subsp. spicata Mary Susan Taylor 1975-8-31 Taylor 882 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
  NY222070  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus douglasii belt Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  CHSC84918  Silene laciniata subsp. californica Janice Morris 1995-4-24 90 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  CHSC3759  Sinapis arvensis R. L. Adams 1964-4-12 74 Butte 4 mi. W. Chico, W. Sacramento Ave. and River Rd. on NE quarter. Comment
  SEINET12048536  Sisyrinchium bellum Unknown 1984-1 12 Butte 1.8 mi S of Concow Reservoir and .2 mi N of Deadwood Creek 457 Comment
  SEINET10507628  Sitanion hystrix Lowell Ahart 1985-6-30 Ahart 5091 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET10472650  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1979-7-21 Taylor 2152 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10469849  Smilax californica Mary Susan Taylor 1975-6-25 Taylor 805 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CHSC1933  Solanum elaeagnifolium V. Holt 1931-6-1 Butte Paradise. 548 Comment
  CAS-BOT-BC157461  Solanum umbelliferum M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville 365 Comment
  CAS-BOT-BC157644  Solanum umbelliferum E. B. Copeland 1930-7-27 453 Butte Jonesville 1600 Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  CHSC31620  Soliva sessilis L. Ahart 1970-5-12 51 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115320  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC107250  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 -A Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC114962  Sonchus oleraceus Lowell Ahart 2015-1-27 19923 Butte Along the west side of Virginia Street, northwest of the intersection of Hazel Street and Virginia Sreet, Gridley. 29 Comment
  CHSC116495  Sonchus tenerrimus Lowell Ahart 2015-11-21 20691 Butte On the north side of home, Peter Ahart Ranch, about 1 1/2 miles north and one mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET10483617  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3706 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  SEINET10970333  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3697 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC66465  Sorghum halepense Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .2 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC108763  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  JEPS118633  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  JEPS120962  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  RSA0097897  Spergularia bocconi L. Ahart 2005-5-28 11827 Butte On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  SEINET10454595  Sphenosciadium capitellatum Mary Susan Taylor 1978-7-18 Taylor 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  SD2172  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit. 2100 Comment
  CAS-BOT-BC149612  Spiraea douglasii A. A. Heller 1928-7-10 14675 Butte At Butte Meadows Comment
  CHSC42800  Spiraea douglasii L. P. Janeway 1987-6-8 2168 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  SEINET264180  Spiraea douglasii R. J. Becraft 1929-7-21 Butte Philbrook Creek 1829 Comment
  CHSC101830  Stachys ajugoides var. rigida Lowell Ahart 2009-5-23 15760 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
  CHSC43646  Stachys pycnantha B. Castro 1987-9-12 219 Butte At w edge of Butte Ck, ca 24 mi ne of Chico via Hwy 32, Garland Rd and the Butte Ck Trail. On cliff ca 50' from water's edge. 585 Comment
  CHSC84398  Stachys pycnantha Lowell Ahart 2003-7-23 10439 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  JEPS115720  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
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  RSA178595  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  UC1609309  Stellaria borealis subsp. sitchana Vernon H. Oswald and Lowell Ahart 1993-6-22 5558 Butte 0.5 mi nw Powellton Rd. (Head Dam Rd (120C), between Powellton and Clear Creek, n of De Sable) 1091 Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  CHSC46555  Stellaria calycantha V. Oswald; L. Ahart 1989-7-21 3874 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  JEPS87171  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  CHSC107231  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC39071  Stellaria media R. A. Schlising 1983-3-20 4399 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Near fences. Comment
  CHSC42733  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC181449  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 Comment
  CHSC11854  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville. On gravel bars by Butte Creek. 1500 Comment
  CHSC35037  Stellaria obtusa R. Schlising; R. Banchero 1980-8-1 3952 Butte On Forest Service road N of Philbrook Lake in N part of county. At margin of small stream. Comment
  JEPS109818  Stellaria obtusa Dean W. Taylor 2004-7-21 19201 Butte Coon Hollow, upper reaches thereof ca. 0.3 miles above the creek crossing of Forest Road 26N74 (High Lakes Road), watershed West Branch Feather River 1706 Comment
  JEPS122071  Stipa occidentalis var. californica Lowell Ahart 2014-7-13 19655 Butte About 40 yards south of Philbrook Road, from 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 Comment
  SEINET10508406  Stipa stillmanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4190 Butte T23N R4E ne sec 4. Ca. 1.5 mi se of Stirling City along road. Yellow Pine Forest; 1100 m. 1100 Comment
  UC1292726  Streptanthus diversifolius Freed W. Hoffman 1951-8-1 3828 Butte 6.2 mi N of Oroville-Chico Hwy on the road to Cherokee Table Mountain Comment
  CHSC78132  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  CAS-BOT-BC87427  Streptanthus polygaloides</