Search Results — 2000 specimen records retrieved (1612 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC3009  Acacia arabica Carl Pejsa 1958-4-19 6 Butte Bidwell Park Forestry Station. Comment
  CHSC3625  Acacia decurrens John Francis 1966-2-27 35 Butte Arcadian and W. Francis Willard Avenues, Chico. Comment
  CHSC117394  Acer circinatum Steve Edwards 1992-5-17 Butte Vilas Road, 0.9 miles from its junction with Cohasset Road. Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC330627  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 s.n. Butte Jonesville, near Butte Creek Comment
  JEPS115154  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  SEINET10454009  Acer saccharinum Mary Susan Taylor 1975-5-6 Taylor 555 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  RSA268070  Achnatherum lemmonii var. lemmonii J. R. Reeder, C. G. Reeder 1972-6-6 5654 Butte Ca. 4 miles N of Forest Ranch. 1067 Comment
  CHSC61528  Achnatherum occidentale subsp. californicum Lowell Ahart 1993-6-26 7019 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC94138  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  JEPS87144  Achnatherum occidentale subsp. occidentale Lowell Ahart 1992-7-29 6875 Butte 3/4 mi nw Lotts Lake (1 mi ne of the Carr Mine) 1798 Comment
  CHSC99484  Achnatherum thurberianum Lowell Ahart; John Dittes 2008-6-19 14870 Butte Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
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Oct 5 2019
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  CHSC39293  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte Along the edge of a dirt road, about 3 miles east of Milsap Bar, about 25 miles northeast of Oroville. 1100 Comment
  CHSC46221  Acmispon argophyllus var. fremontii Pauleen Broyles 1987-6-19 1056 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC90520  Acmispon brachycarpus Richard A. Nichols 1980-4-19 10 Butte 1 yd above current shoreline of w branch of Lake Oroville, ca. 500 yds n of Lime Saddle Marina boat ramp. 286 Comment
  CHSC113908  Acmispon parviflorus Lowell Ahart 2014-5-8 19450 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC90225  Acmispon parviflorus Eric M. Haney 1989-4-23 11 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  JEPS119692  Acmispon wrangelianus Lowell Ahart 2012-5-2 17956 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC46587  Aconitum columbianum var. columbianum V. Oswald; L. Ahart 1989-7-21 3878 Butte Middle branch of upper Butte Creek, ca. 0.8 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. 1828 Comment
  CHSC39801  Adiantum capillus-veneris Ruby Gist 1935-3-1 Butte Fern Banks. Comment
  SEINET10839582  Adiantum capillus-veneris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4236 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC39841  Adiantum jordanii Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  SEINET10867068  Adiantum jordanii Mary Susan Taylor 1979-3-20 Taylor 1942 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC38778  Aegilops triuncialis Vernon Oswald 1983-6-9 662 Butte Upper Bidwell Park, Chico, 100 ft e of Parking Area A on the n side of Upper Park Rd. 85 Comment
  RSA739615  Aegilops triuncialis L. P. Janeway, B. Castro 2007-5-19 8978 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 88 Comment
  CAS-BOT-BC202593  Aesculus californica A. A. Heller 1913-5-25 10756 Butte Near Pents 152 Comment
  CHSC38317  Agoseris grandiflora Vernon Oswald 1983-6-16 691 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft W of the E end of the North Rim Trail. 414 Comment
  CHSC20249  Agoseris heterophylla M. Banning 1969-4-18 61 Butte Junction of Pentz Rd. and Pentz Magalia Rd. 304 Comment
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 780 Comment
  CHSC27289  Agrostis capillaris P. Moyer 1972-4-27 228 Butte CSUC campus. In front of Physical Sci. Bldg. 60 Comment
  CAS-BOT-BC127336  Agrostis exarata John Thomas Howell 1955-6-15 30474 Butte Paradise. 518 Comment
  CHSC102822  Agrostis exarata Lowell Ahart 2009-6-3 15829 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
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  SEINET10968288  Agrostis exarata Mary Susan Taylor 1978-7-19 Taylor 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC36527  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  SEINET10790042  Agrostis exarata var. monolepis Lowell Ahart 1982-5-28 Ahart 3440 Butte On damp to dry soil along edge of a small wash under trees, eE of North Honcut Creek, near Peter Ahart Ranch, ca. 3 miles NE of Honcut. 50 Comment
  CHSC108057  Agrostis hendersonii Melanie Williams; Tim Hanson, Matt Simenc, Nicole Habecker 2011-6-22 Butte Northern High Sierra Nevada. Plumas National Forest; northwest facing slopes near the top of the ridge on the southeast side of Martin Creek, 1.9 air miles northeast of Madrone Lake. 755 Comment
  RSA715555  Agrostis microphylla L. Ahart 2005-5-11 11793 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CHSC113105  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  UCD53293  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC25442  Agrostis stolonifera Hayes; Warner 1977-9-11 83 Butte Along roadside, between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  CHSC38781  Agrostis stolonifera Vernon Oswald 1983-6-27 767 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the Diversion weir. 79 Comment
  CHSC63305  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte On the south edge of Cottonwood Road, on the east side of the overpass over Highway 70, about 3 1/2 miles (air) north of Oroville. 60 Comment
  JEPS87680  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  CAS-BOT-BC138575  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit of Jonesville. 2133 Comment
  SEINET10790429  Agrostis variabilis A. Arthur Heller 1914-8-7 Heller 11660 Butte Summit end of Jonesville on a north slope where snow lies until midsummer. Collected in Yellowstone Park. 2134 Comment
  CAS-BOT-BC48025  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Foothills, east of Oroville Comment
  CHSC2117  Aira caryophyllea H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E of Chico. 152 Comment
  SEINET10507044  Aira caryophyllea Mary Susan Taylor 1980-5-27 Taylor 2691 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
  SEINET10934845  Aira caryophyllea A. Arthur Heller 1914-5-6 Heller 11363 Butte Marysville. Comment
  CHSC27792  Allium amplectens Rod Bunday 1978-4-25 16 Butte Ca. 200 ft w of Cohasset Rd ca. 12 mi ne of East Ave. between Chico and Cohasset. 304 Comment
  UC600453  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville 1524 Comment
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CAS-BOT-BC135817  Allium jepsonii B. Castro 1993-8-3 491 Butte Ca 1 mi S of Big Bar Mtn., 0.5 mi SE of Hungry Hunt Peak, on USFS rd 22N83 ca 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  SEINET10872298  Allium membranaceum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4698 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC472805  Allium obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  SEINET10471987  Allium obtusum Mary Susan Taylor 1976-4-24 Taylor 1072 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  UC1299737  Allium obtusum Freed W. Hoffman 1951-5-1 3773 Butte on ridge before reaching Little Butte Creek (on road from Magalia to Lovelock at Mosquito Creek); Mosquito Creek 792 Comment
  JEPS108540  Allium obtusum var. obtusum L. P. Janeway 2006-5-28 8642 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +/- exposed granite ridge surrounded by mixed conifer forest 1248 Comment
  CHSC36950  Allium peninsulare M. S. Taylor 1982-5-2 4391 Butte On n side of Hwy 70 at Pulga bridge, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC36912  Allium sanbornii var. sanbornii R. A. Schlising 1981-7-24 4166 Butte NW part of county near Lomo (several miles NE of jct Hwy 32 and Humboldt Road to Butte Meadows). 1341 Comment
  CHSC104829  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  UCD55880  Alopecurus carolinianus L. Ahart 1982-5-10 3430 Butte Peter Ahart Ranch, ca. 2 mi northeast of Honcut. 50 Comment
  UCD55884  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Honcut, Peter Ahart Ranch. 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
  CHSC94649  Amaranthus albus Lowell Ahart 2006-9-28 13364 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC96932  Amaranthus albus Lowell Ahart 2007-6-3 13973 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CHSC116012  Amaranthus blitoides Lowell Ahart 2015-10-9 20541 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CDA42839  Amaranthus deflexus L. Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Comment
  CDA3289  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte ca. 6 miles west of Chico. 0 Comment
  CHSC97722  Ambrosia psilostachya Lowell Ahart 2007-10-30 14509 Butte On the south side of the water ditch, on the north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CHSC10835  Ammannia robusta Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC96968  Ammannia robusta L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  CHSC80576  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC46546  Ammi visnaga Vernon H. Oswald 1989-7-11 3840 Butte Rancho Aguas Frias. Aguas Frias Rd between Nelson and Grainland roads, just s of the Western Canal. 30 Comment
  SBBG128725  Amorpha fruticosa L. Ahart 2012-6-9 18177 Butte both sides of small drainage, ca. 30 yards E of Ten Mi House Rd, ca. 1/8 mi N of old homestead, Upper Bidwell Park, ca. 9 mi (air) NE of Chico 269 Comment
  UCD119610  Amsinckia intermedia A. A. Heller 1918-4-19 12984 Butte Pine Creek, 12 miles N of Chico. Comment
  CHSC83913  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  JEPS119535  Amsinckia lycopsoides Lowell Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC44895  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC43929  Ancistrocarphus filagineus Vernon Oswald 1988-4-21 3279 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  SBBG26817  Angelica breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  CHSC45695  Anisocarpus madioides Vernon Oswald 1985-6-17 1842 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  SD240818  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River (Palermo 7.5'Q) 46 Comment
  SEINET10832445  Antirrhinum breweri Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4174 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  SEINET10964553  Antirrhinum cornutum Mary Susan Taylor 1975-10-3 Taylor 937 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC44152  Apocynum androsaemifolium V. Oswald; L. Ahart 1988-7-29 3638 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  JEPS113176  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville 844 Comment
  UCR231504  Apocynum androsaemifolium Anna M. Hurlbutt 2009-8-7 021 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  POM75790  Apocynum cannabinum C. C. Bruce 1897-06 s.n. Butte Little Chico Comment
  CHSC52190  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 234 Butte Ca. 1.4 mi SE of Pulga. 804 Comment
  CHSC52686  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 357 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1633 Comment
  SEINET10448239  Arabis glabra Mary Susan Taylor 1979-5-4 Taylor 1993 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC25285  Aralia californica M. S. Taylor 1977-8-15 1421 Butte W branch of Feather River, ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 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
  CHSC32828  Arbutus menziesii W. Michael Foster 1981-4-24 10 Butte Along both sides of Hwy 70, ca. 2 mi NW of Jarbo Gap and ca. 20 mi N of Oroville. 609 Comment
  CHSC90566  Arbutus menziesii Richard Steward 1988-4-21 5 Butte Ca. .6 mi ne of De Sabla General Store. 792 Comment
  SEINET10449214  Arbutus unedo Mary Susan Taylor Taylor 334 Butte Campus of the California State University, Chico. 61 Comment
  CHSC62509  Arceuthobium campylopodum L. P. Janeway 1993-8-21 4531 Butte Plumas National Forest, LaPorte Ranger District. Southwest end of Watson Ridge; ca 2 mi east of Bald Rock Dome. 1082 Comment
  CAS-BOT-BC409927  Arceuthobium campylopodum Lowell Ahart 1987-10-8 5910 Butte along Ponderosa Way, about 0.5 miles W of Sunset HIll and about 2.5 miles W of Forbestown 853 Comment
  RSA632990  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27461 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633001  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27460 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  POM210201  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 s.n. Butte Humboldt Grade, about 12 miles from Chico. Comment
  UC725751  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1941-12-17 16338 Butte Neal Rd 3 mi below Paradise Comment
  CHSC40334  Arctostaphylos mewukka Lowell Ahart 1985-2-17 4840 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  UC1303073  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte near Forest Ranch Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  UC726644  Arctostaphylos mewukka A. A. Heller 1942-1-29 16358 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  UCR198096  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mi northeast of Swain Hill, 1 mi west-southwest of Quartz Hill, 50 ft east of Grubbes Creek Road 1220 Comment
  CHSC107587  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2011-7-9 17566 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  JEPS109967  Arctostaphylos mewukka subsp. truei Dean W. Taylor 2006-7-12 19564 Butte Swain Hill; northwest flank along County Road 47 1158 Comment
  UC726236  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte on the Neal Road w Optimo Lodge (between Paradise and Magalia) Comment
  POM367380  Arctostaphylos patula H. F. Copeland 1925-5-6 223 Butte Jonesville. 1524 Comment
  RSA31744  Arctostaphylos patula A. A. Heller 1941-2-12 15875 Butte Along the Neal Road, a 1/2 mile West of Optimo Lodge. Comment
  SEINET2028695 Image available Arctostaphylos patula H. F. Copeland 1932-6-29 a 7 Butte The Summit, Jonesville Comment
  UCD52621  Arctostaphylos viscida John Thomas Howell 1975-6-15 51085 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD52817  Arctostaphylos viscida John Thomas Howell 1975-6-15 51084 Butte In Upper Sonoran Zone of volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CAS-BOT-BC48293  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51106 Butte Billie Road at Cliff Drive, Paradise 609 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  RSA134788  Arctostaphylos viscida subsp. viscida P. C. Everett, E. K. Balls, George B. Everett 1959-10-20 23908 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  CHSC110101  Aristida oligantha L. P. Janeway 2012-9-29 11061 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Mid-dle Trail 0.3 km northwest of Bear Hole parking area. 128 Comment
  SEINET10790613  Aristida oligantha Lowell Ahart 2006-10-13 Ahart 13504 Butte T17N, R4E, southwest 1/4 Section 3. Small size plants, on dry gravelly soil, on the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  CAS-BOT-BC400418  Aristolochia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 26 Butte E of Chico off of Skyway Blvd, 1.0 mi. north on Honey -Run Rd. 381 Comment
  CHSC38262  Aristolochia californica Vernon Oswald 1983-3-4 107 Butte Upper Bidwell Park. Brush beside Upper Park Rd. at the power lines. 97 Comment
  JEPS119996  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. Comment
  POM20567  Aristolochia californica Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  UC543770  Aristolochia californica Herbert L. Mason 1927-5-10 3717 Butte ne of Oroville (Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  SEINET10971030  Aristolochia californica Mary Susan Taylor 1980-2-17 Taylor 2359 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  SEINET12088732  Aristolochia californica K. E. Warwick 1978-1 10 Butte 30 m. of Butte Creek at Covered Bridge, 10.2 km ESE of Chico Comment
  CAS-BOT-BC295838  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte About Chico Meadows 1219 Comment
  UC600519  Arnica dealbata H. F. Copeland 1931-6-10 Butte between Willow and Colby Creek; Jonesville Comment
  CAS-BOT-BC82411  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CAS-BOT-BC82414  Arnica discoidea L. P. Janeway 1995-6-20 4802 Butte Watson Ridge; about 1 mi south of Pompys Point. Brush Creek quad 1188 Comment
  SEINET10935029  Arrhenatherum elatius Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4189 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC11849  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville. 1550 Comment
  JEPS49973  Asclepias fascicularis H. A. Dutton 1921-1-1 Butte e Chico (Hooker Oak) Comment
  CHSC28625  Aspidotis densa M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC32620  Aspidotis densa M. S. Taylor; L. Hanson 1981-3-31 3459 Butte End of Spur rd, ca. 3/4 mi se of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 4 mi ne of its jct with Hwy 70 at Jarbo Gap, ca. 19 air mi n of Oroville. 914 Comment
  SDSU6340  Aster oregonensis subsp. californicus D. F. Howe 1960-9-20 2986 Butte North fork of Feather River, 28 miles from Oroville. 518 Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC53951  Astragalus gambelianus Vernon H. Oswald 1991-4-15 4489 Butte Lake Oroville State Recreation Area along the northside of Thermalito Forebay, ca. 0.5 mi west of Hwy 70. 103 Comment
  JEPS119766  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  SEINET10452223  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-5-10 Ahart 4940 Butte Eastern Table Mountain area in gulchlands, about 8 miles north of Oroville. Comment
  CAS-BOT-BC192800  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along the Pacific Highway 9 miles north of Chico Comment
  CAS-BOT-BC68689  Athyrium filix-femina var. californicum Lowell Ahart 1982-9-13 3811 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Vly 1100 Comment
  CAS-BOT-BC68696  Athyrium filix-femina var. californicum Clarence R. Quick 1952-7-1 52 -122 Butte Sierra Nevada - Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CAS-BOT-BC17449  Athysanus pusillus Lowell Ahart 1973-3-7 s.n. Butte Honcut. Peter Ahart Ranch. 150 Comment
  CAS-BOT-BC17451  Athysanus pusillus Lowell Ahart 1988-3-28 5948 Butte About 0.1 mile south of Lumpkin Ridge Road, about 1.5 mile east of Camp 18, aobut 8 miles east of Feather Falls. 1280 Comment
  CHSC38411  Athysanus pusillus Vernon Oswald 1983-1-29 51 Butte Upper Bidwell Park, Chico, along the North Rim Trail at about the level of Horseshoe L. 140 Comment
  SEINET10448433  Athysanus pusillus Mary Susan Taylor 1980-2-23 Taylor 2318 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  SEINET10479061  Atriplex cordulata Lowell Ahart 1983-9-19 Ahart 4454 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  SEINET11924836  Atriplex cordulata A. Ahart, Taylor 1982-1 3861 Butte About 1/10 mi SE of the Gray Lodge Waterfowl Management Area Headquarters, about 12 mi SW of Gridley 30 Comment
  CHSC34171  Atriplex heterosperma L. Ahart 1981-9-10 3149 Butte Along the edge of ditch near entrance to Graylodge Waterfowl Mgmt HQ w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  JEPS90593  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte on w side of a levee road and on s side of Rutherford Rd. just e headquarters complex (ca. 1.75 mi w of Pennington Rd., w of Gridley); Gray Lodge Wildlife Management Area 19 Comment
  JEPS90625  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC9341  Avena barbata B. Anthony 1968-3-29 414 Butte Chico State College Campus, Chico. Comment
  CHSC103704  Avena fatua Lowell Ahart 2010-5-7 16629 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 246 Comment
  CHSC26768  Avena fatua P. Moyer 1972-4-9 168 Butte CSUC Campus. 60 Comment
  CHSC35663  Avena fatua R. E. Preston 1982-4-22 251 Butte Ca. 0.3 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 353 Comment
  CHSC9343  Avena fatua B. Anthony 1968-4-14 456 Butte 3 miles E. of Hamilton City on Hwy. 32. Comment
  CHSC8168  Avena sativa Dave Isle 1969-4-17 339 Butte Off the E. side of Bruce Road about 1 mile N. of the Bruce Rd. - Skyway intersection. 59 Comment
  CHSC93329  Baccharis douglasii Paul Maslin 2005-9-29 628 Butte Plant collected from Big Chico Creek Ecological Reserve which is located off of Hwy. 32, east of Chico, beginning at the upper end of Bidwell Park. Comment
  JEPS102322  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (E side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  CHSC34781  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte On S side of rd, a little E of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi W of Pennington Rd, ca. 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC98183  Baccharis salicifolia John Thomas Howell 1973-7-9 49687 Butte West Branch Feather River on Feather River Highway - Sierra Nevada 304 Comment
  CHSC91663  Bacopa eisenii G. D. Barbe 1984-8-25 4191 Butte Sacramento Valley. Flooded checks on the Rice Experiment Station, n of Biggs. Comment
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Dec 5 2007
  POM180885  Bacopa rotundifolia H. F. Copeland 1923-7-9 843 Butte Nelson. Comment
  CHSC50099  Balsamorhiza sagittata Vernon Oswald 1990-5-12 4203 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  CHSC33226  Barbarea orthoceras R. E. Preston 1981-6-11 84 Butte On a gravel bar on n side of Butte Creek, ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  CHSC36681  Barbarea orthoceras R. E. Preston 1982-7-1 321 Butte At side of Humboldt Rd, ca. 1/4 mi s of Humboldt Summit, ca. 2.2 mi n of Jonesville. 1965 Comment
  CHSC90616  Barbarea orthoceras Sean P. Gallagher 1988-4-20 8 Butte Ca. 0.5 mi w of highway 32 n side of Big Chico Creek. 89 Comment
  UC600710  Barbarea orthoceras H. F. Copeland 1931-6-9 Butte Jonesville by Jones Creek 1524 Comment
  SEINET10448247  Barbarea orthoceras Mary Susan Taylor 1975-8-31 Taylor 892 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC16790  Barbarea verna Lowell Ahart 1980-5-19 2314 Butte Near bridge, South Fork of Feather River. 800 Comment
  CHSC38120  Bellis perennis R. L. Ondricek-Fallscheer 1983-5-10 174 Butte Cultivated lawn area of Butte Hall, California State Univ., Chico campus. 59 Comment
  CHSC28538  Berberis aquifolium var. dictyota M. S. Taylor; J. D. Jokerst 1979-10-13 2247 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) near bridge over creek, ca. 1 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  UC854679  Berberis aquifolium var. dictyota A. A. Heller 1917-3-18 12669 Butte lower end of Iron Canyon (Chico Creek) Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA0036436  Betula Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC102105  Bidens cernua John Thomas Howell 1961-9-22 36725 Butte Bank of Feather River, Oroville 53 Comment
  CHSC30286  Bidens frondosa M. S. Taylor 1978-9-8 1877 Butte Along flood control slough, ca. 4 mi N of Chico, on Hwy 99. 60 Comment
  CHSC32369  Bidens frondosa J. D. Jokerst 1979-11-13 1229 Butte Table Mountain. Top of North Table Mountain, ca. 100 m N of Cherokee Rd at the E edge of the mountain. 396 Comment
  JEPS121991  Bistorta bistortoides Lowell Ahart 2014-7-13 19664 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SD1169  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville, wet meadows and swamps 1550 Comment
  UCD73334  Blennosperma nanum Chuck Hughes 2008-3-26 25 Butte North Table Mountain. 396 Comment
  POM29973  Blennosperma nanum C. C. Bruce 1897-01 2074 Butte Foothills Comment
  SEINET10474478  Blennosperma nanum Mary Susan Taylor 1976-3-6 Taylor 1018 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  UC726942  Boechera breweri subsp. shastaensis A. A. Heller 1920-3-28 13359 Butte Ten Mile House Comment
  CAS-BOT-BC16036  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 0259 Butte 100 meters southeast of Little Chico Creek. 243 Comment
  RSA166348  Boisduvalia cleistogama D. M. Moore 1960-6-1 90 Butte 1.1 mile W of U.S. 40A on road to Honcut Comment
  UC1100857  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  UC1751225  Botrychium montanum Timothy B. Devine 1985-7-7 880 .1 Butte 1 mi NE of Jonesville (Jones Creek at jct with Humboldt Road) 1615 Comment
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Oct 11 2007
  RSA121458  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 miles SE of Butte Meadows. 1555 Comment
  CHSC43743  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC48895  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 8 ft above the summer level of the creek. 91 Comment
  CDA1769  Brachypodium distachyon L. Ahart 2000-5-16 8359 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CHSC67316  Brachypodium distachyon James D. Jokerst; Barbara Castro 1992-5-19 3353 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  CHSC110130  Brassica rapa L. P. Janeway 2012-4-3 10804 Butte Sacramento Valley. Along old rock wall on south side of Humboldt Road 0.3 km east of Bruce Road, across from rehabbed and covered area of old dump site. 86 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  SEINET10901185  Briza minor A. Arthur Heller 1914-4-14 Heller 11289 Butte Hills 8 miles north of Oroville. Comment
  SEINET10967591  Briza minor Orme 1980-4-9 Orme 19 Butte Large population, T22N R2E NW1/4 of Sec. 17. 0.8 km on main road through upper Bidwell Park. 1.6 km N of Chico. Found on the edge of a open, rocky field. Soil a loam to sandy loam. 64 Comment
  SEINET10863379  Brodiaea A. Arthur Heller 1941-5-9 Heller 16105 Butte Roadside banks along the Clark Road to Paradise, below the Clear Creek school house. Comment
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  CAS-BOT-BC482197  Brodiaea elegans subsp. 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 550 Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  UCD147859  Brodiaea nana Robert E. Preston 2005-5-9 2340 a Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 80 Comment
  CHSC70820  Brodiaea sierrae B. Castro; H. Durio, L. Gehrung 1995-7-25 593 Butte Ca. 2.5 air mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84. 944 Comment
  CHSC71461  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte On the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 54 Comment
  SEINET10506848  Bromus Mary Susan Taylor 1981-5-1 Taylor 3581 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC61530  Bromus carinatus Lowell Ahart 1993-6-16 6964 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  CAS-BOT-BC149547  Bromus carinatus var. carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile southwest of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS113250  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
  CHSC34209  Bromus carinatus var. marginatus J. D. Jokerst 1981-8-1 1452 Butte N face of Humboldt Peak ca 200 feet NE of summit. Extreme N corner of Butte county. 2133 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
  JEPS103569  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On 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
  JEPS106156  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 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
  CHSC4298  Bromus diandrus M. M. Gregg 1966-5-27 183 Butte CSC Campus. Behind Dining hall across the creek and between the two bridges east of the dining hall. Along the trail. Comment
  CHSC82676  Bromus diandrus Tara Morgan 2002-4-23 45 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. Off of highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  SEINET4391132  Bromus diandrus G. K. Harris, D. Heinze 1963-4-16 389 Butte Chico 61 Comment
  CHSC66971  Bromus hordeaceus James D. Jokerst 1992-5-19 3361 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC40451  Bromus laevipes Lowell Ahart 1985-5-15 4987 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC96867  Bromus laevipes Lowell Ahart 2007-6-3 13969 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  UCD58918  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  CAS-BOT-BC162360  Bromus madritensis Lowell Ahart 1983-6-21 4078 Butte Along Bloomer Hill Road, ca. 0.75 mile west of the Oroville Quincy Highway, ca. 15 mile northeast of Oroville. 425 Comment
  JEPS110237  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UCD59073  Bromus orcuttianus H. F. Copeland 1930-7-21 s.n. Butte Jonesville. By Butte Creek. 1524 Comment
  SEINET10507670  Bromus rubens Mary Susan Taylor 1980-5-27 Taylor 2674 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
  SEINET10507343  Bromus sterilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4238 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CHSC35748  Bromus tectorum R. E. Preston 1982-5-18 283 Butte Roadside. Forbestown Diversion Dam. 548 Comment
  UC726398  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte near Stirling (Feather River); Feather River 975 Comment
  CHSC59040  Calamagrostis canadensis Lowell Ahart 1992-7-21 6797 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
  CAS-BOT-BC438355  Calandrinia ciliata H. E. Brown 1897-5-1 158 Butte Near Clear Creek Comment
  CHSC44421  Calandrinia ciliata var. menziesii Lowell Ahart 1988-5-29 6011 Butte On the bottom of a small mined wash, about 1/10 mile north-east of the old barn, 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
  SEINET10457152  Callitriche heterophylla Mary Susan Taylor 1978-5-7 Taylor 1607 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10939584  Callitriche heterophylla subsp. bolanderi Mary Susan Taylor 1984-4-6 Taylor 5403 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  NY43613  Calocedrus decurrens S. Bianco 1995-11-9 1051 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
  CHSC57546  Calochortus albus Robert C. Hill 1990-4-12 15 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CAS-BOT-BC487517  Calochortus albus C. C., Mrs. Bruce 1897-5-1 s.n. Butte Foothills Comment
  RSA21309  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  CAS-BOT-BC487813  Calochortus coeruleus Saichi Kawahara 1968-5-4 367 Butte James ripley's property, Graham Road, Paradise 640 Comment
  CHSC27985  Calochortus leichtlinii M. S. Taylor 1978-7-18 1702 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  CAS-BOT-BC491856  Calochortus luteus Carl B. Wolf 1937-5-18 2820 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  SD6511  Calochortus luteus Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  CHSC47071  Calochortus nudus R. A. Schlising 1988-7-11 4593 Butte E of Stirling City, on road to Crane Valley, just beyond junction with Concow Road and Keyser Creek. 1706 Comment
  RSA53633  Calochortus nudus Marion Ownbey, Gerald B. Ownbey 1946-6-24 2939 Butte Grassy meadow along Butte Creek, just below Jonesville Comment
  CAS-BOT-BC493342  Calochortus superbus Marion Ownbey; Gerald B. Ownbey 1946-6-25 2943 Butte Along Bean Creek Road Comment
  CHSC25402  Calycadenia ciliosa M. P. Hayes 1977-9-11 56 Butte Exactly 3.5 mi E of the Hwy 99 overpass on Hwy 32 in Chico, ca 3-10 m S of the road. 137 Comment
  UC596512  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  CHSC46913  Calycadenia multiglandulosa Lowell Ahart 1980-7-4 2448 Butte Near the Oak Grove Cementery, about 1/2 mile southeast of Hurleton. 548 Comment
  CHSC29833  Calycadenia oppositifolia M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2753 Butte Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 441 Comment
  CHSC6141  Calycadenia oppositifolia J. Wheeler 1968-5-16 368 Butte NW side of Devil's Kitchen, Upper Bidwell Park. Comment
  CHSC62147  Calycadenia oppositifolia B. Castro 1987-5-21 124 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. In middle of dirt road along top of ridge. 487 Comment
  HSC97128  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8637 Butte Northern High Sierra Nevada; on west side of Concow Rd. about 2.3 miles NE of the upper end of Concow Reserve 856 Comment
  JEPS117929  Calycadenia oppositifolia John Dittes, Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Upper Bidwell Park road west of Parking Lot-R (approximately 6.7 air-miles northeast of Chico, 2.3 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main); Cascade Range Foothills 228 Comment
  RSA255509  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 miles S of Chico Municipal Airport on Cohasset Rd. Comment
  UC1971667  Calycadenia oppositifolia 1977-7-6 2033 Butte Big Ridge Road, 2.3 mi SE of jct with Oroville - Quincy Hwy, S of Berry Creek, on runoff area just above road (=GDC 699A) 610 Comment
  UC1971670  Calycadenia oppositifolia 1977-7-6 2037 Butte 2.1 mi SE of the Quincy - Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35) 438 Comment
  UC935692  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 mi n of, on Richardson Springs Rd. Chico Comment
  UCD129787  Calycadenia oppositifolia G. F. Hrusa 1997-7-3 14010 Butte Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  UC894266  Calycadenia truncata A. A. Heller 1938-6-14 15152 Butte 23 mi from, on Feather River highway Oroville Comment
  CAS-BOT-BC275383  Calycadenia truncata var. truncata John Thomas Howell 1961-9-22 36772 Butte N Fork of Feather RIver, 12 miles from Oroville 213 Comment
  CDA13915  Calycanthus occidentalis G. F. Hrusa, T. D. Wilfred 1997-7-3 13982 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC116956  Calycanthus occidentalis Matthew Forster 2013-5-7 Butte Five Mile Recreation Area of Middle Bidwell Park, Upper Park Rd., Chico, CA 80 Comment
  CHSC93868  Calycanthus occidentalis Lowell Ahart 2006-6-9 12662 Butte On the west side of Bardees Bar Road, at the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS127135  Calycanthus occidentalis Lowell Ahart 2016-8-29 21317 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  RSA168723  Calycanthus occidentalis R. M. Straw 1962-6-26 2194 Butte Canyon of Middle Fork of the Feather River near Millsaps Bar. [Milsap Bar] 305 Comment
  SEINET10965681  Calycanthus occidentalis Mary Susan Taylor 1976-5-5 Taylor 1111 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  JEPS117419  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  CHSC37362  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3683 Butte Along Highway 32, 7.5 miles S of Tehama/Butte County line. Comment
  JEPS110268  Calystegia atriplicifolia subsp. buttensis Lowell Ahart 2006-6-24 12858 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  CHSC82490  Calystegia occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9734 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS113305  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. Comment
  CHSC34976  Calystegia occidentalis subsp. occidentalis R. A. Schlising; L. A. Bellue 1973-6-13 3096 Butte E of Oroville and Forbestown, 0.6 mi SE of jct Forbestown Road and Challenge Cutoff, along the latter. Comment
  CHSC116496  Camassia quamash subsp. breviflora Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20195 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  UC2026860  Camellia reticulata Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC108832  Camissonia contorta Lowell Ahart 2012-4-17 17882 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
  CAS-BOT-BC160852  Camissonia tanacetifolia subsp. tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Hiwy 97, Butte Creek Comment
  SFV11710  Campanula exigua M. L. Vincent 1963-6-8 396 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  RSA718787  Campanula prenanthoides L. P. Janeway 2006-6-25 8703 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC109004  Capsella bursa-pastoris Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17918 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC19943  Capsella bursa-pastoris M. S. Taylor 1975-3-25 419 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC38043  Capsella bursa-pastoris R. E. Preston 1983-1-9 373 Butte At roadside; w side of the Midway, 200 yds. n of Butte Creek, ca. 3 mi sse of Durham. 39 Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  CHSC96240  Cardamine californica var. californica R. Fischer 2006-3-17 983 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 237 Comment
  CHSC34481  Cardamine oligosperma C. S. Phillips 1976-4-28 13 Butte Ca. 70 yds. s of Butte Creek and 0.3 mi. w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  CHSC92568  Cardamine oligosperma L. P. Janeway 2005-3-1 8335 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA769604  Cardamine oligosperma L. Ahart, John Dittes 2009-3-20 1505 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  CHSC73757  Cardamine pachystigma B. Castro 1996-3-26 658 Butte Ca 7.5 air mi NW of Brush Creek, 0.6 mi SE of Big Bar Mtn, and 150 ft S of USFS Rd 23N28, at E edge of meadow below Wyman Spring. 1188 Comment
  CHSC34523  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-3-27 49 Butte Ca. 50 m e of Coutelenc Rd, 320 m n of its jct with the Skyway, Magalia. 700 Comment
  JEPS121932  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC99414  Carex amplectens Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10530 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. 1740 Comment
  NY25690  Carex amplifolia H. M. Hall 1914-7-25 9782 Butte Jonesville 1554.5 Comment
  CHSC11937  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  UC600698  Carex angustata H. F. Copeland 1927-5-6 1069 Butte Jonesville Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  UCR266839  Carex brainerdii Peter F. Zika 2011-7-6 25538 Butte Northern Sierra Nevada Highlands (n SNH), Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles north of dam on Lost Creek Reservoir 1040 Comment
  CHSC50351  Carex cyrtostachya Vernon Oswald 1990-5-14 4208 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  RSA0010332  Carex cyrtostachya P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  SD257095  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River and the County Road; Ca. 4.0 air miles northeast of Feather Falls. 1219 Comment
  JEPS120128  Carex densa Lowell Ahart 2012-5-20 18095 Butte About 15 feet east of the Guardian Trail, southeast part of Upper Bidwell Park, northest of Chico. Comment
  CAS-BOT-BC34956  Carex densa L. P. Janeway 1988-4-10 2616 Butte Below Centerville Road (Humbug Road) 1.0 mile NE of Honey Run Road. 115 Comment
  SEINET7708167 Image available Carex echinata subsp. echinata H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville; Lassen National Forest Comment
  SEINET8067785 Image available Carex fracta L. Janeway, Gog, L 2008-1 3188 Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UC201825  Carex fracta H. M. Hall 1914-7-25 9786 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  JEPS116088  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
  SEINET4231861 Image available Carex gracilior Unknown 2009-1 15710 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 milesortheast of Chico. Comment
  CHSC43885  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2427 Butte Seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CAS-BOT-BC28191  Carex hirtissima Lowell Ahart 1982-6-1 3529 Butte A little S of the intersection of Black Bart Road and forbestown Road, W of Forbestown. 750 Comment
  CDA14061  Carex hirtissima G. F. Hrusa, T. D. Wilfred 1997-5-1 13708 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Low moist area near creek. Clumping. Uncommon here. Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  SEINET10713179  Carex laeviculmis A. Arthur Heller 1913-6-7 Heller 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC112102  Carex leavenworthii Lowell Ahart 2012-6-14 18190 Butte On the south side of the path, southwest of CARD Community Center,Lower Bidwell Park, Chico. 62 Comment
  CHSC40924  Carex lemmonii Lowell Ahart 1985-6-30 5078 Butte Along a small stream, east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC42820  Carex lemmonii L. P. Janeway 1987-7-5 2449 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC45255  Carex lemmonii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3086 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  POM213964  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville. 1524 Comment
  UCR66603  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 457 Comment
  SEINET10710070  Carex lemmonii Edwin B. Copel 1929-7-5 Copeland s.n. Butte Jonesville, In sunny bog. 1500 Comment
  SEINET12649537 Image available Carex leporinella Lowell Ahart 2010-1 17218 Butte 1918 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CAS-BOT-BC32155  Carex multicaulis John Thomas Howell 1955-6-14 30469 Butte De Sabla Comment
  CHSC44696  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3141 Butte SW-facing slope above Coon Hollow; near dirt rd 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC42280  Carex nudata Steven Triano 1987-4-19 50 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico. Along West Branch Butte Creek. 853 Comment
  UC1609338  Carex nudata Lowell Ahart 1993-4-8 6931 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  UCD140764  Carex praegracilis J. W. Jones 1922-7-1 s.n. Butte Biggs Rice Station. Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC44946  Carex simulata L. P. Janeway 1988-7-29 3125 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  JEPS118051  Carex simulata Lowell Ahart 2011-8-23 17645 Butte Along a small stream, in the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  SEINET8573590 Image available Carex specifica L. Janeway, Gog, L 2008-1 3200 Butte Scott's John Creek. Intersection with Rd 26N27. Comment
  CHSC45072  Carex subfusca Vernon Oswald 1987-5-7 2379 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. On the bottom of a drying dredger pond. 74 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  JEPS102947  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River 1402 Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  UC478549  Carex subfusca E. B. Copeland 1929-7-20 611 Butte in woods by Jones Creek Jonesville 1500 Comment
  SEINET7577207 Image available Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek. 1500 Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  CHSC52236  Carex utriculata L. P. Janeway 1988-6-25 2893 Butte Meadow adjacent to Bull Hill Road 2.6 mi from Skyway. 1508 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC47143  Carex vesicaria Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  CDA13904  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC45064  Carex xerophila Vernon Oswald 1984-4-16 1159 Butte Near the jct. of the Skyway and Coutolenc Rd. just n of Magalia. 716 Comment
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  CAS-BOT-BC248999  Castilleja A. A. Heller 1914-8-7 11658 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  SD4817  Castilleja affinis E. B. Copeland 1930-7-12 468 Butte Jonesville; under north brow of ridge 2100 Comment
  CAS-BOT-BC249106  Castilleja affinis H. E. Brown 1897-5-1 205 Butte Near Clear Creek Comment
  HSC38034  Castilleja applegatei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2487 Butte Just E of Magalia Comment
  JEPS81460  Castilleja applegatei subsp. pinetorum M. S. Taylor 1978-7-19 1776 Butte ca 5 mi ne Jonesville (on e side of Upper Scotts John Rd, ca 2 mi n of its junction with Scotts John Rd) 1889 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC255465  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 Comment
  CHSC114981  Castilleja attenuata Lowell Ahart 2015-4-18 20043 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC44359  Castilleja attenuata Lowell Ahart 1988-3-27 5945 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  HSC102779  Castilleja attenuata L. Ahart 2012-4-17 17875 Butte About 5.0 air mi. SW of Oroville, ~ 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area; ~100 yds. south of where road turns north 35 Comment
  CHSC39943  Castilleja campestris subsp. campestris Lowell Ahart 1984-4-25 4585 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 Comment
  JEPS4554  Castilleja campestris subsp. campestris R. F. Hoover 1938-4-24 3252 Butte 3 mi e Richvale Comment
  CHSC3454  Castilleja exserta Judy Potter 1966-3-28 Butte South of Chico where Butte Creek crosses US 99. Comment
  CHSC115264  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte In a small dry meadow, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. 752 Comment
  CHSC35073  Castilleja lacera R. Schlising; P. Broyles 1979-5-15 3406 Butte NE of Magalia and N of Sawmill Peak. 701 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
  JEPS81864  Castilleja lacera L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5844 Butte 2.9 mi e Keefer junction (along Cohasset Road, ca 8 air mi n of Chico at Big Chico Creek); Big Chico Creek 182 Comment
  CAS-BOT-BC49179  Ceanothus cuneatus Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC1501  Ceanothus cuneatus L. Stone 1930-3-9 Butte Near Richardson Springs. 152 Comment
  CHSC20961  Ceanothus cuneatus M. S. Taylor 1974-3-19 87 Butte On creek side of Humbug Road, in vicinity of Honey Run Covered Bridge. Comment
  CHSC40677  Ceanothus cuneatus Ahart; Jokerst 1985-3-24 4865 Butte Found growing on damp bare serpentine west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CAS-BOT-BC50814  Ceanothus integerrimus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC52464  Ceanothus integerrimus Kate A. Hanson 1977-4-18 Butte Ca 0.5 m N of the Skyway, ca. 0.8 km ESE of Paradise. 600 Comment
  RSA718378  Ceanothus integerrimus L. Ahart 2006-6-24 12860 Butte Dirt road (Ponderosa Way), at an intersection, a gated road goes NW on Cohasset Ridge, 3 3/4 miles (air) NE of Cohasset. 1128 Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  SEINET10493640  Ceanothus integerrimus var. californicus Mary Susan Taylor 1980-5-27 Taylor 2717 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CHSC1508  Ceanothus integerrimus var. macrothyrsus M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC52013  Ceanothus prostratus John Thomas Howell 1962-6-16 37582 Butte Pentz road 2 mi. S. of Magalia 609 Comment
  CAS-BOT-BC52018  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  RSA34042  Ceanothus prostratus Unspecified 1939-4-10 15371 Butte [Unspecified] Comment
  RSA753078  Ceanothus prostratus Dylan O. Burge 2007-5-11 DOB- 921 b Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) N of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 degrees (True) NNW of Magalia. 850 Comment
  UCR133599  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  UC894388  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte e of Chico (Stilson Canon); Stilson Canon 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
  CHSC31748  Centaurium tenuiflorum L. Ahart 1973-6-17 253 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10454837  Centaurium venustum subsp. abramsii Mary Susan Taylor 1980-6-14 Taylor 2874 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC288535  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte Near Pentz Comment
  CHSC46390  Centunculus minimus Lowell Ahart 1989-5-28 6280 Butte On the bottom of small depressions, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS119723  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CHSC64040  Cerastium fontanum subsp. vulgare S. C. Morey 1983-8-4 722 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS108823  Cerastium glomeratum Lowell Ahart 2006-5-8 12593 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  CHSC21067  Ceratophyllum demersum M. S. Taylor 1975-10-4 960 Butte In Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC115429  Cercis occidentalis Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  RSA405399  Cercis occidentalis M. M. Boney 1897-1 1897 Butte [No location data on label] Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  CHSC27316  Cercocarpus betuloides var. betuloides T. B. Devine 1977-7-24 435 Butte Growing beside Humbug Road, .5 mi s of Nimshew. 609 Comment
  CHSC40473  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1985-5-15 4968 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
  CAS-BOT-BC140753  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC109567  Chamaebatia foliolosa L. P. Janeway 2012-6-27 10915 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. Opening in mixed conifer forest. 1000 Comment
  CHSC30216  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz vernal pool, 0.4 mi se of jct of Pentz (Benum) Rd and Hwy 99, ca. 10 mi s of Chico. 54 Comment
  CDA38811  Chamaesyce maculata L. Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC102983  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 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
  JEPS115727  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  SBBG27221  Chamaesyce maculata W. H. Wheeler 1935-10-24 296 Butte about building, Foreign Plant Introduction Station, Chico 76 Comment
  CHSC31696  Chamaesyce nutans L. Ahart 1974-8-14 600 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47676  Chamaesyce nutans Lowell Ahart 1989-9-17 6388 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  JEPS19342  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville Comment
  JEPS120607  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 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
  UC1586634  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald and Lowell Ahart 1990-10-11 4457 Butte 4 mi S of Jarbo Gap (Lake Oroville, Dark Canyon Arm of) 265 Comment
  UC204565  Chamaesyce serpyllifolia A. A. Heller 1914-8-11 11674 Butte w Chico; Sacramento River Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  UC426921  Chamerion angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  CDA13321  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1996-7-9 13167 Butte Sierra Nevada; approx. 0.5 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC32693  Cheilanthes gracillima M. S. Taylor 1981-3-24 3438 Butte S side of Hwy 70, in curve in rd across the river from Mayaro, ca. 1 mi. e of Pulga. 487 Comment
  SEINET10529915  Cheilanthes gracillima Mary Susan Taylor 1983-1-17 Taylor 5214 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  SEINET10529937  Cheilanthes siliquosa Mary Susan Taylor 1979-10-13 Taylor 2273 Butte T23N R4E e center sec 29. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 11.1 mi N of its jct with Concow Road, 1.9 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  SEINET10904478  Chenopodium ambrosioides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5163 Butte T17N R2E se/se sec 18. Pennington quad. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 0.5 mi e of Penning- ton Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10479091  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-29 Taylor 968 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC61329  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte About 1/8 mile south-west of the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 Comment
  SEINET10449191  Chimaphila menziesii Mary Susan Taylor 1981-5-13 Taylor 3704 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
  UCD80427  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0198 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca.75 m from the east fence. 85 Comment
  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
  CAS-BOT-BC498627  Chlorogalum angustifolium H. M. Hall 1917-5-13 10302 Butte Plains west of Pennington Comment
  UCD138421  Chlorogalum angustifolium J. A. Jernstedt 1976-5-21 356 Butte Intersection of Palermo Road and Power House Hill Road, ca. 0.5 mile east of Highway 70. 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
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  POM219008  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville. 1650 Comment
  SEINET12328380  Cicendia quadrangularis M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5398 Butte ca 0.5mi n of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise? 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
  SEINET10900733  Cinna latifolia Lowell Ahart 1991-8-25 Ahart 6708 Butte About 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Bush Creek. Uncommon. Yellow Pine Forest. 1219 Comment
  UC328923  Circaea alpina subsp. pacifica unknown Butte near Camp Colby Comment
  CAS-BOT-BC288041  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  SEINET10865742  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-B Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  CAS-BOT-BC163542  Clarkia arcuata G. P. Van Eseltine 1918-5-5 1724 Butte Near Nimshew 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
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC86588  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7799 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
  UCD104440  Clarkia concinna M. Vincent 1963-6-8 395 Butte Honey Run Road. Comment
  RSA32817  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte On wooded slope in leaf mold on Feather River Highway 22 miles from Oroville. 610 Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC88643  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 361 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  LA206022  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis, M. R. Roberts 1951-5-19 827 Butte road from Nimshew to Butte Creek Canyon, 1.65 mi. below Nimshew Comment
  UCD169417  Clarkia gracilis subsp. albicaulis Samantha Hillaire 2001-5-16 s.n. Butte Vicinity of Ponderosa Way, about 0.3 miles southeast of Big Chico Creek. On a steep roadcut of a little-used road. 353 Comment
  SFV10925  Clarkia mildrediae M. L. Vincent 1968-6-10 848 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  CDA13328  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13174 Butte Sierra Nevada; Near intersection of 22N89 and Hwy 162. Approx. 0.2 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC73801  Clarkia mildrediae subsp. lutescens Ann Willyard 1997-7-16 Butte Ca 1.5 air mi S of Deer Park site on Rock Island Ridge, at E edge of USFS Rd 23N60 as it parallels Marble Creek, ca 0.5 air mi NE of its confluence with Little North Fork Feather River. On SW-facing roadcut ca 0.2 mi N of hairpin curve in road. 1143 Comment
  CHSC86132  Clarkia mildrediae subsp. lutescens John Dittes; Josephine Guardino 2002-6-27 622 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.9 air-mile east of Middle Fork Feather River, ca. 5.0 air-miles north by northwest of town of Feather Falls, ca. 1.6 air-mile north of Feather Overlook. South-facing slope below FS access road; ca. 3,000 feet north of Fall River. 1036 Comment
  CHSC64112  Clarkia mosquinii L. P. Janeway; B. Castro 1994-7-6 4683 Butte West end of Jackson Ranch Ridge; 0.8 mi east-northeast of the falls of Feather Falls. 1051 Comment
  CHSC70739  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte South end of Swayne Hill, along Road 23N28 0.8 mi west of Road 22N34. South-facing road cutbank. 731 Comment
  JEPS109585  Clarkia mosquinii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville, along Forest Road 20N24) 975 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  UCD104879  Clarkia purpurea R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  CAS-BOT-BC172534  Clarkia purpurea subsp. purpurea Lewis S. Rose 1963-6-5 63143 Butte 3 mi. W of Palermo 45 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CAS-BOT-BC172377  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3987 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CAS-BOT-BC164781  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC11091  Clarkia rhomboidea Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC59112  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill. Near canyon bottom. 560 Comment
  CHSC96755  Clarkia rhomboidea Lowell Ahart 2007-5-29 13923 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  RSA108430  Clarkia rhomboidea Harlan Lewis, M. Lewis 1951-05 824 Butte Road from Oroville to Magalia, 1.65 mile south of road to Paradise. Comment
  CHSC56066  Claytonia palustris L. P. Janeway 1988-7-29 3103 Butte Along Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). 1325 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
  RSA469283  Claytonia parviflora subsp. parviflora L. Ahart, Peter Ahart 1984-6-10 4711 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SFV1192  Claytonia perfoliata M. L. Vincent 1961-3-29 27 Butte Sacramento Valley Chico. Bidwell Park. 100 Comment
  CAS-BOT-BC439754  Claytonia perfoliata Lowell Ahart 1982-4-24 3369 Butte About 3/4 mile south-west of the Myers home, Myers Ranch, Sutter Buttes 50 Comment
  SEINET11931358  Claytonia perfoliata S. C. Joslin 1978-1 14 Butte ca 4 mi NW of Chico on Cohasset Rd at intersection with Richardson Springs Rd 91 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
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CHSC34945  Claytonia perfoliata subsp. perfoliata Debra Barton 1974-4-7 11 Butte Abundant at Campotel Campground, 3 mi e of Oroville on Hwy. 162, left side of left road entrance, 400 ft from entrance. Comment
  SEINET10572730  Claytonia perfoliata subsp. perfoliata Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5379 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  SEINET195015  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico CA Comment
  CHSC56071  Claytonia rubra subsp. rubra L. P. Janeway 1987-5-20 2083 Butte North Fork Feather River; at edge of Hwy 70, 3.1 mi northeast of Pulga Bridge. 472 Comment
  CHSC52815  Clematis lasiantha Michael P. Crivello 1979-4-14 Butte 3 mi ne intersection of Skyway and Humbug rd., on Skyway. 100 yds s of road, on south slope. 137 Comment
  POM181656  Clematis lasiantha Williams 1927-04 11 Butte Near Richardson's Springs, Butte County Comment
  CHSC84380  Clematis ligusticifolia L. Ahart; P. Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  POM97566  Clematis ligusticifolia C. C. Bruce 1897-06 1902 Butte Big Chico Comment
  CHSC50061  Collinsia heterophylla Lowell Ahart 1990-4-8 6449 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  SFV3357  Collinsia sparsiflora M. L. Vincent 1962-4-16 196 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  UC1012173  Collinsia sparsiflora var. collina F. W. Pennell, A. A. Heller 1940-6-5 25679 Butte Route 24; 2 mi. up, along Feather River, above Oroville. 609 Comment
  HSC97025  Collinsia tinctoria L. Ahart 2006-6-9 12654 Butte W side of Bardees Bar Rd., N of small stream, 1/8 mi. W of bridge across N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  JEPS115671  Collinsia tinctoria Lowell Ahart 2009-5-30 15785 Butte On dry soil, around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC47066  Collomia grandiflora R. A. Schlising; P. Broyles 1988-7-9 4588 Butte Head of Concow Creek at Concow Meadows, s of Flea Valley. Edge of meadow and forest. 1097 Comment
  SBBG29150  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 Comment
  CHSC38590  Collomia heterophylla Vernon Oswald 1983-5-15 494 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion channel. 79 Comment
  JEPS108549  Collomia heterophylla L. P. Janeway 1994-5-26 4654 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. Southeast-facing low road cutbank 1226 Comment
  UC392188  Collomia linearis E. B. Copeland July, 1929 Butte in open woods above Jonesville 1750 Comment
  CHSC43703  Collomia tinctoria Vernon Oswald 1983-8-4 958 Butte Near Humboldt Rd. 3.5 mi n-e of Butte Meadows. Along Butte Creek. 1414 Comment
  UCD118256  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. Along Butte Creek. 1500 Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  CHSC42577  Conium maculatum Vernon Oswald 1983-6-28 781 Butte Along roadways at Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  SEINET10474385  Conyza floribunda Mary Susan Taylor 1974-1 Taylor 318 Butte 61 Comment
  UC429104  Corallorhiza striata R. M. Austin July, 1896 224 Butte Colby Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  CHSC89482  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 213 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  UC426963  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville 1650 Comment
  SEINET12137282  Cornus nuttallii T. R. Norton 1977-1 11 Butte ca 6.5 NE of Paradise, 1.5 mi N of Magalia, 0.5 mi N of Magalia Reservoir, 0.25 mi E of the Skyway Comment
  CAS-BOT-BC209588  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 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
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  RSA104167  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Not noted Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  SBBG119778  Coronilla varia L. Ahart 2006-6-24 12862 Butte E side of dirt rd (Ponderosa Way), on Cohasset Ridge, ca. 4 air mi NE of Cohasset 1113 Comment
  CDA24604  Corydalis caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  SEINET10476246  Corydalis caseana Lowell Ahart 1983-8-16 Ahart 4301 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
  CHSC20387  Corydalis caseana subsp. caseana L. M. Mayer; D. E. Brink 1974-8-20 Butte Willow Creek, at the Tehama County line. 1/2 mi downstream from the junction of the creek and Colby Mountain Lookout Rd. Comment
  CAS-BOT-BC401855  Corydalis caseana subsp. caseana Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  SD52101  Corylus cornuta var. californica Frank Stephens Jun 1894 9694 Butte Mountain Home Comment
  SEINET10478569  Corylus cornuta var. californica Mary Susan Taylor 1980-4-27 Taylor 2555 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC45662  Cotula australis Vernon Oswald 1983-11-16 1080 Butte Campus of California State University, Chico, near Arcadian and Legion Avenues. 59 Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS106291  Cotula australis Lowell Ahart 2004-3-12 10703 Butte Grave of Tillie Moody, east of the entrance gate, Thompson Flat Cemetery, about 1/8 mile east of Cherokee Road, about 1 mile north of Oroville 61 Comment
  SEINET10473724  Cotula coronopifolia Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 100 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
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC44954  Crassula connata Pauleen Broyles 1988-3-12 1100 Butte Between Reservoir and Singer Creek. The Nature Conservancy Vina Plains Preserve. Comment
  SEINET12215662  Crassula erecta Unknown 1977-1 19 Butte ca 75 m NW of Cherokee Road, North Table Mountain, 8 km N of Oroville 366 Comment
  SEINET10449716  Crassula muscosa Mary Susan Taylor 1980-3-28 Taylor 2403 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC106606  Crataegus monogyna L. P. Janeway 2011-4-20 10235 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  JEPS118636  Crataegus monogyna L. P. Janeway 2011-6-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. 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
  JEPS93989  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte ca. 7 (air) mi. n. Oroville (on bottom of very large vernal pool ca. 0.75 mi. n.w. of the cattle chute on the w. side of Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  POM313218  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC103214  Cryptantha crinita Paul Kirk; John Hunt 2010-5-25 101 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  CHSC46756  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte West of the seep, along the dirt road 1/10 mile north-west of the water tower, north of the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 457 Comment
  SEINET9628262 Image available Cryptogramma acrostichoides H. F. Copeland 1932-8-19 Butte Woods below crest Butte Creek. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  CHSC3014  Cupressus fastigiata Carl Pejsa 1958-4-19 33 A Butte Bidwell Park Forestry Station. Comment
  UC335114  Cupressus macnabiana Lemmon Butte Bidwell's Comment
  CHSC69  Cupressus sempervirens K. McKenzie 1928-4-25 Butte Planted specimen on Chico State Campus. Comment
  CHSC48359  Cuscuta californica var. californica Vernon Oswald 1988-6-14 3378 Butte Jordan Hill Rd. 1.0 mi (odometer) e of the West Branch of the Feather River. 579 Comment
  CHSC50547  Cuscuta californica var. californica Vernon Oswald; Lowell Ahart 1990-7-5 4348 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  JEPS98274  Cuscuta campestris Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  JEPS47093  Cuscuta indecora W. K. Studley 1910-10-31 4 d Butte Chico 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
  CHSC41976  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larking Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  SEINET10515390  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte 4-5 mi S of junction of Chico-Butte Hwy & Ord Ferry Road, 20 mi S of Chico on both sides of Chico-Butte Hwy; dried up Freshwater Marsh and slough area. Comment
  CHSC21260  Cynoglossum grande M. S. Taylor 1973-3-27 30 Butte Ca. 5 yds s of Humbug Rd, ca. 19 mi se of Chico. 548 Comment
  UCD119179  Cynoglossum grande Harriet Sindel 1970-2-20 20 Butte South side of Highway 32 (old road), 7.3 miles east of Chico. 182 Comment
  SEINET10497516  Cynoglossum occidentale Mary Susan Taylor 1981-5-4 Taylor 3595 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
  CHSC39516  Cynosurus echinatus Lowell Ahart 1983-6-12 1495 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CAS-BOT-BC114743  Cyperus difformis Herbert L. Mason; Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club. Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CHSC39666  Cyperus eragrostis Lowell Ahart 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  HSC87074  Cyperus eragrostis L. P. Janeway, C. A. Janeway 1986-9-14 1864 Butte Pine Creek Landing 40 Comment
  RSA0037179  Cyperus eragrostis Lowell A. Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  UCD54072  Cyperus eragrostis L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  UCD141069  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte along Durham-Pentz Road 0.7 mile east of Clark Road. 118 Comment
  CHSC100231  Cyperus erythrorhizos John Dittes 2003-10-8 848 Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC108132  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC66365  Cyperus erythrorhizos Vernon H. Oswald 1996-6-20 7828 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 2, Sanctuary II. 33 Comment
  CHSC68389  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1884 Butte Inside the bend at the junction of Chico-Butte City Hwy and Road 48. 28 Comment
  UC698548  Cyperus erythrorhizos P. B. Kennedy Aug 9 1921-Aug 10 1921 Butte Comment
  CHSC34317  Cyperus flavescens L. Ahart 1981-9-6 3123 Butte In the rd gutter across the rd from the rest area just a little s of the Arch Rock tunnel on Hwy 70, ca. 4 mi n of Pulga. 500 Comment
  JEPS110330  Cyperus flavescens Lowell Ahart 2006-10-8 13429 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
  SEINET4896961  Cyperus flavescens L. Ahart, V. H. Oswald 1999-8-13 8143 Butte 12 miles SW of Chico. Legal: T20N R1W 32 Comment
  JEPS98262  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte 12 air mi SW of Chico (near a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ordbend) 32 Comment
  JEPS119912  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of Oroville Airport. Comment
  CHSC78283  Cyperus niger Lowell Ahart 2000-6-21 8500 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CDA38968  Cyperus niger L. Ahart 2000-8-23 8662 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CHSC113157  Cyperus squarrosus Lowell Ahart 2013-11-13 19244 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC59011  Cyperus squarrosus Lowell Ahart 1992-7-21 6811 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
  UC600705  Cyperus squarrosus H. F. Copeland 1930-7-29 1351 Butte neighborhood of Jonesville 1828 Comment
  UC837509  Cyperus squarrosus A. A. Heller 1917-7-28 12840 Butte Butte Meadows 1280 Comment
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CHSC109749  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UCD141152  Cyperus strigosus L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  SEINET10535617  Cystopteris fragilis Mary Susan Taylor 1980-4-1 Taylor 2417 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CAS-BOT-BC190483  Dactylis glomerata John Thomas Howell 1962-6-16 37579 Butte Sierra Nevada. Pentz road 2 miles south of Magalia. 609 Comment
  CAS-BOT-BC445502  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte 3 miles west of Chico Comment
  CHSC2049  Damasonium californicum R. Morford 1921-4-8 Butte Dodge Lands. 30 Comment
  CHSC2050  Damasonium californicum 1947-5-27 Butte Dayton road near Chico. 67 Comment
  CHSC68914  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte Along a stream, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  NY41067  Darmera peltata S. Bianco 1995-9-17 1027 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  SEINET10483090  Darmera peltata Mary Susan Taylor 1980-3-19 Taylor 2387 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  RSA443113  Datura wrightii L. Ahart 1985-9-14 5167 Butte East side of a building, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC31862  Daucus carota L. Ahart 1977-7-14 1467 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10873898  Daucus pusillus Mary Susan Taylor 1982-5-21 Taylor 4491 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  CAS-BOT-BC8569  Delphinium hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1.5 miles W of Oroville Quincy Highway 457 Comment
  CHSC1445  Delphinium hesperium E. Scharsch 1931-4-1 Butte Magalia. 731 Comment
  CHSC56875  Delphinium nudicaule Mark Bradford 1983-4-1 10 Butte Summit of Table Mountain, ca. 4 mi. n of Oroville, ca. 2 mi. sw of Cherokee, 1 mi. n of Table Mountain Road. 91 Comment
  CHSC57139  Delphinium nudicaule J. B. Locey 1975-5-6 19 Butte Ca. 50 yds e of Humbug Road, ca. 1 mi n of Centerville. 182 Comment
  CHSC76956  Delphinium nudicaule Ida Ryan 1893-4-1 Butte Big Chico Creek. Comment
  UC854189  Delphinium nuttallianum A. A. Heller 1938-4-14 15036 Butte at head of a ravine Table Mountain Comment
  CAS-BOT-BC121621  Delphinium patens subsp. patens Peter H. Raven 1953-5-9 5444 Butte 7.2 miles from Bangor on road to Oroville Comment
  CHSC3854  Delphinium patens subsp. patens L. E. Dunkel 1965-3-30 11 Butte Along south road ascending Table Mountain. 243 Comment
  CHSC56782  Delphinium patens subsp. patens M. S. Taylor 1981-4-8 3508 Butte N side of logging landing site, just w of power lines, off logging rd ca. 1/2 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  CAS-BOT-BC121618  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4252 Butte E of Bidwell Bar Bridge Comment
  CAS-BOT-BC17024  Delphinium variegatum Lewis S. Rose 1945-5-12 45046 Butte Richardson Springs 304 Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  SEINET12093974  Delphinium variegatum Unknown 1988-1 37 Butte vic. Horseshoe Lake, ca 3 mi NE of Chico 91 Comment
  CAS-BOT-BC16982  Delphinium variegatum subsp. variegatum Lowell Ahart 1980-5-17 2297 Butte 1/2 mile south-east of Hurleton. 600 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 Comment
  CHSC85393  Delphinium variegatum subsp. variegatum John Dittes; Josephine Guardino 1992-5-7 479 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  UC66173  Delphinium variegatum subsp. variegatum A. A. Heller 1902-5-10 5520 Butte Clear Creek P.O. Comment
  CAS-BOT-BC33229  Dentaria pachystigma var. dissectifolia LeRoy Ellsworth Detling 1935-4-18 1631 Butte Magalia Comment
  LA206368  Deschampsia cespitosa A. A. Heller; 1928-7-10 14621 Butte Butte Meadows Comment
  JEPS98346  Deschampsia elongata Lowell Ahart 2000-6-29 8549 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  POM365045  Deschampsia elongata L. Ahart, P. Ahart 1984-6-10 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC49526  Desmazeria rigida Vernon Oswald 1985-6-15 1832 Butte Near N. Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 53 Comment
  CHSC637  Dicentra formosa R. Carter 1964-5-16 94 Butte Feather River Canyon, 200 yds. Up N side Bear Creek opposite large tunnel. 609 Comment
  UC1362265  Dicentra formosa Kingsley R. Stern 1964-5-15 2070 Butte ca 1.7 mi n Magalia (vicinity of Magalia Reservoir, just off Skyway road) Comment
  CHSC19653  Dicentra formosa subsp. oregana K. R. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC209181  Dichanthelium acuminatum subsp. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi. e of Lake Madrone 997 Comment
  CHSC56817  Dichelostemma capitatum subsp. capitatum Cynthia D. Seaman 1980-4-11 4 Butte 10 ft e of creek, ca. 1/2 mi n on dirt road off Big Bend Rd, ca. 5 mi se of Hwy 70, ca. 27 mi n of Oroville. 719 Comment
  CHSC90588  Dichelostemma capitatum subsp. capitatum L. Orme 1980-3-20 7 Butte Clark Road, 3.2 km. S. of Paradise. Found on hillside. 370 Comment
  RSA333553  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-23 32 Butte South end of 18th Street, about 0.25 mile S of State Route 162 in Thermalito. 150 Comment
  CDA13865  Dichelostemma multiflorum G. F. Hrusa, T. D. Wilfred 1997-5-7 13723 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC501094  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  SEINET10839403  Dichelostemma multiflorum Lowell Ahart 1985-6-17 Ahart 5057 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET8476819  Dichelostemma volubile M. J. Williams, W. Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  CAS-BOT-BC502514  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CAS-BOT-BC502525  Dichelostemma volubile H. C. Cantelow 1940-5-10 3911 Butte E of Oroville. Old road to Bucks Lake. Comment
  CHSC46594  Digitalis purpurea V. Oswald; L. Ahart 1989-7-12 3841 Butte Loggin road (T-line) 0.5 mi (air) wnw of Bald Mtn Lookout, ne of Stirling City. 1487 Comment
  UCD63991  Digitaria sanguinalis E. Wilson 1934-9-3 Butte Biggs Rice Station. Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  SEINET8205896  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte plentiful near Cohasset; in open places in the chaparrel, which here is mainly Quercus Oerstediana; near upepr limt of digger pine in the Sierra foothills. Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC153213  Diplacus kelloggii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC44770  Diplacus torreyi R. Banchero 1980-6-17 249 Butte Paradise Lake, 1.1 mi W of the jct of Loucretia and Coutolenc Rds. 762 Comment
  CHSC44809  Diplacus torreyi R. Banchero 1980-6-6 200 Butte Along Bald Rock Rd 1.5 mi S of the upper jct with Hwy 162. 999 Comment
  CHSC79836  Diplacus torreyi G. F. Hrusa; T. D. Wilfred 1996-7-9 13114 Butte Plumas National Forest. Above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1300 Comment
  CHSC45523  Dipsacus fullonum Lowell Ahart 1988-10-28 6191 Butte On the north side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CHSC2141  Distichlis spicata H. Silberman; D. Isaac 1949-9-19 Butte Grey Lodge State Game Refuge. Comment
  CDA34546  Dittrichia graveolens L. Ahart 2007-10-3 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. Comment
  CAS-BOT-BC136234  Dodecatheon alpinum H. F. Copeland 1920-8-12 120 Butte Jonesville Meadow 1219 Comment
  CHSC81291  Dodecatheon clevelandii subsp. patulum J. Trizzino 2001-2-22 4 Butte North side of Humboldt Road, ca. 0.5 mi east of intersection with Bruch Road, about 300' south of rock wall on grazed area. 112 Comment
  POM287081  Dodecatheon clevelandii subsp. patulum Lyman Benson 1935-3-27 6358 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  CHSC46085  Dodecatheon hendersonii Lowell Ahart 1989-3-25 6197 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC67289  Dodecatheon hendersonii James D. Jokerst; L. Ahart 1985-3-24 2178 Butte Rocky Ridge' ca. 1.33 mi NE of N edge of Lake Concow on road to Flea Mtn. 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
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  HSC92447  Dopatrium junceum L. Ahart 1974-7-20 556 Butte Peter Ahart Ranch, about 2.25 mi. N and 0.5 mi. E of Honcut, about 12 mi. S of Oroville 37 Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  POM180914  Downingia bicornuta H. F. Copeland 1923-5-1 873 Butte Nelson. 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
  CHSC84243  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  UC1124234  Draperia systyla J. E. Sowder, A. E. Wieslander 1933-6-24 90 Butte 0.5 mi E of Inskip; Chico Quad. 1432 Comment
  CAS-BOT-BC159642  Drymocallis glandulosa var. glandulosa John Thomas Howell 1962-6-15 37505 Butte Magalia 731 Comment
  CAS-BOT-BC157791  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC12109  Dryopteris arguta J. M. Pitts 1972-4-16 133 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  HSC23372  Dryopteris arguta Larry D. Scott 1971-4-17 27 Butte 4 mi. NE of Covered Bridge on the N side of Honey Run Rd. Comment
  POM120873  Dryopteris arguta C. C. Bruce 1897-05 s.n. Butte Butte Creek. Comment
  CHSC37102  Dysphania ambrosioides L. Ahart 1982-9-12 3794 Butte Along banks of North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  CAS-BOT-BC197004  Echinochloa colona Lowell Ahart 1977-8-14 1547 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS120722  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CHSC97687  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  SEINET10509315  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 A 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
  SEINET10564198  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte 6 mi S of Chico on W side of Goodspeed-Watt Road. With Jim Jokerst. Edge of ricefield. 34 Comment
  JEPS93836  Echinochloa muricata Lowell Ahart 1998-7-1 8031 Butte about 7 air mi n of Oroville (50 yards n of a poor east west fence, about 3/4 mi nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 350 Comment
  JEPS95994  Echinodorus berteroi Lowell Ahart 1999-9-21 8275 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
  UCD150364  Elatine ambigua William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd., rice field. Comment
  JEPS124225  Elatine californica Lowell Ahart 2015-3-31 19984 Butte About 1/8 mile south of Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. Comment
  SEINET10447963  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 4596 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC82227  Elatine rubella Lowell Ahart 2002-4-10 9478 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS98375  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte 2 1/4 air miles N of Biggs (100 ft N of Hamilton Road, about 1/8 mi E of Riceton Road, Rice Experiment Station) 30 Comment
  CDA38956  Eleocharis acicularis var. acicularis L. Ahart 2000-5-11 8338 Butte Along a small wash, about 100 yards south of a dirt road, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC46463  Eleocharis bella V. Oswald; L. Ahart 1989-6-27 3829 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Meadow along Butte Creek. 1767 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS98317  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte 4 air mi NE of Feather Falls (100 yds N of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC38905  Eleocharis engelmannii Vernon Oswald 1983-6-27 775 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  UCD19372  Eleocharis engelmannii E. Dean; with J. Ditomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC71405  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte Bottom of a vernal pool, about 1/2 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 408 Comment
  JEPS127225  Eleocharis macrostachya Lowell Ahart 2016-5-30 20893 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC78300  Eleocharis montevidensis Lowell Ahart 2000-6-21 8497 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  RSA695401  Eleocharis obtusa var. engelmannii L. Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC116302  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  SEINET10466896  Eleocharis palustris Mary Susan Taylor 1982-4-28 Taylor 4368 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  SEINET7586923 Image available Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 549 Comment
  CHSC72402  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9676 Butte Pond on east side of Larkin Rd. just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. Along the receding north shore of the pond. 41 Comment
  RSA716570  Eleocharis quinqueflora L. Ahart 2000-6-29 8542 Butte On the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  JEPS115253  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  SEINET10467320  Eleocharis rostellata Mary Susan Taylor Taylor 837 Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC112032  Eleocharis suksdorfiana M. S. Taylor 1978-6-24 1668 Butte In Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows. 1371 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
  UCD61403  Elymus elymoides E. B. Copeland 1929-7-24 Butte Jonesville. 1575 Comment
  CHSC43132  Elymus elymoides subsp. elymoides Robert Banchero 1981-7-18 605 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. Roadside. 1749 Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CHSC71212  Elymus glaucus subsp. glaucus Lowell Ahart 1998-6-3 7973 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
  CHSC102502  Elymus glaucus subsp. jepsonii Lowell Ahart 2009-5-30 15795 Butte About 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SBBG707  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 mi NW of Chico Comment
  CHSC117316  Elymus ponticus L. P. Janeway 2016-6-2 12103 Butte Northern High Sierra Nevada. Plumas National Forest; Fileds Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC41306  Elymus trachycaulus subsp. subsecundus S. C. Morey 1983-7-22 542 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42951  Elymus trachycaulus subsp. subsecundus Lowell Ahart 1987-7-3 5789 Butte On a gravel bar, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC38166  Enemion occidentale Vernon Oswald 1983-2-14 71 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 200 ft e of Parking Area R (on the section of trail leading eastward to Brown's Hole). 231 Comment
  SEINET12196472  Epilobium adenocaulon E. L. Rilla 1976-9-18 29 Butte 0.5 mi S of Gridley Road on Pennington Road in Gray Lodge Waterfowl Management area 21 Comment
  CHSC111964  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  JEPS110127  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  CHSC58931  Epilobium ciliatum subsp. glandulosum Lowell Ahart 1992-7-26 6853 Butte In a meadow along a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  UC600552  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-23 Butte meadow near Jonesville Inn; Jonesville 1500 Comment
  POM183924  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-19 s.n. Butte Jonesville; beside Butte Creek, near the source 1800 Comment
  SEINET9070861 Image available Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-1 388 Butte Jonesville 1500 Comment
  CHSC102619  Epilobium densiflorum Lowell Ahart 2009-7-9 16027 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC23767  Epilobium densiflorum M. S. Taylor 1975-6-25 800 Butte Along trail, ca. 100 yds w of Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 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
  CHSC70343  Epilobium minutum L. Ahart 1982-6-4 3536 A Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC92586  Epilobium minutum L. P. Janeway 2005-5-29 8400 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  SEINET10453182  Epilobium paniculatum Mary Susan Taylor 1980-9-27 Taylor 3343 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC109673  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  JEPS115378  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA794970  Equisetum hyemale var. affine L. Ahart 2010-9-13 17151 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  JEPS110229  Equisetum laevigatum Lowell Ahart 2006-7-16 12984 Butte In the west edge of a large wet 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
  JEPS120091  Eragrostis curvula Lowell Ahart 2012-6-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. Comment
  CHSC34778  Eragrostis mexicana subsp. virescens L. Ahart 1981-11-6 3229 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. Along edge of the road. 35 Comment
  CHSC51039  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-8-15 6585 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
  JEPS76254  Eragrostis pectinacea var. pectinacea W. L. Jepson 1939-8-17 19465 Butte Feather River bottom near Oroville; Feather River bottom 45 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
  UCD65677  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs. Comment
  CHSC35051  Eremogone cliftonii R. A. Schlising; R. Banchero 1980-5-12 3588 Butte Along North Fork of Feather River, 1.3 miles NE of Poe Power Dam and 2.9 miles S of Arch Rock along Hwy 70; roadside. 560 Comment
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Jul 8 2014
  CHSC41481  Eremogone cliftonii L. P. Janeway; Randy Harrison, Gary Benson 1984-9-10 Butte Plumas National Forest. Vicinity: N Fk Feather River near Mayaro. On northwest side and above the river. Along long sharp switchback in county rd 66553. 762 Comment
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Jul 8 2014
  JEPS120946  Erigeron annuus Lowell Ahart 2013-4-20 18554 Butte West side of Wilson Creek, SW of the dredge pond, about 1/4 mile SW of the barn, about 1/4 mile W of Honcut Cemetery, about 3 air miles NE of Honcut. Comment
  SEINET10971237  Erigeron inornatus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4245 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC295420  Erigeron inornatus var. calidipetris H. F. Copeland 1920-8-12 123 Butte Jonesville 1219 Comment
  UC725766  Erigeron inornatus var. inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  CHSC113805  Eriodictyon californicum M. Ocken 2011-4-25 Butte Butte Creek Ecological Preserve. 106 Comment
  JEPS123874  Eriodictyon californicum Lowell Ahart 2015-4-30 20123 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  RSA401485B  Eriodictyon californicum M. Vincent 1962-4-19 213 Butte Humbug Road, 3 miles northeast of Centerville Comment
  SEINET5495493  Eriodictyon californicum R. McKee, H. Westover 1918-6-5 s.n. Butte Paradise Comment
  CAS-BOT-BC259399  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville 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
  UC1562313  Eriogonum nudum var. pubiflorum Vernon Oswald and Lowell Ahart 1990-6-27 4337 Butte ca. 0.5 air mi ne Junction House (site) (Jordan Creek-Marble Creek Rd. (23N60) between Spoon Ravine and Marble Creek, e side of Oro-Quincy Hwy.) 1109 Comment
  CAS-BOT-BC269850  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Along banks of lower Feather River Canyon west of Belden 457 Comment
  CAS-BOT-BC268613  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Jonesville 1524 Comment
  CHSC58940  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte About 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek Comment
  UCD101244  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, ridge between Jones and North Willow Creeks. 518 Comment
  CHSC69427  Eriogonum umbellatum var. ahartii Lowel Ahart 1997-8-19 7870 Butte On the south side of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles (air) northeast of Feather Falls. 1280 Comment
  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  CAS-BOT-BC268238  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  UC1562322  Eriogonum umbellatum var. nevadense Vernon Oswald and Lowell Ahart 1990-7-19 4373 Butte ca. 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca. 0.7 mi w of Plumas County line); Philbrook Creek 1950 Comment
  UC1594723  Eriogonum umbellatum var. nevadense Lowell Ahart 1992-7-29 6868 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  SEINET10904446  Eriogonum umbellatum var. speciosum Mary Susan Taylor 1981-7-10 Taylor 4063 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC31069  Eriogonum vimineum M. Hayes; J. Warner 1977-9-11 59 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of Hwy 99 and Hwy 32 overpass in Chico. 914 Comment
  CHSC35696  Eriophyllum lanatum var. croceum J. D. Jokerst 1982-5-1 1547 B Butte N of Concow Resv. N. of Hoffman Rd, ca. 2.0 mi E of Concow Rd. Comment
  CAS-BOT-BC308151  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Near Cohasset 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
  CHSC38346  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-4-25 389 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.4 mi w of the power lines. 182 Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  UC179658  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte near Butte Meadows; Little Summit Comment
  UC725409  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 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
  SBBG8177  Eriophyllum lanatum var. integrifolium H. and M. Dearing 1938-6-21 2045 Butte 15 mi N of Chico Comment
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  CAS-BOT-BC41445  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC94582  Erythranthe cardinalis Lowell Ahart 2006-9-11 13311 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
  CHSC42866  Erythranthe filicifolia Lowell Ahart 1987-5-12 5634 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-BC153855  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 miles east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC40886  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte About 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  CHSC87424  Erythranthe glaucescens R. D. Fischer 2004-3-20 114 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along drainage on Guardian Trail. UTM: 10609595E 4405947N. 384 Comment
  CHSC90150  Erythranthe glaucescens J. Lund 1980-4-19 Butte On the trail leading up to the falls above Richardson Springs 2.0 mi east of Chico. 121 Comment
  OBI9412  Erythranthe glaucescens Lewis S. Rose 1967-5-8 67077 Butte 1 mi S of Pulga, North Fork Feather River 427 Comment
  SEINET14214297  Erythranthe glaucescens Harris, Reese 1963-4-16 s.n. Butte Chico. 122 Comment
  SEINET8391710  Erythranthe glaucescens Sean Marquis 1998-4-26 3 Butte 1/4 re mile w of Richardson Springs, next to road. 183 Comment
  CHSC113285  Erythranthe guttata Lowell Ahart 2014-5-13 19465 Butte Below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC44069  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC44679  Erythranthe microphylla R. Banchero 1980-5-23 161 Butte Along Nelson Bar Rd 1.0 mi SW of its jct with Lunt Rd. 432 Comment
  CHSC11895  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  CHSC10826  Erythronium multiscapideum Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC77455  Erythronium multiscapideum Laura Bogni 1997-4-5 26 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 670 Comment
  UC1731059  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town Comment
  CAS-BOT-BC504533  Erythronium multiscapideum Lowell Ahart 1972-3-22 s.n. Butte Along Swedes Flat Road, Bangor 1500 Comment
  RSA3783  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  CAS-BOT-BC402640  Eschscholzia caespitosa A. A. Heller 1938-4-23 15052 Butte Just west of the summit between the West Branch and the North Fork of the Feather River on Highway #24 Comment
  CAS-BOT-BC402962  Eschscholzia californica Lowell Ahart 1980-5-12 2262 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC3845  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, 300 yds. e of Longfellow Bridge, Chico. 27 Comment
  CHSC4634  Eschscholzia lobbii R. Carter 1966-4-21 357 Butte Found ca. 5 mi. NE of Oroville on top of Table Mt.; growing 3 yds off E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  CHSC48128  Eucephalus breweri Vernon H. Oswald 1987-7-13 3109 Butte Summit Lake on the N side of Snow Mt, ca. 4 mi (air) SE of Jonesville. 1901 Comment
  SEINET194884  Eunanus douglasii A. A. Heller 1938-1 15025 Butte On the treeless undulating plain of Table Mt. Comment
  SEINET10453755  Euphorbia crenulata Mary Susan Taylor 1980-5-8 Taylor 2615 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  UCD34285  Euphorbia hooveri Beecher Crampton 1978-8-21 9659 Butte Ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CHSC112933  Euphorbia oblongata B. Castro; Robin Carter, Sabrina Bell 2012-5-3 1917 Butte Sacramento Valley. Ca 1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.16 mi S of Tres Vias Rd and 0.8 mi S of Nelson Rd, ca 20 ft W of a stockpond. Along ditch beside E edge of informal dirt road in disturbed open grassland, ca 100 ft N of large oak tree. 43 Comment
  SEINET10453823  Euphorbia peplus Mary Susan Taylor 1975-4-6 Taylor 433 Butte Chico. 52 Comment
  SEINET10873987  Euphorbia serpillifolia Lowell Ahart 1984-8-19 Ahart 4785 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET12143834  Euphorbia serpillifolia Unknown 1984-1 4785 Butte W of Pacific Heights Road, ca 5 mi SW of Oroville 40 Comment
  CHSC49838  Euphorbia spathulata Vernon Oswald 1990-4-4 4151 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC60481  Euthamia occidentalis K. R. Stern 1972-9-19 3783 Butte Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  JEPS120023  Euthamia occidentalis Lowell Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS119859  Festuca arundinacea Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC278300  Festuca californica subsp. californica Lowell Ahart 1985-5-15 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  UCD18733  Festuca microstachys Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 26 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site, UTMs: 10S0624439; 4384482. Comment
  CHSC88159  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  CAS-BOT-BC278630  Festuca subulata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  UC1609519  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte about 6 (air) mi n.e. Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River, s. of Fall River) 1036 Comment
  UC1586629  Festuca subuliflora Lowell Ahart 1991-6-19 6660 Butte about 1.5 mi sw Forbestown Reservoir (along the s side of the dirt road that goes to the Forbestown Reservoir) 609 Comment
  CAS-BOT-BC77689  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  UC129375  Fragaria vesca Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UCD113236  Fragaria vesca L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  OBI2924  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Cyn; Pulga 488 Comment
  CAS-BOT-BC55648  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  CHSC34188  Frangula purshiana L. Ahart 1981-9-15 3175 Butte Along edge of road on w side of Sly Creek Reservoir, ca. 1/2 mi n of Sly Creek Dam. 1150 Comment
  CHSC50841  Frangula purshiana Vernon Oswald; Lowell Ahart 1990-7-19 4364 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. 1981 Comment
  CAS-BOT-BC53824  Frangula rubra A. A. Heller 1914-5-18 11404 Butte Between Chico and Forest Ranch, 14 miles from Chico. 731 Comment
  POM130462  Frasera albicaulis var. nitida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  RSA25677  Frasera albicaulis var. nitida Carl B. Wolf 1941-7-23 11053 Butte Northern Sierra Nevada, seven miles west of De Sabla on road to Forest Ranch. 762 Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  JEPS120066  Fraxinus profunda Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. Comment
  SEINET10469520  Fritillaria lanceolata Mary Susan Taylor 1975-3-3 Taylor 403 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CAS-BOT-BC130427  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  UC143417  Fritillaria pluriflora H. E. Brown Mar 3 1897-Mar 22 1897 141 Butte near Clear Creek 53 Comment
  CHSC2287  Fritillaria recurva R. M. Staley 1952-7-17 Butte Butte Creek. 365 Comment
  CAS-BOT-BC508143  Fritillaria recurva C. C., Mrs. Bruce 1897-4-1 2025 Butte Forest Ranch Comment
  SEINET10836847  Galium Mary Susan Taylor 1975-3-10 Taylor 405 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
  CHSC38655  Galium aparine Vernon Oswald 1983-3-13 162 Butte Upper Bidwell Park, Chico, along Yahi Trail between Salmon Hole and Parking area P (1.7 mi E of the power lines). 182 Comment
  POM193332  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  CHSC31421  Galium bolanderi L. Ahart 1980-9-10 2630 Butte Ca. 1 mi NE of Millsap Bar, ca. 25 mi NE of Oroville. 900 Comment
  JEPS121970  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  CHSC61008  Galium murale Lowell Ahart 1993-5-31 6956 Butte In Nature Garden, Durham Elementary School, Durham. 51 Comment
  CHSC82511  Galium parisiense Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9748 Butte On the south side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  RSA718331  Galium parisiense L. Ahart 2006-6-9 12651 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
  CHSC64216  Galium porrigens var. tenue Mike Carpenter 1990-3-30 13 Butte Ca. 450 ft. E of Forbes Town Rd. Ca. 1.1 mi S of the intersection of Hwy. 162 and Forbes Town Rd. 728 Comment
  UCD170497  Galium porrigens var. tenue D. O. Burge 2017-3-18 2231 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  RSA4162  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  UC1564793  Galium trifidum var. pusillum V. Oswald and L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House (ca 3.3 air mi se of Jonesville); Butte Creek 1767 Comment
  SEINET10500650  Galium triflorum Mary Susan Taylor 1978-7-19 Taylor 1740 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UCD159565  Gamochaeta ustulata D. S. Park 2011-6-24 302 Butte Growing on edges of Thermalito Afterbay. 43 Comment
  CAS-BOT-BC303382  Gamochaeta ustulata Lowell Ahart 1983-6-26 4152 Butte Along the edge of Ponderosa Way, about 1.5 miles SE of the E Fork of Canyon Creek, about 14.5 miles NE of Oroville 575 Comment
  CHSC65635  Garrya fremontii Deborah Simmons 1995-2-21 1 Butte On trail on the s side of Hwy 32 ca. 11.5 mi e of Chico on Hwy 32. 487 Comment
  UC1122681  Garrya fremontii J. E. Sowder 1933-6-28 97 Butte 1.5 mi e Keefer's Old Mill; Chico Quad. 274 Comment
  CHSC36709  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32, on roadside fill. Comment
  CHSC46456  Gayophytum humile V. Oswald; L. Ahart 1989-6-27 3818 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 1981 Comment
  CHSC30078  Gayophytum racemosum R. A. Schlising 1980-7-16 3913 Butte Margins of Butte Creek NE of Butte Meadows, SW of Cherry Hill Campground. 1402 Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  UC463036  Gentiana newberryi E. B. Copeland 1931-7-21 Butte Jonesville 1500 Comment
  CHSC26851  Geum macrophyllum M. S. Taylor; M. Hayes 1978-6-24 1639 Butte On Ernies Island, at jct with Old Humboldt Rd and Butte Creek, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CAS-BOT-BC459402  Geum macrophyllum Lowell Ahart 1980-6-20 2416 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  CHSC41375  Gilia capitata subsp. mediomontana R. A. Schlising; S. Morey 1982-8-31 4382 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  SEINET10496752  Gilia leptalea Mary Susan Taylor 1975-8-31 Taylor 883 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
  CHSC28914  Gilia tricolor M. S. Taylor 1980-3-1 2350 Butte On bluffs overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CDA40020  Gilia tricolor T. C. Fuller 1958-4-15 3807 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC5972  Ginkgo biloba M. MacArthur 1968-6-17 209 Butte Ca. 40 ft. N of Big Chico Creek and 40 ft. from path to bridge N of Dining Hall, Chico State College Campus. 60 Comment
  CAS-BOT-BC266564  Githopsis pulchella Peter H. Raven 1953-5-9 5437 Butte 1.2 miles from Bangor on Oroville Road Comment
  CAS-BOT-BC266592  Githopsis pulchella Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC78135  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  SEINET10464572  Githopsis specularioides A. Arthur Heller 1915-4-20 Heller 11853 Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  CHSC83085  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle 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
  CHSC97694  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
  CHSC61541  Glyceria elata Lowell Ahart 1993-7-6 7050 Butte In a meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET10473435  Gnaphalium Mary Susan Taylor 1977-11-12 Taylor 1536 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CDA6042  Gnaphalium luteoalbum G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4367 Butte Rice Experiment Station, 3 miles north of Biggs on Highway 162. 0 Comment
  JEPS117221  Gratiola ebracteata Lowell Ahart 2010-5-16 16686 Butte On the bottom and sides of drainages and vernal pools, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  RSA256646  Gratiola ebracteata R. A. Vanbianchi 1974-4-20 208 Butte Paradise Skyway, 1 mile east of U.S. Highway 99. Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  UC1876147  Grindelia hirsutula T. A. Ranker and P. G. Trapp 1994-6-17 1625 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 min topographic map). 396 Comment
  RSA272553  Grindelia nana Porter P. Lowry II 1977-7-5 810 Butte 0.25 mile S of Grand View Cafe on State Hwy 70. Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CHSC5942  Hedera helix M. MacArthur 1968-6-17 176 Butte SW edge of Big Chico Creek, NE of Dining Hall, Chico State College campus. 60 Comment
  CHSC37827  Hedypnois cretica R. A. Schlising 1980-5-23 3595 Butte N of Lake Oroville, along Nelson Bar Road, 1.0 mi w of jct with Lunt Road, and 1.8 mi total w of jct Lunt Road and Highway 70. Pasture. Comment
  CHSC46332  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC41317  Helenium bigelovii S. C. Morey 1983-7-23 596 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC600736  Helenium bigelovii H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  CHSC354  Helianthus californicus E. Walker 1932-7-20 Butte Durham. 57 Comment
  CAS-BOT-BC134034  Heliotropium M. S. Taylor 1975-10-3 943 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico 36 Comment
  CHSC33215  Heliotropium curassavicum R. E. Preston 1981-6-19 98 Butte Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. At side of road near edge of water, on levee, ca. 100 m w of Headquarters. 20 Comment
  CDA5608  Heliotropium europaeum L. Ahart, Vernon Oswald 1999-8-13 8163 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
  CHSC357  Hemizonia congesta subsp. luzulifolia V. Holt 1944-9-15 Butte Near Chico. 57 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
  SEINET10475207  Hemizonia fitchii Mary Susan Taylor 1980-8-15 Taylor 3250 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  JEPS114968  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2008-5-21 14772 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the P 246 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
  CHSC111117  Herniaria hirsuta var. hirsuta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18070 Butte On the west side of the poor road (horse trail), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, lower Bidwell Park, Chico. 76 Comment
  JEPS124002  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC310133  Hesperevax acaulis Lowell Ahart 1979-4-17 s.n. Butte 2 miles north-west of Bangor. Hill-side ca. 1/4 mile north of Avacado Ave. 150 Comment
  CAS-BOT-BC310156  Hesperevax caulescens Peter H. Raven 1963-5-8 18363 Butte On State Highway 32, 5 miles west of Chico Comment
  CHSC46922  Hesperevax caulescens Lowell Ahart 1962-5-11 7 Butte Open pasture fields, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC75250  Hesperevax caulescens Jennifer Slater 1997-4-27 35 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 60 Comment
  SD40646  Hesperocyparis macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Butte Sierra Nevada Foothills, at Magalia 700 Comment
  CAS-BOT-BC175993  Hesperolinon californicum H. E. Brown 1897-5-1 214 Butte Near Clear Creek Comment
  CAS-BOT-BC175994  Hesperolinon californicum A. A. Heller; H. E. Brown 1902-5-8 5504 Butte Berry Canyon (near Clear Creek) Comment
  CHSC11042  Hesperolinon californicum Lowell Ahart 1968-5-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66953  Hesperolinon californicum James D. Jokerst 1992-5-19 3360 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. 97 Comment
  UC478502  Hesperolinon micranthum E. B. Copeland 1931-7-12 656 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  UCD139991  Heteranthera limosa Lowell Ahart 1974-4-29 618 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA17304  Heteranthera rotundifolia G. F. Hrusa, P. Kerr, S. Winterton 2004-6-25 16353 Butte Central Valley; Rice field edge along Hwy 162 E of Butte City. 15 Comment
  CHSC116746  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC42724  Heterocodon rariflorum Lowell Ahart 1987-5-12 5652 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC897754  Heterocodon rariflorum A. A. Heller 1914-7-23 11616 Butte Chico Meadows 1219 Comment
  CHSC45193  Heteromeles arbutifolia Lowell Ahart 1975-11-13 994 Butte Near the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC66851  Heterotheca oregona var. compacta Vernon H. Oswald 1996-9-30 8289 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. On the W side of the farm road between Camp 2 East and Camp 2 West in The Nature Conservancy easement area, near the Riparian Sanctuary. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  JEPS115602  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 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
  SD5139  Hieracium albiflorum E. B. Copeland 1930-7-16 Butte Jonesville. 1600 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC62107  Hoita orbicularis L. P. Janeway 1993-7-2 4425 Butte Plumas National Forest. Open serpentine area above Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swanye Hill to Big Bar Mtn). 926 Comment
  CHSC44874  Holocarpha virgata Lowell Ahart 1979-9-25 2021 Butte About 1/2 mile east of Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC34043  Holodiscus discolor L. Ahart 1981-7-7 2931 Butte Near a small dry stream, near the dirt rd to the Forbestown Reservoir, 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CAS-BOT-BC150114  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville 2000 Comment
  CAS-BOT-BC311883  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte Mt. Ida Ranch, 10 miles east of Oroville Comment
  UCD135731  Holozonia filipes Bruce G. Baldwin; Gerald D. Carr, Lowell Ahart 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch. Comment
  CHSC6751  Hordeum marinum subsp. gussoneanum Marilyn Lee 1968-5-3 159 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  HSC91100  Hordeum marinum subsp. gussoneanum J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CHSC4401  Hordeum vulgare R. Jaegel 1966-5-16 Butte N entrance to Bidwell Park, 3 mi ne of Chico. Comment
  CAS-BOT-BC536587  Horkelia californica var. elata John Thomas Howell 1975-7-21 51334 Butte Sierra Nevada. North Branch Feather River 304 Comment
  CHSC48849  Horkelia fusca subsp. parviflora Vernon Oswald 1985-7-2 1882 Butte Skyway (Bull Hill Rd.) at Coon Creek, 5.5 mi se of Butte Meadows. On bank of creek in a meadow. 1554 Comment
  CAS-BOT-BC143973  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  UCD113553  Horkelia tridentata L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCD113566  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte Yellow Pine Forest in openings on edge of Little Bald Rock near creek, ca. 3 mi S of Brush Creek. 1016 Comment
  CHSC1557  Horkelia tridentata subsp. flavescens M. Davidson 1929-5-2 Butte Paradise. 609 Comment
  CHSC74089  Hosackia oblongifolia var. oblongifolia B. Castro; E. Hubert 1996-7-16 684 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on S-facing slope of recently burned area. 1188 Comment
  JEPS66842  Hypericum anagalloides W. L. Jepson 1937-8-17 19463 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
  JEPS113169  Hypericum concinnum Lowell Ahart 2007-5-29 13925 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. Comment
  CHSC94999  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CHSC37395  Hypericum perforatum R. A. Schlising 1980-8-31 3972 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
  CAS-BOT-BC401332  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  SEINET10872150  Hypochaeris glabra Mary Susan Taylor 1980-5-27 Taylor 2682 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
  CHSC43957  Hypochaeris radicata Vernon Oswald 1988-6-2 3353 Butte Hwy 32, 10.5 mi (odometer) n of Forest Ranch. 1036 Comment
  UCD80076  Hypochaeris radicata CNPS SN Foothill Team 2005-4-15 SNFN 0082 b Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence). 81 Comment
  CAS-BOT-BC133559  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 Alt., 18 mi. NE. from Oroville 701 Comment
  SEINET12046587  Iris hartwegii Unknown 1977-1 45 Butte ca 3 ft. to E side of Vilas Rd. and 0.3 mi NE of jct of Cohasset Hwy and Vilas Rd., Cohasset 945 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  CHSC39547  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC81194  Isoetes howellii J. Trizzino 2001-4-25 58 Butte Oro-Chico Highway, 0.25 mi west of Neal Road, wet ditch on north side of road. 54 Comment
  CAS-BOT-BC69948  Isoetes howellii Lowell Ahart 1974-5-30 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  SBBG128804  Isoetes howellii L. Ahart 2013-5-22 18703 Butte ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut 54 Comment
  CHSC116645  Isoetes nuttallii Lowell Ahart 2016-4-15 f 20743 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  SD116543  Isoetes nuttallii Barbara Ertter, Jeff Strachan, Lowell Ahart 1980-5-7 3289 Butte Peter Ahart Ranch ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfields near ponds 29 Comment
  CHSC48180  Jensia rammii Vernon Oswald 1988-5-17 3310 Butte Forbestown Rd. 2.2 mi e of Oroville-Quincy Hwy (Hwy 162). Along the edge of the road. 426 Comment
  JEPS114387  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  HSC68033  Juglans nigra J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  UC1594712  Juncus acuminatus Lowell Ahart 1992-7-23 6827 Butte about 2 mi w of Oroville Dam (near Longs Bar Monument, on n side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC56894  Juncus articulatus L. P. Janeway; C. A. Janeway 1986-10-12 1922 Butte North side North Fork Feather River at Pulga. Between river and railroad grade. 426 Comment
  SEINET10872268  Juncus brachyphyllus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4135 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS98295  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, 3 air mi E of Madrone Lake, 12 air mi NE of Oroville 993 Comment
  JEPS98590  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  RSA0118937  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC69727  Juncus bufonius var. occidentalis Lowell Ahart 1997-10-24 7935 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, stand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC55454  Juncus capitatus L. P. Janeway 1991-4-12 3893 Butte 1 1/4 mi east of Palermo-Honcut Road, ca 3 mi north of Honcut. 45 Comment
  CHSC112461  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC49610  Juncus dubius Vernon Oswald 1987-6-23 3015 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a wet ditch beside the road. 1920 Comment
  CHSC108323  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1225 Comment
  CHSC113432  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-7 19581 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  UC1562358  Juncus hemiendytus var. hemiendytus Lowell Ahart and Vern Oswald 1990-7-5 6550 a Butte 2 mi nw Snag Lake (about 0.5 mi n of Butte Creek House) 1828 Comment
  CHSC94400  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS122148  Juncus howellii Lowell Ahart 2014-8-13 19705 Butte About 110 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CDA39192  Juncus howellii T. C. Fuller 1962-7-12 9200 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET10472445  Juncus howellii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4749 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CHSC94255  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
  JEPS118349  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  JEPS94188  Juncus leiospermus Lowell Ahart 1998-4-29 7953 Butte ca. 7 mi. n. Oroville (n.e. of the large parking area on North Table Mt., e. side of Cherokee Rd.); North Table Mt. 426 Comment
  CAS-BOT-BC110102  Juncus leiospermus var. ahartii Lowell Ahart 1978-3-26 1620 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10613917 Image available Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 Ahart 3402 Butte Peter Ahart Ranch, ca 2 miles north and 1/2 mile east of Honcut, between Marysville and Oroville, wet bare soil around the edges of a large vernal pool in one of the farmed fields, Valley Grassland. 50 Comment
  CAS-BOT-BC110138  Juncus leiospermus var. leiospermus Lowell Ahart 1979-4-30 1854 Butte 7 miles north of Oroville. On the top of Table Mountain. 400 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC49628  Juncus occidentalis Vernon Oswald 1984-7-31 1635 Butte Scotts John Creek, 0.9 mi n of 26N27. Near the creek. 1786 Comment
  CHSC78340  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte East side of Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS113857  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  JEPS113860  Juncus tenuis Lowell Ahart 2007-7-11 14293 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  JEPS114892  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 975 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
  CHSC100342  Juncus trilocularis Lowell Ahart 2008-7-9 15069 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 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
  RSA293236  Keckiella breviflora subsp. glabrisepala D. C. Michener 1980-8-4 3777 Butte Northern Sierra Nevada. Feather River Canyon, 4.4 miles north of Pulga on CA 70. 500 Comment
  CHSC44721  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-5 196 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  RSA0111938  Keckiella breviflora var. glabrisepala Lowell A. Ahart 2015-5-5 20143 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. 40 Comment
  CHSC61334  Keckiella lemmonii Lowell Ahart 1993-8-8 7152 Butte On the west branch of Pinkard Creek, about 1 3/4 miles north-west of the Sly Creek Dam. 1097 Comment
  SEINET12765113  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table mountain, about 8 miles (air) northeast of Stirling City.; 0 1372 Comment
  UC102430  Kelloggia galioides Mrs. R. M. Austin Jul 1896 695 Butte Colby Comment
  SEINET10869775  Kelloggia galioides Mary Susan Taylor 1978-7-18 Taylor 1678 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
  JEPS115352  Kickxia elatine Lowell Ahart 2009-7-3 15991 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  CDA2213  Koeleria gerardi Sterling O. Mattoon 1971-4-27 Butte 6.9 miles east of Chico. 0 Comment
  CHSC42372  Koeleria phleoides Lowell Ahart 1987-5-6 5557 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-BC340327  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  CHSC96358  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte Sacramento Valley. 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilataum, 282 Chico Rd, Oroville. Comment
  CAS-BOT-BC274279  Lachnagrostis filiformis Lowell Ahart 1986-11-14 5468 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
  CHSC26747  Lactuca saligna M. S. Taylor; M. Hayes 1977-8-16 1443 Butte Around maintance buildings, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  JEPS120015  Lactuca saligna Lowell Ahart 2012-10-28 18518 Butte South of the paved park road, about 30 yards east of the restrooms and bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA7509  Lactuca saligna T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  UC828870  Lagophylla glandulosa A. A. Heller 1914-5-14 11401 Butte treeless plain near Clear Creek Comment
  CAS-BOT-BC341295  Lagophylla glandulosa J. D. Jokerst; M. S. Taylor 1979-10-13 0397 Butte Jordan Hill Rd. (Ponderosa Way), 2.25 mi E. of North Fork of Feather River 853 Comment
  CAS-BOT-BC341313  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  SEINET10971180  Lagophylla glandulosa Mary Susan Taylor 1980-8-30 Taylor 3322 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  SFV4000  Lagophylla glandulosa M. L. Vincent 1962-9-13 286 Butte One mile west of Paradise on Honeyrun Road. Comment
  CHSC749  Lamium amplexicaule R. Carter 1964-3-17 48 Butte 7 mi E of Oroville, 250 yds. up Wakefield Dr. off Feathervale on S side rd. 121 Comment
  CHSC82103  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the west edge of the Midway, about 1 mile north of Richvale. 30 Comment
  UCD125078  Lamium amplexicaule K. Esau; M. Phillips 1929-4-13 1922 Butte Chico. Comment
  RSA20875  Lasthenia californica C. B. Wolf 1937-3-29 8336 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  SJSU11864  Lasthenia californica subsp. californica J. B. Willis Jr. 1969-5-3 96 Butte by Cherokee Rd 8 mi NE of Oroville Comment
  CHSC112890  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  CHSC8123  Lasthenia fremontii J. G. Moore 1969-3-25 68 Butte Upper Bidwell Park, 200 yds. w of rifle range, 100 yds. n of golf course. Chico. 76 Comment
  UCSC004635  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte T20N, R3E, northeast 1/4 Section 24, south of a small stream, open pasture field, a bout 1 mile south of Beatson Hollow, about 1.5 miles southwest of the poor dirt road off Cherokee Road, south part of North Table Mountain, about 7 milse (air) north of Oroville 281 Comment
  HSC66353  Lasthenia fremontii M. S. Taylor 1980-3-28 2400 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 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
  RSA715476  Lasthenia glaberrima L. Ahart 2005-5-14 11810 Butte Peter Ahart Ranch, about 2 miles N and 0.25 mile E of Honcut, about 12 miles (air) SE of Oroville. 26 Comment
  CAS-BOT-BC353438  Lasthenia glabrata subsp. glabrata A. A. Heller 1914-5-13 11394 Butte Along Butte Creek between Durham and Nelson 53 Comment
  JEPS117244  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 air miles northeast of Oroville 264 Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  UCD106383  Lathyrus nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  CDA14068  Lathyrus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13716 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  SD2670  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville, in low woods in shade & sun 1500 Comment
  JEPS113267  Lathyrus sphaericus Lowell Ahart 2007-4-30 13698 Butte On both side of Jordan Hill Road, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CAS-BOT-BC213285  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC213292  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  UCR88860  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte S of Forbestown Ditch, c. 2.5 mi NE of Forbestown 869 Comment
  CHSC112435  Lavatera cretica Lowell Ahart 2013-5-21 18702 Butte Waste area along fence, on the west side of Highway 99E, 30 yards north of W. Rio Bonito Road, about 1 mile northeast of Biggs. 31 Comment
  CHSC60655  Layia chrysanthemoides Vernon H. Oswald 1993-4-11 5255 Butte Hwy. 99 between Broyles Rd. and the Tehama County line in the N part of the county. Bordering the highway. 60 Comment
  CHSC101986  Layia fremontii Richard A. Nichols 1980-8-18 1 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  CHSC2924  Layia fremontii W . Fitzwater 1958-3-15 Butte Shasta Hwy., Chico area. Comment
  CHSC30389  Layia fremontii J. D. Jokerst 1980-4-17 600 Butte Top of North Table Mt. 419 Comment
  CHSC6688  Layia fremontii Marilyn Lee 1968-3-15 120 Butte Along W. side of road leading to missle base, intersection on Kietter Road. Comment
  RSA682150  Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  JEPS94431  Leontodon saxatilis subsp. longirostris Lowell Ahart 1997-10-20 7923 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork of the Feather River 914 Comment
  CHSC23141  Lepechinia calycina M. S. Taylor 1976-2-25 1003 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  CHSC50653  Lepidium didymum Lowell Ahart 1990-5-28 6501 Butte Along the edges of Palm Avenue, about 1/12 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 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
  CHSC34532  Lepidium nitidum R. E. Preston 1982-2-18 170 Butte Slope above s bank of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 182 Comment
  CAS-BOT-BC89882  Lepidium nitidum Lowell Ahart 1980-3-11 2039 Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC103658  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC92547  Lepidium nitidum var. nitidum L. P. Janeway 2005-3-10 8348 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC40530  Lepidium perfoliatum Lowell Ahart 1985-4-1 4874 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
  CHSC57221  Lepidium strictum Vernon H. Oswald; Lowell Ahart 1992-3-24 4886 Butte Near Oroville at the junction of Burma and Cherokee roads, Lake Oroville Recreation Area on the west side of Thermalito Diversion Pool. In parking area located here. 74 Comment
  JEPS94959  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte 1.5 mi n Bridge across West Branch of Lake Oroville (w side Hwy 70, just n of Rich Gulch Rd) 396 Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66176  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7662 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 S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC36821  Leptosiphon bolanderi M. S. Taylor 1981-5-21 3777 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC69682  Leptosiphon bolanderi Vernon Oswald 1986-4-29 1990 Butte Rim Rd. (Ponderosa Way) 3.6 mi n of Jarbo Gap and Hwy 70. 853 Comment
  SJSU8718  Leptosiphon filipes J. B. Willis Jr. 1969-5-3 91 Butte near Cherokee Rd 7.5 mi NE of Oroville Comment
  CHSC62776  Leptosiphon parviflorus L. P. Janeway 1993-5-2 4340 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  CHSC38375  Lessingia nana Vernon Oswald 1983-8-2 948 Butte Upper Bidwell Park, Chico, near Parking Area C, Horseshoe Lake. 100 Comment
  SD62438  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  SEINET10474776  Lessingia nana Mary Susan Taylor 1980-7-6 Taylor 3059 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  RSA79046  Lessingia nemaclada E. K. Balls, Percy C. Everett 1952-10-14 18215 Butte 2.4 miles southwest of Butte-Plumas county line on Highway 24 274 Comment
  CHSC43877  Leucothoe davisiae L. P. Janeway 1987-6-27 2361 Butte E slope of Bald Mtn, along the Concow Road. 1694 Comment
  CHSC44110  Lewisia kelloggii subsp. hutchisonii L. P. Janeway; R. A. Schlising 1988-7-22 3047 Butte Area of saddle between Coon Hollow and Chips Cr. Near jeep trail. 1920 Comment
  SEINET10454481  Ligusticum Mary Susan Taylor 1976-4-27 Taylor 1090 Butte Abundant on N side of Villas Rd, ca. 0.5 mi E of junction of Villas Rd and Cohas set Hwy, Cohasset. Yellow Pine Forest with Calochortus monophyllus. 762 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  POM182757  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  UC1609426  Limnanthes alba subsp. alba Lowell Ahart 1993-5-17 6951 Butte about 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC35708  Limnanthes alba subsp. versicolor J. D. Jokerst 1982-5-19 1576 Butte Top of Lumpkin Ridge 2 mi E of Camp 18, at the S edge of the ridge. 1280 Comment
  UCSB63634  Limnanthes douglasii O'Connor-Henry, K. 1985-4-19 Butte North Table Mtn., ca. 500 yd. w of Cherokee Rd. and 4.5 mi. n of Oroville 365 Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  JEPS43472  Limnanthes douglasii subsp. rosea Joan O. Danielson 1966-4-6 16 Butte Cherokee Rd 5 mi s Cherokee 609 Comment
  RSA33078  Limnanthes douglasii subsp. rosea A. A. Heller 1938-4-14 s.n. Butte Flat, treeless summit of Table Mountain north of Oroville. Upper Sonoran Life Zone. 305 Comment
  SFV2130  Limnanthes douglasii subsp. rosea M. L. Vincent 1962-4-17 203 Butte Sierra Nevada Cherokee Road near Table Mountain. Comment
  CAS-BOT-BC45930  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 miles north of Oroville Comment
  CHSC102547  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-17 Butte Northern Sacramento Valley. Located north of Keefer Road and west of Hagenridge Road. 93 Comment
  CHSC67551  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3044 Butte Cohasset population E and adjacent to Cohasset Rd. ca. even with N end of Chico Municipal Airport runway. Comment
  CHSC50688  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC80561  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte On the bottom of one of the large holding ponds, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS120655  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC31874  Limosella aquatica L. Ahart 1978-4-2 1624 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42871  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10496787  Linanthus bicolor Mary Susan Taylor 1980-3-28 Taylor 2402 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
  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
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 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
  JEPS117685  Linanthus harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC92457  Linaria dalmatica subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area on the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  JEPS104373  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS118008  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC31954  Lipocarpha aristulata J. D. Jokerst; R. A. Schlising 1980-7-2 926 Butte Adjacent to Garland Rd. 1.3 mi SE of Hwy 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC85004  Lipocarpha micrantha L. P. Janeway 2003-9-3 7974 Butte Northern High Sierra Nevada. A little below high water line on north side of South Fork Feather River arm of Lake Oroville, about 35 m west of the Enterprise Boat Ramp, about 1.6 km west-northwest of the north end of Enterprise Bridge. 268 Comment
  JEPS120828  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  SEINET10477991  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1980-5-27 Taylor 2642 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
  CHSC35994  Lithophragma bolanderi J. D. Jokerst 1982-5-19 1577 Butte Southern edge of Lumkin Ridge. 1280 Comment
  SJSU5717  Lithophragma parviflorum var. trifoliatum T. C. DeWitt 1971-4-2 Butte Humboldt Rd, 1 mi S of intersection with Hwy 32 304 Comment
  CAS-BOT-BC317345  Lithospermum californicum Lowell Ahart 1982-5-8 4090 Butte Along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville. Section 31. 450 Comment
  SEINET10497327  Lithospermum californicum Mary Susan Taylor 1981-4-27 Taylor 3556 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC26786  Logfia gallica M. S. Taylor 1978-5-6 1623 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  UC171399  Logfia gallica A. A. Heller 1913-10-7 11148 Butte 8 mi n Oroville; Table Mountain Olive Ranch 121 Comment
  SEINET241452 Image available Lolium multiflorum A. A. Heller 11420 Butte 8 miles north of Oroville 2 Comment
  SEINET10894235  Lolium multiflorum Moyer 1972-4-9 MOYER 172 Butte In Chico. Sacramento Avenue, across from sportshop. Plants of CSUC Campus. 61 Comment
  CAS-BOT-BC271176  Lolium temulentum John Thomas Howell 1976-4-1 51519 Butte Table Mountain 4 to 5 miles north of Oroville, Sierra Nevada 152 Comment
  CAS-BOT-BC271206  Lolium temulentum Lowell Ahart 1980-5-10 2230 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC29370  Lomatium caruifolium var. denticulatum Robert Schlising 1979-4-21 3371 Butte Richvale vernal pools, 1/4 mi s of jct Hwy 162 (e to Oroville ) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC4048  Lomatium dasycarpum subsp. tomentosum Ann Dolder 1967-4-26 Butte Ca. 1000 yards e of Salmon hole near rock cliff, Bidwell Park, Chico. 76 Comment
  SEINET10454504  Lomatium marginatum Lowell Ahart 1985-5-15 Ahart 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC29759  Lomatium utriculatum J. D. Jokerst 1980-4-21 631 Butte Top of North Table Mt., ca. 1.0 mi N of Cherokee Rd., at water falls of North branch of Coal Cr. 381 Comment
  CHSC38740  Lomatium utriculatum Vernon Oswald 1983-3-7 131 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at about the level of Alligator Hole (0.15 mi w of the power lines). 128 Comment
  CAS-BOT-BC241399  Lonicera John Thomas Howell 1955-6-15 30484 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC116577  Lonicera hispidula L. P. Janeway 2015-6-17 11780 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road 0.15 km north of Ponderosa Way; 0.7 air-kim west-southwest of Sunset Hill. West-facing slope above the road. 815 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
  SEINET5626938 Image available Lonicera interrupta A. A. Heller, H. E. Brown. 1902-1 2805 (C.W. Fallass). Butte Berry Canyon, near Clear Creek Comment
  CHSC58898  Lonicera involucrata var. involucrata Lowell Ahart 1992-7-26 6839 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC20532  Lonicera japonica Pamela Caldwell 1972-5-7 Butte N entrance of L.S. Bridge CSUC. Comment
  SEINET11263890  Lotus argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Yellow Pine Forest. T21N, R6E, SE 1/4 Section 30. Big Bald Rock, about 3 air miles E of Madrone Lake, about 12 air miles NE of Oroville.; 0 994 Comment
  CDA13829  Lotus corniculatus G. F. Hrusa, T. D. Wilfred 1996-9-5 13557 Butte Butte Basin; Bank of Butte Creek immed. below Western Canal District Dam. Comment
  CHSC52339  Lotus corniculatus Pauleen Broyles 1987-5-21 1044 Butte The Nature Conservancy Vina Plains Preserve. Abundant on N bank of Pine Creek. Comment
  RSA253373  Lotus grandiflorus var. macranthus A. A. Heller 1938-5-28 15125 Butte On the Feather River Highway 25 miles from Oroville. Comment
  JEPS98532  Lotus purshianus var. purshianus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS115647  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SD58289  Ludwigia palustris W. L. Jepson 1939-8-17 19457 Butte Feather River bottom, near Oroville, 46 Comment
  UCD107092  Ludwigia palustris P. B. Kennedy 9-10 Aug 1921 s.n. Butte Experiment Station, Biggs. Comment
  RSA516784  Ludwigia palustris var. pacifica L. Ahart 1980-9-8 2593 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35656  Lunaria annua R. E. Preston 1982-4-20 243 Butte N bank of Chico Creek, ca. 100 yds w of Warner St bridge, Chico. Comment
  RSA712825  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards SE of the Concow Grange building, on the W side of Big Bend Road, about 1.25 miles (air) S of Jarbo Gap. 549 Comment
  CHSC97355  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610536E 4412518N. 292 Comment
  JEPS100189  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Edge of road 292 Comment
  JEPS50784  Lupinus albicaulis Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9278 Butte abut 1 mi NE of Jarbo Gap (along Feather River Hwy. (now Calif. 70)) 640 Comment
  CHSC55698  Lupinus albifrons Ben Cunningham 1991-4-20 Butte Ca. .7 mi s of Lunt road and 4 ft e of Highway 70, 65 mi s of Greenville. 457 Comment
  SEINET10452024  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23N R5E nw sec 18, Pulga SW quad. E side of Rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi ne of Magalia. Yellow Pine Forest, on granite soils; 3900 ft. 1189 Comment
  CHSC90190  Lupinus bicolor Jody Henderson 1989-4-25 5 Butte 100 yds. n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds. s of Kilkare Ln. 72 Comment
  UCD107237  Lupinus bicolor A. A. Heller 1919-4-18 13109 Butte Canon of Mud creek above Richardson Springs. Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  SEINET10484922  Lupinus bicolor subsp. tridentatus Mcbride 1981-4-18 MCBRIDE 1 Butte Small population, 1.5 km e of chico and 1 km n of little chico creek. Open Area within transitional zone between valley loland and foothills. 90 Comment
  CHSC54367  Lupinus bicolor var. tridentatus M. Bailey 1991-3-30 556 Butte Butte College campus, n side of hill directly ne of water tower, distance ca 1/4 mi. 176 Comment
  SEINET10452071  Lupinus densiflorus Mary Susan Taylor 1976-4-27 Taylor 1097 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
  SEINET11071881 Image available Lupinus densiflorus var. palustris J. A. Sheldahl 1968-4-20 30 Butte Table Mountain, Oroville 335 Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  SEINET10490331  Lupinus grayi Taylor 1978-7-19 Taylor 1783 Butte On e side of upper scotts john road, about 2 mi n of its junction with scotts John road, about 6 mi ne of jonesville. 1890 Comment
  SEINET10871252  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4721 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UC398927  Lupinus lepidus var. sellulus E. B. Copeland 1929-7-17 377 Butte above Jonestown; above Jonestown 2000 Comment
  CHSC101153  Lupinus microcarpus var. densiflorus Lowell Ahart 2009-5-15 15703 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. 234 Comment
  CHSC917  Lupinus microcarpus var. microcarpus D. Crummett 1937-6-2 Butte Sandy Gulch near Chico. 57 Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  UCD108927  Lupinus nanus Rimo Bacigalupi; Robbins, Chisaki 1956-4-19 5609 Butte along rd. to Oroville from Cherokee, at top of descent into North Fork of Feather River Canyon, 3.5 miles n. of Cherokee. 396 Comment
  CHSC31110  Lupinus polycarpus Roberta A. Boer 1980-4-13 3 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  RSA755354  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. 198 Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10490269  Lupinus superbus var. elongatus Edwin B. Copel 1930-7-11 Copeland s.n. Butte Jonesville. Abundant in and about springs. This matches heller's type Collection of l. Elongatus greene very perfectly. It is somewhat less hairy Than the type collection of l. Superbus. The leaflets of the larger leaves are Commonly nine; if there were ten, it would be l. Polyphyllus lindl., As Sometimes found in california. 1500 Comment
  POM24038  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-05 2034 Butte Butte Creek. Comment
  SBBG128104  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte W edge of a 10 acre meadow, ca. 50 yards E of the poor dirt rd, ca. 20 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  JEPS110339  Luzula comosa var. laxa Lowell Ahart 2006-7-16 12970 Butte In the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC441209  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 4091 Butte About 2 mi. E of Bidwell Bar Bridge Comment
  CHSC28000  Lychnis coronaria M. S. Taylor 1978-7-21 1821 Butte On s side of Oroville-Quincy Hwy along creek, ca. 14 mi n of Lake Madrone. 1463 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
  CDA42943  Lycopus americanus L. Ahart 2012-10-2 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC21048  Lycopus americanus M. S. Taylor 1975-10-3 934 Butte Ca. 1/4 mi n of the washout on the Sacramento River, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC94609  Lycopus americanus Lowell Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC28472  Lythrum hyssopifolia R. A. Schlising 1979-5-30 3428 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
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  JEPS95946  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UC1586543  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  JEPS40334  Madia elegans H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  CAS-BOT-BC342713  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC342714  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  SFV10347  Madia elegans M. L. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. 300 Comment
  CHSC26643  Madia elegans subsp. densifolia M. S. Taylor 1977-11-12 1541 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  RSA755649  Madia elegans subsp. vernalis L. Ahart 2009-5-23 15726 Butte About 60 yards northwest of Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile west of Highway 32, about 10 miles northeast of Chico. 268 Comment
  CHSC32149  Madia exigua L. Ahart 1979-5-29 1904 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek; ca. 2.5 mi se of Paradise. 500 Comment
  RSA169436  Madia exigua L. S. Rose 1963-6-2 63069 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  SEINET10871971  Madia exigua Lowell Ahart 1985-5-15 Ahart 4986 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CAS-BOT-BC334653  Madia glomerata A. A. Heller 1914-8-8 s.n. Butte Jonesville 1524 Comment
  SBBG28509  Madia gracilis E. B. Copeland 1931-8-14 Butte Jonesville 1500 Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 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
  SEINET10872066  Madia rammii Lowell Ahart 1985-5-6 Ahart 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  JEPS120034  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. Comment
  CAS-BOT-BC510731  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville, at the Summit 640 Comment
  CHSC63975  Maianthemum stellatum B. Castro; L. Gehrung 1994-5-18 512 Butte On Watson Ridge, ca 50 ft below USFS Rd 21N25. 1152 Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CHSC44376  Malacothrix floccifera Lowell Ahart 1988-6-21 6050 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap/ 271 Comment
  CAS-BOT-BC347375  Malacothrix floccifera L. P. Janeway; Perrie Cobb; Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest, Oroville Ranger District. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  UC481093  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Butte Comment
  JEPS88407  Malvella leprosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8094 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. (n.e. c); Sacamento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90011  Marah watsonii Ross Rowland 2001-4-2 29 Butte At the end of Billie Trail, about 10 ft above park bench, in Billie Park, Paradise. 617280mE/4403340mN/zone 10N. 530 Comment
  CHSC52225  Marrubium vulgare L. P. Janeway 1988-5-19 2673 Butte Along Cohasset Rd near the Anderson Mill Site; near the county line. 1133 Comment
  CHSC54509  Marsilea oligospora Vernon H. Oswald; Lowell Ahart 1991-8-19 4837 Butte Northwest lake in a cluster of three mapped lakes on the north side of Forest Rd. 25N15, between Philbrook Reservoir and Coon Hollow. 1767 Comment
  SEINET10530352  Marsilea vestita Mary Susan Taylor 1980-6-29 Taylor 2989 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC3343  Maytenus boaria Robert L. Smith 1966-3-1 11 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC29116  Meconella californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2459 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC42163  Meconella californica S. K. Fukuyama 1986-3-18 2 Butte 150 ft s of Butte Creek, ca 300 yds w of Covered Bridge, 6.3 mi ese of Chico. 118 Comment
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  SEINET12155164  Medicago hispida P. L. Ricker 1912-1 3969 Butte Chico 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
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CDA38818  Medicago praecox L. Ahart 2012-4-9 17836 Butte Around the edged of a small vernal pool, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC90815  Medicago praecox Lowell Ahart 2005-5-2 11779 A 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
  CHSC116524  Melia azedarach B. Castro 2013-4-25 1993 Butte Sacramento Valley. Just N of Chico, on W edge of Hwy 99 ca 150 ft N of its jcn with Wilson Landing Rd. 54 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  JEPS110273  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west 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-BC269390  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia 731 Comment
  CHSC101768  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC42439  Melica californica Lowell Ahart 1987-5-9 5582 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
  CHSC8255  Melica californica Dave Isle 1969-4-10 295 Butte In meadow above the N. shore of Horseshoe Lake in Upper Bidwell Park E. of Chico. 59 Comment
  CDA14056  Melica californica var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13703 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC282050  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CHSC110453  Melica harfordii L. P. Janeway 2013-5-20 11112 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  CHSC41166  Melica harfordii L. P. Janeway; Gary Benson 1985-7-1 Butte Plumas N.F. ECOS plot 11-123. Slope on west side of Middle Fork Feather River near Milsap Bar. 633 Comment
  RSA700220  Melica harfordii L. Ahart 2004-6-22 11112 Butte on the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch;, about 5 miles (air) west of Stirling City. 692 Comment
  UCR115105  Melica harfordii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CHSC49560  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  CDA15366  Melica subulata G. F. Hrusa 1997-5-29 13799 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Uncommon in this form, but the species relatively common here in dry shaded areas. Low area near creek. Comment
  LA12166  Melica subulata E. B. Copeland; 1929-7-16 338 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC262504  Melica torreyana John Thomas Howell 1955-6-15 30513 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  JEPS103288  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  JEPS108134  Melissa officinalis Lowell Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  CHSC43686  Mentha X piperita Vernon Oswald 1984-8-26 1677 Butte Mud Creek Diversion Channel on W. Sacramento Ave. w of Chico. 42 Comment
  SEINET10498169  Mentha X piperita Mary Susan Taylor 1978-9-9 Taylor 1923 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  CHSC32109  Mentha pulegium L. Ahart 1969-8-12 31 Butte Near Honcut. 45 Comment
  CHSC109668  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC26707  Mentzelia laevicaulis M. P. Hayes 1977-10-23 143 Butte In Lindo channel in large gravel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC4697  Mentzelia laevicaulis R. Carter 1966-7-10 469 Butte Found Feather River Canyon 4.4 mi W of Butte Co. line along W side Hwy. 70, growing on dry granite slope along Hwy. 70. 609 Comment
  NY112245  Mentzelia laevicaulis A. A. Heller 1914-8-13 11682 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC428763  Micranthes californica Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC33397  Micranthes integrifolia Lynette Wood 1979-3-6 Butte N side of Skyway (road Chico-Paradise), ca. 550 ft. out along canyon edge. 243 Comment
  CHSC87439  Micranthes integrifolia R. D. Fischer 2004-3-31 103 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  JEPS120079  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the of homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico. Comment
  CAS-BOT-BC429075  Micranthes odontoloma Mrs. C. C. Bruce 1898-7-1 2409 Butte Lassen peaks Comment
  UCSB63614  Micropus californicus var. californicus Cooley, Patrick 1990-4-7 Butte Humbolt Rd. ca. 2 mi. e of Chico, Butte Co.; Chico Quadrangle, 7.5', SW 1/4 of NE 1/4 of SW 1/4 Sect. 21, T22N, R2E 152 Comment
  CHSC31604  Microseris acuminata L. Ahart 1978-5-1 1700 Butte Peter Ahart Ranch, Honcut. Along edge of wash. 50 Comment
  SEINET10475279  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 Ahart 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC349165  Microseris elegans Lowell Ahart 1979-5-21 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC11954  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville. By Butte Creek. 1500 Comment
  CHSC45354  Microsteris gracilis Vernon Oswald 1987-4-16 2332 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  RSA4468  Microsteris gracilis subsp. humilis E. B. Copeland 1931-6-29 680 Butte Jonesville. 1500 Comment
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  POM202464  Mimulus aurantiacus var. grandiflorus L. S. Rose 1933-5-26 33186 Butte Feather River Canyon 5 mi. e. of Oroville 152 Comment
  UC103641  Mimulus aurantiacus var. grandiflorus Mrs. R. M. Austin 235 Butte Comment
  JEPS14976  Mimulus bicolor A. A. Heller 1914-5-17 11338 Butte near Forest Ranch 731 Comment
  CHSC118882  Mimulus glaucescens Christopher T. Ivey 2017-5-27 391 Butte Honeyrun Road, about 6 km NE of bridge crossing Butte Creek, roadside ditch on S side or road. 424 Comment
  JEPS5567  Mimulus glaucescens H. A. Dutton 1921-1 Butte near Hooker Oak; Chico Comment
  RSA589914  Mimulus guttatus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7206 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. N side Beatson Hollow, ca. 1.9 mi. along trail from entrance on Cherokee Rd. Comment
  SEINET8340981  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  CHSC79580  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte E roadside of Hwy 32, ca. 1 mi NE of road Forest Ranch. 1097 Comment
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  UC1586471  Mimulus nasutus Vernon H. Oswald and Lowell Ahart 1991-7-15 4741 Butte ca. 5.5 air mi ene Brush Creek (Milsap Bar Rd. (Forest Rd. 22N62), 6.4 mi w of Feather Falls-Little Grass Valley Rd. (Forest Rd. 22N94)) 845 Comment
  UC129114  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC20118  Minuartia californica M. S. Taylor 1975-4-26 522 Butte In vernal pool, on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  JEPS97433  Minuartia californica Lowell Ahart 1995-5-30 7588 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  HSC93374  Minuartia californica L. Ahart 1995-5-30 7588 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CHSC93501  Minuartia cismontana Lowell Ahart 2006-5-8 12591 Butte About 200 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 347 Comment
  CHSC42739  Minuartia douglasii Lowell Ahart 1987-5-11 5617 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SD2102  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville, damp woods 1500 Comment
  CHSC37433  Moehringia macrophylla R. A. Schlising 1982-5-19 4250 Butte E of village of Feather Falls at Lumpkin ridge. 1280 Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 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
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. Comment
  SEINET8263327  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC94003  Monardella odoratissima subsp. pallida R. D. Fischer 2004-6-20 781 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  CHSC84159  Monardella sheltonii Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the north side of the Ponderosa Reservoir, about 2 miles (air) north of Forbestown. 481 Comment
  SEINET4173692 Image available Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte 23 miles from Oroville east of Jarboe Pass on the Feather River Hwy Comment
  SEINET10895146  Monardella sheltonii A. Graff 1993-7-23 Graff 343 Butte Plumas National Forest. Hwy. 70 southwest to Oroville from Arch Rock, at a turnout on the right. Mixed hardwood-conifer forest. Past bloom. Comment
  CDA2665  Monochoria vaginalis T. C. Fuller 1959-10-2 3140 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  RSA97974  Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station. Comment
  SEINET10528526  Monochoria vaginalis Vernon H. Oswald, Lowell Ahart 1991-8-28 Oswald 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca 3.5 miles north-northwest of Biggs. Locally abundant emersed aquatic on the margins of rice fields. T19N R2E nw/S34, 100 feet agricultural area. Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  RSA125169  Monolopia major Hartweg 1847-4-13 1789 Butte Sacramento [probably Sacramento Valley, ca. 55 miles north of Yuba City, near Oroville] Comment
  UC392218  Montia chamissoi E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CAS-BOT-BC444887  Montia fontana A. A. Heller 1914-3-18 11209 Butte Eight miles north of Oroville Comment
  CHSC62367  Montia fontana subsp. amporitana B. Castro 1990-3-31 417 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House, in SW-facing lava-lined minor streambed with flat to gentle slope at head of Nugen Cyn. 280 Comment
  SEINET516349  Montia fontana subsp. amporitana Lowell Ahart 1974-12-11 301 Butte Growing on early drying soil near the edges of large rocks, Peter Ahart Ranch, about 1 1/4 mi. N and 1 1/4 mi. E of Honcut, about 12 mi. S of Oroville. 43 Comment
  CAS-BOT-BC264287  Muhlenbergia andina Lowell Ahart 1988-7-31 6147 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  UC1564738  Muhlenbergia andina V. Oswald and L. Ahart 1989-7-21 3885 Butte meadow paralleling Humbug Rd just ne West Branch of the Feather River (ca 0.5 mi ne of Snag Lake, ca 2.5 mi (air) se of Jonesville) 1780 Comment
  CAS-BOT-BC260528  Muhlenbergia filiformis Blanche Clear 1938-7-15 s.n. Butte Deer Creek, dirt road to Butte Meadows Comment
  CAS-BOT-BC260537  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2.5 miles SSE of Butte Meadows 1493 Comment
  CHSC34166  Muhlenbergia mexicana L. Ahart 1981-9-19 3182 Butte Along banks of Feather River ca. 100 m n of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  POM183183  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC78126  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC46270  Myosurus minimus Vernon Oswald 1989-4-19 3741 Butte Wurlitzer Unit, Vina Plains Preserve. Bottom of depression between Singer and Pine Creeks. 57 Comment
  SEINET10899320  Myosurus minimus var. filiformis Mary Susan Taylor 1980-3-28 Taylor 2398 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
  JEPS88529  Najas gracillima Vernon H. Oswald and Lowell Ahart 1996-6-22 8093 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River. 32 Comment
  SEINET10501563  Najas guadalupensis Mary Susan Taylor 1978-7-22 Taylor 1846 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  CHSC44042  Nama lobbii L. P. Janeway 1987-6-27 2329 Butte Along Little Kimshew Cr just north of Ramsey Bar. Open sandy DG among mtn. whitethorn. Site of old Ramsey Bar mining and timber activities. 1341 Comment
  RSA755440  Nasturtium officinale L. Ahart 2009-5-23 15728 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC105810  Navarretia capillaris Lowell Ahart 2010-9-21 17208 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
  CHSC1292  Navarretia divaricata subsp. vividior M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC30686  Navarretia filicaulis M. S. Taylor; R. Schlising 1980-7-6 3063 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  UC133843  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC230299  Navarretia heterandra Peter H. Raven 1953-5-9 5423 Butte 7 miles SE of Chico on Oroville Road Comment
  CAS-BOT-BC230301  Navarretia heterandra Lewis S. Rose 1945-5-12 45015 Butte Richardson Springs 304 Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC88062  Navarretia intertexta subsp. intertexta R. D. Fischer 2004-4-4 188 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at n/e end of Disk Golf Course, near connecting tr. to Guardian Trail. Old road bed. 393 Comment
  JEPS107909  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  JEPS94306  Navarretia leptalea subsp. bicolor Lowell Ahart 1997-8-1 7781 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  HSC32628  Navarretia leucocephala David Johnson 1974-4-20 20 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  UCR66594  Navarretia leucocephala subsp. leucocephala H. F. Copeland 1923-5-7 0612 Butte Sacramento Valley, Blavo 46 Comment
  CAS-BOT-BC232626  Navarretia pubescens Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS127002  Navarretia pubescens Lowell Ahart 2016-5-24 20847 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC96231  Navarretia subuligera R. Fischer 2006-5-21 997 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants were growing adjacent a seasonal spring on the east side of the Overlook Road. 518 Comment
  CHSC28860  Navarretia tagetina J. D. Jokerst 1979-5-18 463 Butte Top of North Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  CHSC64123  Navarretia viscidula subsp. purpurea B. Castro; L. P. Janeway 1988-6-5 262 Butte On slope above Little Chico Ck. 243 Comment
  NY337163  Nemophila alata H. E. Brown 1897-3-3 173 Butte Clear Creek Comment
  CAS-BOT-BC7199  Nemophila fallax C. C. (Mrs.) Bruce 1897-5-1 2037 a Butte Big Chico Comment
  CHSC24764  Nemophila heterophylla P. J. Welch 1976-4-12 18 Butte Ca. 1 to 2 yds n of Crown Pt. Rd. and ca. 0.3 mi e of Crown Pt. Rd. intersection with Deer Creek Hwy. (Hwy.32); ca. 10.1 mi ene of Chico. 304 Comment
  JEPS110436  Nemophila heterophylla Lowell Ahart 2006-4-28 12544 Butte On the south side of the dirt road, on the west side of a small stream, a part of the south drainage of Beatson Hollow, about 1/2 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 301 Comment
  RSA769679  Nemophila heterophylla L. Ahart 2009-4-3 15531 Butte North margin of gravel road, east of Cedar Grove Parking Area in Lower Bidwell park, Chico 67 Comment
  UC726899  Nemophila heterophylla A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC90647  Nemophila pedunculata Lowell Ahart 2005-4-2 11694 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
  CHSC95152  Nemophila spatulata R. D. Fischer 2005-6-5 828 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and c. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Along eastern edge of Chico Meadow. 1280 Comment
  SEINET10497064  Nemophila spatulata Mary Susan Taylor 1978-6-24 Taylor 1660 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
  CHSC112924  Nicotiana acuminata var. multiflora B. Castro; R. Carter 2010-7-13 1823 Butte Sacramento Valley. S side of Thermalito Power Canal ca 0.3 mi E of Hwy 70, ca 0.25 mi W of Table Mtn Blvd and ca 0.25 mi S of Garden Drive , on the north end of Oroville. 70 Comment
  CHSC66447  Nicotiana quadrivalvis Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 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 riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC95359  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8890 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  POM110462  Odontostomum hartwegii C. C. Bruce 1898-05 1838 Butte Unspecified. Comment
  SEINET10472784  Odontostomum hartwegii Lowell Ahart 1985-5-15 Ahart 4980 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
  CHSC43190  Oreostemma alpigenum var. andersonii Robert Banchero 1981-7-19 595 Butte Butte Creek House, ca 3 air mi NE of Jonesville. 1755 Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  JEPS12903  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, west of willow Creek. Comment
  SEINET10500395  Orobanche fasciculata var. franciscana Lowell Ahart 1985-5-10 Ahart 4961 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC48679  Orthilia secunda Vernon Oswald 1987-7-29 3162 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 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
  SEINET4856147  Orthocarpus brownii Unknown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek). Comment
  SEINET10549677  Orthocarpus erianthus Mary Susan Taylor 1973-1 Taylor 59 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12318340  Orthocarpus erianthus S. C. Morey 1978-1 14 Butte Hwy 32, ca 9.1 mi E of junction with Hwy 99 at Chico 523 Comment
  CAS-BOT-BC254366  Oryza sativa Mrs. Donahue 1921-9-1 s.n. Butte Donahue Ranch near Chico Comment
  CHSC27915  Osmorhiza chilensis M. S. Taylor 1978-7-19 1733 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jomesville. 1524 Comment
  JEPS115575  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC84127  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area, about 3/5 of a mile west of Pacific Heights Road, about 5 1/2 miles (air) southwest of Oroville. 39 Comment
  CHSC39671  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  UC703040  Packera eurycephala var. lewisrosei L. S. Rose 1939-6-7 39247 Butte 3 mi s of Pulga; North Fork of Feather River; North Fork of Feather River, 3 miles S of Pulga, Butte Co. Comment
  CDA32587  Panicum acuminatum var. acuminatum L. Ahart 1998-7-1 8019 Butte Below or west of a large seep, south 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. Comment
  CAS-BOT-BC253829  Panicum dichotomiflorum Lowell Ahart 1987-8-30 5869 Butte Along Highway 70 about 1/8 mile W of Big Bend Road, about 1.5 miles SW of Jarbo Gap 655 Comment
  UCD89580  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  UCD89584  Panicum dichotomiflorum Beecher Crampton 1963-9-9 6885 Butte Honcut. Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  CHSC2171  Paspalum dilatatum D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  CHSC100417  Paxistima myrsinites L. P. Janeway; Heather Koeth 2008-11-19 9612 Butte Northern High Sierra Nevada. Along a small creek in a steep deep draw 150 m southwest of Bush Creek, 1.2 air km west-northwest of the mouth of Bus Creek at French Creek. 707 Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  JEPS117143  Pectocarya pusilla Lowell Ahart 2010-4-30 16595 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC86078  Pellaea andromedifolia R. D. Fischer; Paul Maslin 2003-12-24 1022 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch. Site about 1/2 mile north of the gated main entrance of the Big Chico Creek Ecological Reserve (BCCER) and about 200 ft. westward downhill of cliffs. 518 Comment
  CAS-BOT-BC67553  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 8 miles north-east of Feather Falls, 1 1/2 miles east of Camp 18 975 Comment
  CHSC32734  Pellaea mucronata M. S. Taylor 1981-4-8 3482 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
  CHSC38249  Pellaea mucronata Vernon Oswald 1982-12-19 26 Butte Bidwell Park, Chico, on the north rim at the level of Horseshoe L. 164 Comment
  CHSC58  Pellaea mucronata V. Holt 1935-3-17 Butte Salmon Hole on Chico Creek. 550 Comment
  SEINET10529803  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5230 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET267156 Image available Pellaea mucronata subsp. mucronata T. A. Ranker, P. G. Trapp 1994-6-17 1623 Butte Pence Road south of Paradise. 395 Comment
  CHSC92734  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  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
  CHSC1850  Penstemon breviflorus subsp. glabrisepalus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC27977  Penstemon deustus var. suffrutescens M. S. Taylor 1978-7-18 1710 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  POM219260  Penstemon gracilentus H. F. Copeland 1930-7-26 1375 Butte Jonesville. Canyon of Butte Creek. 1524 Comment
  SEINET10548024  Penstemon laetus Mary Susan Taylor 1980-6-14 Taylor 2878 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  CHSC107592  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  POM220089  Penstemon laetus var. leptosepalus H. F. Copeland 1927-9-4 480 Butte Jonesville. Comment
  POM43769  Penstemon laetus var. leptosepalus C. C. Bruce 1898-06 2415 Butte Forest Ranch. Comment
  NY627277  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit) 1706.9 Comment
  SBBG28898  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte above Jonesville 1900 Comment
  SEINET10548071  Penstemon newberryi Mary Susan Taylor 1978-6-24 Taylor 1650 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC107594  Penstemon newberryi var. newberryi Lowell Ahart 2011-7-9 17577 Butte Northwest part of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CAS-BOT-BC245638  Penstemon personatus Robert Banchero 1981-7-19 609 Butte 1 mile NE of Bald Mt. lookout on Bald Mt. 1780 Comment
  CHSC110763  Penstemon personatus Dean Wm. Taylor; Bryan Waylan 2011-8-3 21139 Butte The Sierra Nevada. Logging road ca. 1 air mile North of Bald Mountain lookout (watershed Middle Fork Feather River). 1584 Comment
  JEPS83779  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  SEINET5329277 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte T23N R8E S5 SE1/4 Comment
  CHSC39892  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. 100 Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  CHSC86081  Pentagramma pallida R. D. Fischer 2003-12-26 25 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. West side of Diversion Dam parking area. 231 Comment
  CHSC29014  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-4 2447 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC79635  Pentagramma triangularis Simona Altman 1999-3-9 41 Butte At intersection of Skyway and Canyon Rim Pl. 76 Comment
  CHSC83881  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CHSC108170  Perideridia kelloggii L. P. Janeway 2011-8-18 10664 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CHSC37275  Perideridia lemmonii L. Ahart 1982-8-19 3744 Butte Along sides of North Honcut Creek, in a protected shady place, Peter Ahart Ranch, ca. 1 mile n and 3 mi e of Honcut. 50 Comment
  CHSC40215  Perideridia lemmonii Lowell Ahart 1985-6-30 5083 Butte Near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC40235  Perideridia lemmonii Vernon Oswald 1985-6-15 1830 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CHSC91467  Perideridia lemmonii Lowell Ahart 2005-7-12 12143 Butte About 40 yards south of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 40 yards east of Forest Road 21N40, about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  RSA0116107  Perideridia lemmonii Lowell A. Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10454550  Perideridia lemmonii Lowell Ahart 1985-8-11 Ahart 5160 Butte Peter Ahart Ranch about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC1343  Persicaria amphibia V. Holt 1942-6-7 Butte Near Chico. Comment
  CAS-BOT-BC413701  Persicaria hydropiper John Thomas Howell 1959-9-20 34644 Butte Eastern outskirts of Oroville 60 Comment
  CHSC42973  Persicaria lapathifolia Lowell Ahart 1987-7-3 5759 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
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Jan 9 2013
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  UCR237312  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18763 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC25277  Petroselinum crispum K. R. Stern 1977-4-25 Butte Comment
  SEINET10546874  Phacelia Mary Susan Taylor 1979-10-5 Taylor 2229 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  RSA421518  Phacelia bicolor M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  JEPS104201  Phacelia cicutaria var. cicutaria Lowell Ahart 2003-4-10 10065 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CHSC52403  Phacelia egena R. Smallwood 1969-4-25 19 Butte Butte Cr Cyn; Honey Run Rd at the Covered Bridge; 15 yds NW of old bridge. 137 Comment
  UC1047037  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 343 Butte along Feather River Hwy about 0.5 mi below Las Plumas road junction (about 14 mi ne of Oroville) Comment
  CDA13727  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1997-6-27 13905 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC720  Phacelia heterophylla subsp. virgata R. M. Staley 1952-7-15 Butte Paradise. 548 Comment
  RSA0055024  Phacelia heterophylla var. virgata James R. Shevock 1972-5-19 1778 Butte Jarbo Pass, Highway 70, Feather River Canyon. 701 Comment
  CHSC97041  Phacelia vallicola B. Castro; Plumas NF/Feather River botanists 2005-6-6 1485 Butte On SW end of Lumpkin Ridge, ca 6 3/4 air mi NE of town of Feather Falls and 1.3 mi E of the 'Camp 18' site on topo maps. Ca 300 ft SE of USFS Rd 22N27 (Lumpkin Rd). ca 2 mi E of its jcn with the County Rd and USFS Rd 22N94 to Fall River. 1295 Comment
  CHSC117300  Phalaris arundinacea B. Castro; Melinda Carlson 2007-10-25 1677 Butte (Arroyo Chico land grant area). Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W. of River Road and north of the creek with surrounding disturbed riparian forest. 39 Comment
  CHSC84009  Phalaris brachystachys Lowell Ahart 2003-6-16 10286 Butte On the east side of Wickman Road, about 100 yards south of Richvale West Road, about 1 3/4 miles west of Richvale. 29 Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC58290  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC6622  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U on Chico State College campus. 60 Comment
  CHSC60999  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC46608  Phleum alpinum V. Oswald; L. Ahart 1989-7-12 3853 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. On meadow. 1901 Comment
  CAS-BOT-BC250864  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  CHSC87951  Phleum pratense Lowell Ahart 2004-6-22 11124 Butte On the north side of Hupp Coutolenc Road, about 1/2 mile north of Paradise Lake, about 1/2 mile northeast of De Sabla Reservoir, about 4 miles (air) southwest of Stirling City. 821 Comment
  RSA700218  Phleum pratense L. Ahart 2004-6-22 11124 Butte on the north side of the Hupp Coutolenc Road, about 1/2 mile north of Paradise lake, about 1/2 mile northeast of De Sabla Reservior, about 4 miles (air) southwest of Stirling City. 822 Comment
  UC880606  Phlox speciosa Helen M. Edwards Jun 1917 Butte De Sabla Comment
  SJSU7853  Phoradendron bolleanum F. S. Gereb 1968-5-4 88 Butte above Paradise Reservoir, near Paradise 609 Comment
  HSC100733  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 210 Comment
  CHSC3292  Phoradendron villosum M. L. Hillier 1966-2-14 Butte 8.2 miles n.e. of C.S.C. Admin build. at n. end Bidwell Park. Chico. Comment
  SEINET10931448  Physalis acutifolia Mary Susan Taylor 1977-10-10 Taylor 1507 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CHSC1931  Physalis lancifolia D. Bower 1953-8-13 Butte 4A Llano Seco. Rice fields. Comment
  UCD126004  Physalis lancifolia Beecher Crampton 1957-9-17 4616 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  CDA34619  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 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
  CHSC102824  Phytolacca americana Lowell Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC105954  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  JEPS115126  Phytolacca americana Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 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 68 Comment
  RSA769809  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  SEINET10537235  Phytolacca americana Mary Susan Taylor 1975-6-22 Taylor 786 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC78286  Pinus attenuata Lowell Ahart 1987-5-11 5611 Butte along Lumpkin Road, about 1.5 miles north-east of Forbestown Road 426 Comment
  SD9  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  SEINET10866941  Pinus jeffreyi Mary Susan Taylor 1978-7-18 Taylor 1706 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC49680  Piperia transversa Vernon Oswald 1983-7-26 914 Butte Calif. Hwy 32, 6.2 mi n-e of Forest Ranch. 1036 Comment
  UC177517  Piperia unalascensis H. M. Hall 1914-7-28 9794 Butte Butte Creek 1524 Comment
  CHSC4403  Piptatherum miliaceum R. L. Smith 1966-5-5 3 Butte Paradise, 5 mi sw of post office. Comment
  JEPS95141  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Clear Creek, s of the hay barn, Butte Junior College Clear Creek; , Butte Junior College 76 Comment
  CHSC6054  Pistacia terebinthus M. MacArthur 1968-4-17 197 Butte In lawn between LS bld. and Administration bld., Chico State College 60 Comment
  CHSC103976  Plagiobothrys austiniae Lowell Ahart 2010-5-7 16609 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
  CHSC38274  Plagiobothrys austiniae Vernon Oswald 1983-3-13 161 Butte Upper Bidwell Park, Chico, along Yahi Trail 100 ft. w of Parking Area P (2.0 mi e of the power lines). Along the top of a cliff. 195 Comment
  SEINET12320808  Plagiobothrys fulvus Unknown 1974-1 15 Butte adjacent to Fern Bank area, upper Bidwell Park Comment
  UC196289  Plagiobothrys glyptocarpus A. A. Heller 1914-3-16 11202 Butte low hills 8 mi n Oroville Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UCR212286  Plagiobothrys greenei Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  RSA178642  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte East of Chico near the Hooker Oak, Comment
  CHSC105806  Plagiobothrys hispidulus Lowell Ahart 2010-9-21 17229 Butte Along the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC11862  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  CHSC31256  Plagiobothrys hispidulus R. A. Schlising; R. Banchero 1980-7-14 3892 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows); in meadow/pasture. 1511 Comment
  UC480659  Plagiobothrys hispidulus H. F. Copeland 1927-9-4 Butte Jonesville Comment
  CHSC33133  Plagiobothrys leptocladus J. D. Jokerst 1980-5-1 693 Butte Ahart Ranch ca 1/2 mi N of the ranchhouse, S edge of Butte County. Comment
  CHSC28997  Plagiobothrys nothofulvus J. D. Jokerst 1980-3-12 472 Butte Foothills NE of Chico. 67 Comment
  CHSC27058  Plagiobothrys shastensis Lowell Ahart 1978-5-1 1698 Butte Peter Ahart Ranch, Honcut. In a farmed field. 50 Comment
  UC763056  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC48002  Plagiobothrys stipitatus Vernon Oswald 1983-5-6 434 Butte Nord-Cana Hwy. 0.5 mi n of Bennett Rd. Along the edge of a vernal pond. Comment
  CHSC112708  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-10-26 19208 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC32155  Plagiobothrys stipitatus var. micranthus L. Ahart 1980-5-10 2226 Butte Peter Ahart Ranch, Honcut. On bottom of a small wash in farmed field, ca. 2.5 mi n and 1/4 to 1/2 mi e of Honcut. 50 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  JEPS117192  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  UCD80160  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-3-31 SNFN 0073 e Butte CDFG North Table Mountain Wildlife Area, located in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  SBBG129105  Plagiobothrys stipitatus var. micranthus L. Ahart 2008-6-13 14824 Butte depression in a small meadow, bottom of an old gold mined area, ca. 350 yards SW of the cemetery, ca. 50 yards N of Oregon Gulch, ca. 10 mi (air) NE of Oroville 305 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 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
  CHSC115211  Plagiobothrys tenellus Lowell Ahart 2015-4-27 20079 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iorn gate aling Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC28150  Plagiobothrys tenellus Robert A. Schlising 1979-4-22 3375 Butte Along the Skyway, ca 1 mi s of jct with Neal Road in Paradise. Comment
  CHSC31263  Plagiobothrys tenellus R. A. Schlising 1980-3-24 3525 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC43553  Plagiobothrys tenellus Lowell Ahart 1978-4-19 1652 Butte Along the trail, about 1/2 mile south of Feather Falls, about 5 miles north of the town of Feather Falls. 548 Comment
  UC179493  Plagiobothrys tenellus A. A. Heller 1914-5-8 11373 Butte Clear Creek-Paradise grade Comment
  CAS-BOT-BC60824  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Peter Aharts Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 Comment
  CHSC28984  Plantago bigelovii R. A. Schlising 1980-3-23 3522 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC33702  Plantago bigelovii L. Ahart 1981-4-6 2745 Butte A little SE of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi swof Gridley. 35 Comment
  SEINET10499841  Plantago bigelovii Mary Susan Taylor 1975-4-18 Taylor 482 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC71186  Plantago coronopus Lowell Ahart 1998-6-9 7984 Butte At the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC77990  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte On the edge of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SEINET12318338  Plantago coronopus D. M. Burk 1978-1 117 Butte 50 ft S of intersection of Broyles Rd & Hwy 99, ca 11 mi N of Chico 59 Comment
  CHSC70853  Plantago elongata Lowell Ahart 1988-4-8 7949 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  CHSC28636  Plantago erecta M. S. Taylor 1979-3-31 1974 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC4071  Plantago erecta H. E. Lindahl 1967-4-2 13 Butte Located 1/2 mi. s and 100 yards w of forks of dry creek Pentz. 152 Comment
  POM61255  Plantago erecta Copeland 1903-4-10 3034 Butte Chico. Comment
  CHSC37374  Plantago lanceolata R. A. Schlising 1981-9-20 4201 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
  CHSC33825  Plantago major var. scopulorum R. E. Preston 1981-8-5 121 Butte Wet gravel bar, n bank of Chico Creek; ca. 1 3/4 mi nne of the boundary of Upper Bidwell Park at Road's end, Chico. 228 Comment
  UC1609273  Platanthera sparsiflora Lowell Ahart 1993-7-29 7128 Butte about 2.5 mi e Bald Mountain (0.8 mi sw of the Snow Mine, about 6.5 mi ne of Stirling City) 1463 Comment
  SEINET10470070  Platanthera sparsiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4757 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC103113  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC39238  Plectritis brachystemon M. S. Taylor; K. Tharp 1983-3-12 5236 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC109099  Plectritis ciliosa Lowell Ahart 2012-3-23 17791 Butte On and around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten MIle House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC29232  Plectritis congesta M. S. Taylor 1980-4-1 2428 Butte On bluffs above Covered Bridge, ca. 100 ft s of Butte Creek, ca. 6 mi e of Chico 182 Comment
  JEPS95987  Poa annua Lowell Ahart 1999-10-28 8311 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
  CHSC6681  Poa bulbosa Marilyn Lee 1968-3-8 113 Butte 1271 E. 1st Ave. in almond orchard, Chico. Comment
  SEINET10657849  Poa bulbosa Lowell Ahart 1987-5-6 Ahart 5561 Butte On dry bare disturbed soil along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. Comment
  CAS-BOT-BC255973  Poa pratensis Lowell Ahart 1980-5-17 2275 Butte 1/2 mile south-east of Hurleton 600 Comment
  CDA19116  Poa pratensis H. D. Riley 2001-5-2 PDR 1170767 Butte Sacramento Valley; In residential lawn, on 1419 Muir Ave., Chico. 0 Comment
  CHSC11975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at 'the summit. 2000 Comment
  RSA4414  Poa pringlei E. B. Copeland 1931-6-22 s.n. Butte Jonesville 2000 Comment
  CHSC101254  Poa secunda subsp. secunda L. P. Janeway; B. Castro 2009-4-11 9724 Butte Northern Sierra Nevada Foothills. At saddle of ridge between Oroville Dam boat ramp and Potter Ravine, 1.2 km north of the boat ramp. 340 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
  CHSC54370  Poa secunda subsp. secunda M. Bailey 1991-3-9 550 Butte Butte College campus, in the vicinity of the intersection of Clark and Pentz Roads. 85 Comment
  UCD91669  Poa secunda subsp. secunda P. B. Kennedy 1914-5-8 s.n. Butte Clear Creek, Paradise Grade. Comment
  UCD91854  Poa secunda subsp. secunda Robert E. Preston 1982-3-25 203 Butte Ca. 1/4 mile E of Pulga. 487 Comment
  CHSC41188  Poa sierrae J. D. Jokerst 1984-6-4 2043 Butte Ca 100 meters east of Camp Creek. Canyon of the North Fork Feather River. 975 Comment
  CHSC31937  Poa wheeleri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1047 Butte Top of Hogback running NE of summit of Humboldt Peak, ca. 400 meters NE of summit. Northern most portion of Butte Co. 2133 Comment
  CHSC26716  Polanisia dodecandra subsp. trachysperma M. P. Hayes 1977-10-23 140 Butte Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC30772  Polanisia dodecandra subsp. trachysperma M. S. Taylor 1980-8-15 3255 Butte S side of Neal Rd, ca. 0.1 mi e of its jct with Hwy 99, at vernal creek culvert, ca. 7 mi s of Chico. 60 Comment
  JEPS115262  Polanisia dodecandra subsp. trachysperma Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15437 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
  UC600676  Polemonium pulcherrimum E. B. Copeland July, 1930 Butte Big Summit Jonesville, Big Summit 2200 Comment
  CHSC62348  Polycarpon tetraphyllum B. Castro 1990-5-6 426 Butte In residential area at south end of Chico. 60 Comment
  CAS-BOT-BC6543  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  RSA726857  Polygala cornuta var. cornuta L. Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the both sides of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road., About 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 686 Comment
  CHSC100501  Polygonum aviculare Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15409 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC41905  Polygonum aviculare Lowell Ahart 1976-9-21 1200 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CHSC46878  Polygonum aviculare Vernon Oswald 1989-9-6 3991 Butte Between the Midway and the railroad at Butte Creek, ca. 1.5 mi sse of Durham. Rancho Esquon. Common weed on hard-packed soil of a parking area on the north edge of the creek. 30 Comment
  CAS-BOT-BC109134  Polygonum bidwelliae Mary E. Wall 1936-6-1 s.n. Butte Paradise. Comment
  CHSC40067  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Thin soil on volcanic rocks along the Neale grade between Chico and Paradise. Comment
  RSA489570  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of Hwy 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico. 610 Comment
  UC204383  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte near Hog Springs (6 mi e of Chico) Comment
  JEPS94976  Polygonum bolanderi Vernon Oswald and Lowell Ahart 1997-9-9 8861 Butte 2.0 mi ne of Lomo (Humboldt Road between Lomo and Butte Meadows, near the 4833 ft. benchmark); Humboldt Road Comment
  CAS-BOT-BC414368  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA724853  Polygonum lapathifolium L. Ahart 2006-9-28 13371 Butte E side of the N Fork of the Feather River, on the W side of Hwy 70, 50 yards SW of the Shady Rest Area S of the Arch Rock Tunnel. Comment
  JEPS87372  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC71871  Polypodium californicum Lowell Ahart 1990-3-19 6419 Butte south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 36 Comment
  CHSC103672  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC39620  Polypodium calirhiza Lowell Ahart 1983-4-1 3917 Butte East of the water fountain, along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  JEPS120176  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  UCD80677  Polypodium calirhiza CNPS SN Foothill Team 2005-3-30 SNFN 0070 c Butte CDFG North Table Mountain Wildlife Area. This site is in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  UC1609044  Polypogon australis Lowell Ahart 1993-7-23 7098 Butte about 6 (air) mi ne Feather Falls (about 100 yards w of the bridge across the Fall River, w side of river); Fall River, ne of Feather Falls 1036 Comment
  CAS-BOT-BC233061  Polypogon interruptus John Thomas Howell 1951-8-19 s.n. Butte Near Pulga Comment
  CAS-BOT-BC233207  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  CHSC28464  Polypogon maritimus R. Schlising 1979-5-30 3430 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
  JEPS94905  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, at a poor dirt road, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC232571  Polypogon monspeliensis Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  CHSC46667  Polystichum californicum Vernon H. Oswald 1989-7-12 3932 Butte Wurlitzer Unit, Vina Plains Preseve. On south side of Pine Creek between the bridge on Cana-Pine Creek Rd and the mouth of Singer Creek. 54 Comment
  CHSC23408  Polystichum imbricans M. S. Taylor 1976-3-6 1013 Butte At Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC65530  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte Trending northwest from the western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River. 929 Comment
  CHSC60945  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC4145  Polystichum munitum R. Carter 1966-6-26 463 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC33402  Populus tremuloides R. E. Preston 1981-7-9 21 Butte Ca. 75 m of West Branch of Feather River, ca. 0.5 km s of Snag Lake, ca. 4.8 km sse of Jonesville. 1708 Comment
  SEINET10460842  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Submerged or reaching surface of water in lily pond near Butte Creek House 1750 Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  SEINET11664887  Potamogeton natans L. P. Janeway 1987-1 2166 Butte along French Creek across from mouth of Ram Creek 617 Comment
  CHSC40329  Potentilla glandulosa Lowell Ahart 1985-5-15 4995 Butte On the sides of a stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC45740  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-19 2224 Butte Along Sly Cr at crossing of rd to SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  CDA13900  Potentilla glandulosa subsp. glandulosa G. F. Hrusa, T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada; Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC45609  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-20 2079 Butte Along Hwy 70 2.1 mi NE of Pulga Bridge; N Fk Feather River near Heinz Cr. 472 Comment
  CHSC48862  Potentilla gracilis var. fastigiata Vernon Oswald 1983-7-6 820 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Meadow. 1325 Comment
  SD2236  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  POM197046  Potentilla norvegica subsp. monspeliensis H. F. Copeland 1928-8-22 1066 Butte Jonesville. 1524 Comment
  CAS-BOT-BC64614  Primula suffrutescens R. A. Schlising; R. Preston; R. Banchero; D. Burk 1981-7-21 s.n. Butte SE. of Jonesville in ne. part of county, on ridgetop of Snow Mountain. 2103 Comment
  CHSC6045  Prunus persica M. MacArthur 1968-6-19 229 Butte Ca. 10 ft. SE of Big Chico Creek near PSA bridge, Chico State College. 60 Comment
  CHSC2809  Prunus serotina Carl Pejsa 1958-3-15 89 Butte Bidwell Park Forestry Station. Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC29290  Pseudognaphalium luteoalbum R. A. Schlising 1980-4-2 3533 Butte Richvale vernal pools, 1/4 miles S of Junction Hwy 162 to Oroville and Hwy 99; along the latter and across from Thermalito Afterbay. Comment
  CHSC41999  Pseudognaphalium thermale Lowell Ahart 1975-9-4 973 Butte Along the South Fork of the Feather River, about 1/2 mile north of the Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  JEPS20400  Pseudognaphalium thermale W. L. Jepson 1939-8-17 19466 Butte Feather River bottom near Oroville; Feather River 45 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC34411  Psilocarphus brevissimus var. brevissimus R. M. Winchell 1980-4-23 1 Butte N of Chico, between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC28826  Psilocarphus oregonus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 418 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd (at e edge of Mt). Below high water mark of vernal pools. 381 Comment
  JEPS119988  Psilocarphus tenellus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  RSA712989  Pteridium aquilinum var. pubescens L. Ahart 2006-4-28 12545 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  CHSC60976  Pterospora andromedea Lowell Ahart 1993-6-26 7026 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek's Reservoir. 1188 Comment
  CHSC108767  Pyracantha koidzumii L. P. Janeway 2011-6-1 10354 Butte Sacramento Valley. North side of the levee on the south side of the Feather River just northwest of Centennial Park, Oroville. Old gravel bar along south side of the river, just above the water line. 41 Comment
  JEPS119779  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18020 Butte South of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC462603  Pyrola dentata A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  CAS-BOT-BC462604  Pyrola dentata Duncan Dunning 1921-7-29 9 (USDA no. 42081) Butte Lassen Forest, Chico Meadows 944 Comment
  UC426928  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  UC474255  Pyrola picta E. B. Copeland 1930-7-21 Butte Jonesville: Hill above the hotel Comment
  SEINET8371774  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CHSC110989  Pyrus calleryana Lowell Ahart; L. Hanson, S. Bazell, J. Guardino 2012-5-17 18073 Butte On the west side of a horse trail, about 50 ft. south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC45811  Quercus H. F. Copeland 1920-8-26 177 Butte near Jonesville 1219 Comment
  CAS-BOT-BC86634  Quercus douglasii Lowell Ahart 1981-4-24 2781 Butte Peter Ahart Ranch, near Honcut Creek, about 1.5 mi N and 3 mi E of Honcut 50 Comment
  CHSC23663  Quercus douglasii M. S. Taylor 1976-4-26 1079 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. Comment
  CAS-BOT-BC86118  Quercus dumosa H. F. Copeland 1939-8-8 1575 Butte Humboldt Road 12 miles E of Chico Comment
  UCD45944  Quercus durata D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  UCD46177  Quercus garryana John Thomas Howell 1955-6-15 30495 Butte (actually Q. garryana var. breweri (Engelm.) Jepson X Q. dumosa Nutt.) Volcanic slope, 6 miles from Paradise on road to Pentz, Butte County. Part of series, Nos. 30493-304500. 426 Comment
  UC1135617  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-28 98 Butte 2 mi e Keefer's Old Mill; Chico Quad. 365 Comment
  CHSC110993  Quercus ilex Lowell Ahart; L. Hanson, S. Bazell, J. Guardino,W. Dempsey 2012-6-7 18175 Butte On the south side of the paved park road, south of Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  LA205377  Quercus vacciniifolia A. A. Heller; 1915-6-10 11957 Butte Little Summit 1371 Comment
  CHSC108750  Quercus wislizeni B. Castro 2002-6-14 1376 Butte Northern Sierra Nevada Foothills. Near Spring on E side of Dark Canyon Road ~0.8 mi NE of boatramp into arm of Lake Oroville. By side of road under transmission lines. 359 Comment
  UC5708  Quercus wislizeni W. H. Brewer 1862-10-17 1472 Butte Table Mountain, Oroville Comment
  CAS-BOT-BC379413  Ranunculus alismifolius var. alismellus H. F. Copeland 1920-7-11 67 Butte Scotch John Meadows 1829 Comment
  CHSC48696  Ranunculus aquatilis var. aquatilis Vernon Oswald 1984-3-26 1088 Butte Beside Meridian Rd. ca 9.5 mi nnw of Chico and 0.6 mi s of the Tehama-Butte County line. In a drainage in a field. 83 Comment
  CAS-BOT-BC378989  Ranunculus arvensis 1976-4-16 s.n. Butte Humbug Road, at Chico Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD129646  Ranunculus bonariensis var. trisepalus Barbara Ertter, Lowell Ahart 1986-4-13 5901 Butte ca 2 airmiles NNE of Honcut between Oroville and marysville, Peter Ahart Ranch 29 Comment
  CHSC1475  Ranunculus californicus Agnus Riker 1897-5-1 Butte Comment
  CAS-BOT-BC378769  Ranunculus canus var. canus A. A. Heller 1914-4-29 11336 Butte low ground 12 miles north of Chico; moist shaded places near Pine Creek, 8 miles south of Vina Comment
  SEINET12094428  Ranunculus hebecarpus Unknown 1982-1 100 Butte Near Chico in Upper Bidwell Park, T22N, R2E, sec. 8 152 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
  UC1561857  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
  SEINET12088566  Ranunculus occidentalis Unknown 1966-1 320 Butte ca 7 mi E Oroville at 6120 Woodleaf St. Rt., 300 yds off Feathervale, behind house 244 Comment
  CHSC23448  Ranunculus occidentalis var. occidentalis T. Manolis 1974-4-21 21 Butte Along Butte Creek, 3 mi e of Chico. Comment
  CHSC11809  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. In meadows. 1550 Comment
  JEPS87196  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  SEINET13946321 Image available Rhamnus crocea Lewis S. Rose 1955-1 55104 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  RSA719541  Rhamnus rubra Michael A. Vincent, K. Levings 2006-7-29 12885 Butte NE of Chico along Rt. 32. Comment
  CHSC27307  Rhamnus tomentella subsp. tomentella T. B. Devine 1977-5-22 388 Butte N side of Pine Creek under Sycamore. % mi e of Hwy 99. 121 Comment
  CHSC33791  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-7-10 4066 Butte North side of Feather River Hwy 70 at Pulga Bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 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
  CHSC31679  Rhododendron occidentale L. Ahart 1977-4-16 1304 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  CHSC46015  Rhododendron occidentale Lowell Ahart 1979-4-28 1849 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET5569898  Ribes californicum H. S. Gentry, S. Koch 1962-1 19763 Butte Cohasset. 914 Comment
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  CAS-BOT-BC212673  Ribes nevadense Lowell Ahart 1982-5-8 3420 Butte Forbestown Resevoir 700 Comment
  CDA13286  Ribes roezlii G. F. Hrusa, T. D. Wilfred 1996-7-9 13134 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UC1127530  Ribes roezlii P. L. Johannsen 1936-7-16 929 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  UC725920  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte at foot of the grade leading down from Stirling City 914 Comment
  RSA0024707  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte Near river at foot of grade leading down from Stirling City. Comment
  SEINET10937201  Ribes roezlii Mary Susan Taylor 1976-4-4 Taylor 1054 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
  SEINET12216578  Ribes roezlii M. R. Nichols 1975-1 14 Butte 6.8 mi NE of Chico on Cohasset Rd from Chico Airport 579 Comment
  CAS-BOT-BC173955  Ribes viscosissimum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CAS-BOT-BC340982  Robinia pseudoacacia Lowell Ahart 1968-4-20 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC6050  Robinia pseudoacacia M. MacArthur 1968-6-18 226 Butte S edge of Big Chico Creek next to bridge by PSA bld., Chico State College campus. 60 Comment
  CAS-BOT-BC74459  Rorippa curvisiliqua Lowell Ahart 1982-8-22 3761 Butte Along the bottom of North Honcut Creek, a little southwest of the Peter Ahart Ranch. 50 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC76413  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1999-10-28 8298 Butte On the bottom of a wash, just southeast of the small pond where you can park, 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
  CDA25114  Rorippa curvisiliqua var. orientalis L. Ahart 2002-10-17 9987 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS108949  Rorippa curvisiliqua var. orientalis Lowell Ahart 2006-9-11 13279 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
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC92507  Rorippa palustris var. occidentalis Lowell Ahart 2005-12-11 12509 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
  JEPS103497  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the S side of Central House Road, ca 80 yards E of the bridge across Whyman Ravine, ca 1/4 mile E of Highway 70, ca 12 miles SW of Oroville. 27 Comment
  JEPS99061  Rosa californica Lowell Ahart 2002-6-7 9709 Butte On the north banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) SE of Oroville. 36 Comment
  SEINET10597110  Rostraria cristata A. Arthur Heller 1902-5-13 Heller 5534 Butte Grade between Clear Creek and Paradise. Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC156612  Rubus bifrons Lowell Ahart 1982-9-29 3835 Butte Near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley 1100 Comment
  CHSC23656  Rubus laciniatus M. S. Taylor 1976-4-24 1065 Butte Ca. 10 ft w of Oroville-Quincy Hwy, ca. 50 ft s of Lake Madrone, in vicinity of Berry Creek entrance to the Lake. 914 Comment
  CHSC42006  Rubus laciniatus Lowell Ahart 1975-9-4 976 Butte Along a dirt road, about 2 miles north of Feather Falls. 548 Comment
  JEPS115363  Rubus laciniatus Lowell Ahart 2009-7-9 16013 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  POM91428  Rubus macropetalus C. C. Bruce 1897-05 1793 Butte Big Chico. Comment
  CAS-BOT-BC147199  Rubus parviflorus Clarence R. Quick 1952-7-1 52 -124 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  UCD166760  Rubus praecox Marcel Rejmanek 2016-10-6 2162 b Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CHSC48874  Rubus ursinus Vernon Oswald 1987-6-4 2953 Butte East arm of Paradise Reservoir near Doon Creek. 777 Comment
  CAS-BOT-BC363200  Rudbeckia occidentalis E. B. Copeland 1939-8-7 s.n. Butte Jonesville Comment
  CHSC102999  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico. 232 Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC64207  Rumex crispus S. C. Morey 1983-7-23 587 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC103146  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  UC204569  Rumex salicifolius var. transitorius A. A. Heller 1914-5-13 11396 Butte between Durham and Nelson (along Butte Creek); Butte Creek 53 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  CHSC52011  Sagina saginoides L. P. Janeway 1987-6-20 2271 Butte Along rd to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. Near the river. 1013 Comment
  CHSC30984  Sagittaria montevidensis subsp. calycina M. S. Taylor 1978-7-22 1852 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in ricefield. 30 Comment
  CHSC113369  Salix babylonica Lowell Ahart 2014-4-9 19348 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC103735  Salix exigua M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. Pennington quad. 19 Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS107337  Salix exigua Lowell Ahart 2005-4-2 11696 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
  UC1134894  Salix exigua var. hindsiana P. L. Johannsen 1936-8-12 980 Butte 3/4 mi nw of junction of Chico and Campbell Creeks; Paynes Creek Quadrangle Comment
  RSA0045621  Salix gooddingii Lowell A. Ahart 2012-4-17 17872 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
  CAS-BOT-BC104082  Salix hindsiana C. R. Ball 1915-6-4 1945 Butte old river channel near Biggs Comment
  CHSC9694  Salix laevigata E. L. Smith 1971-9-12 1066 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC1609154  Salix lasiandra subsp. lasiandra Vernon H. Oswald and Lowell Ahart 1993-6-22 5561 Butte gravel pit in Long Ravine w. of Stirling City (where Hendricks Canal tunnel dumps into creek) 975 Comment
  CAS-BOT-BC125177  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CDA38779  Salix lasiandra var. lasiandra L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  JEPS119616  Salix lasiolepis Lowell Ahart 2012-4-9 17830 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UC176160  Salix lasiolepis A. A. Heller 1913-4-5 Butte above Oroville (hills on n side of Feather River) Comment
  CAS-BOT-BC129576  Salix lasiolepis var. lasiolepis John Thomas Howell; Gordon H. True 1969-4-8 45487 Butte Near Pulga Bridge west of Pulga - Sierra Nevada 411 Comment
  CHSC102728  Salix lasiolepis var. lasiolepis 2009-6-19 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  RSA725027  Salix lasiolepis var. lasiolepis L. Ahart 2006-8-9 13147 Butte N side and 30 yards W of bridge across Stony Creek. Just N of Stonyford. 348 Comment
  CAS-BOT-BC125061  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  SBBG29040  Salix lucida subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  CAS-BOT-BC129490  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  UC567181  Salvia sonomensis A. E. Wieslander and J. E. Sowder 1933-6-24 326 Butte Keefer Ridge; Chico Quad. 304 Comment
  UCR190831  Salvia sonomensis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET13947659 Image available Salvia sonomensis A. A. Heller 1914-1 11410 Butte W slope of the Sierra near Forest Ranch; 2400 ft alt. 732 Comment
  SEINET10465310  Sambucus caerulea Mary Susan Taylor 1978-7-21 Taylor 1809 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  CAS-BOT-BC238616  Sambucus nigra subsp. caerulea Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  SEINET10972970  Sanicula bipinnata Mary Susan Taylor 1973-1 Taylor 36 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12121443  Sanicula bipinnata S. E. Bigbee 1984-1 35 Butte ca 50 yds S of Butte Creek & ca 320 yds W of Covered Bridge, 6.2 i ESE of Chico 121 Comment
  POM82754  Sanicula bipinnatifida C. C. Bruce 1897-05 2052 Butte Little Chico Comment
  SEINET12121650  Sanicula bipinnatifida L. Ahart, Ahart, P. 1984-1 4715 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC65442  Sanicula bipinnatifida var. flava L. P. Janeway 1995-6-19 4798 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC42094  Sanicula graveolens Lowell Ahart 1986-7-2 5345 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC11874  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1550 Comment
  CHSC29097  Sanicula tuberosa M. S. Taylor; J. D. Jokerst 1980-4-18 2521 Butte On e side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  CHSC31002  Sanicula tuberosa M. S. Taylor; R. Schlising 1980-7-6 3079 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows. 1341 Comment
  CHSC63954  Sanicula tuberosa B. Castro; L. Janeway 1994-4-21 510 Butte On Watson Ridge, on S-trending ridge S of USFS Rd 21N25A. 1054 Comment
  RSA4229  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1500 Comment
  UC398939  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville 1550 Comment
  SEINET3240023  Santalaceae R. L. Mathiasen 2010-1 1038 Butte Humboldt Summit; 2020 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  CHSC48091  Sarcococca ruscifolia L. P. Janeway 1990-1-21 3655 Butte CSUC campus. Along the east wall of Kendall Hall. 59 Comment
  UC474244  Sarcodes sanguinea H. F. Copeland 1929-6-11 Butte Jonesville Comment
  UC474270  Sarcodes sanguinea H. F. Copeland 1922-5-22 224 Butte Jonesville Comment
  CAS-BOT-BC213687  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico creek 76 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC100974  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  JEPS117892  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road 123 Comment
  CHSC33660  Sceptridium multifidum R. A. Schlising; K. Tarp 1981-7-28 4170 Butte N of Inskip in NE part of county, near junction of creek from Coon Hollow and West Branch of North Fork of Feather River. 1328 Comment
  UCD49965  Schoenoplectus mucronatus Bellue 1947-9-11 s.n. Butte Afton Road, near Biggs. Comment
  SEINET9318790  Schoenoplectus mucronatus Unknown 1996-9-5 13563 Butte Butte Comment
  SEINET4170990  Scirpus congdonii E. B. Copeland 1929-7-19 Butte Jonesville, 1550 Comment
  CHSC56806  Scirpus diffusus L. P. Janeway 1988-7-29 3130 Butte Meadow near Humbug Summit Road, 1.5 mi northeast of the Snag Lake dam. 1767 Comment
  CAS-BOT-BC110844  Scirpus microcarpus Herbert Faulkner Copeland 1920-8-1 167 Butte Tonesville meadow 1219 Comment
  JEPS110301  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET10467401  Scirpus robustus Mary Susan Taylor 1982-5-22 Taylor 4503 Butte T17N R2E nw/ne sec 19. Pennington quad. Graylodge Wildlife Refuge, near parking lot 6 on Rutherford Rd, e of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC39618  Scleranthus annuus subsp. annuus Lowell Ahart 1983-4-1 3915 Butte Found along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC30031  Scribneria bolanderi L. Ahart 1980-5-4 2212 Butte About 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  UCD80611  Scribneria bolanderi CNPS SN Foothill Team 2005-3-30 SNFN 0029 b Butte CDFG North Table Mountain Wildlife Area, Table Mt. Ecological Reserve, approximately 500 m E of the parking area off Cherokee Road. 381 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  CHSC38481  Scutellaria californica Vernon Oswald 1983-5-23 535 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 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
  JEPS108982  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  SEINET10499231  Scutellaria tuberosa Mary Susan Taylor 1979-5-4 Taylor 1995 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC23467  Sedella pumila J. R. Lee 1974-4-22 3 Butte 15 yards n of the Skyway roadside ca. 6 mi se of the Chico city limits. 152 Comment
  CHSC90984  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  UCD101975  Sedella pumila R. J. Goedl 1979-4-16 20 Butte 3.5 miles east of Highway 99 and Chico, 20 feet N of Skyway. 213 Comment
  SEINET10470981  Selaginella hansenii Lawrence P. Janeway 1984-10-8 Janeway 1179 Butte Pulga SW quad. T22N R5E SW 1/4 of sec. 7, 2000 feet. Along Hwy 70 above North Fork Feather River. On steep S-facing serpentine outcrop; open. 610 Comment
  CAS-BOT-BC363287  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  CHSC86443  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 95 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC113470  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  JEPS119561  Senecio sylvaticus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC38387  Senecio vulgaris Vernon Oswald 1982-12-19 30 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC41863  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS119600  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  SEINET10904979  Senecio vulgaris Mary Susan Taylor 1973-1 Taylor 41 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC38856  Setaria parviflora Vernon Oswald 1983-7-13 863 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Along the edge of the parking lot. 85 Comment
  CHSC23130  Setaria pumila M. S. Taylor 1975-10-3 929 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC26447  Setaria pumila P. Moyer 1971-10-24 48 Butte CSUC Campus. Creek area behind Archeology Bldg. 'B. 60 Comment
  CHSC31809  Sherardia arvensis L. Ahart 1970-4-4 37 Butte Peter Ahart Ranch, Honcut. Comment
  SEINET3449124  Sibara virginica Unknown 2003-5-9 10123 Butte Gridley, Gridley, about 3 miles by air southwest, along the southwest corner of a prune orchard on the north side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CHSC34961  Sidalcea calycosa R. A. Schlising 1979-6-4 3440 Butte S of Cohasset, off Cohasset Road. Comment
  RSA702150  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trial and Pine. Comment
  CHSC1042  Sidalcea diploscypha T. Morgue 1932-5-6 Butte Plains north of Chico. 76 Comment
  CHSC107239  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 65 Comment
  CHSC117406  Sidalcea diploscypha B. Castro 2009-5-5 1780 Butte Sacramento Valley. Ca 8 air mi NW of Oroville, 0.2 mi W of Hwy 99 and 0.75 mi S of Nelson Rd. 53 Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC33635  Sidalcea glaucescens R. E. Preston 1981-7-8 116 Butte 10 m w of Scotts John Creek, e of Humbolt Peak, ca. 6 km ne of Jonesville. 1930 Comment
  CHSC4685  Sidalcea hartwegii R. Carter 1966-4-30 388 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt.: growing 100 yds W of house on hillside. 243 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
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  UC726734  Sidalcea hirsuta A. A. Heller 1939-5-1 15388 Butte Feather River below Stirling (near the Cana Road, border of a pond along U.S. Highway #99E) Comment
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Mar 1 2016
  CDA30191  Silene antirrhina L. P. Janeway, David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills; Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. Comment
  CHSC104795  Silene antirrhina L. P. Janeway 2010-6-19 10026 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC48263  Silene antirrhina Vernon Oswald 1987-5-21 2916 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi ne of Hwy 32. 1173 Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  CAS-BOT-BC385884  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit east of Jonesville 2133 Comment
  CHSC101162  Silene gallica Lowell Ahart 2009-5-15 15690 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC389012  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown 548 Comment
  CHSC42228  Silene laciniata subsp. californica Beth Chambers 1986-4-18 15 Butte N on Cohasset Rd., 13.8 mi from Eaton Rd., Chico. 853 Comment
  CHSC31598  Silybum marianum L. Ahart 1975-6-5 786 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8161  Silybum marianum Dave Isle 1969-5-20 490 Butte Just E. of Chico Municipal Airport on E. side of Cohasset Rd. 59 Comment
  CHSC484  Sinapis arvensis G. Spurlock 1935-5-20 Butte Chico. Orchards and grainfields. 57 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
  JEPS43464  Smilax californica W. L. Jepson 1939-8-17 19471 Butte near Oroville; Feather River 45 Comment
  CHSC76422  Solanum americanum Lowell Ahart 1999-10-28 8319 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
  CHSC76963  Solanum parishii Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  SEINET7274374 Image available Solanum parishii A. A. Heller 1915-4-12 11814 Butte 14 mi NE of Chico near Rock Creek Comment
  SEINET10832641  Solanum umbelliferum Mary Susan Taylor 1981-4-5 Taylor 3502 Butte T21N R4E se sec 11, Berry Creek quad. W side of Dark Canyon Rd, ca. 3 mi s of its jct with Big Bend Rds, ca. 4 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1200 ft. 366 Comment
  CAS-BOT-BC365382  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Sierra Nevada at Chico Meadows 1219 Comment
  SEINET10474358  Solidago occidentalis Mary Susan Taylor 1975-10-3 Taylor 926 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CAS-BOT-BC364934  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte Sierra Foothills near Forest Ranch Comment
  CHSC30040  Soliva sessilis L. Ahart 1980-5-17 2280 Butte Along the edges of a wash, ca. 1/8 mi s of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  HSC93186  Soliva sessilis L. Ahart 1995-5-30 7575 Butte About 1/8 mi. N of Cherokee Rd., N Table Mountain, about 7 mi. N of Oroville 335 Comment
  UCD169794  Soliva sessilis L. P. Janeway 2011-4-26 10237 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave). 59 Comment
  CHSC115178  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte Gravel bar on the south side of the dry stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CAS-BOT-BC157207  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek Comment
  CAS-BOT-BC158897  Sorbus scopulina A. A. Heller 1928-7-25 14706 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC13807  Sorghum halepense J. G. Moore 1969-5-7 40 Butte Salem St. between 7th and 8th Sts. on e side of road. 60 Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  CHSC47699  Sparganium emersum subsp. emersum Lowell Ahart 1989-9-21 6399 Butte Along the margins of a apond, on a branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC20120  Spartium junceum M. S. Taylor 1975-4-26 524 Butte Scattered on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC98959  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC34999  Spergularia bocconi A. Ratcliff; R. A. Schlising 1980-4-6 3550 Butte About 5 mi S of Chico, near junction of Oroville-Chico Road and Neal Road. At roadside. Comment
  CHSC94064  Spergularia bocconi R. D. Fischer 2005-6-12 741 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at the east end Humboldt trailhead in Bidwell Park. Collection made off thin Tuscan mudflow in open area near trailhead. 407 Comment
  UC426923  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville 1500 Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CHSC51948  Spiranthes porrifolia L. P. Janeway 1988-7-29 3136 Butte Near W Br Feather River at crossing of rd into Coon Hollow. 1615 Comment
  CHSC51378  Sporobolus indicus Mary Bailey 1990-9-28 Butte Butte Community College, between Butte Campus Dr. and Staff Parking Lot 3. On an embankment along the road and in playing fields on campus. 91 Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC808  Stachys ajugoides var. rigida M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 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
  RSA0109093  Stachys pycnantha L. Ahart 2006-9-11 13286 Butte South edge of the North Fork of the Feather River, north side of Highway 760, 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
  SEINET10833472  Stellaria jamesiana Mary Susan Taylor 1978-7-19 Taylor 1753 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC48279  Stellaria longipes var. longipes Vernon Oswald 1983-7-19 883 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  JEPS119631  Stellaria media Lowell Ahart 2012-6-14 18186 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC38306  Stellaria nitens Vernon Oswald 1983-3-4 111 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  JEPS113238  Stellaria pallida Lowell Ahart 2007-3-12 13591 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  CHSC61773  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1993-8-31 5886 Butte Hwy. 70 at Cresta Rest (near the Butte-Plumas county line), along the PG and E service road to the falls on Bear Ranch Creek. On a bank near the bottom of the road. 457 Comment
  SEINET10827386  Stipa lettermanii Edwin B. Copel 1929-7-16 Copeland 342 Butte Jonesville; bunch forming, on light soil in open brush, moist in spring. 1550 Comment
  SEINET10508405  Stipa stillmanii Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4178 Butte T25N R4E sw 1/4 sw 1/4 sec. 33. Paradise NE quad. Both sides of the Skyway 1.8 mi S of Inskip. Yellow Pine Forest. 4100 ft. 1250 Comment
  SEINET10480708  Streptanthus Mary Susan Taylor 1980-7-6 Taylor 3074 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  HSC96684  Streptanthus diversifolius L. Ahart 2006-5-3 12555 Butte 0.25 mi. N of the parking area, cow chute, and Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 403 Comment
  SEINET11985723  Streptanthus diversifolius P. L. Venable 1978-1 19 Butte 6 mi N of Oroville, 1 mi W of Cherokee Rd 305 Comment
  JEPS98478  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte 3 mi SE of Paradise (below high water line of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 271 Comment
  CAS-BOT-BC87386  Streptanthus longisiliquus Lowell Ahart 1983-9-17 4434 Butte Sierra Nevada. About 2.5 miles south of Stirling City. 1100 Comment
  CHSC106599  Streptanthus longisiliquus Matt Simenc; Sarah Starkey, Tim Hanson 2010-7-8 Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles southeast of Concow Road, northern end of Rocky Ridge. 993 Comment
  CAS-BOT-BC87437  Streptanthus polygaloides Lowell Ahart 1983-6-30 4178 Butte About 1.5 mile northeast of Concow Res. 550 Comment
  CAS-BOT-BC87440  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte South of Serpentine Point and above Highway 70. 518 Comment
  CDA13890  Streptanthus polygaloides G. F. Hrusa, T. D. Wilfred 1997-5-8 13747 Butte Sierra Nevada; On slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UCD164226  Streptanthus polygaloides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 303 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 314 Comment
  RSA636061  Streptanthus tortuosus Michael A. Vincent, Ethan H. Freid, Don Banks 1998-4-5 8101 Butte Table Mountain. Portion south of Beatson Hollow. Comment
  CHSC57124  Streptanthus tortuosus var. suffrutescens L. P. Janeway 1991-5-1 3923 Butte Dark Canyon Road ca 1 1/4 mi south of Hwy 70. Road-cut bank. 518 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC61357  Streptopus amplexifolius var. americanus Lowell Ahart 1993-7-22 7088 Butte West of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC62799  Streptopus amplexifolius var. americanus B. Castro 1993-8-26 500 Butte Ca. 0.25 mi SW of Four Trees, off USFS Rd 23N15 ca. 0.6 mi S of its jcn with Four Trees Rd (USFS Rd 23N28). 1463 Comment
  SEINET10475187  Stylocline filaginea Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4854 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC27935  Styrax officinalis var. redivivus M. S. Taylor; J. T. Howell 1976-5-3 1105 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC37654  Styrax officinalis var. redivivus T. B. Devine 1981-8-25 757 Butte Beside Hwy 70 near Bear Ranch Creek, along N fork of Feather River near Cresta. 426 Comment
  UCSB57880  Suaeda calceoliformis Oswald, Vernon 1989-10-18 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC2409  Swertia albicaulis var. nitida R. Carter 1965-6-21 260 Butte Found 3.2 mi. S of Mountain House on Oroville-Quincy Rd., on W side of road, on steep bank beside road. 914 Comment
  SBBG119858  Swertia albicaulis var. nitida L. Ahart 2003-7-20 10435 Butte S side of Bean Crk Rd, ca. 1/8 mi N of Little Bald Rock, ca. 2 air mi SE of Brush Crk 987 Comment
  UC426982  Symphyotrichum bracteolatum E. B. Copeland 1900-1-1 Butte Jonesville, in and near springs 1500 Comment
  CHSC28389  Symphyotrichum chilense J. D. Jokerst 1979-10-12 370 Butte Along Big Chico Cr., ca 1/4 mi NE of end of Upper Bidwell Park Rd. 213 Comment
  CAS-BOT-BC97695  Symphyotrichum chilense Lowell Ahart 1985-10-8 5195 Butte on the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, 60 Comment
  CHSC65886  Symphyotrichum lanceolatum var. hesperium Vernon H. Oswald 1996-4-20 7401 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacra-mento Valley. 32 Comment
  UCD73065  Taeniatherum caput-medusae 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
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  CHSC112249  Tamarix parviflora Lowell Ahart 2013-4-20 18547 Butte In Wilson Creek, about 40 yard southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 mile (air) northeast of Honcut. 49 Comment
  JEPS14512  Tauschia hartwegii Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5606 Butte along Oroville-Concow road 0.9 mi below its junction with Yankee Hill Road 521 Comment
  CHSC73734  Tauschia kelloggii B. Castro 1997-4-30 726 Butte Ca 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On n edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Qunicy hwy, at base of road cut. 1066 Comment
  RSA32873  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Butte County: Mosquito Creek betw Appleton and Coutolence. 610 Comment
  CHSC52078  Teucrium fruticans B. Castro 1988-4-10 258 Butte At extreme e end of parking lot of Five Mile Recreation Area along s side of Big Chico Ck. 83 Comment
  CHSC45804  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-5 324 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek; near stream. 1487 Comment
  CHSC111386  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 A 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
  CAS-BOT-BC88216  Thysanocarpus curvipes Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC88232  Thysanocarpus curvipes James Jokerst 1985-3-24 2170 Butte Near Serpentine Point. 547 Comment
  CHSC90236  Thysanocarpus curvipes Jody Henderson 1989-3-22 2 Butte 200 yds n of Rock creek, Hwy 99 to Meridian Rd to Kilkare ln, 6 mi. n of Chico, 0.25 se of Kilkare ln. 72 Comment
  POM95119  Thysanocarpus curvipes var. curvipes C. C. Bruce 1897-04 1946 Butte [No locality information provided] Comment
  CHSC2517  Thysanocarpus curvipes var. elegans W. Fitzwater 1959-3-10 Butte Along Shasta Hwy. Comment
  CHSC65491  Thysanocarpus radians Ron P. Garcia 1995-3-31 1 Butte Ca. 100 ft w of Rabe Rd, ca. 1.1 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  UCD73330  Thysanocarpus radians Chuck Hughes 2008-3-18 21 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  SEINET11991223  Thysanocarpus radians Unknown 1890-1 s.n. Butte no further locality Comment
  SEINET10479950  Tilia americana Mary Susan Taylor 1975-5-6 Taylor 553 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  RSA700391  Tofieldia glutinosa subsp. occidentalis Lowell Ahart 2004-8-2 11322 Butte The start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 4 miles (air) northeast of Stirling City 1690 Comment
  UC203645  Tofieldia occidentalis subsp. occidentalis A. A. Heller 1914-8-7 11654 Butte Butte Meadows 1219 Comment
  CHSC77474  Torilis arvensis subsp. arvensis Tim Stofer 1997-4-22 23 Butte On east side of trail 100 ft. past shooting range of the South RimTrail off South park Dr. in upper Bidwell Park. 76 Comment
  CHSC31895  Torilis arvensis subsp. purpurea L. Ahart 1977-6-3 1409 Butte Along banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  POM133444  Torilis nodosa E. B. Copeland 1903-5-2 3018 Butte Chico Comment
  SEINET10872332  Torreya californica Mary Susan Taylor 1975-2-23 Taylor 389 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CAS-BOT-BC239830  Torreyochloa pallida var. pauciflora Vernon Oswald; Lowell Ahart 1987-7-1 3065 Butte Lily Pond located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville 1813 Comment
  CHSC101336  Toxicodendron diversilobum Lowell Ahart 2009-4-22 15565 Butte West side of Guardians Trail, about 50 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
  UC449714  Toxicodendron diversilobum Mrs. R. M. Austin May, 1896 97 Butte Little Chico Creek Comment
  CHSC75562  Toxicoscordion paniculatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13744 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Sierra Nevada. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment