Search Results — 2000 specimen records retrieved (1606 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC88614  Abies concolor H. Gray 2003-6-3 Butte Plumas National Forest. Parking Lot, Bald Rock Trail. 792 Comment
  CHSC29103  Acer circinatum M. S. Taylor; J. D. Jokerst 1980-4-27 2557 Butte Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1 1/2 mi se of Nimshew. 609 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  UC726475  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  CHSC111727  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  RSA0045589  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 63 Comment
  CHSC40465  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC210638  Achnatherum lemmonii Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  CHSC49582  Achnatherum lemmonii Vernon Oswald 1985-6-3 1800 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  CHSC49579  Achnatherum occidentale subsp. californicum Vernon Oswald 1985-7-2 1873 Butte Hwy 32 2.3 mi s of Lomo. 1133 Comment
  UC600788  Achnatherum occidentale subsp. californicum H. F. Copeland 1932-8-17 Butte at the summit Jonesville 2000 Comment
  JEPS94313  Achnatherum occidentale subsp. occidentale Lowell Ahart 1997-8-1 7790 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, e of Little Kimshew Creek, e of Snow Meadow) 1524 Comment
  RSA0037019  Acmispon americanus var. americanus Lowell A. Ahart 2013-11-18 19282 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  UCD103796  Acmispon americanus var. americanus A. A. Heller 1914-7-24 11625 Butte Forest Ranch. 731 Comment
  CHSC40281  Acmispon glaber Lowell Ahart 1985-5-31 5037 Butte About 25 feet below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Launch Area, about 1 mile west of the Ensterprise Bridge, north-east of Oroville. 274 Comment
  CHSC31098  Acmispon parviflorus Stephen M. Turek 1980-4-18 16 Butte Ca. 1.0 yd n of Cohasset Road, 4.1 mi e of Keefer Road, 5.6 mi e of Chico. 152 Comment
  CHSC50040  Acmispon strigosus Lowell Ahart 1990-4-15 6455 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC52673  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 348 Butte NW of Philbrook Reservoir, near streamlet. 1798 Comment
  UC699686  Actaea rubra H. F. Copeland 1932-8-16 Butte Butte Creek Comment
  UC1127710  Adenostoma fasciculatum H. A. Jensen 1934-10-26 391 Butte Cohasset Ridge (Keefer Ridge on map), Hd. Maple Branch Mad Creek Chico Quad., Cohasset Ridge (Keefer Ridge on map) Comment
  CHSC101750  Adiantum jordanii Lowell Ahart 2009-5-23 15742 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 Highwat 32, about 10 miles northeast of Chico. 234 Comment
  SEINET10470272  Adiantum jordanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4172 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
  JEPS98705  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CAS-BOT-BC202591  Aesculus californica Lowell Ahart 1983-6-26 4112 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  UCD136670  Aesculus californica L. E. Delight 1973-1-5 24 Butte ca. 160 yards east from Centennial Ave., ca. 1 mile east of intersection of Manzanita Ave. and Centennial Ave., Chico. Comment
  CHSC6008  Aesculus carnea M. MacArthur 1968-6-19 259 Butte Chico State College. At main entrance to Auditorium. 60 Comment
  CHSC31934  Ageratina occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1038 Butte Top of Humboldt Peak, ca. 200 met N of summit, northern most portion of Butte Co. 2133 Comment
  CAS-BOT-BC29616  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  SEINET10475107  Agoseris heterophylla Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4866 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC32364  Agoseris retrorsa J. D. Jokerst 1980-4-7 564 Butte E of the junction of Upper Rocky Honcut Cr and Sweedes Flat Rd. ca 110 m E of the road. Comment
  RSA0036990  Agrimonia gryposepala Lowell A. Ahart 2013-7-2 18815 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SACT000053  Agropyron laeve Herbert Copeland 1935-7-25 Butte Comment
  CHSC116333  Agrostis avenacea Lowell Ahart 2015-10-20 20564 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  CAS-BOT-BC127368  Agrostis exarata Lowell Ahart 1982-5-28 3440 Butte Sierra Nevada. East of North Honcut Creek near the Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC127372  Agrostis exarata John Thomas Howell 1955-6-15 30475 Butte Paradise. 518 Comment
  UC1609047  Agrostis exarata Lowell Ahart 1993-7-23 7092 Butte about 6 air mi ne Feather Falls (on the w side of Fall River, about 100 yds w of the bridge across Fall River) 1036 Comment
  CHSC51030  Agrostis exarata var. monolepis Lowell Ahart 1990-7-15 6560 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC96787  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  JEPS107754  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, 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 358 Comment
  SEINET10968290  Agrostis microphylla var. hendersonii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4167 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC42906  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles south-west of Forbestown. 670 Comment
  CHSC46688  Agrostis pallens V. Oswald; L. Ahart 1989-8-15 3947 Butte Metavolcanic outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. 1920 Comment
  CHSC28544  Agrostis stolonifera M. S. Taylor 1978-7-18 1676 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
  JEPS107519  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  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
  UC1609046  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte about 6 (air) mi nw Feather Falls (about 100 yds w of the bridge across Fall River, w side of river); Fall River 1036 Comment
  CHSC105518  Agrostis variabilis Lowell Ahart 2010-9-28 17257 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
  UCD53785  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte locally abundant at the summit east of Jonesville. 2133 Comment
  SEINET10497817  Ajuga reptans Mary Susan Taylor 1975-4-6 Taylor 434 Butte Chico. 52 Comment
  CHSC21380  Albizia julibrissin M. S. Taylor 1975-6-22 780 Butte On center w side of 1200 block of Arcadian, Chico. Comment
  CHSC97373  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  CHSC49471  Allium amplectens Vernon Oswald 1988-6-13 3375 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  UC1299745  Allium amplectens Freed W. Hoffman 1949-5-14 2805 Butte nw Oroville (summit of Table Mountain); Table Mountain Comment
  CAS-BOT-BC460375  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1898 Butte Fields near Chico Comment
  CAS-BOT-BC460741  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10472029  Allium bolanderi Mary Susan Taylor 1982-5-2 Taylor 4391 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC28505  Allium campanulatum M. S. Taylor; J. Jokerst 1979-7-21 2153 Butte On Humboldt Peak, on Humboldt Summit. 2154 Comment
  SEINET176932  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  CHSC101176  Allium membranaceum Matt Brown; Jamie Tuitele-Lewis 2005-6-3 Butte Northern High Sierra Nevada. East side of Cedar Creek and about 200 m uphill from it; 2.0 km northwest of Arch Rock Tunnel. UTM Zone 10: 4414000N, 636100E. 1280 Comment
  CAS-BOT-BC472971  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CHSC115403  Allium obtusum var. obtusum M. Rogers 2013-4-16 Butte On the summit of Big Bald Rock. 944 Comment
  CHSC9547  Allium peninsulare J. Barber 1968-4-6 22 Butte Ca. 2 mi e of Chico Rod and Gun Club at Horseshoe Lake on Upper Bidwell Park Rd. 60 Comment
  SEINET12048118  Allium sanbornii M. Ownbey, Ownbey, G. B. 1946-1 2948 Butte Hwy. 24, 21 mi NE of Oroville, just beyond Yankee Hill Rd Comment
  CHSC33261  Allium sanbornii var. sanbornii R. A. Schlising 1980-9-11 3990 Butte 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CAS-BOT-BC262  Allocarya austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  SEINET10496942  Allophyllum divaricatum Lowell Ahart 1984-6-8 Ahart 4664 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CAS-BOT-BC170911  Alnus rhombifolia Javier Penalosa 1962-6-18 2440 Butte Near confluence of French and Peavine Crks. 609 Comment
  UC436297  Alopecurus aequalis E. B. Copeland August, 1930 Butte above Jonesville Jonesville 1650 Comment
  CHSC59038  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte On the south side of the Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC98807  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte 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. 217 Comment
  JEPS98447  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  UCD169922  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte North Table Mountian, about 1/4 mile south of the parking area. About 4 1/2 miles (air) northeast of Oroville. 371 Comment
  SEINET10511195  Alopecurus saccatus M. E. Banning 1969-4-18 Banning 76 Butte Table Mt., 1/2 mi. from Ore. City junction. 488 Comment
  CHSC46329  Amaranthus albus Lowell Ahart 1989-5-23 6258 Butte About 1 mile north-west of Bangor, along the edges of Avocado Road, about 1/2 west of the Oroville Bangor Highway. 213 Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD97225  Amaranthus hybridus T. Gantenbein 1999-8-11 PDR11 98787 Butte Richvale. Comment
  CHSC51347  Amaranthus powellii Vernon Oswald 1990-9-22 4453 Butte Growing in median along the Esplanade between 10th and 11th avenues. 59 Comment
  CHSC43584  Amaranthus rudis Vernon Oswald 1987-6-12 2990 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC64064  Ambrosia artemisiifolia B. Castro; L. P. Janeway, M. Halterman, C. Pidgeon 1987-10-17 246 Butte At Graylodge Waterfowl Management Area. Ca 0.25 mi NW of the headquarters. 21 Comment
  CAS-BOT-BC55584  Ambrosia psilostachya Lowell Ahart 1982-10-11 3859 Butte Gray Lodge, south-west of Gridley 35 Comment
  POM220123  Amelanchier pallida H. F. Copeland 1928-8-18 459 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  CHSC38544  Ammannia coccinea Vernon Oswald 1983-7-8 838 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  SEINET3450928  Ammannia coccinea Unknown 2003-6-23 10300 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  JEPS110076  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CDA42886  Amorpha californica L. Ahart 2012-5-12 18027 Butte North side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC213949  Amsinckia John Thomas Howell 1976-4-2 51553 Butte About 2 miles southeast of Chico 60 Comment
  UC1530703  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) 100 Comment
  RSA0089739  Amsinckia lycopsoides L. P. Janeway 2006-6-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road, 2.4 km northeast of Bruce Road. 149 Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  CHSC82403  Anagallis arvensis Lowell Ahart 2002-5-7 9632 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC82568  Anagallis arvensis Tara Morgan 2002-5-7 59 Butte Within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 549 Comment
  SEINET10507169  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC28609  Andropogon glomeratus var. scabriglumis M. S. Taylor 1977-11-12 1532 Butte N side of Diversion Dam area, n side of Upper Bidwell Park Rd. Comment
  JEPS99034  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile NW of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC45415  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservoir, about 2 1/4 miles north-west of Strawberry Valley. 1005 Comment
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  CHSC48127  Antennaria argentea V. Oswald; L. Ahart 1988-6-17 3396 Butte Hillside at the N side of the dam at Lost Creek Reservoir. 1005 Comment
  CAS-BOT-BC84690  Anthemis cotula Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC31891  Anthriscus caucalis L. Ahart 1977-5-4 1350 Butte On moist soil in shade of old shearing barn. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS122257  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  CHSC38682  Antirrhinum cornutum Vernon Oswald 1983-7-3 803 Butte Upper Bidwell Park, Chico, on the rim overlooking Sycamore Creek Canyon ca. 200 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC48969  Antirrhinum cornutum Vernon Oswald 1986-7-22 2216 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. 1097 Comment
  CHSC44516  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1988-7-3 6122 Butte Along the nort side of the dirt road, about 1/10 miles north-west of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  CHSC61215  Aphanes occidentalis Vernon H. Oswald; Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  SEINET10873873  Aralia californica Mary Susan Taylor 1977-7-15 Taylor 1421 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  RSA325115  Arceuthobium campylopodum M. S. Taylor 1975-9-19 911 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  UC600692  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CHSC3261  Arceuthobium occidentale M. L. Hillier 1966-4-23 Butte About 9.5 miles e. of C.S.C. admin. building. Chico. Comment
  RSA632991  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27463 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51917  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51568 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  CAS-BOT-BC24413  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek e. of Chico, especially on the n. slope. Comment
  SBBG128407  Arctostaphylos manzanita subsp. manzanita L. Ahart, J. Dittes, S. Green 2009-1-17 15468 Butte N side of Humboldt Trail, ca. 50 yards S of Guardian Rock Trail, upper Bidwell Park, ca. 300 yards W of Hwy 32 330 Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  CAS-BOT-BC24295  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte About 2 mi. w. of Forest Ranch. Comment
  UC725911  Arctostaphylos mewukka A. A. Heller 1942-3-22 16408 Butte two mi above Cohassett School House Comment
  UC726642  Arctostaphylos mewukka A. A. Heller 1942-1-29 16356 Butte on State Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  UC726686  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte on Pentz-Magalia road three mi below Paradise Comment
  SEINET10973495  Arctostaphylos mewukka Lowell Ahart 1985-2-17 Ahart 4840 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  UC481536  Arctostaphylos patula H. F. Copeland 1920-5-22 223 Butte Jonesville Comment
  UCD53437  Arctostaphylos patula J. I. Mallory 1970-8-20 376 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1432 Comment
  RSA381139  Arctostaphylos truei J. T. Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise. 609 Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48294  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51108 Butte Paradise - Skyway just ne. of Billie Road. 609 Comment
  CHSC32651  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3430 a Butte Ridge NNW of Sawmill Peak, off Jordan Hill Rd, ca. 1 air mi NE of Magalia. 701 Comment
  CHSC32655  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3424 Butte W side of West Branch Feather River, ca. 100 ft S of Ponderosa Way bridge crossing, ca. 1 mi NE of Magalia. Label states: T23N R5W nc 1/3 sec 30. 487 Comment
  RSA13427  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 mils from Chico. Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  CDA31420  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville Comment
  CHSC115422  Aristolochia californica Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail. 89 Comment
  SFV11167  Aristolochia californica M. L. Vincent 1964-4-8 508 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  CAS-BOT-BC82412  Arnica discoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC398950  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC118071  Arnica fulgens L. P. Janeway 2016-5-16 12006 Butte Modoc Plateau. Devils Garden area; junction of Road 46N02 at Road 47N09/73/181; 2.0 air-km east of Green Spring Reservoir. 1585 Comment
  CHSC100875  Arnica longifolia L. P. Janeway; Linus Gog 2008-7-18 9436 Butte Northern High Sierra Nevada. Along Philbrook Creek betweeen the east end of Philbrook Reservoir and Concow Road. Comment
  CHSC50814  Arnica longifolia Vernon H. Oswald; Lowell Ahart 1990-7-19 4370 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  CHSC45632  Arnica mollis Vernon H. Oswald 1985-7-2 1878 Butte Scotts John Creek 0.6 mi N of the road connecting Humboldt and Humbug Rds. 1780 Comment
  UC492750  Arnica mollis H. F. Copeland 1927-9-4 1122 Butte Jonesville 1524 Comment
  CAS-BOT-BC146273  Arrhenatherum elatius var. elatius Lowell Ahart 1983-6-30 4189 Butte On the west side of the west Branch of the Feather River, about 3 miles southeast of Stirling City. 1100 Comment
  CHSC20901  Artemisia douglasiana M. S. Taylor 1975-8-31 894 Butte Ca. 50 ft S of Humboldt Rd, on Ernies Island in Butte Creek, ca. 1/2 mi E of Butte Meadows. 609 Comment
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of lake Oroville, about 1/4 mile north east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  UC600722  Artemisia douglasiana H. F. Copeland 1927-9-3 1114 Butte Jonesville 1524 Comment
  CAS-BOT-BC400635  Asarum hartwegii A. A. Heller 1919-5-18 13174 Butte Mosquito Creek between Appleton and Coutelence Comment
  UC176365  Asarum hartwegii A. A. Heller 1913-6-7 10825 Butte West Branch of the North FOrk of the Feather river near Stirling Comment
  CHSC33905  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Creek crossing 20N15 Lumpkin Ridge Rd, 1.9 mi w of Golden Trout Crossing on south fork Feather River, ca. 5 air mi e of Feather Falls. 1097 Comment
  CHSC44084  Asclepias cordifolia L. P. Janeway 1987-7-5 2464 Butte Along the road to High Lakes, 5.3 mi from the Skyway (Philbrook Rd). 1844 Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC38245  Aspidotis californica Vernon Oswald 1982-7-23 32 Butte Bidwell Park, Chico, along Yahi Trail w of Brown's Hole. 182 Comment
  CAS-BOT-BC65908  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  SEINET10475334  Aster breweri Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4212 Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  SEINET10475114  Aster eatonii Mary Susan Taylor 1979-9-28 Taylor 2200 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET10474436  Aster oregonensis subsp. californicus Lowell Ahart 1985-8-15 Ahart 5165 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC33759  Aster radulinus Robert A. Schlising 1979-9-6 3485 Butte Near jct Hwy 32 and Forest Ranch Road above Forest Ranch. Comment
  HSC93425  Astragalus gambelianus L. Ahart 1995-5-30 7577 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
  CAS-BOT-BC192801  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Summit of Table Mountain 304 Comment
  CHSC12922  Astragalus pauperculus J. A. Roberts 1973-4-4 3 Butte Ca. 200 yds n of Upper Bidwell Park Road, and 0.25 mi e of East Ave., Chico. 60 Comment
  POM45819  Astragalus tener var. ferrisiae C. C. Bruce 1898-05 2432 Butte Sacramento River. Comment
  CHSC108316  Athyrium filix-femina var. cyclosorum Lowell Ahart 2011-8-19 17643 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC69103  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UCSB63847  Athyrium filix-femina var. cyclosorum Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC10741  Athysanus pusillus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC43812  Athysanus pusillus Lowell Ahart 1978-4-19 1649 Butte Along the trail to Feather Falls, about 3 miles north of the town of Feather Falls. 548 Comment
  POM219647  Athysanus pusillus H. F. Copeland 1928-4-3 431 Butte Canyon of Butte Creek. Comment
  CHSC37114  Atriplex cordulata L. Ahart; M. S. Taylor 1982-10-11 3861 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC1191306  Atriplex heterosperma Herbert L. Mason, Verne Grant 1946-8-14 13034 Butte canal near big pond Sacramento Outing Club (Butte Sink); canal nr big pond on Sacramento Outing Club, Butte Sink Comment
  SEINET10479064  Atriplex rosea Mary Susan Taylor 1977-10-10 Taylor 1524 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CHSC92531  Avena barbata Lowell Ahart 2005-12-11 12514 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
  SEINET263348  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Ca 1/12 miles NW of the West Branch Bridge across Lake Oroville; near the end of the dirt road that leads to Lake Orovil 271 Comment
  SEINET10514062  Avena fatua Lowell Ahart 1981-5-24 Ahart 2835 Butte In a farmed field planted to Sierra Oats, on a dry red gravelly soil, on Peter Ahart Ranch, ca. 2.5 mi NE of Honcut. 50 Comment
  JEPS102437  Azolla filiculoides Lowell Ahart 2011-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  CHSC59166  Azolla microphylla Vernon H. Oswald 1992-9-21 5218 Butte SE corner of Llano Seco, in a ditch crossing Seven Mile Lane ca. 0.25 mi N of Nelson West Rd. 30 Comment
  CAS-BOT-BC98006  Baccharis pilularis Lowell Ahart 1975-1-25 s.n. Butte Near Princeton Ferry 30 Comment
  CAS-BOT-BC98185  Baccharis salicifolia Gordon H. True 1971-4-8 6450 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley. 24 Comment
  CHSC113982  Bacopa rotundifolia Lowell Ahart 2014-10-14 19882 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  UCD129525  Balsamorhiza deltoidea W. R. Powell 1968-5-17 1515 Butte 3.5 miles east-northeast of Lake Wyandotte and 3 miles north of Rackberby. 466 Comment
  CAS-BOT-BC27831  Balsamorhiza macrolepis H. E. Brown 1897-4-15 208 Butte Near Clear Crerek 53 Comment
  CAS-BOT-BC106428  Balsamorhiza sagittata A. A. Heller 1915-6-16 12026 Butte Summit of the Sierra Nevada above Jonesville, on the summit of a ridge 2133 Comment
  CHSC42510  Barbarea verna Lowell Ahart 1987-5-6 5565 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC34114  Bassia hyssopifolia L. Ahart 1981-9-10 3148 Butte Along the edge of a ditch near the entrance to the Graylodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw of Gridley. 35 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
  CHSC76277  Bergia texana Lowell Ahart 1999-9-21 8283 Butte 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 9air) southwest of Chico. 32 Comment
  JEPS110451  Bergia texana Lowell Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CDA38795  Blennosperma nanum var. nanum L. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC39541  Boechera arcuata Lowell Ahart 1983-5-28 4017 Butte Found growing at the over-look to Feather Falls, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. 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
  CHSC35759  Boechera rectissima R. E. Preston 1982-6-15 301 Butte At e margin of meadow; Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CDA3607  Brassica napus L. Ahart 2001-5-1 8739 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC127678  Brickellia greenei John Thomas Howell 1959-9-26 35089 A Butte On serpentine at Pulga Bridge, Feather River Canyon 417 Comment
  CHSC49509  Briza maxima Vernon Oswald 1985-5-20 1765 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. 243 Comment
  JEPS117714  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  CDA5622  Briza minor L. Ahart 2005-4-14 11710 -A Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC41138  Briza minor R. L. Ondricek-Fallscheer 1982-5-25 134 Butte On ne side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 182 Comment
  UC203848  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 mi n Oroville (along streams and low places) Comment
  POM204990  Briza minor E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  UCD143642  Brodiaea californica Louis K. Mann 1957-5-26 s.n. Butte Collected 11.6 mi. S. of Chico on 99E near culvert B711+90 Butte County. Comment
  CHSC88078  Brodiaea californica var. californica R. D. Fischer 2004-6-6 163 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). At stream crossing on Big Chico Creek, 300 ft n. of gated property line of Bidwell Park. Off of Chico Canyon Road (name on older maps), e. side of creek. 213 Comment
  POM109907  Brodiaea californica var. californica C. C. Bruce 1897-05 2126 Butte [No locality information provided] Comment
  SEINET10533756  Brodiaea congesta H. E. Brown 1897-5-1 Brown 211 Butte Collected near Clear Creek. Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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Jun 17 2014
  CAS-BOT-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  CAS-BOT-BC484555  Brodiaea minor Lowell Ahart 1984-6-10 4686 Butte Along the edge of Hurletojn Swedes Flat Road, about 2 miles south of Forbestown Road, about 12 miles south-east of Oroville, California 450 Comment
  CHSC116566  Brodiaea nana B. Castro; Robin Carter 2016-4-14 2128 Butte Sacramento Valley. Ca 1.9 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.2 mi SSW of the Oriville Airport, off N edge of SE portion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  CHSC21265  Brodiaea nana M. S. Taylor 1975-5-1 376 Butte Ca. 1/2 km w of junc of Clark and Pentz Rds, ca. 17m se of Chico. 91 Comment
  SEINET10472700  Brodiaea pulchella Mary Susan Taylor 1975-3-10 Taylor 408 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
  CAS-BOT-BC484590  Brodiaea purdyi H. C. Cantelow 1940-5-10 3913 Butte s.w. of Oroville Hwy 24 Comment
  CHSC102183  Brodiaea sierrae George W. Hartwell 2009-6-6 Butte Concow Road. Plants abundant on serpentine ridge approximately 3-4 miles above Concow Reservoir. 860 Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  CAS-BOT-BC156029  Bromus diandrus H. E. Brown 1897-4-15 199 Butte Near Clear Creek. 53 Comment
  JEPS115956  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CHSC74153  Bromus laevipes B. Castro; E. Hubert 1996-7-16 685 Butte Black Jack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on slope of recently burned area at edge of forest. Near drainage. 1158 Comment
  CHSC87898  Bromus laevipes Lowell Ahart 2004-6-2 10988 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  UCR143553  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville 1524 Comment
  CAS-BOT-BC162206  Bromus orcuttianus Lowell Ahart 1987-7-8 5796 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, soutehast of Pulga. 1280 Comment
  JEPS110320  Bromus orcuttianus Lowell Ahart 2006-7-25 13054 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
  UC1609036  Bromus orcuttianus Lowell Ahart 1993-7-22 7072 Butte about 5 1/2 air mi ne of Feather Falls (on w side of dirt rd about 1/2 mi nw of Camp 18) 1097 Comment
  CAS-BOT-BC161962  Bromus rubens John Thomas Howell; Gordon H. True 1967-6-11 42561 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  CHSC50850  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1990-7-19 4366 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 2011 Comment
  CHSC111721  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC65211  Bromus tectorum Lowell Ahart 1995-5-30 7585 Butte Along the edge of the dirt road, south of Beatson Hollow, about 3/4 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  JEPS118487  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 1009 Comment
  CHSC1359  Calandrinia ciliata var. menziesii E. Dolittle 1929-2-26 Butte Near Chico. 57 Comment
  CHSC30891  Callitriche heterophylla var. bolanderi J. D. Jokerst 1979-3-20 1150 Butte Top of North Table Mt., ca 0.5 mi N of the jct. of Cherokee Rd and the E edge of Mt. 396 Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 Comment
  CAS-BOT-BC487816  Calochortus coeruleus Lowell Ahart 1970-5-19 s.n. Butte Along Doon Grade, near Paradise 914 Comment
  CHSC25013  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC3284  Calochortus luteus M. S. Hillier 1966-5-7 Butte 1/4 mile n. of covered bridge on humbug rd. Comment
  CHSC7131  Calochortus luteus J. Borgstrom 1969-5-2 22 Butte Ca 6 mi s of Chico on 99E, 20 ft. off of w side of highway. 47 Comment
  CHSC75414  Calochortus luteus Jennifer Slater 1997-4-27 38 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC492566  Calochortus minimus H. F. Copeland 1931-9-6 1513 Butte Jonesville 1524 Comment
  CHSC67408  Calochortus monophyllus James D. Jokerst; R. A. Schlising 1985-4-8 2214 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  SJSU9969  Calochortus monophyllus G. L. Baker 1968-5-4 71 Butte near Nimshew N of Megalia 670 Comment
  SEINET3884980  Calochortus monophyllus Kathy Corson 1967-4-6 3 Butte 10 miles east of Chico on Highway 32.; 0 Comment
  CHSC116973  Calochortus tolmiei Danielle Gee 2013-4-27 Butte Detlow Road, about 20 yards off Hwy 70, along road cut. 642 Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC40083  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Summit between the West Branch and North Fork of the Feather River on Highway 324, in the Arid Transition Life Zone. Comment
  CHSC76967  Calochortus tolmiei Margie Collins 1894-4-1 Butte Forbestown. Comment
  CAS-BOT-BC175756  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville, in meadows by North Willow Creek 1550 Comment
  CHSC53699  Caltha leptosepala var. biflora Kirsten Tarp 1983-8-12 346 Butte Philbrook Reservoir. Near streamlet in meadow. 1706 Comment
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  CAS-BOT-BC273290  Calycadenia fremontii G. D. Carr 1978-7-7 792 (1978) Butte NE of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave 232 Comment
  UC1876193  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  UC365835  Calycadenia fremontii unknown 1879-8-1 Butte near Chico Comment
  CAS-BOT-BC106097  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CAS-BOT-BC123537  Calycadenia oppositifolia Charles Christopher Parry 1882-1-1 s.n. Butte Chico Comment
  CHSC288  Calycadenia oppositifolia M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC75348  Calycadenia oppositifolia Lowell Ahart 1999-6-12 8091 Butte West of the split in the dams and on both sides of the poor dirt road, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  JEPS98426  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  UCD129788  Calycadenia oppositifolia L. P. Janeway 1988-5-29 2701 Butte Little Chico Creek, ca. 2 air miles south of Ten Mile House. 243 Comment
  CHSC26701  Calycadenia truncata M. S. Taylor; M. Hayes 1977-8-16 1453 Butte On N side of Clear Creek next to the newly built bridge (population partially destroyed by the construction), Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  UC913063  Calycadenia truncata David D. Keck and J. Clausen 1935-6-25 3778 Butte 2.2 mi s, on road to Yankee Hill Flea Valley Comment
  CAS-BOT-BC275393  Calycadenia truncata var. truncata J. D. Jokerst; M. S. Taylor 1979-10-13 388 Butte Jordan Hill Road (Ponderosa Way), 2.8 miles N of junction with Concow Creek, ca. 4 miles NE of Lake Concow, W of road 609 Comment
  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
  UC436306  Calyptridium monospermum E. B. Copeland 1930-6-28 Butte Jonesville, Scotch John Jonesville 1750 Comment
  CAS-BOT-BC223609  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19869 Butte Forest Ranch, 22 km NE of Chico on Rte. 32, at Schott Road junction 800 Comment
  CHSC33653  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3681 Butte Along Hwy 32, 0.2 mi N of main intersection of Forest Ranch. Comment
  HSC103802  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road, 3.1 km. NNE of Schott Road. 860 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
  RSA394851  Calystegia occidentalis subsp. occidentalis L. Ahart, Peter Ahart 1984-6-10 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC443  Calystegia occidentalis subsp. occidentalis M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  UC1601755  Calystegia occidentalis var. tomentella E. B. Copeland July, 1930 Butte Jonesville Comment
  CAS-BOT-BC496962  Camassia leichtlinii subsp. suksdorfii H. F. Copeland 1931-4-9 1525 Butte Jonesville 1524 Comment
  RSA4633  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CHSC43939  Camissonia contorta Vernon Oswald 1988-4-13 3270 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the southeast part of the ranch. 53 Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC108863  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte On the sides of the Bloody Pin Trail, about 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. 304 Comment
  CHSC3246  Capsella bursa-pastoris Virginia Hagaman 1966-2-21 15 Butte 2 1/2 miles east of Butte Creek and west of 99E. 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
  CAS-BOT-BC37267  Cardamine breweri Clarence Roy Quick 1963-7-16 63 50 a Butte Sierra Nevada. Section Corner Meadow, east of Pulga. Feather River Canyon. 1463 Comment
  CAS-BOT-BC37882  Cardamine oligosperma Lowell Ahart 1980-3-26 2062 Butte Near Hurleton. 600 Comment
  CHSC29224  Cardamine oligosperma M. S. Taylor; J. D. Jokerst 1980-3-28 2406 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC82709  Cardamine pachystigma L. P. Janeway; B. Castro 2002-3-27 7456 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about one third way down to North Fork Feather River; 1.0 km south-southeast of mouth of China Gulch. 652 Comment
  CHSC27943  Cardamine pachystigma var. dissectifolia M. S. Taylor 1979-3-20 1946 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC33901  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-5-15 3752 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  SEINET10474145  Carduus pycnocephalus Mary Susan Taylor 1980-5-24 Taylor 2746 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC113409  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC52277  Carex abrupta L. P. Janeway 1987-7-4 2430 Butte Near seepy area slong road to Jones Meadow 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CAS-BOT-BC17811  Carex amplifolia Lowell Ahart 1985-6-30 5077 Butte East of the dirt road to the Forbestown Reservation, about 2.5 miles northeast of Forbestown. 868 Comment
  CAS-BOT-BC17901  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC53752  Carex angustata L. P. Janeway; C. A. Janeway 1986-9-13 1844 Butte Just east of Scotts John Cr above Rd 26N27 (road connecting Humboldt and Humbug Rds). 1737 Comment
  CAS-BOT-BC18050  Carex athrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1813 Butte Northeast side of Philbrook Reservoir at PG&E picnic area. 1691 Comment
  CHSC91175  Carex brainerdii L. P. Janeway 2005-5-29 8406 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  SEINET10752410  Carex brainerdii Lawrence P. Janeway 1987-6-27 Janeway 2330 Butte T24N, R5E, Kimshew Point quad NW1/4 of sec. 21. Along Little Kimshew Cr just N of Ramsey Bar. 1341 Comment
  CAS-BOT-BC34372  Carex cusickii H. F. Copeland 1935-7-28 1500 Butte Jonesville. 1500 Comment
  CHSC71402  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte On the north side of the dirt road, about 1/2 mile northwest of the Lost Creek Reservoir, about 3/4 mile northwest of the Lost Creek Dam. 1021 Comment
  CHSC110144  Carex densa L. P. Janeway 2012-5-2 10813 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek between the creek and Upper Park Road, near Parking Area I. 105 Comment
  CHSC68373  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  JEPS114978  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  CHSC52859  Carex echinata subsp. echinata L. P. Janeway 1987-6-13 2213 Butte Meadow just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  SEINET10650253  Carex eurycarpa Edwin B. Copel 1930-8-10 Copeland 609 Butte Jonesville. In marshy meadows, common. 1500 Comment
  CHSC40661  Carex feta J. D. Jokerst 1984-5-19 2025 Butte Perennial seepage along the edge of Highway 70 directly across from a roadside rest area along a small dirt road that parallels Hwy 70. Comment
  CHSC45048  Carex feta Vernon Oswald 1987-5-18 2907 Butte Butte Creek Reserve on the s side of Butte Creek e of Hwy 99. On the edge of a now dry ditch diverting winter water from the control valve of Durham Mutual Ditch back into Butte Creek. 68 Comment
  CHSC45710  Carex feta L. P. Janeway 1987-5-7 2026 Butte Wet drainage edge of Cottonwood Rd 2.2 mi W of Table Mtn Rd at Cottonwood Creek. 48 Comment
  CHSC101144  Carex gracilior Lowell Ahart 2009-5-15 15710 Butte East bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC78177  Carex gracilior Lowell Ahart 2000-5-18 8374 Butte On the bottom of the Clay Pit, near the cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) sothwest of Oroville. 36 Comment
  JEPS113289  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side fo North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 52 Comment
  SEINET7560148 Image available Carex gracilior L. P. Janeway, Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Oroville Dam Quad 7.5' quad. Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oroville, 2.1 km east of the Bidwell Bar Bridge, next to Craig Saddle Boat-in Campground. 290 Comment
  CHSC99389  Carex heteroneura Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10517 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC105960  Carex integra Lowell Ahart 2010-9-28 17271 Butte About 20 yards west of Big Kimshew Creek, meadow, 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 Philbrook Reservoir. 1886 Comment
  CAS-BOT-BC94042  Carex inversa Peter F. Zika 2010-5-16 24826 Butte Robinson Street near Lincoln Street, Oroville, Ahart's station, Sacramento Valley (ScV) 50 Comment
  CHSC44119  Carex jonesii L. P. Janeway 1987-6-26 2292 Butte At Rag Dump. 1173 Comment
  CHSC52916  Carex jonesii L. P. Janeway 1988-7-2 2945 Butte Marsh-meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CAS-BOT-BC7783  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC113421  Carex laeviculmis Lowell Ahart 2014-7-2 19537 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC43874  Carex laeviculmis L. P. Janeway 1987-6-8 2158 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  CAS-BOT-BC7778  Carex laeviculmis Lowell Ahart 1988-7-31 6154 Butte 1 1/2 air miles west and a little sout of Bald Mountain, about 3 air miles north-east of Stirling City, CA 1066 Comment
  HSC87071  Carex laeviculmis L. P. Janeway 1987-6-13 2203 Butte Edge of creek at road crossing, road to Mayaro, 1 mi. E of Concow Rd. 1107 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 Comment
  UCR246363  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Northern Sierra Nevada Highlands (n SNH), Moreville Ridge Road [Forest Road 20N03 ], 0.4 road miles N of dam on Lost Creek Reservoir 1025 Comment
  SEINET10828947  Carex luzulina var. ablata Lowell Ahart 2010-9-21 Ahart 17219 Butte T25N, R5E, northeast 1/4 Section 29. Near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1918 Comment
  SEINET12649574 Image available Carex luzulina var. ablata Lowell Ahart 2010-1 17219 Butte 1918 Comment
  JEPS121961  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC201800  Carex mariposana H. M. Hall 1914-7-27 9792 Butte Butte Mt. summit Sierra Nevada Mountains 2133 Comment
  CAS-BOT-BC32152  Carex multicaulis Lowell Ahart 1980-5-29 2361 Butte 2.5 mi NE of Mountain House. 1100 Comment
  RSA0115349  Carex multicaulis Lowell A. Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  SEINET10713512  Carex multicaulis Lawrence P. Janeway 1988-6-19 Janeway 2830 Butte T24N, R4E, Stirling City quad. NW1/4 of sec. 16. 2.4 mi N of Stirling City towards Inskip, along dirt logging road 0.1 mi W of Skyway. W-facing roadcut of steep soft dirt. With C. brainerdii. 1173 Comment
  JEPS106371  Carex nervina Lowell Ahart 2004-7-23 11297 Butte about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. Comment
  CHSC45051  Carex pachystachya Vernon Oswald 1987-5-7 2378 Butte Butte Creek Reserve on the n side of Butte Creek, e of the Skyway. 74 Comment
  JEPS106524  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  CHSC44952  Carex praegracilis L. P. Janeway 1988-6-14 2762 Butte Northwest side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC77823  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  JEPS104170  Carex praegracilis Lowell Ahart 2003-5-27 10221 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC107571  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
  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
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC44169  Carex straminiformis V. Oswald; L. Ahart 1988-7-29 3647 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  SEINET10946215  Carex subfusca Lawrence P. Janeway 1988-6-16 Janeway 2798 Butte T25N, R3E, Butt Meadows quad (15') SE1/4 of sec. 12. SE-facing slope above Butte Cr; along rd in W side of canyon, 3.7 mi S of Humboldt Rd. 1295 Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  SEINET10880020  Carex tompkinsii Mary Susan Taylor 1980-5-8 Taylor 2599 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
  CHSC45066  Carex utriculata Vernon Oswald 1987-5-21 2918 Butte Humbug Rd. between the Skyway and the road to Philbrook Reservoir, near Memorial Spring just ne of Chaparral Guard Station. 1554 Comment
  JEPS114822  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 243 Comment
  SEINET10367321  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands, Magalia Serpentine, Coutolenc Rd., 0.1 miles N. of Skyway Rd 720 Comment
  SEINET10785808  Carex xerophila John Thomas Howell, Gordon H. True 1969-4-9 Howell 45490 Butte Magalia. 701 Comment
  UC2026858  Carya illinoinensis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18018 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC770  Caryopteris incana V. Holt 1952-7-2 Butte In Mrs. Sanborn's garden, Chico. 57 Comment
  JEPS81862  Castilleja affinis subsp. affinis L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5849 Butte about 10 mi e Oroville (along Olive Highway, 0.3 mi w of Forbestown Road) Comment
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  CHSC114973  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC27563  Castilleja applegatei subsp. pinetorum Robert Schlising 1978-5-17 3262 Butte Magalia. Just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  UC1562305  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1990-7-19 4367 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 0.4 mi w of the Plumas County line) 2011 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
  UC725423  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (on U.S. Hwy 99E, near the Y) Comment
  CHSC43166  Castilleja exserta Don Kroessig 1979-4-16 1 Butte On W side of Bruce Road 1.1 mile n of intersection with the Skyway. 76 Comment
  UC719292  Castilleja exserta F. G. Meyer 1938-4-4 1344 Butte 6 mi e Orland Comment
  JEPS122211  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC39932  Castilleja lacera M. S. Taylor; V. Oswald 1984-4-4 5393 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Comment
  SD4806  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville, glades and edges of meadows 1500 Comment
  CHSC3758  Castilleja pruinosa R. L. Adams 1964-4-2 80 Butte Roadside SE side of road, 1 1/2 mi. E. of Ten-Mile House on highway 32, 10 mi. E. Chico. Comment
  CHSC107595  Castilleja tenuis Lowell Ahart 2011-7-9 17575 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
  POM193336  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  UC532168  Castilleja tenuis Herbert F. Copeland 1934-7-9 Butte edge of Butte Creek Meadows (Jonesville Region); Jonesville Region Comment
  CAS-BOT-BC48546  Ceanothus cordulatus A. A. Heller 1914-7-24 11623 Butte Sierra Nevada at Butte Meadows, on th banks of Butte Creek 1219 Comment
  CAS-BOT-BC50777  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  CAS-BOT-BC50785  Ceanothus integerrimus B. D. Stark 1929-7-26 598 Butte Pardise Comment
  SACT002930  Ceanothus integerrimus Josephine Van Ess 1974-8-31 Butte Common shrub, some in flower, some in seed. Collected at end of ranch road at the stream. Comment
  SEINET12210970  Ceanothus integerrimus Unknown 1981-1 14 Butte ca 14 mi E of Chico, 6 mi E of Butte Creek (Covered Bridge) on Honey Run Road, 25 ft from rd. side 168 Comment
  UCSB62944  Ceanothus integerrimus Sarr, Dan 1995-7-29 Butte 8 mi N of Forest Ranch, on Highway 32 950 Comment
  CHSC46507  Ceanothus integerrimus var. californicus Lowell Ahart 1980-9-10 2645 Butte Along the edge of the road, about 7 miles east of Milsap Bar, about 32 miles north-east of Oroville. 1097 Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 Comment
  CAS-BOT-BC52005  Ceanothus prostratus Anna Head 1921-6-25 s.n. Butte ridge East of Lake Center Camp, Feather River Region Comment
  CHSC55405  Ceanothus prostratus Charlie Crannell 1991-4-13 1 Butte Forest Ranch; west of intersection of Doe Mill Road and Garland Road. 865 Comment
  SEINET10493651  Ceanothus prostratus Mary Susan Taylor 1976-4-4 Taylor 1057 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
  SEINET13946050 Image available Ceanothus prostratus A. A. Heller 1915-1 11971 Butte Chico Meadows in the Sierra Nevada; 4000 ft alt. 1219 Comment
  RSA25676  Ceanothus prostratus var. occidentalis Carl B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada, 7 miles W of De Sabla on road to Forest Ranch. 762 Comment
  CAS-BOT-BC52423  Ceanothus velutinus var. velutinus Anna Head 1921-7-11 s.n. Butte Indian Pk, Feather River Region Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  UC2026862  Celtis sinensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18231 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC282002  Centaurea calcitrapa J. D. Jokerst 1985-6-17 2746 Butte Along the intermittent creek draining Box Hall Flat, between Lake Oroville and Potters Ravine 518 Comment
  CHSC20502  Centaurea cyanus M. S. Taylor 1975-7-1 828 Butte 1456 Arcadian, Chico. 60 Comment
  CHSC78120  Centaurea melitensis Lowell Ahart 2000-5-31 8414 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
  CHSC93860  Centaurea melitensis Lowell Ahart 2006-6-9 12659 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
  UC196282  Centaurea melitensis A. A. Heller 1914-7-13 1753 Butte 10 mi e of Oroville (Mt. Ida ranch) Comment
  CAS-BOT-BC272092  Centaurea melitensis Lowell Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut 50 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  UC171477  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte e of Chico (hills near Big Chico creek) Comment
  UCD130186  Centromadia fitchii W. R. Powell 1968-11-12 1613 Butte Ellis Ranch, 200 yards north of La Porte Road, 4 miles southwest of Bangor. 91 Comment
  CHSC87226  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CDA30204  Cephalanthus occidentalis var. californicus L. Ahart 2009-7-9 16019 Butte On the east edge 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. Comment
  CHSC41253  Cerastium fontanum subsp. vulgare S. C. Morey 1983-7-21 469 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC94262  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 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
  CAS-BOT-BC388261  Cerastium glomeratum Lowell Ahart 1980-4-19 2080 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA590212  Cerastium glomeratum Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7231 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  CHSC48282  Ceratophyllum demersum Vernon Oswald 1984-7-19 1607 Butte Bidwell State Park between W. Sacramento Ave. and Big Chico Creek at the boat ramp. In a slough of the Sacramento River. 39 Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CHSC42976  Cercocarpus betuloides var. betuloides Lowell Ahart 1987-7-3 5748 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 548 Comment
  UC436289  Chaenactis douglasii var. douglasii unknown 1930-7-1 Butte above Jonesville Jonesville 2000 Comment
  CHSC46079  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte Prune orchard, west of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville. 30 Comment
  CHSC616  Chamaesyce maculata R. Carter 1964-6-5 110 Butte 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 3 ft. brom back door beside walk. 243 Comment
  JEPS115034  Chamaesyce maculata Lowell Ahart 2007-10-31 14520 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
  CHSC26627  Chamaesyce ocellata M. P. Hayes 1977-9-12 124 Butte In the area of the gardens on Butte College Campus at the corner of Pentz and Clark roads. 90 Comment
  RSA755772  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-8-15 16284 Butte Road edges, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC113132  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-18 19275 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  CAS-BOT-BC166005  Chamerion angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  CAS-BOT-BC69440  Cheilanthes gracillima M. S. Taylor 1978-7-21 1840 Butte Big Bald Rock, ca. 2 mi. e. of Lake Madrone. 997 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  UC474227  Cheilanthes gracillima H. F. Copeland 1920-5-22 Butte Jonesville Comment
  SEINET10966199  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3454 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  RSA755750  Chenopodium L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  SEINET11268220  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-11-10 9413 Butte North side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air east of Gridley.; 0 27 Comment
  CHSC117324  Chenopodium pratericola B. Castro; Melinda Carlson 2007-10-25 1682 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek adjacent to surrounding riparian forest. Arroyo Chico land grant area. 36 Comment
  CAS-BOT-BC451482  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  CHSC45845  Chorizanthe membranacea Lowell Ahart 1975-6-5 783 Butte On dredger piles along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET10479751  Chorizanthe membranacea Lowell Ahart 1984-6-8 Ahart 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC9140  Chorizanthe stellulata M. P. Coffeen 1970-4-21 20 Butte 7 mi. up Skyway off Hwy. 99 E. About 50 ft. off rd. to the north on a dry rocky shelf. 396 Comment
  JEPS104464  Chorizanthe stellulata Lowell Ahart 2003-5-27 10218 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  CHSC26652  Cichorium intybus M. S. Taylor 1977-11-10 1528 Butte Ca. 1 mi E of jct of Nelson West Rd and Chico-Butte Hwy, on N side of Nelson West Rd, ca. 23 mi S of Chico. 30 Comment
  UC1586527  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte along Haphazard Creek (about 1 mi nw of Rogers Cow Camp, w of Oroville-Quincy Hwy about 6 mi ne of Brush Creek); along Haphazard Creek 1219 Comment
  UC1122351  Circaea alpina subsp. pacifica P. L. Johannsen 1936-7-17 942 Butte 3 mi. s.e. Butte Meadows; Lassen Nat'l Forest, Paynes Creek Quad. Comment
  CHSC37410  Cirsium arvense R. A. Schlising; J. D. Jokerst 1982-9-7 4390 Butte N part of county, n of Philbrook Reservoir, in Coon Hollow. Roadside. 1706 Comment
  CDA20150  Cirsium vulgare B. Smith August 1996 s.n. Butte Plumas National Forest; 0.5 mi E of Lumpkin. 1173 Comment
  POM180913  Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  UCD13205  Clarkia affinis Charles Martin 1986-4-26 13 Butte Sutter Buttes, canyon SE of North Butte. 182 Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  CHSC85007  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 287 Comment
  RSA337386  Clarkia biloba subsp. brandegeeae L. Ahart 1984-6-8 4658 Butte Along Ponderosa Way, 1/8 mile W of Ponderosa Dam, 2 miles NW ofForbestown 370 Comment
  UCD21834  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CHSC48625  Clarkia gracilis subsp. albicaulis Vernon Oswald 1984-5-28 1210 Butte Cohasset Rd., 3.0 mi n-e of its jct. with Keefer Rd. Beside the road. 243 Comment
  CAS-BOT-BC171883  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET9349101  Clarkia mildrediae Unknown 1996-7-9 13174 Butte Plumas National Forest 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
  CHSC64114  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek. South-facing road cutbank. 786 Comment
  UCD104817  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road. 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  SFV10918  Clarkia purpurea M. L. Vincent 1968-6-5 774 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  HSC38051  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2457 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC91105  Clarkia purpurea subsp. purpurea Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  CAS-BOT-BC163858  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1972-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  UC107841  Clarkia purpurea subsp. quadrivulnera Mrs. R. M. Austin 1883-1 Butte Comment
  RSA448321  Clarkia purpurea subsp. viminea M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CAS-BOT-BC164782  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest of ridge between Willow and Colby Creeks 1676 Comment
  CHSC59116  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill. 396 Comment
  CHSC59117  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 472 Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CHSC70755  Clarkia rhomboidea L. P. Janeway 1994-6-17 4664 Butte Along Pulga Road (Camp Creek Road) 7.5 mi northeast of Pulga Bridge (Hwy 70); northwest side of canyon of North Fork Feather River almost overlooking Arch Rock. 701 Comment
  UC725469  Clarkia rhomboidea A. A. Heller 1938-5-30 15129 Butte on Feather River Hwy 2 mi w Arch Rock Tunnel (steep slope); ; W of Arch Rock Tunnel on the Feather River Highway, Butte Co. Comment
  RSA512848  Clarkia rhomboidea J. T. Howell 1967-6-22 42645 Butte Sierra Nevada: 3 miles northwest of Pulga Bridge, canyon of the Feather River North Fork. Comment
  CAS-BOT-BC439773  Claytonia perfoliata Lowell Ahart 1984-6-10 4711 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC34943  Claytonia perfoliata subsp. perfoliata W. A. Vaccaro 1976-4-17 2 Butte Pop. scattered N side of Humbug Rd., ca. 2 mi. E of Centerville. 129 Comment
  CHSC33572  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-27 3557 Butte 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. 1005 Comment
  CHSC33589  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-28 3564 Butte N side of rd 23N28.2 in loop of rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca 23 air mi nw of Oroville. 929 Comment
  CHSC116963  Clematis lasiantha Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  CHSC52782  Clematis lasiantha Neal Schaeffer 1982-4-18 10 Butte Between Pentz Rd and Kunkle Reservoir, ca. 20 m from road, 50 m n of reservoir access road. 450 Comment
  UCD95581  Clematis ligusticifolia L. and P. Alhart 1993-7-24 4215 Butte Western Virgin's Bower. At the Forbestown Reservoir, ca. 5 mi NE of Forbestown Reservoir, Yellow Pine Forest. 450 Comment
  SEINET10536152  Clematis ligusticifolia Mary Susan Taylor 1979-10-13 Taylor 2250 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC4624  Collinsia sparsiflora R. Carter 1966-3-22 310 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. Comment
  POM43045A  Collinsia sparsiflora var. collina C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  CHSC39299  Collinsia tinctoria Lowell Ahart 1983-7-29 4249 Butte 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1000 Comment
  JEPS108719  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  POM42871  Collinsia tinctoria C. C. Bruce 1897-06 1845 Butte Little Chico. Comment
  SEINET10496933  Collomia grandiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4747 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
  SEINET10496937  Collomia heterophylla Mary Susan Taylor 1981-4-28 Taylor 3563 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  CAS-BOT-BC180253  Comandra umbellata subsp. californica Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC1609146  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1993-4-21 5292 Butte 2.25 air mi nw of Magalia (on w side of Middle Butte Creek Trail, Ponderosa Way); Middle Butte Creek Trail, Ponderosa Way 731 Comment
  SEINET10544538  Comandra umbellata subsp. californica Mary Susan Taylor 1978-5-6 Taylor 1588 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC39639  Convolvulus arvensis Tom Hughes 1982-7-20 30 Butte Chico, North East corner of Shasta ave and Esplinade intersection. Comment
  JEPS102543  Conyza canadensis Lowell Ahart 2000-11-4 8716 Butte Just north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) SE of Paradise. 335 Comment
  SEINET10470000  Corallorhiza maculata Mary Susan Taylor 1981-5-27 Taylor 3804 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  RSA0084711  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-8-3 16253 Butte W side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  RSA537685  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte About 1.5 miles west of Butte Meadows at Thatcher Ridge near junction. 1280 Comment
  CHSC32750  Cornus nuttallii M. S. Taylor 1981-4-14 3531 Butte N side of Ponderosa Way (Rim Rd.), ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  RSA123068  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mile south of Butte Meadows. 1341 Comment
  UC195372  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  CHSC48307  Cornus sericea subsp. sericea Vernon Oswald 1987-6-23 3007 Butte Just w of the Skyway, 1.4 mi (odometer) s of Inskip. 1426 Comment
  CAS-BOT-BC210520  Cornus sessilis Clarence Quick 1940-7-20 s.n. Butte Big Bar Mt., E. of Feather River at Pulga; from Big Bar Lookout 2-3 miles towards Brush Creek Comment
  CHSC49700  Cortaderia selloana Vernon Oswald 1987-9-9 3240 Butte Butte Creek Preserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi e of the diversion dam for Crouch Ditch. On the bottom of a dredger pond. 80 Comment
  RSA0125552  Corydalis caseana Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  CHSC11913  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  CHSC106060  Cotinus coggygria Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17044 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CDA34558  Cotoneaster pannosus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS124182  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. Comment
  SBBG128077  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte S side of Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi SW of intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 311 Comment
  UC1586403  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam. 213 Comment
  JEPS107341  Cotula australis Lowell Ahart 2005-4-2 11680 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS117559  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 47 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC90630  Crassula tillaea Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11662 Butte Big Chico Creek Ecological Reserve. About 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CAS-BOT-BC290316  Crepis M. S. Taylor 1978-7-18 1681 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Td & Hwy 32 1371 Comment
  CAS-BOT-BC290745  Crepis occidentalis subsp. occidentalis H. F. Copeland 1931-6-11 1532 Butte Jonesville. Near Butte Creek Meadows 1828 Comment
  CHSC31692  Croton setiger L. Ahart 1972-6-21 118 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SBBG19380  Croton setiger H. F. Copeland 1937-7-30 1604 Butte foothills, near Oroville Comment
  SEINET3477506  Crucianella angustifolia Unknown 2003-5-26 10214 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.67 miles east of Honcut 60 Comment
  CHSC46978  Crypsis schoenoides Vernon H. Oswald 1989-9-23 4014 Butte Butte Community College where on the margin of the northeast wildlife pond located between Clear Creek and its West Branch. 91 Comment
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET11688336  Crypsis schoenoides Unknown 1984-1 4788 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  CAS-BOT-BC190171  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 Comment
  RSA4225  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  CHSC40754  Cryptantha flaccida Lowell Ahart 1985-5-6 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  CHSC29388  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-5 3644 Butte N of Lake Oroville along Hwy 70, s of the Pulga crossing of North Fork, Feather River. 609 Comment
  UC763036  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  SD4203  Cryptantha torreyana E. B. Copeland 1929-7-29 Butte Jonesville 1700 Comment
  CAS-BOT-BC68067  Cryptogramma acrostichoides Lowell Ahart; Vernon Oswald 1987-8-5 3179 Butte Near Humboldt Peak 2151 Comment
  CHSC25256  Cuscuta californica M. S. Taylor 1977-6-26 1369 Butte On s side of Ponderosa Way, ca. 4 mi e of Forest Ranch. 548 Comment
  CDA39931  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  CHSC46488  Cuscuta howelliana Lowell Ahart 1978-5-15 1721 Butte Peter Ahart Ranch, about 2-1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  CHSC78509  Cuscuta pentagona Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC94088  Cuscuta pentagona R. Fischer 2005-10-2 681 Butte Chico. Collected from Bidwell Park from the Diversion Channel just below the Lindo Channel split. Plants growing in the soil deposited above the dragon teeth. 60 Comment
  CHSC45615  Cycladenia humilis var. humilis L. P. Janeway 1988-6-25 2858 Butte Along The Skyway 2.4 mi N of Inskip; ridgetop near Bottle Hill. 1554 Comment
  CHSC47968  Cycladenia humilis var. humilis Vernon Oswald 1987-5-21 2919 Butte Skyway 2.3 mi n of Inskip. 1584 Comment
  CHSC33257  Cycloloma atriplicifolium R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. Comment
  SEINET10497513  Cynoglossum grande Mary Susan Taylor 1976-3-6 Taylor 1011 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC11331  Cynosurus echinatus Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4306  Cynosurus echinatus R. L. Smith 1966-5-25 9 Butte Paradise 5 mi sw of post office. Comment
  JEPS103526  Cynosurus echinatus Lowell Ahart 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS117276  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  UCD150346  Cyperus bipartitus William Anderson 1965-9-4 s.n. Butte Dry Creek-Oro-Paradise Rd. Comment
  CHSC83007  Cyperus difformis Lowell Ahart 2002-9-7 9930 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC97258  Cyperus difformis Lowell Ahart 2007-8-19 14486 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS113500  Cyperus difformis Lowell Ahart 2007-7-8 14268 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  SEINET13709788  Cyperus difformis Lowell William Ahart, Lowell William Ahart 2002-1 9930 Butte E Side Cherokee Rd., 1 Mi. N of Oroville (39 Deg 31'49.5"N, 121 Deg 33'15"W) 427 Ft. 130 Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  JEPS118059  Cyperus eragrostis Lowell 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
  RSA0046895  Cyperus eragrostis Richard Carter 2006-7-30 17095 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99; along Mud Creek. Comment
  JEPS103335  Cyperus erythrorhizos Lowell Ahart 2002-10-17 9997 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UC698548  Cyperus erythrorhizos P. B. Kennedy Aug 9 1921-Aug 10 1921 Butte Comment
  UCD141051  Cyperus erythrorhizos P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unkown. Comment
  SEINET7581945 Image available Cyperus flavescens Lowell Ahart 1987-1 5865 Butte Along the north fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET12875381 Image available Cyperus iria Lowell Ahart 2012-1 18415 Butte 31 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CHSC111953  Cyperus squarrosus Lowell Ahart 2012-6-5 18161 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC45155  Cyperus squarrosus Lowell Ahart 1974-7-1 504 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CHSC68409  Cyperus strigosus L. P. Janeway 1986-9-20 1873 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  SEINET3164918  Cyperus vegetus L. S. Rose 1939-6-11 39277 Butte 6 mi. e. of Honcut 137 Comment
  HSC66217  Cystopteris fragilis M. S. Taylor 1979-5-4 1988 Butte Millsap Bar Campground, 9 mi. NE of jct. of Millsap Bar Rd. with Brush Cr. Rd., 26 mi. NE of Oroville 1006 Comment
  CAS-BOT-BC189852  Danthonia californica Lowell Ahart 1983-6-21 4093 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1.25 mile west of the Oroville Quincy Highway, ca. 15 miles northeast of Oroville. 450 Comment
  CAS-BOT-BC189896  Danthonia californica Clarence R. Quick 1959-8-19 59 -46 Butte Sierra Nevada. Section Corner Meadow (east of Pulga on road between Coyote Gap and Four Trees). Comment
  SEINET4566566  Danthonia californica R. McKee, H. Westover 1918-6-15 814860 Butte Paradise Comment
  CHSC99483  Danthonia unispicata Lowell Ahart; John Dittes 2008-6-19 14869 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
  CHSC99651  Darlingtonia californica H. Koeth 2007-5-7 Butte Butte Meadows, Cherry Hill Campground, hillside se ... Field redacted by CHSC, contact the data manager for more information 1326 Comment
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  CHSC43656  Datisca glomerata Vernon Oswald 1987-5-26 2929 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC11341  Datura ferox Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36297  Daucus carota M. S. Taylor 1982-8-16 4986 Butte Just n of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  SEINET10873897  Daucus pusillus Lowell Ahart 1985-5-15 Ahart 4985 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CAS-BOT-BC173264  Delphinium M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico 457 Comment
  CAS-BOT-BC8564  Delphinium hansenii C. C., Mrs. Bruce 1897-6-1 1913 Butte unspecified Comment
  LA38372  Delphinium hansenii Lewis; 765 Butte 6.4 mi. E. of Oroville City Limits Comment
  CHSC117611  Delphinium hansenii subsp. hansenii L. P. Janeway 2016-4-26 11937 Butte Sacramento Valley. Along Nelson Road 1.0 Road-km west off its bridge across Thermalito Forebay; where the road crosses Campbell Hills. 94 Comment
  JEPS117186  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico 144 Comment
  CAS-BOT-BC10305  Delphinium hesperium Mrs. H. C. Cantelow 1940-5-10 4254 Butte Bidwell Bar Bridge Comment
  UCD95846  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SD1703  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville; common in the brush and open woods 1550 Comment
  CHSC23692  Delphinium patens M. S. Taylor 1976-5-5 1116 Butte Ca. 50 ft s of Hwy 70 along dirt road, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  CHSC22990  Delphinium variegatum Robert A. Schlising; L. Thurman, T. Crovello 1963-6-7 2617 Butte Sierra Nevada. Foothills. 3.1 mi. s. Cohasset along Cohasset Hwy. Comment
  CHSC52500  Delphinium variegatum Gary McHargue 1975-3-6 3 Butte Ca 75 yds s of Cohasset highway and 4 mi n of Chico municipal airaport, 8 mi ne of Chico. 152 Comment
  CHSC53300  Delphinium variegatum J. R. Lee 1974-4-22 3 Butte Found 25 yds on the n side of the Skyway, 6 mi e of the Chico city limits. 152 Comment
  CAS-BOT-BC82875  Dendromecon rigida Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham. Comment
  SFV1356  Dendromecon rigida B. Fuller 1961-4-28 s. n. Butte Sierra Nevada Paradise. Stearns and Harrison Roads. 535 Comment
  CAS-BOT-BC194310  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville, border of the Lily Pond, a permanent pool. 1750 Comment
  UC589923  Deschampsia cespitosa subsp. cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 mi. s.-s.e. Butte Meadows; Paynes Creek Quad. 1493 Comment
  CHSC10640  Deschampsia danthonioides Lowell Ahart 1970-4-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC791015  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at rd. forking to Chico Creek Lomo Comment
  UC589924  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte 2 1/2 mi. s.e. Butte Meadow; Paynes Creek Quad. 1493 Comment
  CHSC44385  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC2518  Dicentra formosa W. Fitzwater 1958-4-26 Butte Below Forest Ranch, ca. 15 mi. NE of Chico. Comment
  CAS-BOT-BC402390  Dicentra formosa subsp. formosa D. Parkinson 1964-5-1 s.n. Butte In vicinity of Monk's Store, Cohasset Stage Comment
  CHSC19648  Dicentra nevadensis K. R. Stern 1964-5-16 Butte Chico. Comment
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Nov 18 2009
  CHSC30975  Dichelostemma capitatum subsp. capitatum Diane M. Reilly 1980-4-11 6 Butte 10 ft e of creek, ca. 1/2 mi n on drt road off Big Bend Rd, ca. 5 m 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
  HSC45005  Dichelostemma capitatum subsp. capitatum J. P. Smith 1973-3-22 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  JEPS113335  Dichelostemma capitatum subsp. capitatum L. P. Janeway and B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  CHSC92733  Dichelostemma multiflorum L. P. Janeway 2005-6-26 8430 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
  JEPS48317  Dichelostemma multiflorum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2690 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  JEPS95157  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  CAS-BOT-BC150253  Diplacus Grace Kermode 1899-6-9 s.n. Butte Sandy Gulch, Chico Comment
  CHSC10712  Diplacus douglasii Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  CHSC44753  Diplacus douglasii R. Banchero 1980-3-9 59 Butte Ridge above Horseshoe Lake in upper Bidwell Park. 195 Comment
  SEINET10570111  Diplacus grandiflorus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4230 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SJSU14138  Diplacus kelloggii D. J. Lane 1976-3-27 Butte Table Mt, Oregon City Rd 335 Comment
  CAS-BOT-BC153339  Diplacus layneae Lowell Ahart 1989-5-28 6292 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CAS-BOT-BC154033  Diplacus torreyi A. A. Heller 1913-6-7 10799 Butte Near Stirling 1074 Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC44803  Diplacus torreyi R. Banchero 1980-6-2 182 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  CHSC93986  Diplacus torreyi R. D. Fischer 2004-6-20 767 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC39545  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  SEINET10465020  Dipsacus fullonum Mary Susan Taylor 1982-10-11 Taylor 5164 Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  CHSC90304  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point. 1249 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC31198  Dodecatheon hendersonii M. S. Taylor 1980-2-17 2358 Butte Along a dirt road, ca. 1/4 mi sw of Lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  HSC23362  Dodecatheon hendersonii R. J. Swift 1970-3-25 10 Butte Along Honey Run Rd., ca. 2.2 mi. NE of Covered Bridge at entrance to McEnespy's Ranch 244 Comment
  SEINET10547761  Dopatrium junceum Lowell Ahart 1991-7-21 Ahart 6668 Butte Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  CHSC28479  Downingia bella R. A. Schlising 1979-4-8 3355 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
  CHSC26816  Downingia bicornuta M. S. Taylor 1978-5-7 1602 Butte In Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  CHSC81239  Downingia bicornuta var. bicornuta J. Trizzino 2001-4-25 60 Butte Oro-Chico Highway, 0.25 mi west of Neal Road. 54 Comment
  JEPS95868  Downingia insignis Lowell Ahart 1999-5-21 8074 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
  CHSC12173  Draba verna var. aestivalis Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35901  Draperia systyla M. S. Taylor 1982-5-23 4512 Butte S side of Jwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC41360  Drosera rotundifolia R. A. Schlising 1980-7-14 3890 Butte 1.1 mile S of Inskip along the Skyway. ... Field redacted by CHSC, contact the data manager for more information Comment
  UC426910  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  CHSC34  Dryopteris arguta V. Holt 1935-11-1 Butte Honey Run grade. 365 Comment
  CHSC27259  Duchesnea indica P. Moyer 1972-3-11 123 Butte CSUC Campus. 200 ft. from n side of cafe annex bridge, w side off walkway. 60 Comment
  UCD101932  Dudleya multicaulis R. Curtis 1995-5-27 8 Butte 10 m above Bear Hole, Big Chico Creek, approx. 6 miles south of Bidwell Road in Upper Bidwell Park. Comment
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Apr 7 2018
  CHSC75995  Dysphania ambrosioides Lowell Ahart 1999-8-22 8183 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
  CHSC116129  Dysphania botrys Lowell Ahart 2015-11-7 20617 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC66436  Dysphania botrys V. H. Oswald; Lowell Ahart 1996-6-10 7739 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Scattered plants on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC40611  Dysphania pumilio Lowell Ahart 1985-10-12 5203 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reserovir, about 3 miles south of Paradise. 301 Comment
  CHSC66437  Dysphania pumilio Vernon H. Oswald; Lowell Ahart 1996-6-10 7738 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Scattered plants on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 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
  UCD98828  Dysphania pumilio J. A. Ream 1931-7-21 2240 Butte Paradise. Comment
  CHSC66174  Echinochloa crus-galli Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 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 bed of a seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  JEPS120870  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  UC1100268  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12740 Butte nw Pennington; Gray Lodge Game Refuge Comment
  CAS-BOT-BC197251  Echinochloa muricata Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  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
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC66452  Echinodorus berteroi Vernon H. Oswald; Lowell Ahart 1996-6-10 7763 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  CHSC108133  Eclipta prostrata Lowell Ahart 2011-10-29 17718 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
  JEPS119523  Eclipta prostrata Lowell Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC111507  Elatine Lowell Ahart 2014-4-17 19380 Butte On dry gray clay soil, bottom of a rice field, about 20 yards north of Hailton Road, about 1/2 mile east of Riceton Highway, about 2 1/2 miles (air) noth of Biggs. Agricultural. 30 Comment
  CHSC115322  Elatine Lowell Ahart 2015-4-24 20074 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  JEPS122150  Elatine Lowell Ahart 2014-8-8 19696 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  RSA0112566  Elatine ambigua Lowell A. Ahart 2013-9-20 19061 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 31 Comment
  CHSC82220  Elatine chilensis Lowell Ahart 2002-4-15 9498 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
  CAS-BOT-BC113457  Eleocharis bella Clarence Roy Quick 1963-7-16 63 52 b Butte Section Corner Meadow, E of Pulga, Feather River canyon. 1463 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 Comment
  SD425  Eleocharis bella E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CAS-BOT-BC113451  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Ca 1/2 mi N of Kinkle Res., ca. 2 mi S of Paradise. 600 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC45116  Eleocharis bolanderi Vernon Oswald 1988-5-18 3317 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell 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
  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
  CDA39004  Eleocharis obtusa var. engelmannii L. Ahart 2003-6-23 10 .302 Butte Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. Comment
  CDA39003  Eleocharis obtusa var. engelmannii L. Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs. Comment
  CHSC116326  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS88549  Eleocharis quadrangulata Vernon H. Oswald and Lowell Ahart 1996-7-22 8092 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on s side of Tract 3.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CDA38987  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS122217  Elodea canadensis Lowell Ahart 2014-4-16 19371 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10506997  Elymus Mary Susan Taylor 1978-7-21 Taylor 1794 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC40457  Elymus elymoides subsp. elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  SEINET10507698  Elymus glaucus Mary Susan Taylor 1980-5-27 Taylor 2722 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CAS-BOT-BC203421  Elymus glaucus subsp. glaucus V. Oswald; L. Ahart 1988-7-29 3642 Butte Ca 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 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
  CHSC42920  Elymus glaucus subsp. jepsonii Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CAS-BOT-BC234103  Elymus multisetus Lowell Ahart 1977-5-20 1508 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC110479  Elymus multisetus P. Reisentz 1979-5-13 Butte Along roadside on State Highway 70, 9 miles south of Butte-Plumas County line. Comment
  JEPS87480  Elymus stebbinsii Lowell Ahart 1993-6-26 7025 Butte ca. 1 mi. w. Lost Creek Reservoir (w. side of dirt rd., Mooreville Ridge); Mooreville Ridge 1188 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CAS-BOT-BC165910  Epilobium John Thomas Howell 1959-9-26 35085 Butte Arch Rock, N. Fk. Feather River 457 Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  SD3257  Epilobium brevistylum E. B. Copeland 1929-7-25 Butte Jonesville. 1500 Comment
  CHSC112926  Epilobium campestre B. Castro; Sabrina Bell 2012-6-12 1928 Butte Sacramento Valley. Ca 1.7 air mi E of Hwy 99 and 0.75 mi N of Hwy 162 of NE edge of Thermalito Thermalito Afterbay, 0.45 mi SW of old 'Oroville Jcn' on maps, now jcn of Tres Vias and Wilbur Roads. 45 Comment
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  SBBG126101  Epilobium campestre L. Ahart 2012-6-5 18166 Butte strand of the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 295 Comment
  CHSC26296  Epilobium canum subsp. latifolium J. P. Kroessig 1977-8-1 22 Butte E margin of Hwy 32, ca 6 km wsw of Butte Meadows. Roadside. 1098 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
  SD51222  Epilobium canum subsp. latifolium Darley F. Howe 1960-9-20 2982 Butte North fork of Feather River, 8 miles from Oroville. 152 Comment
  CHSC69723  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7932 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of the Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  POM173678  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1923-6-4 920 Butte Nelson. Comment
  SEINET10452979  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6623 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC39343  Epilobium densiflorum Lowell Ahart 1983-6-26 4149 Butte Found along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  UC70424  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  CHSC70338  Epilobium glaberrimum R. A. Schlising 1980-7-31 3943 Butte 1.1 mi S of Inskip along Skyway. Roadside. Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC24765  Epilobium minutum P. J. Welch 1976-4-12 19 Butte Ca. 1 to 2 yds n of Crown Pt. Rd. and ca. 0.3 mi e of Crown Pt. Rd. intersection with Deer Crek Hwy. (Hwy. 32); 10.1 mi ene of Chico. 304 Comment
  CHSC34715  Epilobium minutum M. S. Taylor 1981-5-21 3773 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
  UC1564741  Epilobium oregonense V. Oswald and L. Ahart 1989-8-15 3935 Butte Soda Ridge Rd 1.4 mi w junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, adjacent to a shallow lake n of and visible from rd) 1752 Comment
  CHSC95134  Epilobium pygmaeum Lowell Ahart 2006-11-12 13543 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC8750  Epipactis gigantea S. Chulasmai 1961-4-30 38 Butte Heloepine Spring (Upper Bidwell Park). Comment
  CAS-BOT-BC57856  Equisetum hyemale subsp. affine Lowell Ahart 1987-5-27 5713 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 Comment
  SFV11560  Equisetum hyemale subsp. affine M. L. Vincent 1963-6-10 422 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 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
  UC1586568  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte near Lake Oroville (w of Springtown Rd.) 304 Comment
  CHSC20222  Equisetum telmateia subsp. braunii Theresa Salinas 1972-8-3 7 Butte Doones Camp near Stirling City. 1219 Comment
  JEPS103447  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  SEINET4571500  Eragrostis leptostachya R. McKee 1907-10-19 14898 Butte Chico Comment
  CAS-BOT-BC284039  Eragrostis mexicana subsp. virescens Lowell Ahart 1981-11-6 3229 Butte East of the Gridley Bridge 35 Comment
  SEINET10507722  Eragrostis pectinacea Lowell Ahart 1984-9-24 Ahart 4811 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  RSA755372  Eragrostis pectinacea var. pectinacea L. Ahart 2009-8-13 16278 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. 69 Comment
  SEINET256565 Image available Eragrostis pilosa Lowell Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 302 Comment
  UCD65677  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs. Comment
  UCD65670  Eragrostis pilosa var. pilosa Beecher Crampton 1957-9-17 4620 Butte 5 miles northwest of Biggs, Biggs Rice Exper. Station. Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CAS-BOT-BC174107  Eremogone aculeata Anna Head 1920-7-20 s.n. Butte Top of ridge near Round Lake, Feather River Region 2133 Comment
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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  CHSC92525  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown, Lawrence Janeway, Jamie Lewis 2005-5-4 1216 Butte North of Pulga/Mayaro area. 1018 Comment
  CHSC117805  Ericameria arborescens L. P. Janeway 2016-9-15 12173 Butte Northern High Sierra Nevada. Plumas National Forest; about 30 m northeast of Old Forbestown Road, 0.6 kim north of Forbestown Road. 860 Comment
  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
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC103424  Erigeron canadensis Lowell Ahart 2009-11-19 16555 Butte On the west side of the trail, north side of the pond, about 30 yards northwest of the table, 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 239 Comment
  CHSC41874  Erigeron canadensis Lowell Ahart 1986-11-9 5438 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC78992  Erigeron canadensis Lowell Ahart 2000-11-4 8716 Butte Just north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  CAS-BOT-BC296821  Erigeron divergens Lewis S. Rose 1945-5-12 45036 Butte Richardson Springs 304 Comment
  CAS-BOT-BC295951  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  SBBG17301  Erigeron philadelphicus M. Vincent 1962-4-15 173 Butte intersection of Bernum and Pentz Rds, near the town of Pentz Comment
  JEPS119900  Erigeron philadelphicus var. philadelphicus Lowell Ahart 2012-5-25 18114 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC20971  Erigeron sumatrensis M. S. Taylor 1975-9-8 903 Butte Along Big Chico Creek, California State University, Chico, campus. 60 Comment
  CHSC116319  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte In crack between building and pavement, building of Casey's Auto Repair, east of the intersection of Spruce Street and Washington Street, Gridley. 27 Comment
  CHSC78768  Eriochloa contracta Lowell Ahart 2000-9-11 8687 Butte On the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) south of Oroville. 42 Comment
  CAS-BOT-BC216044  Eriodictyon californicum Lowell Ahart 1987-5-11 5612 Butte South of the Forbestown Ditch about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC216052  Eriodictyon californicum John Thomas Howell 1955-6-14 30457 Butte Magalia 731 Comment
  CHSC113805  Eriodictyon californicum M. Ocken 2011-4-25 Butte Butte Creek Ecological Preserve. 106 Comment
  UCD119298  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  CDA13260  Eriogonum luteolum var. luteolum G. F. Hrusa, T. D. Wilfred 1996-7-8 13104 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  SEINET8386144  Eriogonum marifolium E. B. Copeland 1930-7-12 410 Butte above Jonesville. 2000 Comment
  CAS-BOT-BC269854  Eriogonum nudum var. pubiflorum A. A. Heller 1914-7-22 11585 Butte Little Summit 1463 Comment
  RSA4637  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. 1500 Comment
  CAS-BOT-BC269849  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Roadside banks of Lower Feather River Canyon (Rte. 70) 304 Comment
  CHSC96904  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  UCD101244  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, ridge between Jones and North Willow Creeks. 518 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  UCD101504  Eriogonum umbellatum var. torreyanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC39090  Eriogonum ursinum var. ursinum R. A. Schlising 1980-5-12 3587 a Butte About 2 miles s of Pulga along Highway 70; serpentine outcrop above highway. 609 Comment
  CHSC98660  Eriogonum ursinum var. ursinum B. Castro; L. P. Janeway 2005-8-8 1513 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. E-facing upper edge of knoll on rocky serpentine ridge within patchy lower Mixed Conifer forest. 1021 Comment
  CAS-BOT-BC262344  Eriogonum vimineum Lowell Ahart 1983-7-24 4205 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CAS-BOT-BC308080  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-9 64 -51 Butte North of Jarbo Gap, Sierra Nevada Comment
  UC171430  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte near Stirling 1074 Comment
  CAS-BOT-BC308152  Eriophyllum lanatum var. grandiflorum A. A. Heller 1912-5-23 10748 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC308160  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1955-6-14 30465 Butte Magalia, Sierra Nevada 731 Comment
  JEPS32712  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1963-6-2 63066 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  JEPS115308  Erodium botrys Lowell Ahart 2009-4-17 15561 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC14197  Eryngium castrense F. T. Griggs 1973-3-20 Butte 10 miles s of Chico, 0.4 miles s of the inersection of Pentz Road and Hwy 99E. Comment
  UC764741  Eryngium castrense R. F. Hoover 1936-5-20 1156 Butte 8 mi. n. Oroville Comment
  CHSC61502  Erythranthe breweri Lowell Ahart 1993-6-20 6982 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CHSC105168  Erythranthe glaucescens Christopher T. Ivey 2007-3-30 365 Butte Cohasset Road, 2.3 m NE of intersection with Keefer Rd., 3.9 m SW of town of Cohasset, in seep on S side of road. 273 Comment
  CHSC44680  Erythranthe glaucescens R. Banchero 1980-4-13 114 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC44785  Erythranthe glaucescens R. Banchero 1980-3-21 73 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  CAS-BOT-BC292476  Erythranthe glaucescens Grace Kermode 1899-6-9 s.n. Butte Sandy Gulch, Chico. Comment
  CHSC113154  Erythranthe guttata Lowell Ahart 2013-11-13 19249 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
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC84226  Erythranthe guttata Lowell Ahart 2003-7-17 10419 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  SJSU969  Erythranthe guttata A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  SEINET14046240 Image available Erythranthe guttata Helena Barden 1941-1 Butte Road from Pines General Store, Yankee Hill, to Highway #24 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
  CAS-BOT-BC151461  Erythranthe latidens A. A. Heller 1940-5-13 15615 Butte Field 3 miles west of Chico on State Highway #32 Comment
  SD50989  Erythranthe moschata Darley F. Howe 1960-9-20 Butte North Fork of the feather River, 32 miles from Oroville, by stream 518 Comment
  CHSC27064  Erythranthe nasuta Lowell Ahart 1978-5-1 1677 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  CHSC98996  Erythranthe nasuta Lowell Ahart 2008-5-21 14774 -A Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC41292  Erythranthe primuloides S. C. Morey 1983-7-21 503 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC49007  Erythranthe primuloides Vernon Oswald 1983-7-6 823 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  SEINET10469669  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3462 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  CHSC2266  Erythronium multiscapideum R. M. Staley 1953-7-18 Butte Rush Creek. Comment
  CAS-BOT-BC504524  Erythronium multiscapideum C. C., Mrs. Bruce 1898-5-1 2011 Butte Butte Creek Comment
  CHSC2508  Eschscholzia caespitosa W. Fitzwater 1958-3-19 Butte Humboldt Rd., Chico area. 426 Comment
  CAS-BOT-BC402638  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  SEINET12094433  Eschscholzia caespitosa K. T. Pomeroy 1988-1 14 Butte ca 9.6 km N of Oroville, 75 m W of Table Mountain-Cherokee Road 245 Comment
  CAS-BOT-BC402970  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC112099  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte On the south side of Big Chico Creek, about 5 yards east of the Freewy, Lower Bidwell Park, Chico. 62 Comment
  CHSC1198  Eschscholzia californica E. Canfield 1904-5-23 Butte Hooker Oak Field. 76 Comment
  CHSC76951  Eschscholzia californica Margie Collins 1894-5-1 Butte Chico. Comment
  CHSC46496  Eschscholzia lobbii Lowell Ahart 1976-4-14 1066 Butte Found growing on a gravel bar near a small wash. Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Huncut, about 12 miles south of Oroville. 36 Comment
  RSA176478  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Field near the Hooker Oak east of Chico Comment
  SEINET12092006  Eschscholzia lobbii Unknown 1979-1 17 Butte Small population ca 5 mi SE of the town of Cherokee on Cherokee Road on Table Mtn., 23 mi SE Comment
  UC1111604  Eschscholzia lobbii Herbert L. Mason 1941-4-6 12417 Butte w Cherokee 304 Comment
  CHSC106116  Eucalyptus sideroxylon L. P. Janeway 2011-2-28 10227 Butte Sacramento Valley. Along a bench on the north side of the levee on the south side of Feather River just east of Centennial Park, Oroville. 49 Comment
  CDA43084  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville. Comment
  CHSC105488  Eucephalus breweri L. P. Janeway 2010-8-29 10172 Butte High Cascade Range. Humboldt Summit; along ridge line about 250 m west of Humboldt Road at the summit. At Plumas County line. 2030 Comment
  CDA13267  Euonymus occidentalis var. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13115 Butte Plumas National Forest; Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  CHSC44278  Euonymus occidentalis var. occidentalis V. Oswald; W. Dempsey, D. Perske 1988-6-15 3386 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Near the bottom of a canyon slope along the W. Branch of Mud Creek. 853 Comment
  RSA746974  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  UCR115041  Euphorbia nutans G. Fred Hrusa, T. D. Wilfred 1996-9-6 13572 Butte E side of Butte Creek, c. 0.5 mi. NE of confluence with Howard Slough, and immediately below McPherrin Dam (private and scheduled for removal). 23 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
  CHSC108825  Euphorbia peplus Lowell Ahart 2012-4-17 17887 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
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  CHSC101135  Euphorbia spathulata Lowell Ahart 2009-5-15 15701 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
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CDA34255  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  CHSC60481  Euthamia occidentalis K. R. Stern 1972-9-19 3783 Butte Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  SBBG128795  Euthamia occidentalis L. Ahart 2012-10-28 18531 Butte N side of Big Chico Crk, S of Table 34, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  JEPS121967  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SEINET10508573  Festuca californica Lowell Ahart 1985-5-15 Ahart 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC111379  Festuca myuros Lowell Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC82473  Festuca occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9744 Butte On the north 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
  CHSC41308  Festuca subulata S. C. Morey 1983-7-22 544 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC77487  Ficus carica Anna Pinsky 1997-4-24 23 Butte Chico, Upper Bidwell Park, Salmon Hole, adjacent to Big Chico Creek. Comment
  CAS-BOT-BC112357  Fimbristylis autumnalis V. Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the W end of Cana Rd., Comment
  CAS-BOT-BC62945  Frangula californica subsp. tomentella Lowell Ahart 1987-5-9 5586 Butte Along Pulga Road, about 1/4 mi. w. of Bardees Bar along the North Fork of the Feather River, about 2.5 mi. sw. of Pulga. 365 Comment
  CAS-BOT-BC53778  Frangula rubra Lowell Ahart 1989-5-29 6311 Butte About 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown 822 Comment
  CAS-BOT-BC55785  Frangula rubra subsp. yosemitana C. R. Quick 1941-6-8 41 -09 Butte About 2 miles S. of Big Bar. Mt. Comment
  CHSC118038  Fremontodendron decumbens Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 236 Butte Durham Native Plant trail near elementary school. 55 Comment
  SEINET10838744  Fremontodendron decumbens Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4084 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC49601  Fritillaria affinis Vernon H. Oswald 1990-2-21 4135 Butte Slope below Lower Centerville Canal, ca. 0.5 mi nw of where the canal crosses Humbug (Centerville) Rd. 274 Comment
  CHSC52379  Fritillaria affinis B. Castro 1991-3-3 439 Butte Above bend in Cohasset Rd ca 3.5 mi E of its jcn with Richardson Sprs Rd. 268 Comment
  CDA14072  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-1 13719 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC60589  Fritillaria eastwoodiae Vernon H. Oswald; Lowell Ahart 1993-4-19 5279 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, EDE of Magalia. 701 Comment
  CHSC2282  Fritillaria pluriflora N. Maxwell 1929-3-4 Butte Near Shasta Union School. 60 Comment
  SEINET3992162  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  CHSC52129  Galium aparine Patricia Haberkern 1974-3-24 20 Butte Ca. 0.25 mi. NE Sycamore Pool off South Park Drive, Bidwell Park, Chico. 60 Comment
  POM196538  Galium bifolium H. F. Copeland 1929-6-12 1212 Butte Jonesville. 1524 Comment
  CDA13247  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13094 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 mi. N of Magalia. Comment
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  SEINET10500694  Galium bolanderi Mary Susan Taylor 1978-7-18 Taylor 1671 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
  UC1609000  Galium grayanum Lowell Ahart 1993-9-8 7165 Butte on n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  SD4923  Galium grayanum subsp. grayanum E. B. Copeland 1930-7-25 474 Butte Jonesville, in crevices, dry rocky ridge 1700 Comment
  SEINET10500724  Galium murale Mary Susan Taylor 1980-4-16 Taylor 2494 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC29629  Galium parisiense J. D. Jokerst 1980-5-28 805 Butte Table Mt. Top of North Table Mt, sides of Cherokee Rd ca 1/2 mi W of the edge of the Mt. Comment
  CHSC47480  Galium porrigens var. tenue Lowell Ahart 1976-5-21 1109 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 air miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  UC1523188  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte ca. 2 mi s Lake Madrone (n side of Oroville-Quincy Hwy) 609 Comment
  SEINET10500737  Galium porrigens var. tenue Mary Susan Taylor 1981-2-11 Taylor 3380 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
  CHSC53981  Galium tricornutum Vernon H. Oswald 1991-4-24 4529 Butte Hicks Lane, ca. 0.8 mi north of Sycamore Creek, in north Chico. 60 Comment
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC32625  Galium tricornutum Patricia Datzman 1974-4-20 18 Butte 300 yds. S of the intersection of Pentz Rd. and Clarke Rd. Comment
  RSA712784  Galium triflorum L. P. Janeway 1994-7-5 4680 Butte Northern High Sierra Nevada. NE side near top of ridge 0.7 miles ESE of Flea Mtn. 0.3 miles ESE of Campbell Meadow. 1159 Comment
  SEINET10836841  Galium triflorum Mary Susan Taylor 1979-10-5 Taylor 2237 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
  CAS-BOT-BC169935  Garrya fremontii Wm. S. Levis 1931-7-3 s.n. Butte Middle Feather River Comment
  CHSC77053  Garrya fremontii L. P. Janeway 2000-1-29 6630 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  JEPS119565  Garrya fremontii Lowell Ahart 2012-2-22 17755 Butte On the south side of Guardian Trail, about 20 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  SD3490  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 Comment
  SEINET12137665  Garrya fremontii Unknown 1985-1 4835 Butte E of Magalia 750 Comment
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  SBBG583  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 mi N of Lone Pine Forest Guard Stn, St Hwy 32 Comment
  UCD66560  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  CHSC26705  Gayophytum diffusum subsp. parviflorum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1459 Butte On e side of Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  UC1122602  Gayophytum diffusum subsp. parviflorum H. S. Yates 1936-8-13 6117 Butte 3/4 mi e Butte Meadow; Paynes Creek Quadrangle 1341 Comment
  CHSC39275  Gayophytum heterozygum Lowell Ahart 1983-7-29 4224 Butte Along the edge of the dirt road, about 2 miles south of Milsap Bar, about 23 miles north-east of Oroville. 750 Comment
  POM181516B  Gayophytum humile H. F. Copeland 1927-9-4 748 Butte Jonesville. Comment
  CHSC14097  Genista monspessulana L. V. Ritter 1969-4-16 160 Butte Ca. 4.8 mi w of Cherokee turn off Hwy 70, ca. 10 yds e of rd, ca. 9 mi n of Oroville. Comment
  CHSC3487  Genista monspessulana Roger Jaegel 1966-4-20 112 Butte Located on Chico - Paradise road, four miles east of Chico. Comment
  UC426934  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville 1500 Comment
  UC426933  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville 1500 Comment
  CHSC108983  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CHSC66162  Geranium dissectum Vernon H. Oswald; Lowell Ahart 1996-5-27 761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Locally abundant on the edge of a marshy area on the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  RSA754945  Geranium purpureum L. Ahart 2008-5-12 14762 Butte East side of Ponderosa Way, about 1 air mile southwest of the Ponderosa Dam, about 2.25 air miles northwest of Forbestown. 671 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
  CHSC43048  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of creek. 1097 Comment
  CAS-BOT-BC459404  Geum macrophyllum H. F. Copeland 1920-8-29 139 Butte Jonesville 1219 Comment
  JEPS117289  Gilia 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
  SEINET10496746  Gilia capitata subsp. pedemontana Lowell Ahart 1984-6-8 Ahart 4671 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 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
  CHSC50106  Githopsis pulchella subsp. campestris Vernon Oswald 1990-4-24 4170 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  CHSC60971  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC112788  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte Drying edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  UC115342  Glinus lotoides C. C. Parry Nov. 1882 Butte Chico; Pacific Coast, Chico Comment
  UC1563258  Glinus lotoides unknown 1990-10-5 6631 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
  UC600757  Glyceria elata H. F. Copeland 1932-7-13 Butte Jonesville Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CDA13240  Goodyera oblongifolia G. F. Hrusa, T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC118061  Gratiola ebracteata Daphne K Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 231 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  JEPS98418  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte 5 mi (air) E of Oroville Dam (sides of an old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of cemetery, 1 1/2 mi S of Crystal Hill) 304 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
  CHSC50793  Grindelia hirsutula var. davyi Vernon Oswald; Lowell Ahart 1990-7-31 4416 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  POM161686  Hackelia nervosa E. B. Copeland 1929-7-17 s.n. Butte About Jonesville. 2000 Comment
  UC600450  Hackelia nervosa H. F. Copeland 1932-6-27 Butte near Butte Creek House; Jonesville Comment
  CAS-BOT-BC302419  Hazardia whitneyi J. D. Jokerst 1980-10-13 396 Butte Along edges of Jordan Hill Road 7.5 miles north of jct. with Concow Road, 1 mile SE of Sawmill Peak 944 Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  JEPS126530  Hedypnois rhagadioloides Lowell Ahart 2016-5-25 20875 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  JEPS18174  Hedypnois rhagadioloides Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5603 Butte roadside at bridgehead North Fork Feather River (on Nelson Bar Road) 198 Comment
  CAS-BOT-BC306538  Helenium bigelovii Lowell Ahart 1980-7-20 2479 Butte At Little Bald Rock 1100 Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  SACT000814  Heleochloa schoenoides Herbert Mason 1945-9-19 Butte Secondary growth resulting from flooding land, northwest of Pennington. Comment
  CHSC42463  Helianthella californica var. nevadensis Lowell Ahart 1987-5-22 5669 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC43611  Helianthella californica var. nevadensis Vernon H. Oswald 1983-8-17 989 Butte Trail between Humboldt Summit and Humboldt Peak, ne of Jonesville. At the base of slope. 2023 Comment
  CHSC43615  Helianthus annuus Vernon Oswald 1983-6-22 756 Butte Beside Calif. Hwy. 32, 5.8 mi n-e of its junction with Calif. Hwy. 99 in Chico. 304 Comment
  CHSC102959  Helianthus bolanderi Lowell Ahart 2009-8-3 16265 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC20681  Helianthus bolanderi M. S. Taylor 1975-6-30 809 Butte In ditches on e side of Cohasset Hwy, ca. 2 mi n of Chico. 91 Comment
  CHSC26668  Helianthus bolanderi M. S. Taylor; M. Hayes 1977-8-16 1439 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC354  Helianthus californicus E. Walker 1932-7-20 Butte Durham. 57 Comment
  CHSC100479  Heliotropium europaeum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC35087  Heliotropium europaeum R. A. Schlising 1981-11-3 4220 Butte Central part of county, at jct of Messilla Valley Road and Pentz Road. At roadside. 130 Comment
  JEPS87516  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CHSC64072  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte Ca 50 ft E of Hwy 99 ca 4 mi N of E. Biggs Rd, near a seep at a pumping station just W of the Thermalito Afterbay levee. 32 Comment
  UC186058  Hemizonia congesta subsp. luzulifolia A. A. Heller 1913-10-7 11147 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  CHSC33681  Hemizonia pungens subsp. septentrionalis L. Ahart 1981-5-16 2803 Butte On Gray Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  UC478492  Heracleum lanatum E. B. Copeland 1930-6-29 665 Butte Jonesville 1500 Comment
  CHSC74081  Herniaria hirsuta subsp. hirsuta B. Castro 1996-8-20 715 Butte Black Jack Fire. Ca 5 air mi N of Brush Creek, ca 0.25 mi S of Rogers Cow Camp via 'J' spur rd S of USFS Rd 23N15. 1222 Comment
  CHSC113538  Herniaria hirsuta var. hirsuta Lowell Ahart 2014-9-23 19862 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  CHSC57794  Hesperevax acaulis var. robustior Vernon H. Oswald; John Dittes 1992-4-28 4926 Butte Near the southern end of Libby Rd. in SE Paradise. On the edge of a jeep road. 481 Comment
  CHSC60653  Hesperevax acaulis var. robustior Vernon H. Oswald; James Snowden 1993-4-7 5250 Butte SE side of the creek draining Hamlin Canyon, NE of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 91 Comment
  JEPS104338  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CAS-BOT-BC176219  Hesperolinon disjunctum Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink 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
  CHSC104815  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC113493  Heterocodon rariflorum Lowell Ahart 2014-7-10 19630 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10460705  Heterocodon rariflorum Edwin B. Copel 1928-8-18 Copeland 945 Butte JONESVILLE, ALLUVIAL SANDS Comment
  SEINET10460749  Heterocodon rariflorum Mary Susan Taylor 1980-5-15 Taylor 2623 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  RSA0072449  Heteromeles arbutifolia L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  SEINET10483348  Heteromeles arbutifolia Lowell Ahart 1985-6-30 Ahart 5092 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 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
  CHSC83120  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 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
  CHSC66670  Hibiscus lasiocarpos var. occidentalis Vernon H. Oswald 1996-7-17 8067 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  SD8927  Hieracium albiflorum Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  JEPS122035  Hoita macrostachya Lowell Ahart 2014-5-27 19532 Butte Bottom of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC40422  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC41281  Holcus lanatus S. C. Morey 1983-7-21 499 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, 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
  CHSC12003  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. On mountain top. 2000 Comment
  CHSC48170  Holozonia filipes Vernon Oswald 1985-6-15 1831 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  JEPS115819  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC536588  Horkelia californica var. elata Lowell Ahart 1983-6-21 4101 Butte Along Bloomer Hill Road, 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville 700 Comment
  UC481576  Horkelia fusca subsp. tenella H. F. Copeland 1922-8-20 458 Butte Jonesville Comment
  CAS-BOT-BC143974  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  JEPS113241  Horkelia tridentata subsp. tridentata Lowell Ahart 2007-5-22 13904 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  UC860239  Horkelia tridentata subsp. tridentata A. A. Heller 1914-5-18 11413 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CAS-BOT-BC536263  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CHSC25265  Hosackia oblongifolia M. S. Taylor 1977-6-27 1395 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 60 Comment
  CHSC38501  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1983-6-14 683 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on the edge of Chico Creek. 201 Comment
  CHSC46200  Hydrophyllum occidentale L. P. Janeway 1988-6-25 2879 Butte Creek along Bull Hill Rd 2.2 mi from the Skyway. Disturbed (logged) slope just above the creek. 1508 Comment
  CHSC48462  Hydrophyllum occidentale Vernon Oswald 1984-4-9 1128 Butte Feather Falls Trail near Frey Creek, 1.25 trail mi. from the trail head at the end of Bryant Ravine Rd. 560 Comment
  CDA34639  Hypericum anagalloides L. Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  SEINET10839415  Hypericum anagalloides Mary Susan Taylor Taylor 321 Butte 61 Comment
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 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
  UC600533  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  CHSC104855  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
  CHSC42930  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC741  Hypericum perforatum H. Reid 1949-6-1 Butte Paradise. 548 Comment
  SEINET10472156  Hypericum perforatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4072 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  UC725510  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise Comment
  RSA137403  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22525 Butte State Highway 32, 6.9 miles south from Lomo, at junction with road from Butte Meadows 1037 Comment
  JEPS88861  Iris hartwegii subsp. hartwegii Carol A. Wilson 1992-5-18 92 -ph24 Butte 21 mi w Beldon (along Hwy 70, in Feather River Canyon); Feather River Canyon 426 Comment
  CHSC2205  Iris macrosiphon M. Roberson 1956-4-7 Butte SN of Paradise along Skyway. 426 Comment
  CHSC90620  Iris macrosiphon Chris Bradley 1988-4-18 13 Butte Honey Run Rd. ca. 8 miles ese of Chico; on roadside ca. 1 mile e of Covered Bridge. 121 Comment
  RSA21539  Iris macrosiphon Carl B. Wolf 1937-5-18 8725 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  RSA4657  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC46179  Isoetes howellii Lowell Ahart 1975-5-11 754 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC61874  Isoetes nuttallii Lowell Ahart 1980-5-17 2271 Butte 1/2 mi. south-east of Hurleton 600 Comment
  CAS-BOT-BC61880  Isoetes nuttallii John Thomas Howell 1976-4-1 51530 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  CHSC87218  Isoetes nuttallii Lowell Ahart 2004-4-4 10717 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  SEINET10530327  Isoetes nuttallii Mary Susan Taylor 1980-5-31 Taylor 2773 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10874662  Isoetes nuttallii Mary Susan Taylor 1975-4-26 Taylor 516 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  UCD135924  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte In Valley Grassland, just E of Chico, NE corner of jct of Notre Dame Blvd and the Skyway. 68 Comment
  UCSB44160  Isoetes nuttallii Reisentz, Paul 1979-5-12 Butte Along road, 1.3 miles W on Lunt Rd. from Hwy 70. Comment
  CHSC78229  Isoetes orcuttii Lowell Ahart 2000-6-29 8585 Butte In the southwest part 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
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Oct 30 2007
  CHSC46423  Isolepis setacea Lowell Ahart 1989-5-28 6285 Butte In a large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC83671  Isolepis setacea John Dittes 2002-7-9 2 -13 Butte Northern High Sierra Nevada; Plumas National Forest, between Hartman Bar Ridge and Mountain Spring House Ridge, on slope above confluence of South Branch of the Middle Fork Feather River and Pinchard Creek, ca. 0.2 air miles south-southeast of Whisky Hill. 1280 Comment
  CHSC3283  Juglans californica var. hindsii M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  SEINET10938201  Juncus Mary Susan Taylor 1980-5-27 Taylor 2676 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC78326  Juncus articulatus Lowell Ahart 2000-7-11 8567 Butte On the sides of a dirt road, about100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) mortheast of Feather Falls. 1219 Comment
  JEPS113839  Juncus articulatus Lowell Ahart 2007-7-11 14286 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
  JEPS124272  Juncus articulatus subsp. articulatus Lowell Ahart 2015-11-18 20666 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC49605  Juncus balticus Vernon Oswald 1984-6-11 1284 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  JEPS98493  Juncus brachyphyllus Lowell Ahart 2000-6-27 8512 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  UC1562288  Juncus bufonius Lowell Ahart 1990-7-4 6545 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (along McCabe Creek); Lake Oroville, McCabe Creek 243 Comment
  CHSC59017  Juncus bufonius var. bufonius Lowell Ahart 1992-7-27 6864 Butte Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC78327  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-norhing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS114371  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 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
  JEPS114380  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  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
  RSA715584  Juncus bufonius var. bufonius L. Ahart 2005-4-14 11719 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD80374  Juncus bufonius var. bufonius CNPS SN Foothill Team 2005-4-15 SNFN 0081 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 50 m from the western boundary and ca. 70 m from the northern boundary. 85 Comment
  JEPS107948  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 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
  SEINET10472432  Juncus capitatus Lowell Ahart 1985-5-10 Ahart 4957 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  UC1562371  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  CHSC46623  Juncus dubius Vernon H. Oswald 1989-7-27 3900 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along the north fork of the creek. 1767 Comment
  CHSC96974  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 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
  CHSC99750  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  RSA726664  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  CHSC78336  Juncus ensifolius Lowell Ahart 2000-6-27 8523 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC47555  Juncus howellii Lowell Ahart 1984-7-19 4749 Butte In a small meadow, along Retson Road, about 1 1/2 miles southeast of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles northeast of Stirling City. 1371 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  SEINET10472447  Juncus howellii Lowell Ahart 1983-9-17 Ahart 4427 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CAS-BOT-BC110139  Juncus leiospermus var. leiospermus Clare B. Hardham 1978-4-17 21566 Butte Lava Table Mountain. Comment
  CHSC93476  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 405 Comment
  JEPS104274  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, ca 130 yd south of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 332 Comment
  JEPS110150  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 405 Comment
  CHSC113943  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte Near a small 'pond,' in the southwest part of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  UCD141760  Juncus patens J. W. Jones 1922-7-1 s.n. Butte Rice Station, Biggs. Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC64933  Juncus triformis Robin Ondricek-Fallscheer; Joe Molter 1995-6-23 177 Butte Cascade Range Foothills. BLM parcel along a drainage into Little Chico Creek ca. 0.75 mi ESE of Forest Ranch. 640 Comment
  JEPS113853  Juncus triformis Lowell Ahart 2007-6-12 14075 Butte Seeps, about 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC39333  Juncus trilocularis Lowell Ahart 1983-6-26 4135 Butte Along the edge of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC97123  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte On the south side a drainage ditch, on the north side of Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 22 Comment
  CHSC97204  Juncus usitatus Lowell Ahart 2007-7-27 14398 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  LA28295  Keckiella breviflora A. A. Heller; Howard S. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek) Comment
  RSA305774  Keckiella breviflora subsp. glabrisepala James R. Shevock 1972-5-19 1767 Butte Highway 70, north of Lake Oroville. 91 Comment
  CHSC62132  Keckiella breviflora var. glabrisepala B. Castro 1987-5-21 120 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  JEPS115826  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 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 461 Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  UC1562418  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte about 4.5 mi sw Oroville (about 0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  CHSC27996  Kelloggia galioides M. S. Taylor 1978-7-18 1678 Butte On W side of Hwy 32, ca. 1/4 mi N of Forest Ranch. 718 Comment
  RSA4161  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  CHSC37830  Kickxia elatine R. A. Schlising 1982-4-25 4235 Butte S of Paradise, ne of Lime Saddle and sw of Cape Horn. Off Pentz-Magalia Hwy. Comment
  RSA754386  Kickxia elatine L. Ahart 2009-7-3 15991 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CDA2213  Koeleria gerardi Sterling O. Mattoon 1971-4-27 Butte 6.9 miles east of Chico. 0 Comment
  CAS-BOT-BC340329  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 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
  CHSC28571  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2283 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CAS-BOT-BC340530  Lactuca serriola Lowell Ahart 1983-9-19 4457 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  SEINET10971245  Lactuca serriola Mary Susan Taylor 1979-11-11 Taylor 2283 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CAS-BOT-BC341292  Lagophylla glandulosa John Thomas Howell 1962-6-15 37486 Butte Magalia 731 Comment
  CHSC28482  Lagophylla glandulosa Robert Schlising 1979-8-17 3466 Butte Richvale vernal pools, 1/4 mi s jct Hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC341299  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC341317  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  CHSC90199  Lamium amplexicaule Robert Kissane 1989-4-23 18 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CHSC35653  Lasthenia californica R. E. Preston 1982-4-7 237 Butte W side of Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  CHSC65891  Lasthenia californica Vernon H. Oswald 1996-4-20 7395 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. In the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC8117  Lasthenia californica J. G. Moore 1969-4-13 74 Butte Pentz Rd., 200 yds. e of Hwy. 99, on s side of road. 60 Comment
  RSA20875  Lasthenia californica C. B. Wolf 1937-3-29 8336 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CAS-BOT-BC337908  Lasthenia californica H. F. Copeland 1929-5-4 s.n. Butte Canyon of Chico Creek Comment
  SEINET10473880  Lasthenia californica Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4282 Butte T20N R2E sw/nw sec 1. Shippee quad. SE corner of jct of Hwys 149 & 99, ca. l0 mi s of Chico. 225 ft. Valley Grassland. 68 Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC196261  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  CAS-BOT-BC354123  Lasthenia fremontii Ahart Lowell 1983-5-12 3974 Butte Valley Grassland. Red gravelly soil along the power line, about 0.5 mile NE of Highway 99 & Pentz Road. 65 Comment
  SBBG128738  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte small vernal pool, ca. 30 yards W of Easter Cross Parking Lot, Upper Bidwell Park, ca. 1 mi E of Chico 89 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
  JEPS95616  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte 3 1/2 air miles NW of Oroville (N of the corral, on N side of the bend in Cottonwood Road, about 1/4 mi W of Hwy 70) 57 Comment
  SEINET5327273  Lathyrus laetiflorus R. McKee 2013-5-21 26607 Butte U. S. Plant Introduction Garden. Comment
  CHSC38495  Lathyrus latifolius Vernon Oswald 1983-5-23 532 Butte Upper Bidwell Park, Chico, on the N side of Chico Creek at Bear Hole (1.0 mi E of the power lines). 109 Comment
  RSA0080126  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET5327335  Lathyrus sativus R. McKee 1913-5-29 17484 Butte U.S. Plant Introduction Garden, Chico Comment
  UC1561885  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC213294  Lathyrus sulphureus Mrs. H. C. Cantelow 1939-5-19 2438 Butte Near Brush Creek Ranger Station, E. of Oroville Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  JEPS124205  Lavandula Lowell Ahart 2015-4-11 20027 Butte About 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south Oroville. Comment
  CDA4996  Lavatera cretica L. Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 /14 miles (air) northwest of Honcut, about 1 mile south of Oroville. Comment
  CHSC10597  Layia fremontii Lowell Ahart 1967-4-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  CHSC52966  Lemna gibba Vernon H. Oswald 1991-2-23 4470 Butte Chico Sewer Treatment Plant on River Rd, ca. 4.5 mi w of Chico. In an irrigation ditch along the west boundary of the treatment plant. 39 Comment
  CHSC78401  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC215736  Lepechinia calycina Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC48320  Lepidium appelianum Vernon Oswald 1987-5-3 2365 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC4516  Lepidium nitidum C. Glascock 1965-3-2 271 Butte At side of Chico Canyon Rd. ca. 1/2 mi. from its intersection with E 8th St., Chico. Comment
  CHSC103657  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 -A 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
  SEINET10907332  Lepidium perfoliatum Lowell Ahart 1985-4-1 Ahart 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC101269  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC65685  Lepidium strictum Vernon H. Oswald 1996-3-22 7248 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 7.2. Ranch and levee roads at this location. 33 Comment
  UC1594692  Lepidium strictum Vernon H. Oswald and Lowell Ahart 1992-3-24 4886 Butte near Oroville (at the junction of Burma and Cherokee roads, on w side of Thermalito Diversion Pool, in parking area); Lake Oroville Recreation Area 74 Comment
  SEINET10874435  Lepidium strictum Lowell Ahart 1983-4-10 Ahart 3929 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS128618  Leptochloa fusca subsp. uninervia Lowell Ahart 2017-8-8 21655 Butte Waste area on east side of Palermo Honcut Highway, south of intersection of Palermo Honcut Highway and Palermo Road, in Palermo. Comment
  CHSC31882  Leptosiphon acicularis L. Ahart 1974-4-11 361 Butte Peter Ahart Ranch, Honcut. 45 Comment
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Jul 19 2018
  CHSC113227  Leptosiphon bicolor Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC1279  Leptosiphon ciliatus V. Holt 1935-5-1 Butte Butte Creek canyon. 106 Comment
  CHSC29965  Leptosiphon harknessii R. A. Schlising 1980-6-30 3800 Butte Margin of meadow at Butte Meadows junction of Humboldt Road and Skyway. 1341 Comment
  POM183144  Leptosiphon harknessii H. F. Copeland 1930-7-26 1307 Butte Jonesville. 1677 Comment
  SD62438  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  JEPS108726  Lessingia nemaclada Lowell Ahart 2006-9-28 13362 Butte At the end of the dirt road, about 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 480 Comment
  CAS-BOT-BC341785  Lessingia nemaclada John Thomas Howell 1959-9-20 34718 Butte At Pulga bridge, Feather River Highway Comment
  SEINET10874388  Leucothoe davisiae Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4179 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
  UCD101649  Lewisia rediviva Clyde L. Elmore 1962-4-8 27 Butte 100 feet south of Table Mountain road, northeast of Oroville. 365 Comment
  CAS-BOT-BC444382  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte On the flat top of Table Mountain 304 Comment
  CDA43061  Ligustrum sinense L. P. Janeway, B. Castro 2010-6-4 9993 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. Comment
  CHSC106598  Ligustrum sinense L. P. Janeway; B. Castro 2010-6-4 9993 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. 75 Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CHSC46236  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-5 1073 Butte Ca 7 km n of Inskip, ca 0.4 km s of Bull Hill Rd., along Coon Creek. 1500 Comment
  LA22091  Lilium washingtonianum E. B. Copeland; 1931-7-12 615 Butte Jonesville 1600.0 Comment
  UCD22645  Limnanthes douglasii Joseph Laferriere 1982-4-18 2 Butte Table Mountain, 5 miles north of Oroville on Cherokee Road, near creek. 396 Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  JEPS119683  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC203549  Limnanthes douglasii subsp. rosea A. A. Heller 1914-3-23 11224 Butte in low hills 8 mi n Oroville Comment
  HSC43353  Limnanthes douglasii subsp. rosea Maralyn O'Meara 1974-4-20 265 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  CHSC102548  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-31 Butte Northern Sacramento Valley. Near the base of the foothills in-between where Wookey Road and Munjar Road terminate. 97 Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  CHSC2480  Linanthus dichotomus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. On top of ridge. 457 Comment
  UC124911  Linanthus dichotomus Mrs. R. M. Austin May 1883 32 Butte Comment
  SEINET10496799  Linanthus filipes Mary Susan Taylor 1974-4-20 Taylor 181 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  SEINET12319548  Linanthus filipes Unknown 1978-1 2 Butte 3 mi NE of Butte Creek bridge between Chico and Paradise Comment
  SEINET12332636  Linanthus filipes S. S. Khan 1988-1 43 Butte North Table Mountains, ca 100 yds W of Table Mountain-Cherokee Rd, ca 6 mi N of Oroville 244 Comment
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC27988  Linanthus pungens M. S. Taylor 1978-7-18 1699 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  JEPS113498  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville Comment
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC76029  Lindernia dubia var. dubia Vernon H. Oswald 1999-8-29 9839 Butte Gravel bar on the east side of the Sacramento River downstream from Ord Ferry Bridge at the northwest corner of Rancho Llano Seco. 28 Comment
  CHSC61653  Listera convallarioides Lowell Ahart 1993-9-13 7228 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC36175  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1987-9-18 5885 Butte along the dirt road, about 1/2 mile west of Pinkard Creek, 1.5 miles west of the Sly Creek Reservoir 1097 Comment
  SFV856  Lithocarpus densiflorus var. echinoides F. C. Raney 1964-9-10 s. n. Butte Sierra Nevada 10 miles northeast of Feather Falls. Comment
  SEINET10477992  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1979-3-31 Taylor 1969 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  CHSC1655  Lithophragma parviflorum var. trifoliatum B. Hetherington 1935-3-27 Butte Foothills. Comment
  CAS-BOT-BC428444  Lithophragma trifoliatum John Thomas Howell 1978-4-17 52845 Butte Table Mountain. 381 Comment
  SEINET10483079  Lithophragma trifoliatum Mary Susan Taylor 1980-4-6 Taylor 2435 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  UC480673  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville Jonesville (<rocky point above hotel>) 1676 Comment
  CHSC91001  Logfia gallica Lowell Ahart 2005-5-7 11787 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC101666  Lolium multiflorum Lowell Ahart 2009-4-26 15639 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC94679  Lolium multiflorum Lowell Ahart 2006-9-28 13382 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS107335  Lolium multiflorum Lowell Ahart 2005-4-2 11698 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
  JEPS103519  Lolium perenne Lowell Ahart 2002-6-2 9675 Butte Drainage, E of the large exposed drain pipe, road cut on the S side of Lumpkin Road, ca 1 mile NE of the intersection of Lumpkin Road and Forbestown Road, ca 12 miles (air) E of Oroville. 548 Comment
  CHSC1966  Lomatium macrocarpum A. Goekler 1929-4-21 Butte Bidwell Park. 60 Comment
  CHSC42613  Lomatium macrocarpum Vernon Oswald 1985-4-16 1720 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. Comment
  CHSC107393  Lomatium marginatum Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  JEPS120528  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km sutheast of Rim Road / Ponderosa Way. Comment
  JEPS127215  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC87443  Lomatium utriculatum R. D. Fischer 2004-3-28 77 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 500 ft south of Pine Trail junction. 399 Comment
  JEPS26742  Lomatium utriculatum P. C. Hutchison 1961-6-9 2092 Butte 7 mi. s. Jarbos Gap (n. fork Feather R. along Hwy. U.S. Alt. 40); n. fork Feather R. Comment
  RSA4160  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville. 1550 Comment
  UC426973  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CDA18830  Lonicera hispidula Riley, Ranft 1999-6-28 PDR 1145797 Butte along N/S Forbestown Rd, 1.4 mi E of Black Bart Rd., Oroville. 0 Comment
  JEPS103289  Lonicera hispidula var. vacillans Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  RSA339134  Lonicera hispidula var. vacillans Margaret J. Williams, W. Roderick 1984-5-25 84- 23 -1 Butte Feather River Canyon, Hwy 70, 1.5 miles W of Poe Power Dam. 457 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
  CHSC88995  Lonicera involucrata H. Gray 1999-6-4 Butte Plumas National Forest. Swamp off Zink Road. 731 Comment
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  RSA755764  Lotus corniculatus L. Ahart 2009-5-23 15748 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  JEPS87385  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  UC726261  Lotus denticulatus A. A. Heller 1940-5-13 15616 Butte 3 mi w Chico (along State Highway 32) Comment
  JEPS43471  Lotus humistratus Joan O. Danielson 1966-4-6 23 Butte just s Oregon Gulch Road (Cherokee Road) Comment
  UC726735  Lotus incanus A. A. Heller 1939-4-26 15387 Butte along the road leading down to The Feather River from Stirling Comment
  JEPS103533  Lotus purshianus var. purshianus Lowell Ahart 2002-6-21 9750 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  SEINET10874146  Lotus strigosus Lowell Ahart 1983-5-28 Ahart 4021 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC94571  Ludwigia palustris Lowell Ahart 2006-9-11 13333 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
  RSA0065261  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC24660  Lupinus albicaulis Keith Lickey 1976-4-9 55 Butte Hwy 70 ca 1 km ne of Concow Rd; on north shoulder. 609 Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road Comment
  CAS-BOT-BC201357  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49119 Butte Pentz - 1.7 miles east - Cherokee Road Comment
  CHSC30879  Lupinus albifrons var. albifrons J. D. Jokerst 1979-4-6 1184 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  UC864953  Lupinus albifrons var. albifrons A. A. Heller 1938-4-23 15050 Butte between the Las Plumas Road and the summit on Highway #24, 20 mi e Oroville; e of Oroville 762 Comment
  CAS-BOT-BC196254  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  CHSC87794  Lupinus arbustus Paul Maslin 2004-4-6 11 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  CHSC90362  Lupinus bicolor Andy Winkler 1980-4-15 4 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  UCD107158  Lupinus bicolor J. Doty 1969-4-1 621 Butte on east side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. 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
  JEPS107276  Lupinus bicolor var. pipersmithii Lowell Ahart 2005-4-18 11733 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
  CHSC36838  Lupinus latifolius var. columbianus M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  UC478506  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville , Colby Canyon (Coby Canyon) 1600 Comment
  CHSC90024  Lupinus microcarpus Keith Bunney 1991-4-21 1 Butte In empty lot n side of Hwy 162, 1.6 mi e of Hwy 99. 76 Comment
  CHSC78077  Lupinus microcarpus var. densiflorus Caleb E. Casey 1999-5-13 Butte Bear Hole, Upper Bidwell Park. Found on South side of Chico creek. 121 Comment
  CHSC75366  Lupinus microcarpus var. microcarpus Jennifer Slater 1997-4-12 17 Butte Upland area at the Wirlitzer addition of the Vina Plains Preserve, approx. one mile west of Hwy 99. 67 Comment
  SEINET10940184  Lupinus pachylobus Johnson 1978-4-16 Johnson 2 B Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset rd At lassen avenue, 3 mi n of chico. At edge of moist pasture in gravelly loam With grass and other annuals of valley grassland. 61 Comment
  POM219418  Lupinus sellulus var. artulus E. B. Copeland 1931-7-3 651 Butte Jonesville, Colby Canyon. 1600 Comment
  UC129305  Lupinus stiversii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC329253  Lupinus stiversii Lowell Ahart 1982-6-15 3547 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls. 1000 Comment
  CHSC90808  Lupinus succulentus Lowell Ahart 2005-5-2 11757 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
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of 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
  RSA718093  Luzula comosa L. Ahart 2006-7-16 12970 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC52709  Luzula comosa var. laxa L. P. Janeway 1988-6-19 2840 Butte 3.3 mi N of Stirling City toward Inskip, along logging road 0.2 mi W of Skyway. Seepy area adjacent to the road. 1219 Comment
  JEPS121974  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  SEINET3872267  Luzula comosa var. laxa Lowell Ahart 2010-9-21 17203 Butte About 1/5 of a clump, on damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek; about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. Red FIr Forest.; 0 1918 Comment
  UC398896  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC44528  Luzula macrantha Lowell Ahart 1988-3-27 5940 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 335 Comment
  CHSC47583  Luzula macrantha Lowell Ahart 1975-3-23 717 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CAS-BOT-BC441207  Luzula macrantha Lowell Ahart 1988-3-27 5940 Butte Aboaut 1/10 mile N of the bridge across the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 335 Comment
  SEINET10472425  Luzula parviflora Lowell Ahart 1991-8-25 Ahart 6705 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Road) just south of Jordan Creek, east of Oroville-Quincy Hwy, ca 5.75 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/SW/S14. 1082 Comment
  CDA31936  Lychnis coronaria L. Ahart 2009-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 air miles northeast of Oroville. Comment
  JEPS114701  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, about 400 yds SW of the cemetery, about 10 mi (air) NE of Oroville 305 Comment
  CHSC43841  Lycopus americanus B. Castro 1987-8-25 208 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99, ca 2.1 mi s of Skyway in Chico. 68 Comment
  CHSC66668  Lycopus americanus Vernon H. Oswald; Lowell Ahart 1996-7-22 8079 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 mile Lane and the Sacramento River. Common along tules on the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  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
  SEINET10498037  Lycopus americanus Mary Susan Taylor 1975-10-3 Taylor 934 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
  CHSC27923  Lythrum hyssopifolia M. S. Taylor 1977-11-10 1519 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico, on both sides of Chico-Butte Hwy. 30 Comment
  UC1609425  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  SEINET11268343  Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte About 1/2 miles west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville.; 0 43 Comment
  UC1609282  Lythrum tribracteatum Lowell Ahart 1993-5-15 6938 Butte about 2 mi w of Biggs (on n side of Biggs Princeton Road); Biggs Princeton Road 30 Comment
  UC1609068  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC46954  Madia elegans subsp. densifolia Lowell Ahart 1977-9-20 1581 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  UCR66543  Madia exigua L. S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  JEPS108733  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  SEINET3450908  Madia gracilis Unknown 2003-6-30 10323 A Butte Forbestown, Forbestown, about 2 miles air northwest, southeast side of Ponderosa Way, about 2.5 miles by road southwest of the Ponderosa Dam 570 Comment
  UCD134332  Madia gracilis Collector Unknown Date Unknown 12816 Butte Butte Meadows. Comment
  POM219437  Madia gracilis subsp. gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  RSA725049  Madia madioides L. P. Janeway 2007-6-11 9038 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  CAS-BOT-BC345234  Madia subspicata Lowell Ahart 1982-5-28 3438 Butte Sutter Buttes Area. Near North Honcut Creek, near the Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut 50 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
  CDA38815  Malva parviflora L. Ahart 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  JEPS87781  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte about 7 mi n Oroville (garden area at ne corner of Oregon City School, Oregon City); Oregon City 365 Comment
  CHSC32667  Marah watsonii M. S. Taylor 1981-3-24 3443 Butte S side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  SEINET10474307  Matricaria matricarioides Mary Susan Taylor 1981-5-15 Taylor 3743 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  RSA715569  Medicago praecox L. 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 Ord bend, about 12 miles (air) southwest of Chico. 26 Comment
  CDA4226  Medicago scutellata P. B. Kennedy 1924-1 Butte Chico. 0 Comment
  CHSC113424  Melica aristata Lowell Ahart 2014-7-7 19559 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS95061  Melica aristata Lowell Ahart 1997-8-1 7804 Butte about 6 air mi ne of Stirling City (on s side of the County Road, sw of Keyser Creek, about 1 1/2 mi se of Bald Mountain); County Road 1432 Comment
  UC600750  Melica aristata H. F. Copeland 1932-7-19 Butte Jonesville Butte Creek Canyon (Butte Creek Canyon) 1550 Comment
  UCD67023  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  UCD67024  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  JEPS110457  Melica bulbosa Lowell Ahart 2006-7-16 13009 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
  UCD86345  Melica bulbosa Copeland 1931-6-22 606 Butte Jonesville. 609 Comment
  CAS-BOT-BC269374  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
  SEINET10508155  Melica californica Mary Susan Taylor 1982-5-21 Taylor 4490 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
  UC1609152  Melica geyeri Vernon H. Oswald and Lowell Ahart 1993-4-19 5282 Butte ene of Magalia (Rattlesnake Creek Trail, between Jordan Hill Rd and Sawmill Pk Lookout, along the lower part of the trail between the creek and the lookout) 719 Comment
  CAS-BOT-BC281305  Melica harfordii John Thomas Howell 1967-6-22 42647 Butte 3 miles NE of Pulga Bridge - Canyon of the Feather River N Fork Comment
  CDA13298  Melica harfordii G. F. Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Plumas National Forest; Common colonies on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CHSC41167  Melica harfordii L. P. Janeway; Gary Benson 1984-7-17 Butte Plumas N.F. ECOS plot 11-001. Slope on east side of French Creek. 685 Comment
  RSA4653  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1550 Comment
  SEINET10959868  Melica subulata Edwin B. Copel 1929-7-16 Copeland 338 Butte Jonesville, Butte County. 1550 Comment
  CAS-BOT-BC262505  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CHSC5965  Melilotus albus M. MacArthur 1968-6-17 150 Butte SE side Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  CHSC80644  Melilotus officinalis Lowell Ahart 2001-6-13 8817 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 miles east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC1586473  Melilotus officinalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4734 Butte Forest Rd No 23N60 (Jordan Creek-Marble Creek Rd) 2.1 mi e junction with Oroville-Quincy Hwy (ca 5.75 air mi ne of Brush Creek) 1082 Comment
  CDA30212  Melissa officinalis L. Ahart 2009-7-9 16014 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CDA42940  Mentha arvensis L. Ahart 2012-10-2 18495 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA724861  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy. 162. 41 Comment
  CHSC42940  Mentha spicata Lowell Ahart 1987-7-12 5819 Butte On a sand bar along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 64 Comment
  CHSC43845  Mentha spicata B. Castro 1987-8-25 206 Butte Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  SFV16939  Mentha spicata J. N. Hogue 1980-9-6 83 .8 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  RSA4233  Mentzelia dispersa E. B. Copeland 1929-7-19 s.n. Butte Jonesville. Along Butte Creek. 473 Comment
  UC1564735  Menyanthes trifoliata V. Oswald and L. Ahart 1989-7-21 3884 Butte 0.5 mi ne of Snag Lake (2.5 air mi se of Jonesville, just ne of West Branch Feather River, paralleling Humbug Road) 1780 Comment
  CHSC28950  Mertensia ciliata var. stomatechoides M. S. Taylor 1978-7-19 1755 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC428763  Micranthes californica Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC1678  Micranthes integrifolia V. Holt 1935-3-30 Butte Chico Creek ridge. 304 Comment
  CHSC41285  Micranthes oregana S. C. Morey 1983-7-21 504 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC71108  Micropus californicus Jan Monelo 1989-4-11 8 Butte Ca 50 yds e of Covered Bridge, ca 7 mi e of Chico. 121 Comment
  POM57377  Micropus californicus A. A. Heller, H. E. Brown 1902-5-6 5460 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC39531  Micropus californicus var. californicus Lowell Ahart 1983-6-12 4043 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte 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
  JEPS108852  Micropus californicus var. californicus Lowell Ahart 2006-5-10 12624 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  RSA697049  Microseris acuminata L. Ahart 2003-4-8 10037 Butte About 200 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 325 Comment
  SEINET10474314  Microseris douglasii Lowell Ahart 1985-4-29 Ahart 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC348875  Microseris douglasii subsp. douglasii Lowell Ahart 1976-4-14 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CHSC24988  Microsteris gracilis M. Coulon 1974-3-3 39 Butte Located along the w side of Cohasset Road approx. 10 miles n of Chico, near Seven Toed Petes Wildlife refuge. Comment
  SEINET12319567  Mimulus angustatus C. A. Gardner 1974-1 14 Butte Table Mountain, ca 6 mi N of Oroville 244 Comment
  SEINET10570194  Mimulus bicolor Mary Susan Taylor 1986-5-6 Taylor 5619 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  JEPS115712  Mimulus cardinalis Lowell Ahart 2009-8-3 16261 Butte Along a small drainage, about 50 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 209 Comment
  JEPS109856  Mimulus glaucescens Dean W. Taylor 2006-6-28 19554 Butte West Branch Feather River; growing on the diversion dam and nearby cliffs just upstream from the Reston Road Bridge, vicinity of Striling 993 Comment
  JEPS119594  Mimulus glaucescens Lowell Ahart 2012-4-9 17850 Butte About 50 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS5545  Mimulus glaucescens R. F. Hoover 1937-5-18 2235 Butte 3 mi n Chico Comment
  SFV3381  Mimulus glaucescens B. Fuller 1962-5-26 Butte Sierra Nevada Paradise. Lot 55, Harrison Road. 520 Comment
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  SEINET12319563  Mimulus glaucescens S. E. Patton 1978-1 19 Butte 7.5 mi NE of jct Eaton Rd, S side of Cohosset Hwy 280 Comment
  LA209359  Mimulus guttatus E. B. Copeland; 1929-7-28 sn Butte Jonesville 1500.0 Comment
  POM43694  Mimulus guttatus C. C. Bruce 1897-05 2104 Butte Iron Canyon Comment
  SEINET10570356  Mimulus guttatus Mary Susan Taylor 1975-4-26 Taylor 534 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET5561543  Mimulus guttatus H. S. Gentry, S. Koch 1962-1 19782 Butte 6 mi. NE of USDA Field Station, Chico, along road to Centerville. Comment
  UCSB63617  Mimulus guttatus Mallen, Pamela 1987-4-10 Butte on Table Mt. ca. 100 yds w of Cherokee Ed.,6.3 mi ne of Table Mt Blvd, Oroville; Cherokee Quadrangle, 15 min. T20N R2E 426 Comment
  UC103777  Mimulus kelloggii Mrs. R. M. Austin May 1896 157 Butte Iron Canyon Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  HSC85965  Mimulus kelloggii J. Hunter 1986-3-21 31 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  JEPS98344  Mimulus layneae Lowell Ahart 2000-6-27 8510 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  UC660023  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  UCD96094  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-5-3 813 Butte About 2.25 miles from Bardees Bar Road junction on forest service road 22N37. 328 Comment
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 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
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  SD2102  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville, damp woods 1500 Comment
  CAS-BOT-BC433047  Mitella pentandra Vernon Oswald; Lowell Ahart 1987-7-1 3087 Butte Ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  JEPS122251  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CAS-BOT-BC219951  Monardella breweri subsp. lanceolata Lowell Ahart 1984-5-28 4652 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  SEINET10498922  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4134 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
  SEINET10968986  Monardella lanceolata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4652 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10498944  Monardella odoratissima subsp. glauca Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4083 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC11987  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville. 1550 Comment
  JEPS105012  Monardella odoratissima subsp. pallida Dean W. Taylor 1995-8-6 15386 Butte Rocky Ridge, north end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest; Northern Sierra Nevada 975 Comment
  SD6870  Monardella odoratissima subsp. pallida unknown 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC220457  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC43017  Monardella sheltonii L. P. Janeway 1987-6-8 2178 A Butte 5.7 mi south of Big Bar Mtn (via rd). 792 Comment
  CHSC96829  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  UC600488  Montia chamissoi H. F. Copeland 1932-6-27 Butte in and at edge of Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows Comment
  CHSC32764  Montia fontana subsp. amporitana J. D. Jokerst 1981-3-29 1272 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  SEINET10572673  Montia parvifolia Mary Susan Taylor 1976-5-5 Taylor 1114 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CAS-BOT-BC260540  Muhlenbergia filiformis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mountain region located ca 6 air miles SE of Jonesville 1996 Comment
  CHSC64259  Muhlenbergia filiformis S. C. Morey 1983-8-1 650 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. Meadow. 1292 Comment
  SEINET4343727 Image available Muhlenbergia filiformis Unknown 2009-11-19 16546 Butte Meadow in Foothill Woodland; About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Par about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CDA30213  Muhlenbergia mexicana L. Ahart 2009-7-9 16023 Butte On the east edge 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. Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CHSC44381  Myosotis discolor Lowell Ahart 1988-6-23 6080 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS113276  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 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
  POM99618  Myosurus minimus var. filiformis C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CHSC44208  Myriophyllum hippuroides Vernon Oswald 1988-7-4 3550 Butte Rancho Llano Seco. 7-Mile Lane 0.7 mi n of Nelsoon West Rd. Marshy slough. 30 Comment
  CHSC48458  Myriophyllum spicatum Vernon Oswald 1988-8-15 3690 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 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
  CHSC49675  Najas guadalupensis V. Oswald 1988-6-8 3360 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  UC1100009  Najas guadalupensis Verne Grant, Herbert L. Mason 1946-9-29 13143 Butte w of Biggs Comment
  CHSC112730  Najas guadalupensis subsp. guadalupensis Lowell Ahart 2013-10-16 19116 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC13808  Nassella pulchra J. G. Moore 1969-4-18 11 Butte Along side road on Cherokee Rd. 2.5 mi. s of Hwy. 70. 365 Comment
  CHSC39504  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  SBBG17025  Nasturtium officinale M. Vincent 1962-4-18 210 Butte Butte Crk Cyn near Humbug Rd, 1 mi E of old covered bridge Comment
  CHSC35113  Navarretia capillaris R. A. Schlising; R. Banchero 1980-8-1 3955 Butte N part of county, on dirt road just north of Philbrook Lake. Comment
  CHSC42498  Navarretia capillaris Lowell Ahart; Vern Oswald 1987-6-10 5746 Butte Around a meadow, at Sunflower Flat, about 2 1/4 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  UC1609052  Navarretia divaricata Lowell Ahart 1993-7-29 7125 Butte 6.5 mi ne Stirling City (2.5 mi ne of Bald Mountain, .12 mi n of the Snow Mine, on the e side of an old water ditch for gold mining) 1676 Comment
  SEINET10496822  Navarretia divaricata subsp. vividior Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4729 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
  CHSC38599  Navarretia filicaulis Vernon Oswald 1983-6-5 635 Butte Upper Bidwell Park, Chico, on the North Rim Trail ca. 800 ft w of its eastern terminus. 414 Comment
  CHSC55393  Navarretia intertexta L. P. Janeway 1991-6-8 3999 Butte Upper reach of Spring Hollow (between Montgomery Bar Ravine and Oregon Gulch). On dirt road adjacent to spring. 365 Comment
  CHSC102608  Navarretia intertexta subsp. intertexta L. P. Janeway; B. Castro 2009-7-4 9841 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC34014  Navarretia intertexta subsp. propinqua L. Ahart; M. S. Taylor 1981-8-15 3034 Butte On bottom of wash that runs into the n end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  POM129395  Navarretia leptalea Mrs. R. M. Austin 1896-07 258 Butte Colby Comment
  SEINET10496835  Navarretia pubescens Mary Susan Taylor 1980-5-31 Taylor 2758 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  UC133838  Navarretia pubescens Mrs. R. M. Austin Apr 1883 268 Butte Comment
  CHSC28133  Navarretia tagetina J. D. Jokerst 1979-5-6 217 Butte Ca. 200 yds. nw of Rock Creek (w intersection of Rock Creek Road and Cohasset Hwy.). 106 Comment
  UCD18876  Navarretia tagetina Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 184 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  CHSC50992  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC31113  Nemophila heterophylla Herb Allan McLane 1980-4-25 18 Butte Plumas National Forest, n of Ponderosa Way, MDM. 377 Comment
  HSC43096  Nemophila heterophylla Maralyn O'Meara 1974-4-20 3000 Butte Table Mtn. 305 Comment
  JEPS115283  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  POM252968  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte On a roadside bank sheltered by a stone wall on the Cohasset Road beyond the Richardson Springs road. Comment
  CHSC62466  Nemophila maculata B. Castro; L. Janeway 1991-4-19 442 Butte Ca 10 air mi NE of Oroville, 0.75 mi NW of Oregon Gultch, 0.5 mi S of Montgomery Bar Ravine. 353 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC109122  Nemophila pedunculata Lowell Ahart 2012-3-23 17789 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
  CDA953  Nerium oleander D. G. Kelch 2006-8-2 6 .352 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC66446  Nicotiana acuminata var. multiflora Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 .1 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
  JEPS117526  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  CDA5774  Nicotiana acuminata var. multiflora L. Ahart, Vernon Oswald 1999-8-13 8135 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC400071  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CDA3528  Nymphaea odorata G. D. Barbe 1975-6-4 2030 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  CHSC39922  Onobrychis viciifolia M. S. Taylor 1982-6-24 4734 Butte At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt. ca 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  SEINET12164650  Onobrychis viciifolia M. S. Taylor 1981-1 3799 Butte T23N R5E sw1/4Sw1/4 Sec 29. Pulga Quad. N of Flea Valley Crk drainage + Pulga, ca5airmiE of Magalia 1067 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  CHSC26855  Oreostemma alpigenum var. andersonii M. S. Taylor; M. Hayes 1978-6-24 1667 Butte On N side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  CHSC1167  Orobanche fasciculata V. Holt 1935-5-26 Butte Humboldt Road. Comment
  CAS-BOT-BC500247  Orobanche uniflora subsp. occidentalis Lowell Ahart 1965-4-11 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SEINET10549646  Orthocarpus attenuatus Mary Susan Taylor 1976-3-9 Taylor 1024 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  POM298005  Orthocarpus erianthus A. A. Heller 1913-4-6 10717 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  CHSC104808  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 455 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  SEINET10454522  Osmorhiza chilensis Mary Susan Taylor 1980-7-6 Taylor 3082 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  JEPS104471  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  RSA724822  Oxypolis occidentalis L. Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows 1561 Comment
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC316887  Packera eurycephala var. lewisrosei A. Heller 1938-5-28 15115 Butte 23 miles from Oroville on Highway 24. Comment
  HSC6152  Packera eurycephala var. lewisrosei L. S. Rose 1967-6-11 67103 Butte 3 mi. S of Pulga, Feather River Canyon Comment
  UC1972927  Packera eurycephala var. lewisrosei Catherine Schnurrenberger 2011-7-8 Butte Near Flea Mountain, off of Rim Road approx. 1 air mi N of Hwy 70 on and around the access road to the transmission line. 914 Comment
  CHSC71269  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte South margins of a stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SEINET10607444  Panicum bulbosum A. Arthur Heller 1916-9-30 Heller 12665 Butte Hills S miles north of Oroville in culivated ground where it occurs sparingly. Comment
  CHSC97773  Panicum capillare Lowell Ahart 2007-10-31 14513 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
  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
  SEINET10507765  Panicum pacificum Mary Susan Taylor 1978-7-21 Taylor 1839 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC32122  Parentucellia viscosa L. Ahart 1976-5-25 1129 Butte Along edge of Cox Lane; near Honcut. 33 Comment
  CHSC90963  Parentucellia viscosa L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  CHSC26446  Paspalum dilatatum P. Moyer 1971-10-24 49 Butte CSUC Campus. South bank of Chico Ck. behind Archeology Bldg. 'B'. 60 Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  CHSC3008  Paulownia tomentosa Carl Pejsa 1958-4-19 88 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC202817  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 5 miles north-east of Oroville 609 Comment
  CHSC54095  Pectocarya pusilla Vernon H. Oswald; Lowell Ahart 1991-5-13 4580 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC63242  Pectocarya pusilla Lowell Ahart 1994-4-22 7285 Butte In a small meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC94245  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  CHSC49020  Pedicularis densiflora Vernon Oswald 1984-4-9 1123 Butte Feather Falls Trail, 0.6 trail mi n of the trail head at the end of Bryant Ravine Rd. 731 Comment
  CAS-BOT-BC71199  Pellaea andromedifolia John Thomas Howell 1962-6-16 37620 Butte Nelson Bar 213 Comment
  CHSC40285  Pellaea brachyptera Lowell Ahart 1985-6-17 5054 Butte Lumpdin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CAS-BOT-BC67600  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC28881  Pellaea mucronata M. S. Taylor 1980-2-24 2323 Butte On the east branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  SEINET10834167  Pellaea mucronata Mary Susan Taylor 1981-1-5 Taylor 3369 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  UC1562446  Penstemon deustus Lowell Ahart 1990-6-1 6505 Butte about 2 air mi se Jarbo Gap (on the e side of the North Fork of the Feather River, near the Poe Power House); e side North Fork Feather River, se of Jarbo Gap 274 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  RSA0045598  Penstemon laetus subsp. leptosepalus Lowell Ahart 2011-7-9 17570 Butte 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
  RSA700217  Penstemon laetus var. leptosepalus L. Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  POM43769  Penstemon laetus var. leptosepalus C. C. Bruce 1898-06 2415 Butte Forest Ranch. Comment
  CHSC99580  Penstemon neotericus L. P. Janeway 2008-6-15 9411 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  CHSC32827  Penstemon newberryi W. M. Foster 1981-4-17 6 Butte Straddling the Butte and Plumas County line and Hwy. 70, ca. 27 mi n of Oroville. 487 Comment
  UC725651  Penstemon newberryi var. newberryi A. A. Heller 1942-5-8 16445 Butte Feather River Hwy, a few feet from the Plumas Co. line Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  CHSC28892  Pentagramma triangularis M. S. Taylor 1979-4-5 1991 Butte Millsap Bar Campground, ca. 9 mi ne of jct Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC77132  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-7-29 4241 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC28409  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-9-28 2201 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC29723  Pentagramma triangularis subsp. semipallida J. D. Jokerst 1980-4-17 587 Butte Top of North Table Mt, northern most edge. 472 Comment
  CHSC84394  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the west side of Encina Grande Road, about 50 yards southeast of Truman Journey Way, about 2 miles (air) southeast of of Bloomer Hill, about 6 miles (air) northeast of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  UC1312882  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC40308  Perideridia lemmonii Lowell Ahart 1985-8-11 5160 Butte Along the south side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC96925  Perideridia lemmonii Lowell Ahart 2007-7-8 14267 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  SEINET10454553  Perideridia lemmonii Lowell Ahart 1985-6-30 Ahart 5083 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC76403  Persicaria hydropiper Lowell Ahart; Vernon H. Oswald 1999-10-3 8293 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
  CAS-BOT-BC413705  Persicaria hydropiper Lowell Ahart 1982-10-11 3864 Butte About 1/10 mile west of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC38691  Persicaria maculosa Vernon Oswald 1983-5-8 452 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CDA42947  Persicaria punctata L. Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  HSC32618  Petrorhagia dubia Dave Knorr 1974-4-20 118 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  RSA421517  Phacelia bicolor Unspecified 1897-1 s.n. Butte Sandy valley, open flats. Comment
  UC107479  Phacelia cicutaria Mrs. R. M. Austin May 1883 s.n. Butte Iron Canyon, above Chico 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
  UC1602019  Phacelia heterophylla subsp. virgata C. G. Albertus 1933-7-1 38 Butte Promontory Point Chico Quadrangle (s slope) Comment
  RSA32015  Phacelia imbricata subsp. imbricata A. A. Heller 1938-5-28 15111 Butte Near the Las Plumas road on the Feather River Highway. Comment
  SD4076  Phacelia procera E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CHSC48474  Phacelia purpusii Vernon Oswald 1983-6-22 733 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. 1158 Comment
  CHSC40778  Phacelia racemosa Lowell Ahart 1985-7-16 5146 Butte On damp fine soil along Willow Creek, near the Section corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  CHSC20453  Phalaris caroliniana Dave Isle 1969-4-18 372 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500+ yards W. of road on Table Mtn.). 289 Comment
  CAS-BOT-BC259044  Phalaris lemmonii Lowell Ahart 1980-5-10 2237 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC75338  Phalaris lemmonii Lowell Ahart 1999-5-21 8069 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  CHSC44459  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  UC436290  Phlox diffusa E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  JEPS114181  Phlox speciosa subsp. occidentalis L. P. Janeway 2007-5-6 8969 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  SEINET12230317  Phoradendron bolleanum M. S. Taylor 1975-1 918 Butte 1/2 mi N of Magalia, 50 ft. E of the Skyway 610 Comment
  CHSC85727  Phoradendron densum G. F. Hrusa; T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada. Near summit of serpentine slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 750 Comment
  UCR7829  Phoradendron densum Wm. Horn Jr. 1964-7-6 640706- 3 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  CAS-BOT-BC141249  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2621 Butte Little Bald Rock 335 Comment
  POM105948  Phoradendron villosum C. C. Bruce 1897-03 1786 Butte Little Chico Comment
  UCD126004  Physalis lancifolia Beecher Crampton 1957-9-17 4616 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  POM90682  Physocarpus capitatus C. C. Bruce 1898-05 1812 Butte Butte Creek. Comment
  SFV11547  Pickeringia montana M. L. Vincent 1963-6-10 418 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC29003  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte Just e of Chico. Ne corner of jct of Notre Dam Blvd and the Skyway, ca 1/8 mi of Hwy 99. 68 Comment
  UC1562400  Pilularia americana Lowell Ahart 1990-4-23 6465 Butte ca. 1 mi s Oroville Airport (ca. 1/2 mi e of Larkin Rd.) 45 Comment
  SEINET10530358  Pilularia americana Mary Susan Taylor 1979-5-6 Taylor 2002 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  JEPS104187  Pinus jeffreyi Lowell Ahart 2003-10-17 10641 Butte In rock pile ca 25 yd n of Humboldt Peak, ca 1/2 mi e of Humboldt Summit, ca 8 mi (air) ne of Butte Meadows. 2154 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  CHSC31514  Pinus ponderosa L. Ahart 1976-2-15 1007 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut 53 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  CDA13729  Piperia leptopetala G. F. Hrusa, T. D. Wilfred 1997-6-27 13907 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC61359  Piperia transversa Lowell Ahart 1993-7-22 7070 Butte On the east side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CHSC79625  Piperia transversa G. F. Hrusa; T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 820 Comment
  CAS-BOT-BC254403  Piptatherum miliaceum John Thomas Howell 1961-9-22 36763 Butte N Fork of Feather River, 10 miles from Oroville 121 Comment
  UC2026874  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 -A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC169827  Plagiobothrys Ira L. Wiggins 1411 Butte 3 1/2 mi E of Durham on Slate Land Colony Highway Comment
  CHSC28964  Plagiobothrys austiniae J. D. Jokerst 1980-3-7 475 Butte Top of ridge ca. 100 m E of Hwy 32, 1/4 mi S of the NW corner of section 11. 396 Comment
  UC725374  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte near Chico airpost 91 Comment
  POM64763  Plagiobothrys bracteatus E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  CHSC28989  Plagiobothrys canescens J. D. Jokerst 1979-4-28 206 Butte Adjacent to Rock Cr, 150 mets. N.W. of southern most intersection of Rock Cr. Rd. and Cohasset Hwy. 121 Comment
  CHSC40760  Plagiobothrys fulvus var. campestris Ahart; Jokerst 1985-5-10 4948 Butte On the sides of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC29275  Plagiobothrys glyptocarpus R. A. Schlising 1980-4-7 3556 Butte NE of Bangor, ca 1.1 mi NE junction of Ord-Bangor Hwy, along LaPorte Road. Streamside. Comment
  CHSC115399  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2015-3-27 19974 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 397 Comment
  CHSC35063  Plagiobothrys greenei R. A. Schlising 1981-4-11 4022 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  CHSC44480  Plagiobothrys greenei Lowell Ahart 1988-5-12 5995 Butte On the bottom of a mine hole, in a mined over area, 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
  POM252952  Plagiobothrys greenei A. H. Heller 1938-4-14 15024 Butte Along road near Wick s Corner north of Oroville. Comment
  CHSC29271  Plagiobothrys hispidulus R. A. Schlising 1980-6-2 3627 Butte Northern Butte Co., 0.1 mi s of jct Humboldt Road and Humbug/Skyway at Butte Meadows. 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
  CHSC90101  Plagiobothrys nothofulvus Rebecca L. Hill 1990-3-21 1 Butte Ca. 20 yds se of jct of Oroville Chico Highway and Mesa Road, on the e side of Oroville Chico Hwy, ca. 5.5 mi of Chico. 47 Comment
  JEPS119703  Plagiobothrys nothofulvus Lowell Ahart 2012-5-2 17973 Butte West of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. Comment
  CHSC48000  Plagiobothrys scriptus Vernon Oswald 1984-3-9 1092 Butte In a track on the w side of Calif. Hwy 99E ca. 100 ft s of Broyles Rd. 59 Comment
  CHSC87195  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  SEINET12249493  Plagiobothrys scriptus Unknown 1983-1 3918 Butte about 1 mi NE of Hwy 99 & Pentz Rd 65 Comment
  CHSC46252  Plagiobothrys shastensis Vernon Oswald 1989-3-30 3728 Butte Upper Bidwell Park, Chico. Along the North Rim Trail between Lookout Point above Horseshoe Lake and the double set of power lines. 182 Comment
  POM71349  Plagiobothrys stipitatus C. C. Bruce 1897-05 1928 Butte [No locality information provided] Comment
  SEINET12326940  Plagiobothrys stipitatus Unknown 1982-1 19 Butte on & near banks of Singer Ck, ca 1 mi W of Hwy 99 off Haille road, ca 12 mi N of Chico 61 Comment
  CHSC115203  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-5-5 20137 Butte Located on the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Themalito Afterbay, about 1 mile southwest of Oroville Airport, about 6 miles (air) southwest of Oroville. Valley Grassland. 42 Comment
  CHSC117424  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  JEPS105901  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  JEPS127037  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  RSA0114655  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2015-5-5 20137 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC66158  Planodes virginica Vernon H. Oswald; Lowell Ahart 1996-5-27 7655 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of marsh at the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC47459  Plantago elongata Lowell Ahart 1974-4-24 426 Butte Growing on the bottom of small vernal pools, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC108795  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about 1 mile (air) northeast of Chico. 143 Comment
  UC195449  Plantago erecta A. A. Heller 1914-4-14 11288 Butte 8 mi n Oroville Comment
  HSC43127  Plantago erecta Maralyn O'Meara 1974-4-20 280 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  RSA756695  Plantago erecta Barbara J. Ertter, Linda Vorobik 1986-4-13 5881 Butte NE arm of Lake Mendocino NE of Ukiah. North side of Highway 20. 366 Comment
  SEINET12319542  Plantago hookeriana Unknown 1980-1 12 Butte Chico, 50 ft N of Skyway, Sec 31 N of SE 37 Comment
  JEPS122066  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  JEPS94565  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  SEINET12030014  Platanus racemosa Unknown 1984-1 4535 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut, on Peter Ahart Ranch 50 Comment
  CAS-BOT-BC91590  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico. Comment
  CHSC3819  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Scattered along road bank ca 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC29796  Pleuricospora fimbriolata M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2868 Butte On trail embankment, to Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC30086  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft w of Old Humboldt Rd. 2011 Comment
  CAS-BOT-BC458150  Pleuricospora fimbriolata E. B. Copeland 1920-4-2 209 Butte Jonesville 1219 Comment
  UCD92193  Poa Robert E. Preston 1982-3-20 191 Butte along Hwy. 70, ca. 0.6 mile west of Cresta Power House. 451 Comment
  CHSC65692  Poa annua Vernon H. Oswald 1996-3-22 7251 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, N end of levee between Tracts 6 and 7.1. On the levee road. 33 Comment
  CHSC8573  Poa annua J. G. Moore 1969-5-7 22 Butte Salem St. between 7th and 8th Sts. on e side of road, Chico. 60 Comment
  CHSC9340  Poa annua B. Anthony 1968-4-1 403 Butte Lawn at Vets Village, Chico State College. Comment
  JEPS122193  Poa annua Lowell Ahart 2014-4-16 19367 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10822489  Poa annua Mary Susan Taylor 1975-4-6 Taylor 431 Butte Chico. NE corner of Arcadian and West 4th Avenue. 52 Comment
  CHSC105505  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC94258  Poa bolanderi Lowell Ahart 2006-7-16 12972 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
  RSA700238  Poa bolanderi L. Ahart 2004-7-23 11305 Butte On the east side of the road, North of the West Branch Campground, South of the bridge across the West Branch of the Feather River, About 1.5 miles (air) west of Philbrook Reservoir Dam., About 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  CHSC6681  Poa bulbosa Marilyn Lee 1968-3-8 113 Butte 1271 E. 1st Ave. in almond orchard, Chico. Comment
  CDA14074  Poa compressa G. F. Hrusa, T. D. Wilfred 1997-7-3 13957 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Rhizomatous perennial in moist, formerly disturbed areas at lake margin. Comment
  SEINET10507579  Poa compressa Lowell Ahart 1983-9-17 Ahart 4438 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC8574  Poa pratensis J. G. Moore 1969-4-21 23 Butte Next to sidewalk on 11th St. 20 yds. w of Oakdale St., Chico. 60 Comment
  CHSC9347  Poa pratensis B. Anthony 1968-4-16 461 Butte Chico State College Campus, entrance to Vets Village, Chico. Comment
  CHSC111144  Poa pratensis subsp. pratensis Lowell Ahart 2012-6-14 18188 Butte On the south side of the path, edge of the lawn, south side of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  JEPS106267  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  CHSC100189  Poa secunda subsp. secunda John Dittes 1992-5-5 465 Butte Sierra Nevada Range Foothills; ca. 2.6 air miles southeast of Paradise Civic Center, ca. 1.8 air mile west of West Branch of Feather River, ca. 1.3 air mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CHSC100913  Poa secunda subsp. secunda R. A. Schlising; R. Banchero 1981-5-19 4061 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  CHSC103982  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16675 Butte On the south side of the Guardian Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 301 Comment
  CHSC8253  Poa secunda subsp. secunda M. Banning 1969-4-15 54 Butte Junction of Rock Cr. Rd. and Cohasset, along road. 60 Comment
  CHSC26828  Pogogyne zizyphoroides M. S. Taylor 1978-5-7 1613 Butte Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico Comment
  JEPS115673  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 369 Comment
  UC203665  Polygala cornuta var. cornuta A. A. Heller 1914-7-24 11624 Butte gravelly slopes near Forest Ranch; ; near Forest Ranch, Butte Co. 731 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
  CHSC113210  Polygonum aviculare subsp. depressum Lowell Ahart 2014-4-25 19407 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CAS-BOT-BC414195  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico 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
  CHSC62156  Polygonum bidwelliae B. Castro 1987-5-18 98 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On flat lava outcrop surfaces and edges. 435 Comment
  CHSC28773  Polygonum bolanderi J. D. Jokerst 1979-9-22 355 Butte 50 yds. N. of Humboldt Rd., 2.0 mi. N.E. of intersection with Hwy. 32. 1371 Comment
  CHSC78889  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte About 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  JEPS112783  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Carpenter Ridge, along road to Butte Meadows, 3.2 miles NE from the junction with Highway 32 1356 Comment
  CAS-BOT-BC414371  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  UC466038  Polygonum californicum Mrs. R. M. Austin Apr. 1896 174 Butte plains Comment
  RSA219113  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  CHSC26670  Polygonum douglasii subsp. spergulariiforme M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1460 Butte Scattered on e side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC44254  Polygonum douglasii subsp. spergulariiforme V. Oswald; L. Ahart 1988-7-17 3590 Butte On the w side of Scotts John Creek at the 'camp' located 0.6 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC94023  Polygonum douglasii subsp. spergulariiforme R. D. Fischer 2005-9-5 670 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek on the dry, bare, gravelly soil of an old road bed. 1737 Comment
  SEINET13711408  Polygonum lapathifolium Lowell William Ahart, Lowell William Ahart 1999-1 8174 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CAS-BOT-BC414716  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  CAS-BOT-BC419809  Polygonum parryi Lowell Ahart 1980-7-4 2457 Butte Near Hurleton. 600 Comment
  JEPS110121  Polygonum persicaria Lowell Ahart 2006-8-29 13236 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 19 Comment
  UC726284  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Chaparral; banks of streamlet 1524 Comment
  SEINET10479670  Polygonum phytolaccifolium Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4208 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  SEINET3404075 Image available Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville, Colby Canyon 1550 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC38241  Polypodium calirhiza Vernon Oswald 1982-7-3 21 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC39819  Polypodium calirhiza Ruby Gist 1935-4-26 Butte Fern Banks. Comment
  CAS-BOT-BC76866  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  SEINET10530416  Polypodium glycyrrhiza Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3469 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  SEINET10874638  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 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
  CHSC25492  Polypogon interruptus L. Ahart 1977-5-8 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS103559  Polypogon interruptus Lowell Ahart 2002-4-15 9492 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  UCD91012  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte 13 miles west of Chester, near road to Chico Creek, near Lomo. Comment
  CAS-BOT-BC233209  Polypogon maritimus Lowell Ahart 1982-7-18 3681 Butte Along the sides and on the bottom of a small wash, Peter Ahart Ranch, ca. 1.5 miles N and 1.5 miles E of Honcut 50 Comment
  CAS-BOT-BC232574  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte Along Forbestown Road 228 Comment
  CHSC102730  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC4297  Polypogon monspeliensis R. Jaegel 1966-5-15 7 Butte In upper Bidwell Park at the drainage of the Golf Coarse Lake. Comment
  UC1618880  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte 1.5 mi sse Feather Falls (immediately above Sucker Creek); Sierra Nevada, Plumas Nat'l Forest, Clipper Mills 7.5' Quadr 720 Comment
  SEINET10530107  Polystichum californicum Mary Susan Taylor 1980-4-1 Taylor 2419 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CHSC63692  Polystichum imbricans Lowell Ahart 1994-10-9 7560 Butte On the north side of the poor road that goes from Milsap Bar to Mountain Spring House, about 1 mile west of Mountain Spring House and the paved road, about 8 1/2 (air) miles north and 1 1/2 miles east of Feather Falls. 1158 Comment
  SEINET10530114  Polystichum imbricans Mary Susan Taylor 1981-4-14 Taylor 3530 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CHSC90203  Polystichum imbricans subsp. curtum Lowell Ahart 2005-1-20 11474 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  JEPS122332  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  SEINET259926 Image available Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 Butte 18 mi NE of Oroville. Macabes Cr. Canyon ca. 100 ft. E. of Lumpkin Rd. 396 Comment
  CHSC113580  Polystichum imbricans subsp. imbricans Lowell Ahart 2014-8-24 19722 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  JEPS104593  Polystichum imbricans subsp. imbricans Lowell Ahart 2003-7-30 10459 Butte Along a small stream, on the n side of Little Bald Rock, on the south side of Bean Creek road, ca 2 mi (air) se of Brush Creek. 1000 Comment
  JEPS108138  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 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
  RSA713016  Polystichum imbricans subsp. imbricans L. Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyob Road about 2.5 air mile south of Highway 70 at Big Bend Road. 294 Comment
  UC1609404  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-20 6994 Butte ca. 1 air mi nw of Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC20257  Populus fremontii G. S. Ellmore 1972-4-28 175 Butte Big Chico Creek ca. 1.2 km. E of Five Mile Pool. Comment
  CAS-BOT-BC102691  Populus tremuloides A. A. Heller 1928-7-25 14699 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  CAS-BOT-BC452108  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  UC1562436  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte on e side of Forbestown Reservoir (on e side of the road, at the Forbestown Generator) 487 Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  UCD169275  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  SEINET3837458  Potamogeton heterophyllus Unknown 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC80726  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CHSC48861  Potentilla glandulosa subsp. ashlandica Vernon Oswald 1987-6-9 2967 Butte Near the headwaters of Scotts John Creek, 3.3 mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  CHSC45611  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  CDA26094  Potentilla glandulosa subsp. nevadensis T. C. Fuller 1962-7-12 9167 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  UC398922  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CHSC29397  Poterium sanguisorba R. A. Schlising; R. Banchero 1980-6-17 3738 Butte N of Magalia, along Coutelenc Road, 0.7 mi S of jct with Skyway at Lovelock. In meadow. 902 Comment
  SEINET12331912  Poterium sanguisorba Unknown 1985-1 4958 Butte E branch of Potter Ravine, ca 2.25 mi N of Oroville Dam 350 Comment
  CHSC1067  Proboscidea louisianica 1947-6-1 Butte River road near Chico. Comment
  CHSC66305  Proboscidea louisianica subsp. louisianica Vernon H. Oswald 1996-6-20 7834 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing on the edge of a marshy drainage on the dry bed of seasonal marsh at the NW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC102615  Prunella vulgaris var. lanceolata Lowell Ahart 2009-7-9 16010 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
  CHSC39512  Prunella vulgaris var. lanceolata Lowell Ahart 1983-6-21 4067 Butte Along Bloomer Hill Road. Near a Branch of Canyon Creek, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 5. 40 Comment
  CHSC43831  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2316 Butte SW end of Logue Meadows. 1325 Comment
  CHSC43835  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-19 2226 Butte Along Sly Cr where rd from Challenge-LaPorte Rd rd to SE side of Sly Cr Reservoir crosses; 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CHSC52220  Prunella vulgaris var. lanceolata L. P. Janeway 1987-5-28 2118 Butte At creeklet crossing Four Trees Rd 0.2 mi up from hwy 70. 487 Comment
  CHSC62115  Prunella vulgaris var. lanceolata L. P. Janeway 1993-6-23 4404 Butte Plumas National Forest. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CHSC48865  Prunus avium Vernon Oswald 1987-3-30 2303 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi nw of Butte Creek Bridge. On the edge of a pond. 65 Comment
  CAS-BOT-BC159927  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  CAS-BOT-BC159930  Prunus emarginata A. A. Heller 1915-6-11 11962 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC11998  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek. 1650 Comment
  CHSC92535  Prunus emarginata L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National Forest; on Sawmill Peak, 560 m east-southeast of the Lookout Tower; 2.4 km east of Magalia. Edge of old roadway. 966 Comment
  CHSC2809  Prunus serotina Carl Pejsa 1958-3-15 89 Butte Bidwell Park Forestry Station. Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  HSC66091  Pseudobahia heermannii M. S. Taylor 1980-4-1 2423 Butte Above Honey Run Covered Bridge and S of Butte Creek, ca. 6 mi. E of Chico 183 Comment
  CHSC92512  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC65895  Psilocarphus oregonus Vernon H. Oswald 1996-4-20 7406 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. Along the W end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  SEINET7042710  Psilocarphus oregonus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  JEPS87528  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  CAS-BOT-BC361916  Psilocarphus tenellus Lowell Ahart 1980-4-30 2140 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CHSC39535  Psilocarphus tenellus var. tenellus Lowell Ahart 1983-6-12 4042 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  POM86960  Ptelea angustifolia C. C. Bruce 1897-05 1803 Butte Forest- Ranch. Comment
  SEINET10530103  Pteridium aquilinum var. pubescens Mary Susan Taylor 1981-3-31 Taylor 3451 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET9625344 Image available Pteridium aquilinum var. pubescens H. F. Copeland 1932-8-18 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  SEINET4853257  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  SEINET10449174  Pterospora andromedea Mary Susan Taylor 1975-6-30 Taylor 813 Butte Ca. 500 yds E of Cohasset Hwy, behind Greenwood Store, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  SEINET10454557  Pteryxia terebinthina Mary Susan Taylor 1978-7-18 Taylor 1708 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CAS-BOT-BC462604  Pyrola dentata Duncan Dunning 1921-7-29 9 (USDA no. 42081) Butte Lassen Forest, Chico Meadows 944 Comment
  CHSC4669  Pyrola picta Renee Carter 1966-6-15 441 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 5 yds off road. 1097 Comment
  UC474252  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville Comment
  CAS-BOT-BC105030  Quercus X morehus Lowell Ahart 1976-7-15 s.n. Butte Near edge of North Honcut Creek, 2 miles N and 3 miles E of Honcut 200 Comment
  CHSC99559  Quercus berberidifolia L. P. Janeway 2008-5-26 9367 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  JEPS115052  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  JEPS95870  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte about 7 miles (air) north of Oroville; North Table Mountain; North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  CAS-BOT-BC86636  Quercus douglasii Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC86112  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CHSC34806  Quercus kelloggii M. S. Taylor 1980-5-8 2611 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC34807  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  CHSC27189  Quercus suber P. Moyer 1971-10-2 30 Butte CSUC campus. E parking lot of E.J.H. Bldg. 60 Comment
  UCD47472  Quercus vacciniifolia J. I. Mallory 1970-8-20 379 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  CHSC94972  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC50337  Ranunculus alismifolius var. hartwegii Vernon Oswald; Lowell Ahart 1990-5-29 4268 Butte Butte Creek House Meadow on the east side of Humbug Rd, ca. 3.5 miles (air) east-southeast of Jonesville. 1777 Comment
  CHSC33971  Ranunculus aquatilis var. capillaceus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte In and along West Branch Feather River, 3.4 mi sw of Snag Lake, ca. 11 mi ne of Stirling City. 1615 Comment
  CAS-BOT-BC379115  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  CHSC115288  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte On the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  UC765740  Ranunculus canus R. F. Hoover 1937-5-18 2232 Butte 2 mi s Nelson Comment
  POM99363  Ranunculus canus C. C. Bruce 1898-05 2437 Butte [No location data on label] Comment
  CHSC23895  Ranunculus canus var. canus R. W. Conover 1975-4-18 1 Butte Cole Canyon area of Table Mtn., ca. 6 mi nw of Oroville, along creek 60 yds w of waterfall. 381 Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  JEPS115242  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  CHSC113393  Ranunculus occidentalis var. occidentalis Lowell Ahart 2014-7-2 19544 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  POM219012  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  HSC93187  Ranunculus pusillus L. Ahart 1995-5-26 7573 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC11810  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC38033  Raphanus raphanistrum R. E. Preston 1982-11-13 364 Butte At roadside, n side of Hwy 70 at Wicks Corner, ca. 5 1/2 mi nw of Oroville. 85 Comment
  UCR237330  Raphanus sativus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18744 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  SEINET10493588  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-6-19 Taylor 3963 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  SEINET5569772  Rhamnus rubra H. S. Gentry, S. Koch 1962-1 19761 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  UC478501  Rhamnus rubra E. B. Copeland 1931-7-28 657 Butte w of North Willow Creek; Jonesville 1650 Comment
  CHSC26646  Rhamnus tomentella subsp. tomentella M. S. Taylor 1977-11-10 1514 Butte Small tree, at jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  CHSC92743  Rhamnus tomentella subsp. tomentella L. P. Janeway 2005-6-26 8433 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
  POM85713  Rhamnus tomentella subsp. tomentella C. C. Bruce 1898-01 1889 Butte Valley Comment
  RSA301134  Rhamnus tomentella subsp. tomentella D. C. Michener 1982-7-28 4137 Butte Foothill woodland on volcanic soils on both sides of 32, 8.3 miles NE of jct with 99 near Chico. Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  CHSC606  Rhododendron occidentale T. Morgue 1930-4-27 Butte Concow reservoir. 1066 Comment
  CAS-BOT-BC168128  Rhus aromatica A. A. Heller 1915-3-19 11773 Butte Along Rock Creek 12 miles northeast of Chico Comment
  CHSC51992  Rhus aromatica L. P. Janeway 1988-4-10 2617 Butte Butte Cyn; grassy slope below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. 115 Comment
  UC203616  Rhus trilobata A. A. Heller 1914-3-19 11212 Butte canyon of Big Chico Creek 76 Comment
  JEPS100254  Rhynchospora capitellata Glenn L. Clifton Jul 1992 27157 Butte Flea Valley 1118 Comment
  SFV10395  Ribes amarum M. L. Vincent 1965-4-14 613 Butte Sierra Nevada Skyway, 1.5 miles north of Magalia. 760 Comment
  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC32683  Ribes nevadense M. S. Taylor 1981-3-24 3446 Butte S side of Hwy 70 in immediate vicinity of Poe Dam ca. 1 mi n of Pulga. 487 Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  CHSC44353  Ribes roezlii Lowell Ahart 1988-3-28 5953 Butte On a steep basalt mountain side, about 1/10 miles south of Lumpkin Ridge road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
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Jan 9 2013
  SBBG126087  Ribes roezlii L. Ahart 2012-2-22 17753 Butte S side of Ten Mi House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 387 Comment
  UC857964  Ribes roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows Sierra Nevada 1219 Comment
  UCD102477  Ribes roezlii M. Vincent 1964-4-10 559 Butte Hwy. 32. 10 miles NE of Chico. Comment
  SEINET13942773 Image available Ribes roezlii A. A. Heller 2015-1 11031 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  JEPS117533  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 376 Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CHSC108764  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  HSC100726  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Peter Ahart Ranch, ~0.5 mi. N and 1 mi. E of Honcut, 12 mi. S of Oroville. 34 Comment
  CAS-BOT-BC74462  Rorippa curvisiliqua Lowell Ahart 1985-5-31 5040 Butte Lake Oroville, about 0.5 mile SW of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, NE end of Oroville 274 Comment
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 Comment
  CHSC75991  Rorippa palustris var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8156 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC146436  Rosa bridgesii A. A. Heller 1913-6-7 10809 Butte Near Stirling 1074 Comment
  JEPS104092  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Rd, ca 3 mi south of the Brush Creek Work Center, ca 15 mi (air) ne of Oroville. 1015 Comment
  JEPS103498  Rosa eglanteria Lowell Ahart 2002-5-15 9660 Butte 100 yds SW of Parking Lot 10, 100 yds NE of the buildings, S side of dirt road, Gray Lodge State Wildlife Management Area, 4 mi SW of Gridley 22 Comment
  CHSC109630  Rosa multiflora Lowell Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. 79 Comment
  CHSC87540  Rosa pisocarpa subsp. ahartii R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the end of 10 Mile House Road, near gated property boundary. In meadow, close to a drainage. East side of road, east side of Big Chico Creek. 228 Comment
  JEPS114899  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte bottom of an old gold mined area, about 350 yds SW of the cemetary, about 50 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 305 Comment
  CHSC6629  Rosa spithamea M. MacArthur 1968-6-17 301 Butte NW yard of Building U on the Chico State College campus. 60 Comment
  CHSC3435  Rosmarinus officinalis Judy Potter 1966-2-16 Butte South wall Physical Science Building. Chico State College. Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC78981  Rotala indica Vernon H. Oswald 2000-10-4 9975 Butte Thermalito Afterbay at the boat launching facility off of Larkin Rd. 30 Comment
  SD130474  Rotala indica Lowell Ahart 1980-9-28 2659 Butte Peter Ahart Ranch, Honcut. 49 Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CHSC42719  Rubus armeniacus Lowell Ahart 1987-6-9 5736 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC45821  Rubus armeniacus L. P. Janeway 1987-6-20 2256 Butte S Fk Feather R at crossing of rd from Lumpkin Ridge to Moorville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. Along rd on S side of river. 975 Comment
  CHSC52473  Rubus armeniacus L. P. Janeway 1987-6-5 2133 Butte Along French Cr Rd 1.4 mi NE of OroQuincy Hwy and Stanwood Saddle. Along road at corner of plantation. 929 Comment
  CHSC84739  Rubus glaucifolius L. P. Janeway; Christine Hantelman 2003-6-19 7850 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 280 Comment
  CHSC45812  Rubus laciniatus L. P. Janeway 1987-6-13 2201 Butte Southeast side of Concow Rd at Flea Valley. Along Flea Valley Cr. 1127 Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  POM366455  Rubus laciniatus L. Ahart, P. Ahart 1984-6-10 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC113309  Rubus ursinus Lowell Ahart 2014-4-16 19365 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC35222  Rubus ursinus M. S. Taylor; L. Hanson 1981-5-12 3691 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. Near creek. 853 Comment
  CHSC43632  Rudbeckia occidentalis var. occidentalis Vernon Oswald 1987-7-16 3127 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CAS-BOT-BC421910  Rumex acetosella John Thomas Howell 1962-6-15 37477 Butte Magalia 731 Comment
  CHSC64050  Rumex crispus S. C. Morey 1983-8-4 710 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC421616  Rumex crispus John Thomas Howell 1973-7-9 49689 Butte West Branch of Feather River on Feather River highway 304 Comment
  CHSC33685  Rumex dentatus L. Ahart 1981-5-16 2804 Butte In low places on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC46268  Rumex dentatus subsp. klotzschianus Vernon Oswald 1989-5-1 3754 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 1.5 s of Biggs-Afton Hwy. Scattered plants on the floor of a fallow rice paddy that is reverting to marsh. 18 Comment
  UCD150347  Rumex persicarioides Harry A. George 1971-7-17 s.n. Butte Gray Lodge Wildlife Management Area, Field 14. Comment
  CHSC100897  Rumex salicifolius var. salicifolius R. A. Schlising; Lawrence Janeway 1988-8-2 4655 Butte Northern Butte County, north of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. 1139 Comment
  CHSC87191  Sagina apetala Lowell Ahart 2004-4-4 10720 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  SEINET10537601  Sagina apetala Mary Susan Taylor 1982-4-28 Taylor 4365 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  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
  CHSC50030  Sagina decumbens subsp. occidentalis Lowell Ahart 1990-4-15 6459 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC98988  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-8 14710 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CAS-BOT-BC445663  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC445725  Sagittaria latifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. Comment
  CHSC45310  Sagittaria sanfordii Vernon Oswald 1988-10-23 3709 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  UCD110731  Salix alba M. Wiesendanger 1928-6-1 1339 Butte Introduction Station, Chico. Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  JEPS119591  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC107965  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  CAS-BOT-BC107835  Salix gooddingii J. T. Howell 1959-9-20 34657 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC37756  Salix gooddingii J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1543 Butte Grey Lodge Waterfoul Management Area. Along the road running north of Rutherford Rd. Comment
  JEPS120008  Salix lasiandra var. lasiandra Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC106982  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville 487 Comment
  JEPS119536  Salix lasiolepis Lowell Ahart 2012-2-22 17750 Butte About 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  RSA795642  Salix lasiolepis L. Ahart 2012-4-20 17887 Butte East side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 204 Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  CAS-BOT-BC129577  Salix lasiolepis var. lasiolepis Ira L. Wiggins 1925-1-31 1377 Butte Bank of Sandy Gulch Creek at junction with Chico Creek, 2 miles below Chico Comment
  CHSC84643  Salix lasiolepis var. lasiolepis Matt Quinn 2001-4-29 50 Butte Found along edge of Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  RSA503334  Salix lasiolepis var. lasiolepis J. T. Howell, Gordon H. True 1967-5-9 42239 Butte NW side of Feather River Canyon near Pulga Bridge. Comment
  UC446428  Salix ligulifolia E. B. Copeland 1931-6-18 Butte highest Willow Creek meadow Jonesville; , Willow Creek 1550 Comment
  SEINET13947656 Image available Salvia sonomensis A. A. Heller 1915-1 11810 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  JEPS119722  Sambucus nigra subsp. caerulea Lowell Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC28972  Sanicula bipinnata J. D. Jokerst; M. S. Taylor 1980-2-24 457 Butte Hillside E of Richardson Springs ca 0.5 mi. 243 Comment
  SEINET10454565  Sanicula bipinnata Mary Susan Taylor 1975-4-26 Taylor 512 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  CHSC67150  Sanicula tuberosa James D. Jokerst; L. Ahart 1985-3-24 2179 Butte Rocky Ridge' ca. 1.33 mi NE of edge of Lake Concow on road to Flea Mtn. Comment
  SD3415  Sanicula tuberosa E. B. Copeland 1929-7-20 Butte Jonesville 1550 Comment
  POM82755  Sanicula tuberosa C. C. Bruce 1897-04 s.n. Butte Cherokee Comment
  CHSC109755  Saponaria officinalis Lowell Ahart 2012-10-20 18497 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CAS-BOT-BC6054  Saxifraga californica Amos Arthur Heller 1914-3-19 11214 Butte Canyon of Big Chico creek 76 Comment
  CHSC106601  Scandix pecten-veneris L. P. Janeway 2011-4-13 10230 Butte Sacramento Valley. Oroville; just west of Centennial Park, along the bicycle path on the north slope of the levee on the south side of Feather River. 49 Comment
  JEPS115833  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC102597  Schedonorus arundinaceus L. P. Janeway; B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  POM313089  Schoenoplectus acutus var. occidentalis H. L. Mason, Verne Grant 1946-8-7 12993 Butte Grey Lodge Game Refuge; Gridley Road north of Butte Sink Comment
  SEINET13711019  Scirpus cernuus Lowell William Ahart, Lowell William Ahart 2000-1 8390 Butte 12 Air Mi. SSE of Oroville (T17N, R4E, sec 11, SE 1/4) 130 Ft. 40 Comment
  SEINET10839824  Scirpus cernuus var. californicus Lowell Ahart 1984-5-12 Ahart 4605 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  SEINET11750452  Scirpus congdonii L. Ahart, Ahart, P. 1984-1 4754 Butte ca 1.5 mi SE of Bald Mt, 0.25 mi E of Oak Pt., ca 5 mi NE of Stirling City 1750 Comment
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  CHSC38914  Scirpus microcarpus Vernon Oswald 1983-5-27 570 Butte Upper Bidwell Park, Chico, at the base of the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC45117  Scirpus microcarpus Vernon Oswald 1987-5-25 2923 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. 68 Comment
  CHSC28682  Scribneria bolanderi M. S. Taylor 1979-5-6 1996 A Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC61550  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET3450761  Scribneria bolanderi Unknown 2003-5-18 10180 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut 40 Comment
  CHSC83985  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, about 1 3/4 miles north of Oroville. 211 Comment
  CHSC39494  Scutellaria californica Lowell Ahart 1983-6-21 4060 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CHSC42833  Scutellaria californica L. P. Janeway 1987-6-5 2146 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at the rd along French Cr. 640 Comment
  CHSC85424  Scutellaria siphocampyloides John Dittes 1992-5-5 469 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CAS-BOT-BC415025  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Along the Chico-Oroville road on the lava plains 6 miles from Chico Comment
  SJSU5138  Sedella pumila C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise, Sierra Nevada foothills 487 Comment
  POM195768  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville Road, about 7 miles from Chico. Type collected by Hartweg in the Sacramento Valley, probably near Chico. Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  UC306790  Selaginella hansenii Mrs. R. M. Austin May 1883 321 Butte e Chico Comment
  HSC72949  Selaginella wallacei M. S. Taylor 1980-9-27 3345 Butte S side of Hwy. 70 at Butte-Plumas Co. line 549 Comment
  HSC66272  Selaginella wallacei M. S. Taylor, J. D. Jokerst, L. Ahart 1980-4-4 2439 Butte Junction of Rocky Honcut Creek and Swedes Flat Rd., 2 mi. E of Oroville-Bangor Hwy., 10 mi. SE of Oroville 366 Comment
  CAS-BOT-BC363283  Senecio aronicoides A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  CHSC89845  Senecio eurycephalus var. eurycephalus L. P. Janeway; B. Castro 2004-6-13 8135 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  CHSC84749  Senecio eurycephalus var. lewisrosei L. P. Janeway; John Hunt 2003-6-20 7855 Butte Northern Sierra Nevada Foothills. Above northwest edge of West Branch Feather River arm of Lake Oroville, 1015 m north of Lime Saddle. Serpentine. 305 Comment
  SBBG27945  Senecio integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CAS-BOT-BC363991  Senecio integerrimus var. major Clarence R. Quick 1954-6-19 54 -03 Butte Big Bar Mt. ridge east of Pulga Comment
  UCD146246  Senecio sylvaticus Daniel S. Park 2010-4-10 15 Butte Table Mt. near creek. 339 Comment
  CAS-BOT-BC364271  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CAS-BOT-BC364726  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1982-8-16 4986 Butte Just n of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia 731 Comment
  CDA43366  Sesbania punicea D. G. Kelch 2012-9-19 12 .354 Butte Oroville, immediately west of sewage treatment plant. Comment
  CHSC95998  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley. Shallow arm of Thermalito Afterbay, 150 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CHSC51294  Setaria pumila Lowell Ahart 1990-10-21 6638 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  JEPS76248  Setaria pumila W. L. Jepson 1939-8-17 19456 Butte Reather R. bottom near Oroville; Reather R. 45 Comment
  JEPS119816  Setaria viridis Lowell Ahart 2012-8-10 18416 Butte On the west northeast side of Bidwell Mansion, on the southwest side of the parking area, Bidwell Mansion, Chico. Comment
  CHSC92545  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET12320791  Sherardia arvensis K. D. Marsh 1974-1 8 Butte Table Mountain, ca 6 mi E of Oroville 373 Comment
  JEPS102345  Sibara virginica Lowell Ahart 2001-4-27 8733 Butte 1 3/4 mi W of Honcut (just NW of bridge across Wyandotte Creek, N of Lower Honcut Road, 125 yds W of the railroad) 26 Comment
  SEINET10448358  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  CHSC13725  Sidalcea calycosa J. G. Moore 1970-5-25 151 Butte Growing on a small stream. Paradise Golf Course, Paradise. Comment
  RSA0062304  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte About 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2.5 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 65 Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC1060  Sidalcea glaucescens V. Holt 1935-8-1 Butte De Sabla. 762 Comment
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA32843  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Clear Creek, Paradise Grade Comment
  UC108886  Sidalcea hartwegii Mrs. R. M. Austin June 1883 Butte near Chico; near Chico Comment
  CHSC1047  Sidalcea hirsuta F. Johnson 1937-5-20 Butte Near old radio transmitter on Madrone St. 57 Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  UCD80450  Sidalcea malviflora CNPS SN Foothill Team 2005-5-5 SNFN 0158 f Butte City of Chico, Upper Bidwell Park, off Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  RSA87488  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 s.n. Butte Oroville-Forbestown Rd, 6 miles W. of Forbestown. Comment
  RSA88031  Sidalcea robusta C. L. Hitchcock 1952-5-28 19535 Butte Along Paradise-Durham Road about 5 miles south of Paradise Comment
  UC727036  Sidalcea robusta A. A. Heller 1941-5-9 16108 Butte steep roadside bank on the Clark Road about a mi above old Clear Creek Post Office; mi above site of old Clear Creek Post Office Comment
  CHSC44927  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
  RSA477839  Silene californica M. Vincent 1962-4-16 198 Butte Pentz Road, small reservoir 1/4 mile off road 5 miles S of Paradise. Comment
  SEINET10932255  Silene californica Mary Susan Taylor 1980-10-6 Taylor 3353 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CHSC28491  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte Along trail to Humboldt Peak at Humboldt Summit. 2133 Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC32372  Silene gallica J. D. Jokerst 1979-5-2 1222 Butte Top of North Table Mt., S of Cherokee Rd at the E edge of the mountain. 396 Comment
  CHSC214  Silene laciniata subsp. californica R. M. Staley 1952-7-14 Butte Butte Creek. Comment
  CHSC24877  Silene laciniata subsp. californica T. L. Reynolds 1976-4-23 57 Butte .6 mi ne of Covered Bridge, 7.5 mi ese of Chico. 152 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CAS-BOT-BC181358  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  CHSC4649  Sinapis arvensis R. Carter 1966-4-2 323 Butte Found ca. 7 mi. E of Oroville e at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC42698  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC47069  Smilax californica R. A. Schlising 1988-4-24 4536 Butte N of Forest Ranch along Hwy 32. 975 Comment
  POM197247  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek. Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  SEINET10931472  Solanum americanum Mary Susan Taylor 1979-9-28 Taylor 2195 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CDA18814  Solanum elaeagnifolium K. Ewing 1999-8-31 PDR 1174282 Butte Corner of Centennial and Manzanita Ave., Chico. 0 Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  POM308449  Solidago californica Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3058 Butte Feather River Hwy. Comment
  CAS-BOT-BC365379  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CAS-BOT-BC365380  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  CHSC44900  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CDA42842  Sonchus oleraceus L. Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC107250  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 -A Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC38390  Sonchus oleraceus 1983-5-1 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  JEPS127078  Sonchus oleraceus Lowell Ahart 2015-11-21 20691 Butte On the north side of home, Peter Ahart Ranch, about 1 1/2 miles north and one mile east of Honcut, about 12 miles south of Oroville. Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10954087  Sorghum halepense Lowell Ahart 1999-10-28 Ahart 8318 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  CHSC34997  Spergularia bocconi R. Schlising; R. Banchero 1981-4-17 4034 Butte NW of Oroville, along Cottonwood Road, 0.4 mi E of junction with Hwy 99. Roadside. Comment
  CHSC66074  Spergularia bocconi Vernon H. Oswald 1996-5-22 7622 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On a bank along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  JEPS115355  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS120961  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, Comment
  RSA0098132  Spergularia rubra L. Ahart 2008-5-8 14712 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  UC1562452  Spergularia rubra Lowell Ahart 1990-4-28 6470 Butte in the borrow <sic> area about 1/4 mi s Feather River (about 0.4 mi w of Pacific Heights Rd., about 4 1/2 mi sw of Oroville) 30 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC39396  Spiraea douglasii L. Ahart 1983-9-17 4440 Butte Ca. 1/4 mi se of Stirling City. 1100 Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC11986  Stachys ajugoides var. rigida E. B. Copeland 1930-7-20 451 Butte Jonesville. 1500 Comment
  CHSC43642  Stachys ajugoides var. rigida B. Castro 1987-7-19 147 Butte Along Coon Ck, near campground 0.95 mi by road into Coon Hollow. 1664 Comment
  CHSC52206  Stachys ajugoides var. rigida L. P. Janeway 1988-7-29 3096 Butte Along W Br Butte Cr at Lomo. 1158 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  SEINET10498819  Stachys palustris subsp. pilosa Lowell Ahart 1983-8-16 Ahart 4288 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
  CHSC39397  Stachys pycnantha L. Ahart 1983-9-17 4428 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC70805  Stachys pycnantha H. Durio 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  UC1594589  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  SEINET10965515  Stellaria longipes Mary Susan Taylor 1981-5-14 Taylor 3729 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 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
  CHSC46082  Stellaria media Lowell Ahart 1989-3-25 6195 Butte Along an old road to Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  UC135756  Stellaria media Mrs. R. M. Austin May 1896 293 Butte Chico plains; Chico Comment
  CHSC42486  Stellaria obtusa Lowell Ahart 1987-5-6 5519 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1564731  Stellaria obtusa V. Oswald and L. Ahart 1989-7-21 3875 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  CAS-BOT-BC405341  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  CAS-BOT-BC398214  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CAS-BOT-BC375586  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  SEINET10508386  Stipa californica Mary Susan Taylor 1979-7-21 Taylor 2164 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC51106  Streptanthus diversifolius Ginger S. Gough 1989-4-8 19 Butte Ca. 91 m e of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  UCD78022  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CAS-BOT-BC87431  Streptanthus polygaloides John Thomas Howell 1962-6-16 37619 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC39956  Streptanthus polygaloides L. Ahart; P. Ahart 1983-6-30 4178 Butte Ca. 1.5 mi ne of Concow Reservoir. NE of Oroville. Along dirt road. 550 Comment
  JEPS106170  Streptanthus polygaloides Lowell Ahart 2004-6-22 11111 Butte On the west 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