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Featuring California vascular plant data from the Consortium of California Herbaria and other sources
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Biodiversity data provided by the participants of the Consortium of California Herbaria (Accessed through CCH1 Data Portal, ucjeps.berkeley.edu/consortium/, 2022 August 12.

Literature Citation:
CCH1 Portal. 2022. Biodiversity data provided by the participants of the Consortium of California Herbaria (https://ucjeps.berkeley.edu/consortium/ Accessed on August 12).

Records are made available under the CCH Data Use Terms.

Please send questions or comments to Jason Alexander (jason_alexander@berkeley.edu).


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    An accepted name was found==>Sonchus oleraceus.
    Synonyms were NOT found.

    You searched for: Sonchus oleraceus

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      F CCH1_AIDherbscientific namecoll. namecoll. num.formatted datecountylocality
    RSA474101RSASonchus oleraceusM. B. Dunkle25121931-7-18 AlamedaStrawberry Canon, Berkeley
    RSA223963RSASonchus oleraceusCherie L. Wetzel1501967-9-30 AlamedaAlong sandbag levee. Niles Canon and vicinity
    RSA474100RSASonchus oleraceusM. B. Dunkle25111931-7-18 AlamedaStrawberry Canon, Berkeley; San Francisco Bay [region].
    RSA474099RSASonchus oleraceusDorothy G. Nichols61940-4-06 AlamedaKRE pond, foot of Ashby Avenue, Berkeley.
    RSA0093419RSASonchus oleraceusBonnie C. Templeton16101931-7-06 AlamedaBerkeley.
    DAV353825DAVSonchus oleraceusMorris Halperins.n.1929-5-01 AlamedaAlameda County: streets of Berkeley.
    DAV353856DAVSonchus oleraceusBob Rodin1161943-4-16 AlamedaAlameda County: UC Berkeley. Strawberry Canon. Southern slope. West of the Botanical Garden.
    CAS-BOT374580CASSonchus oleraceusRattan, Volneys.n.1877-4-1 AlamedaShell Mound, Oakland
    CAS-BOT374581CASSonchus oleraceusCovel, Paul F.6731937-9-16 AlamedaOak. Hills
    CAS-BOT374582CASSonchus oleraceusHowell, John Thomas291291954-3-1 AlamedaAllston Way near Grove St., Berkeley
    CAS-BOT374583CASSonchus oleraceusWetzel, Cherie L.8531969-5-8 AlamedaNiles Canyon and Vicinity. Joyland Park
    CAS-BOT374584CASSonchus oleraceusWetzel, Cherie L.1501967-9-30 AlamedaNiles Canyon and Vicinity
    CAS-BOT374585CASSonchus oleraceusWetzel, Cherie L.3161968-4-23 AlamedaNiles Canyon and Vicinity. Intersection of Niles Canyon Blvd. and Old Niles Canyon Road
    CAS-BOT374586CASSonchus oleraceusWetzel, Cherie L.7771969-4-19 AlamedaNiles Canyon and Vicinity. Slope above Old Niles Canyon Road
    CAS-BOT374587CASSonchus oleraceusWetzel, Cherie L.10191969-8-28 AlamedaNiles Canyon and Vicinity. Alameda Creek at Mission Blvd.
    CAS-BOT374588CASSonchus oleraceusWetzel, Cherie L.6171969-4-1 AlamedaNiles Canyon and Vicinity. Muller's ranch
    CAS-BOT374589CASSonchus oleraceusWetzel, Cherie L.10531969-9-23 AlamedaNiles Canyon and Vicinity. Shillings Park
    CAS-BOT374590CASSonchus oleraceusWetzel, Cherie L.11001969-10-26 AlamedaNiles Canyon and Vicinity. Shilling's Park. Growing at edge of Alameda Creek
    CAS-BOT374591CASSonchus oleraceusWetzel, Cherie L.6251969-4-1 AlamedaNiles Canyon and Vicinity. Muller's ranch
    UC123736UCJEPSSonchus oleraceusH. A. Walker6721907-7-07 AlamedaFruitvale
    UC685458UCJEPSSonchus oleraceusBob Rodin1161943-4-16 Alamedaon southern slope w Botanical Garden (Strawberry Canon, University of California Campus, Berkeley); Berkeley, University of California campus, Strawberry Canon
    UC36529UCJEPSSonchus oleraceusJ. Burtt Davy1893-6-03 AlamedaBerkeley
    UC36527UCJEPSSonchus oleraceusJ. Burtt Davy1893-6-03 AlamedaBerkeley
    UC36528UCJEPSSonchus oleraceusJ. Burtt Davy41893-6-01 AlamedaBerkeley
    CDA0030609CDASonchus oleraceusM. Beyers2922010-3-28 AlamedaBerkeley. Along West Frontage Road (Interstate 80 Frontage Road). east of the Berkeley Marina.
    CDA0034028CDASonchus oleraceusD.G. Kelch11.0872011-4-6 AlamedaNear Don Edward's National Wildlife Area.
    POM181473RSASonchus oleraceusH. F. Copeland8631923--1 ButteNelson.
    DAV353838DAVSonchus oleraceusE. M. Johnston140J1915 ButteButte County: Biggs.
    UCR237324UCRSonchus oleraceusGeorge K. Helmkamp187432012-4-14 ButteRobinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70
    CHSC31658CHSCSonchus oleraceusL. Ahart4741974-6-03 ButteIn garden. Peter Ahart Ranch, Honcut.
    CHSC31659CHSCSonchus oleraceusL. Ahart17821978-7-15 ButteAround the garden, Peter Ahart Ranch, Honcut.
    CHSC37529CHSCSonchus oleraceusM. S. Taylor50501982-10-11 ButteGraylodge Wildlife Refuge, near check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. T1 N R01E S24 N1/2 of NE1/4 USGS Quadrangle: Pennington
    CHSC38390CHSCSonchus oleraceus1975-3-9 ButteUpper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines.
    CHSC38391CHSCSonchus oleraceusVernon Oswald5121983-5-21 ButteUpper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake.
    CHSC424CHSCSonchus oleraceusJ. Turner1930-5-14 ButteChico Creek road.
    CHSC6086CHSCSonchus oleraceusB. Wilson1531968-4-17 ButteNE of Greenhouse, CSC campus.
    CHSC63240CHSCSonchus oleraceusLowell Ahart72801994-3-30 ButteGarden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. T2 N R04E S1 W1/4 of NE1/4
    CHSC66156CHSCSonchus oleraceusVernon H. Oswald7669.11996-5-27 ButteSacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the pasture in the S paddock of Tract 7, Sanctuary II. T20n R01E S1 W1/4 OF SW1/4
    CHSC66157CHSCSonchus oleraceusVernon H. Oswald76701996-5-27 ButteSacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. T2 N R01E S1 W1/4 of SW1/4
    CHSC8152CHSCSonchus oleraceusK. Henegar821969-5-15 ButteCohasset Road, 1/2 m s of Chico Municipal airport; along w side of road.
    CHSC8560CHSCSonchus oleraceusM. MacArthur1651968-6-12 ButteCa. 5 W of Biology Stockroom in Life Science bld., Chico State College campus.
    CHSC102501CHSCSonchus oleraceusLowell Ahart157912009-5-30 ButteBy a small rock 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. T2 N R02E S35 near center, upper half
    CHSC103987CHSCSonchus oleraceusLowell Ahart166712010-5-14 ButteOn the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. T2 N R02E S1 W1/4
    CHSC107250CHSCSonchus oleraceusLowell Ahart17360A2011-6-3 ButteWood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. T2 N R01E S2 W1/4
    CHSC107249CHSCSonchus oleraceusLowell Ahart173602011-6-3 ButteWood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. T2 N R01E S2 W1/4
    CHSC107245CHSCSonchus oleraceusLowell Ahart173682011-6-5 ButteIn pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. T1 N R04E S04 SE1/4
    CHSC111368CHSCSonchus oleraceusLowell Ahart180612012-5-14 ButtePlanted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. T2 N R02E S1 W 1/4
    CHSC114962CHSCSonchus oleraceusLowell Ahart199232015-1-27 ButteAlong the west side of Virginia Street, northwest of the intersection of Hazel Street and Virginia Sreet, Gridley. T1 N R02E S36 SE1/4
    CHSC115178CHSCSonchus oleraceusLowell Ahart202062015-6-6 ButteGravel bar on the south side of the dry stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. T2 N R04E S18 SE1/4
    CHSC116495CHSCSonchus oleraceusLowell Ahart206912015-11-21 ButteOn 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. T1 N R04E S04 SE1/4
    JEPS124111UCJEPSSonchus oleraceusLowell Ahart202062015-6-6 ButteAbout 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville.
    JEPS119796UCJEPSSonchus oleraceusLowell Ahart180612012-5-14 ButtePlanted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico.
    JEPS127078UCJEPSSonchus oleraceusLowell Ahart206912015-11-21 ButteOn 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.
    JEPS117702UCJEPSSonchus oleraceusLowell Ahart166712010-5-14 ButteOn the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico
    JEPS118346UCJEPSSonchus oleraceusLowell Ahart173602011-6-3 ButteWood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico
    JEPS118037UCJEPSSonchus oleraceusLowell Ahart173682011-6-5 ButteIn pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville
    JEPS124183UCJEPSSonchus oleraceusLowell Ahart199232015-1-27 ButteNorthwest of intersection of Hazel Street and Virginia Street, Gridley.
    CHSC122438CHSCSonchus oleraceusLowell Ahart220092019-6-15 ButteBack yard of a home, east side of Larkin Road, about one mile north of the intersection of Larkin Road and East Gridley Road, about 2 miles (air) northeast of Gridley. TRS: T1 N, R3E, Section 33 if surveyed.
    CDA0042842CDASonchus oleraceusL. Ahart173682011-6-5 ButteIn pots or garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville.
    CDA0042873CDASonchus oleraceusL. Ahart180612012-5-14 ButtePlanted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico.
    CHSC123880CHSCSonchus oleraceusLowell Ahart226742021-9-11 ButtePeach orchard, about 200 yards southwest of Robinson Corner, intersection of East Gridley Road and Highway 70, about 12 miles (air) southwest of Oroville. T1 N, R3E, northwest 1/4 Section 32.
    UCR238926UCRSonchus oleraceusGeorge K. Helmkamp185312012-2-9 ColusaRiver Road, 7.1 miles north of Colusa; east side of Sacramento River
    CDA0032941CDASonchus oleraceusDoug Barbe & Phyllis Hiatt1979-5-02 ColusaWilliams; waste ground by Shell station.
    RSA760658RSASonchus oleraceusWilliam J. Ferlatte12221970-4-27 Contra CostaSan Francisco Bay, Red Rock Island.
    POM181428RSASonchus oleraceusI. L. Wiggins46081930-4-18 Contra CostaJersey Island.
    CHSC23344CHSCSonchus oleraceusWillis Ball4681975-3-02 Contra CostaContra Loma Regional Park. In area #5. On the w side of a hill in area #5 ca. 10 yds. e of water on e side of lake.
    CHSC75065CHSCSonchus oleraceusRoger Thom221987-5-26 Contra Costa1100 block of Hillside Ave. Walnut Creek. Roadside.
    CAS-BOT374592CASSonchus oleraceusWiggins, Ira L.46081930-4-18 Contra CostaJersey Island
    CAS-BOT374593CASSonchus oleraceusKnight, Walter; Knight, Irja; Howell, J. T.; McClintock, E.; et al32251978-9-5 Contra CostaBrowns Island. Sandy Knob
    CAS-BOT374594CASSonchus oleraceusFrenkel, R. E.2631963-8-18 Contra CostaOn Giant Road, 0.4 mile north of ATSF RR crossing, Richmond
    CAS-BOT374741CASSonchus oleraceusKnight, Walters.n.1965-3-1 Contra CostaAntioch dunes
    UC606734UCJEPSSonchus oleraceusEdward Lee19551936-4-19 Contra Costane shore Red Rock (San Francisco Bay); , ne shore Red Rock
    JEPS100168UCJEPSSonchus oleraceusG. SmickGAS992003-3-27 Contra CostaMt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site
    UC691439UCJEPSSonchus oleraceusMary L. Bowerman13691932-4-27 Contra Costaw facing bank of ridge w Riggs Canon (Oyster Ridge, Mount Diablo); Mount Diablo, s face Oyster Ridge
    UC1948948UCJEPSSonchus oleraceusWilliam J. Ferlatte, L. Maynard Moe12221970-4-27 Contra CostaSan Francisco Bay: Red Rock Island
    UC691778UCJEPSSonchus oleraceusMary L. Bowerman4161930-8-24 Contra CostaMitchell Canon , Mitchell Canon (Mount Diablo)
    UC2032807UCJEPSSonchus oleraceusDoran, Andrew Scott6772012-3-20 Contra CostaBrooks island loading dock, North side of island.
    UC650555UCJEPSSonchus oleraceusIra L. Wiggins46081930-4-18 Contra CostaJersey Island
    UC2028518UCJEPSSonchus oleraceusBarbara Ertter154281996-11-24 Contra CostaWest side of Mount Diablo, Pine Pond along Stage Road in Pine Canon.
    UC691790UCJEPSSonchus oleraceusMary L. Bowerman28131935-4-12 Contra CostaNorth Road Mount Diablo (Mount Diablo)
    UC407040UCJEPSSonchus oleraceusIra L. Wiggins46081930-4-18 Contra CostaJersey Island
    CAS-BOT650016CASSonchus oleraceusMain, Gerald1261975-4-26 Contra CostaBlack Hawk Ranch: NE of Ranch house
    CDA0015245CDASonchus oleraceusG.F. Hrusa143761998-5-08 Contra CostaDow Chemical property at Pittsburg adjacent to shore of San Joaquin River. Sacramento Delta.
    HSC52617HSCSonchus oleraceusG.L. Clifton55391979-6-19 Del NorteNear Smith River, S Fork, close to the town of Gasquet.
    UCR170420UCRSonchus oleraceusGeorge K. Helmkamp100282005-11-15 El Dorado[E of Sacramento, c. 3 air mi NNW of Placerville]; South Fork of American River on the west side of Calif. Highway 193
    CAS-BOT374557CASSonchus oleraceusHowell, John Thomass.n.1954-5-16 El Dorado2 miles nw. of Placerville
    RSA614889RSASonchus oleraceusScott D. White48731997-4-03 FresnoKings River area: E of Centerville, just S of St. Hwy 180 (Kings Cyn Rd) at gravel quarry.; Wahtoke 7.5'
    UCR97843UCRSonchus oleraceusScott D. White48731997-4-03 FresnoKings River area: east of Centerville, just south of State Hwy 180 (Kings Canon Road) at gravel quarry; Central Valley
    UCR122176UCRSonchus oleraceusGeorge K. Helmkamp76122002-4-23 Fresnoalong CA Hwy 180, 10.8 miles west of CA Hwy 145
    CAS-BOT374558CASSonchus oleraceusPollard, Henry M.s.n.1951-8-2 FresnoBig Creek
    DAV338163DAVSonchus oleraceusKonshau Duman642019-4-20 GlennBird Haven Ranch, Butte City, on top of levee parallel to northward dirt road.
    RSA430519RSASonchus oleraceusLyman Benson17961929-7-12 HumboldtWeott Ranger Station. S Fork Eel River.
    RSA245275RSASonchus oleraceusBrad W. Klipfel2811973-8-17 HumboldtBig Lagoon Co. Park.
    DAV353816DAVSonchus oleraceusLinda M. Barker16441976-7-05 HumboldtHumboldt County: Lanphere-Christensen Dunes. 3 miles west of Arcata.
    DAV353817DAVSonchus oleraceusLinda M. Barker15461976-6-01 HumboldtHumboldt County: Lanphere-Christensen Dunes. 3 miles west of Arcata.
    DAV353861DAVSonchus oleraceusJames P. Smith68621973-5-26 HumboldtHumboldt County: Scotia Bluffs along the Eel River near Rio Dell.
    HSC104456HSCSonchus oleraceusJeff Barrett252014-4-13 HumboldtSamoa Peninsula, Fairhaven, along south side of Bay Street
    HSC12548HSCSonchus oleraceusC. Kline771970-11-15 Humboldt4.2 N of Trinidad, olf Hwy. 101
    HSC26377HSCSonchus oleraceusT.O. Osborne381970-9-16 HumboldtTrinidad Bay, Prisoner Rock
    HSC39802HSCSonchus oleraceusPeter Sorensensn1976-6-11 HumboldtKing Salmon
    HSC39938HSCSonchus oleraceusLinda M. Barker16441976-7-05 Humboldt3 W of Arcata
    HSC40944HSCSonchus oleraceusLinda M. Barker15461976-6-01 HumboldtLanphere-Christensen Dunes, 3 W of Arcata.
    HSC60123HSCSonchus oleraceusM.A. Baker5591978-5-20 HumboldtHoopa Indian Reservation
    HSC6223HSCSonchus oleraceusJ.W. Johnson12161962-4-08 HumboldtArcata, Mad River Co. Park
    HSC6224HSCSonchus oleraceusJ.W. Johnson10431961-8-17 HumboldtArcata, W.M. Lanphere Farm, Samoa Peninsula.
    HSC67888HSCSonchus oleraceusJ.P. Smith68621973-5-26 HumboldtScotia Bluffs along the Eel River near Rio Dell
    HSC89465HSCSonchus oleraceusP.A. Daly691986-3-12 HumboldtTrinidad Head, along trail
    HSC91903HSCSonchus oleraceusE. Mackeysn1986-11-02 HumboldtPatrick's Point State Park; by road to Palmer's Point
    CAS-BOT374595CASSonchus oleraceusSmith, Huron H.39071911-6-20 HumboldtVances C. 20
    CAS-BOT374596CASSonchus oleraceusKirby, F. J.s.n.1958-7-1 HumboldtWest of Bridgeville
    CAS-BOT374597CASSonchus oleraceusTracy, Joseph P.138051935-5-16 HumboldtAt Eureka
    JEPS37532UCJEPSSonchus oleraceusLincoln Constance7971934-6-03 Humboldtfoot of bank along n side Redwood Highway at Dyerville (South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel River
    UC582435UCJEPSSonchus oleraceusJoseph P. Tracy138051935-5-16 HumboldtEureka
    UC1070277UCJEPSSonchus oleraceusH. L. Person194371932-7-16 HumboldtHighway n Trinidad; Rock Point Quad.
    UC164789UCJEPSSonchus oleraceusJ. P. Tracy19261903-8-02 Humboldtimmediate vicinity Eureka
    SD00007995SDSonchus oleraceusJon P. Rebman109392005-2-10 ImperialLittle Picacho Wilderness Area (BLM property), north of Winterhaven, southwest of Colorado River; approximately 18 miles north of S24, on Picacho Road, just south of the Picacho State Recreation Area. (IPB 10/07)
    SD173183SDSonchus oleraceusLarry Hendrickson19212005-4-14 ImperialTrust for Public Lands Option Properties; South of SE tip of Santa Rosa Mtns. Coral Wash, approx. 2.5 air miles SW of hwy. 86 and 2.0 air miles north of hwy. S-22 (Borrego-Salton Seaway).
    SD190614SDSonchus oleraceusLarry Hendrickson31512005-4-16 ImperialPicacho State Recreation Area. South side of the Colorado River, near Group Canon N-side of main access road.
    SD191831SDSonchus oleraceusJon Rebman144682008-4-9 ImperialFreeman Properties (Truckhaven): West of the Salton Sea, NW of Salton City, W of Hwy. 86; Section 9 (SP9), in Grave Wash, Site ENCFRU in arroyo bottom and surrounding embankments
    SD199877SDSonchus oleraceusJon Rebman165002009-3-23 ImperialFreeman Properties (Truckhaven): West of the Salton Sea, W of Salton City, Along Hwy S22, section 29 (SP29), Site LANSET on mesa and surrounding mud and cobble hillsides
    SD199878SDSonchus oleraceusJon Rebman164452009-3-12 ImperialFreeman Properties (Truckhaven): West of the Salton Sea, NW of Salton City, W of Hwy. 86; Section 6 (SL6), Verbena Wash, Site PHAMIN in rocky arroyo and surrounding rocky hillsides & mesas
    SD200347SDSonchus oleraceusJon Rebman16673b2009-3-24 ImperialFreeman Properties (Truckhaven): West of the Salton Sea, NW of Salton City, W of Hwy. 86; Section 8 (SL8), near north fork of Big Wash, Site TRICAL on mesas and surrounding hillsides
    SD211383SDSonchus oleraceusJon Rebman189022010-4-3 ImperialSouthwest of Plaster City on Bureau of Land Management (BLM) property in an area proposed for development of a solar facility: S of Hwy. S8 N of I-8, NE of Ocotillo & W of El Centro; just N of a powerline road
    SD265928SDSonchus oleraceusJon Rebman325842017-3-18 ImperialIndian Pass area between Picacho and Black Mountain: east of the Algodones Dunes; east of Ogilby Rd. (S34) & just north of Indian Pass Road; along a canyon and its adjacent slopes
    UCSB028338UCSBSonchus oleraceusCorfman, Nancy411961-3-04 Imperial2 miles south, 2 miles west, 1/2 mile south of McCabe School
    RSA0346011RSASonchus oleraceusDuncan S. Bell45292013-3-17 ImperialColorado Desert; Western Colorado Desert region: Coyote Mountains; approximately 4.75 air miles north of the town of Ocotillo in Painted Gorge.; Painted Gorge 7.5' Q.
    RSA767461RSASonchus oleraceusJ. Mark Porter133982002-3-2 ImperialImperial Dunes Recreation Area [Algodones Dunes], 0.5 miles west-southwest of Ogilby, west of County road S34.
    DAV353796DAVSonchus oleraceusLarry DeBuhr7931973-3-03 ImperialImperial County: Yuha Basin, Pinto Wash; along Highway 98 about 16 miles west of Calexico.
    UCR165478UCRSonchus oleraceusJohn F. Greens.n.2005-3-10 ImperialSalton Basin, transect along Coachella Canal right-of-way, between siphons 9 and 10, c. 4 miles NW of Niland
    UCR166071UCRSonchus oleraceusJohn F. Greens.n.2005-4-7 ImperialE of Salton Sea, just south of Coachella Canon 7, east of Camp Dunlap
    UCR166869UCRSonchus oleraceusChet McGaughs.n.2005-2-17 ImperialE of Salton Sea, NE of Niland, along Coachella Canons 10-11
    UCR102676UCRSonchus oleraceusB.G. Pitzer34751998-2-02 ImperialAlgodones Dunes, south terminus of Ogilby Road, on south side of Hwy I-8, south end of dunes; Algondones Dunes
    UCR170067UCRSonchus oleraceusScott D. White109622005-4-19 ImperialFish Creek Mountains
    UCR212673UCRSonchus oleraceusA.C. Sanders372882010-2-20 Imperialnear Haughtelin Lake (old Colorado R. oxbow), NE of Winterhaven between Cocopah (Blackwell) Rd. and lake
    UCR269599UCRSonchus oleraceusA.C. Sanders421852016-3-14 ImperialChocolate Mountains, along old Niland-Blythe Rd., in wide main canyon near Lion Head Mountain, c. 2.75 km SW of Beal Well
    UCR269769UCRSonchus oleraceusA.C. Sanders421212016-3-7 ImperialChocolate Mountains Aerial Gunnery Range, c. 3.5 NE (66 ° ) of Salvation Pass well site
    UCR269779UCRSonchus oleraceusA.C. Sanders423392016-3-17 ImperialChuckwalla Bench just inside Chocolate Mountains Aerial Gunnery Range, along old Niland-Blythe Rd. 1.2 km east of Surveyors Pass
    CAS-BOT374598CASSonchus oleraceusMcGregor, E. A.20081917-2-5 ImperialColorado Desert. 2 mi south of El Centro
    CAS-BOT374599CASSonchus oleraceusLarson, K.19751976-1-14 Imperial4 mi. SW of Heber at Central Main Canal
    CAS-BOT374600CASSonchus oleraceusFerris, Roxana S.; Rossbach, Ruth P.9627A1938-5-18 ImperialUpper end of Painted Groge, Carisso Mts.
    IRVC105440IRVCSonchus oleraceusJanet Morgan5041965-4-03 ImperialJ street and West I, Brawley
    IRVC105444IRVCSonchus oleraceusD.W. Goodall1968-4-02 Imperial1 W of Glamis.
    UCR292013UCRSonchus oleraceusA.C. Sanders440702020-3-17 ImperialChocolate Mtns. Aerial Gunnery Range, c. 175-375 W of Beal Well
    UCR292132UCRSonchus oleraceusA.C. Sanders437742020-1-14 Imperialwest side of Chocolate Mountains, slope above and 2.4 NE (38 ° ) of Amos, FARP (forward arming & refueling point) Star
    RSA621071RSASonchus oleraceusMary DeDecker43091977-6-16 InyoPanamint Mountains, west side.: Surprise Canon narrows.
    RSA517698RSASonchus oleraceusAlan Romspert941973-3-10 InyoPanamint Mtns. Death Valley National Park. Chris Wicht Canon, in dry arroyos Creosote Bush Scrub. South rocky slope.
    CAS-BOT374559CASSonchus oleraceusBreedlove, D. E.172931970-3-29 InyoIn Surprise Canyon between Ballarat and Panamint City. Panamint Mountains
    CAS-BOT374560CASSonchus oleraceusHowell, John Thomas336251958-5-29 InyoBishop
    UCSB050852UCSBSonchus oleraceusMark A. Elvin59132007-3-8 IrvineUniversity of California, Irvine, San Joaquin Marsh Ecological Preserve.
    SBBG108436SBBGSonchus oleraceusNoraine Meng4021967-5-22 KernChina Lake, S side of telephone building
    UCSB028351UCSBSonchus oleraceusKelly P. SteeleBel 801983-4-20 KernWestern San Joaquin Valley, along Lokern Road, 3.4 miles west of Buttonwillow; (T29S R23E S20)
    POM292651RSASonchus oleraceusLyman Benson32931932-4-11 KernBakersfield. Kern River Watershed.
    POM292655RSASonchus oleraceusArthur L. Cohen561934-2-26 KernBakersfield. Kern River Watershed.
    RSA606030RSASonchus oleraceusL. C. Wheelers.n.1968-11-03 KernKernville: Kern River.
    RSA0103585RSASonchus oleraceusNick Jensen32852015-3-21 KernAmargo Spring at the northern edge of Comanche Point. Tejon Hills.
    RSA300138RSASonchus oleraceusJ. T. Howell516301976-5-16 KernDelano.
    DAV353822DAVSonchus oleraceusJohn Thomas Howell516301976-5-16 KernKern Co.: Delano.
    UCR48135UCRSonchus oleraceusMichael Theroux5191983-4-10 Kernmouth of Kern Canon, southeast of Hwy 178, steep slopes from dirt roadside to crest
    UCR186712UCRSonchus oleraceusMelissa Lippincotts.n.2007-6-28 Kern1.2 mi. ENE of Grapevine Peak. survey area 2.7D, west of Liveoak Canon
    UCR266454UCRSonchus oleraceusMitch Provance103362009-4-7 KernWhite Wolf Grade, c. 6 miles ENE of Arvin, N side of Bear Mountain Blvd. (Hwy 223)
    CAS-BOT374601CASSonchus oleraceusHowell, John Thomas516301976-5-16 KernDelano
    CAS-BOT374602CASSonchus oleraceusHowell, John Thomas370881962-4-9 KernKernville
    CAS-BOT374603CASSonchus oleraceusMeng, Noraine4021967-5-22 KernNaval Weapons Center, China Lake
    CAS-BOT374604CASSonchus oleraceusMeng, Noraine4021967-5-22 KernNaval Weapons Center, China Lake
    CAS-BOT374605CASSonchus oleraceusTwisselmann, Ernest C.105821965-4-21 KernTehachapi Mountains. Tejon Canyon
    CAS-BOT374606CASSonchus oleraceusTwisselmann, Ernest C.105821965-4-21 KernTehachapi Mountains. Tejon Canyon
    CAS-BOT374607CASSonchus oleraceusTwisselmann, Ernest C.122271966-5-12 KernSierra Nevada, Greenhorn Range. Kern Hot Springs
    CAS-BOT555824CASSonchus oleraceusGriffith, Gerald451937-3-28 KernBakersfield--City Lot: 201 Clyde St., San Joaquin Valley watershed
    CAS-BOT556934CASSonchus oleraceusGriffith, Gerald2381937-5-18 Kern24th Street Mill Ditch, San Joaquin Valley watershed
    UC1969542UCJEPSSonchus oleraceusEric Luning262003-5-11 KernKern Canon, Sequoia National Forest, Lower Richbar Picnic Ground.
    JEPS37524UCJEPSSonchus oleraceusWillis L. Jepson67701916-4-16 KernBakersfield Bakeresfield
    UC1969543UCJEPSSonchus oleraceusEric Luning262003-5-11 KernKern Canon, Sequoia National Forest, Lower Richbar Picnic Ground.
    JEPS18665UCJEPSSonchus oleraceusErnest C. Twisselmann16581954-11-09 KernBuena Vista Lake Bed Western San Joaquin Valley, Temblor Rsnge, Buena Vista Lake (Temblor Range, Western San Joaquin Valley)
    RSA0194410RSASonchus oleraceusKatherine S. Ferguson2212018-6-20 KernGrapevine Canon: above bank of stream 50 yards W of bridge on Ferguson property.
    RSA2342RSASonchus oleraceusJ. W. Blankinships.n.1923-4-18 LakeKelseyville.
    CAS-BOT374561CASSonchus oleraceusBlankinship, J. W.s.n.1923-6-17 LakeKelseyville
    UC1070273UCJEPSSonchus oleraceusA. Simontacchi3411937-7-24 LakeLaurel Beach Lakeport Quad., Laurel Beach
    LA32076LASonchus oleraceusPeter H. Raven141651959-5-09 Los AngelesSanta Monica Mountains; Mulholland Hwy, 1 W of Las Virgenes Rd, Malibu Creek drainage
    LA32074LASonchus oleraceusHenry J. Thompson143461959-6-04 Los AngelesSanta Monica Mountains; Point Dume
    LA35622LASonchus oleraceusRonald A. Cross356221952-5-1 Los AngelesSanta Monica Mountains; Topanga Canon
    LA105051LASonchus oleraceusBarry A. Prigge82171988-7-03 Los AngelesSanta Monica Mountains; Calabasas, ca 0.4 mi E of jtn of Mulholland Hwy and Old Topanga Rd, S of E-end of Calabasas High School track
    LA32075LASonchus oleraceusPeter H. Raven1959-9-18 Los AngelesCampus of University of California at Los Angeles
    LA212314LASonchus oleraceusBill Bozarths.n.1949-7-11 Los AngelesConoga Park
    LA212313LASonchus oleraceusL. Hainess.n.1949-7-22 Los AngelesCanoga Park
    LA213933LASonchus oleraceusJoseph Andorfer Ewan75331932-5-19 Los AngelesPlaya del Rey, near power house
    OBI145827OBISonchus oleraceusRebecca Cicoria621982-5-08 Los AngelesPalos Verdes Peninsula, Sepulveda Cyn, along Si's Trl, Rolling Hills
    OBI145826OBISonchus oleraceusRebecca Cicoria631982-5-08 Los AngelesPalos Verdes Peninsula, Sepulveda Cyn, along Si's Trl, Rolling Hills
    SBBG151084SBBGSonchus oleraceusM. B. Dunkle18541928-4-11 Los AngelesSanta Catalina Island: near isthmus
    SBBG151088SBBGSonchus oleraceusE. R. Blakley63711963-12-07 Los AngelesSan Clemente Island: 200 yds SE of new air strip
    SBBG155827SBBGSonchus oleraceusSteven A. JunakSCl-1221990-11-08 Los AngelesSan Clemente Island: along N side of field station building
    SBBG67931SBBGSonchus oleraceusM. N. Ackley11651928-12-1 Los AngelesEagle Rock
    SBBG151090SBBGSonchus oleraceusM. B. Dunkle72891939-4-06 Los AngelesSan Clemente Island: Mosquito Harbor
    SBBG151092SBBGSonchus oleraceusTim Ross, O. Mistretta, M. Hammitt51511991-5-17 Los AngelesSan Clemente Island: beginning of Larkspur Cyn drainage, 1600 ft SE of Benchmark 924 at E end of the old airfield landing strip
    SBBG151091SBBGSonchus oleraceusSteve Boyd w/ T. Ross, L. Arnseth41531990-4-06 Los AngelesSan Clemente Island: Lemon Tank Cyn (used as dumping area)
    SBBG151087SBBGSonchus oleraceusPeter H. Raven171391962-4-09 Los AngelesSan Clemente Island: near barracks, Wilson Cove
    SBBG151082SBBGSonchus oleraceusR. N. Philbrick w/ R. F. ThorneB67-2371967-5-19 Los AngelesSanta Catalina Island: S side of Little Harbor
    SBBG151083SBBGSonchus oleraceusR. F. Thorne358461966-4-05 Los AngelesSanta Catalina Island: Cottonwood Cyn
    SBBG151085SBBGSonchus oleraceusM. B. Dunkle19391928-5-13 Los AngelesSanta Canone Loop, Coach Rd
    SBBG151089SBBGSonchus oleraceusE. R. Blakley52591962-6-10 Los AngelesSan Clemente Island: near Wall 2
    SBBG151086SBBGSonchus oleraceusM. A. Piehl, P. H. Raven623581962-6-09 Los AngelesSan Clemente Island: China Pt, S of lighthouse
    LOB118456LOBSonchus oleraceusD. Green561970-3-24 Los AngelesCSULB Campus, lower campus area
    SD27747SDSonchus oleraceusCarl B. Wolfs.n.1932-5-09 Los AngelesSanta Canon, near bathhouse.
    SD38305SDSonchus oleraceusEdith A. Purers.n.1932-3-24 Los AngelesEl Segundo sand dunes.
    SD69570SDSonchus oleraceusRobert F. Thornes.n.1966-9-14 Los AngelesSanta Catalina Island. behind dunes and salina at Little Harbor.
    SD69794SDSonchus oleraceusRobert F. Thornes.n.1966-4-07 Los AngelesSanta Catalina Island: moist shade of Prunus ilicifolia lyonii forest at bottom of canyon, Cherry Valley.
    SD80108SDSonchus oleraceusC. W. Tilforths.n.1969-11-22 Los AngelesRancho Santa Ana Botanical Garden. Claremont.
    SD232206SDSonchus oleraceusV. Soza12152001-5-14 Los AngelesTransverse Ranges, San Gabriel Mountains region: Santa Anita 1999 Fire area, above Santa Anita Canon, ca. 0.7 mile west of the Santa Anita Dam. SE-facing slope of ridgetop, recently burned area.
    SDSU00541SDSUSonchus oleraceusBeauchamp, R.M.2711967-3-18 Los AngelesSan Clemente Island.
    UCSB028294UCSBSonchus oleraceusPartsch, M.291977-5-14 Los AngelesAlong Boquet Canon Road 14 mi. south of its junction with Elizabeth Lake Road
    RSA474103RSASonchus oleraceusF. R. FosbergS-30011930-6-26 Los AngelesCulver Garden.
    RSA0060873RSASonchus oleraceusR. G. Swinney132142010-6-8 Los AngelesPlacerita Canon Natural Area, east entrance (Walker Ranch) from Placerita Cyn. Rd. to canyon bottom and 0.2 miles to the west along Placerita Canon Trail.; Mint Canon 7.5′ Q.
    RSA527709RSASonchus oleraceusTimothy S. Ross41561991-3-07 Los AngelesElephant Hill, Western Pomona,.; San Dimas USGS 7.5
    RSA529290RSASonchus oleraceusTimothy S. Ross44631991-4-08 Los AngelesElephant Hill: Western Pomona.; San Dimas USGS 7.5'
    POM19130RSASonchus oleraceusP. A. Munz66801923-4-09 Los AngelesSan Clemente Island. Canon 3 miles southeast of Casa Blanca.
    RSA594990RSASonchus oleraceusMark Hoefs26331996-4-06 Los AngelesSanta Catalina Island. End of Renton Mine Road.
    RSA474108RSASonchus oleraceusF. R. FosbergS-45741931-4-12 Los AngelesNear Jewfish Point, Santa Catalina Island.
    RSA659746RSASonchus oleraceusOrlando Mistretta661992-4-03 Los AngelesSan Clemente Island.
    RSA657284RSASonchus oleraceusGreg Burchett92-141992-5-26 Los AngelesSanta Clara River west from I-5 to trailer park.
    RSA651187RSASonchus oleraceusJim Kishis.n.1948-2-11 Los AngelesFoot of mountains west of Dalton Canon. [ Little or Big Dalton Canon ?, N of Glendora] Weed growing at edge of orchard under shade of tree in sandy moist soil.
    RSA12389RSASonchus oleraceusC. B. Wolf56011934-4-11 Los AngelesBryant Ranch, east of Long Beach, 250 ft. northeast of junction of Hathaway, Los Altos and 8th Streets.
    RSA474110RSASonchus oleraceusM. B. Dunkle24531931-4-22 Los AngelesAvalon Canon, Santa Catalina Island.
    RSA670984RSASonchus oleraceusJoseph M. Keefe309172001-1-19 Los AngelesRoadside along Sholl Canon Road, 3 meters north of beginning of the Eagle Rock Park Path, 200 meters north of Figueroa Street, Eagle Rock.
    RSA482509RSASonchus oleraceusRichard Noyes4941988-4-30 Los AngelesClaremont. Foothills of the San Gabriel Mountains. Dry drainage bed 100 meters east of Thompson Creek Dam.
    RSA0069885RSASonchus oleraceusR. G. Swinney117512010-2-27 Los AngelesSunland, SE end of Hansen Dam Basin, Haines Canon Channel from the I-210 Fwy, north of Wentworth St., to 0.5 mi. to the west at the Big Tujunga Flood Plain; Sunland 7.5' Q.
    RSA474111RSASonchus oleraceusM. B. Dunkle24681931-4-22 Los AngelesAvalon Canon, Santa Catalina Island.
    RSA355914RSASonchus oleraceusR. F. Thorne473861975-9-04 Los AngelesSanta Catalina Island: Fisherman's Cove; campus of USC Marine Science Center.
    RSA0036768RSASonchus oleraceusTOAD0013-811981-3-03 Los Angeles1 W. Grondahl, Covina. On NW corner of property.
    RSA637502RSASonchus oleraceusValerie L. Soza4511999-5-10 Los AngelesSan Gabriel Mountains: Foothills above Glendora, west of Colby Trail, at end of Loraine Avenue.
    SFV103148SFVSonchus oleraceusC. Fergusons. n.1974-5-13 Los AngelesSan Gabriel Mountains; Placerita Canon Natural Area. Botany trail.
    SFV103146SFVSonchus oleraceusK. Tajbakhsh251996-4-13 Los AngelesCalifornia Channel Islands; Catalina Island. Fisherman's Bay. Outside of USC Marine Research Station gates.
    SFV103147SFVSonchus oleraceusK. A. Wilson8751961-2-21 Los AngelesSan Fernando Valley; Los Angeles, Northridge. San Fernando Valley State College campus. Weedy field and edges of orange grove.
    SFV103149SFVSonchus oleraceusP. M. Kennamers. n.1959-5-30 Los AngelesSan Fernando Valley; Northridge. 17 Nordhoff St.
    SFV103150SFVSonchus oleraceusM. M. Wisotskys. n.1958-5-25 Los AngelesSan Fernando Valley; Los Angeles, Pacoima. To the rear of 12904 Osborne Avenue, directly behind house.
    SFV103151SFVSonchus oleraceusD. K. Shayne1041966-3-09 Los AngelesSanta Susana Mountains; Above Zelzah Ave.
    SFV103152SFVSonchus oleraceusJ. N. Hogues. n.2015-3-16 Los AngelesSan Fernando Valley; Los Angeles, Northridge, CSUN campus.
    RSA160432RSASonchus oleraceusJ. D. Olmsted3081959-3-23 Los AngelesBlanchard park on Pomona college campus by area catching runoff from sprinkling system-common weed.
    RSA0021285RSASonchus oleraceusDuncan S. Bell50802013-6-13 Los AngelesAngeles National ForestSan Gabriel Mountains region: Sheep Mountain Wilderness; Coldwater Canon off of Canon, on the southwestern flanks of Mount San Antonio.; Mount Baldy
    POM11349RSASonchus oleraceusF. L. Robinson101921-3-17 Los AngelesClaremont, near the Greek [Theater]
    RSA258370RSASonchus oleraceusC. W. Tilforth4661972-4-12 Los Angeles[Rancho Santa Ana Botanic Garden, Claremont.]
    RSA534008RSASonchus oleraceusTimothy S. Ross51101991-5-17 Los AngelesSan Clemente Island. 700 ft. ENE of North Tank and 2300 ft. due W of Jack (not Jack Point).
    RSA0021431RSASonchus oleraceusAnonymouss.n.1951-3-20 Los AngelesPoint Dume
    RSA599685RSASonchus oleraceusSteve Boyd97041997-5-06 Los AngelesLiebre Mountains region: San Francisquito Canon, west side of canyon at eastern end of Red Mountain ridge system, just north of confluence with Bee Canon and 1.5 miles by road south of the Clearwater Canon Truck Trail 6N24.; Green Valley
    RSA127810RSASonchus oleraceusP. H. Ravens.n.1959-9-18 Los AngelesWeed about plantings, campus of the University of California, West Los Angeles.
    POM361387RSASonchus oleraceusN. C. Cooper20181942-10-01 Los AngelesHancock Bld. campus. Univ. So. Calif. Growing in bed of Pfitzer Juniper.
    POM178031RSASonchus oleraceusJoseph A. Ewan41921931-5-11 Los Angeles1 mile noth Van Nuys Estate, West 6th St.
    RSA608872RSASonchus oleraceusL. C. Wheelers.n.1968-9-21 Los AngelesSan Gabriel Mountains: Aliso Canon, Blum Ranch.
    RSA0077094RSASonchus oleraceusR. G. Swinney122252010-4-15 Los AngelesLime Kiln Canon, 0.25-0.7 miles east of Pacoima Wash.; San Fernanado 7.5' Q.
    POM122397RSASonchus oleraceusMarcus E. Joness.n.1926-9-09 Los AngelesCatalina Island.
    RSA601024RSASonchus oleraceusL. C. Wheeler95041967-5-13 Los AngelesSan Gabriel Mountains; mesa between Little Dalton and Englewild canyons.
    RSA0119941RSASonchus oleraceusR. G. Swinney166682014-5-27 Los AngelesSan Gabriel Mountains; Glendora, ridge between east and north forks of Hook Cyn., c. 400 m. south of Glendora Ridge Mtwy. on s.-facing slope at 15-40 % grade.; GlendoraC. 200 m. due n. of Church of the Open Door and n. and e. of Hook Cyn. debris basin.
    RSA0045288RSASonchus oleraceusRegina Allens.n.1983-5-24 Los AngelesEvey Canon in San Gabriel Mts. 1 mi. north of San Antonio Dam off Mt. Baldy Rd. [County incorrectly listed as San Bernardino]
    RSA534020RSASonchus oleraceusTimothy S. Ross53081991-5-19 Los AngelesSan Clemente Island: Westerly fork of Near-Death Canon, draining to Mosquito Cove (drainage beginning 800 N of Rest [1336'] marker; 1800 ft SE of Malo Knoll [1396']). Beginning of drainage.
    RSA0081323RSASonchus oleraceusR. G. Swinney119332010-3-16 Los AngelesConfluence of Little Tujunga Wash and Big Tujunga Wash at I-210 crossing, within 50 m on north and south sides of I-210.; Sunland 7.5' Q.
    RSA0036266RSASonchus oleraceusM. B. Dunkle20131928-10-07 Los AngelesDescanso Canon.
    RSA675939RSASonchus oleraceusLeRoy Gross8022003-3-9 Los AngelesSouthwest side. A west-east trending ridge southwest of Flint Peak. Entered at west end, at Mount Carmel Drive, east of the (2) Glendale freeway, between Chevy Chase Drive (Sycamore Canon) to the north,; Pasadena 7.5 Quad.and Glenoak Blvd. (Scholl Canon) to the south.
    RSA608063RSASonchus oleraceusL. C. Wheelers.n.1931-3-07 Los AngelesLa Verne.
    RSA3479RSASonchus oleraceusC. B. Wolf34221932-5-09 Los AngelesSanta Canon.
    RSA550398RSASonchus oleraceusTimothy S. Ross36101990-6-20 Los AngelesSan Gabriel Mountains: Mouth of Burro Canon near confluence of E and W forks of San Gabriel River. (elevation ranging from stream bottom to slopes).
    RSA647870RSASonchus oleraceusLeRoy Gross2362000-6-8 Los AngelesVerdugo Mountains: Off La Tuna Canon Road, on Santa Monica Mountains Conservancy Land.
    RSA0069876RSASonchus oleraceusR. G. Swinney120912010-3-24 Los AngelesLopez Canon above Pacoima, 1.7 miles west of Kagel Cyn. Road on west side of Lopez Canon Rd.; San Fernando 7.5' Q.
    RSA600754RSASonchus oleraceusL. C. Wheeler98481967-6-16 Los AngelesSan Gabriel Mountains : Sunset Ridge by Millard Canon; N of Coulter Reservoir.
    RSA733680RSASonchus oleraceusR. G. Swinney66711998-8-06 Los AngelesFalls Gulch, waterfall 100m above confluence with upper East Fork San Gabriel River.; Mt. San Antonio 7.5'
    RSA629052RSASonchus oleraceusValerie L. Soza6021999-6-30 Los AngelesSan Gabriel Mountains: Upper Winter Creek Trail.; Mt. Wilson
    RSA95048RSASonchus oleraceusF. W. Peirsons.n.1920-4-22 Los AngelesAt 1 New York Drive, Altadena.
    RSA591062RSASonchus oleraceusJ. Mark Porter109271996-6-05 Los AngelesCa. 2 N Solemint, just off Arline Rd., 2.0 mi from intersection with Sierra Hwy. Around a vernal pool on shelf above Plum Canon and Arline Rd. Pool not evident from road.
    RSA651185RSASonchus oleraceusRichard L. Herrins.n.1948-5-13 Los AngelesBurbank. Corner of Olive Ave. & Kenneth Road
    POM12323RSASonchus oleraceusF. L. Robinson581921-5-09 Los AngelesClaremont.
    RSA474107RSASonchus oleraceusM. B. Dunkle20131928-10-07 Los AngelesSanta Catalina Island. Descanso Canon.
    RSA592295RSASonchus oleraceusL. C. Wheeler95441967-5-13 Los AngelesSan Gabriel Mountains. San Gabriel Canon, Ward's Grove.
    RSA232791RSASonchus oleraceusR. F. Thorne361171966-4-17 Los AngelesSan Clemente Island: near bottom of Box Canon NW of Horse Canon, SW of Thirst.
    POM6199RSASonchus oleraceusArthur M. Cleghorns.n.1902-6-20 Los AngelesClaremont.
    RSA4781RSASonchus oleraceusJames Snows.n.1932--1 Los AngelesBryant Ranch, near Long Beach, Station no.3. Plat. 3.
    RSA12404RSASonchus oleraceusC. B. Wolf56171934-4-11 Los AngelesBryant Ranch, E of Long Beach, 180 ft. east of center of sec. and 150 ft. south of line of SE1/4; T4S R1 W S27 SE/4
    RSA0036836RSASonchus oleraceusB. Daniel Stickney361981-5-23 Los AngelesIn San Jose Hills N of Campus of Cal Poly, Pomona.; San Dimas Quad
    RSA630376RSASonchus oleraceusL. C. Wheeler95971967-5-15 Los AngelesSan Gabriel Mountains: Elsmere Canon; bottom of canyon near mouth.
    POM155653RSASonchus oleraceusM. B. Dunkle19391928-5-13 Los AngelesSanta Catalina Island. Coach road. Talus slope near Wishbone Loop
    RSA188045RSASonchus oleraceusR. F. Thorne357901966-4-04 Los AngelesSanta Catalina Island: Bird Rock, N of Isthmus Cove.
    RSA4783RSASonchus oleraceusJames Snows.n.1932--1 Los AngelesBryant Ranch, near Long Beach. Collected for correlation with a soil survey by the Association Laboratory, Anaheim, Calif.
    RSA188044RSASonchus oleraceusR. F. Thorne358461966-4-05 Los AngelesSanta Catalina Island, Cottonwood Canon.
    RSA474083RSASonchus oleraceusF. R. FosbergS-31521930-7-07 Los AngelesAlamitos Bay
    RSA187956RSASonchus oleraceusR. F. Thorne36229-a1966-4-28 Los AngelesSanta Catalina Island: W-facing rocky bank near upper end Renton Mine road in Pebbly Beach Canon.
    RSA0085549RSASonchus oleraceusR. G. Swinney123262010-4-21 Los AngelesPacoima, 0.4-0.6 miles north of Gavina Ave. in Pacoima Wash.; San Fernando 7.5' Q.
    POM6212RSASonchus oleraceusCrawfords.n.1916-3-29 Los AngelesSanta Monica Mountains
    RSA651183RSASonchus oleraceusF. Zuazos.n.1953-2-09 Los AngelesCal Poly, Voorhis Unit, San Dimas, behind the Administration building, near the Post Office.
    RSA167784RSASonchus oleraceusR. F. Thorne334561964-2-07 Los AngelesWeed at lower end of Pebbly Beach Canon at base of building, E end of Santa Catalina Island.
    RSA474082RSASonchus oleraceusF. R. FosbergS-30021930-6-26 Los AngelesCulver Garden.
    RSA474102RSASonchus oleraceusRobin S. Collins2651973-5-15 Los AngelesAngeles National Forest; Trail Canon, into cyn. ca. 1/2 - 1 mi from beginning of pack trail.
    RSA596367RSASonchus oleraceusR. G. Swinneys.n1989-8-24 Los AngelesBig Dalton Canon, Glendora Wilderness Park, 1.5 NE of Glendora Mtn Rd.
    RSA661092RSASonchus oleraceusOrlando Mistretta2041992-4-05 Los AngelesGuds, San Clemente Island.
    RSA639187RSASonchus oleraceusL. C. Wheeler99331967-7-06 Los AngelesSan Gabriel Mountains: San Dimas Canon.
    RSA474112RSASonchus oleraceusM. B. Dunkles.n.1939-4-06 Los AngelesMosquito Harbor, San Clemente Island.
    RSA4782RSASonchus oleraceusJames Snows.n.1932--1 Los AngelesBryant Ranch, near Long Beach. Collected for correlation with a soil survey by the Association Laboratory, Anaheim, Calif.
    RSA526159RSASonchus oleraceusSteve Boyd41531990-4-06 Los AngelesSan Clemente Island: Lemon Tank Cyn, E side of Island.
    RSA474109RSASonchus oleraceusF. R. FosbergS-44371931-4-01 Los AngelesHamilton canyon, near Avalon, Santa Catalina Island,
    RSA474104RSASonchus oleraceusM. B. Dunkle32961933-4-14 Los AngelesLong Beach.
    RSA651291RSASonchus oleraceusDan Milojevich321981-5-03 Los Angeles1/4 mile W. of Rosemead Blvd. at Whittier Narrows Recreation Park.
    RSA226158RSASonchus oleraceusGary D. Cromwell6531971-5-14 Los AngelesMystic Canon, Angeles National Forest, San Gabriel Mts. 2 NE of Glendora.
    RSA533523RSASonchus oleraceusTimothy S. Ross41721991-3-09 Los AngelesWhittier Hills (Puente Hills, pro parte): seepage ca 300 ft SW of Colima Rd x Camino del Sur.
    RSA533901RSASonchus oleraceusTimothy S. Ross51511991-5-17 Los AngelesSan Clemente Island, at the beginning of Larkspur Canon drainage. 1600 ft. SE of the 924'BM at the E end of old airfield landing strip.
    RSA658354RSASonchus oleraceusNaomi Zohman361985-4-28 Los AngelesJunction of CA Hwy 39 and west fork of San Gabriel River. Forest Service Road, along the west fork.
    RSA474105RSASonchus oleraceusB. Gustafson21211981-3-18 Los AngelesBallona Wetlands, Area 3 Common weed throughout all 3 areas.
    RSA234633RSASonchus oleraceusR. F. Thorne394081970-3-06 Los AngelesIndian Rock in Emerald Bay, Santa Catalina Island.
    RSA657026RSASonchus oleraceusJoseph M. Keefe309032001-1-19 Los Angeleson north side of Upperton Avenue (north across street from 1871 Upperton Avenue) at intersection with Upperton Place; pass in ridge between Eagle Rock Valley and York Valley (Highland Park); Los Angeles, California 90042.
    RSA0021711RSASonchus oleraceusDuncan S. Bell52612013-6-24 Los AngelesAngeles National ForestSheep Mountain Wilderness; East Fork of the San Gabriel River, below Airplane Flat, behind the Bridge To Nowhere.; Mount San Antonio
    POM6198RSASonchus oleraceusN. R. Shaws.n.1900-6-11 Los AngelesClaremont.
    RSA679271RSASonchus oleraceusValerie L. Soza12152001-5-14 Los AngelesAngeles National ForestSanta Anita 1999 Fire area, above Santa Anita Canon, ca. 0.7 mile west of the Santa Anita Dam.; Mount Wilson
    POM155584RSASonchus oleraceusM. B. Dunkle18541928-4-11 Los AngelesSanta Catalina Island. Near Isthmus.
    RSA649383RSASonchus oleraceusA. E. Hershs.n.1950-7-26 Los AngelesCampus UCLA, Botanic garden near NW end.
    RSA0054193RSASonchus oleraceusRichard G. Swinney123412010-4-23 Los AngelesSan Gabriel Moutains; lower Loop Canon, 0.2-0.6 miles upstream from Verterans Park, below US Forest Sercive boundary.; San Fernando 7.5'
    RSA511330RSASonchus oleraceusA. C. Sanders78441988-5-18 Los AngelesEl Segundo Dunes, immediately W of L.A. International Airport & Pershing Drive, & E of Vista Del Mar Blvd.
    RSA0080653RSASonchus oleraceusR. G. Swinney130152010-5-29 Los AngelesMay Canon Truck Trail (FSRd. 3N54) crossing of W. Fork May Canon, north side of rd., c. 1.3 air miles NNW of road's entrance at Veterans Memorial Park in Sylmar.; San Fernando 7.5' Q.
    RSA474106RSASonchus oleraceusF. R. FosbergS-29651930-6-23 Los AngelesDel Rey.
    RSA770873RSASonchus oleraceusR. F. Thorne345071965-5-10 Los AngelesNear upper end of Gallagher Canon, Santa Catalina Island.
    RSA0114808RSASonchus oleraceusRichard G. Swinney158952011-10-25 Los AngelesSan Gabriel Mountains: south end of Coldbrook Campground, along Coldbrook Cr., from 50 meters south to 100 meters north of Hwy 39.; Crystal Lake 7.5 Quad
    RSA127961RSASonchus oleraceusH. J. Thompson143461959-6-04 Los AngelesPoint Dume.
    RSA638813RSASonchus oleraceusValerie L. Soza5891999-6-30 Los AngelesSan Gabriel Mountains: Upper Winter Creek Trail.; Mt. Wilson
    RSA474072RSASonchus oleraceusM. B. Dunkle72891939-4-06 Los AngelesMosquito Harbor, San Clemente Island.
    RSA151208RSASonchus oleraceusP. H. Raven171391962-4-09 Los AngelesNear barracks, Wilson Cove, San Clemente Island
    DAV353806DAVSonchus oleraceusDonald R. Bissing1481973-6-02 Los AngelesLos Angeles County: Evey Canon, San Gabriel Mountains. 1.4 miles from canyon mouth.
    DAV353800DAVSonchus oleraceusGary D. Cromwell6531971-5-14 Los AngelesLos Angeles County: west-facing slope above middle part of canyon. Mystic Canon, Angeles National Forest, San Gabriel Mountains. 2 miles northeast of Glendora.
    DAV353797DAVSonchus oleraceusJack Delaini351974-2-21 Los AngelesLos Angeles County: Lodi Canon, San Dimas Experimental Forest, Angeles National Forest.
    DAV353823DAVSonchus oleraceusJames Henrickson12321963-4-30 Los AngelesLos Angeles County: Evey Canon, northeast of Claremont, along road to Mt. Baldy.
    DAV353852DAVSonchus oleraceusC. W. Tilforth2101969-7-17 Los AngelesLos Angeles County: Rancho Santa Ana Botanical Garden, Claremont.
    DAV353862DAVSonchus oleraceusC. W. Tilforth2381969-7-17 Los AngelesLos Angeles County: Rancho Santa Ana Botanical Garden, Claremont.
    DAV353863DAVSonchus oleraceusRobert F. Thorne366671966-9-14 Los AngelesLos Angeles County: Santa Catalina Island, Little Harbor.
    DAV353850DAVSonchus oleraceusKenneth A. Wilson8751961-2-21 Los AngelesLos Angeles County: Northridge. San Fernando Valley State College campus.
    DAV353857DAVSonchus oleraceusD. S. Park622010-4-29 Los AngelesLos Angeles Co.: Wildwood Canon, roadside near first canyon entrance trailhead.
    DAV353834DAVSonchus oleraceusD. S. Park682010-4-29 Los AngelesLos Angeles Co.: Wildwood Canon, picnic area, shady grassland, with Taraxacum officinale.
    UCR41710UCRSonchus oleraceusG.R. Ballmers.n.1986-3-25 Los AngelesEl Segundo Dunes, back edge of the beach just west of Los Angeles International Airport
    UCR92320UCRSonchus oleraceusScott D. White25351995-2-07 Los AngelesSanta Susana Mtns, Sunshine Canon, directly west of Hwy I-5 just south of interchange with Hwy 14; Santa Susana Mtns
    UCR108410UCRSonchus oleraceusLouis C. Wheelers.n.1968-9-21 Los AngelesAliso Canon, Blum Ranch; San Gabriel Mtns
    UCR189736UCRSonchus oleraceusR.G. Swinney63791998-7-10 Los AngelesPrairie Fork, near Cabin Flats Campground
    UCR189870UCRSonchus oleraceusR.G. Swinney64091998-7-10 Los AngelesPrairie Fork Canon, 0.5 mi. west of Cabin Flats Campground
    UCR194263UCRSonchus oleraceusR.G. Swinney66711998-8-06 Los AngelesFalls Gulch, waterfall 100 m above confluence with upper East Fork San Gabriel River
    UCR204233UCRSonchus oleraceusValerie Soza12152001-5-14 Los AngelesSanta Anita 1999 Fire area, above Santa Anita Canon, c. 0.7 mi west of the Santa Anita Dam
    UCR205218UCRSonchus oleraceusR.G. Swinney85342006-6-18 Los AngelesDevil's Punchbowl County Park, northeast of Punchbowl Road, Sandrock Creek north of the nature center
    UCR210223UCRSonchus oleraceusR.G. Swinney94292008-8-14 Los AngelesSouth Fork Big Rock Creek at South Fork Campground Spring
    UCR210215UCRSonchus oleraceusR.G. Swinney96682008-10-22 Los AngelesAzusa, mouth of San Gabriel Canon, 0.5 mi. upstream from entrance of Old San Gabriel Canon Rd. at El Encanto
    UCR210425UCRSonchus oleraceusR.G. Swinney98532008-11-29 Los Angelesmouth of San Gabriel River Canon, spring 1.5 mi. north of Sierra Madre Ave. on Hwy 39
    UCR213420UCRSonchus oleraceusA.C. Sanders373232010-3-12 Los AngelesMadrona Marsh, Torrance
    UCR219444UCRSonchus oleraceusR.G. Swinney101762009-3-26 Los AngelesAzusa, San Gabriel River at El Encanto Azusa River Wilderness Park
    UCR219557UCRSonchus oleraceusR.G. Swinney102122009-3-28 Los AngelesMonrovia Mountain Park, trail 0-40 m above canyon bottom, from park entrance to 0.4 mi. up canyon
    UCR227644UCRSonchus oleraceusR.F. Thorne345071965-5-10 Los AngelesSanta Catalina Island, upper end of Gallagher Canon
    UCR256872UCRSonchus oleraceusR.G. Swinney132142010-6-8 Los AngelesPlacerita Canon Natural Area, east entrance (Walker Ranch) from Placerita Cyn. Rd. to canyon bottom and 0.2 miles to the west along Placerita Canon Trail
    UCR258568UCRSonchus oleraceusR.G. Swinney130152010-5-29 Los AngelesMay Canon Truck Trail (FSRd. 3N54) crossing of W. Fork May Canon, north side of rd., c. 1.3 air miles NNW of road's entrance at Veterans Memorial Park in Sylmar
    UCR258958UCRSonchus oleraceusR.G. Swinney117512010-2-27 Los AngelesSunland, SE end of Hansen Dam Basin, Haines Canon Channel from the I-210 Fwy, north of Wentworth St., to 0.5 mi. to the west at the Big Tujunga Flood Plain
    UCR258707UCRSonchus oleraceusR.G. Swinney119332010-3-16 Los AngelesConfluence of Little Tujunga Wash and Big Tujunga Wash at I-210 crossing, within 50 m on north and south sides of I-210
    UCR258831UCRSonchus oleraceusR.G. Swinney123412010-4-23 Los Angeleslower Loop Canon, 0.2-0.6 miles upstream from Veterans Park, below US Forest Service boundary
    UCR259135UCRSonchus oleraceusR.G. Swinney125302010-5-4 Los Angelesnorth of Sylmar, 50 to 100 meters south of Stetson Debris Basin, west of Sombrero Canon, 150 to 200 meters north of I-210 Fwy. along Saddletree Ranch Trailhead, Stetson Ranch Park
    UCR259402UCRSonchus oleraceusR.G. Swinney136352010-8-30 Los AngelesEast Fork Big Santa Anita Canon from confluence with Big Santa Anita Canon bottom/Gabrieleno Trail to 0.5 mile upstream
    UCR260007UCRSonchus oleraceusR.G. Swinney120912010-3-24 Los AngelesLopez Canon above Pacoima, 1.7 miles west of Kagel Cyn. Road on west side of Lopez Canon Rd.
    UCR259927UCRSonchus oleraceusR.G. Swinney121502010-4-1 Los AngelesPacoima Wash, c. 1 mile NE of I-210 Fwy, just north of Maclay/Harding St. intersection, below Forest Service boundary, from wash bottom to 150 m to the west and from 50 to 150 meters north of Maclay
    UCR259586UCRSonchus oleraceusR.G. Swinney122252010-4-15 Los AngelesLime Kiln Canon, 0.25-0.7 miles east of Pacoima Wash
    UCR260027UCRSonchus oleraceusR.G. Swinney123262010-4-21 Los AngelesPacoima, 0.4-0.6 miles north of Gavina Ave. in Pacoima Wash
    UCR260393UCRSonchus oleraceusR.G. Swinney132832010-6-21 Los AngelesAngeles National Forest, within 75 meters of Los Pinetos Spring, Los Pinetos Cyn., 0.18 miles N of Santa Clara Truck Trail via trail W of spring
    UCR271058UCRSonchus oleraceusR.G. Swinney150012011-6-6 Los AngelesCharlton Flats (= Pine Flats), 13.8 miles east of jct. of Angeles Crest and Angeles Forest highways
    UCR272637UCRSonchus oleraceusR.G. Swinney145872011-5-6 Los Angelesnorth of Glendora, Glendora Mountain summit along old fire break
    UCR280569UCRSonchus oleraceusR.G. Swinney164902014-5-13 Los AngelesGlendora, west fork of Hook Cyn., c. 0.4 km north of Sierra Madre Av., 100-300 m west of entrance to Church of the Open Door, Colby Fire burn of Jan. 2014
    UCR281363UCRSonchus oleraceusR.G. Swinney165162014-5-15 Los AngelesAzusa Peak, 0.06 mile south of Glendora Ridge Motorway, 1.34 miles due east of Hwy. 39, 0.15 mile east of Garcia Trailhead
    UCR281610UCRSonchus oleraceusR.G. Swinney165752014-5-19 Los AngelesGlendora, on ridge between west fork of Engelwild Cyn. and Glenco Heights Cyn., 0.2 miles WNW of Engelwild Debris Basin, 0.72 air-miles SSE of Glendora Ridge Motorway
    UCR281336UCRSonchus oleraceusR.G. Swinney166282014-5-21 Los AngelesGlendora, along ridgetop and north side of ridge due south of the west fork of Harrow Cyn., north of end of Glendora Ave., along historic (abandoned early '7 Whitcomb Trail
    UCR281427UCRSonchus oleraceusR.G. Swinney166682014-5-27 Los AngelesGlendora, ridge between east and north forks of Hook Cyn., c. 400 m south of Glendora Ridge Mtwy. & 200 m north of Church of the Open Door, NE of Hook Cyn. debris basin
    UCR285578UCRSonchus oleraceusR.G. Swinney124732010-4-30 Los AngelesNear Sylmar, Wilson Canon Park, northern-most of the two east forks of Wilson Cyn., from the mouth of cyn. at Wilson Debris Basin to 0.3 miles up (east) canyon
    CHSC98404CHSCSonchus oleraceusLeRoy Gross2362000-6-8 Los AngelesVerdugo Mountains: Off La Tuna Canon Road, on Santa Monica Mountains Conservancy land. On trail up out of canyon and going to the crest folllowing a ridge running northwest from the crest.
    CHSC109715CHSCSonchus oleraceusV. Soza12152011-5-14 Los AngelesTransverse Ranges, San Gabriel Mountains region: Santa Anita 1999 Fire area, above Santa Anita Canon, ca. 0.7 mile west of the Santa Anita Dam. T0 N R1 W S09 E1/2 SE1/4 USGS Quadrangle: Mount Wilson
    CAS-BOT374608CASSonchus oleraceusTilforth, C. W.2101969-7-17 Los AngelesRancho Santa Ana Bot. Gard., Claremont
    CAS-BOT374609CASSonchus oleraceusTilforth, C. W.2381969-11-22 Los AngelesRancho Santa Ana Bot. Gard., Claremont
    CAS-BOT374610CASSonchus oleraceusParish, S. B.91321914-5-15 Los AngelesSanta Monica
    CAS-BOT374611CASSonchus oleraceusDunkle, M. B.74501940-3-21 Los AngelesEast slope, Santa Barbara Island
    CAS-BOT374612CASSonchus oleraceusWolf, Carl B.34221932-5-9 Los AngelesSanta Catalina Island. Avalon. Near Bathhouse
    CAS-BOT374613CASSonchus oleraceusAbrams, L. R.; Wiggins, I. L.2971931-7-3 Los AngelesChannel Islands. Santa Barbara Island
    CAS-BOT374614CASSonchus oleraceusBlakley, E. R.52591962-6-10 Los AngelesSan Clemente Island
    CAS-BOT374615CASSonchus oleraceusGriesel, Wesley O.s.n.1961-1-28 Los AngelesLa Canada [Canada]
    CAS-BOT374616CASSonchus oleraceusThompson, Henry J.; Raven, Peter H.143461959-6-4 Los AngelesSanta Monica Mountains. Point Dume
    CATA1451CATASonchus oleraceusMark L. Hoefs26331996-4-06 Los AngelesSanta Catalina Island: End of Renton Mine Road
    CATA1193CATASonchus oleraceusMark L. Hoefs21981995-5-30 Los AngelesSanta Canon Road
    CATA855CATASonchus oleraceusMark L. Hoefs16641992-3-30 Los AngelesSanta Catalina Island: Little Harbor
    CATA848CATASonchus oleraceusMark L. Hoefs16561992-3-29 Los AngelesSanta Catalina Island: Above upper circle of Las Lomas Drive, Avalon
    CATA1249CATASonchus oleraceusMark L. Hoefs23291995-1-27 Los AngelesSanta Catalina Island: Ballast Point at Catalina Harbor
    CATA1093CATASonchus oleraceusMark L. Hoefs20431995-5-16 Los AngelesSanta Canon, near road to Two Harbors
    JEPS30414UCJEPSSonchus oleraceusDonald Kyhos59-11959-1-04 Los AngelesWhittier
    UC1595228UCJEPSSonchus oleraceusTim Ross, Peter Fritsch36101990-6-20 Los Angelesmouth Burro Canon (near confluence E and W Forks San Gabriel River); San Gabriel Mountains, near confluence E and W Forks San Gab
    JEPS30659UCJEPSSonchus oleraceusPeter H. Raven, Henry J. Thompson144471959-9-18 Los AngelesUniversity of California, West Los Angeles Santa Monica Mountains, University of California, West Los A
    UC36520UCJEPSSonchus oleraceusJ. H. Barber3011897-7-01 Los AngelesSanta Monica Experimental Station , Southern California
    UC1348970UCJEPSSonchus oleraceusRobert F. Thorne359601966-4-07 Los AngelesSanta Catalina Island
    UC557746UCJEPSSonchus oleraceusNell Murbarger1051936-3-01 Los AngelesSan Clemente Island
    UC284186UCJEPSSonchus oleraceusP. A. Munz66801923-4-09 Los Angeles2 mi s Casa Blanca (San Clemente Island); San Clemente Island
    UC1532940UCJEPSSonchus oleraceusRobert F. Thorne473861975-9-04 Los Angelescampus USC Marine Science Center (Fisherman's Cove, Santa Catalina Island); Santa Catalina Island, Fisherman's Cove, USC Marine Science
    UC75803UCJEPSSonchus oleraceusunknown1903-6-01 Los AngelesLos Angeles
    JEPS30646UCJEPSSonchus oleraceusPeter H. Raven, Henry J. Thompson143461959-6-04 Los AngelesPoint Dume Santa Monica Mountains, Point Dume
    UC557677UCJEPSSonchus oleraceusNell Murbarger1101936-3-01 Los AngelesSan Clemente Island
    UC519723UCJEPSSonchus oleraceusJoseph A. Ewan75331932-5-19 Los Angelesnear power house (Playa del Rey); Playa del Rey
    UC729562UCJEPSSonchus oleraceusCarl B. Wolf34221932-5-09 Los Angelesnear Bathhouse (Avalon, Santa Canon
    UC1929639UCJEPSSonchus oleraceusValerie Soza, LeRoy Gross12152001-5-14 Los AngelesTransverse Ranges; San Gabriel Mountains; Santa Anita 1999 Fire area, above Santa Anita Canon, c. 0.7 mi west of the Santa Anita Dam
    LOB118454LOBSonchus oleraceusP.C. Baker51051965-2-10 Los Angeleswash on Pomona College Canont
    SD00029297SDSonchus oleraceusKorie Merrill11-412011-2-27 Los AngelesSan Clemente Island; Jack Nots planting drainage, west of road
    SD00029296SDSonchus oleraceusHoward L Ferguson1871980-3-24 Los AngelesSan Clemente Island; S. of Nots Pier on grassy ocean bluffs
    SD00029389SDSonchus oleraceusSteven A. JunakSCl-1221990-11-08 Los AngelesSan Clemente Island. Along N side of field station building.
    SD00030281SDSonchus oleraceusJon Rebman352532019-3-18 Los AngelesSan Clemente Island: north-central portion of island; approximately half-way between Wilson's Cove and the old airfield, just south of the road to Nots Pier; hillside to the west of Ridge Road
    JEPS30626UCJEPSSonchus oleraceusPeter H. Raven141651959-5-09 Los AngelesMulholland Hwy 1 mi w Las Virgenes Rd. (Malibu Creek drainage, Santa Monica Mountains); Santa Monica Mountains, Malibu Creek drainage
    UC1215136UCJEPSSonchus oleraceusPeter H. Raven171391962-4-09 Los Angelesnear barracks (Wilson Cove, San Clemente Island); San Clemente Island, Wilson cove
    UCR289664UCRSonchus oleraceusR.G. Swinney169672015-3-28 Los AngelesGlendora, Big Dalton Canon Wilderness Park, Wren Cyn. on Wren-Meacham Trail, 0.2-0.4 mile east of Big Dalton Cyn. Flood Control Channel
    UCR290015UCRSonchus oleraceusR.G. Swinney17961A2015-11-20 Los AngelesDelta Flat, at confluence of Big Tujunga Cyn. and Delta Cyn.
    UCR290713UCRSonchus oleraceusR.G. Swinney174842015-7-16 Los AngelesSan Dimas Experimental Forest, Johnstone Peak summit
    RSA0165605RSASonchus oleraceusEileen BerbeoAEB-OC-042017-3-8 Los AngelesWithin Angeles National Forest. North of Lake View Terrace. Take Little Tujunga Canon Road north from 210 until making a right on Ebey Herreres Truck Trail. Head east until making a right on Oliver Canon to BP and L Road.Oliver Canon, restoration site, roadside.
    RSA0165150RSASonchus oleraceusEileen BerbeoAEB-OC-O2017-5-3 Los AngelesWithin Angeles National Forest. North of Lake View Terrace. Take Little Tujunga Canon Road north from 210 until making a right on Ebey Herreres Truck Trail. Head east until making a right on Oliver Canon to BP and L Road.
    RSA0196600RSASonchus oleraceusR. G. Swinney169672015-3-28 Los AngelesSan Gabriel Mountains: Glendora, Big Dalton Wilderness Park, Wren Cyn. on Wren-Meacham Trail, 0.2-0.4 mile east of Big Dalton Canon. Flood Control Channel.; Glendora 7.5
    SBBG181845SBBGSonchus oleraceusJon Rebman352532019-3-18 Los AngelesSan Clemente Island: N-central portion of island, approximately half-way between Wilson's Cove and the old airfield, just S of the road to Nots Pier, hillside to the W of Ridge Road.
    SD00032690SD