Search Results — 2000 specimen records retrieved (1423 records with coordinates)
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Results for search: Scientific name=Sonchus;   

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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  BFRS237 Image available Sonchus Peter Rubtzoff 1975-6-26 8139 El Dorado Blodgett Forest: Sand Mountain Boulevard ca. 0.65 mi. south of County Road (Comp. 200E). Comment
  CAS-BOT-BC164029  Sonchus Peter Rubtzoff 1955-8-20 2062 Sonoma Bodega Harbor Marsh. Comment
  CAS-BOT-BC164034  Sonchus Peter Rubtzoff 1958-8-9 3844 Sonoma Laguna de Santa Rosa, north of Sebastopol (near Occidental Road). Comment
  CAS-BOT-BC164074  Sonchus Peter Rubtzoff 1960-6-25 4511 Sonoma Laguna de Santa Rosa, east of Graton, between Occidental and Guerneville Roads. Comment
  CAS-BOT-BC365972  Sonchus Peter H. Raven 1954-4-24 6707 Mariposa Merced River about 10 miles below El Portal 487 Comment
  CAS-BOT-BC365975  Sonchus W. R. Dudley 1905-10-15 s.n. Solano Suisun Marshes Comment
  RSA801909  Sonchus Duncan S. Bell, Kim Clark, Megan Ferguson, Calamity Jane Ferguson, Amber Swanson, Jane Tirrell, Adriana VanKlaveren 2013-3-17 4529 Imperial Coyote Mountains; approximately 4.75 air miles north of the town of Ocotillo in Painted Gorge. 206 Comment
  UCSB24002  Sonchus Sandra Hutchinson 1964-3-22 7 San Mateo collected at 908 Patricia Avenue, in San Mateo 908 Patricia avenue, and San Mateo Comment
  CAS-BOT-BC164658  Sonchus Peter Rubtzoff 1960-5-15 4326 Sonoma Fife Creek Marsh. Comment
  CAS-BOT-BC365971  Sonchus F. E. Blaisdell, M. D. No date on label s.n. Calaveras Mokelumne Hill Comment
  CAS-BOT-BC365973  Sonchus John H. Thomas 1970-4-15 15568 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  CAS-BOT-BC365974  Sonchus John Thomas Howell 1959-9-21 34796 Plumas Virgilia 841 Comment
  SEINET10839319  Sonchus Mary Susan Taylor 1981-5-27 Taylor 3802 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
  UCD148378  Sonchus Peter Rubtzoff 1955-9-24 2153 Sonoma Duncans Mills Marsh. Comment
  UCD148422  Sonchus Peter Rubtzoff 1960-5-18 4391 Sonoma Bodega Head Marsh. Comment
  UCSB19014  Sonchus Ralph N. Philbrick and Richard E. Broder 1965-5-16 B65 1051 Santa Barbara collected 3.0 mi SW, in a ridge of Santa Rosa Island Sandy Point 182 Comment
  CAS-BOT-BC365976  Sonchus arvensis H. Mooney; J. St. Andre; R. Wright 1961-6-7 128 Inyo White Mts. Silver Canyon 1828 Comment
  CDA7680  Sonchus arvensis M. K. Bellue, Foster Sep 1945 Santa Clara San Jose. 0 Comment
  UC463087  Sonchus arvensis Michelbacher September 1931 Sacramento Clarkesburg Comment
  CAS-BOT-BC365978  Sonchus arvensis E. Johnson 1932-7-1 s.n. Orange Unspecified Comment
  CAS-BOT-BC365980  Sonchus arvensis J. E. Golden 1966-9-7 s.n. Sacramento M. Brunk prop., end of Brunk Rd., Tyler Island Comment
  CAS-BOT-BC365981  Sonchus arvensis T. C. Fuller 1963-8-27 11162 Siskiyou S. side of Dorris-Tulelake Road where the roadbed forms the north shore of Lower Klamath Lake, Lower Klamath Lake Wildlife Refuge, ca. 12 mi. w. of Hatfield Comment
  CDA7679  Sonchus arvensis J. Golden 1966-9-7 Sacramento Merle Brunk property, end of Brunk Road, Tyler Island. 0 Comment
  SEINET13695055 Image available Sonchus arvensis T. C. Fuller 1963-8-27 11162 Siskiyou Perennial in scattered patches on roadside, S. side of Dorris-Tulelake Road where the roadbed forms the N. shore of Lower Klamath Lake, Lower Klamath Lake Wildlife Refuge, 12 mi. W. of Hatfield Comment
  UCD136122  Sonchus arvensis T. C. Fuller 1963-8-27 11162 Siskiyou south side of Dorris-Tulelake Road where the roadbed forms the north shore of Lower Klamath Lake, Lower Klamath Lake Wildlife Refuge. Around 12 miles west of Hatfield. Comment
  UCD136124  Sonchus arvensis T. C. Fuller 1963-8-27 11162 -b Siskiyou south side of Dorris-Tulelake Road where the roadbed forms the north shore of Lower Klamath Lake, Lower Klamath Lake Wildlife Refuge. Around 12 miles west of Hatfield. Comment
  UCSB49779  Sonchus arvensis Lain, Maria 1978-3-15 Santa Barbara Isla Vista, on Sabado Tarde near UCSB campus 15 Comment
  CDA7678  Sonchus arvensis subsp. arvensis Cummings 1946-11-6 Santa Barbara Raymond Estate, Montecito. 0 Comment
  CDA7681  Sonchus arvensis subsp. arvensis E. Johnson, Goodwin 1939-1 Orange 0 Comment
  CDA20503  Sonchus arvensis subsp. uliginosus M. Champion 2004-8-2 PDR 1269204 Santa Barbara Central Coast; Silva Farms, NW of RR tracks on Floradale Avenue in Lompoc. 0 Comment
  CDA20308  Sonchus arvensis subsp. uliginosus D. Chang 2004-11-1 1269586 Santa Barbara Southern California; At end of Douglas Rd. 0 Comment
  CDA7674  Sonchus arvensis subsp. uliginosus T. C. Fuller 1963-8-27 11162 Siskiyou South side of Dorris-Tulelake Road where the roadbed forms the north shore of Lower Klamath Lake, Lower Klamath Lake Wildlife Refuge, ca. 12 miles west of Hatfield. 0 Comment
  CDA7676  Sonchus arvensis subsp. uliginosus T. C. Fuller 1963-8-27 11162 Siskiyou South side of Dorris-Tulelake Road where the roadbed forms the north shore of Lower Klamath Lake, Lower Klamath Lake Wildlife Refuge, ca. 12 miles west of Hatfield. 0 Comment
  RSA170318  Sonchus arvensis subsp. uliginosus T. C. Fuller 1963-8-27 11162 Siskiyou S side of Dorris Tulelake Road where the roadbed forms the N shore of lower Klamath Lake, lower Klamath Lake Wildlife Refuge, 12 miles W of Hatfield. Comment
Read comments
Jul 7 2011
  BFRS236 Image available Sonchus asper Peter Rubtzoff 1974-6-26 7644 El Dorado Blodgett Forest: upper Gaddis Creek area in Mainline Road Clearcut (Comp. 451E). Comment
  BFRS353 Image available Sonchus asper Peter Rubtzoff 1975-7-8 8154 El Dorado Blodgett Forest: Spring Road ca. 0.15 mi. north of junction with County Road (Comp. 270U). Comment
  CAS-BOT-BC229758  Sonchus asper A. Williams; E. McDermott; D. Smith; et al. 2012-6-23 1406 Marin Marin Municipal Water District Lands: Mount Tamalpais. Off Laurel Dell Rd., south of culvert LD-15, just north of where Cataract Creek crosses road Comment
  CAS-BOT-BC365986  Sonchus asper E. A. McGregor 1921-8-17 s.n. Del Norte Requa and Vicinity. On old abandoned road grade - S.E. of Orick Comment
  CAS-BOT-BC365988  Sonchus asper D. E. Breedlove 1970-3-29 17294 Inyo In Surprise Canyon between Ballarat and Panamint City. Panamint Mountains 1127 Comment
  CAS-BOT-BC365991  Sonchus asper Greg de Nevers 2001-7-8 12571 Lake Clear Lake, Lake County Land Trust, Rodman Slough 475 Comment
  CAS-BOT-BC365992  Sonchus asper J. W. Blankinship 1924-5-10 s.n. Lake Blue Lakes Comment
  CAS-BOT-BC366000  Sonchus asper Gordon H. True 1968-7-10 4367 Placer Hwy. 20 between Yuba Gap and Bear Valley, 1 mile east of Lake Bowman Road 1554 Comment
  CAS-BOT-BC367112  Sonchus asper Peter H. Raven; Michael P. Johnson 1967-5-1 21029 Marin Angel Island. Slopes on south side of island near Rock Quarry and small reservoir 91 Comment
  CAS-BOT-BC374406  Sonchus asper B. G. Pitzer 1999-6-9 3991 San Bernardino Eastern Mojave Desert: Piute Valley, powerline road 1 mile north of telephone cable road, ca. 2 miles SSE of Piute Spring/Ft. Piute 740 Comment
  CAS-BOT-BC374407  Sonchus asper J. Grinnell; H. W. Grinnell 1906-7-28 316 San Bernardino Edge of Cienega, So. slope Sugarloaf, San Bernardino Mts. 1920 Comment
  CAS-BOT-BC374409  Sonchus asper Lowell Ahart 1984-5-21 4615 Sutter At the old homestead on the south side of the South Butte, Sutter Buttes 400 Comment
  CAS-BOT-BC374413  Sonchus asper Nora Pettibone; Frank W. Hubby 1895-5-3 s.n. Ventura Ojai Valley and Vicinity. Near Creek Comment
  CAS-BOT-BC374424  Sonchus asper Henry M. Pollard 1951-8-2 s.n. Fresno Huntington Lake and Vicinity. Big Creek 1524 Comment
  CAS-BOT-BC374456  Sonchus asper E. Painter; M. Andrews 1996-7-6 HL 2879 Monterey Fort Hunter Liggett (Training Area 12), Nacimiento River, ca. 1.8 air km SE of confluence with Slickrock Creek, ca. 2.1 air km due N of San Miguel Creek 390 Comment
  CAS-BOT-BC374457  Sonchus asper Cathy Genetti; Eric Engles 1982-5-1 160 Monterey Landels-Hill Big Creek Reserve, Gamboa Point Section. Santa Lucia Mountains. Collected on Gamboa Point on road at 1000' 304 Comment
  CAS-BOT-BC374458  Sonchus asper Ernest C. Twisselmann 1965-11-2 11740 Monterey Mouth of Mill Creek 3 Comment
  CAS-BOT-BC374459  Sonchus asper Ernest C. Twisselmann 1965-11-2 11740 Monterey Mouth of Mill Creek 3 Comment
  CAS-BOT-BC374462  Sonchus asper Beatrice F. Howitt; Judson Vandevere 1964-6-30 H 63 Monterey In Carmelo Meadows in the grass at Pt. Lobos Reserve Comment
  CAS-BOT-BC374463  Sonchus asper A. A. Heller 1903-5-22 6767 Monterey Pacific Grove Comment
  CAS-BOT-BC374480  Sonchus asper Ernest C. Twisselmann 1954-5-28 1303 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Chris Twisselmann Ranch: Eastern San Luis Obispo County Comment
  CAS-BOT-BC374491  Sonchus asper Fred Hemphill 1973-4-22 786 San Mateo San Carlos. Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC374498  Sonchus asper J. H. Thomas 1949-4-14 286 San Mateo Kings Mountain Comment
  CAS-BOT-BC374505  Sonchus asper Josephine D. Randall 1907-6-14 97 Santa Clara Santa Cruz Peninsula. Stanford University Comment
  CAS-BOT-BC374506  Sonchus asper Josephine D. Randall 1907-6-14 97 Santa Clara Santa Cruz Peninsula. Stanford University Comment
  CAS-BOT-BC374516  Sonchus asper J. H. Thomas 1950-4-29 1703 Santa Cruz Near San Mateo - Santa Cruz Co. line along ocean bluffs Comment
  CAS-BOT-BC374518  Sonchus asper J. H. Thomas 1953-5-2 3043 Santa Cruz Along Robak Drive, about 1/2 mile north of La Selva Beach (Robroy) 15 Comment
  CAS-BOT-BC374523  Sonchus asper W. B. Cooke; V. G. Cooke 1963-7-12 34329 Siskiyou Memorial Highway, Mt. Shasta Comment
  CAS-BOT-BC374533  Sonchus asper Ernest C. Twisselmann 1969-5-8 15288 Tulare San Joaquin Valley. Porterville Highway, 1.5 mile east of Tipton 91 Comment
  CAS-BOT-BC374534  Sonchus asper Ernest C. Twisselmann 1969-5-8 15288 Tulare San Joaquin Valley. Porterville Highway, 1.5 mile east of Tipton 91 Comment
  CAS-BOT-BC374547  Sonchus asper John Thomas Howell; Gordon H. True 1967-8-8 43519 Tulare Along Chimney Creek, Lamont Meadow, Kern Plateau 1676 Comment
  CAS-BOT-BC421476  Sonchus asper J. Klein; P. Suri; G. Anderson; R. Schneider 2014-5-10 14331 Marin Mount Tamalpais. Marin Municipal Water District lands: Swimmer Trail grassland. Comment
  CAS-BOT-BC423336  Sonchus asper A. Williams; C. Darling; M. Garcia; R. Brostrom; L. Juarez; A. Juarez 2014-4-26 14623 Marin Mount Tamalpais. Marin Municipal Water District lands: Across the bridge from Leo T. Cronin Fish Viewing Area, near gate along Lower Peters Dam Road. Comment
  CDA12550  Sonchus asper G. F. Hrusa 1990-5-2 7805 Sacramento Natoma Unit-Folsom Lake State Rec. Area; Vicinity of parking area at Willow Creek access, E side of Lake Natoma. Comment
  CDA15259  Sonchus asper G. F. Hrusa, D. Crowe 1998-5-8 14390 Contra Costa Sacramento Delta; E end of Dow Chemical property in Pittsburg. Comment
  CDA17168  Sonchus asper G. F. Hrusa, M. I Wibawa 2004-3-31 16215 Merced San Luis Wildlife Refuge; W of Hwy 165 across from Great Valley Grasslands St. Pk. 30 Comment
  CDA29133  Sonchus asper D. G. Kelch, Daniel Weinstein 2009-6-21 9 .447 Napa Near Skyline Park. Comment
  CDA29496  Sonchus asper D. G. Kelch, Troy MacGregor 2009-5-1 9 .269 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  CDA35420  Sonchus asper G. F. Hrusa, M. Beyers 2011-6-9 18330 Santa Barbara Sierra Madre Mountains; San Rafael Wilderness. Mine Canyon, approx. 1/2 mile upstream from confluence with Sisquoc River. 583 Comment
  CDA36903  Sonchus asper CDFA Staff 1995-6-12 s.n. Placer Dry Creek. 0 Comment
  CDA36935  Sonchus asper CDFA Staff 1998-4-22 s.n. Yolo Rominger Prop., north of County Road 19, east of County Road 92C, west of County Road 94B. 0 Comment
  CDA37238  Sonchus asper CDFA Staff s.n. Placer Nute Ranch, near Nute Road. 0 Comment
  CDA7703  Sonchus asper A. G. Murdock, D. G. Kelch 2003-9-12 177 Solano Carquinez Strait; Mare Island. Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 Comment
  CHSC33105  Sonchus asper M. S. Taylor 1981-5-15 3736 Butte Se side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi n of Pulga bridge. 457 Comment
  CHSC34696  Sonchus asper M. S. Taylor 1981-5-14 3713 Butte N side of Four Mile Ridge, s of Sly Creek, ca. 1.5 mi ne of Mt House on Oroville-Quincy Hwy. 853 Comment
  CHSC37276  Sonchus asper M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4351 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1.8 mi w of its jct with Pennington Rd at the checking station, ca. 12 mi sw of Gridley. 21 Comment
  CHSC38123  Sonchus asper R. L. Ondricek-Fallscheer 1983-5-8 170 Butte On se side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 188 Comment
  CHSC40586  Sonchus asper Pauleen Broyles 1982-7-2 789 Tehama The Nature Conservancy Vina Plains Preserve. Next to culvert where irrigation ditch crosses under Hwy 99, .5 km s of Lassen Rd. 60 Comment
  CHSC43001  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44899  Sonchus asper Lowell Ahart 1988-7-31 6155 Butte Along the road gutter, north of small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  CHSC55886  Sonchus asper L. P. Janeway 1987-6-29 2401 Trinity Old floodplain of Trinity River near mouth of Grass Valley Cr; 'Lowden Ranch.' Area on N side of Lewiston Rd 1.8 mi from hwy 299. On bank of ditch. 533 Comment
  CHSC6139  Sonchus asper J. Wheeler 1968-5-18 380 Mendocino Russian Gulch State Park ca. 200 yds. e of campsites. Comment
  CHSC8153  Sonchus asper Dave Isle 1969-5-17 479 Butte On meadow to N. of Upper Bidwell Park road just E. of Bare Hole turn-off. 59 Comment
  CHSC90414  Sonchus asper Niall McCarten; Roxanne Bittman 1986-6-14 5330 Tehama Mendocino National Forest--North Coast Ranges. Thomes Creek Watershed. 0.25 mi. W of jct. Rd. 25N41 and 25N32. Comment
  HREC960 Image available Sonchus asper H. F. Heady 1952-10-16 512 Mendocino Orchard Pasture - Hopland Field Station Comment
  HREC961 Image available Sonchus asper H. F. Heady 1953-4-29 641 Mendocino Horse Pasture - Hopland Field Station Comment
  HSC26465  Sonchus asper T. O. Osborne 1970-7-18 24 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  HSC37995  Sonchus asper Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  HSC38348  Sonchus asper Peter Sorensen 1976-7-14 Humboldt North Spit Comment
  HSC39803  Sonchus asper Peter Sorensen 1976-7-11 Humboldt King Salmon Comment
  HSC56504  Sonchus asper Marvin Butler 1979-7-16 7405 Trinity Near Panther Rock Creek, close to the town of Alderpoint 1045 Comment
  HSC57108  Sonchus asper Overton, Butler 1979-7-25 9846 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC58842  Sonchus asper C. L. Lewis 1975-7-1 13 Mendocino Near Van Damne Beach State Park, close to the town of Little River 17 Comment
  HSC6219  Sonchus asper Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  HSC6220  Sonchus asper Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  HSC91761  Sonchus asper Susan H. Bicknell 1989-4-17 San Luis Obispo Montano de Oro State Park; Manzanita Trail Comment
  HSC91904  Sonchus asper E. Mackey 1987-7-19 Humboldt Patrick's Point State Park Comment
  IRVC22185  Sonchus asper Fred M. Roberts 1985-4-11 1644 Orange Dana Point Headlands; Weyerhaeuser Horticultural Research Station property. Southern Coastal 61 Comment
  IRVC29769  Sonchus asper Mark A. Elvin 2006-10-24 5233 San Bernardino Pipes CanyonPreserve; Pipes Canyon, Pipes Creek, ca. 1.9 km upstream from the ranch house and parking lot. Southern Mojave Desert, Little San Bernardino Mtns 1418 Comment
  JEPS15054  Sonchus asper L. R. A. 1901-3-16 1144 San Mateo Menlo Park Comment
  JEPS37522  Sonchus asper Charlotte N. Smith 1942-4-21 595 Kern about 2 1/4 mi by section line se from Poso Mine; Greenhorn Mts. 792 Comment
  JEPS37523  Sonchus asper W. L. Jepson 1891-4-20 Sutter Sutter plains , Sutter plains (Region of the Marysville Buttes) Comment
  JEPS37526  Sonchus asper Walter Fry 1915-5-25 423 Tulare Shepherd Cove , Shepherd Cove (Sequoia National Park) 396 Comment
  JEPS37527  Sonchus asper W. L. Jepson 1935-4-2 16932 Fresno plain s Mendota Comment
  JEPS37528  Sonchus asper Ruby Van Deventer 1938-6-29 129 Del Norte Smith River , Smith River (Van Deventer Ranch) 38 Comment
  JEPS37529  Sonchus asper Blankinship 1911-5-5 Shasta Redding Comment
  JEPS37530  Sonchus asper W. L. Jepson 1928-4-8 12390 Solano Little Oak Ranch , Little Oak Ranch (Vacaville) Comment
  JEPS58908  Sonchus asper Javier Penalosa 1962-12-23 2631 Marin Paradise Dr. at Playa Verde ((a street 1.4 mi nw of road to Naval Net Depot)); Tiburon Peninsula Comment
  JEPS75557  Sonchus asper P. F. Yorks 1975-5-15 399 Contra Costa n Briones Reservoir (ca 1.8 km s of Bear Creek Road on Hampton Road); Hampton Road Natural Reserve 190 Comment
  JEPS80224  Sonchus asper L. R. Heckard and J. Hickman 1980-7-3 5381 Colusa slopes about Summit Springs (sw slope Snow Mt.); sw slope Snow Mt. 1554 Comment
  JEPS88586  Sonchus asper Vernon H. Oswald and Lowell Ahart 1996-5-27 7642 Tehama CDFG parcel on s side of Gyle Road sw Corning (nw side of Valley, along edge of creek 0.4 mi e of w boundary of reserve); Sacramento Valley, Thomes Creek Ecological Reserve 91 Comment
  JEPS95176  Sonchus asper Vernon H. Oswald and Lowell Ahart 1996-5-27 7642 Tehama CDFG parcel on s side of Gyle Road sw Corning (nw side of Valley, along edge of creek 0.4 mi e of w boundary of reserve); Sacramento Valley, Thomes Creek Ecological Reserve 91 Comment
  JEPS99117  Sonchus asper M. B. Dunkle 1939-7-31 8396 Santa Barbara San Miguel Island, Cuyler Harbor Comment
  OBI29261  Sonchus asper David J. Keil, Melissa Luckow, Richard A. Pimentel, and Rhonda Riggins-Pimentel 1981-4-24 14557 San Luis Obispo Jctn of Shell Crk Rd and Calif hwy 58 S of Shandon Comment
  OBI30661  Sonchus asper David J. Keil 1981-5-19 14739 San Luis Obispo Indian Knob. Upper slopes of Indian Knob Comment
  OBI32006  Sonchus asper David J. Keil, Rhonda Riggins, Dirk Walters, Malcolm McLeod, Melissa Luckow, et al. 1981-4-11 14413 San Luis Obispo N of San Simeon along ridge just S of Arroyo de la Cruz Comment
  OBI38431  Sonchus asper Eric Wise 1981-6-22 646 San Luis Obispo Lopez Water Treatment Reservoir Comment
  OBI38432  Sonchus asper Eric Wise 1981-6-22 634 San Luis Obispo Lopez Water Treatment Reservoir Comment
  OBI40719  Sonchus asper David J. Keil, Dirk Walters 1986-5-2 19350 San Luis Obispo Santa Lucia Mts just N of San Luis Obispo in Reservoir cyn. The cyn was burned in July, 1985 in the Las Pilitas Fire Comment
  OBI51493  Sonchus asper Larry Kelly 1991-6-22 421 Santa Cruz Soquel Demonstration State forest off of Highland Ave Comment
  OBI54603  Sonchus asper Renee Jehlik, Shari Beck 1992-5-2 20 Santa Barbara Vandenberg AFB. North Base. Along San Antonio Crk between El Rancho Rd and Southern Pacific RR trestle Comment
  OBI62414  Sonchus asper David J. Keil, Lynne Dee Oyler 1990-5-10 1122 San Luis Obispo Nipomo Dunes. Horseback trip from Oso Flaco Lake S and W across dunes, E to Quercus agrifolia and W again to coast Comment
  OBI78710  Sonchus asper David J. Keil 2013-8-28 31976 San Luis Obispo Morro Bay State Park. East of South Bay Blvd at northern edge of park along unpaved access road to pumphouse. Area of former campground. 5 Comment
  OBI80463  Sonchus asper David J. Keil 2015-2-14 32591 San Luis Obispo Pismo Preserve. Vicinity of intersection of Thousand Hills Road with Price Canyon Road 25 Comment
  POM12890  Sonchus asper P. A. Munz 1922-6-30 5903 Riverside Santa Rosa Mountains. 1982 Comment
  POM201703  Sonchus asper L. M. Booth 1932-7-19 1270 Orange Bolsas Marsh. Comment
  POM292653  Sonchus asper Lyman Benson 1929-7-13 1760 Lake Kelsey Creek at Kelseyville Comment
  POM38169  Sonchus asper Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  POM53036  Sonchus asper A. A. Heller 1903-5-22 6767 Monterey Pacific Grove. Comment
  RSA0012749  Sonchus asper Fred M. Roberts 2012-5-10 7574 Orange San Joaquin Hills: Buck Gully, south tributary, north slope Pelican Hill, just north of Pelican Hills Drive, 0.7 km N Pelican Hill summit. 154 Comment
  RSA0021007  Sonchus asper Duncan S. Bell, Caitlin Elam, Evan Meyer 2013-6-20 5183 San Bernardino Sheep Mountain Wilderness; near the head of the North Fork of Lytle Creek; eastern drainage of Pine Mountain; collecting in Paiute Canyon from 34.32055, 117.61953 to 34.32256, 117.62552. 2204 Comment
  RSA0021592  Sonchus asper Duncan S. Bell, Joshua Paolini 2013-8-13 5617 San Bernardino Bighorn Mountains; an unnamed canyon within the Bighorn Mountains Wilderness area, about 3.25 air miles northwest of Ruby Mountain. 1372 Comment
  RSA0021712  Sonchus asper Duncan S. Bell, Caitlin Elam 2013-6-24 5262 Los Angeles Sheep Mountain Wilderness; East Fork of the San Gabriel River, below Airplane Flat, behind the Bridge To Nowhere. 870 Comment
  RSA0036623  Sonchus asper LeRoy Gross, Sarah DeGroot, Cheryl Sevilla 2015-4-9 7040 Ventura Loughman/Peto Family Trust Properties; Along the river, just east of Santa Paula. End of S. Hallock Drive, south of Highway 126. 82 Comment
  RSA0053796  Sonchus asper Duncan S. Bell, Glenn Morrison, Katie Roland 2014-6-4 7112 San Bernardino Bighorn Mountains; San Bernardino National Forest; collecting in Arrastre Creek, at the southeast end of Horsethief Flat. 1469 Comment
  RSA0055922  Sonchus asper Duncan S. Bell, Perrine Veguer 2014-5-8 6829 San Bernardino Bighorn Mountains; eastern slope of TipTop Mountain, in Blue Cut Canyon. 1732 Comment
  RSA0062363  Sonchus asper LeRoy Gross, Pam DeVries, Otto Gasser 2015-4-22 7194 Ventura Heritage Valley Parks (Shiells/Sommers) Property; Fish Hatchery Road, south off Highway 126. Just east of Fillmore. 152 Comment
  RSA0063024  Sonchus asper LeRoy Gross, Joy England 2015-3-26 6847 Ventura Villeneuva property; Along the River and lower part of South Mountain, east of river. Started at the end of Mission Rock Road. Between Saticoy and Santa Paula. 56 Comment
  RSA0069279  Sonchus asper R. G. Swinney 2010-6-8 13191 Los Angeles Placerita Canyon Natural Area, east entrance (Walker Ranch) from Placerita Cyn. Rd. to canyon bottom and 0.2 miles to the west along Placerita Canyon Trail. 546 Comment
  RSA0081379  Sonchus asper R. G. Swinney 2010-3-16 11911 Los Angeles Confluence of Little Tujunga Wash and Big Tujunga Wash at I-210 crossing, within 50 m on north and south sides of I-210. 329 Comment
  RSA0110535  Sonchus asper R. G. Swinney 2010-6-1 13135 Los Angeles San Gabriel Mountains; Kentucky Springs, c. 1 mile west of Angeles Forest boundary sign at Angeles Forest Hwy, c. 0.5 mile south of Kentucky Springs Rd. 1122 Comment
  RSA0121182  Sonchus asper Duncan S. Bell, LeRoy Gross 2016-8-10 10127 San Bernardino San Gorgonio Wilderness area; collecting in steep hills between Lost Creek and Fish Creek, approximately 2.25 air miles northwest of the summit of Grinnell Mountain. 2202 Comment
  RSA0121459  Sonchus asper Duncan S. Bell, LeRoy Gross 2016-3-30 9139 Riverside Santa Rosa Mountains; Santa Rosa Wilderness area; in a side canyon off of Martinez Canyon, approximately 6.75 air miles southeast of the summit of Martinez Mountain. 698 Comment
  RSA0124013  Sonchus asper Duncan S. Bell 2016-6-16 9764 San Bernardino Pioneertown Mountains Preserve; collecting in Pipes Canyon approximately 1.5 air miles southwest of the ranger station, or approx. 1.25 air miles northwest of Chaparrosa Peak. 1451 Comment
  RSA0127412  Sonchus asper Fred M. Roberts 2016-3-17 8007 Orange San Joaquin Hills: City of Irvine, Bommer Canyon, east fork, 0.3 km ESE Cattle Camp near East Fork Trail. 152 Comment
  RSA116791  Sonchus asper W. R. Dudley 1896-4-29 s.n. Santa Clara Stanford University. The Santa Cruz Mountain Peninsula. Comment
  RSA166685  Sonchus asper M. A. Piehl 1962-5-23 62299 San Luis Obispo Picnic area just N of Oso Flaco Lake. 6 Comment
  RSA185757  Sonchus asper John H. Thomas 1953-5-30 3246 Santa Cruz Along Pajaro River, near bridge on San Juan Bautista- Watsonville Highway, (number 67). 91 Comment
  RSA188038  Sonchus asper R. F. Thorne 1966-4-29 36273 Los Angeles Santa Catalina Island: above ranch in Middle Ranch Canyon 229 Comment
  RSA190666  Sonchus asper P. A. Munz 1967-4-9 18037 Inyo bed of canyon, Hunter Canyon; Saline Valley 670 Comment
  RSA192181  Sonchus asper E. W. Lathrop 1967-4-17 4493 Riverside 14 mi. west of Murrieta, Tenaja Plateau. w slope Redoda Mesa. Comment
  RSA215967  Sonchus asper J. T. Howell 1957-10-11 32995 San Francisco Near Academy of Sciences, Golden Gate Park. Comment
  RSA226772  Sonchus asper I. L. Wiggins 1968-6-19 20985 Tuolumne Read of Lot 10, Bret Harte Drive, Twain Harte. 1128 Comment
  RSA2341  Sonchus asper J. W. Blankinship 1923-4-29 s.n. Lake Siegler Springs. Comment
  RSA24348  Sonchus asper C. B. Wolf 1941-5-28 10819 San Bernardino Mojave Desert, W slope of Providence Mountains; 6.0 miles (airline) E of Kelso in Cornfield Spring Canyon. 1037 Comment
  RSA292231  Sonchus asper James Henrickson 1978-10-20 17712 Inyo Ca. 18 air miles SE of Olancha, ca. 11.5 air miles E of Dunmovin at Haiwee Spring area. Comment
  RSA332362  Sonchus asper R. F. Thorne 1984-5-6 58440 Santa Barbara Santa Cruz Island. Prisoners'Harbor, Prisoners'Harbor Camp. Comment
  RSA334546  Sonchus asper R. F. Thorne, B. A. Prigge, D. C. Michener 1978-5-26 51637 San Bernardino Granite Mountains: Bull Canyon. 1189 Comment
  RSA356028  Sonchus asper R. F. Thorne 1975-9-4 47385 Los Angeles Santa Catalina Island: Fisherman's Cove; campus of USC Marine Science Center. Comment
  RSA40233  Sonchus asper H. M. Pollard 1944-11-11 s.n. Ventura Ojai Avenue, Ojai Valley. Comment
  RSA474075  Sonchus asper M. B. Dunkle 1928-5-13 1953 Los Angeles Ben Weston Beach, Santa Catalina Island. 15 Comment
  RSA474076  Sonchus asper M. B. Dunkle 1929-4-7 2095 Los Angeles White'sLanding, Santa Catalina Island. Comment
  RSA474077  Sonchus asper F. R. Fosberg 1931-4-13 S- 4620 Los Angeles Santa Catalina Island. Eagles nest. Middle Ranch Canyon. 180 Comment
  RSA474078  Sonchus asper F. R. Fosberg 1931-3-24 S- 4340 Los Angeles Hamilton Canyon, near Avalon. Santa Catalina Island. 35 Comment
  RSA474080  Sonchus asper Christopher Davidson 1975-6-29 2944 Kern San Emigdio Canyon, following old Mil Potrero Road, along San Emigdio Creek, Los Padres National Forest. 1677 Comment
  RSA474087  Sonchus asper Ralph Hoffmann 1931-4-12 s.n. Santa Barbara Santa Cruz Island. Main Ranch Comment
  RSA474088  Sonchus asper Ralph Hoffmann 1931-4-12 s.n. Santa Barbara Santa Cruz Island. Main Ranch Comment
  RSA474089  Sonchus asper M. B. Dunkle 1939-7-31 8396 Santa Barbara Cuyler Harbor, San Miguel island Comment
  RSA474093  Sonchus asper Blanche Trask 1901-04 s.n. Ventura San Nicolas Island. Comment
  RSA474094  Sonchus asper George Kanakoff 1940-4-12 s.n. Ventura San Nicholas Island, Comment
  RSA474095  Sonchus asper M. B. Dunkle 1939-7-23 8330 Ventura San Nicolas Island: Big Creek Canyon. Comment
  RSA474097  Sonchus asper H. M. Pollard 1945-7-23 s.n. Ventura Calif. Preparatory School grounds, Ojai. Comment
  RSA522085  Sonchus asper Steve Boyd, Timothy S. Ross, K. A. Boyd 1989-6-24 3751 Riverside Vail Lake area, near summit of 'Little Oak' Mtn. along road. 627 Comment
  RSA545266  Sonchus asper R. F. Thorne, C. W. Tilforth 1976-4-13 47480 Santa Barbara Santa Cruz Island. 1/2 mile WSW of laboratory, Central Valley 122 Comment
  RSA556446  Sonchus asper Julie Greene 1993-4-17 1226 Riverside San Jacinto Wildlife Area. Flat area west of Davis Rd. 445 Comment
  RSA556458  Sonchus asper Julie Greene 1993-4-30 1259 Riverside San Jacinto Wildlife Area. N of San Jacinto River drainage. 433 Comment
  RSA557784  Sonchus asper Steve Boyd, Timothy S. Ross 1992-4-29 7120 San Diego San Mateo Canyon Wilderness Area. San Mateo Canyon, southeast of Indian Potrero at base of eastern-most segment of Clark Trail. 213 Comment
  RSA564110  Sonchus asper Scott D. White 1992-6-29 92 -218 San Bernardino San Bernardino National Forest, vicinity of Rock Camp Ranger Station-from the Station to ca. 1 mi. due E& at widest part of site, S to Hwy 173. Growing in sandy bank of intermittent stream, near Rock Camp. Comment
  RSA591920  Sonchus asper L. C. Wheeler 1967-5-8 9314 Los Angeles Liebre Mountains. Foothills northeast of Saugus. 381 Comment
  RSA594462  Sonchus asper Steve Boyd, Lauren Raz 1996-9-24 8946 Los Angeles Liebre Mountains, Knapp Ranch area at upper end of Castaic Creek drainage in broad alluvial valley at head of Cienaga Canyon, south of Liebre Mountain 915 Comment
  RSA596190  Sonchus asper Lauren Raz, S. D. Boyd 1996-10-23 023 Los Angeles Liebre Mountains. Entrance to Ruby Canyon on Forest Service Road 6N24 ca. 1/10 mile from junction with Lake Hughes Road 609 Comment
  RSA596813  Sonchus asper Timothy S. Ross, J. Mark Porter 1995-5-4 8471 Los Angeles Liebre Mountains, Texas Canyon: ca 3.6 road miles NE of Bouquet Canyon Road. 623 Comment
  RSA599737  Sonchus asper L. C. Wheeler 1967-11-18 s.n. Los Angeles San Gabriel Mountains: Middle Fork of Mill Creek, off Big Tujunga. 1067 Comment
  RSA608431  Sonchus asper L. C. Wheeler 1936-8-22 4388 Monterey Carmelo Meadow, Pt. Lobos Reserve 9 Comment
  RSA624017  Sonchus asper C. J. Fotheringham 1996-4-21 s.n. Riverside Shipley perserve, post-fire recovery site #16. Coastal sage community. 475 Comment
  RSA708222  Sonchus asper Scott D. White, Angelia Carey 2004-5-7 10336 Riverside San Jacinto Mountain foothills: Indian Creek and adjacent foothills. 549 Comment
  RSA718598  Sonchus asper Michael Honer 2006-5-13 2292 San Bernardino Rocky S-facing slopes appx. 4 mi. WNW of Flamingo Heights. 1341 Comment
  RSA729216  Sonchus asper Naomi Fraga, Sarah J. De Groot 2003-6-9 833 Kern The Owens Peak Eastern Watershed. Unamed Canyon between Buene Vista and Manuel Canyon, in the drainage of Morris Peak, draining into Indian Wells Canyon. 1707 Comment
  RSA729815  Sonchus asper R. G. Swinney 1998-7-10 6379 Los Angeles San Gabriel Mtns.: Prairie Fork, near Cabin Flats Campground 1622 Comment
  RSA740835  Sonchus asper Scott D. White, Justin M. Wood 2008-7-8 12395 Riverside San Jacinto Mountains: Johnson Meadow. 1439 Comment
  RSA741084  Sonchus asper Justin M. Wood 2008-11-17 227 Riverside Temecula - Murrieta Creek, downstream of 1st street bridge. 293 Comment
  RSA741239  Sonchus asper Orlando Mistretta 2008-7-28 3514 San Bernardino Santa Ana River Canyon. Along Canyon bottom near junction of Seven Oaks Road and Radford Camp Road. 1652 Comment
  RSA741572  Sonchus asper Scott D. White, Justin M. Wood 2008-6-17 12165 Riverside Garner Valley- Kenworthy Station (USFS) 1378 Comment
  RSA751661  Sonchus asper P. DeVries, Sarah J. De Groot 2009-5-19 7454 Kern Western Transverse Range; San Emigdio Mtns. Region; Bitter Creek National Wildlife Refuge; mid-Bitter Creek Cyn; ca. 1.9 air miles SE of the junction of Cerro Noroeste and Klipstein Cyn Rd. 1117 Comment
  RSA752592  Sonchus asper Scott D. White, J. D. England 2009-7-8 13236 -B San Bernardino San Bernardino Mountains: Cienega Seca Creek, between Heart Bar Campground (Fish Creek Trail) and 7,000 ft. 2095 Comment
  RSA752772  Sonchus asper Justin M. Wood, Dustin Ray 2009-7-1 1019 San Bernardino Cienega Seca Creek 2134 Comment
  RSA754076  Sonchus asper Naomi Fraga, Nathan Dean, Jordan Rainbow 2009-7-21 3102 San Bernardino Santa Ana River near San Ana River Road, east of Rattlesnake Creek. 1860 Comment
  RSA762431  Sonchus asper R. G. Swinney 2008-10-16 9632 San Bernardino Wrightwood, Twin Lakes at Wrightwood Country Club, SW of junction of Willow St. and Oriole Rd. 1841 Comment
  RSA771316  Sonchus asper R. F. Thorne, Percy C. Everett 1965-5-11 34565 Los Angeles Santa Catalina Island. N beach of Little Harbor. 2 Comment
  RSA773611  Sonchus asper R. G. Swinney 2009-6-12 11121 Los Angeles Shoemaker Canyon Rd., at Blind Deer Spring in first canyon north of Shoemaker Canyon, a tributary of East Fork San Gabriel River. 652 Comment
  RSA781921  Sonchus asper Duncan S. Bell, Jennifer Pilapil 2011-7-11 2760 San Bernardino San Bernardino National Forest: northwest of Holcomb Valley, just south of the junction of forest service road 3N16 and forest service road 3N17, approximately 1.6 air miles northwest of Hitchcock Spring. 2199 Comment
  RSA788560  Sonchus asper Duncan S. Bell 2012-3-8 3144 Riverside Southern section of the Mecca Hills; north side of the canal, approximately 4.75 air miles southeast of where Box Canyon Road crosses the Coachella Canal. 16 Comment
  RSA789243  Sonchus asper Naomi Fraga, Erika Gardner, Beth Kempton, Tom Kerrin-Torres, Michael Wall 2008-7-17 2419 Riverside Mount San Jacinto State Park; Hidden Lake 2652 Comment
  RSA797522  Sonchus asper Holly C. Forbes 1987-9-28 FS- 582 Inyo McNally Canal at south end of Fish Slough. Fish Slough: a desert wetland system 4.5 miles north of Bishop at the northern end of Owens Valley. 1274 Comment
  RSA798089  Sonchus asper R. F. Thorne, E. W. Lathrop, Walter Wisura 1977-7-8 49582 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  SBBG101238  Sonchus asper S. A. Junak 1991-4-17 SC 2277 Santa Barbara rd to Coches Prietos Anchorage, above Alameda de los Coches Prietos, 0.6 mi S of intersection with South Ridge Rd 225 Comment
  SBBG101243  Sonchus asper S. A. Junak 1991-4-16 SC 2272 Santa Barbara Canada de la Portezuela, 1.4 mi W of top of Portezuela grade 259 Comment
  SBBG103081  Sonchus asper S. A. Junak 1992-5-13 SN 893 Ventura SE of Jackson Pk, along first ridge W of Range Marker Poles (at E end of Dutch Harbor) 231 Comment
  SBBG104262  Sonchus asper M. D. Proctor, E. A. Young 1993-4-11 ROB 363 San Luis Obispo Sulphur Spring Rd in middle of Area R; Camp Roberts Comment
  SBBG104268  Sonchus asper M. D. Proctor, E. A. Young 1993-3-24 ROB 329 San Luis Obispo ca. 1 km NW of Chorro Reservoir; Camp San Luis Obispo Comment
  SBBG109505  Sonchus asper C. B. Hardham 1959-5-12 4516 Monterey 3.7 mi N of San Antonio School, Lockwood-San Lucas Rd Comment
  SBBG110003  Sonchus asper C. B. Hardham 1957-6-15 2277 San Luis Obispo Villa Crk Comment
  SBBG110004  Sonchus asper C. B. Hardham 1957-5-12 1916 San Luis Obispo near spring, along trail to Green's Lake Comment
  SBBG111225  Sonchus asper P. Douglas, E. Painter 1994-5-22 HL 463 Monterey Nacimiento River, ca. 0.3 km N of Los Bueyes Rd, ca. 0.8 km SE of USFS boundary, ca. 2 km N of McKern Trail; Ft Hunter Liggett 400 Comment
  SBBG111947  Sonchus asper S. A. Junak 1997-3-20 WA 429 Ventura just SW of Camel Pk 249 Comment
  SBBG129152  Sonchus asper A. Sawdo 1988-5-10 Santa Barbara Arlington Cyn Comment
  SBBG130415  Sonchus asper S. A. Junak 2002-4-18 SC 4395 Santa Barbara N side of Montanon ridge, just W of trail to Prisoners Harbor 472 Comment
  SBBG131191  Sonchus asper S. A. Junak, R. Philbrick 1980-5-8 WA 177 Ventura Cherry Cyn Comment
  SBBG14114  Sonchus asper M. A. Piehl 1962-5-15 62277 Santa Barbara ca. 1 mi from Stanton Ranch headquarters, E along main rd 121 Comment
  SBBG14126  Sonchus asper M. A. Piehl 1962-5-15 62146 Santa Barbara Canyon del Puerto, ca. 0.5 mi from Stanton Ranch headquarters 45 Comment
  SBBG17953  Sonchus asper E. R. Blakley 1963-5-9 5769 Ventura jct of Cherry Cyn, 1/4 way toward its mouth, NW of Triangulation Pt Camel 76 Comment
  SBBG18635  Sonchus asper H. M. Pollard 1963-6-2 Ventura between railroad and beach; ca. 1 mi W of Ventura River estuary Comment
  SBBG24997  Sonchus asper E. R. Chandler 1966-7-22 3171 Santa Barbara rd to Pt Sal, head of Corralitos Cyn Comment
  SBBG30803  Sonchus asper S. A. Junak 1998-5-2 SCa 646 Los Angeles S of rd to East Pk, on ridge SW of Pk 1245, ca. 0.9 air mi WNW of East Pk 252 Comment
  SBBG32624  Sonchus asper R. N. Philbrick with M. R. Benedict 1968-5-24 68 335 S Santa Barbara just S of planted palm tree, west Cuyler Harbor 7 Comment
  SBBG32689  Sonchus asper R. N. Philbrick with D. W. Ricker 1967-3-18 B 67 -1 Ventura E end of Frenchman's Cove [Frenchys Cove], above splash zone 6 Comment
  SBBG36468  Sonchus asper R. N. Philbrick with J. R. Haller 1966-3-3 66 81 a Santa Barbara Arlington Pasture, NW portion of island Comment
  SBBG36470  Sonchus asper R. N. Philbrick with J. R. Haller 1966-3-3 B 66 -79 Santa Barbara Wreck Cyn 15 Comment
  SBBG37474  Sonchus asper W. A. Bryan 1922-7-14 Santa Barbara Santa Rosa Island Comment
  SBBG39843  Sonchus asper E. R. Blakley 1959-4-26 2795 Ventura edge of water catchment area near the center of island 60 Comment
  SBBG42261  Sonchus asper M. B. Dunkle 1939-7-31 8396 Santa Barbara Cuyler Harbor Comment
  SBBG44833  Sonchus asper H. M. Pollard 1972-5-4 Ventura Ventura River, N of and near Foster Park bridge, Foster Park Comment
  SBBG48100  Sonchus asper L. S. Matlovsky -Jun-1974 DM 5931 -34 Santa Barbara mouth of Bell Cyn, between Southern Pacific Railroad and ocean, just W of Sandpiper Golf Course, near Ellwood Comment
  SBBG48418  Sonchus asper L. S. Matlovsky 1974-5-17 DM 8837 -26 Santa Barbara Las Flores Cyn, ca. 16 mi W of Goleta Comment
  SBBG50332  Sonchus asper M. Coulter 1975-6-26 San Francisco SE Farallon Island Comment
  SBBG50344  Sonchus asper E. Cummings 1975-6-26 San Francisco SE Farallon Island, near carpenter shop Comment
  SBBG51703  Sonchus asper R. N. Philbrick 1967-4-15 B 67 -71 Santa Barbara ca. 1.5 mi W of Stanton Ranch between UC Field Station and Cascada 76 Comment
  SBBG51704  Sonchus asper M. R. Benedict 1967-3-20 Santa Barbara Coches Prietos 152 Comment
  SBBG67926  Sonchus asper R. Hoffmann 1929-4-28 Los Angeles Harold Comment
  SBBG79447  Sonchus asper R. Hoffmann 1930-12-6 Santa Barbara Water Cyn Comment
  SBBG79448  Sonchus asper R. Hoffmann 1930-4-10 Santa Barbara San Miguel Island Comment
  SBBG79455  Sonchus asper R. Hoffmann 1925-3-28 Santa Barbara Santa Cruz Island Comment
  SBBG79456  Sonchus asper R. Hoffmann 1930-9-21 Santa Barbara Twin Harbor Comment
  SBBG80157  Sonchus asper R. Hoffmann 1927-3-25 Santa Barbara San Miguel Island Comment
  SBBG83259  Sonchus asper M. Daily 1986-4-7 SCa-t- 6 Los Angeles Bird Rock Comment
  SBBG86411  Sonchus asper C. F. Smith 1945-6-9 1349 Santa Barbara SW of Botanic Garden, Mission Cyn; Santa Barbara Comment
  SBBG8849  Sonchus asper T. L. Secrest 1946-9-7 Santa Barbara near Biltmore Hotel, Montecito Comment
  SBBG8850  Sonchus asper C. F. Smith 1944-5-5 801 Santa Barbara W rim of Mission Cyn 365 Comment
  SBBG93990  Sonchus asper S. A. Junak, T. Ayers 1989-6-22 4070 San Luis Obispo Cuesta Ridge along main rd, 1.3 mi W of E boundary for the Cuesta Ridge Botanical Area, ca. 4.3 mi W of US Hwy 101 749 Comment
  SBBG96723  Sonchus asper R. N. Philbrick with J. R. Haller 1965-2-19 B 65 -391 Santa Barbara northernmost E branch of Lobos Cyn Comment
  SBBG97200  Sonchus asper S. A. Junak with R. Scott 1990-4-10 SC 1494 Santa Barbara headland on E side of Dick's Cyn 106 Comment
  SBBG97268  Sonchus asper S. A. Junak 1990-4-12 SC 1544 Santa Barbara just inland from mouth of Willows Cyn 3 Comment
  SD115502  Sonchus asper Jack Reveal, Duffie Clemons 1982-5-18 337 San Diego above creek in Ewing Oak Preserve, The Nature Conservancy, south of Mesa Grande Indian Reservation. 1095 Comment
  SD164787  Sonchus asper Andrew C. Sanders 2005-4-8 29374 San Diego Batiquitos Lagoon Ecological Reserve, just N of Leucadia, north side of the lagoon on east side of the I-5 Fwy Comment
  SD164788  Sonchus asper Andrew C. Sanders 2004-5-21 27960 San Diego Carlsbad, Agua Hedionda Ecological Reserve, off Park St. near Laguna Riviera Park, along foot trail along NE side of reserve 3 Comment
  SD173407  Sonchus asper Andrew C. Sanders 2005-6-22 31106 San Diego Buena Vista Lagoon Ecological Reserve (DFG), Carlsbad, south side of lagoon on the east side of I-5 Fwy 2 Comment
  SD173408  Sonchus asper Andrew C. Sanders 2005-6-17 31010 San Diego Boden Canyon Ecological Reserve at E end of San Pasqual Valley, lower part of reserve along Santa Ysabel Creek at confluence with Clevenger Canyon 200 Comment
  SD17765  Sonchus asper Frank F. Gander 1937-6-10 3985 San Diego South fork Featherstone Creek, Barona Valley Comment
  SD185159  Sonchus asper Andrew C. Sanders 2005-6-24 31254 San Diego San Dieguito Lagoon Ecological Reserve (DFG), west and south edges of reserve south of Palm Lane near San Dieguito Dr. Comment
  SD187367  Sonchus asper Scott D. White, Angelia Carey 2004-5-7 10336 Riverside Indian Creek and adjacent foothills. 548 Comment
  SD193247  Sonchus asper A. C. Sanders 2005-6-2 30423 San Diego Palomar Mountain, Plaisted Creek Ecological Reserve, northeast of Rincon and Pauma Valley. 701 Comment
  SD20688  Sonchus asper A. J. Stover 1938-4-7 151 San Diego Point Loma Comment
  SD212514  Sonchus asper Andrew C. Sanders 2005-5-6 29961 San Diego Blue Sky Ecological Reserve, east of Rancho Bernardo and north of Poway, along Green Valley Truck Trail, in canyon below turnoff to Lake Poway Quad: Escondido 7.5A Q. 213 Comment
  SD22186  Sonchus asper Frank F. Gander 1938-8-6 6324 San Diego Doane Valley, Palomar Mt. Comment
  SD22593  Sonchus asper Frank F. Gander 1938-8-30 6381 San Diego Laguna Public camp. Laguna Mts. Comment
  SD232205  Sonchus asper Scott D. White, Justin M. Wood 2008-7-8 12395 Riverside San Jacinto Mountains: Johnson Meadow. 1438 Comment
  SD233769  Sonchus asper A. C. Sanders, M. Elvin, C. Burrascano, A. Pinolo, A. Thompson, et al 2003-5-4 26546 San Diego Peninsular Range, San Ysidro Mtns: Opay Mountain, redige ca 2-3 miles E of the peak, around end of jeep trail (Otay Mountain 7.5' Q) 945 Comment
  SD253933  Sonchus asper Melanie Howe, Michael Kelly 2003-7-21 499 San Diego Comment
  SD26897  Sonchus asper Frank F. Gander 1940-4-18 8232 San Diego Herron Ranch, near DeLuz Comment
  SD30802  Sonchus asper Edith A. Purer 1934-4-21 San Diego roadside near Lake Cuyamaca Comment
  SD38310  Sonchus asper Edith A. Purer 1931-8-6 San Luis Obispo Oceano. Est. sand dunes. Comment
  SD5102  Sonchus asper Mary S. Snyder 1899-3-25 San Diego Pacific Beach Comment
  SD69713  Sonchus asper Robert F. Thorne 1966-4-29 Los Angeles Santa Catalina Island: near temporary pool above ranch in Middle Ranch Canyon; 230 Comment
  SD80417  Sonchus asper Helen V. Witham 1971-5-18 1464 San Diego roadsides. San Onofre Bluffs State Beach. 29 Comment
  SDSU531  Sonchus asper Frank F. Gander 1936-5-3 329 San Diego Cuyamaca Mts. Comment
  SEINET10474013  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 429 Butte Chico. Comment
  SEINET200989  Sonchus asper J. P. Tracy 1903-8-2 1925 Humboldt Immediate vicinity of Eureka. 0 Comment
  SEINET2055266 Image available Sonchus asper A. C. Sanders, E. J. Lott 1993-5-30 14127 San Bernardino East Mojave Desert: Cornfield Spring Cyn. W slope of Providence Mts., 4 mi. SE of Kelso. 914 Comment
  SEINET269478  Sonchus asper Scott D. White, Steve Ogg 1994-11-17 2497 Riverside City of Temecula, Murrieta Ck channel at confluence w/ Sta. Certrudis Ck 314 Comment
  SEINET4044450  Sonchus asper D. F. Sax 1997-1 sn Los Angeles Santa Monica Mountains; 3110 meters from coast. 502 Comment
  UC1070271  Sonchus asper P. L. Johannsen 1936-3-22 737 San Luis Obispo 3 1/4 mi nw Cerro San Luis Obispo; San Luis Obispo Quad., Plot 13 106 Comment
  UC1070274  Sonchus asper N. K. Carlson 1936-4-10 379 Calaveras Smith Flat Copperopolis Quad., , Plot 28 Comment
  UC1192245  Sonchus asper Verne Grant and Irving Schneider 1947-7-30 8190 Lassen s point w embayment Tule Lake; s point of w embayment Tule Lake Comment
  UC1199364  Sonchus asper Joseph P. Tracy 1934-8-6 13560 Humboldt along Mad River, near Blue Lake 15 Comment
  UC1199365  Sonchus asper Joseph P. Tracy 1935-5-19 13809 Humboldt near Myers (South Fork Eel River, North Coast Ranges); North Coast Ranges, South Fork Eel River 91 Comment
  UC1297664  Sonchus asper Victor Duran 1933-6-4 Inyo Silver Canyon White Mountains, Silver Canyon 1402 Comment
  UC1299835  Sonchus asper Richard S. Mitchell and Robert M. Lloyd 1964-5-17 2002 Inyo Silver Canyon White Mountains, Silver Canyon 1645 Comment
  UC1299955  Sonchus asper Robert M. Lloyd 1963-6-18 2700 Inyo 5.1 mi w White Mt. Road (Toll-House Spring, Westgard Pass); White Mountains, Westgard Pass, Toll-House Spring 1859 Comment
  UC147613  Sonchus asper Miss Harriet A. Walker 1908-6-27 1328 Placer Blue Canyon 1432 Comment
  UC1583971  Sonchus asper G. Schoolcraft 1990-7-31 2117 Lassen along Hwy 299 between Bieber and Nubieber 1249 Comment
  UC1609170  Sonchus asper Vernon H. Oswald and Lowell Ahart 1993-5-27 5422 Glenn refuge located 7 mi s Willows (along Norman Rd at rd into the Checking Station (between the sw corner of Pool 4 and the nw corner of Cell 1, Tract 23)); Sacramento National Wildlife Refuge 24 Comment
  UC162723  Sonchus asper H. M. Hall and H. P. Chandler Jun 15 1900-Jun 25 1900 Fresno Pine Ridge , Pine Ridge (Sierra Nevada Mountains) Comment
  UC164790  Sonchus asper J. P. Tracy 1903-8-2 1925 Humboldt immediate vicinity Eureka 0 Comment
  UC1922204  Sonchus asper Naomi Fraga, Sarah J. De Groot 2003-6-9 833 Kern Sierra Nevada; Southern Sierra Nevada region; Owens Peak eastern watershed. Unamed Canyon between Buene Vista and Manuel Canyon, in the drainage of Morris Peak, draining into Indian Wells Canyon. 1707 Comment
  UC1931063  Sonchus asper Scott D. White, Justin Wood 2008-7-8 12395 Riverside San Jacinto Mountains: Johnson Meadow. Comment
  UC2028287  Sonchus asper Barbara Ertter 1998-6-20 16235 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  UC36513  Sonchus asper H. P. Chandler 1900-2-26 529 Marin Mill Valley Comment
  UC36522  Sonchus asper J. Burtt Davy 1893-6-1 725 San Mateo Belmont Comment
  UC36537  Sonchus asper J. Burtt Davy 1898-9-15 Alameda San Leandro San Leandro (Western Middle California) Comment
  UC455693  Sonchus asper I. J. Condit 1911-7-13 Siskiyou Dunsmuir Comment
  UC519723  Sonchus asper Joseph Andorfer Ewan 1932-5-19 7533 Los Angeles near power house (Playa del Rey); Playa del Rey Comment
  UC571555  Sonchus asper H. K. Sharsmith 1934-6-10 1252 Santa Clara ne base Mount Hamilton (Santa Isabella Creek); ne base Mount Hamilton, Santa Isabella Creek 624 Comment
  UC571556  Sonchus asper H. K. Sharsmith 1934-6-10 1252 Santa Clara Santa Isabella Creek at ne base Mount Hamilton; ne base Mount Hamilton, Santa Isabella Creek 624 Comment
  UC582433  Sonchus asper Joseph P. Tracy 1932-5-22 10115 Humboldt between Miranda and Redway (South Fork Eel River); North Coast Ranges, South Fork Eel River 91 Comment
  UC582434  Sonchus asper Joseph P. Tracy 1932-5-22 10115 Humboldt between Miranda and Redway; North Coast Ranges, South Fork Eel River 91 Comment
  UC582436  Sonchus asper Joseph P. Tracy 1932-6-4 10132 Humboldt Bridgeville 198 Comment
  UC604735  Sonchus asper Louis C. Wheeler 1936-8-22 4388 Monterey Pt. Lobos Reserve , Pt. Lobos Reserve (Carmelo Meadow) 9 Comment
  UC685686  Sonchus asper Bob Rodin 1943-5-29 231 Alameda by side upper road e Botanical Garden (Strawberry Canyon, University of California campus, Berkeley); Berkeley, University of California campus, Strawberry Canyon Comment
  UC685687  Sonchus asper Bob Rodin 1943-4-16 117 Alameda slope w Botanical Garden (Strawberry Canyon, University of California campus, Berkeley); Berkeley, University of California campus, Strawberry Canyon Comment
  UC75804  Sonchus asper Miss K. D. Jones May 1901 San Francisco Lake Merced , Lake Merced (San Francisco Peninsula) Comment
  UC830463  Sonchus asper Mrs. W. J. Williamson 1919-5-24 177 Tuolumne Spring Gulch near Bear Creek; Spring Gulch, Bear Creek 320 Comment
  UC92387  Sonchus asper Edward Palmer, M. D. 1875-1 San Diego Cuiamaca Mts. Cuiamaca Mts. (Cuyamaca Mts.) (Southern part of San Diego Co.) Comment
  UC92397  Sonchus asper T. S. Brandegee 1894-4-22 San Diego San Diego Comment
  UCD47380  Sonchus asper G. Ledyard Stebbins 1983-5-12 C 3106 Solano Stebbins Cold Canyon Reserve. Along canyon trail above creek crossing. Comment
  UCD47381  Sonchus asper G. Ledyard Stebbins 1981-5-31 C 129 Solano Stebbins Cold Canyon Reserve. Wild Horse Canyon. Comment
  UCD50131  Sonchus asper M. Tu 1995-9-12 183 Sacramento Cosumnes River Preserve Plant Inventory - Tall Forest. Collected from the southern end of the Tall Forest, about 150 m E from the pump station. 1 Comment
  UCD53973  Sonchus asper T. Hall 1994-4-17 19- 5 Sacramento Cosumnes River Preserve Plant Inventory; close to road; 1/4 of the way across from east edge. Comment
  UCD54139  Sonchus asper Elizabeth Neese; J. J., M. Homrighausen, and C. Clapton 1992-3-22 19840 Sacramento Cosumnes River Preserve; ca. 15 miles south of Sacramento; between railroad tracks and Franklin Road; Inventory Area 7, # 7A. Comment
  UCD72466  Sonchus asper Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen 2007-5-12 3800 Colusa BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. Bank of Bear Creek near north end of bridge, west side of creek. 260 Comment
  UCR100295  Sonchus asper B. G. Pitzer 1997-4-20 3182 Riverside Lakeview Mtns, Intersection of 'Dutton' Street with Voltaire Vista Road. (Note: Dutton ends in T-intersection at Sardis Lane, which makes a 90 deg. E turn onto Brent Lane, which becomes Voltaire Vista Road east of Elton Lane. Therefore, this locality is actually the intersection of Elton Lane & Voltaire Vista Road.) 610 Comment
  UCR102862  Sonchus asper A. C. Sanders 1997-3-26 20115 Riverside Lake Skinner area, arroyo draining toward the SE arm of the lake, crossing the entrance road near the old house site (and relocated school building) 453 Comment
  UCR112733  Sonchus asper A. C. Sanders, Steve Boyd 1997-4-20 20498 Kern Hills S of the San Joaquin Valley, San Emigdio Ranch, San Emigdio Creek Canyon 3 miles due south of ranch headquarters at junction with dirt road to the west 686 Comment
  UCR113875  Sonchus asper Mitch Provance, A. C. Sanders 2000-7-4 2087 Riverside Riverside, Santa Ana River Wash, between the Market St. and Riverside Ave crossings 244 Comment
  UCR114867  Sonchus asper A. C. Sanders, G. F. Pratt, C. Pierce, G. R. Ballmer, R. Mattoni 1997-6-21 20778 Inyo Northern Mojave Desert, China Lake Naval Weapons Center, Coso Range at Coso Springs, site of Coso mining town 1768 Comment
  UCR128571  Sonchus asper A. C. Sanders, M. Elvin, C. Burrascano, A. Pigniolo, A. Thompson, and others 2003-5-4 26546 San Diego Peninsular Range, San Ysidro Mountains, Otay Mountain, ridge c. 2-3 miles east of the peak, around end of jeep trail 945 Comment
  UCR130237  Sonchus asper George K. Helmkamp, E. A. Helmkamp 2001-4-27 6520 Kern Tehachapi Mtns, Hart Flat turnoff from Calif. Hwy 58 884 Comment
  UCR149985  Sonchus asper Scott D. White, Angelia Carey 2004-5-7 10336 Riverside San Jacinto Mountains, Indian Creek and adjacent foothills 610 Comment
  UCR152502  Sonchus asper A. C. Sanders 2005-4-8 29374 San Diego South Coast, Batiquitos Lagoon Ecological Reserve, just north of Leucadia, north side of the lagoon on east side of the I-5 Fwy 6 Comment
  UCR154082  Sonchus asper A. C. Sanders 2005-5-6 29961 San Diego Peninsular Ranges; Coastal Foothills region, Blue Sky Ecological Reserve, east of Rancho Bernardo and north of Poway, along Green Valley Truck Trail, in canyon below turnoff to Lake Poway 213 Comment
  UCR154412  Sonchus asper A. C. Sanders 2005-6-2 30423 San Diego Peninsular Range, Palomar Mtn., Plaisted Creek Ecological Reserve, NE of Rincon & Pauma Valley, between Plaisted Cr. and Hwy 76, SE lobe of reserve near residences abandoned in 1996 793 Comment
  UCR154990  Sonchus asper A. C. Sanders, T. B. Salvato 2005-6-17 31010 San Diego Peninsular Range, Boden Canyon Ecological Reserve at E end of San Pasqual Valley, lower part of reserve along Santa Ysabel Creek at confluence with Clevenger Canyon 213 Comment
  UCR159262  Sonchus asper A. C. Sanders, Kelly Volansky 2005-8-31 31586 Riverside Santa Ana Mtns. Region, Santa Rosa Plateau, hills west of headwaters of De Luz Creek, 50 acre parcel on east side Avenida La Cresta south of Sierra Elena Rd., c. 0.5 mi. N of Tenaja Rd. 701 Comment
  UCR163429  Sonchus asper B. G. Pitzer 1999-6-9 3991 San Bernardino Eastern Mojave Desert, Piute Valley, powerline road 1 mile north of telephone cable road, c. 2 miles SSE of Piute Spring/Ft. Piute 740 Comment
  UCR163823  Sonchus asper A. C. Sanders 2005-6-24 31254 San Diego South Coast, San Dieguito Lagoon Ecological Reserve (DFG), west and south edges of reserve south of Palm Lane near San Dieguito Dr. 15 Comment
  UCR166033  Sonchus asper Beecher Crampton 1954-10-19 2294 Solano San Francisco Bay, 0.5 mi south of Suisun City 3 Comment
  UCR166820  Sonchus asper Michael D. Wilcox 2005-11-19 s.n. San Bernardino San Bernardino Valley, Redlands, unincorporated area, on the bluffs above the Santa Ana River 366 Comment
  UCR167844  Sonchus asper T. B. Salvato, Melissa Clemons 2005-6-23 1328 Riverside Peninsular Range; Temescal Valley, 3 miles NW of Alberhill, Temescal Canyon Road at Corona [Lee] Lake 366 Comment
  UCR172137  Sonchus asper A. C. Sanders 2006-5-11 32253 Riverside Warm Springs Valley, N edge of city of Lake Elsinore, 35 acre parcel south of the intersection of Collier Ave. and Riverside Dr., NE of Alberhill Crk., NW of Enterprise Way 389 Comment
  UCR174089  Sonchus asper A. C. Sanders 2006-5-19 32434 Riverside Peninsular Range, Hills between Murrieta and Menifee Valley, west of I-215, south of Bundy Cyn./Scott Rd. and north of Clinton Keith Rd. 518 Comment
  UCR181576  Sonchus asper R. G. Swinney 1996-8-12 5316 San Bernardino Eastern San Gabriel Mtns., Wrightwood at Wright Lake 1841 Comment
  UCR186563  Sonchus asper A. C. Sanders 2006-5-16 32343 Los Angeles Tehachapi Mtns. Foothills, along the road to the National Cement Plant, c. 1/4 mile north of Hwy 138, south the California Aqueduct 1012 Comment
  UCR188981  Sonchus asper T. B. Salvato, A. C. Sanders 2006-5-23 1464 San Bernardino San Bernardino Valley, Cajon Wash at Glen Helen Parkway, south of Cajon Blvd at Devore 616 Comment
  UCR191214  Sonchus asper A. C. Sanders 2008-4-29 35146 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, western end of Loma Ridge on road to sheriff's training facility, c. 1.5 mi. SW of Santiago Reservoir 335 Comment
  UCR192457  Sonchus asper A. C. Sanders, Fred M. Roberts 2008-3-25 34553 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR202185  Sonchus asper Jon P. Rebman, J. Gregory, K. Rich, M. Wall 2006-5-18 12728 San Diego Monte Vista Ranch (owned by The Nature Conservancy), south of Ramona, northwest of San Vicente Reservoir, south of San Vicente Road along Chuckwagon Road onto the Ranch, western portion of Ranch, along riparian zone north of Daney Canyon. Square M14 302 Comment
  UCR202576  Sonchus asper Scott D. White, Justin M. Wood 2008-7-8 12395 Riverside San Jacinto Mountains, Johnson Meadows 1488 Comment
  UCR205097  Sonchus asper R. G. Swinney 2008-4-11 8659 Los Angeles San Gabriel Mtns., San Dimas Experimental Forest, Lewis Paul Canyon, above waterfall at junction of Big Dalton Cyn. Rd. 549 Comment
  UCR20813  Sonchus asper Steve Boyd 1980-5-14 s.n. Riverside Perris Basin, Motte Reserve, in the rocky hills 2.5 mi NW of Perris 518 Comment
  UCR210516  Sonchus asper R. G. Swinney 2008-12-4 9935 Los Angeles San Gabriel Mtns., Azusa, mouth of San Gabriel Canyon 1 mi. north of Foothill Blvd. 201 Comment
  UCR212988  Sonchus asper Justin M. Wood, Dustin Ray 2009-7-1 1019 San Bernardino San Bernardino Mountains, Cienaga Seca Creek, between 7000 ft and 7200 ft 2195 Comment
  UCR22056  Sonchus asper Steve Boyd 1980-4-27 136 Riverside Gavilan Hills, Harford Springs County Park, NW corner of the Gavilan plateau 640 Comment
  UCR222775  Sonchus asper R. G. Swinney 2009-5-6 10691 Los Angeles Transverse Range; San Gabriel Mtns./Western Mojave Desert, Carr Canyon at confluence with Little Rock Creek 909 Comment
  UCR223709  Sonchus asper R. G. Swinney 2009-6-12 11121 Los Angeles Transverse Range; San Gabriel Mtns., Shoemaker Canyon Rd., at 'Blind Deer Spring' in first canyon north of Shoemaker Canyon, a tributary of East Fork San Gabriel River 652 Comment
  UCR236798  Sonchus asper Jon P. Rebman, Warren Schmidtmann, B. Lardiere, E. Cunningham 2011-4-22 21183 San Diego Camp Pendleton, Victor Training Area, south of Las Pulgas Road, west of I-5, on coastal mesas and canyons above the beach; northwest of the rest stop on I-5 southbound. Square F4. 15 Comment
  UCR237815  Sonchus asper Mark A. Elvin 2003-2-2 2293 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  UCR238119  Sonchus asper Mark A. Elvin 2002-5-4 2001 San Diego Peninsular Range, north side of Otay Mountain along Otay Mountain Truck Trail, between base at Otay Lakes Rd. and 2500 ft. level 762 Comment
  UCR239429  Sonchus asper Jon P. Rebman, Warren Schmidtmann, G. Kenney, et al. 2012-3-28 23113 San Diego San Onofre Mountains;, Camp Pendleton: Training Area Romeo 11; east of Hwy I-5 and southwest of San Onofre Peak, along San Onofre Peak Road and surrounding slopes. Square: D3 280 Comment
  UCR254725  Sonchus asper Peter Rubtzoff 1975-7-8 8154 El Dorado Sierra Nevada Mtns, U.C. Blodgett Forest Research Station, Spring Road, 0.15 mi. north of 'County Road' [=Wentworth Springs Rd.?] 1341 Comment
  UCR254756  Sonchus asper Peter Rubtzoff 1975-6-26 8139 El Dorado Sierra Nevada Mtns, U.C. Blodgett Forest Research Station, Sand Mountain Blvd., 0.65 miles south of 'County Road' [=Wentworth Springs Rd.?] 1186 Comment
  UCR258851  Sonchus asper R. G. Swinney 2010-3-16 11911 Los Angeles San Gabriel Mountains/Verdugo Mountains, Confluence of Little Tujunga Wash and Big Tujunga Wash at I-210 crossing, within 50 m on north and south sides of I-210 329 Comment
  UCR259230  Sonchus asper Mitch Provance, Callen Huff 2009-4-29 10692 Los Angeles Tehachapi Mountains, Tejon Ranch, south of Lebec, lower slopes above Interstate 5, about 0.7 miles east of Gorman; site PO1088/1090 1230 Comment
  UCR260932  Sonchus asper Duncan S. Bell, Caitlin Elam, Evan Meyer 2013-6-20 5183 San Bernardino Transverse Range; San Gabriel Mtns., Sheep Mountain Wilderness, near the head of the North Fork of Lytle Creek, eastern drainage of Pine Mountain, Paiute Canyon 2204 Comment
  UCR264123  Sonchus asper Duncan S. Bell, Evan Meyer, Perriene Veguer 2014-5-29 s.n. San Bernardino San Bernardino Mtns., Bighorn Mountains; San Bernardino National Forest; Arrastre Creek, at the south end of Horsethief Flat 1487 Comment
  UCR264590  Sonchus asper Mitch Provance, Callen Huff 2009-4-20 10433 Kern Tehachapi Mountains, Tejon Ranch, Pescado Creek at the mouth of Bronco Canyon, 7.5 miles NE of Quail Lake 1048 Comment
  UCR26808  Sonchus asper John LaSalle 1982-3-21 s.n. Santa Barbara Channel Islands, Santa Cruz Island, ridge between head of Alamos Canyon and Centinela 445 Comment
  UCR270065  Sonchus asper R. G. Swinney 2010-5-12 12722 Los Angeles San Gabriel Mountains, Barrell Springs Road at jct. with 42nd St. East, on SW side of road from 30 to 150 meters west of 42nd, NE side of Palmdale Ditch, San Andreas Rift Zone 921 Comment
  UCR270197  Sonchus asper A. C. Sanders, Jeanne Marie Acceturo & participants in Jepson Workshop 2016-4-3 42416 Riverside Peninsular Range, UC Emerson Oaks Reserve, c. 8 miles southeast of Temecula, south of Hwy 79 at E end of Pauba Valley, south end of Los Caballos Road, c. 0.3 km NW (161 deg. ) of water tank 473 Comment
  UCR271537  Sonchus asper R. G. Swinney 2011-3-18 14167 Los Angeles San Gabriel Mountains, Glendora, east side of Mull Canyon, southeast of Mull Canyon debris basin, along Marshall Trail 366 Comment
  UCR271653  Sonchus asper R. G. Swinney 2011-3-26 14201 Los Angeles San Gabriel Mts., San Dimas Experimental Forest, West Fork San Dimas Canyon, 0.1 to 0.6 mile upstream from confluence with San Dimas Cyn. 524 Comment
  UCR274834  Sonchus asper Duncan S. Bell, Perrine Veguer 2014-5-8 6829 San Bernardino San Bernardino Mountains, Bighorn Mountain Wilderness, eastern slope of Tip Top Mountain, in Blue Cut Canyon 1732 Comment
  UCR276971  Sonchus asper R. G. Swinney 2010-6-1 13135 Los Angeles San Gabriel Mountains, Kentucky Springs, c. 1 mile west of Angeles Forest boundary sign at Angeles Forest Hwy, c. 0.5 mile south of Kentucky Springs Rd. 1122 Comment
  UCR282136  Sonchus asper R. G. Swinney 2014-5-15 16534 Los Angeles San Gabriel Mountains, Azusa Peak, 0.06 mile south of Glendora Ridge Motorway, 1.34 miles due east of Hwy. 39, 0.15 mile east of Garcia Trailhead 630 Comment
  UCR37501  Sonchus asper George K. Helmkamp 1984-4-20 840420- 36 San Bernardino Little San Bernardino Mountains, Big Morongo Preserve of The Nature Conservancy, south of the town of Morongo Valley in Big Morongo Canyon 765 Comment
  UCR41314  Sonchus asper N. M. Fellows, A. C. Sanders 1985-5-7 174 Riverside San Jacinto Mountains, Oasis de los Osos Preserve, off Snow Creek Canyon at the N foot of the San Jacinto Mountains, 1 mi west of Snow Creek Village 488 Comment
  UCR50683  Sonchus asper Lyman Benson 1943-8-25 11429 Lake Kelseyville, Middle North Coast Range, Clear Lake Drainage 412 Comment
  UCR59928  Sonchus asper S. J. Myers 1989-4-28 s.n. Los Angeles Palmdale area, Elizabeth Lake Road at California Aqueduct 884 Comment
  UCR67983  Sonchus asper O. F. Clarke 1971-6-7 s.n. Ventura Chorro Grande Canyon, draining into Sespe Creek from the north off Pine Mountain, north of Ojai, near U.S. Gypsum quarry 1315 Comment
  UCR75630  Sonchus asper A. C. Sanders, O. F. Clarke, T. Krantz, R. F. Thorne 1993-4-27 13810 San Bernardino San Bernardino Mtns, Arrowhead Hot springs and immediate vicinity. Coldwater Canyon c. 1/2 mile east of the old Arrowhead Hot Springs Hotel 579 Comment
  UCR76393  Sonchus asper Scott D. White 1993-7-6 1612 San Bernardino San Bernardino Mtns. Cismontane Foothills, Downslope from mouth of Badger Canyon, c. 1 air mi. NE of Calif. State Univ., San Bernardino 550 Comment
  UCR82167  Sonchus asper A. C. Sanders, P. MacKay 1994-6-12 14707 San Bernardino San Bernardino Mtns., Crowder Canyon area of Cajon Pass, 2 to 2.2 miles east of Hwy 215 along Hwy 138 1050 Comment
  UCR85454  Sonchus asper R. G. Swinney 1993-10-8 2666 San Bernardino San Gabriel Mtns, Controversy Springs, at head of Cajon Canyon, SE of Mt. Top Junction, 0.5 mi south of Hwy 138 on Forest Service Road 3N37 1402 Comment
  UCR87246  Sonchus asper R. G. Swinney 1991-10-19 1677 San Bernardino San Gabriel Mtns, Lost Lake, Lone Pine Canyon, San Bernardino National Forest 848 Comment
  UCR87247  Sonchus asper R. G. Swinney 1993-6-22 2302 San Bernardino San Gabriel Mtns., Lone Pine Canyon, c. 300 m south of Lone Pine Canyon Road and 4 mi west of Swarthout Canyon Road, c. 0.5 mi. above Clyde Ranch 1549 Comment
  UCR91282B  Sonchus asper Scott D. White, M. Jacobsmeyer 1996-4-20 3968 B Riverside Perris Basin, near Perris Airport; c. 100 m south of Case Road and 100 m west of the San Jacinto River Channel 433 Comment
  UCSB13491  Sonchus asper Breedlove, Dennis 1961-2-25 Santa Barbara Along the Alamo Pintado Creek from 7-8 miles north of Los Olivos; base of Figueroa Mountain, Birabent Canyon, San Rafael Range 426 Comment
  UCSB39165  Sonchus asper Ferren, Wayne 1979-5-8 Santa Barbara Ca. 7 m. W of berm along W bank of Santa Monica Creek, Carpinteria Salt Marsh, Carpinteria Comment
  UCSB49706  Sonchus asper Ferren, Wayne 1983-4-16 Santa Barbara La Purisima Mission State Historic Park. 2 km NE of Lompoc City Limit; on north-east side of Purisima Canyon Comment
  UCSB52529  Sonchus asper Magney, David 1985-3-25 Santa Barbara Along Ridge Road on Santa Cruz Island 179 Comment
  UCSB56247  Sonchus asper Forbes, Holly 1987-9-28 Inyo Fish Slough; a desert wetland system 4.5 mi. north of Bishop at the northern end of Owens Valley; study site includes 14 sq. mi. along a 7 mi. drainage axis; McNally Canal at S end of Fish Slough 1341 Comment
  UCSB65291  Sonchus asper Magney, David; Wellonen, Cher 2001-4-2 Santa Barbara Outer South Coast Ranges; Orcutt Quad., T9N, R35W, Punta De La Laguna, San Bernardino BM; between Solomon and Black Roads (~280-ac site); N of SR1, S of Santa Maria Airport, W of Orcutt 49 Comment
  UCSB67950  Sonchus asper Hill, Sandy; Walden, Chris; Sankey, Jean 2010-5-2 Santa Barbara Arroyo Hondo Preserve, Upper Outlaw Trail 6m down from Creek crossing 50 Comment
  UCSB69565  Sonchus asper Honer, Michael 2007-5-21 Santa Barbara Coastal Plains & Basins; Santa Barbara Coastal Plain region; Isla Vista; seasonal wet drainage at end of Fortuna Lane, draining W into Devereux Slough, adjacent to Del Sol Vernal Pool County Park 9 Comment
  UCSB71605  Sonchus asper Schmalzer, P. 1986-3-18 Santa Barbara South of SLC-6, Vandenberg Air Force Base Comment
  UCSC000851  Sonchus asper Unknown 1995-4-11 s.n. San Luis Obispo 1.9 miles N.W. of Mammoth Rock School Mammoth Rock School - Adelaida Comment
  YM-YOSE109175  Sonchus asper Aaron King 1998-6-25 1001 Mariposa LOWER RIVER CAMPGROUND, YOSEMITE VALLEY, YOSEMITE NATIONAL PARK, CALIFORNIA; 50M WEST OF ENTRANCE; LEVEL; SANDY SOIL; AREA FLOODED IN 1997. Comment
  CAS-BOT-BC365982  Sonchus asper Gates No date on label s.n. Unknown Unspecified Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC365984  Sonchus asper Lowell Ahart 1980-5-4 2156 Butte Thermalito 65 Comment
  CAS-BOT-BC365985  Sonchus asper John Thomas Howell 1933-5-14 11248 Contra Costa Hills east of St. Mary's College Comment
  CAS-BOT-BC365993  Sonchus asper Dr. Barton W. Evermann 1918-3-29 s.n. Los Angeles Santa Catalina Isl. Comment
  CAS-BOT-BC365997  Sonchus asper Richard H. Wagner 1995-8-18 299 Mono Slinkard Valley 1889 Comment
  CAS-BOT-BC365998  Sonchus asper R. E. Frenkel 1963-10-27 299 Napa In the vinyard north of Oakville Cross Road Comment
  CAS-BOT-BC365999  Sonchus asper Gordon H. True 1966-4-27 2723 Nevada Hills just north of Rock Creek at old McCourtney Road crossing 121 Comment
  CAS-BOT-BC367111  Sonchus asper Javier Penalosa 1962-12-23 2631 Marin Tiburon Peninsula. Paradise Drive at Playa Verde (a street 1.4 mi. northwest of rd. to Naval Net Depot) Comment
  CAS-BOT-BC367113  Sonchus asper Roxana S. Ferris 1954-4-23 12729 Marin Ditches near Dillon's Beach Post Office Comment
  CAS-BOT-BC367114  Sonchus asper Robert M. King 1980-7-8 8407 Marin One mile north of Marshall Comment
  CAS-BOT-BC374402  Sonchus asper John Thomas Howell 1961-6-21 36684 Plumas Greenville 1097 Comment
  CAS-BOT-BC374404  Sonchus asper John Thomas Howell 1975-6-15 51130 Plumas Quincy 1036 Comment
  CAS-BOT-BC374405  Sonchus asper John Thomas Howell 1963-6-23 39613 Monterey East of King City on road to Lonoak near San Benito Co. line Comment
  CAS-BOT-BC374411  Sonchus asper Eugene Carter 1974-8-30 882 Trinity Salmon-Trinity Alps and vicinity. Along the North Fork Road near the Rich Gulch Road 495 Comment
  CAS-BOT-BC374412  Sonchus asper Henry M. Pollard 1945-8-2 s.n. Ventura Ventura River Basin. Calif. Prep. School Grounds Comment
  CAS-BOT-BC374417  Sonchus asper Cherie L. Wetzel 1969-10-26 1097 Alameda Niles Canyon and Vicinity. Shilling's Park Comment
  CAS-BOT-BC374418  Sonchus asper Cherie L. Wetzel 1969-7-25 972 Alameda Niles Canyon and Vicinity. Along railroad tracks between Palomares Rd. and the Kaiser Plant abutting Swizzig's property Comment
  CAS-BOT-BC374419  Sonchus asper Cherie L. Wetzel 1969-7-25 973 Alameda Niles Canyon and Vicinity. Along railroad tracks between Palomares Rd. and the Kaiser Plant abutting Swizzig's property Comment
  CAS-BOT-BC374420  Sonchus asper Volney Rattan 1877-4-1 s.n. Alameda Shell Mound, Oakland Comment
  CAS-BOT-BC374421  Sonchus asper E. M. Zeile 1920-4-17 1000 Alameda Berkeley Comment
  CAS-BOT-BC374422  Sonchus asper Ernest C. Twisselmann 1969-9-10 16039 Fresno Shaver Lake road, 1.5 mile above Pine Ridge 1219 Comment
  CAS-BOT-BC374423  Sonchus asper Ynez Whilton Winblad 1937-4-8 s.n. Fresno Little Panoche Comment
  CAS-BOT-BC374425  Sonchus asper F. A. MacF. 1934-6-22 13743 Humboldt Arcata, North coast of California Comment
  CAS-BOT-BC374426  Sonchus asper Joseph P. Tracy 1936-8-24 15177 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  CAS-BOT-BC374427  Sonchus asper Joseph P. Tracy 1932-6-4 10132 Humboldt Bridgeville 198 Comment
  CAS-BOT-BC374428  Sonchus asper Joseph P. Tracy 1932-5-22 10115 Humboldt North Coast Ranges. South Fork of Eel River, between Miranda and Redway 91 Comment
  CAS-BOT-BC374429  Sonchus asper Huron H. Smith 1911-1-1 3785 Humboldt Unspecified Comment
  CAS-BOT-BC374430  Sonchus asper Ernest C. Twisselmann 1964-9-29 10261 Kern San Joaquin Valley, Kern National Wildlife Refuge 76 Comment
  CAS-BOT-BC374431  Sonchus asper Ernest C. Twisselmann 1965-3-17 10476 Kern San Joaquin Valley, Kern National Wildlife Refuge. Canal on the southwest border of the Refuge 68 Comment
  CAS-BOT-BC374432  Sonchus asper Ernest C. Twisselmann 1964-9-29 10261 Kern San Joaquin Valley, Kern National Wildlife Refuge 76 Comment
  CAS-BOT-BC374433  Sonchus asper Ernest C. Twisselmann 1965-3-17 10476 Kern San Joaquin Valley, Kern National Wildlife Refuge. Canal on the southwest border of the Refuge 68 Comment
  CAS-BOT-BC374434  Sonchus asper Ernest C. Twisselmann 1964-7-17 9749 Kern Tehachapi Mountains. Southeast end of Castaic Lake 1059 Comment
  CAS-BOT-BC374435  Sonchus asper Ernest C. Twisselmann 1964-7-17 9749 Kern Tehachapi Mountains. Southeast end of Castaic Lake 1059 Comment
  CAS-BOT-BC374436  Sonchus asper Ernest C. Twisselmann 1964-5-26 9534 Kern Tehachapi Mountains. Caliente Canyon 822 Comment
  CAS-BOT-BC374438  Sonchus asper Ernest C. Twisselmann 1965-6-24 11093 Kern Tehachapi Mountains. Castaic Lake, Tejon Ranch 1051 Comment
  CAS-BOT-BC374440  Sonchus asper Ernest C. Twisselmann 1958-11-1 4890 Kern Temblor Range and the Western San Joaquin Valley. Buena Vista Slough, 3.6 miles west of Buttonwillow 80 Comment
  CAS-BOT-BC374444  Sonchus asper Ernest C. Twisselmann 1953-9-4 733 Kern Temblor Range and the Western San Joaquin Valley. Carneros Creek at Carneros Rocks Comment
  CAS-BOT-BC374445  Sonchus asper John Thomas Howell 1962-9-22 38762 Kern Kern Co. Park, Greenhorn Mountains 1828 Comment
  CAS-BOT-BC374446  Sonchus asper John Thomas Howell 1962-9-22 38763 Kern Kern Co. Park, Greenhorn Mountains 1828 Comment
  CAS-BOT-BC374447  Sonchus asper Dr. B. W. Evermann 1914-10-1 s.n. Kern Buttonwillow Comment
  CAS-BOT-BC374449  Sonchus asper John Thomas Howell 1966-4-6 41473 Marin John Thomas Howell Botanical Garden, Tiburon Comment
  CAS-BOT-BC374450  Sonchus asper John Thomas Howell 1939-4-23 s.n. Marin Blithedale Canyon, Mt. Tamalpais Comment
  CAS-BOT-BC374451  Sonchus asper Jas. McMurphy 1903-6-1 378 Mendocino Kaisen District Comment
  CAS-BOT-BC374452  Sonchus asper Gordon H. True 1968-6-4 4291 Mendocino 2 miles north of Point Arena between Coast Highway and beach 15 Comment
  CAS-BOT-BC374453  Sonchus asper Gladys L. Smith 1981-5-27 6458 Mendocino About Round Pond, at summit of Eden Valley Ranch road 1219 Comment
  CAS-BOT-BC374454  Sonchus asper Gladys L. Smith; Charles H. Smith 1983-6-23 7917 Mendocino At side of Valley Road, ca. 1.6 km. E/ Willits Comment
  CAS-BOT-BC374455  Sonchus asper Cook & Cook 1947-4-26 676 Monterey Robertson Creek, Frances Simes Hastings Natural History Reservation, Santa Lucia Mts. Comment
  CAS-BOT-BC374461  Sonchus asper Beatrice F. Howitt 1962-5-13 1298 Monterey Santa Lucia Mountains. By side of old Los Laureles [Laurelles] road to Salinas, east facing bank Comment
  CAS-BOT-BC374467  Sonchus asper John Thomas Howell 1956-7-3 31673 San Francisco Nursery, Golden Gate Park, San Francisco Comment
  CAS-BOT-BC374468  Sonchus asper John Thomas Howell 1957-10-11 32995 San Francisco San Francisco. Ground near academy, Golden Gate Park Comment
  CAS-BOT-BC374469  Sonchus asper Peter Rubtzoff 1956-4-29 2367 San Francisco San Francisco. San Miguel Hills. Bottom of canyon east of O'Shaughnessy Blvd. Comment
  CAS-BOT-BC374470  Sonchus asper Peter Rubtzoff 1956-11-14 3077 San Francisco San Francisco. South of Stanley Drive, east of Lake Merced Comment
  CAS-BOT-BC374471  Sonchus asper Peter Rubtzoff 1957-9-15 3553 San Francisco San Francisco. Flat behind the beach near Lands End Comment
  CAS-BOT-BC374472  Sonchus asper Malcolm Coulter 1968-4-15 s.n. San Francisco Farallon Islands Comment
  CAS-BOT-BC374473  Sonchus asper Malcolm Coulter 1968-4-15 s.n. San Francisco Farallon Islands Comment
  CAS-BOT-BC374474  Sonchus asper Volney Rattan 1877-1-1 s.n. San Francisco Mission Hills, San Francisco Comment
  CAS-BOT-BC374475  Sonchus asper Peter H. Raven 1950-5-25 2144 San Francisco California St. between Laguna St. and Octavia St., San Francisco 91 Comment
  CAS-BOT-BC374476  Sonchus asper R. F. Hoover 1964-5-15 8900 San Luis Obispo Field on coast south of San Carpoforo Creek Comment
  CAS-BOT-BC374478  Sonchus asper Ernest C. Twisselmann 1954-5-12 1218 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Hills at Palo Prieta Summit, 9 miles south of Cholame 670 Comment
  CAS-BOT-BC374481  Sonchus asper Ernest C. Twisselmann 1969-11-28 16354 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Loffaly Spring, hills at the head of Palo Prieta Canyon 640 Comment
  CAS-BOT-BC374482  Sonchus asper Ernest C. Twisselmann 1969-11-28 16354 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Loffaly Spring, hills at the head of Palo Prieta Canyon 640 Comment
  CAS-BOT-BC374483  Sonchus asper Clare B. Hardham 1957-6-15 2277 San Luis Obispo Santa Lucia Mountains. Villa Creek Comment
  CAS-BOT-BC374484  Sonchus asper Clare B. Hardham 1957-7-15 2465 San Luis Obispo Santa Lucia Mountains. Graves Creek, Del Rio Road Comment
  CAS-BOT-BC374485  Sonchus asper Clare B. Hardham 1957-5-12 1916 San Luis Obispo Santa Lucia Mountains. Trail to Green's Lake Comment
  CAS-BOT-BC374486  Sonchus asper J. T. Howell 1961-4-14 36501 San Luis Obispo Santa Lucia Mountains. Cambria Comment
  CAS-BOT-BC374488  Sonchus asper T. Winfield 1974-8-28 1178 San Luis Obispo Near Morro Bay, PG&E power plant Comment
  CAS-BOT-BC374492  Sonchus asper John H. Thomas 1971-5-2 15869 B San Mateo Near intersection of Canada Road and Edgewater Road, about three miles westward from Redwood City 152 Comment
  CAS-BOT-BC374493  Sonchus asper John H. Thomas 1963-5-20 10105 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  CAS-BOT-BC374497  Sonchus asper Daniel Cohen 1953-5-9 75 San Mateo Top of sea cliff at Pescadero Comment
  CAS-BOT-BC374499  Sonchus asper L. R. Abrams; I. L. Wiggins 1930-4-1 s.n. Santa Barbara Santa Cruz Island. Vicinity of Pelican Bay Comment
  CAS-BOT-BC374500  Sonchus asper L. R. Abrams; I. L. Wiggins 1931-6-30 261 Santa Barbara Santa Rosa Island. Vicinity of Bletcher's Bay Comment
  CAS-BOT-BC374501  Sonchus asper E. R. Blakley 1959-4-26 2795 Ventura Edge of the water catchment area near the center of the island. East Anacapa Island 60 Comment
  CAS-BOT-BC374502  Sonchus asper Ralph Hoffmann 1930-7-15 s.n. Santa Barbara Smuggler's Cove, Santa Cruz Island Comment
  CAS-BOT-BC374503  Sonchus asper Henry M. Pollard 1957-10-28 s.n. Santa Barbara Shoreline of Lake Cachuma, Santa Ynez Valley Comment
  CAS-BOT-BC374504  Sonchus asper Martin A. Piehl 1962-5-15 62146 Santa Barbara California Channel Islands. Canyon del Puerto, ca. .5 mi. from Stanton ranch hdqrs. Santa Cruz Island 45 Comment
  CAS-BOT-BC374507  Sonchus asper John H. Thomas 1958-8-16 7397 Santa Clara Stanford University Campus. In Memorial Court Comment
  CAS-BOT-BC374508  Sonchus asper John H. Thomas 1961-6-28 9575 Santa Clara Stanford University Campus. Near Branner Hall Comment
  CAS-BOT-BC374509  Sonchus asper John H. Thomas 1958-8-16 7433 Santa Clara Stanford University Campus. In front of Encina Hall Comment
  CAS-BOT-BC374510  Sonchus asper J. H. Thomas 1955-5-3 4925 Santa Clara Stanford University Campus. Roadside between Palm Drive and Stanford Museum Comment
  CAS-BOT-BC374511  Sonchus asper J. H. Thomas 1964-10-18 10518 Santa Clara 838 Cedro Way, Stanford Comment
  CAS-BOT-BC374512  Sonchus asper Robert Martineau 1974-5-12 209 Santa Clara Foothills Park, City of Palo Alto. Foothills of the eastern side of the Santa Cruz Mountains. Five miles south of center of Palo Alto. Los Trancos Trail 548 Comment
  CAS-BOT-BC374513  Sonchus asper Robert Martineau 1974-5-4 137 Santa Clara Foothills Park, City of Palo Alto. Foothills of the eastern side of the Santa Cruz Mountains. Five miles south of center of Palo Alto. North of Park Entrance 548 Comment
  CAS-BOT-BC374514  Sonchus asper Robert Martineau 1974-5-12 163 Santa Clara Foothills Park, City of Palo Alto. Foothills of the eastern side of the Santa Cruz Mountains. Five miles south of center of Palo Alto. Firebreak at Page Mill Road 548 Comment
  CAS-BOT-BC374515  Sonchus asper W. R. Dudley 1896-12-10 s.n. Santa Clara Santa Cruz Mountain Peninsula. Roble Hall Garden, Stanford University Comment
  CAS-BOT-BC374520  Sonchus asper W. H. Rich 1912-5-1 s.n. Santa Cruz Santa Cruz Peninsula. Swanton Comment
  CAS-BOT-BC374521  Sonchus asper R. E. Frenkel 1964-7-13 674 Siskiyou Near Mt. Shasta on an east shoulder of Everitt Memorial Highway 1280 Comment
  CAS-BOT-BC374524  Sonchus asper W. B. Cooke; V. G. Cooke 1961-7-17 32626 Siskiyou Along logging road near Howard, Mt. Shasta Comment
  CAS-BOT-BC374525  Sonchus asper G. DeNevers 1981-4-25 813 Sonoma Pepperwood Ranch. Garrison Canyon Comment
  CAS-BOT-BC374526  Sonchus asper John Thomas Howell 1932-9-18 10776 Sonoma Kenwood Marsh Comment
  CAS-BOT-BC374527  Sonchus asper John H. Thomas 1976-6-15 18326 Sonoma Southern end of Sea Ranch, northwestern part of county, about 7 miles south of Gualala 30 Comment
  CAS-BOT-BC374528  Sonchus asper Peter Rubtzoff 1951-7-21 517 Sonoma Pitkin Marsh, near Forestville. Area between the Upper and the Lower marshes Comment
  CAS-BOT-BC374529  Sonchus asper Peter Rubtzoff 1951-7-21 517 Sonoma Pitkin Marsh, near Forestville. Area between the Upper and the Lower marshes Comment
  CAS-BOT-BC374531  Sonchus asper Peter Rubtzoff 1951-7-7 359 Sonoma Western branch of the Upper Marsh. Pitkin Marsh, near Forestville Comment
  CAS-BOT-BC374532  Sonchus asper Clare R. Wheeler 1982-1-8 2871 Mendocino Mendocino City. Surfwood Drive. Sholars Farm 60 Comment
  CAS-BOT-BC374535  Sonchus asper Ernest C. Twisselmann 1971-6-20 17764 Tulare Limestone Cliffs, Kern Canyon 1143 Comment
  CAS-BOT-BC374537  Sonchus asper Ernest C. Twisselmann 1969-10-1 16178 Tulare Sierra Nevada, Kern Plateau. Slope northwest of Whistle Creek (above Poison Meadow) 2407 Comment
  CAS-BOT-BC374538  Sonchus asper Ernest C. Twisselmann 1959-7-8 5502 Tulare Kern Plateau: Cherry Hill Road at Brush Creek 1737 Comment
  CAS-BOT-BC374539  Sonchus asper Ernest C. Twisselmann 1967-6-27 13501 Tulare Sierra Nevada, Kern Plateau. South Fork of Kern River at the north end of Kennedy Meadows 1889 Comment
  CAS-BOT-BC374540  Sonchus asper Ernest C. Twisselmann 1956-6-8 2914 Tulare Temblor Range and the Western San Joaquin Valley. Tulare Lake Bed, about 5 miles north of South Lake Farms 57 Comment
  CAS-BOT-BC374541  Sonchus asper Ernest C. Twisselmann; Eben McMillan; Liberto R. Nathan; Robert Burkhart 1971-8-31 18269 Tulare Sierra Nevada, Kern Plateau. Soda Flat 1670 Comment
  CAS-BOT-BC374542  Sonchus asper Ernest C. Twisselmann; Eben McMillan; Liberto R. Nathan; Robert Burkhart 1971-8-31 18260 Tulare Sierra Nevada, Kern Plateau. Nine Mile Creek at Kern River 1591 Comment
  CAS-BOT-BC374543  Sonchus asper John Thomas Howell 1967-11-3 44029 Tulare About 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC374544  Sonchus asper John Thomas Howell 1951-7-22 28150 Tulare Tranger Creek, Sequoia Park, on road to Mineral King 1371 Comment
  CAS-BOT-BC374545  Sonchus asper John Thomas Howell; Gordon H. True 1969-10-1 46408 Tulare 1 mile south of Snake Creek on Poison Meadow to Brush Creek Overlook road, Kern Plateau 2438 Comment
  CAS-BOT-BC374546  Sonchus asper John Thomas Howell; Gordon H. True 1968-5-12 44235 Tulare Brush Creek Canyon, Kern Plateau 1402 Comment
  CAS-BOT-BC374548  Sonchus asper Elizabeth McClintock 1967-5-20 s.n. Tulare Pixley Natural Area, about 5 miles east northeast of Pixley Comment
  CAS-BOT-BC374549  Sonchus asper Steve Boyd; Dave Bramlet 1986-6-9 1886 Tulare Southern Sierra Nevada Mtns - Chimney Creek Canyon, side cyn south of peak 7155, south of Chimney Meadow 1737 Comment
  CAS-BOT-BC374550  Sonchus asper David D. Keck 1931-6-10 1208 Tuolumne Mather 1400 Comment
  CAS-BOT-BC374554  Sonchus asper Mrs. W. J. Williamson 1919-5-24 177 Tuolumne Spring Gulch near Bear Creek 320 Comment
  CAS-BOT-BC374555  Sonchus asper Mrs. W. J. Williamson 1919-5-24 177 Tuolumne Spring Gulch near Bear Creek 320 Comment
  CDA35525  Sonchus asper K. O Day 1989-3-29 s.n. Santa Clara Near Mine Hill Road, New Almaden Park. 0 Comment
  CDA39079  Sonchus asper H. Scheck & K. Caterino 2013-6-4 PDR# 1451017 Santa Barbara Lompoc, on Santa Rosa Road, 3 miles east of Hwy 1. 0 Comment
  CDA7702  Sonchus asper T. C. Fuller 1966-6-2 14865 Mendocino Between Orr s Springs and Montgomery Creek, northwest of Ukiah. 0 Comment
  HSC26294  Sonchus asper T. O. Osborne 1970-5-17 90 Del Norte 2.25 mi. W and 1.25 mi. N of Battery Point Light, Castle Island. Comment
  HSC26456  Sonchus asper T. O. Osborne 1970-6-17 127 Del Norte Prince Island, 3/8 mi. W Sinestia Rock. Comment
  HSC43414  Sonchus asper R. Sutherland 1978-2-18 3 .18278 Humboldt S side mouth of Mattole River 9 Comment
  HSC45079  Sonchus asper R. Sutherland 1976-8-6 2 .6876 Humboldt Briceland 186 Comment
  HSC46408  Sonchus asper M. B. Dunkle 1939-4-2 7209 Los Angeles SE point, San Clemente Island, Comment
  HSC6217  Sonchus asper J. W. Johnson 1962-6-12 1410 Humboldt Arcata; between the foredunes, at foredune 39, Samoa Comment
  HSC6218  Sonchus asper S. R. Johnson 1965-3-15 11 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC64492  Sonchus asper Linda M. Barker 1975-6-26 1043 Del Norte Old Gasquet Toll Road, 0.4 mi. N of Patrick Creek junction 457 Comment
  HSC67039  Sonchus asper J. P. Smith 1971-10-9 5045 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC67881  Sonchus asper J. P. Smith 1973-5-26 6873 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC79453  Sonchus asper Kenneth Clark 1980-4-18 605 Humboldt Along access trail to Deadman's Gulch. 46 Comment
  HSC79494  Sonchus asper Kenneth Clark 1980-3-1 506 Humboldt Deadman's Gulch; lower alluvial terrace 11 Comment
  HSC82635  Sonchus asper Thomas W. Nelson 1979-5-13 4654 Trinity Along Rd. from SR 3 to Deerlick Springs 2 mi. S of Blanchard Flats. 640 Comment
  HSC89522  Sonchus asper M. Roantree 1985-6-10 79 Humboldt W side of Trinidad Head Comment
  IRVC28292  Sonchus asper A. C. Sanders, M. Elvin, C. Burrascano, A. Pigniolo, A. Thompson, et al. 2003-5-4 26546 San Diego Otay Mountain, ridge ca. 2-3 miles east of the peak, around end of jeep trail Peninsular Range 945 Comment
  IRVC28583  Sonchus asper A. C. Sanders, Mark Elvin 2002-6-19 25168 Los Angeles Newhall Ranch, spring 1.5 mi. ESE of Del Valle, SW of Castaic Junction, canyon above bench mark 926, just south of Santa Clara River NE end of Santa Susana Mtns. 305 Comment
  IRVC28657  Sonchus asper A. C. Sanders, Mark A. Elvin 2003-5-15 26728 Ventura old ranch site in upper south fork of Salt Canyon along dirt road to the crest of the range, 1 km west of Los Angeles Co. line, Newhall Ranch Santa Susana Mtns. 610 Comment
  JEPS99094  Sonchus asper Clare B. Hardham 1959-5-12 4516 Monterey 3.7 mi N of San Antonio School Comment
  JEPS99113  Sonchus asper M. B. Dunkle 1939-4-2 7209 Los Angeles San Clemente Island, S. E. point[?] Comment
  OBI15390  Sonchus asper Robert F. Hoover 1964-5-15 8900 San Luis Obispo On coast S of San Carpoforo Crk Comment
  OBI35838  Sonchus asper Allison Berry 1984-2-26 30 San Luis Obispo Camp San Luis Shooting Facility. 6.5 mi N of San Luis Obispo on hwy 1 Comment
  OBI35839  Sonchus asper Allison Berry 1984-4-10 66 San Luis Obispo Camp San Luis Shooting Facility. 6.5 mi N of San Luis Obispo on hwy 1. Behind cement bunker in parcel c Comment
  OBI37465  Sonchus asper G. Helmkamp 1985-5-4 448 San Bernardino Morongo Cyn; SE of Morongo Valley. Along the Mesquite Trl at the old dam 747 Comment
  OBI38069  Sonchus asper David J. Keil, Kathryn Bay and Rich Ferguson 1984-4-28 18154 San Luis Obispo Amer Cyn area in La Panza Mts Comment
  OBI38430  Sonchus asper Eric Wise 1981-6-27 770 San Luis Obispo Cuyama River, Pine cyn forest serv. stn. Comment
  OBI80711  Sonchus asper D. R. Miller 2015-3-5 315 .1109 San Luis Obispo South orchard at Cole Ranch; Marumolejo creek drainage 720 Comment
  PGM2240  Sonchus asper Vern Yadon 1983-6-30 Monterey Diablo Range, Priest Valley Highway 198, 1 mi E of Mustang summit Comment
  PGM5510  Sonchus asper Beatrice F Howitt 1962-5-13 1298 Monterey Sierra de Salinas, Los Laureles Grade, Along road Comment
  PGM5511  Sonchus asper Beatrice F Howitt 1963-10-21 1801 Monterey Santa Lucia Mountains, Carmel River bed, Dixon place near Comment
  POM12307  Sonchus asper F. L. Robinson 1921-6-2 91 Los Angeles Between Claremont and Upland Comment
  POM196193  Sonchus asper E. E. Stanford 1928-4-21 904 Alameda Near Newark Comment
  POM292652  Sonchus asper Arthur L. Cohen 1934-4-15 415 Kern Bakerfield. Bank of Kern River. 122 Comment
  POM294082  Sonchus asper Lyman Benson 1943-8-25 11429 Lake Kelseyville, Middle North Coast Range, Clear Lake Drainage 412 Comment
  POM53034  Sonchus asper C. F. Baker 1895-08 16511 Los Angeles Pomona. Comment
  POM56424  Sonchus asper W. J. Williamson 1919-5-24 177 Tuolumne Spring Gulch near Bear Creek. 320 Comment
  RSA0087922  Sonchus asper Steven A. Junak, Keri Kirkland, Ian Williams 1999-4-15 6505 Santa Barbara San Miguel Island. E end of island, in upper reaches of a fork of Willow Cyn, off E end of airfield (first gully E of airfield). Comment
  RSA151006  Sonchus asper P. H. Raven 1962-4-12 17336 Los Angeles Narrow Canyon south of canyon below Tomb, west side of San Clemente Island 274 Comment
  RSA160434  Sonchus asper J. D. Olmsted 1959-5-10 589 Inyo Argus Mts., Drainage area to Panamint Valley: Above end of road to Darwin Falls. 915 Comment
  RSA177070  Sonchus asper John H. Thomas 1964-10-18 10518 Santa Clara 838 Cedro Way, Stanford. Comment
  RSA296510  Sonchus asper S. Castagnoli, Greg de Nevers, R. Doug Stone 1980-5-18 174 Inyo Beck Canyon, Crystal Spring. 1143 Comment
  RSA318205  Sonchus asper Art Munger, Eugene Field 1960-4-29 9595 Fresno East bank of Lost Lake. Comment
  RSA474074  Sonchus asper Robert Gustafson 1981-3-26 2138 Los Angeles Ballona Wetlands, Area 1. Comment
  RSA474079  Sonchus asper Howard Mullins 1931-3-6 s.n. Los Angeles City lot Comment
  RSA515489  Sonchus asper Steve Boyd, David E. Bramlet 1986-6-9 1886 Tulare Chimney Creek Canyon, side canyon south of peak 7155, south of Chimney Meadow. 1738 Comment
  RSA517629  Sonchus asper Alan Romspert 1978-7-5 270 Inyo S. Fork Hanaupah Cyn. Panamint Mts. in stream. 1067 Comment
  RSA526562  Sonchus asper Steve Boyd, Timothy S. Ross, Laurel Arnseth 1990-4-7 4247 Los Angeles San Clemente Island, lower half of China Cyn, S end of Island, W side. Comment
  RSA526627  Sonchus asper Steve Boyd, Laurel Arnseth 1990-4-7 4197 Los Angeles San Clemente Island, lower half of China Cyn, S end of Island, W side. Comment
  RSA585714  Sonchus asper M. D. Proctor, E. A. Young 1993-4-11 ROB 0363 San Luis Obispo Sulphur Spring Road in middle of Area R. Comment
  RSA609556  Sonchus asper M. A. Piehl 1962-5-15 62146 Santa Barbara Santa Cruz Island. Canyon del Puerto, ca [?] mi. from Stanton ranch hdqrs. 46 Comment
  RSA609981  Sonchus asper L. C. Wheeler 1970-6-27 s.n. Los Angeles San Gabriel Mountains: Little Fish Fork, Fish Fork Camp. 2012 Comment
  RSA623687  Sonchus asper Mary DeDecker 1967-4-9 1691 Inyo Saline Valley: Vega Camp 482 Comment
  RSA644400  Sonchus asper E. R. Blakley 1963-5-9 5769 Ventura Anacapa Islands. Junction of Cherry Canyon, 1/4 way toward its mouth, northwest of Triangulation Point Camel. 76 Comment
  RSA651065  Sonchus asper Virginia Guthrie 1983-5-7 22 San Diego In University City on the southwest corner of Genesee Ave. and La Jolla Village Dr. Comment
  RSA659253  Sonchus asper M. Duke, Christy Hightower, C. McElroy 1982-5-15 5 Riverside CA Hwy 74, just off highway E of Elsinore, 1 mi W of Hwy 15. Comment
  RSA680137  Sonchus asper Sarah J. De Groot 2003-2-16 1006 San Diego Hidden Meadows: Cerveza Dr. Comment
  RSA947  Sonchus asper J. T. Howell 1928-4-7 903 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  RSA95049  Sonchus asper F. W. Peirson 1932-7-6 10249 Mendocino Navarro River. Dimmick Memorial Park. Comment
  RSA95050  Sonchus asper F. W. Peirson 1924-6-25 4857 San Diego Top of ridge east of Laguna Lakes, Laguna Mountains. Comment
  RSA95051  Sonchus asper F. W. Peirson 1923-3-18 1487 San Bernardino Along ditch south of Chino. Comment
  RSA98475  Sonchus asper Chas. H. Quibell 1953-5-22 2020 Fresno Annadale Ave. E of Sanger, W edge of Kings River bottoms, in large fence inset, N side road between Salix nigra to W and great Typha border to main meadow to E. Comment
  SD245291  Sonchus asper Robert Thorne, E. W. Lathrop, W. Wisura 1977-7-8 49582 Orange Santa Ana Mountains: San Juan Canyon at Lower Picnic Camp, just below Ortega Highway (74) Comment
  SEINET10474008  Sonchus asper Lowell Ahart 1984-5-21 Ahart 4615 Sutter At the old homestead on the south side of South Butte, Sutter Buttes, west of Marysville; Foothill Woodland; 400 m. 400 Comment
  SEINET10474011  Sonchus asper Mary Susan Taylor 1982-9-13 Taylor 5136 A Plumas T23N R14E se/ne sec 27. Portola quad. Ramelli Ranch, in vicinity of Calpine Rd bridge (109) over Feather River, on s side of the river, ca. 1 mi w of Beckwourth. 4880 ft. 1487 Comment
  SEINET10872161  Sonchus asper Mary Susan Taylor 1982-12-26 Taylor 5210 Merced In disturbed soil around edge of Rest Stop, e side of Interstate 5, on Merced-Stanislaus Co border, ca. 15 mi sw of Merced. Comment
  SEINET10938100  Sonchus asper Mary Susan Taylor 1981-5-15 Taylor 3736 Butte T22N R5E nw/nw sec 5, Pulga SW quad. SE side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi N of Pulga bridge. l500 ft. 457 Comment
  SEINET11800343  Sonchus asper L. K. Henry 1971-1 s.n. Del Norte 3 mi N of Klanath River Junction Comment
  SEINET11804241  Sonchus asper C. V. Braun 1976-1 189 Kern San Joaquin Valley, 6-8 mi NW of Wasco Comment
  SEINET11807869  Sonchus asper Unknown 1982-1 789 Tehama TNC Vina Plains Preserve, where irrigation ditch crosses under Hwy 99, 0.5 km S of Lassen Rd 60 Comment
  SEINET11807909  Sonchus asper W. Knight, Knight, I. 1988-1 6219 Contra Costa Suisun Marsh Comment
  SEINET4016299  Sonchus asper M. B. Dunkle 1939-1 8396 Santa Barbara Cuyler Harbor, San Miguel Island. Comment
  SFV4118  Sonchus asper H. M. Pollard 1963-6-2 s. n. Santa Barbara Between Southern Pacific Railroad and beach, about 1 mile west of Ventura River estuary. Comment
  UC111201  Sonchus asper H. M. Hall and H. P. Chandler 1906-5-10 6913 Inyo Panamint Mts. Comment
  UC1215152  Sonchus asper Peter H. Raven 1962-4-12 17336 Los Angeles narrow canyon s of canyon below the Tomb (w side San Clemente Island); w side San Clemente Island 274 Comment
  UC280163  Sonchus asper W. C. Morgan Fresno Kingsburg Comment
  UC557675  Sonchus asper Nell Murbarger May 1936 228 Los Angeles e side San Clemente Island (near ocean) Comment
  UC557676  Sonchus asper Nell Murbarger 1936-3-1 78 Los Angeles slopes e side San Clemente Island Comment
  UC691791  Sonchus asper Mary L. Bowerman 1938-5-28 3642 Contra Costa North Road 6.5 mi from North Gate (Mount Diablo on bank by roadside (where Boulevard Spring used to be)); Mount Diablo Comment
  UCD128693  Sonchus asper Bryan Drew 2003-8-3 s.n. Fresno Sierra National Forest, Teakettle Experimental Forest. UC3. Comment
  UCD35252  Sonchus asper Beecher Crampton 1954-10-19 2294 Solano Solano County, 0.5 miles south of Suisun, Suisun Marsh. Comment
  UCSB22864  Sonchus asper Chandler, E. 1966-2-4 Santa Barbara South of Carpinteria and toward the ocean from Route 101 Comment
  UCSB30587  Sonchus asper Edwards, David 1974-8-12 Humboldt North side of 7th St. just W. of its overpass of U.S. 101, Arcata 18 Comment
  UCSB38564  Sonchus asper Lampl, Diane 1981-5-30 Santa Barbara Southeast area of Cachuma Lake, where dirt road forks, 1/4 mile West of the end of the paved highway and 1/4 mile North of Highway 154 228 Comment
  UCSB42441  Sonchus asper Pierce, Lars 1982-5-4 Santa Barbara West of airport, Goleta Slough 5 Comment
  UCSB43328  Sonchus asper Murphey, Tom 1982-3-12 Santa Barbara On south side of bike path between UCSB campus and Santa Barbara, 0.25 mile west of Goleta Beach Park entrance 4 Comment
  UCSB48147  Sonchus asper Hobbs, E. 1978-5-20 Santa Barbara Eastern pine forest; Santa Cruz Island Comment
  UCSC009434  Sonchus asper Unknown 2014-4-27 759 Monterey Ft. Ord National Monument (Region H5, Trail 59) Comment
  CAS-BOT-BC229756  Sonchus asper subsp. asper T. Gosliner; B. Gosliner; J. Charles; et al. 2012-6-23 1909 Marin Marin Municipal Water District Lands: Mount Tamalpais. Rock Spring area, past meadow, following drainage to NE: spot near drainage/serpentine/forest Comment
  CAS-BOT-BC54291  Sonchus asper subsp. asper Bruce Bartholomew 1994-5-28 6710 Modoc 8.5 km E of Likely on road to Jess Valley along the S Fork of the Pit River. 1620 Comment
  CAS-BOT-BC54292  Sonchus asper subsp. asper Bruce Bartholomew 1994-5-28 6710 Modoc 8.5 km E of Likely on road to Jess Valley along the S Fork of the Pit River. 1620 Comment
  CATA1452  Sonchus asper subsp. asper Mark L. Hoefs, Robert F. Thorne 1996-4-6 2634 Los Angeles Santa Catalina Island: End of Renton Mine Road 268 Comment
  CATA1664  Sonchus asper subsp. asper Mark L. Hoefs, Steven A. Junak, Keri Kirkland, Lisa Stratton 1998-7-16 2953 Los Angeles Santa Catalina Island: Above Parson's Beach 85 Comment
  CDA30461  Sonchus asper subsp. asper G. F. Hrusa 2009-5-9 17822 Santa Barbara Sierra Madre Mountains; San Rafael Wilderness. Sisquoc River. Riparian zone and floodwash, +/- 1/4 mi. E of Cliff Camp. 533 Comment
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CDA37005  Sonchus asper subsp. asper G. F. Hrusa, C. & E. Dogwin, R. Jensen 2012-5-15 18470 Monterey Santa Lucia Mountains; Ridge on N side of Alder Cyn, approx. 3 mi. S of Gorda on Gorda Mtn. 414 Comment
  CDA7845  Sonchus asper subsp. asper Erik Smith 2008-4-7 PDR# 1505884 Madera Chowchilla, Triangle T Ranch, 4408 Hays Dr 0 Comment
  CHSC101101  Sonchus asper subsp. asper L. P. Janeway 2009-3-30 9692 Sutter Sacramento Valley. At the pumphouse on the eastern edge of the east levee of Sutter Bypass, between Franklin Road and Wadsworth Canal; about 4.7 km south-southwest of the town of Sutter. Open disturbed compacted ground along access road to the pumphouse and top of adjacent drainage canal. 11 Comment
  CHSC101816  Sonchus asper subsp. asper Lowell Ahart 2009-6-12 15838 Butte 5 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC102297  Sonchus asper subsp. asper Lowell Ahart 2009-10-12 16429 Napa Below the high water line of Lake Berryessa, along Capell Creek east of Rest Area, 3/4 mile northeast of Highway 128 on Berryessa Knoxville Road, 3/4 mile southwest of Capell Cove Launch Ramp on Berryessa Knoxville Road, about 19 miles (air) west of Winters. 437 Comment
  CHSC107169  Sonchus asper subsp. asper L. P. Janeway 2011-7-5 10491 Yuba Northern High Sierra Nevada. Plumas National Forest; 2.2 air km east of Dobbins, 360 m northeast of Marysville Road. Small grassy meadow. Plants occasional, especially in disturbed edges of the meadow. 750 Comment
  CHSC107248  Sonchus asper subsp. asper Lowell Ahart 2011-6-3 17359 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Urban. 60 Comment
  CHSC108208  Sonchus asper subsp. asper Lowell Ahart 2011-6-7 17384 Yuba Road margin, about 25 yards south of the huge gravel bar along the Yuba River, about 150 yards west of the south end of Parks Bar Bridge (Highway 20), about 15 miles (by air) northeast of Marysville. 66 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC109152  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC113057  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2013-7-22 18846 Lassen West margin of a duck field, about 50 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC113916  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC116037  Sonchus asper subsp. asper Lowell Ahart 2015-11-19 20678 Yuba 100 yards or more north of the spillway area, below the high water line, west side of Lake Francis, about 1-1/2 miles south of Dobbins. 512 Comment
  CHSC116096  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2015-7-13 20304 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117004  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC117296  Sonchus asper subsp. asper Lowell Ahart 2016-7-13 21111 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Aidn, hills at the southern slope of Big Valley. 1289 Comment
  CHSC117361  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2016-7-14 21157 Modoc West side of a new pond, south of Ash Creek Canal (now filled in), south of Ash Creek, Ash Creek State Wildlife Area, 0.79 mile (air) south of County Road 87, 1.73 miles (air) west of Adin, Big Valley. 1273 Comment
  CHSC61461  Sonchus asper subsp. asper Vernon H. Oswald; Lowell Ahart 1993-5-27 5422 Glenn Sacramento National Wildlife Refuge. Refuge located ca. 7 mi S of Willows, along Norman Rd/ at the road into the Checking Station (between the SW corner of Pool 4 and the NW corner of Cell 1, Tract 23). In a roadside ditch. 24 Comment
  CHSC64819  Sonchus asper subsp. asper Vernon H. Oswald 1995-6-4 6823 Tehama Dales Lake Ecological Reserve. W side of Manton Rd. (A6) ca. 1.0 mi n of Hwy. 36 at Dales Station, ca. 14 mi ne of Red Bluff. Between Manton Rd. and the reserve fence at the base of the roadfill approaching the double culvert s of Inks Creek Rd. 207 Comment
  CHSC66088  Sonchus asper subsp. asper Vernon H. Oswald; Lowell Ahart 1996-5-27 7642 Tehama Northwest side of Sacramento Valley. Thomes Creek Ecological Reserve. CDFG parcel on the S side of Gyle Rd. NW of Corning. Along the edge of the creek ca. 0.4 mi E of the W boundary of the reserve. 91 Comment
  CHSC80610  Sonchus asper subsp. asper Lowell Ahart 2001-6-16 8874 Tehama On north side of the dirt road, about 4 1/2 miles west of Highway 32, west of Soda Springs Campground, about 5 miles (air) west of Butte Meadows. 1112 Comment
  CHSC84298  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2003-6-11 10237 Tehama On the west edges of Battle Creek, about 1 mile north of Manton Road, about 1 1/2 miles (air) northeast of the Colman Power House, about 5 miles (air) west-southwest of Darah Springs State Fish Hatchery, about 10 miles (air) east-northeast of Cottonwood. 153 Comment
  CHSC87903  Sonchus asper subsp. asper Lowell Ahart 2004-6-11 11042 Tehama On the southwest margin of Dead Rabbit Lake, about 100 yards west of the Nomalaki Trail, about 1 1/2 miles northwest of Bowers Creek, about 2 1/4 miles northwest of Forest Road 23N69 (Mud Flat Road), about 8 miles (air) southwest of Paskenta. 545 Comment
  CHSC91245  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2005-6-10 12117 Siskiyou At the pump house along the Shasta River, about 1.9 miles (air) south of Highway 99/97 Cutoff, about 6 miles (air) east-southeast of Grenada. 776 Comment
  GMDRC1122  Sonchus asper subsp. asper J. Andre 2003-5-25 4085 San Bernardino Granite Mtns: Granite Mtns: Mouth of Budweiser Cyn, growing in wet sandy soil in streambed.. Elev. 3788 ft. 1155 Comment
  GMDRC4412  Sonchus asper subsp. asper J. Andre 2010-6-4 13898 San Bernardino Mid Hills: Mojave National Preserve; northern Pinto Valley at Howe Spring, 0.7 mi. north of Bathtub Spring, approx. 2.5 mi. west of 4th of July Cyn (NY Mtns). 1741 Comment
  JEPS104138  Sonchus asper subsp. asper Lowell Ahart 2003-6-11 10237 Tehama On the w edges of Battle Creek, ca 1 mi n of Manton Rd, ca 1 1/2 mi (air) ne of the Colman Power House, ca 5 mi (air) wsw of Darah Springs State Fish Hatchery, ca 10 mi (air) ene of Cottonwood. 153 Comment
  JEPS106293  Sonchus asper subsp. asper Lowell Ahart 2004-6-11 11042 Tehama On the southwest margin of Dead Rabbit Lake, about 100 yards west of the Nomalaki Trail, about 1 1/2 miles northwest of Bowers Creek, about 2 1/4 miles northwest of Forest Road 23N69 (Mud Flat Road), about 8 miles (air) southwest of Paskenta 545 Comment
  JEPS115371  Sonchus asper subsp. asper Lowell Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  JEPS118680  Sonchus asper subsp. asper L. P. Janeway 2011-7-5 10491 Yuba Northern High Sierra Nevada. Plumas National Forest; 2.2 air km east of Dobbins, 360 m northeast of Marysville Road. French Corral 7.5' quad. Comment
  JEPS118736  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Oroville 7.5' quad. Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  JEPS121127  Sonchus asper subsp. asper Lowell Ahart, John Dittes, Josephine Guardino 2013-4-26 18603 Mendocino 1.1 air miles SSE of Anchor Bay, 2.0 air miles NW of mouth of Gualala River. Comment
  JEPS122118  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  JEPS124384  Sonchus asper subsp. asper Lowell Ahart, John Dittes 2015-7-13 20304 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127027  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  JEPS127094  Sonchus asper subsp. asper Lowell Ahart, Josephine Guardino 2016-4-19 20769 Contra Costa 1.4 miles (air) northwest of Los Vaqueros Reservoir Marina, 1.9 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Spring USGS 7.5' Quad. Comment
  JEPS128402  Sonchus asper subsp. asper Adam C. Schneider 2013-5-17 135 San Mateo Crystal Springs Reservoir. Comment
  JOTR32266  Sonchus asper subsp. asper La Doux, Tasha, M. Harding, T. Herskovits, M. Wheeler 2011-6-9 2417 San Bernardino Joshua Tree National Park. Queen Mountains, Rattlesnake Canyon above Indian Cove campground; Bouldery wash with steep granite walls, water barely flowing but still lots of deep pools (Stop 2) 950 Comment
  JOTR32393  Sonchus asper subsp. asper La Doux, Tasha, M. Harding, T. Herskovits, B. Truesdell, M. Wheeler 2011-6-16 2497 Riverside Joshua Tree National Park. Queen Mountains; West side of Barker Dam; Small riparian zone in and along drainage from dam (Stop 5) 1300 Comment
  JOTR32577  Sonchus asper subsp. asper La Doux, Tasha, M. Wheeler, T. Herskovits, D. Shade, B. Truesdell 2011-5-26 2646 San Bernardino Joshua Tree National Park. Quail Mountain, approx. 1.2mi N of peak; spring/seep in north flowing drainage (Stop 4) 1246 Comment
  JOTR32578  Sonchus asper subsp. asper La Doux, Tasha, M. Wheeler, T. Herskovits, D. Shade, B. Truesdell 2011-5-26 2646 San Bernardino Joshua Tree National Park. Quail Mountain, approx. 1.2mi N of peak; spring/seep in north flowing drainage (Stop 4) 1246 Comment
  JOTR35489  Sonchus asper subsp. asper La Doux, Tasha, D. Shade, S. De Groot, N. Fraga, L. Washburn 2013-4-26 3177 Riverside Joshua Tree National Park. Little San Bernardino Mtns, Upper Smithwater Canyon, NW of Quail Mtn. (Biodiversity Hunt stop2) 1295 Comment
  JOTR37031  Sonchus asper subsp. asper Hodges, Stephen R, James Heintz, Aliya Ingersoll, Evan Heck 2015-10-22 520 San Bernardino Wonderland of Rocks - Stop 2 Comment
  JROH1255  Sonchus asper subsp. asper John H. Thomas 1967-5-31 12927 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1257  Sonchus asper subsp. asper John H. Thomas 1974-8-11 17507 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  OBI51265  Sonchus asper subsp. asper Debora Guillot, Jan Barber, Jim Kilber, Sue Weis, Andrew Stackhouse 1993-6-24 1 .23 San Luis Obispo NE corner of San Simeon State park Comment
  OBI54625  Sonchus asper subsp. asper David J. Keil, with Lynne Dee Oyler 1995-3-4 24557 Santa Barbara North base. along beach blvd. west of railroad tracks. Comment
  OBI55560  Sonchus asper subsp. asper George Butterworth 1998-5-3 254 San Luis Obispo Carrizo Plain Natural Area. .2 mi W of ring gate (Windmill Rd) 150 yds below dam. T31S, R19E, S23, SE Qtr 631 Comment
  OBI60171  Sonchus asper subsp. asper David J. Keil, with Lynne Dee (Oyler) Althouse 1999-4-15 28244 Santa Barbara University of California's Sedgwick Ranch Preserve near Figueroa Mountain. Comment
  OBI72251  Sonchus asper subsp. asper Anthony Baniaga, Theo Fitanides 2010-3-27 72 San Luis Obispo Tierra Redonda Mtn BLM ACEC 340 Comment
  RSA0013038  Sonchus asper subsp. asper LeRoy Gross, Caitlin Elam 2013-5-14 6053 Riverside Garner cattle company (Garner ranch), east of Lake Hemet, and highway 74. West of the ranch's buildings. North of the road to the buildings, and south of the old landing strip. 1332 Comment
  RSA0039482  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, G. Kenney 2014-4-30 28066 San Diego Camp Pendleton: State Park Lease area: northwestern portion of Base; along the west side of Cristianitos Road approx. 1 mile north of the entrance to the Base & east of Cristianitos Creek. 50 Comment
  RSA0060263  Sonchus asper subsp. asper LeRoy Gross, Duncan S. Bell, Nick J. Jensen 2015-3-17 6744 Ventura Ormond Beach at end of McWane Blvd., west of Arcturus Ave. South of Port Hueneme, Oxnard. 3 Comment
  RSA0061057  Sonchus asper subsp. asper LeRoy Gross 2006-6-8 2489 Kern Scodie Mountains: Kiavah Wilderness in the Sequoia National Forest; Upper reaches of Cane Canyon. West from Horse Canyon Saddle. (Near 35.58224N, 118.12341W) From the trail to Willow Springs from Horse Canyon Saddle., Area called Lower Yellow Jacket Springs. Collected at the springs 1789 Comment
  RSA0061178  Sonchus asper subsp. asper Nick Jensen, Onkar Singh, Katie Gallagher, Tim Thomas 2014-5-3 1299 Kern Tejon Ranch. Meadow east of the National Cement Plant and south of the Contour Road. 1026 Comment
  RSA0074555  Sonchus asper subsp. asper Erika M. Gardner, Katie Roland 2014-6-13 1072 Kern Sage Canyon, about 0.50 miles north of established primitive campsite, near fork in the canyon. 1503 Comment
  RSA0107298  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, G. Kenney, Patrick McConnell 2016-4-8 31409 San Diego Camp Pendleton: northern portion of Base; Charlie Training Area: along ridgetop on Talega Road just north of San Mateo Creek. 453 Comment
  RSA233506  Sonchus asper subsp. asper R. F. Thorne, C. W. Tilforth, et al. 1972-6-29 42146 San Bernardino San Gabriel Mountains, San Bernardino National Forest: along Cajon Creek near Cajon Campground in Cajon Canyon 838 Comment
  RSA474081  Sonchus asper subsp. asper Anstruther Davidson 1920-6-1 s.n Los Angeles San Antonio river Canyon 1500 Comment
  RSA474084  Sonchus asper subsp. asper M. B. Dunkle 1933-6-17 3611 Los Angeles San Antonio River Canyon. 915 Comment
  RSA586764  Sonchus asper subsp. asper D. L. Banks, S. D. Boyd 1995-5-17 0462 Riverside NW Palomar Mountains; Cleveland National Forest, Agua Tibia Wilderness Area; N face of Agua Tibia Mtn., E of the Dripping Springs Alcove area W of the Dripping Springs Trail, along the W fork of upper Arroyo Seco. 598 Comment
  RSA587255  Sonchus asper subsp. asper Orlando Mistretta 1994-5-13 1205 Los Angeles San Gabriel Mts; Little Rock Creek; slopes E of creek opposite confluence with Kitter Canyon. 1067 Comment
  RSA600479  Sonchus asper subsp. asper Steve Boyd, Lauren Raz 1997-4-30 9612 Los Angeles Liebre Mountains Region: About the confluence of Bear Canyon and Pine Canyon, between the southern flank of Liebre Mountain and northern flank of Red Rock Mountain, southwest of Gillette Mine 866 Comment
  RSA613454  Sonchus asper subsp. asper D. L. Banks, Victor W. Steinmann 1997-3-13 1438 Riverside NW Palomar Mountains, Agua Tibia Mountains: In the Redhawk Housing Development, north of the Pechanga Indian Reservation. The hills south of the intersection of Marge Place and Tehachapi Pass (south of Redhawk Parkway). 378 Comment
  RSA614117  Sonchus asper subsp. asper D. L. Banks 1997-4-8 1802 San Diego NW Palomar Mountains, Agua Tibia Mountains: Wilderness Gardens Preserve. Approximately 3.4 miles east of Pala south of Hwy. 76 along the San Luis Rey River., Areas along the main trail network from the parking area along the primary driveway within the river bottom to areas of native grasslands on the higher slopes. 162 Comment
  RSA615729  Sonchus asper subsp. asper D. L. Banks 1997-4-8 1867 San Diego NW Palomar Mountains, Agua Tibia Mountains: Wilderness Gardens Preserve. Approximately 3.4 miles east of Pala south of Hwy. 76 along the San Luis Rey River., Areas along the main trail network from the parking area along the primary driveway within the river bottom to areas of native grasslands on the higher slopes. 162 Comment
  RSA653060  Sonchus asper subsp. asper D. House 1994-5-6 94 -34 San Diego Cocklebur Beach, Camp Pendleton, 0.5 mile West on MCTSA Road from Stuart Mesa Road, following the dirt road that is North of the MCTSA compound security fence. Comment
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  RSA700665  Sonchus asper subsp. asper J. P. Rebman, Jeannie Gregory, Jim Rocks 2003-7-15 9376 San Diego Laguna Mountains: Lucky 5 Ranch; southern portion of new acquisition by California State Parks: west side of Sunrise Hwy (S-1) between Cuyamaca Lake and Mount Laguna. 1624 Comment
  RSA711177  Sonchus asper subsp. asper LeRoy Gross, Naomi Fraga, Aydee Virgen, Tim Thibault 2005-4-5 1810 San Diego Cuyamaca-Laguna Mountains region: West, southwest side of Viejas Mountain, at base of mountain. Just off West Boundary Truck Trail, just at the end of Anderson Road. Southwest side of the Cuyamaca Mountains. 795 Comment
  RSA711518  Sonchus asper subsp. asper LeRoy Gross, Naomi Fraga, Aydee Virgen, Tim Thibault 2005-4-5 1784 San Diego Southern end of the Cuyamaca Mountains: Southwest end of Poser Mountain, near base of the mountain. Just a short distance east from Red Oak Road along Old Viejas Grade road. 869 Comment
  RSA715771  Sonchus asper subsp. asper L. Ahart, John Dittes 2005-6-10 12117 Siskiyou At the pump house along the Shasta River, about 1.9 miles (air) S of Hwy 99/97 Cutoff, about 6 miles (air) ESE of Granada. 777 Comment
  RSA720177  Sonchus asper subsp. asper LeRoy Gross 2007-3-13 2600 Los Angeles Southern side of the range. Stough Canyon. From the nature center follow canyon bottom in northwest direction to where a spring of water which is at a junction with a creek from the northeast., Started from 34.21265N, 118.30568W, to 34.21674N, 118.30766W. 441 Comment
  RSA720667  Sonchus asper subsp. asper Naomi Fraga, Samantha Tessel 2002-7-20 148 Kern The Owens Peak Eastern Watershed: Owens Peak Wilderness Area. Short Canyon. 1098 Comment
  RSA741130  Sonchus asper subsp. asper Naomi Fraga, Duncan S. Bell 2008-8-12 2543 San Bernardino Santa Ana River. Between Trailhead to Lost creek and Santa Ana River Trail, near south Fork Campground. 1890 Comment
  RSA755314  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  RSA761593  Sonchus asper subsp. asper LeRoy Gross 2010-5-24 4666 Kern Bitter Creek National Wildlife Refuge; Far west end of the San Emigdio Mountains. Unit # 3. Surveyed the middle drainage north of Pelato Peak., Started by saddle southeast of Pelato near 34.91715N, 119.40225W. Traveled north, east of the peak, then finished at Cerro Noroeste Road, near 34.93626N, 119.40217W. 1113 Comment
  RSA768499  Sonchus asper subsp. asper LeRoy Gross, Jose D. Zuniga 2010-8-17 5292 San Bernardino Sugarloaf Meadow area. Near the base of the southwest side of Sugarloaf Mountain, north of the Santa Ana River. 2064 Comment
  RSA768886  Sonchus asper subsp. asper Duncan S. Bell, Jennifer Pilapil, Joshua Paolini 2010-8-18 1809 San Bernardino San Bernardino National Forest: Broom Spring; approximately 1 air mile east of Broom Flat, or 0.6 air mile northeast of Juniper Springs. 2303 Comment
  RSA770372  Sonchus asper subsp. asper Duncan S. Bell, J. D. England, Joshua Paolini 2010-6-24 1416 San Bernardino San Bernardino National Forest: North Fork of Mission Creek; collecting along a ridgeline and in a desert wash from 34.12768, -116.71523 to 34.12098, -116.69865., Approximately 3.5 air miles east of junction of Pacific Crest Trail and forest service road 1N05. 1799 Comment
  RSA787355  Sonchus asper subsp. asper Naomi Fraga, Kathleen Ashbater, Joshua Paiolini, Jennifer Pilapil 2010-7-29 3691 San Bernardino The Nature Conservancy Meadow (TNC Meadow). 2071 Comment
  SBBG121630  Sonchus asper subsp. asper E. Painter, M. Andrews 1996-7-6 HL 2879 Monterey Nacimiento River, ca. 1.8 km SE of confluence with Slickrock Crk, ca. 2.1 km N of San Miguel Crk; Ft Hunter Liggett 390 Comment
  SD135347 Image available Sonchus asper subsp. asper Geoffrey A. Levin, J. Gibson, B. Faught, T. Seymour, A. Winner, R. Levin 1993-7-3 2287 San Diego Volcan Mountain, Rutherford Ranch near AT&T transmission station. Disturbed roadsides. 1650 Comment
  SD137850  Sonchus asper subsp. asper Darin L. Banks, Steve Boyd 1995-5-17 462 Riverside NW Palomar Mt.; Cleveland National Forest, Agua Tibia Wilderness Area. N face of Agua Tibia Mt., E of Dripping Springs Alcove area W (see note 659 Comment
  SD152258  Sonchus asper subsp. asper Jon P. Rebman 2000-5-10 6660 San Diego MCAS Miramar Training Area #2 - to electric lines. 224 Comment
  SD154369  Sonchus asper subsp. asper Jeannie Gregory, M. A. Kessler, K. Duclo, N. Nenow, J. Barth 2004-2-18 616 San Diego Balboa Park; Florida Canyon between Zoo Place and Florida Drive. 50 Comment
  SD154484  Sonchus asper subsp. asper Margaret Fillius 2004-3-16 33 San Diego Rose Canyon, alongside the road through the south of the canyon, West of Regent Road, under Salix sp. 39 Comment
  SD154487  Sonchus asper subsp. asper Judy Carlstrom 2003-10-18 3 San Diego Southwest corner of Poway, hillside next to 13609 Ring Rd. - 50 yards from house 153 Comment
  SD156426  Sonchus asper subsp. asper Jon P. Rebman 2002-5-9 8046 San Diego Viejas Mountain: North of Alpine; lower, north side of mountain on USFS land just east of Kelley/Rebman ranch and T. Marshall propertyl 600 Comment
  SD158195  Sonchus asper subsp. asper Jolynn Robbins 2004-4-19 7 San Diego Damon Lane County Park in El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  SD158524  Sonchus asper subsp. asper Michael Simpson, Dinna Estrella & Robert Lauri 2003-4-11 2360 San Diego Point Loma Navy Base, Fuel Farm region. Slope down from asphalt road, ca. 100 feet southeast of warehouse 114. 42 Comment
  SD159521  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory 2003-4-15 8460 San Diego Crestridge Ecological Reserve: west of La Cresta between Alpine and El Cajon 455 Comment
  SD159762  Sonchus asper subsp. asper David Lawhead 2004-4-13 6 San Diego Agua Hedionda Lagoon - east end, Southeast of the City of Carlsbad 103 Comment
  SD160687  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2003-4-29 8688 San Diego Walker Canyon Ecological Reserve: between Boulevard and Jacumba on the north side of Interstate 8, along arroyo bottom near the pond 869 Comment
  SD161268  Sonchus asper subsp. asper Judy Gibson 2004-6-27 299 San Diego Cleveland National Forest, about 1 mile north of Descanso, along an informal trail running northeast from the end of Descanso Trail just beyond the boundary of private properties, eastern exposure within Cedar Fire (Oct 2003) area 1128 Comment
  SD161269  Sonchus asper subsp. asper Nancy Nenow 2005-2-15 98 San Diego Lopez Rim Park, Calle Cristobal just east of Camino Santa Fe, Mira Mesa 117 Comment
  SD161566  Sonchus asper subsp. asper Dick Schwenkmeyer 2005-3-10 97 San Diego Just east of Santo Road in Shepard Canyon, Tierrasanta, San Diego, CA 121 Comment
  SD165274  Sonchus asper subsp. asper Emanuel Kauder 2005-4-2 42 San Diego City of San Diego, Scripps Ranch, 0.5 miles East of Pomerado Rd on north side of Beeler Canyon Rd at the shoulder's edge. 11 Comment
  SD165275  Sonchus asper subsp. asper Emanuel Kauder 2005-3-30 29 San Diego City of San Diego, Scripps Ranch, 0.4 Miles South of Beeler Canyon Rd on east side of Creek Rd at edge of black top on flat shoulder 11 Comment
  SD165761  Sonchus asper subsp. asper MaryAnn Brooks-Gonyer, Beverly Pecunia 2005-5-6 170 San Diego Approx. 7 miles north of Escondido on Champagne Blvd, about 1/10 mile south of Lawrence Welk Drive Comment
  SD166316  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2004-5-11 10199 San Diego Sycuan Peak Ecological Reserve (California Dept. of Fish & Game): southeast of Dehesa, south of Loveland Reservoir on the lower north side of Sycuan Peak; Sweetwater River watershed in Sloane Canyon 284 Comment
  SD166318  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2004-5-25 10432 San Diego Rancho Jamul Ecological Reserve: west of Hwy. 94, south of Jamul & north of Otay Lakes Road; southwest part of reserve in a small dry pond just southwest of the old cement furnace 214 Comment
  SD166884  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory & parabotany team 2004-8-20 10666 San Diego Lake Sutherland: north of Hwy. 78 between Ramona and Santa Ysabel; dry lakebed at southeast end of lake 605 Comment
  SD167758  Sonchus asper subsp. asper Barbara Sullivan, Nan Criqui 2005-1-16 93 San Diego City of San Diego, along Carmel Valley Rd Northeast of Los Penasquitos Lagoon 14 Comment
  SD169378  Sonchus asper subsp. asper Jeannie Gregory, Joe Barth 2005-6-11 1491 San Diego Alpine, Wright's Field Preserve, 1 mile S of Interstate 8 on Tavern Road; E of Joan MacQueen Middle School 573 Comment
  SD172775  Sonchus asper subsp. asper Claude Edwards 2004-3-26 35 San Diego SW Otay Mesa. Mesa-top south of Finger Canyon, at the intersection of an E-W dirt road with a N-S cross-mesa road. ~1.0 mile S of inters of Route 905 & Caliente Ave, ~1.5 mile SW of Brown Field. 134 Comment
  SD173962  Sonchus asper subsp. asper Judy Carlstrom, Kristina Solis, Matthew Wetzal, Christian 2005-3-17 111 San Diego North of North Broadway School at 2301 N Broadway, E of I-15 in Escondido. 235 Comment
  SD175369  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory, K. Rich, Z. Principe 2006-4-27 12490 San Diego Monte Vista Ranch (owned by The Nature Conservancy): S of Ramona, NW of San Vicente Reservoir; S of San Vicente Road along Chuckwagon Road onto the Ranch; near the electric lines just N of Longs Gulch 347 Comment
  SD175370  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory, M. Mulligan, & J. Barth 2005-8-13 12296 San Diego San Vicente Reservoir: North of Lakeside, east of Hwy. 67, northeast of intersection between Moreno Ave. and Vigilante Road; northwest side of reservoir in a marshy drainage 199 Comment
  SD175371  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2006-4-21 12390 San Diego Loveland Reservoir (land owned by the Sweetwater River Valley Authority): S of Alpine, S of Japatul Valley Road and E of its junction with Dehesa Rd.; NE end of lake near the trail from the Fishing Access parking lot 417 Comment
  SD175718  Sonchus asper subsp. asper Jon P. Rebman, M. Mulligan, K. Rich, M. White & J. Stallcup 2005-9-11 12324 San Diego Long Portrero area: NE of Tecate, SW of Morena Reservoir; ca. 3 miles N of Hwy. 94 and north of Portrero Valley Road on a dirt road; vicinity of a small pond 740 Comment
  SD177286  Sonchus asper subsp. asper Andrea Harrison, Ian Harrison 2005-3-5 55 San Diego La Mesa, 1/4-1/2 mile north on fireroad directly off north end of Lake Murray Blvd, just W of Grossmont College. 259 Comment
  SD177887  Sonchus asper subsp. asper Jon P. Rebman, Michael Wall 2007-4-19 13080 San Diego Poser Mountain (Cleveland National Forest): NE of Alpine and Viejas Indian Reservation; N of Old Viejas Grade Road on the S-facing slope of the mountain 1029 Comment
  SD178737  Sonchus asper subsp. asper Victoria Marshall 2006-5-11 166 San Diego Boulder Oaks County Park ca. 2I(c) mi ENE of the junction of Highway 67 and Scripps Poway Parkway; S of Ramona. 448 Comment
  SD178738  Sonchus asper subsp. asper Ian Cain, Barbara Sullivan, Stephanie Glenn 2006-4-1 153 San Diego City of Vista. The Anstine-Audubon Bird Sanctuary. 170 meters north of intersection of Hutchinson Street and Osborne Street, 63 meters northeast of the home. 96 Comment
  SD179790  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory and L. Aerne-Hains 2007-7-9 13613 San Diego Lake Henshaw: SE of East Grade Road and E of Henshaw Truck Trail, approx. 1.3 air miles E of the dam; along the stream feeding into the NE portion of the Lake and on the NE shore 819 Comment
  SD179791  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory and L. Aerne-Hains 2007-7-9 13686 San Diego Lake Henshaw: SE of East Grade Road and S of Henshaw Truck Trail, approx. 0.5 air miles NE of the dam; along the north shore of the Lake 815 Comment
  SD179792  Sonchus asper subsp. asper Jon P. Rebman, P. Famolaro & Parabotany Team 2007-8-8 13802 San Diego Loveland Reservoir: S of Alpine and Japatul Valley Road; along the south shore, 0.3 air miles E of the dam located at the southeast end of the reservoir 413 Comment
  SD179793  Sonchus asper subsp. asper Jon P. Rebman, Parabotanist team 2007-5-8 13482 San Diego Barrett Lake: just south of the dam, along the bottom of the dam and on the canyon floor just east of Barrett Lake Road 459 Comment
  SD182014  Sonchus asper subsp. asper Richard L. Breisch, Susan L. Breisch 2006-7-1 229 San Diego Lake Morena County Park, along edge of S side of Lake Morena near end of paved part of Morena Reservoir Rd. Would be in reservoir during high water years. In drainage leading to lake. 915 Comment
  SD183783  Sonchus asper subsp. asper Sharon Paulin 2004-7-26 85 San Diego Corte Madera Ranch, Oak Valley, ca. 1I(c) mi S of gate entrance of Ranch (and I-8) on Corte Madera Rd, near dammed pond. 1120 Comment
  SD183784  Sonchus asper subsp. asper Margaret R. Mulligan, Joe Barth 2005-6-20 1213 San Diego Black Mountain, Cleveland National Forest (Palomar Ranger District), NE of Ramona. 0.7 mi W of peak of Black Mountain near old mining road along Black Mountain Truck Trail. 1002 Comment
  SD183785  Sonchus asper subsp. asper Elizabeth P. Lowe, Rachel Lowe & Grace Lowe 2006-4-30 63 San Diego San Marcos. Approx. I(c) mi south on Camino de la Cima from its intersection with La Moree Rd. 323 Comment
  SD183787  Sonchus asper subsp. asper Valerie Quate, Victoria Marshall 2006-5-24 45 San Diego Poway, W side of Boulder Mountain, on the Del Poniente Trail, ca. I(c) mi ESE of the intersection of Monte Vista Rd with Pomerado Rd. 284 Comment
  SD184680  Sonchus asper subsp. asper Larry Hendrickson 2006-5-7 1327 San Diego Banner. About 100 feet SE of the Banner Recreation Ranch parking lot, south side of State hwy. 78 in a clearing that was the old historic road to Julian. 839 Comment
  SD185564  Sonchus asper subsp. asper Larry Hendrickson, L. Louise Jee 2006-7-1 1712 San Diego Cuyamaca Rancho State Park. Soapstone Grade Fire Road, 0.7 air mi. south of intersection with County hwy. S-1 and entry gate to La Cima camp (CDF). 1381 Comment
  SD186688  Sonchus asper subsp. asper Jon P. Rebman, Margie Mulligan 2008-5-16 15205 San Diego Del Dios Highlands County Preserve: SW of Escondido, just west of S-6 (Del Dios Highway) and NW of Lake Hodges; S of the main road/trail through the preserve in a riparian area 199 Comment
  SD186689  Sonchus asper subsp. asper Jon P. Rebman 2008-5-7 15044 San Diego Hauser Wilderness: Cleveland National Forest; W of Morena Reservoir and E of Barrett Lake, canyon N of Stokes Valley along Skye Valley Road 901 Comment
  SD186690  Sonchus asper subsp. asper Jon P. Rebman 2008-5-7 15104 San Diego Hauser Wilderness: Cleveland National Forest; W of Morena Reservoir and NE of Barrett Lake, canyon W of Stokes Valley and S of Corral Canyon, hiked along trail S of Skye Valley Road 815 Comment
  SD186691  Sonchus asper subsp. asper Jon P. Rebman, Margie Mulligan 2008-5-1 14871 San Diego Hellhole Canyon Open Space Preserve: east of Valley Center and northeast of Lake Wohlford; southeast portion of preserve, approx. 0.2 miles NW of main parking area and kiosk 583 Comment
  SD190974  Sonchus asper subsp. asper Layla Aerne Hains, J. Schlachter, J. Gregory, M. Mulligan 2006-6-30 142 San Diego Town of Potrero, Hauser Mountain, Harris Ranch Rd, near old house site; ca. 3 mi N of Canyon City at Highway 94, ca. 4 mi W of Cameron Corners (inters of Hwy 94 & Buckman Springs Rd). 1099 Comment
  SD190975  Sonchus asper subsp. asper Ian Cain, J. Thorngren, R. Humphrey, D. Driscoll 2007-5-27 506 San Diego City of Lakeside. Silverwood Wildlife Sanctuary. 13003 Wildcat Canyon Road. 0.37 mi E of Wildcat Canyon Road, 0.27 mi N of Blue Sky Ranch Road, 300 meters south along stream bed east of residence 480 Comment
  SD192392  Sonchus asper subsp. asper Margaret R. Mulligan, J. Gregory, J. Rocks 2007-3-26 1756 San Diego Camp Pendleton Marine Corps Base, on cliffs above Blue Beach Training Area, 0.2 mi NW of the Santa Margarita River outlet/estuary into the Pacific Ocean. 13 Comment
  SD192393  Sonchus asper subsp. asper Jeannie Gregory, J. Litchewski, B. Pecunia, Z. Principe 2007-5-15 2417 San Diego Ramona, The Nature Conservancy, Davis Eagle Ranch, 1I(c) miles N of Ramona Airport, ca 1 mile ENE of Rangeland Road 530 Comment
  SD192395  Sonchus asper subsp. asper Jim Rocks, J. Gregory, M. Mulligan, M. Dinkins 2007-5-2 243 San Diego Camp Pendleton Marine Corps Base, Delta Training Area. Steep slopes along Roblar Road, ca. I(c) mi NW of its junction with Jardine Canyon Road. 376 Comment
  SD193640  Sonchus asper subsp. asper Margaret R. Mulligan, J. Gregory, S. Leininger 2007-4-9 1881 San Diego Camp Pendleton Marine Corps Base, Santa Margarita River, on North River Road ca. 2 miles NW of its intersection with Macs Road (accessed by Stuart Mesa). 14 Comment
  SD193641  Sonchus asper subsp. asper Margaret R. Mulligan, J. Gregory, J. Rocks 2007-4-17 1921 San Diego Camp Pendleton Marine Corps Base, Case Springs within Echo Training Area. Land surrounding southern pond, W of Case Springs Rd (Roblar Rd). 703 Comment
  SD193642  Sonchus asper subsp. asper Jeannie Gregory, J. Litchewski, B. Pecunia 2007-5-15 2513 San Diego Ramona, The Nature Conservancy, Ramona Grasslands Preserve, 2 mi W of Ramona Airport, I(c) NW of intersection of Highland Valley Road and Rangeland Road, just S of Santa Maria Creek 416 Comment
  SD197198  Sonchus asper subsp. asper Jon P. Rebman, L. Aerne-Hains, J. Gregory, & C. Brennan 2009-5-28 17860 San Diego Cleveland National Forest: Northeast of El Cajon Mountain, west of the San Diego River, and south of Barona Mesa; along El Cajon Mountain Truck Trail 669 Comment
  SD197199  Sonchus asper subsp. asper Jon P. Rebman, L. Aerne-Hains & J. Gregory 2009-5-21 17773 San Diego Cleveland National Forest: Southeast of El Cajon Mountain; west of the El Capitan Reservoir, along El Cajon Mountain Truck Trail 594 Comment
  SD197200  Sonchus asper subsp. asper Jon P. Rebman, M. Mulligan & M. Dinkins 2009-5-6 17492 San Diego Camp Pendleton Marine Corps Base: Bravo Three Training Area in the northwestern portion of base; southwest of San Mateo Road in the San Mateo riverbed 39 Comment
  SD197201  Sonchus asper subsp. asper Jon P. Rebman, M. Mulligan & M. Dinkins 2009-5-6 17380 San Diego Camp Pendleton Marine Corps Base: Alpha One Training Area in the northwestern portion of base; north of Basilone Road along San Juan Road and in the adjacent riverbed of Jardine Canyon 64 Comment
  SD198271  Sonchus asper subsp. asper Larry Hendrickson 2007-4-21 2018 San Diego Julian, Chariot Canyon, 2I(c) miles E of Inspiration Point on Hwy 79, at end of washed out mining road west of Chariot Canyon Rd. 0.3 mi. south of Lucky Strike Mine. 1013 Comment
  SD199057  Sonchus asper subsp. asper Jon P. Rebman, Karen Rich and Jerry Green 2009-6-9 18048 San Diego Cuyamaca Rancho State Park: East of Middle Peak and south of Cuyamaca Lake; in the open meadow just south of the junction of Highway 79 and Milk Ranch Road 1428 Comment
  SD200725  Sonchus asper subsp. asper Margaret R. Mulligan, J. Rocks, K. Mabb, M. Dinkins 2008-4-23 2484 San Diego Camp Pendleton Marine Corps Base, Juliett Training Area, ca. 1 mi E of the intersection of Vandegrift Blvd and Fallbrook Road, ca. I(c) mi ESE of De Luz Homes housing area 1A| mi NW of Morrow Hill. 84 Comment
  SD200726  Sonchus asper subsp. asper Margaret R. Mulligan, J. Gregory, S. Leininger 2007-4-9 1795 San Diego Camp Pendleton Marine Corps Base. Santa Margarita River, North side of estuary/outlet to Pacific Ocean, just West of I-5. 3 Comment
  SD200728  Sonchus asper subsp. asper Margaret R. Mulligan, J. Gregory, S. Leininger 2007-4-9 1835 San Diego Camp Pendleton Marine Corps Base. Santa Margarita River, on road parallel to river just east of Stuart Mesa Road. 0 Comment
  SD201417  Sonchus asper subsp. asper Margaret R. Mulligan, W. Schmidtmann, K. Mabb 2008-3-26 2143 San Diego Camp Pendleton Marine Corps Base, along NW side of Pulgas Lake, Papa One Training Area. 116 Comment
  SD204149  Sonchus asper subsp. asper Carolyn Martus 2008-3-19 467 San Diego Northeast of Fallbrook. North side of the Santa Margarita River,about 0.15 milse west of the Willow Glen trailhead. And about 1.75 miles (by air) northwest of Red Mountain Lookout. 131 Comment
  SD204150  Sonchus asper subsp. asper Barbara Booth, Justin M. Wood 2009-5-3 145 San Diego SW of Oak Grove, Rattlesnake Canyon, Cleveland National Forest, at bottom of canyon. 949 Comment
  SD204151  Sonchus asper subsp. asper Victoria Marshall 2008-4-17 764 San Diego Sycamore Canyon Preserve, Poway. Ca. 1 mi SW of intersection Scripps Poway Pkwy and Hwy 67 and 0.25 miles SE of Sycamore Canyon Road and Calle de Rob 360 Comment
  SD204152  Sonchus asper subsp. asper Victoria Marshall 2008-2-11 692 San Diego Miramar Reservoir, city of San Diego, accessed from Scripps Lake Rd ca. 0.75 mi east of intersection of Scripps Ranch Blvd and Scripps Lake Dr., along the reservoir perimeter road at the ENE finger of Lake Miramar 221 Comment
  SD206563  Sonchus asper subsp. asper Jon P. Rebman, L. Aerne Hains & parabotany volunteers 2010-7-8 19963 San Diego Cleveland National Forest: Cutca Valley on the lower northern slope of Palomar Mountain; along Cutca Valley Truck Trail 1039 Comment
  SD206564  Sonchus asper subsp. asper Jon P. Rebman, J. Schlachter, L. Aerne Hains, & volunteers 2010-6-30 19853 San Diego Hauser Mountain area: northwest of Campo: approximately 2.3 miles south of Lake Morena; on Bureau of Land Management lands along dirt road and meadow surrounded by chaparral 975 Comment
  SD206565  Sonchus asper subsp. asper Jon P. Rebman, L. Aerne Hains, J. Schlachter, & parabotany team 2010-6-3 19492 San Diego Bureau of Land Management (BLM) Property: northeast of Ramona; south of Hwy. 78 and north of Old Julian Hwy. 683 Comment
  SD207677  Sonchus asper subsp. asper Kathleen A Mauro, Andrew Mauro 2008-5-1 28 San Diego Ewing Preserve in Rancho Santa Fe, approx. 0.8 mi on the E side of Linea Del Cielo (S-8) from its intersection with La Granada (S-9), just N of La Sencilla. 75 Comment
  SD209623  Sonchus asper subsp. asper Jon P. Rebman, J. Schlachter, L. Aerne Hains, & volunteers 2010-8-15 20257 San Diego Southwest of Combs Peak: canyon off of Chihuahua/Lost Valley Road just east of Sky Oaks Field Station; on Bureau of Land Management lands 1399 Comment
  SD209624  Sonchus asper subsp. asper Jon P. Rebman, J. Schlachter, L. Aerne Hains, & volunteers 2010-8-14 20100 San Diego Along Cooper Cienega Truck Trail: S of the Riverside/San Diego County border and N of Chihuahua Valley Road; on Bureau of Land Management lands in the vicinity of a pond and canyon below 1200 Comment
  SD209625  Sonchus asper subsp. asper Jon P. Rebman, J. Schlachter, L. Aerne Hains, & volunteers 2010-6-30 19820 San Diego Southwest of Campo: South of Highway 94; on Bureau of Land Management lands along wet canyon/streambed near dirt road and approximately 0.6 miles north of the USA/Mexico border 765 Comment
  SD210077  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann and volunteers 2010-11-16 20445 San Diego Camp Pendleton: India Training Area; west of the Santa Margarita River; along De Luz Creek in the vicinity of Camp De Luz 60 Comment
  SD210793  Sonchus asper subsp. asper Jeannie Gregory, M. A. Kessler, M. Dykens, K. Rich 2010-5-22 3486 San Diego Torrey Pines State Park, Bio Blitz, along Torrey Pines Park Road, vicinity just S of park headquarters 99 Comment
  SD210794  Sonchus asper subsp. asper Carolyn Martus 2006-6-8 255 San Diego Camp Pendleton, 350 yds NW of intersection Elliott St. and West Barnett Circle, about I(c) mi E of Vandegrift Blvd, southeast corner of the base near the horse stables. 56 Comment
  SD213007  Sonchus asper subsp. asper Jon P. Rebman, Warren Schmidtmann 2011-3-17 20684 San Diego Camp Pendleton: east of I-5 and just north of the Las Pulgas Road entry/guard station, in disturbed areas on the north side of the parking lot 29 Comment
  SD214837  Sonchus asper subsp. asper Larry Hendrickson 2009-5-24 4038 San Diego Mesa Grande. San Dieguito River Park, Joint Powers Authority property. 2.8 air miles WNW of the intersection of State hwy. 78-79 and 2.4 air miles SSW of access gate at Mesa Grande Road. West side of pond (Pond #3) in a tributary of Santa Ysabel Creek. 857 Comment
  SD215417  Sonchus asper subsp. asper Darin L. Banks 1997-4-8 1802 San Diego Wilderness Gardens Preserve. Approximately 3.4 miles east of Pala south of Highway 76 along the San Luis Rey River. Areas along the main trail network from the parking area along the primary driveway within the river bottom, to higher slopes. 162 Comment
  SD215915  Sonchus asper subsp. asper Jon P. Rebman, John Martin and SDNHM volunteers 2011-4-27 21257 San Diego San Diego National Wildlife Refuge: southeast of Sweetwater Reservoir; west side of Mother Miguel Mountain; in a small canyon and on the grassland slopes around it 164 Comment
  SD215916  Sonchus asper subsp. asper Jerilyn Hirshberg 2009-8-8 2190 San Diego Cleveland National Forest, NW of Cuyamaca Mtns, 0.5 mile south of gate to McGee Flat on Eagle Peak Road, about 1.6 miles SW of intersection of Eagle Peak Road with Boulder Creek Road 1160 Comment
  SD216834  Sonchus asper subsp. asper Jon P. Rebman, John Martin & SDNHM Botany volunteers 2011-5-19 21701 San Diego San Diego National Wildlife Refuge: East of Rancho San Diego; on the lower west side of McGinty Mountain 424 Comment
  SD216835  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, B. Lardiere, & E. Cunningham 2011-4-22 21183 San Diego Camp Pendleton: Victor Training Area; south of Las Pulgas Road, west of I-5, on coastal mesas and canyons above the beach; northwest of the rest stop on I-5 southbound 14 Comment
  SD217596  Sonchus asper subsp. asper Jeannie Gregory, V. Marshall, J. La Grange, Z. Principe 2009-6-11 3233 San Diego Mesa Grande, Nature Conservancy (Wheatly Property), 2 miles W of Morettis Junction (Pala Road & Hwy 79) E of Mesa Grande Road, 2.5 miles S of dam at Lake Henshaw 1032 Comment
  SD218606  Sonchus asper subsp. asper Jeannie Gregory, J. Rebman, K. Rich, J. LaGrange 2009-5-1 3023 San Diego Mission Trails Regional Park, 2.41miles SE of Hwy 52 and Santo Road, 0.43 miles NW of Mission Gorge Road and Jackson Drive, at trailhead near river bed 53 Comment
  SD218607  Sonchus asper subsp. asper Jeannie Gregory, L. Aerne Hains, E. Piehel, M. A. Hawke 2009-3-31 2872 San Diego Santee, just W of terminus of Mast Blvd, I(c) mile NNW of intersection Riverford Road and Hwy 67, N of San Diego River, E side of a hill with a water tank 113 Comment
  SD219376  Sonchus asper subsp. asper Jon P. Rebman, Warren Schmidtmann & Victoria Marshall 2011-3-29 20996 San Diego Cleveland National Forest: ENE of Eagle Peak; along a dirt road off of Boulder Creek Road, above the pond in Kelly Creek 800 Comment
  SD219377  Sonchus asper subsp. asper Jon P. Rebman, John Martin & volunteers 2011-5-31 21995 San Diego San Diego National Wildlife Refuge: East of Bonita and just south of the Sweetwater Reservoir; Shinohara Vernal Pool area 89 Comment
  SD220248  Sonchus asper subsp. asper Michael G. Simpson 2010-5-16 3230 San Diego Mission Trails Regional Park. Rocky slope, north of creek, north of hiking trail, ca. 1.2 miles northeast of Cowles Mountain peak. 185 Comment
  SD223353  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, G. Kenney, et al. 2012-3-28 23113 San Diego Camp Pendleton: Training Area Romeo II; San Onofre Mountains: east of I-5 and southwest of San Onofre Peak, along San Onofre Peak Road and surrounding slopes 280 Comment
  SD223354  Sonchus asper subsp. asper Jon P. Rebman, J. Green, V. Marshall, D. Sinclair, C. Brennen 2012-5-2 23627 San Diego Cleveland National Forest: Buckman Springs area, E of Morena Reservoir; along the creek in the vicinity of The Narrows east of Buckman Springs Road 960 Comment
  SD225473 Image available Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann and G. Kenney 2012-5-22 24014 San Diego Camp Pendleton: Training Area Romeo II; southeast of San Onofre Peak; along Horno Canyon Road east of El Camino Real and I-5 210 Comment
  SD226013  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, V. Marshall, M. Sweet, T. Barckley 2012-5-8 23701 San Diego McCain Valley area: north of Boulevard and I-8; east of the junction of McCain Valley Road and Lost Valley Road in Lost Valley 1150 Comment
  SD228137  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, J. Green, V. Marshall,T. Barckley 2012-5-31 24545 San Diego Lake Hodges: south of Escondido; southeast of the intersection of Lake Drive and Beech Lane; north side of Lake along the shore near a small walking pier and adjacent habitats 99 Comment
  SD230474  Sonchus asper subsp. asper Jon P. Rebman, John LaGrange & Jerry Greene 2012-6-7 24725 San Diego Barrett Lake: on Pig Point along the west side of Barrett Lake and just east of Barrett Lake Road 490 Comment
  SD231569  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann & G. Kenney 2013-3-27 25666 San Diego Camp Pendleton: northwest portion of Base; Training Area Finch; east of Basilone Road and just off of San Juan Road along San Onofre Creek 74 Comment
  SD231570  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann & G. Kenney 2013-4-24 26041 San Diego Camp Pendleton: central portion of Base; Training Area Kilo One; off of a dirt road west of Basilone Road, in the bottom of a canyon near a pond 79 Comment
  SD235274  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann & G. Kenney 2013-5-7 26268 San Diego Camp Pendleton: northeast portion of Base; Training Area Hotel; northwest of Fallbrook, just south of De Luz Road along the Santa Margarita River 79 Comment
  SD235275  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann & G. Kenney 2013-5-1 26199 San Diego Camp Pendleton: central portion of Base; Training Area India; northeast of Basilone Road and east of Roblar Road; along a canyon bottom south of a dirt road 124 Comment
  SD235916  Sonchus asper subsp. asper Joe Barth 2011-7-1 1809 San Diego Bear Valley Rd, Descanso District of Cleveland National Forest. ~2.2 miles air ~SSE of downtown Pine Valley. 1.3 miles air ~E of Long Valley Pk. 1385 Comment
  SD238635  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann & G. Kenney 2014-4-22 27913 San Diego Camp Pendleton: northwestern portion of Base; San Mateo Creek just west of Guacamole Road and near the convergence with Cristianitos Creek 21 Comment
  SD242526  Sonchus asper subsp. asper Melvin M. Sweet 2009-8-15 841 San Diego Anza-Borrego Desert State Park, Coyote Canyon; near the Second Crossing; about 7.8 miles NW of the intersection of DiGiorgio Rd and Highway S22. 340 Comment
  SD243589  Sonchus asper subsp. asper John LaGrange 2011-5-14 853 San Diego Cleveland National Forest; Guejito Truck Trail, about 0.5 miles S of intersect with Orozco Truck Trail, upper end of Boden Canyon where the old road crossed the creek and climbed out to the east 449 Comment
  SD243590  Sonchus asper subsp. asper Christopher Kopp, Janel Kopp 2009-4-11 1418 San Diego Miramar; Elliot Chaparral Reserve; on dirt road 0.86 mile E of intersection with Pomerado Road; rocky slope bordering south tending seasonal wash 192 Comment
  SD243591  Sonchus asper subsp. asper Larry Hendrickson 2011-6-12 5396 San Diego Volcan Mountain, Volcan Mountain Foundation property. 4.3 air miles N of Julian and 0.4 air mile N and upslope from Ironside Spring, a few yards S of Volcan Road in area formerly known as HunterAs Camp. 1074 Comment
  SD243593  Sonchus asper subsp. asper Larry Hendrickson 2011-5-19 5335 San Diego Volcan Mountain, Volcan Mountain Foundation property. 4.3 air miles N of Julian and 0.4 air mile N and upslope from Ironside Spring, a few yards S of Volcan Road in area formerly known as HunterAs Camp. 1526 Comment
  SD244966  Sonchus asper subsp. asper Jon P. Rebman, Layla Aerne-Hains, Carl Bell, & David Thompson 2014-5-16 28613 San Diego Manzanita Band of Kumeyaay Nation Reservation: northwest of Boulevard; approx. 4.5 miles north of the Golden Acorn Casino & I-8: vicinity of Manzanita Lake 1200 Comment
  SD245679  Sonchus asper subsp. asper Richard L. Breisch 2012-5-11 889 San Diego City of San Diego; Tecolote Canyon Natural Park, east of Tecolote Nature Center; S of Tecolote Road; N of Alcala Parkway 14 Comment
  SD245680  Sonchus asper subsp. asper Richard L. Breisch 2011-6-10 756 San Diego Cleveland National Forest, NE of Morena Lake; north side Corral Canyon Road; near junction with Buckman Springs Road. 940 Comment
  SD245681  Sonchus asper subsp. asper Richard L. Breisch 2011-8-17 829 San Diego Lake Morena County Park; along Cottonwood Creek, just south of Corral Canyon Road about 1.3 mile SW of junction with Buckman Springs Road (S-1). 920 Comment
  SD246768  Sonchus asper subsp. asper Larry Hendrickson, Sharyl Massey 2011-6-26 5423 San Diego Volcan Mountain. Volcan Mountain Foundation property 4.1 air miles NNE of Julian, 0.3 air mile NNE and upslope from Ironside Spring and 0.2 mile S of intersection of Volcan Road and a northern spur road to Oak Ridge area. 1577 Comment
  SD248959  Sonchus asper subsp. asper Larry Hendrickson 2013-5-27 6060 San Diego Pine Hills, Cuyamaca Mountains. William Heise County Park, 3.1 air miles SSE of Julian. Fern Trail, 0.1 mile SE of trailhead at intersection with Harrison Park Road and Cedar Creek bridge crossing. 1251 Comment
  SD248960  Sonchus asper subsp. asper Nancy Nenow 2011-2-28 1662 San Diego Balboa Park; south-east corner between 26th Street and Golf Course Drive on top of mesa; 0.25 mile N intersection Golden Hill Drive and Golf Course Drive 63 Comment
  SD248961  Sonchus asper subsp. asper Mary Jo Churchwell 2012-4-2 607 San Diego Anza-Borrego Desert State Park; Borrego Palm Canyon, about 2.5 miles NW of intersection Hoberg Road and Palm Canyon Drive 305 Comment
  SD249990  Sonchus asper subsp. asper Nancy Nenow 2012-4-3 2424 San Diego Leucadia; north of La Costa Avenue; west side of Highway 5 west of freeway off-ramp; S side of Batiquitos Lagoon 6 Comment
  SD251008  Sonchus asper subsp. asper Mike Bigelow 2013-3-30 413 San Diego Borrego Springs; on E side Di Giorgio Road; 170 yards N of intersection Palm Canyon Drive 170 Comment
  SD252043  Sonchus asper subsp. asper Nancy Nenow, Char Glacy 2011-5-5 1888 San Diego Warner Springs Ranch; along west side of Highway 79; just south of golf course parking lot. 956 Comment
  SD252549  Sonchus asper subsp. asper Nancy Nenow, Alina Levy 2011-4-17 1792 San Diego La Jolla; on bluff; above and about 325 yards SE of Birch Aquarium near parking lot 91 Comment
  SD253035  Sonchus asper subsp. asper Richard L. Breisch 2014-5-18 1103 San Diego City of San Diego; San Clemente Park south side route 52, just SW of junction I-805 and Highway 52; near Kroc Trail & by the creek. 73 Comment
  SD253696  Sonchus asper subsp. asper Larry Hendrickson 2014-6-14 6421 San Diego Cuyamaca Rancho State Park; west slope of North Peak. Meadow adjacent to Azalea Creek 0.3 mile WNW and downslope from KelleyAs Ditch Trail/fire road, 1.1 air miles NW of peak and 0.7 mile N of intersection with EngineerAs Road. 1463 Comment
  SD253697  Sonchus asper subsp. asper Richard L. Breisch 2014-5-17 1089 San Diego City of San Diego; San Clemente Park south side route 52, just SW of junction I-805 and Highway 52; on Kroc Trail 78 Comment
  SD253698  Sonchus asper subsp. asper Dick Schwenkmeyer 2011-3-28 531 San Diego Santee; Mission Trails Regional Park; 1/4 mi. south of Big Rock trailhead on Mesa Road 149 Comment
  SD254251  Sonchus asper subsp. asper Jon Rebman, W. Schmidtmann, G. Kenney, & P. McConnell 2016-4-8 31409 San Diego Camp Pendleton: northern portion of Base; Charlie Training Area: along ridgetop on Talega Road just north of San Mateo Creek 452 Comment
  SD256431  Sonchus asper subsp. asper Larry Hendrickson 2015-4-11 6599 San Diego Banner Canyon; Bureau of Land Management property; W side of State Route 78 (Banner Grade); 1.7 air miles E of Julian; 2.1 surface miles SE of intersection with Wynola Road. 996 Comment
  SD258078  Sonchus asper subsp. asper Frank Landis, Kye Ok Kim 2013-4-17 2013041702 San Diego Del Mar Mesa; City of San Diego; vicinity 600 yards WSW of the intersection Torrey Santa Fe Road and Camino del Sur; growing in canyon bottom in area disturbed by trail and flooding 91 Comment
  SD258079  Sonchus asper subsp. asper Frank Landis 2015-3-27 32705 San Diego City of San Diego; Del Mar Mesa; 0.30 mile SW of intersection of Highway 56 and Camino del Sur; south of trail in bottom of Deer Canyon. Flora of Del Mar Mesa Project of San Diego City Parks, CDFG, USFWS, and CNPSSD. 106 Comment
  SD263381  Sonchus asper subsp. asper Onkar Singh, M. Honer 2015-4-9 5403 San Diego Naval Weapons Station Seal Beach Detachment Fallbrook, North Magazine, study area S, ca. 50 m west of Sidewinder Rd and 85 m north of Shrike Rd. 143 Comment
  SDSU15661  Sonchus asper subsp. asper Michael G. Simpson, Dinna Estrella & Robert Lauri 2003-4-11 2360 San Diego Point Loma Navy Base, 'Fuel Farm' region. Slope down from asphalt road, ca. 100 feet southeast of warehouse 114. 43 Comment
  SDSU15915  Sonchus asper subsp. asper Ed Woch 2004-4-4 72 San Diego Miramar, west and behind garbage dump at Mast Rd. 221 Comment
  SDSU18759  Sonchus asper subsp. asper C. Matt Guilliams, W. Loeffler, J. MacAller 2008-4-30 648 San Diego Marine Corps Base Camp Pendleton. Santa Margarita River Estuary, south of main channel, ca. 200m east of Interstate 5. 4 Comment
  SDSU21805  Sonchus asper subsp. asper Chie Horita, Michael G. Simpson, Sam Anderson, Danielle Ramirez, Lindsay Rubin 2016-3-17 San Diego San Diego State University, staircase leading from Canyon Crest Drive to Parking lot 15 (formerly X). 99 Comment
  SDSU21806  Sonchus asper subsp. asper Emma Billings, Briahna Gillespie 2016-4-26 3 San Diego San Diego State University Ecological Reserve, north of I-8 from campus, adjacent to creek area, very sun-exposed, on an inclining hill. 41 Comment
  SDSU22087  Sonchus asper subsp. asper Michael G. Simpson, Margaret Mulligan 2017-4-11 4068 San Diego San Diego State University Ecological Reserve, north of I-8 from campus. East region. 97 Comment
  SJSU1500  Sonchus asper subsp. asper C. W. Sharsmith 1954-5-21 6157 Santa Clara by Stevens Cr Dam, E slope Santa Cruz Mts 213 Comment
  UC2045115  Sonchus asper subsp. asper Nick Jensen with Onkar Singh, Katie Gallagher, Tim Thomas 2014-5-3 1299 Kern Tejon Ranch. Meadow east of the National Cement Plant and south of the Contour Road. Comment
  UCD133996  Sonchus asper subsp. asper Frederica Bowcutt; Jolie Henricks and Jeff Kennedy 1994-5-1 1772 Sonoma Sugarloaf Ridge State ParkAbout 40 air miles N of San Francisco, 11 air miles E of Santa Rosa, 1.5 air miles NE of Kenwood and 18 air miles NW of Napa. In Adobe Canyon N of Sugarloaf Ridge along the S edge of Sonoma Creek at the parking lot/trail head of Goodspeed Trail. 198 Comment
  UCD136128  Sonchus asper subsp. asper A. S. Crafts 1926-7-8 425 Yolo University Farm Campus, Davis. Comment
  UCD136131  Sonchus asper subsp. asper Daryl Koutnik 1978-3-31 199 Los Angeles west fork of Triunfo Creek near Westlake Village homes. 274 Comment
  UCD136133  Sonchus asper subsp. asper B. Pitzer 1997-4-20 3182 Riverside Lakeview Mountains. Intersection of Dutton St. with Voltaire Vista Road. 610 Comment
  UCD136139  Sonchus asper subsp. asper Clifton F. Smith 1944-5-5 801 Santa Barbara West rim of Mission Canyon, Santa Barbara. 365 Comment
  UCD136145  Sonchus asper subsp. asper Grady L. Webster; Oren Pollak 1992-3-22 7744 Sacramento Consumnes River Preserve, Area 6: just east of Southern Pacific tracks. 1 Comment
  UCD136147  Sonchus asper subsp. asper Collector unknown Date Unknown s.n. Yolo exact location unknown. Comment
  UCD144654  Sonchus asper subsp. asper Alice Warrick 2008-4-5 s.n. Napa Quail Ridge UC Reserve. 2005 Pleasure Fire burn site, along west loop road, north of Decker canyon. 243 Comment
  UCD146250  Sonchus asper subsp. asper Daniel S. Park; K. Yeo 2010-4-16 19 Yolo Davis, 2nd St. roadside. 14 Comment
  UCD151028  Sonchus asper subsp. asper D. S. Park 2010-6-1 109 Yolo Dixon. Edges of cornfield across st. from Walmart. 12 Comment
  UCD159465  Sonchus asper subsp. asper D. S. Park 2010-8-13 219 Napa St. Helena. Along Fulton Ln. Growing in the fringes of orchards. 71 Comment
  UCD160543  Sonchus asper subsp. asper Ellen Dean; Craig Thomsen 2015-3-21 8597 Yolo Audubon Bobcat Ranch. Western part of ranch, just north of Hwy 128 and N of Putah Creek. Area E of Bray Canyon at base of large escarpment labeled 'spring' on topo maps. Burned in 2014. 220 Comment
  UCD21226  Sonchus asper subsp. asper J. Shepard 2000-4-1 99 Yolo Yolo County Grasslands Park: East of Davis, from intersection of I-80 and Mace Blvd., 3.5 mi. south on Mace Blvd. (County Road 104), thence east along unpaved entrance road. South of entry road after parking lots on S side. 12 Comment
  UCD21311  Sonchus asper subsp. asper J. Shepard 2000-5-20 256 Yolo Yolo County Grasslands Park: East of Davis, from intersection of I-80 and Mace Blvd., 3.5 mi. south on Mace Blvd. (County Road 104), thence east along unpaved entrance road, past parking lots on south side. 12 Comment
  UCD46504  Sonchus asper subsp. asper Ellen Dean; Carol Witham and Rod Ries 2005-5-9 2574 Sacramento California: Sacramento County, Deer Creek Hills Reserve. Along Latrobe Rd. at entrance to corral. 67 Comment
  UCD50127  Sonchus asper subsp. asper M. Tu 1999-5-13 239 Sacramento Cosumnes River Preserve Plant Inventory - Seed Bank Plants. 1 Comment
  UCD74533  Sonchus asper subsp. asper J. E. Sandoval 1995-4-30 151 Merced Great Valley Grasslands State Park (encompasses the former Fremont Ford State Recreation Area). South of the town of Stevinson, 1 mi. south of Hwy 140 on Hwy 165. 17 Comment
  UCD80924  Sonchus asper subsp. asper Ellen Dean; F. Singh, L. Raber, C. Kraintz, R. Ghaffarzadeh 2009-4-1 5327 Yolo city of Woodland. Mavis Henson field property on the east side of County Road 102, just south of County Road 25. Property owned by city of Woodland. Old rodeo parking area. 9 Comment
  UCD87988  Sonchus asper subsp. asper Ellen Dean; K. Mawdsley, R. and R. Norris,T. and M. Starbuck,G. Walden 2010-6-30 6542 Alpine Grover Hot Springs State Park, W of town of Markleeville. W side of park across the street from hot springs facility. 1810 Comment
  UCD89933  Sonchus asper subsp. asper Ellen Dean and Margaret Starbuck; K. Mawdsley, L. Huiet, P. McIntyre, C. Loughran 2010-8-2 6759 Alpine Grover Hot Springs State Park, W of town of Markleeville. West side of park directly N of hot springs near culvert where hot spring effluent emerges on N side of road. 1805 Comment
  UCR114931  Sonchus asper subsp. asper Julie A. Greene 1993-4-30 1259 Riverside San Jacinto Valley, San Jacinto Wildlife Area, south of visitors center, by waterfowl kiosk, east of Davis Road 433 Comment
  UCR144454  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2003-4-29 8688 San Diego Peninsular Range, Walker Canyon Ecological Reserve: between Boulevard and Jacumba on the north side of Interstate 8, along arroyo bottom near the pond 870 Comment
  UCR156864  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2004-5-11 10199 San Diego Sycuan Peak Ecological Reserve (California Dept. of Fish & Game): southeast of Dehesa, south of Loveland Reservoir on the lower north side of Sycuan Peak; Sweetwater River watershed in Sloane Canyon 285 Comment
  UCR159528  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2004-5-25 10432 San Diego Peninsular Range, Rancho Jamul Ecological Reserve: west of Hwy. 94, south of Jamul & north of Otay Lakes Road; southwest part of reserve in a small dry pond just southwest of the old cement furnace 215 Comment
  UCR161331  Sonchus asper subsp. asper George K. Helmkamp, E. A. Helmkamp 2005-3-5 9020 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness north of Lake Lopez, Upper Lopez Canyon Road, 7.2 mi north of jct with Lopez Road and at Water End Road 174 Comment
  UCR197148  Sonchus asper subsp. asper LeRoy Gross 2006-6-8 2489 Kern Southern Sierra Nevada Range, Scodie Mountains, Kiavah Wilderness in the Sequoia National Forest, upper reaches of Cane Canyon west from Horse Canyon Saddle, east of Yellow Jacket Springs 1789 Comment
  UCR222138  Sonchus asper subsp. asper Jim Andre 2010-6-4 13898 San Bernardino Eastern Mojave Desert, Mid Hills, Mojave National Preserve; northern Pinto Valley at Howe Spring, 0.7 mi. north of Bathtub Spring, c. 2.5 mi. west of 4th of July Cyn (New York Mtns) 1741.02 Comment
  UCR238743  Sonchus asper subsp. asper George K. Helmkamp, E. A. Helmkamp 2012-2-9 18540 Glenn Sacramento Valley, Norman Road/ Rd. 68, 0.4 mile west of the Colusa County line, beside the Sacramento National Wildlife Refuge 24 Comment
  UCR255305  Sonchus asper subsp. asper Richard L. Breisch 2011-6-10 756 San Diego Cleveland National Forest, northeast of Morena Lake, north side of Corral Canyon Road, near junction with Buckman Springs Road. Square: S22 940 Comment
  UCSC001617  Sonchus asper subsp. asper Unknown 1995-4-11 s.n. Monterey Found in a sloping meadow surrounded by Mixed Hardwood Forest alongside the Interpretive trail. Interpretive trail - Landels-Hill Big Creek Reserve, Santa Lucia Mountains Comment
  UCSC001978  Sonchus asper subsp. asper G. T. Nordstrom 1937-6-4 1305 Monterey Fort Ord, UC Reserve Site: D/3 122 Comment
  UCSC001980  Sonchus asper subsp. asper Unknown 1995-4-11 s.n. Monterey Fort Ord, UC Reserve Site: D/3 Comment
  CATA2800  Sonchus asper subsp. asper Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-30 48745 Santa Barbara Santa Rosa Island: Canada Lobos 22 Comment
  JOTR01289  Sonchus asper subsp. asper Cole, James E. 1941-5-27 794 Riverside Joshua Tree National Park. BARKER DAM 1310 Comment
  JROH1259  Sonchus asper subsp. asper John Hunter Thomas 1986-5-15 24043 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  LA32095  Sonchus asper subsp. asper Peter H. Raven; 1959-10-25 14700 Los Angeles SANTA MONICA MOUNTAINS, Arroyo Sequit, 1.6 mi N of the Coast Hwy. 137 Comment
  OBI64203  Sonchus asper subsp. asper Margaret Przybylski 2003-10-4 16 Alameda The Oakland Zoo, lower park. N of Education dept above rd 76 Comment
  OBI64344  Sonchus asper subsp. asper Margaret Przybylski, Margaret Thompson 2004-4-9 140 Alameda The Oakland Zoo, E of main parking lot in rolling hills 152 Comment
  POM6197  Sonchus asper subsp. asper L. T. Street 1918-5-30 s.n San Bernardino Lytle Creek Canyon. Comment
  RSA0024986  Sonchus asper subsp. asper Peter Rubtzoff 1975-6-26 8139 El Dorado U.C. Blodgett Forest Research Station, Sand Mountain Blvd., 0.65 mi south of County Road. 1186 Comment
  RSA0082716  Sonchus asper subsp. asper Ernest C. Twisselmann 1964-7-17 9749 Kern Southeast end of Castaic Lake. 1059 Comment
  RSA0127006  Sonchus asper subsp. asper Louis C. Wheeler 1967-7-20 10124 Los Angeles Aliso Canyon. 1067 Comment
  RSA250086  Sonchus asper subsp. asper R. F. Thorne, Larry E. DeBuhr, et al. 1972-10-13 42445 San Bernardino due S of Lost Lake and near Blue Cut. 807 Comment
  RSA250524  Sonchus asper subsp. asper R. F. Thorne, John Dourley 1967-10-10 37332 Los Angeles San Gabriel Mtns., Angeles National Forest: Jackson Lake. 1867 Comment
  RSA602807  Sonchus asper subsp. asper L. C. Wheeler 1967-7-13 9954 San Bernardino San Gabriel Mountains: Lytle Creek Village, Lytle Creek. 1067 Comment
  RSA617267  Sonchus asper subsp. asper Mary DeDecker 1972-6-26 2946 Inyo Sierra Nevada: Owens Valley, earthquake fault east of Independence; Citrus Road. 1143 Comment
  RSA788954  Sonchus asper subsp. asper Peter Rubtzoff 1955-9-24 2153 Sonoma Duncans Mills Marsh. Comment
  SEINET10615452  Sonchus asper subsp. asper David B. Dunn 1941-2-22 Dunn 684 Los Angeles UCLA campus along Westwood Blvd. Comment
  UCD133986  Sonchus asper subsp. asper Frederica Bowcutt 1988-7-14 1093 Mendocino Van Damme State Park. Two and one-half air miles SE of Mendocino and approx. 1 mile up Little River from Van Damme Beach. Along Fern Canyon trail. 30 Comment
  UCD133992  Sonchus asper subsp. asper Frederica Bowcutt 1996-5-24 2171 Sonoma Sugarloaf Ridge State Park. About 50 air miles N of San Francisco, 10 air miles E of Santa Rosa, 2.5 air miles NE of Kenwood and 18 air miles NW of Napa. Along Adobe Canyon Road near entrance. Comment
  UCD134006  Sonchus asper subsp. asper B. Crampton 1957-4-16 3938 Sacramento Junction of Florin-Perkins Road and Fruitridge Road, 2 miles south of Perkins. East of the Sacramento Signal Depot. Comment
  UCD136125  Sonchus asper subsp. asper Perry S. Allen 1969-4-21 206 Stanislaus 2.5 miles southwest of La Grange. Comment
  UCD136126  Sonchus asper subsp. asper L. Angst Date Unknown s.n. Unknown County unknown: exact location unknown. Comment
  UCD136135  Sonchus asper subsp. asper Chas. H. Quibell 1953-5-22 2020 Fresno Annadale Ave. east of Sanger, west edge of Kings R. bottoms. Comment
  UCD136136  Sonchus asper subsp. asper Bob Rodin 1943-4-16 117 Alameda UC Berkeley. Strawberry Canyon. West of the Botanical Garden. Comment
  UCD136141  Sonchus asper subsp. asper Robert F. Thorne; B. Prigge, D. Michener 1978-5-26 51637 San Bernardino Granite Mountains: sandy bottom of Bull Canyon at corner. 1188 Comment
  UCD136142  Sonchus asper subsp. asper Robert F. Thorne; P. C. Everett 1964-2-7 33456 Los Angeles Lower end of Pebbly Beach Canyon near road, E end of Santa Catalina Island. 76 Comment
  UCD136143  Sonchus asper subsp. asper J. M. Tucker 1951-6-26 2136 Sonoma at roadside, near summit of range, road from Glen Ellen to Oakville. Comment
  UCD136146  Sonchus asper subsp. asper M. Wiesendanger 1927-5-5 719 Sonoma Sonoma. Comment
  UCD136149  Sonchus asper subsp. asper Ipso. 1904-3-22 s.n. Los Angeles St Anna. Comment
  UCD32803  Sonchus asper subsp. asper Beecher Crampton 1954-10-19 2294 Solano 0.5 miles south of Suisun, Suisun Marsh. Comment
  UCD38748  Sonchus asper subsp. asper Beecher Crampton 1957-9-16 4613 Yolo 8.5 miles northwest of Davis. Comment
  UCSC004030  Sonchus asper subsp. asper Randall Morgan 2003-5-4 3819 Santa Cruz Laguna Creek Road Comment
  UCSC007747  Sonchus asper subsp. asper Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC168178  Sonchus oleraceus Sarah J. DeGroot; Krina De Groot; Leland Lubinsky; Linda Lee Worlow 2004-3-17 3772 San Bernardino Whipple Mountains: Whipple Wash, ~2.5 hr. walk upstream from powerline road 316 Comment
  CAS-BOT-BC172738  Sonchus oleraceus Sarah J. De Groot 2004-3-29 3933 San Bernardino Whipple Mountains: Copper Basin reservoir, ~NE side of lake 302 Comment
  CAS-BOT-BC177409  Sonchus oleraceus Sarah J. De Groot; J. Mark Porter 2003-3-1 1062 San Bernardino Whipple Mountains: Bass Point, along Parker Dam road 107 Comment
  CAS-BOT-BC182518  Sonchus oleraceus Sarah J. DeGroot; Angela Gatto; Chris Stevenson; Constance Baldwin 2003-4-19 2351 San Bernardino Whipple Mountains: Canyon on NE side of mountains, off powerline road 287 Comment
  CAS-BOT-BC374559  Sonchus oleraceus D. E. Breedlove 1970-3-29 17293 Inyo In Surprise Canyon between Ballarat and Panamint City. Panamint Mountains 1127 Comment
  CAS-BOT-BC374562  Sonchus oleraceus John Thomas Howell 1958-8-10 34270 Madera Miller Meadow 2103 Comment
  CAS-BOT-BC374563  Sonchus oleraceus Ward B. Holt 1952-10-12 s.n. Madera Bass Lake 1066 Comment
  CAS-BOT-BC374564  Sonchus oleraceus John Thomas Howell 1964-4-29 40648 Mariposa Mariposa 609 Comment
  CAS-BOT-BC374567  Sonchus oleraceus Raymond Lindholm 1961-2-24 s.n. Riverside Banning Comment
  CAS-BOT-BC374568  Sonchus oleraceus N. Aitkenhead 1977-2-3 2133 Riverside N. of Mule Mnts in sink So. of Sand Dunes Comment
  CAS-BOT-BC374598  Sonchus oleraceus E. A. McGregor 1917-2-5 2008 Imperial Colorado Desert. 2 mi south of El Centro Comment
  CAS-BOT-BC374599  Sonchus oleraceus K. Larson 1976-1-14 1975 Imperial 4 mi. SW of Heber at Central Main Canal Comment
  CAS-BOT-BC374600  Sonchus oleraceus Roxana S. Ferris; Ruth P. Rossbach 1938-5-18 9627 A Imperial Upper end of Painted Groge, Carisso Mts. Comment
  CAS-BOT-BC374610  Sonchus oleraceus S. B. Parish 1914-5-15 9132 Los Angeles Santa Monica Comment
  CAS-BOT-BC374616  Sonchus oleraceus Henry J. Thompson; Peter H. Raven 1959-6-4 14346 Los Angeles Santa Monica Mountains. Point Dume 12 Comment
  CAS-BOT-BC374621  Sonchus oleraceus Ernest C. Twisselmann 1971-12-9 18553 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Dorothy Twisselmann Ranch, eastern San Luis Obispo County 670 Comment
  CAS-BOT-BC374622  Sonchus oleraceus Ernest C. Twisselmann 1971-12-9 18553 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Dorothy Twisselmann Ranch, eastern San Luis Obispo County 670 Comment
  CAS-BOT-BC374623  Sonchus oleraceus Ernest C. Twisselmann 1954-5-28 1303 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Chris Twisselmann Ranch: Eastern San Luis Obispo County Comment
  CAS-BOT-BC374629  Sonchus oleraceus Peter H. Raven; Michael P. Johnson 1967-5-1 21198 Marin Angel Island. Slopes above Hospital Cove, west side of island 60 Comment
  CAS-BOT-BC374660  Sonchus oleraceus Ira L. Wiggins 1965-11-3 20314 Orange Orange grove just east of California State College campus, Fullerton Comment
  CAS-BOT-BC374661  Sonchus oleraceus Ira L. Wiggins 1965-10-25 20297 Orange Curbway on Dorothy Lane near Lincoln Avenue, Fullerton Comment
  CAS-BOT-BC374663  Sonchus oleraceus Ira L. Wiggins 1966-5-25 20668 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton Comment
  CAS-BOT-BC374668  Sonchus oleraceus F. H. Billings 1923-3-1 s.n. San Bernardino Redlands Comment
  CAS-BOT-BC374669  Sonchus oleraceus S. B. Parish; W. F. Parish 1883-1-1 790 San Bernardino San Bernardino Comment
  CAS-BOT-BC374676  Sonchus oleraceus Volney Rattan 1877-1-1 s.n. San Francisco San Francisco Comment
  CAS-BOT-BC374677  Sonchus oleraceus Volney Rattan 1877-4-29 s.n. San Francisco San Francisco Comment
  CAS-BOT-BC374679  Sonchus oleraceus John Thomas Howell 1956-6-17 31591 San Francisco Summit ridge of Bayview Hills, San Francisco Comment
  CAS-BOT-BC374691  Sonchus oleraceus Peter H. Raven 1954-3-21 6447 San Francisco Slopes along Lobos Creek near its mouth, San Francisco Comment
  CAS-BOT-BC374695  Sonchus oleraceus Wm. F. Herrin 1918-8-29 s.n. San Francisco San Francisco Comment
  CAS-BOT-BC374699  Sonchus oleraceus John H. Thomas 1965-4-29 10602 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC374700  Sonchus oleraceus John H. Thomas 1958-3-19 7054 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco 91 Comment
  CAS-BOT-BC374706  Sonchus oleraceus Fred Hemphill 1973-5-6 781 San Mateo San Carlos. Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC374713  Sonchus oleraceus Henry M. Pollard 1957-10-2 s.n. Santa Barbara So. Pac. R. R. yards, Santa Barbara Comment
  CAS-BOT-BC374718  Sonchus oleraceus Herman Knoche 1919-7-19 Series A, No. 1125 Santa Barbara San Miguel Island Comment
  CAS-BOT-BC374723  Sonchus oleraceus W. R. Dudley 1897-6-1 s.n. Santa Clara Santa Cruz Mountain Peninsula. Stanford University Comment
  CAS-BOT-BC374726  Sonchus oleraceus J. H. Thomas 1954-3-15 3791 Santa Clara Growing between Saratoga and Saratoga Summit 548 Comment
  CAS-BOT-BC374730  Sonchus oleraceus Josephine D. Randall 1907-6-14 98 Santa Clara Santa Cruz Peninsula. Stanford University Comment
  CAS-BOT-BC374732  Sonchus oleraceus J. H. Thomas 1950-3-30 1384 Santa Cruz Along Ocean Beach just outside of eastern limit of city of Santa Cruz Comment
  CAS-BOT-BC374734  Sonchus oleraceus J. H. Thomas 1950-3-27 1360 Santa Cruz Davenport Landing Comment
  CAS-BOT-BC374735  Sonchus oleraceus J. H. Thomas 1950-2-26 1275 Santa Cruz Along coast at western end of Cliff Drive, Santa Cruz Comment
  CAS-BOT-BC374736  Sonchus oleraceus J. H. Thomas 1949-10-9 1140 Santa Cruz Near Highway 9 about 1 mile north of drinking fountain toward Saratoga Summit 457 Comment
  CAS-BOT-BC374738  Sonchus oleraceus John Thomas Howell 1933-9-17 11672 Solano Suisun Comment
  CAS-BOT-BC374740  Sonchus oleraceus Alice Eastwood 1920-7-31 9992 Solano Vallejo Comment
  CAS-BOT-BC374746  Sonchus oleraceus Henry M. Pollard 1970-5-26 s.n. Ventura On Casitas Pass Road about 1 mile north of Ventura River bridge, Foster Park Comment
  CAS-BOT-BC374752  Sonchus oleraceus Steven A. Junak 1986-4-22 MA- 101 Ventura California Islands. Middle Anacapa Island: N edge of terrace, W of Sea Arch Peninsula 60 Comment
  CAS-BOT-BC374753  Sonchus oleraceus E. R. Blakley 1961-5-18 4386 Ventura California Channel Islands. Large canyon north side of the highest peak on the west island. Anacapa Island 91 Comment
  CAS-BOT-BC423335  Sonchus oleraceus A. Williams; C. Darling; M. Garcia; R. Brostrom; L. Juarez; A. Juarez 2014-4-26 14618 Marin Mount Tamalpais. Marin Municipal Water District lands: Across the bridge from Leo T. Cronin Fish Viewing Area, near gate along Lower Peters Dam Road. Comment
  CATA1193  Sonchus oleraceus Mark L. Hoefs 1995-5-30 2198 Los Angeles Santa Catalina Island: Near Ben Weston Road 57 Comment
  CATA1249  Sonchus oleraceus Mark L. Hoefs, Phil Hartman, Bret Marin 1995-1-27 2329 Los Angeles Santa Catalina Island: Ballast Point at Catalina Harbor 2 Comment
  CATA1451  Sonchus oleraceus Mark L. Hoefs, Robert F. Thorne 1996-4-6 2633 Los Angeles Santa Catalina Island: End of Renton Mine Road 268 Comment
  CATA855  Sonchus oleraceus Mark L. Hoefs, Robert F. Thorne, John M. Tucker, Grady L. Webster 1992-3-30 1664 Los Angeles Santa Catalina Island: Little Harbor 4 Comment
  CDA10181  Sonchus oleraceus M. M. Sweet 2007-5-1 416 San Diego City of San Diego; 0.2 mile northeast of intersection of Eastgate Mall and Genesee Avenue, 1.6 miles southeast of intersection of I-5 and I-805. Near top of canyon running from Eastgate Mall to Roselle Street. (32.8794 N, 117.2127 W) Comment
  CDA11809  Sonchus oleraceus G. F. Hrusa 1990-4-2 7771 Sacramento Natoma Unit-Folsom Lake State Rec. Area; W side of lake, approx. 1/3 mile upstream from Nimbus Dam. Comment
  CDA15245  Sonchus oleraceus G. F. Hrusa, D. Crowe 1998-5-8 14376 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg adjacent to shore of San Joaquin River. Comment
  CDA29554  Sonchus oleraceus M. K. Beyers 2009-11-16 268 Sacramento City of Sacramento: in the north eastern portion of the north lot at Sacramento City College. 0 Comment
  CDA30602  Sonchus oleraceus M. Beyers 2010-5-12 434 Solano On the corner of Halley Road and Wolfskill Road 33 Comment
  CDA30609  Sonchus oleraceus M. Beyers 2010-3-28 292 Alameda Berkeley. Along West Frontage Road (Interstate 80 Frontage Road). east of the Berkeley Marina. 3 Comment
  CDA32157  Sonchus oleraceus M. Beyers 2010-10-9 849 Sacramento .5 miles east of Courtland along Wilson Road. 1 Comment
  CDA34028  Sonchus oleraceus D. G. Kelch, Andrew Doran 2011-4-6 11 .087 Alameda Near Don Edward s National Wildlife Area. Comment
  CDA35405  Sonchus oleraceus G. F. Hrusa, M. Beyers 2011-6-8 18311 Santa Barbara Sierra Madre Mountains; San Rafael Wilderness. Sisquoc River canyon at Sycamore Camp. 614 Comment
  CDA42873  Sonchus oleraceus L. Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CDA7670  Sonchus oleraceus T. C. Fuller 1959-10-14 3271 Siskiyou Big Springs Park, Mt. Shasta City. 0 Comment
  CDA7871  Sonchus oleraceus M. Mulligan, J. Gregory, J. Rocks 2007-3-26 1679 San Diego Camp Pendleton Marine Corps Base, White Beach Training Area, ca. 0.8 mile south of 41 Area (Las Flores), ca. 1 mile northwest of Shingle Bluff, east of I-5. Comment
  CHSC102501  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By 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. 269 Comment
  CHSC103987  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On 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. 260 Comment
  CHSC107245  Sonchus oleraceus Lowell 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. 33 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
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  CHSC114665  Sonchus oleraceus M. K. Beyers 2009-11-16 Sacramento City of Sacramento: in the north eastern portion of the north lot at Sacramento City College. Comment
  CHSC114962  Sonchus oleraceus Lowell Ahart 2015-1-27 19923 Butte Along the west side of Virginia Street, northwest of the intersection of Hazel Street and Virginia Sreet, Gridley. 29 Comment
  CHSC115178  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte Gravel bar on the south side of the dry stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC116120  Sonchus oleraceus Lowell Ahart 2015-11-4 20612 Sutter Peach orchard, about 50 yards east of George Washington Blvd., about 1 1/8 mile south of the intersection of Highway 20 and George Washington Blvd., Yuba City. 18 Comment
  CHSC23344  Sonchus oleraceus Willis Ball 1975-3-2 468 Contra Costa Contra 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. 32 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
  CHSC38391  Sonchus oleraceus Vernon Oswald 1983-5-21 512 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC39200  Sonchus oleraceus M. S. Taylor 1982-12-26 5210 Merced Around edge of Rest Stop, e side of Interstate 5, on Merced-Stanislaus Co border, ca. 15 mi sw of Merced. Comment
  CHSC424  Sonchus oleraceus J. Turner 1930-5-14 Butte Chico Creek road. 76 Comment
  CHSC6086  Sonchus oleraceus B. Wilson 1968-4-17 153 Butte NE of Greenhouse, CSC campus. 59 Comment
  CHSC63240  Sonchus oleraceus Lowell Ahart 1994-3-30 7280 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC75065  Sonchus oleraceus Roger Thom 1987-5-26 22 Contra Costa 1100 block of Hillside Ave. Walnut Creek. Roadside. 36 Comment
  CHSC8152  Sonchus oleraceus K. Henegar 1969-5-15 82 Butte Cohasset Road, 1/2 m s of Chico Municipal airport; along w side of road. Comment
  CHSC8560  Sonchus oleraceus M. MacArthur 1968-6-12 165 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science bld., Chico State College campus. 60 Comment
  CHSC98404  Sonchus oleraceus LeRoy Gross; Laura Moore, Debby Zygielbaum, Ron Burchet 2000-6-8 236 Los Angeles Verdugo Mountains: Off La Tuna Canyon 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. 548 Comment
  GMDRC1121  Sonchus oleraceus J. Andre 2003-5-25 4048 San Bernardino Granite Mtns: Granite Mtns: Mouth of Budweiser Cyn, growing in wet sandy soil in streambed.. Elev. 3788 ft. 1155 Comment
  HSC104456  Sonchus oleraceus Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 25 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC26377  Sonchus oleraceus T. O. Osborne 1970-9-16 38 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC39802  Sonchus oleraceus Peter Sorensen 1976-6-11 Humboldt King Salmon Comment
  HSC52617  Sonchus oleraceus G. L. Clifton, Griswold 1979-6-19 5539 Del Norte Near Smith River, S Fork, close to the town of Gasquet. 38 Comment
  HSC91760  Sonchus oleraceus Susan H. Bicknell 1989-4-16 San Luis Obispo Montana de Oro State Park, MDO 1000 Comment
  HSC93285  Sonchus oleraceus F. Bowcutt 1987-5-26 816 Mendocino S of BLM's King Range Conservation Area, 0.5 air miles SW of Four Corners, at entrance sign to park along Needle Rock Rd. (County Rd. 435) 335 Comment
  IRVC19392  Sonchus oleraceus R. L. Allen 1983-2-12 A629 Orange Fullerton; Hillcrest Park, slope bordering E Valley View Drive. Southern Coastal Comment
  IRVC27130  Sonchus oleraceus Mark A. Elvin, Scott Boczkiewicz 2005-2-5 3945 San Diego W side of Otay Mtn; 1.5km SSE of Savage Dam (Otay Lake); N of County Prison; near tributary to Otay River, N of O'Neal Canyon. Peninsular Ranges, San Ysidro Mountains 183 Comment
  IRVC27824  Sonchus oleraceus Scott Boczkiewicz, Mark A. Elvin 2005-2-5 1001 San Diego W side of Otay Mtn; 1.5km SSE of Savage Dam (Otay Lake); N of County Prison; near tributary to Otay River, N of O'Neal Canyon. Peninsular Ranges, San Ysidro Mountains 183 Comment
  IRVC9106  Sonchus oleraceus B. Gittins 1963-3-22 70 Orange Orange Coast College Campus. Costa Mesa Comment
  IRVC920  Sonchus oleraceus L. Stilgenbauer 1965-4-15 Orange Corona del Mar, 339 Milford. Newport Beach Comment
  IRVC921  Sonchus oleraceus J. Schram 1965-5-3 Orange Corona del Mar, 564 Seaward Rd. Newport Beach Comment
  IRVC924  Sonchus oleraceus A. Adams 1965-5-2 Orange Newport Beach, Corona del Mar, Little Corona Beach. Southern Coastal Comment
  IRVC929  Sonchus oleraceus R. Salcido 1965-5-8 Orange Corona del Mar. Newport Beach Comment
  JEPS100168  Sonchus oleraceus G. Smick 2003-3-27 GAS 99 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS118037  Sonchus oleraceus Lowell 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 33 Comment
  JEPS118346  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  JEPS119796  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS124111  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS124161  Sonchus oleraceus Lowell Ahart 2015-11-4 20612 Sutter About 50 yards east of George Washington Blvd., about 1 1/8 mile south of the intersection of Highway 20 and George Washington Blvd., Yuba City. Comment
  JEPS124183  Sonchus oleraceus Lowell Ahart 2015-1-27 19923 Butte Northwest of intersection of Hazel Street and Virginia Street, Gridley. 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
  JEPS18665  Sonchus oleraceus Ernest C. Twisselmann 1954-11-9 1658 Kern Buena Vista Lake Bed Western San Joaquin Valley, Temblor Rsnge, Buena Vista Lake (Temblor Range, Western San Joaquin Valley) 94 Comment
  JEPS30414  Sonchus oleraceus Donald Kyhos 1959-1-4 59 -1 Los Angeles Whittier Comment
  JEPS30626  Sonchus oleraceus Peter H. Raven 1959-5-9 14165 Los Angeles Mulholland Hwy 1 mi w Las Virgenes Rd. (Malibu Creek drainage, Santa Monica Mountains); Santa Monica Mountains, Malibu Creek drainage 274 Comment
  JEPS30646  Sonchus oleraceus Peter H. Raven and Henry J. Thompson 1959-6-4 14346 Los Angeles Point Dume Santa Monica Mountains, Point Dume 12 Comment
  JEPS31260  Sonchus oleraceus Ernest C. Twisselmann 1962-10-20 7931 San Luis Obispo Dorothy Twisselmann Ranch Western San Joaquin Valley, Temblor Range, Dorothy Twisselma (Temblor Range, western San Joaquin Valley, eastern San Luis Obispo County) 670 Comment
  JEPS37524  Sonchus oleraceus W. L. Jepson 1916-4-16 6770 Kern Bakersfield Bakeresfield Comment
  JEPS58909  Sonchus oleraceus Javier Penalosa and J. T. Howell 1961-6-7 1646 Marin w Marin Country Day School (Tiburon Peninsula); Tiburon Peninsula 30 Comment
  JEPS77159  Sonchus oleraceus Robert M. Lloyd 1963-4-5 2307 Marin about 1 mi nw Tiburon (near housing tract) Comment
  JEPS84553  Sonchus oleraceus John W. Willoughby 1976-5-6 1668 Solano Mix Canyon Vaca Mountains, Mix Canyon 274 Comment
  JOTR29401  Sonchus oleraceus La Doux, Tasha, Mike Bell, Colleen Ely 2006-5-22 1478 San Bernardino Joshua Tree National Park. Willow Hole Comment
  JOTR30283  Sonchus oleraceus La Doux, Tasha, Alice Miller 2007-5-31 1779 Riverside Joshua Tree National Park. Stop 2: Cottonwood Springs/Oasis; in wet soil at oasis. 893 Comment
  JOTR30284  Sonchus oleraceus La Doux, Tasha, Alice Miller 2007-5-31 1779 Riverside Joshua Tree National Park. Stop 2: Cottonwood Springs/Oasis; in wet soil at oasis. 893 Comment
  JOTR30790  Sonchus oleraceus La Doux, Tasha, K. White, A. Holt, C. Ely, J. Van Warmerdam 2007-2-26 2097 Riverside Joshua Tree National Park. Eagle Mountains; Cottonwood Oasis 914 Comment
  JOTR31013  Sonchus oleraceus La Doux, Tasha, Maria Harding and Mark Wheeler 2010-6-15 1279 San Bernardino Joshua Tree National Park. Little San Bernardino Mountains; Wonderland of Rocks; above Keys Ranch by dam (Stop 1) Comment
  JOTR31031  Sonchus oleraceus La Doux, Tasha 2010-4-27 1535 San Bernardino Joshua Tree National Park. Oasis of Mara, Park Head Quarters, survey surrounding administrative buildings 597 Comment
  JOTR36220  Sonchus oleraceus La Doux, Tasha, M. Harding and M. Wheeler 2014-4-24 3473 San Bernardino Joshua Tree National Park. Little San Bernardino Mtns; Wonderland of Rocks; narrow, steep drainage with boulder walls and sandy bottom (Stop 5) 1273 Comment
  OBI15383  Sonchus oleraceus Betty Sheehan 1957-10-11 8 San Luis Obispo Cal Poly Campus, Science bldg Comment
  OBI15384  Sonchus oleraceus Jim Heaston 1955-10-13 33 San Luis Obispo Cal Poly, San Luis Obispo Comment
  OBI15385  Sonchus oleraceus Bob Everett 1964-2-16 2 San Luis Obispo Poly Cyn, Cal Poly, San Luis Obispo Comment
  OBI15386  Sonchus oleraceus Tracey & Viola Call, Viola Call 1962-4-8 2121 Riverside Rancho Rd. Corona 213 Comment
  OBI15389  Sonchus oleraceus Robert F. Hoover 1964-4-14 8704 San Luis Obispo San Luis Obispo Comment
  OBI25598  Sonchus oleraceus David J. Keil 1981-5-16 14710 San Luis Obispo Area around Arroyo de la Cruz near its crossing of hwy 1 Comment
  OBI28289  Sonchus oleraceus Rick Frelinger 1982-5-10 67 San Luis Obispo San Luis Crk in Reservoir Cyn, San Luis Obispo Comment
  OBI28776  Sonchus oleraceus David J. Keil, Melissa Luckow, Richard A. Pimentel, and Rhonda Riggins-Pimentel 1981-4-24 14509 San Luis Obispo Jctn of Shell Crk Rd and Calif hwy 58 S of Shandon Comment
  OBI30663  Sonchus oleraceus David J. Keil 1981-5-19 14735 San Luis Obispo Indian Knob. Upper slopes of Indian Knob Comment
  OBI31765  Sonchus oleraceus Smeltzer, Turnquist 1982-4-12 50 San Luis Obispo SE side of Laguna Lake park from the roadway over to base of hill Comment
  OBI4812  Sonchus oleraceus Mike Wemp 1972-3-29 38 San Luis Obispo About 1/2 mi NW of Montana de Oro state park campground 30 Comment
  OBI51350  Sonchus oleraceus Debora Guillot, Jan Barber, Jim Kilber, Sue Weis, Andrew Stackhouse 1993-7-15 5 .3 San Luis Obispo San Simeon State park. N central section of park Comment
  OBI51445  Sonchus oleraceus Larry Kelly 1991-7-1 586 Santa Cruz Soquel Demonstration State forest off of Highland Ave Comment
  OBI51495  Sonchus oleraceus Larry Kelly 1991-6-22 523 Santa Cruz Soquel Demonstration State forest off of Highland Ave Comment
  OBI51908  Sonchus oleraceus A. C. Sanders 1987-11-28 7548 San Bernardino Glen Helen Sheriff's Training Facility, lower Lytle Crk wash between Verdemont Ranch and Glen Helen Rehabilitation facility Comment
  OBI53965  Sonchus oleraceus Larry Kelly, David J. Keil 1988-10-1 282 San Luis Obispo Pismo marsh between Pismo State Beach campground and Grand Ave Comment
  OBI54646  Sonchus oleraceus David J. Keil, with Lynne Dee Oyler 1995-3-4 24546 Santa Barbara North base. along beach blvd. west of railroad tracks. Comment
  OBI5468  Sonchus oleraceus Sharon Jochums 1974-3-9 26 San Luis Obispo W of hwy 1 just S of Arroyo de la Cruz Comment
  OBI80661  Sonchus oleraceus David J. Keil 1992-1 22921 San Luis Obispo Laguna Lake City Park. Along Madonna road in grassy strip with lawn 170 Comment
  OBI81009  Sonchus oleraceus David J. Keil 2015-2-14 32594 San Luis Obispo Pismo Preserve. Vicinity of intersection of Thousand Hills Road with Price Canyon Road 25 Comment
  POM11349  Sonchus oleraceus F. L. Robinson 1921-3-17 10 Los Angeles Claremont, near the Greek [Theater] Comment
  POM155584  Sonchus oleraceus M. B. Dunkle 1928-4-11 1854 Los Angeles Santa Catalina Island. Near Isthmus. Comment
  POM155653  Sonchus oleraceus M. B. Dunkle 1928-5-13 1939 Los Angeles Santa Catalina Island. Coach road. Talus slope near Wishbone Loop Comment
  POM160622  Sonchus oleraceus Marcus E. Jones 1929-3-25 s.n. Santa Barbara Santa Cruz Island. Comment
  POM181428  Sonchus oleraceus I. L. Wiggins 1930-4-18 4608 Contra Costa Jersey Island. Comment
  POM201741  Sonchus oleraceus L. M. Booth 1932-5-12 1012 Orange Newport Bay. Comment
  POM202167  Sonchus oleraceus L. M. Booth 1932-6-15 1193 Orange Marsh border East of Huntington Beach. Comment
  POM202169  Sonchus oleraceus L. M. Booth 1932-7-23 1305 Orange Corona del Mar, Newport Beach Comment
  POM292654  Sonchus oleraceus Lyman Benson 1928-12-15 837 San Mateo Lake Searsville, Stanford, Santa Cruz, San Francisco Bay 152 Comment
  POM292655  Sonchus oleraceus Arthur L. Cohen 1934-2-26 56 Kern Bakersfield. Kern River Watershed. 122 Comment
  POM37304  Sonchus oleraceus Marcus E. Jones 1881-06 s.n. Santa Cruz Santa Cruz. Comment
  RSA0010443  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann, G. Kenney 2015-5-6 30144 San Diego Camp Pendleton: southeast portion of Base; Juliet Training Area; north of Engineer Hill Rd.; along dirt road in a canyon. 100 Comment
  RSA0013982  Sonchus oleraceus LeRoy Gross, Bart O'Brien 2013-4-3 5993 San Diego Oneonta Slough; Tijuana Slough National Wildlife Refuge. North of the mouth of the Tijuana River., Started at the end of seacoast Drive, Imperial Beach near 32.56659N 117.13248W south a short distance. 3 Comment
  RSA0021711  Sonchus oleraceus Duncan S. Bell, Caitlin Elam 2013-6-24 5261 Los Angeles Sheep Mountain Wilderness; East Fork of the San Gabriel River, below Airplane Flat, behind the Bridge To Nowhere. 870 Comment
  RSA0036768  Sonchus oleraceus Toad 1981-3-3 0013 -81 Los Angeles 130 W. Grondahl, Covina. On NW corner of property. Comment
  RSA0054193  Sonchus oleraceus Richard G. Swinney 2010-4-23 12341 Los Angeles San Gabriel Moutains; lower Loop Canyon, 0.2-0.6 miles upstream from Verterans Park, below US Forest Sercive boundary. 549 Comment
  RSA0058909  Sonchus oleraceus LeRoy Gross, Joy England, Naomi S. Fraga 2015-5-6 7372 Ventura USC/Best Property; Off Pyle Road, south of Highway 126. Almost halfway between Santa Paula and Fillmore. 99 Comment
  RSA0058910  Sonchus oleraceus LeRoy Gross, Joy England, Naomi S. Fraga 2015-5-6 7371 Ventura USC/Best Property; Off Pyle Road, south of Highway 126. Almost halfway between Santa Paula and Fillmore. 99 Comment
  RSA0060392  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann, G. Kenney 2014-5-8 28314 San Diego Camp Pendleton: Training Area India: eastern portion of Base; along the Santa Margarita River just southwest of the De Luz Road crossing. 35 Comment
  RSA0060873  Sonchus oleraceus R. G. Swinney 2010-6-8 13214 Los Angeles Placerita Canyon Natural Area, east entrance (Walker Ranch) from Placerita Cyn. Rd. to canyon bottom and 0.2 miles to the west along Placerita Canyon Trail. 546 Comment
  RSA0064014  Sonchus oleraceus LeRoy Gross, Joy England 2015-4-29 7213 Ventura Bunn-Birrell Property; Survey the river bed at junction of S. Mountain Road and Converse Road. Southwest area of Santa Paula. 57 Comment
  RSA0065248  Sonchus oleraceus LeRoy Gross, Joy England 2015-3-26 6874 Ventura Villeneuva property; Along the River and lower part of South Mountain, east of river. Started at the end of Mission Rock Road. Between Saticoy and Santa Paula. 56 Comment
  RSA0065948  Sonchus oleraceus LeRoy Gross, Duncan S. Bell, Nick J. Jensen 2015-3-17 6731 Ventura Ormond Beach at end of McWane Blvd., west of Arcturus Ave. South of Port Hueneme, Oxnard. 3 Comment
  RSA0065996  Sonchus oleraceus Mary A. Hawke, J. Gregory, L. Aerne 2008-3-5 112 San Diego Dehesa; Fish & Wildlife Refuge; 0.18 mi E of intersection Willow Glen Road and Dehesa Road; just N of Singing Hills Golf Course. Square Q14. 803 Comment
  RSA0069453  Sonchus oleraceus LeRoy Gross, Pam DeVries, Otto Gasser 2015-4-16 7140 Ventura Aflalo Property. Entered at east end of property, from the south side of the river bed, at end of San Cayetano Street. Fillmore. 106 Comment
  RSA0069876  Sonchus oleraceus R. G. Swinney 2010-3-24 12091 Los Angeles Lopez Canyon above Pacoima, 1.7 miles west of Kagel Cyn. Road on west side of Lopez Canyon Rd. 463 Comment
  RSA0080653  Sonchus oleraceus R. G. Swinney 2010-5-29 13015 Los Angeles May Canyon Truck Trail (FSRd. 3N54) crossing of W. Fork May Canyon, north side of rd., c. 1.3 air miles NNW of road's entrance at Veterans Memorial Park in Sylmar. 939 Comment
  RSA0085549  Sonchus oleraceus R. G. Swinney 2010-4-21 12326 Los Angeles Pacoima, 0.4-0.6 miles north of Gavina Ave. in Pacoima Wash. 457 Comment
  RSA0114808  Sonchus oleraceus Richard G. Swinney 2011-10-25 15895 Los Angeles San Gabriel Mountains: south end of Coldbrook Campground, along Coldbrook Cr., from 50 meters south to 100 meters north of Hwy 39. 1006 Comment
  RSA0119941  Sonchus oleraceus R. G. Swinney 2014-5-27 16668 Los Angeles San 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., C. 200 m. due n. of Church of the Open Door and n. and e. of Hook Cyn. debris basin. 445 Comment
  RSA118900  Sonchus oleraceus L. S. Rose 1957-3-23 57039 San Francisco 876 Francisco Street, N. slope of Russian Hill. Comment
  RSA127961  Sonchus oleraceus H. J. Thompson, P. H. Raven 1959-6-4 14346 Los Angeles Point Dume. 15 Comment
  RSA176778  Sonchus oleraceus John H. Thomas 1963-5-20 10112 San Mateo Ano Nuevo Island, 1/2 mile off shore and about 20 miles NW of Santa Cruz. Comment
  RSA183319  Sonchus oleraceus P. H. Raven, Henry J. Thompson 1966-4-24 20705 Ventura San Nicolas Island, sandy slopes just above ocean, Seal Beach, northwest end of island Comment
  RSA184147  Sonchus oleraceus I. L. Wiggins 1966-5-25 20668 Orange Parkway along south side of Nutwood Lane, margin of CSCF campus, Fullerton. Comment
  RSA18425  Sonchus oleraceus C. B. Wolf 1927-7-12 583 San Francisco San Francisco. Comment
  RSA185754  Sonchus oleraceus John H. Thomas 1950-2-26 1275 Santa Cruz Along coast at western end of Cliff Drive, Santa Cruz. Comment
  RSA187930B  Sonchus oleraceus R. F. Thorne 1966-4-7 35960 Los Angeles Cherry Valley, Santa Catalina Island. 61 Comment
  RSA187956  Sonchus oleraceus R. F. Thorne 1966-4-28 36229 -a Los Angeles Santa Catalina Island: W-facing rocky bank near upper end Renton Mine road in Pebbly Beach Canyon. 259 Comment
  RSA188044  Sonchus oleraceus R. F. Thorne 1966-4-5 35846 Los Angeles Santa Catalina Island, Cottonwood Canyon. 107 Comment
  RSA188045  Sonchus oleraceus R. F. Thorne 1966-4-4 35790 Los Angeles Santa Catalina Island: Bird Rock, N of Isthmus Cove. 8 Comment
  RSA192182  Sonchus oleraceus E. W. Lathrop 1960-6-8 4914 Riverside 14 miles west of Murrieta Comment
  RSA199101  Sonchus oleraceus R. F. Thorne 1968-4-28 37495 Santa Barbara Santa Barbara Island, north-facing slope along path above Landing Cove 30 Comment
  RSA199123  Sonchus oleraceus R. F. Thorne 1968-4-27 37521 Santa Barbara Santa Barbara Island, lower part of Cave Canyon 15 Comment
  RSA199147  Sonchus oleraceus R. F. Thorne 1968-4-27 37556 Santa Barbara Santa Barbara Island. Graveyard Canyon. 30 Comment
  RSA201918  Sonchus oleraceus Ronald E. Foreman, Evan C. Evans, III, Samuel C. Rainey 25 Santa Barbara San Nicolas Island, on plateau above Sand Dune Canyon, near Mesa top 274 Comment
  RSA223673  Sonchus oleraceus J. T. Howell 1964-6-29 40767 San Luis Obispo Cambria Comment
  RSA2342  Sonchus oleraceus J. W. Blankinship 1923-4-18 s.n. Lake Kelseyville. Comment
  RSA234497  Sonchus oleraceus James Henrickson 1970-7-24 4954 Orange 1.5 miles NW of Huntington Beach, along border of Bolsa Chica Salt Marsh at SW end of Huntington Beach Mesa. 8 Comment
  RSA234633  Sonchus oleraceus R. F. Thorne 1970-3-6 39408 Los Angeles Indian Rock in Emerald Bay, Santa Catalina Island. 15 Comment
  RSA239470  Sonchus oleraceus E. R. Blakley 1961-4-22 4099 Santa Barbara San Nicolas Island, Mesa south of the housing area 122 Comment
Read comments
Jul 8 2014
  RSA269894  Sonchus oleraceus B. A. Prigge 1973-6-15 1139 San Bernardino Clark Mountain Range, Pachalka Spring, 5.9 miles NW of Mt. Pass 1494 Comment
  RSA286943  Sonchus oleraceus R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-28 48825 Santa Barbara Santa Rosa Island. Box Canyon. SW of SE Anchorage 76 Comment
  RSA286945  Sonchus oleraceus R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-30 48745 -b Santa Barbara Santa Rosa Island, Canada Lobos, along weedy stream side 23 Comment
  RSA286993  Sonchus oleraceus R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-28 48956 Santa Barbara Santa Rosa Island: E end, S of Beechers Bay, W of Southeast Anchorage Comment
  RSA289121  Sonchus oleraceus R. M. Beauchamp, H. A. Wilis 1978-6-29 s.n. Santa Barbara San Nicolas Island 23 Comment
  RSA300138  Sonchus oleraceus J. T. Howell 1976-5-16 51630 Kern Delano. 98 Comment
  RSA306785  Sonchus oleraceus R. F. Thorne, C. W. Tilforth, Bob Given 1979-5-1 52744 Santa Barbara San Miguel Island, lake bed near airstrip on west side of island 122 Comment
  RSA306821  Sonchus oleraceus R. F. Thorne, C. W. Tilforth, Bob Given 1979-4-30 52652 Santa Barbara San Miguel Island, above and west of Ranger Station i north-trending canyon 122 Comment
  RSA332433  Sonchus oleraceus R. F. Thorne 1984-5-4 58332 Santa Barbara Santa Cruz Island. Behind Prisoners'Harbor Camp. Comment
  RSA355914  Sonchus oleraceus R. F. Thorne 1975-9-4 47386 Los Angeles Santa Catalina Island: Fisherman's Cove; campus of USC Marine Science Center. Comment
  RSA38980  Sonchus oleraceus E. A. Purer 1932-3-29 2710 San Diego Silver Strand. Comment
  RSA466265B  Sonchus oleraceus A. C. Sanders 1987-11-28 7430 San Bernardino Glen Helen Sheriff's Training Facility, Lower Lytle Creek Wash betw Verdemont Ranch and Glen Helen Rehabilitation Facility. 518 Comment
  RSA474096  Sonchus oleraceus Gary D. Wallace, R. F. Thorne, Mark Hoefs, D. Tilforth, B. Given 1979-4-3 1591 Ventura San Nicolas Island, level ground near Naval Airfield hangers 159 Comment
  RSA474099  Sonchus oleraceus Dorothy G. Nichols 1940-4-6 6 Alameda KRE pond, foot of Ashby Avenue, Berkeley. 0 Comment
  RSA474100  Sonchus oleraceus M. B. Dunkle 1931-7-18 2511 Alameda Strawberry Canyon, Berkeley; San Francisco Bay [region]. Comment
  RSA474107  Sonchus oleraceus M. B. Dunkle 1928-10-7 2013 Los Angeles Santa Catalina Island. Descanso Canyon. 244 Comment
  RSA474108  Sonchus oleraceus F. R. Fosberg 1931-4-12 S- 4574 Los Angeles Near Jewfish Point, Santa Catalina Island. 3 Comment
  RSA474109  Sonchus oleraceus F. R. Fosberg 1931-4-1 S- 4437 Los Angeles Hamilton canyon, near Avalon, Santa Catalina Island, 70 Comment
  RSA474110  Sonchus oleraceus M. B. Dunkle 1931-4-22 2453 Los Angeles Avalon Canyon, Santa Catalina Island. Comment
  RSA474113  Sonchus oleraceus M. B. Dunkle 1937-8-5 5156 Mendocino Pothandle Creek. Comment
  RSA474115  Sonchus oleraceus M. B. Dunkle 1933-2-18 3006 San Diego Del Mar. 6 Comment
  RSA474117  Sonchus oleraceus M. B. Dunkle 1939-8-10 8521 Santa Barbara Santa Rosa Island. Ranch Canyon. Comment
  RSA474118  Sonchus oleraceus M. B. Dunkle 1939-8-13 8589 Santa Barbara Santa Cruz Island. Prisoner's Harbor. Comment
  RSA474121  Sonchus oleraceus F. H. Elmore 1938-8-12 304 Santa Barbara Santa Barbara Island. Comment
  RSA474124  Sonchus oleraceus M. B. Dunkle 1940-8-20 7649 Ventura Anacapa Island. Seepage cliff. Spring cave. Comment
  RSA474126  Sonchus oleraceus M. B. Dunkle 1939-7-22 8306 Ventura Coral Harbor, San Nicolas Island Comment
  RSA474127  Sonchus oleraceus Gary D. Wallace, R. F. Thorne, Mark Hoefs, D. Tilforth, B. Given 1979-4-3 1640 Ventura San Nicolas Island, near water tank seepage area northwest end of mesa Comment
  RSA474129  Sonchus oleraceus H. M. Pollard 1970-4-7 s.n. Ventura Flood-plain of Ventura River north of and near Baldwin Road (RT. 150) crossing Comment
  RSA474132  Sonchus oleraceus H. M. Pollard 1970-5-26 s.n. Ventura Shaded gully on Casitas Pass Road, about 1 mile north of Ventura River bridge, Foster Park Comment
  RSA502896  Sonchus oleraceus Ed LaRue 1989-3-30 s.n. Riverside Rancho California area, ca. 4 miles W of Temecula,with Ave. del Oro as the N boundary. 381 Comment
  RSA533523  Sonchus oleraceus Timothy S. Ross 1991-3-9 4172 Los Angeles Whittier Hills (Puente Hills, pro parte): seepage ca 300 ft SW of Colima Rd x Camino del Sur. 213 Comment
  RSA559452  Sonchus oleraceus Steve Boyd, Timothy S. Ross 1992-5-5 7216 Riverside Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Oak Flats area east of Verdugo Potrero. 732 Comment
  RSA594990  Sonchus oleraceus Mark Hoefs, R. F. Thorne 1996-4-6 2633 Los Angeles Santa Catalina Island. End of Renton Mine Road. 268 Comment
Read comments
Nov 20 2009
  RSA599685  Sonchus oleraceus Steve Boyd, Lauren Raz 1997-5-6 9704 Los Angeles Liebre Mountains region: San Francisquito Canyon, west side of canyon at eastern end of Red Mountain ridge system, just north of confluence with Bee Canyon and 1.5 miles by road south of the Clearwater Canyon Truck Trail 6N24. 610 Comment
  RSA600754  Sonchus oleraceus L. C. Wheeler 1967-6-16 9848 Los Angeles San Gabriel Mountains : Sunset Ridge by Millard Canyon; N of Coulter Reservoir. 640 Comment
  RSA608872  Sonchus oleraceus L. C. Wheeler 1968-9-21 s.n. Los Angeles San Gabriel Mountains: Aliso Canyon, Blum Ranch. 884 Comment
  RSA614168  Sonchus oleraceus D. L. Banks 1997-2-23 1309 Riverside NW Palomar Mountains, Agua Tibia Mountains: Pechanga Indian Reservation, north of Pechanga Road, south of Anza Road, just NNW of San Gabriel Church in the area burned by the 1996 Temecula Fire. 402 Comment
  RSA614674  Sonchus oleraceus Scott D. White 1993-3-12 1177 Riverside Near Winchester. Comment
  RSA614889  Sonchus oleraceus Scott D. White, Brian Leatherman 1997-4-3 4873 Fresno Kings River area: E of Centerville, just S of St. Hwy 180 (Kings Cyn Rd) at gravel quarry. 107 Comment
  RSA629052  Sonchus oleraceus Valerie L. Soza, Laura Moore 1999-6-30 602 Los Angeles San Gabriel Mountains: Upper Winter Creek Trail. 853 Comment
  RSA637502  Sonchus oleraceus Valerie L. Soza, LeRoy Gross 1999-5-10 451 Los Angeles San Gabriel Mountains: Foothills above Glendora, west of Colby Trail, at end of Loraine Avenue. 378 Comment
  RSA638813  Sonchus oleraceus Valerie L. Soza, Laura Moore 1999-6-30 589 Los Angeles San Gabriel Mountains: Upper Winter Creek Trail. 853 Comment
  RSA645616  Sonchus oleraceus Scott D. White, Steve Ogg 1994-4-21 1991 Riverside Millard Canyon, near stream crossing w/ USFS Road 2S05, +/-4 miles south of Bear Wallow Spring. 915 Comment
  RSA647870  Sonchus oleraceus LeRoy Gross, Laura Moore, Debby Zygielbaum, Ron Burchet 2000-6-8 236 Los Angeles Verdugo Mountains: Off La Tuna Canyon Road, on Santa Monica Mountains Conservancy Land. 548 Comment
  RSA651185  Sonchus oleraceus Richard L. Herrin 1948-5-13 s.n. Los Angeles Burbank. Corner of Olive Ave. & Kenneth Road Comment
  RSA653178  Sonchus oleraceus David Barrios 1991-5-8 29 Orange 1500 ft. Northwest of Fairmont Ave and Quail cir. 365 Comment
  RSA657026  Sonchus oleraceus Joseph M. Keefe 2001-1-19 30903 Los Angeles on 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. 262 Comment
  RSA657284  Sonchus oleraceus Greg Burchett, Lisa Kegarice, Curtis Clark 1992-5-26 92 -14 Los Angeles Santa Clara River west from I-5 to trailer park. Comment
  RSA670984  Sonchus oleraceus Joseph M. Keefe 2001-1-19 30917 Los Angeles Roadside along Sholl Canyon Road, 3 meters north of beginning of the Eagle Rock Park Path, 200 meters north of Figueroa Street, Eagle Rock. 280 Comment
  RSA674660  Sonchus oleraceus Scott D. White 2000-8-5 8116 Riverside San Jacinto Mountains: Near Mountain Center. Unnamed ephemeral drainage (tributary to S Fork, San Jacinto River). 1402 Comment
  RSA675939  Sonchus oleraceus LeRoy Gross 2003-3-9 802 Los Angeles Southwest 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 Canyon) to the north,, and Glenoak Blvd. (Scholl Canyon) to the south. 354 Comment
  RSA678347  Sonchus oleraceus Steve Boyd, Amber Maurice, Pesach Lubinsky, Leland Lubinsky 2003-4-17 10459 Riverside East side of mouth of Chino Canyon, at upper edge of bajada and lower rocky slope of mountains, along road to Palm Springs Tram Station. Comment
  RSA679271  Sonchus oleraceus Valerie L. Soza, LeRoy Gross 2001-5-14 1215 Los Angeles Santa Anita 1999 Fire area, above Santa Anita Canyon, ca. 0.7 mile west of the Santa Anita Dam. 762 Comment
  RSA704741  Sonchus oleraceus Sarah J. De Groot, J. Mark Porter 2003-3-1 1062 San Bernardino Whipple Mountains: Bass Point, along Parker Dam road. 107 Comment
  RSA705558  Sonchus oleraceus Sarah J. De Groot, Angela Gatto, Chris Stevenson, Constance Baldwin 2003-4-19 2351 San Bernardino Whipple Mts: Canyon on NE side of mountains, off powerline road. 287 Comment
  RSA707075  Sonchus oleraceus Sarah J. De Groot, Krina De Groot, Leland Lubinsky, Linda Lee Worlow 2004-3-17 3772 San Bernardino WHIPPLE MOUNTAINS: Whipple Wash, ~2.5 hr. walk upstream from powerline road. 316 Comment
  RSA708070  Sonchus oleraceus Scott D. White, Angelia Carey 2004-4-16 10175 Riverside San Jacinto Mountain foothills: Indian Creek and adjacent slopes. 549 Comment
  RSA708953  Sonchus oleraceus A. C. Sanders 2005-6-24 31201 San Diego South Coast: San Dieguito Lagoon Ecological Reserve (DFG), north edge of reserve along Palm Lane (closed/abandoned) east of San Dieguito Dr. near old airport site. 0 Comment
  RSA711548  Sonchus oleraceus LeRoy Gross, Naomi Fraga, Aydee Virgen, Tim Thibault 2005-4-5 1825 San Diego Cuyamaca-Laguna Mountains region: West, southwest side of Viejas Mountain, at base of mountain. Just off West Boundary Truck Trail, just at the end of Anderson Road. Southwest side of the Cuyamaca Mountains. 795 Comment
  RSA714891  Sonchus oleraceus Sarah J. De Groot 2004-3-29 3933 San Bernardino Whipple Mountains: Copper Basin reservoir, ~NE side of lake. MWD property. 302 Comment
  RSA715871  Sonchus oleraceus Sarah J. De Groot, J. Mark Porter 2003-3-18 1688 San Bernardino Whipple Mountains: Tamarisk grove along Havasu Palms road. 195 Comment
  RSA730994  Sonchus oleraceus Fred M. Roberts 2006-11-15 6468 Orange Santa Ana Cyn., Santa Ana River, north bank, 1.1 km ENE Imperial Hwy crossing. 85 Comment
  RSA731781  Sonchus oleraceus J. P. Rebman, Jim Rocks, Karen Mabb 2008-2-26 14126 San Diego Camp Pendleton Marine Corps Base: Training Area Romeo 2 in the northwestern portion of base; coastal side of San Onofre Mountain, along Sky Rd towards the towers on top of San Onofre Mountain. 200 Comment
  RSA732175  Sonchus oleraceus A. C. Sanders, Fred M. Roberts 2008-3-25 34545 Orange Peninsular Range; Santa Ana Mtns.: Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  RSA733222  Sonchus oleraceus Melvin M. Sweet 2007-5-10 416 San Diego City of San Diego; 0.2 mi NE of inters. of Eastgate Mall and Genessee Ave, 1.6 mi SE of inters. of I-5 and I-805. Near top of canyon running form [from] Eastgate Mall to Roselle St. 101 Comment
  RSA737537  Sonchus oleraceus Fred M. Roberts 2008-3-12 6725 Orange Dana Point: Dana Point Headlands CNLM Preserve, western side, c.a. 0.8 km W Marine Institute (Dana Point Harbor). 50 Comment
  RSA742439  Sonchus oleraceus R. G. Swinney 2008-11-7 9777 San Bernardino Glen Helen Regional Park, marsh to the west of the fishing lakes 610 Comment
  RSA770873  Sonchus oleraceus R. F. Thorne 1965-5-10 34507 Los Angeles Near upper end of Gallagher Canyon, Santa Catalina Island. 427 Comment
  RSA772967  Sonchus oleraceus Orlando Mistretta, Duncan S. Bell, Jill Beckman, J. D. England, Katie Kane, Jamie Hall, Chris McDonald, Lucila Reccia 2010-4-12 4776 Riverside San Bernardino Mountains region: Whitewater Cyn. Along Whitewater River drainage and adjacent slopes below Whitewater Visitor Center (Whitewater Trout Farm). 609 Comment
  RSA793260  Sonchus oleraceus R. F. Thorne 1984-1 s.n. Orange Newport Back Bay Comment
  RSA798394  Sonchus oleraceus J. Barth 2010-2-5 897 San Diego City of San Diego; edge of San Diego Bay at Shelter Island Yacht Basin; corner of Talbot Street and Anchorage Lane. 10 Comment
  SBBG100769  Sonchus oleraceus W. L. Halvorson 1977-3-29 77 -208 San Diego Oceanside Comment
  SBBG102143  Sonchus oleraceus M. Daily 1979-7-28 139 Ventura NW part of the island; ca. the water tank on the way to Red Eye 152 Comment
  SBBG102145  Sonchus oleraceus M. Daily 1979-7-28 149 Ventura Celery Cyn Comment
  SBBG102212  Sonchus oleraceus M. Daily 1982-3-6 SR 443 Santa Barbara cyn below mess hall, main ranch Comment
  SBBG102213  Sonchus oleraceus M. Daily 1979-5-6 SR 196 Santa Barbara Lobos Cyn Comment
  SBBG108436  Sonchus oleraceus N. Meng 1967-5-22 402 Kern China Lake, S side of telephone building Comment
  SBBG10995  Sonchus oleraceus E. R. Blakley 1960-4-9 3169 Santa Barbara head of W fork of Windmill Cyn 335 Comment
  SBBG111188  Sonchus oleraceus E. Painter, E. Neese 1996-8-30 HL 2977 Monterey former site of Jolon Village Store, ca. 0.1 km SW of jct of Mission Crk and Jolon Rds, ca. 0.4 km W of Jolon Crk, ca. 2.5 km N of San Antonio River; Ft Hunter Liggett 295 Comment
  SBBG11329  Sonchus oleraceus E. R. Blakley 1961-4-30 4261 Santa Barbara Willow Cyn 0.6 mi SE of the old ranch house 121 Comment
  SBBG118337  Sonchus oleraceus D. C. Estrella 2003-4-25 147 San Diego W of Woodward Rd, near intersection with Propagation Rd, ca. 500 ft N of crossroads; Pt Loma Naval Facility 33 Comment
  SBBG124387  Sonchus oleraceus R. Burgess, P. Munro 1999-11-26 3671 Ventura 221 Juneau Place, El Rio area; Oxnard 25 Comment
  SBBG124696  Sonchus oleraceus R. Burgess, P. Munro 2001-3-23 4418 Ventura San Buenaventura St Beach, sandy flat S of Lifeguard Tower; Ventura 3 Comment
  SBBG12614  Sonchus oleraceus P. H. Raven 1962-4-9 17139 Los Angeles near barracks, Wilson Cove 60 Comment
  SBBG126870  Sonchus oleraceus S. A. Junak 1995-7-21 SM 6072 Santa Barbara N side of Lester Ranch airstrip 182 Comment
  SBBG129247  Sonchus oleraceus K. Danielsen, B. Halverson 1987-4-9 Ventura W end of Island 152 Comment
  SBBG131200  Sonchus oleraceus S. A. Junak, E. Philbrick, R. Philbrick 1980-5-7 WA 138 Ventura upper W fork of Summit Cyn 167 Comment
  SBBG13282  Sonchus oleraceus M. A. Piehl, P. H. Raven 1962-6-9 62358 Los Angeles China Pt, S of lighthouse 3 Comment
  SBBG13360  Sonchus oleraceus E. R. Blakley 1962-3-31 4907 Ventura flat area near the top and center of island 91 Comment
  SBBG13514  Sonchus oleraceus E. R. Blakley 1961-5-18 4386 Ventura large cyn on N side of highest peak 91 Comment
  SBBG16070  Sonchus oleraceus E. C. Twisselmann 1962-10-20 7931 San Luis Obispo Dorothy Twisselmann Ranch 670 Comment
  SBBG17704  Sonchus oleraceus E. R. Blakley 1963-5-23 5868 Santa Barbara W side of Cuyler Harbor 106 Comment
  SBBG17922  Sonchus oleraceus E. R. Blakley 1963-5-4 5630 Santa Barbara mouth of Cave Cyn, E side of island 9 Comment
  SBBG20968  Sonchus oleraceus H. M. Pollard 1964-4-25 Ventura San Antonio Crk Rd, near Royal Oaks Dairy; Ojai Comment
  SBBG21453  Sonchus oleraceus M. A. Piehl 1963-5-5 63160 Santa Barbara mouth of Middle Cyn 45 Comment
  SBBG21516  Sonchus oleraceus M. A. Piehl 1963-5-12 63295 Ventura near Triangulation Pt Anacapa, E of "knife edge" near Fish Camp 83 Comment
  SBBG22619  Sonchus oleraceus R. N. Philbrick with R. E. Broder 1965-5-16 B 65 -1051 Santa Barbara ridge ca. 3 mi SW of Sandy Pt 182 Comment
  SBBG24686  Sonchus oleraceus P. H. Raven, H. J. Thompson 1966-4-23 20705 Ventura Seal Beach, NW end of island Comment
  SBBG28119  Sonchus oleraceus H. M. Pollard 1967-8-30 Santa Barbara Santa Barbara Harbor breakwater Comment
  SBBG29550  Sonchus oleraceus R. N. Philbrick 1968-3-18 B 68 -54 Santa Barbara Landing Cove area 15 Comment
  SBBG29552  Sonchus oleraceus R. N. Philbrick 1968-3-18 B 68 -43 Santa Barbara Landing Cove area 30 Comment
  SBBG31417  Sonchus oleraceus R. F. Thorne 1966-4-5 35846 Los Angeles Cottonwood Cyn 106 Comment
  SBBG32151  Sonchus oleraceus R. N. Philbrick with R. F. Thorne 1967-5-19 B 67 -237 Los Angeles S side of Little Harbor Comment
  SBBG32632  Sonchus oleraceus R. N. Philbrick 1968-3-22 B 68 -108 Santa Barbara just E of old ranch site and ENE of airstrip 152 Comment
  SBBG32633  Sonchus oleraceus R. N. Philbrick 1968-3-22 B 68 -125 Santa Barbara middle part of trail from Cuyler Harbor to old ranch site 76 Comment
  SBBG32655  Sonchus oleraceus R. N. Philbrick with D. W. Ricker 1967-3-18 B 67 -10 Ventura lower trail, NE of Camel Pk 15 Comment
  SBBG32660  Sonchus oleraceus R. N. Philbrick 1965-3-27 65 459 a Ventura Sheep Ranch, Eucalytpus Grove 22 Comment
  SBBG33758  Sonchus oleraceus R. N. Philbrick 1964-6-20 B 64 -211 Santa Barbara ca. 1 mi NW of Cardwell Pt 30 Comment
  SBBG35792  Sonchus oleraceus J. P. Broughton 1965-7-29 1159 Santa Barbara Sandyland slough, W of Carpinteria Comment
  SBBG37340  Sonchus oleraceus H. M. Pollard 1970-4-7 Ventura Ventura River, N of and near Baldwin Rd (St Hwy 150) crossing Comment
  SBBG40731  Sonchus oleraceus E. R. Blakley 1969-11-15 7020 Ventura Frenchman's Cove [Frenchys Cove] 15 Comment
  SBBG40797  Sonchus oleraceus H. M. Pollard 1958-10-30 Santa Barbara Via Bendita, Hope Ranch; Santa Barbara Comment
  SBBG42258  Sonchus oleraceus M. B. Dunkle 1939-7-22 8306 Ventura Corral Harbor Comment
  SBBG42262  Sonchus oleraceus M. B. Dunkle 1939-8-2 8421 Santa Barbara Cuyler Harbor Comment
  SBBG42264  Sonchus oleraceus M. B. Dunkle 1939-7-23 8330 Ventura Big Crk Cyn [Grand Cyn] Comment
  SBBG42293  Sonchus oleraceus M. B. Dunkle 1939-8-13 8589 Santa Barbara Prisoners Harbor Comment
  SBBG42303  Sonchus oleraceus M. B. Dunkle 1940-3-21 7450 Santa Barbara east slope Comment
  SBBG42305  Sonchus oleraceus M. B. Dunkle 1939-5-29 8131 Santa Barbara west side Comment
  SBBG43134  Sonchus oleraceus M. R. Benedict 1970-4-22 Ventura N of Coast Guard Compound, E part of east island Comment
  SBBG43141  Sonchus oleraceus M. R. Benedict 1970-4-22 Ventura NW of lighthouse, E part of island Comment
  SBBG46015  Sonchus oleraceus R. N. Philbrick 1972-3-17 B 72 -25 Santa Barbara San Miguel Hill, NPS transect 10b Comment
  SBBG46247  Sonchus oleraceus E. R. Blakley 1962-6-10 5259 Los Angeles near Wall 2 15 Comment
  SBBG47994  Sonchus oleraceus M. R. Benedict 1968-11-2 Santa Barbara Buena Vista Comment
  SBBG48678  Sonchus oleraceus R. N. Philbrick 1974-8-5 B 74 -146 Ventura just N of water tank building, old Coast Guard building Comment
  SBBG51707  Sonchus oleraceus R. N. Philbrick with D. M. Smith, A. Flinck 1965-2-1 B 65 -111 Santa Barbara Canada del Puerto 38 Comment
  SBBG51708  Sonchus oleraceus M. R. Benedict 1967-8-29 Santa Barbara W side of mouth of Horqueta Cyn, ca. 2 mi E of Laguna Harbor 3 Comment
  SBBG51808  Sonchus oleraceus M. R. Benedict 1968-3-21 Santa Barbara near S end of Christi beach Comment
  SBBG52604  Sonchus oleraceus R. Zembal 1977-5-21 Ventura field W of Laguna Rd and N of Beach Rd; Pacific Missile Test Center Comment
  SBBG53139  Sonchus oleraceus R. Pitman, M. Naughton 1977-6-4 Santa Barbara SW portion of Prince Island Comment
  SBBG54754  Sonchus oleraceus S. A. Junak with R. N. Philbrick 1982-4-23 MA 63 Ventura Lavatera Cove, near E end of island 15 Comment
  SBBG54917  Sonchus oleraceus M. C. Hochberg 1979-4-4 Santa Barbara N of upper Graveyard Cyn Comment
  SBBG55790  Sonchus oleraceus M. J. Edsall 1980-3-4 3 San Luis Obispo 1600 block of Fairview Ave 76 Comment
  SBBG57761  Sonchus oleraceus S. A. Junak 1998-4-22 6373 Santa Barbara SE side of Prince Island 30 Comment
  SBBG67922  Sonchus oleraceus R. Hoffmann 1925-5-7 Santa Barbara Carpinteria Comment
  SBBG67928  Sonchus oleraceus H. M. Pollard 1946-4-28 Ventura Ventura River Comment
  SBBG67931  Sonchus oleraceus M. N. Ackley -Dec-1928 1165 Los Angeles Eagle Rock 182 Comment
  SBBG79449  Sonchus oleraceus R. Hoffmann 1929-3-16 Ventura Anacapa Island Comment
  SBBG79450  Sonchus oleraceus L. G. Yates 1893-1 Santa Barbara Santa Cruz Island Comment
  SBBG79451  Sonchus oleraceus R. Bond 1939-4-16 368 Ventura Anacapa Island Comment
  SBBG79452  Sonchus oleraceus R. Hoffmann 1925-3-28 Santa Barbara Santa Cruz Island Comment
  SBBG79454  Sonchus oleraceus R. Hoffmann 1931-4-11 Santa Barbara main ranch Comment
  SBBG79458  Sonchus oleraceus R. Bond 1939-4-14 378 Santa Barbara Santa Barbara Island Comment
  SBBG86416  Sonchus oleraceus C. F. Smith 1943-11-25 401 Santa Barbara Mission Crk, Mission Cyn 182 Comment
  SBBG86614  Sonchus oleraceus T. L. Secrest 1964-4-20 Santa Barbara Los Olivos St and Castillo St; Santa Barbara Comment
  SBBG8851  Sonchus oleraceus C. F. Smith 1944-4-1 656 Santa Barbara Mission Crk, Santa Barbara Botanic Garden [natural; not planted] Comment
  SBBG89538  Sonchus oleraceus J. Adams 1965-7-17 364 a San Bernardino 652 S Cactus Ave, Rialto 365 Comment
  SBBG91660  Sonchus oleraceus S. A. Junak 1986-4-22 MA 101 Ventura N edge of terrace, W of Sea Arch Peninsula 60 Comment
  SBBG9211  Sonchus oleraceus E. R. Blakley 1959-4-24 2746 Ventura between boat dock and the village 60 Comment
  SBBG94285  Sonchus oleraceus T. Murphey, J. Vanderwier 1983-8-30 Santa Barbara N side of trail on the E slope of North Pk, just below summit Comment
  SBBG94720  Sonchus oleraceus J. DiVittorio 1986-5-27 3 Ventura overlooking strand E of Thousand Springs, N side of island Comment
  SBBG95256  Sonchus oleraceus M. B. Dunkle 1928-4-11 1854 Los Angeles near isthmus 15 Comment
  SBBG95334  Sonchus oleraceus C. F. Smith 1943-9-2 22 Santa Barbara near end of Cheltenham Rd, above Tunnel Rd, Mission Cyn Comment
  SBBG95403  Sonchus oleraceus M. B. Dunkle 1928-5-13 1939 Los Angeles near Wishbone Loop, Coach Rd 243 Comment
  SBBG95911  Sonchus oleraceus M. B. Dunkle 1939-5-29 8131 Santa Barbara west side Comment
  SBBG98063  Sonchus oleraceus T. Ross, O. Mistretta, M. Hammitt 1991-5-17 5151 Los Angeles beginning of Larkspur Cyn drainage, 1600 ft SE of Benchmark 924 at E end of the old airfield landing strip 249 Comment
  SD11595  Sonchus oleraceus Frank F. Gander 1935-6-15 221 San Diego Ocean Beach Comment
  SD124502  Sonchus oleraceus Barry Prigge 1986-3-14 6889 San Diego San Mateo Creek: South of San Clemente and upstream from I-5 ca. 0.5 miles. 35 Comment
  SD138158  Sonchus oleraceus John W. Brown 1995-4-15 MM 187 San Diego Northeaster portion of McGinty Mountain, dirt road from Sloan Canyon to The Mesa. Comment
  SD138160  Sonchus oleraceus John W. Brown 1995-4-15 MM 161 San Diego Northeastern portion of McGinty Mountain, dirt road from Sloan Canyon to The Mesa. SW corner of USGS 7.5 minute Alpine quadrangle. Comment
  SD138161  Sonchus oleraceus John W. Brown 1995-4-8 MM 129 San Diego Northeastern portion of McGinty Mountain,dirt road from Sloan Canyon to The Mesa. SW corner of USGS 7.5 minute Alpine quadrangle. Comment
  SD138186  Sonchus oleraceus John W. Brown 1994-4-17 MM 433 San Diego McGinty Mountain near Jamul; trail from Peg Leg Mine to peak. Comment
  SD152116  Sonchus oleraceus Jon Rebman, Oscar Solis, Karen Rich, Bob Lauri 2000-2-11 6171 San Diego San Diego Urban Canyons, North Park/Golden Hill: Cedar Ridge area, canyons 149 Comment
  SD152257  Sonchus oleraceus Jon P. Rebman 2000-5-2 6650 San Diego Miramar Training Area #2 East Side. 299 Comment
  SD153400  Sonchus oleraceus Jeannie Gregory 2003-4-26 51 San Diego Roland Reed's Mine on Pala Chief Mountain 395 Comment
  SD153401  Sonchus oleraceus Jeannie Gregory 2003-4-26 49 San Diego Roland Reed's Mine on Pala Chief Mountain 395 Comment
  SD154921  Sonchus oleraceus Gay Dorius 2004-4-5 21 San Diego San Diego, N. Clairemont, Clairemont Mesa Blvd. 11/2 blks. E. of Genesee, mesa top on S. side behind Boy's club 113 Comment
  SD156425  Sonchus oleraceus Jon P. Rebman 2004-1-18 9840 San Diego San Diego: Clairemont/Bay Park area: in yard at 3427 Mt. Laurence, 92117. South of Balboa Ave. and east of Morena Blvd. 61 Comment
  SD157029  Sonchus oleraceus Jerilyn Hirshberg 2004-6-6 692 San Diego Intersection of San Diego River and Ouandi Creek, rocky stream bed with moist crevices and pools 975 Comment
  SD157030  Sonchus oleraceus Emanuel Kauder 2004-4-24 9 San Diego Scripps Ranch 0.5 mi E and 1 mi S of intersect of Pomerado Rd and Beeler Canyon Rd on flat area just off disturbed dirt road bed Comment
  SD159520  Sonchus oleraceus Jon P. Rebman, J. Gregory 2003-4-15 8459 San Diego Crestridge Ecological Reserve: west of La Cresta between Alpine and El Cajon 455 Comment
  SD159763  Sonchus oleraceus Scott Snover 2004-4-14 60 San Diego North of Escondido, SE corner of W. Lilac and Circle R Drive 316 Comment
  SD159764  Sonchus oleraceus David Lawhead 2004-4-13 1 San Diego Agua Hedionda Lagoon - east end, Southeast of the City of Carlsbad 103 Comment
  SD160685  Sonchus oleraceus Jon P. Rebman 2002-5-14 8080 San Diego Viejas Mountain: North of Alpine, approx. 0.5 miles north of the water tanks on Anderson Truck Trail; east of the road along the main trail to the top 850 Comment
  SD160686  Sonchus oleraceus Jon P. Rebman 2002-8-7 8253 San Diego Kelley/Rebman Ranch at 565 Anderson Truck Trail on northwest side of Viejas Mountain: approx. 2 miles north of Victoria Road in Alpine 800 Comment
  SD161266  Sonchus oleraceus Joe Barth, Jeannie Gregory 2005-3-8 339 San Diego Chula Vista Wildlife Reserve in southeast San Diego Bay, sandy area south of west basin. (CVWR is accessed via electrical power plant and is a human made site constructed as mitigation for the adjacent J St. marina construction). 0 Comment
  SD161267  Sonchus oleraceus Nancy Nenow, Bob Vinton 2005-2-24 30 San Diego Allen Road canyon trail off Ft Stockton Dr. at Hickory St.near top of the canyon (path goes down into Mission Valley and ends at Hotel Circle South) ) 22 Comment
  SD161410  Sonchus oleraceus Jon P. Rebman, Jim Rocks 2005-2-10 10939 Imperial Little 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) 195 Comment
  SD163126  Sonchus oleraceus Jon P. Rebman, Jeannie Gregory 2003-5-29 9079 San Diego Rancho Jamul Ecological Reserve: west of Hwy. 94, south of Jamul & north of Otay Lakes Road; southwest part of reserve near Jamul Creek on an east-facing slope 259 Comment
  SD163519  Sonchus oleraceus Kerry W. Key 2005-4-16 80 San Diego San Diego, Carmel Valley. Distrubed area near drainage basin connecting Shaw Valley and Carmel Valley. 50 m west of Carmel Country Rd, near interection with Camino Vista Lujo. 29 Comment
  SD163808  Sonchus oleraceus MaryAnn Brooks-Gonyer 2005-2-15 63 San Diego Approximately 10 miles north of Escondido on western edge of Valley Center, Circle R Drive, where road takes turn to the north, approx 1 mile east of Old Highway 395 Comment
  SD163809  Sonchus oleraceus MaryAnn Brooks-Gonyer, Beverly Pecunia 2005-5-6 162 San Diego Approx. 7 miles north of Escondido on Champagne Blvd, about 1/10 mile south of Lawrence Welk Drive Comment
  SD164786  Sonchus oleraceus Andrew C. Sanders 2005-6-2 30404 San Diego Palomar Mtn., Plaisted Creek Ecological Reserve, NE of Rincon & Pauma Valley, between Plaisted Cr. and Hwy 76, SE lobe of reserve near residences abandoned in 1996 701 Comment
  SD165272  Sonchus oleraceus Nuri Pierce, Joe Barth, Chris Schlech & vols. from Helix E. S. 2004-8-28 56 San Diego Lakeside, East end of El Monte Road, El Capitan Reservoir, Upward from the dam Comment
  SD165273  Sonchus oleraceus Emanuel Kauder 2005-4-2 38 San Diego City of San Diego, Scripps Ranch, 0.5 miles East of Pomerado Rd on north side of Beeler Canyon Rd at the shoulder's edge. 11 Comment
  SD165760  Sonchus oleraceus Mark A. Elvin, Scott Boczkiewicz 2005-2-5 3945 San Diego W side of Otay Mtn; 1.5km SSE of Savage Dam (Otay Lake); N of County Prison; near tributary to Otay River, N of ONeal Canyon. 182 Comment
  SD166517  Sonchus oleraceus Jon P. Rebman, Jeannie Gregory 2004-5-11 10158 San Diego Sycuan Peak Ecological Reserve (California Dept. of Fish & Game): southeast of Dehesa, south of Loveland Reservoir on the lower north side of Sycuan Peak; Sweetwater River watershed in Sloane Canyon 284 Comment
  SD166883  Sonchus oleraceus Jon P. Rebman, J. Gregory & parabotany team 2004-8-20 10687 San Diego Lake Sutherland: north of Hwy. 78 between Ramona and Santa Ysabel; dry lakebed at southeast end of lake 605 Comment
  SD167755  Sonchus oleraceus Kerry W. Key 2005-4-10 61 San Diego San Diego, Del Mar Mesa. 0.5 km south of Highway 56. Ridge just south of man-made pond in Deer Canyon. 92 Comment
  SD167756  Sonchus oleraceus Larry Hendrickson, Kim Marsden 2003-10-20 205 San Diego Anza-Borrego Desert State Park, Sentenac Cienega just south of State Highway 78 and east of county road S-2 southside of alkali sink in disturbed area. Comment
  SD167757  Sonchus oleraceus Kerry W. Key 2005-4-10 60 San Diego San Diego, Del Mar Mesa. 0.5 km south of Highway 56. Ridge just south of man-made pond in Deer Canyon. 92 Comment
  SD169865  Sonchus oleraceus Robin Halford 2005-2-8 55 San Diego Approx 3 mi N of Borrego Springs, 536 Indian Head Ranch Rd, 1.5 mi N from intersection with Henderson Canyon Rd. 231 Comment
  SD169866  Sonchus oleraceus Char Glacy, Nancy Nenow 2005-3-21 61 San Diego Anza Borrego Desert State Park, just N of Palm Spring, ca. 5 mi SE of Agua Caliente Springs, ca.1 mi NE of Canebrake Residential Area/Canyon at S2. 267 Comment
  SD169867  Sonchus oleraceus Jeannie Gregory, Joe Barth 2005-6-11 1492 San Diego Alpine, Wright's Field Preserve, 1 mile S of Interstate 8 on Tavern Road; E of Joan MacQueen Middle School 573 Comment
  SD169868  Sonchus oleraceus Richard L. Breisch 2005-2-27 10 San Diego City of San Diego, Mission Bay Park, Least Tern nesting site at south end of Mariner's Way, near end of peninsula. 2 Comment
  SD170934  Sonchus oleraceus Jeremy Buegge 2005-1-22 1244 San Diego Lake Hodges, S of Escondido. SE section of lake, 0.5 mi SE of summit of Bernardo Mtn, 0.5 mi W of I-15. Very near high-water mark (lake recently filled). 146 Comment
  SD170935  Sonchus oleraceus Phillip Roullard 2005-6-10 74 San Diego Tijuana Slough National Wildlife Refuge, Rivermouth trail. 0.6 mi SWS of trailhead at intersection of 5th St and Iris Ave, just W of SW section of Imperial Beach Naval Air Station. 3 Comment
  SD170937  Sonchus oleraceus Joe Barth 2005-4-28 477 San Diego National City: vacant lot on NE corner of intersection of 9th St. and B Ave; behind (south of) 208 E. 8th St. (Appliance Parts Center). 7 Comment
  SD170939  Sonchus oleraceus Jeannie Gregory, Joe Barth 2005-2-5 1248 San Diego Alpine, Viejas Mountain, W slope, E of Anderson Truck Trail approx. 1.0 mile N of intersection with Victoria Dr. 733 Comment
  SD170940  Sonchus oleraceus Larry Hendrickson, L. Louise Jee 2005-4-27 540 San Diego Anza-Borrego Desert State Park. Grave Wash at the SE end of the Santa Rosa Mountains in California State Wilderness. Approx. 5.0 miles WSW of Imperial Co. Hwy 86 at the Grave Wash overpass bridge. 300 ft. west of County line/Park boundary. 167 Comment
  SD170941  Sonchus oleraceus Jeannie Gregory, Jon Rebman, Margie Mulligan, Gale Bustillos 2005-6-16 1519 San Diego Alpine, Viejas Mountain on S slope, I(c) mi N of the West Willows (exit 33) overpass on I 8, 1.5 m E of Victoria Drive. 935 Comment
  SD170942  Sonchus oleraceus Larry Hendrickson 2005-2-24 301 San Diego Anza-Borrego Desert State Park. South side of Coyote Mountain, north of Henderson Canyon Road in Coyote Creek watershed. 60 Comment
  SD171544  Sonchus oleraceus Jon P. Rebman, Norman Roberts 2005-4-22 11816 San Diego Anza-Borrego Desert State Park: Henderson Canyon, approx. 2 miles north of Borrego Springs; on southwest side of canyon 320 Comment
  SD172019  Sonchus oleraceus E. R. Blakley 1961-5-18 4386 Ventura West Anacapa Island; large canyon north side of highest peak on island. 91 Comment
  SD172772  Sonchus oleraceus MaryAnn Brooks-Gonyer, Beverly Pecunia 2005-6-10 328 San Diego Just north of Gopher Canyon Road, approx. 9 miles north of city of Escondido, about 1/2 mile west of intersection with I-15. Comment
  SD172773  Sonchus oleraceus Claude Edwards 2004-3-26 24 San Diego SW Otay Mesa. Mesa-top south of Finger Canyon, at the intersection of an E-W dirt road with a N-S cross-mesa road. ~1.0 mile S of inters of Route 905 & Caliente Ave, ~1.5 mile SW of Brown Field. 134 Comment
  SD172774  Sonchus oleraceus MaryAnn Brooks-Gonyer, Beverly Pecunia 2005-5-23 242 San Diego About 10 miles north of city of Escondido, east of Champagne Blvd, at intersection with Gopher Canyon Road. Comment
  SD174396  Sonchus oleraceus David Woelfel, Riley Woelfel 2005-10-14 73 San Diego Approx 1.5 miles north of Fallbrook, along Sandia Canyon Creek just north of the confluence with Santa Margarita River, 0.3 miles west of intersection of Rock Mountain Rd and Sandia Creek Dr. 89 Comment
  SD174397  Sonchus oleraceus Mike D. Angel, Max Angel 2005-11-25 303 San Diego City of San Diego in Urban Canyon just N of Mission Valley. Approx 1I(c) mi NE of junction of I-8 and SR-163, just W of Mission Center Road at NW terminus of Sevan Ct. Trail begins at end of cul-de-sac. 60 Comment
  SD174850  Sonchus oleraceus Scott Boczkiewicz, Mark A. Elvin 2005-2-5 1001 San Diego Peninsular Ranges, San Ysidro Mountains: west side of Otay Mountain; 1.5 km south-southeast of Savage Dam (Otay Lake); north of County Prison; near tributary to Otay River, north of O'Neal Canyon. 182 Comment
  SD175372  Sonchus oleraceus Jon P. Rebman, J. Gregory, M. Mulligan, & J. Barth 2005-8-13 12254 San Diego San Vicente Reservoir: North of Lakeside, east of Hwy. 67, northeast of intersection between Moreno Ave. and Vigilante Road; west side of reservoir in the second cove north of the boat landing 195 Comment
  SD175373  Sonchus oleraceus Jon P. Rebman, J. Gregory, K. Rich, Z. Principe 2006-4-27 12493 San Diego Monte Vista Ranch (owned by The Nature Conservancy): S of Ramona, NW of San Vicente Reservoir; S of San Vicente Road along Chuckwagon Road onto the Ranch; near the electric lines just N of Longs Gulch 347 Comment
  SD176377  Sonchus oleraceus Margaret R. Mulligan, Joe Barth 2005-7-26 1256 San Diego McGinty Mountain Ecological Reserve (California Fish & Game). SE of city El Cajon. SE of intersection of Willow Glen Dr and Hillsdale Rd, near old gravel pits in the Sweetwater River Floodplain. 116 Comment
  SD177288  Sonchus oleraceus Larry Hendrickson 2006-5-25 1582 San Diego Anza-Borrego Desert State Park. Grapevine Canyon, 0.3 km east of Angelina Spring where road climbs up above drainage on east side of road. 726 Comment
  SD177884  Sonchus oleraceus Jon P. Rebman, J. Gregory, K. Rich, M. Wall 2006-5-18 12727 San Diego Monte Vista Ranch (owned by The Nature Conservancy): S of Ramona, NW of San Vicente Reservoir; S of San Vicente Road along Chuckwagon Road onto the Ranch; western portion of Ranch, along riparian zone N of Daney Canyon 302 Comment
  SD177885  Sonchus oleraceus Jon P. Rebman, Michael Wall 2007-4-19 13075 San Diego Poser Mountain (Cleveland National Forest): NE of Alpine and Viejas Indian Reservation; N of Old Viejas Grade Road on the S-facing slope of the mountain 1029 Comment
  SD178736  Sonchus oleraceus Paul Beiley 2006-4-7 52 San Diego Riparian path in Louis A. Stelzer County Park, just S of Wildcat Canyon Rd. about I(c) mi. NE of its intersection with Willow Rd., Lakeside. Along Wildcat Canyon Creek about a half-mile W of Stelzer Summit. 136 Comment
  SD179786  Sonchus oleraceus Jon P. Rebman, J. Gregory, M. Mulligan & J. Rocks 2007-4-23 13191 San Diego Camp Pendleton Marine Corps Base: Santa Margarita Mountains, Echo Training Area, just east of Artillery Firing Range 40, northeast of Roblar Road, along road 790 Comment
  SD179787  Sonchus oleraceus Jon P. Rebman, J. Gregory and L. Aerne-Hains 2007-7-9 13694 San Diego Lake Henshaw: SE of East Grade Road and S of Henshaw Truck Trail, approx. 0.5 air miles NE of the dam; along the north shore of the Lake 815 Comment
  SD179788  Sonchus oleraceus Jon P. Rebman, Parabotanist team 2007-5-8 13444 San Diego Barrett Lake: just south of the dam, along Barrett Lake Road and the flume on the west side of the canyon 502 Comment
  SD182015  Sonchus oleraceus Beverly Pecunia 2006-5-12 98 San Diego NE of Escondido Oakvale Rd past the road to the South end of Lake Wohlford to first pull out. 458 Comment
  SD182956  Sonchus oleraceus Jon P. Rebman, J. Gregory, K. Rich, & P. Famolaro 2007-9-12 13872 San Diego Sweetwater Reservoir: east of National City and south of La Presa; canyon just below the dam on the west side of the reservoir 45 Comment
  SD182957  Sonchus oleraceus Jon P. Rebman, J. Gregory, K. Rich, & P. Famolaro 2007-9-12 13956 San Diego Sweetwater Reservoir: east of National City and south of La Presa; vicinity of wet marsh and meadow areas just northeast and upstream from the east end of the reservoir 71 Comment
  SD183782  Sonchus oleraceus Jan E. Maxted, Don Maxted 2006-5-8 229 San Diego Lyons Valley, N of the town of Dulzura, A| mi N of Lyons Peak summit, 1 mi E of inters of Lyons Valley Rd and Skyline Truck Trail. 839 Comment
  SD184236  Sonchus oleraceus Jon P. Rebman, Jim Rocks and Karen Mabb 2008-2-26 14067 San Diego Camp Pendleton Marine Corps Base: Training Area Romeo 1 in the northwestern portion of base; San Onofre Mountains, along Horno Canyon Road 220 Comment
  SD184237  Sonchus oleraceus Jon P. Rebman, Jim Rocks and Karen Mabb 2008-2-26 14126 San Diego Camp Pendleton Marine Corps Base: Training Area Romeo 2 in the northwestern portion of base; coastal side of San Onofre Mountains, along Skyline Road towards the towers on top of San Onofre Mountain 199 Comment
  SD184238  Sonchus oleraceus Jon P. Rebman, Michael Wall 2008-4-3 14363 San Diego Hellhole Canyon Open Space Preserve: east of Valley Center and northeast of Lake Wohlford; south-central portion of preserve, near old house foundation 202 Comment
  SD184681  Sonchus oleraceus Paul Beiley, Jeannie Gregory 2006-6-28 115 San Diego Flinn Springs, Flinn Springs County Park, 14787 Olde Hwy 80, 1 mi E of intersection with Lake Jennings Park Rd. 252 Comment
  SD184682  Sonchus oleraceus Judy Carlstrom 2006-5-30 174 San Diego Escondido. Riparian area west of Northwest Parking Lot in Jesmond Dene Park located on North Broadway. 231 Comment
  SD185006  Sonchus oleraceus Ian Cain, Stephanie Glenn 2007-2-16 629 San Diego San Diego, Cabrillo National Monument, southern tip of Point Loma, disturbed area next to road halfway between Herpetology Arrays 2 and 3 on Gatchell Road 56 Comment
  SD186692  Sonchus oleraceus Jon P. Rebman, Ziad Hussami 2008-4-21 14657 San Diego Hauser Wilderness: Cleveland National Forest; W of Morena Reservoir, at Bronco Flats just S of Skye Valley Road 995 Comment
  SD187256  Sonchus oleraceus Jon P. Rebman, M. Mulligan & J. Hirshberg 2008-5-30 15341 San Diego Hauser Wilderness: Cleveland National Forest; SW of Morena Reservoir and E of Barrett Lake, along the trail that follows Hauser Creek, west of the Marine Memorial 500 Comment
  SD187368  Sonchus oleraceus Scott D. White, Angelia Carey 2004-4-16 10175 Riverside Indian Creek and adjacent slopes. 548 Comment
  SD187758  Sonchus oleraceus Carolyn Martus 2006-7-3 298 San Diego Oceanside. Buena Vista Lagoon (western), on the north and east side of Coast Highway along the trail from the Buena Vista Audubon Nature Center. 7 Comment
  SD188788  Sonchus oleraceus Michael G Simpson, Shahan Derkarabetian 2006-5-2 2656 San Diego Iron Mountain area, Poway, along hiking trail NE of pond, 1 mile NNW of Iron Mtn peak, 1 mi NE of junction of Hwy 67 and Poway Road. 598 Comment
  SD188789  Sonchus oleraceus Michael G Simpson, Otay Mtn. team 2003-5-3 2407 San Diego Otay Mountain watershed, MinerAs canyon, ca. 0.6 miles north of Marron Road. 216 Comment
  SD190456  Sonchus oleraceus Jon P. Rebman, J. Rocks & M. Mulligan 2008-6-4 15499 San Diego Santa Margarita Mountains: Cleveland National Forest; east of the border with Camp Pendleton Marine Corps Base; along the forest service road that runs on the east side of the mountains 808 Comment
  SD190457 Image available Sonchus oleraceus Jon P. Rebman, M. Mulligan & D. Bieber 2008-6-25 15730 San Diego Camp Pendleton Marine Corps Base: south of Stagecoach Road and north of the airstrip along Vandegrift Blvd.; in the Santa Margarita River bed 20 Comment
  SD190977  Sonchus oleraceus Dick Schwenkmeyer 2007-5-25 299 San Diego San Diego, Mission Trails Regional Park, ca I(c) mi S of Highway 52 in Suycott Canyon, just west of North Mount Fortuna, 2I(c) mi W of intersection of West Hills Parkway and Mast Blvd. 213 Comment
  SD190979  Sonchus oleraceus Margaret R. Mulligan, J. Gregory, J. Rocks 2007-3-26 1679 San Diego Camp Pendleton Marine Corps Base, White Beach Training Area, ca. 0.8 mi S of 41 Area (Las Flores), ca. 1 mi NW of Shingle Bluff, E of I-5. 15 Comment
  SD190980  Sonchus oleraceus Margaret R. Mulligan, J. Rocks, J. Gregory 2007-3-15 1564 San Diego Camp Pendleton Marine Corps Base, Skull Canyon in the Uniform Training Area. 0.6 mi NW of I-5 at La Flores (41 Area). 10 Comment
  SD190981  Sonchus oleraceus Layla Aerne Hains, Margaret Mulligan 2006-6-7 112 San Diego Blossom Valley Preserve (Center for Natural Lands Management) ca. 3 mi NE of Lake Jennings and 0.5 mi NE of Quail Canyon Rd and Creek Hills Rd intersection 800 Comment
  SD191831  Sonchus oleraceus Jon Rebman, W. Schmidtmann & V. Marshall 2008-4-9 14468 Imperial Freeman 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 0 Comment
  SD192394  Sonchus oleraceus Fred Roberts 2006-7-6 6358 San Diego Oceanside: San Luis Rey River Valley, adjacent to SR76 at SE corner of SR76 and Loretta St., about 0.9km E Interstate 5. 7 Comment
  SD192397  Sonchus oleraceus Jim Rocks, M. Mulligan 2007-5-17 440 San Diego Camp Pendleton Marine Corps Base, NW section of Charlie Training Area, ca. 5 miles NE of Camp Talega (64 Area), ca. I(c) mi S of county line and ca. A| mi NW of White Oak Springs. 390 Comment
  SD192399  Sonchus oleraceus Victoria Marshall 2007-4-27 540 San Diego Ramona; Boulder Oaks County Park, approx 7.0 mi southwest of Ramona, accessed through private property from Mussey Grade Road; collection area approx 1.0 mi west of Mussey Grade Road road. 449 Comment
  SD192402  Sonchus oleraceus Victoria Marshall 2007-6-1 576 San Diego Blue Sky Ecological Reserve (Dept of Fish and Game and City of Poway), Poway; entrance to Blue Sky Reserve approx 0.6 mi north of the intersection of Espola and Lake Poway Roads and 0.25 mi south-east of intersection of Espola Rd. and Old Coach Rd. 199 Comment
  SD192403  Sonchus oleraceus Jeannie Gregory, Michael Wall, Allison Wall 2007-3-22 2174 San Diego Elfin Forest, Olivenhain Municipal Water Dist, S side of Harmony Grove Road along Escondido Creek, 4 mi SW of Escondido, 1A| mi W of junction Del Dios Hwy and West Via Rancho Pkwy 530 Comment
  SD193083  Sonchus oleraceus W. J. Schrenk 2007-11-28 82 San Diego Poway, in flower bed Comment
  SD193248  Sonchus oleraceus A. C. Sanders, Jennifer Jones 2005-6-22 31134 San Diego Buena Vista Lagoon Ecological Reserve, Carlsbad, south side of lagoon just east of he Carlsbad Blvd near Brown Park. Comment
  SD193645  Sonchus oleraceus Jeannie Gregory, J. Litchewski, B. Pecunia 2007-5-15 2476 San Diego Ramona, The Nature Conservancy, Ramona Grasslands Preserve, 2 mi W of Ramona Airport, I(c) NW of intersection of Highland Valley Road and Rangeland Road, just S of Santa Maria Creek 416 Comment
  SD193646  Sonchus oleraceus Margaret R. Mulligan, J. Gregory, J. Rocks 2007-4-17 1915 San Diego Camp Pendleton Marine Corps Base, Case Springs within Echo Training Area. Land surrounding southern pond, W of Case Springs Rd (Roblar Rd). 703 Comment
  SD193647  Sonchus oleraceus Margaret R. Mulligan, J. Gregory, S. Leininger 2007-4-9 1862 San Diego Camp Pendleton Marine Corps Base, Santa Margarita River, on North River Road ca. 3 miles NW of its intersection with Macs Road (accessed by Stuart Mesa). 9 Comment
  SD194926  Sonchus oleraceus Melvin M. Sweet 2007-5-10 416 San Diego City of San Diego; 0.2 mi NE of inters.of Eastgate Mall and Genesee Ave, 1.6 mi SE of inters.of I-5 and I-805. Near top of canyon running form Eastgate Mall to Roselle St. 100 Comment
  SD194927  Sonchus oleraceus Jeannie Gregory, E. Douglas, M. Mulligan, L. Aerne 2006-6-7 2084 San Diego Lakeside, Lindo Lake County Park, Lakeshore Drive, N shore between Vine St and Petite Drive; S shore of lake 121 Comment
  SD194928  Sonchus oleraceus Mike D. Angel 2006-4-21 383 San Diego City of San Diego in Urban Canyon just N of Mission Valley. Approx 1I(c) mi NE of junction of I-8 and SR-163, just W of the Mission Center Road and Sevan Court junction (where the access roads to power line towers are located.) 49 Comment
  SD196317  Sonchus oleraceus Melanie S. Johnson 2005-5-12 30 San Diego Otay, Lower Otay Lake, just N of Buschalaugh Cove, South of Otay Lakes Road, mesa located immediately South of Lower Otay Lake - MSCP Dudleya variegata, Bloomeria clevelandii, Vernal Pools monitoring site 49 Comment
  SD197202  Sonchus oleraceus Jon P. Rebman, M. Mulligan & M. Dinkins 2009-5-6 17382 San Diego Camp Pendleton Marine Corps Base: Alpha One Training Area in the northwestern portion of base; north of Basilone Road along San Juan Road and in the adjacent riverbed of Jardine Canyon 64 Comment
  SD197699  Sonchus oleraceus A. C. Sanders 2005-6-25 31201 San Diego South Coast: San Dieguito Lagoon Ecologigal Reserve, north edge of reserve along Palm Lane. Comment
  SD198273  Sonchus oleraceus Larry Hendrickson 2007-6-4 2348 San Diego Banner, 3 mi E of Julian, in canyon south of State hwy. 78, ca. 0.1 mile east of intersection of 78 and Chariot Canyon Road. 853 Comment
  SD198274  Sonchus oleraceus Bill Sullivan 2007-3-1 272 San Diego Borrego Springs, Anza-Borrego Desert State Park, 6.72 miles N of Borrego Springs, 2.85 miles NW of intersection of Di Giorgio Road and Coyote Way, on Coyote Canyon Jeep Trail, 400 yd northwest on east bank of Coyote Creek 305 Comment
  SD198275  Sonchus oleraceus Mike D. Angel 2008-1-26 552 San Diego City of San Diego, 2.5 miles east of I-805 on Mira Mesa Blvd, 1/2 mile south of Mira Mesa Boulevard onCamino Santa Fe. Follow trail along stream bed west. 92 Comment
  SD199059  Sonchus oleraceus Karen Rich, Gary Erbeck 2006-5-21 272 San Diego Del Mar, in front of San Diego Polo Club, on El Camino Real, about 1/8 mile south of Via de la Valle 7 Comment
  SD199878  Sonchus oleraceus Jon Rebman, G. Fleming and W. Schmidtmann 2009-3-12 16445 Imperial Freeman 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 99 Comment
  SD200347  Sonchus oleraceus Jon Rebman, G. Fleming, V. Marshall, & A. Winner 2009-3-24 16673 b Imperial Freeman 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 57 Comment
  SD200729  Sonchus oleraceus Margaret R. Mulligan, W. Schmidtmann, K. Mabb 2008-3-26 2160 San Diego Camp Pendleton Marine Corps Base, Papa One Training Area, west side of Pulgas Lake. 120 Comment
  SD200730  Sonchus oleraceus Margaret R. Mulligan, Carolyn Martus 2008-4-18 2386 San Diego Camp Pendleton Marine Corps Base, Bravo Three Training Area, ca. A| mi southeast of San Mateo (62 Area), ca. 1 mi west of San Mateo Road, just southeast of Impact Area 30. 234 Comment
  SD200731  Sonchus oleraceus Margaret R. Mulligan, J. Gregory, S. Leininger 2007-4-9 1843 San Diego Camp Pendleton Marine Corps Base. Santa Margarita River, on road parallel to river just east of Stuart Mesa Road. 0 Comment
  SD201419  Sonchus oleraceus Margaret R. Mulligan, Carolyn Martus 2008-4-18 2330 San Diego Camp Pendleton Marine Corps Base, San Onofre Creek area, Alpha Two Training Area, Ao mi south of Basilone Road, ca. I(c) mi east of San Onofre Mobile Home Park. 17 Comment
  SD201422  Sonchus oleraceus Margaret R. Mulligan, J. Rebman, B. Ladiere 2009-4-9 2905 San Diego Camp Pendleton Marine Corps Base, Juliet Training Area, along tributary of San Luis Rey River, just E of San Luis Rey Housing Area. 79 Comment
  SD203281  Sonchus oleraceus Carolyn Martus 2008-3-25 499 San Diego Northeast of Fallbrook. Santa Margarita River just below the confluence with Sandia Creek on northwest side 111 Comment
  SD20410  Sonchus oleraceus A. J. Stover 1938-3-4 San Diego Theosophical grounds, Point Loma. Comment
  SD204153  Sonchus oleraceus Jeannie Gregory, John Gregory 2008-3-7 2682 San Diego Anza-Borrego Desert State Park, 3.5 mi SE of intersection Arroyo Salada and Borrego Salton Seaway (S22), just S of 17 Palms Oasis, ca 1 mi from Imperial County line 110 Comment
  SD204154  Sonchus oleraceus Jon P. Rebman, L. Aerne-Hains & W. Schmidtmann 2010-3-11 18823 San Diego Cleveland National Forest: Southeast of El Cajon Mountain; west of the El Capitan Reservoir, just east of El Cajon Mountain Truck Trail 245 Comment
  SD205509  Sonchus oleraceus Jeannie Gregory, Layla Aerne 2008-2-18 2553 San Diego Sweetwater Regional Park, 0.3 mi SE of Sweetwater Resevoir Dam, E of Highway 54, ca 3 mi N of Otay Lakes Road intersection with Corral Canyon Road. 107 Comment
  SD205510  Sonchus oleraceus Jeannie Gregory, M. Hawke, L. Aerne 2008-3-5 2612 San Diego Dehesa, Fish & Wildlife Refuge Land, N of Singing Hills Golf Course, 0.35 mi SE of intersection Willow Glen Road and Dehesa Road 146 Comment
  SD205511  Sonchus oleraceus Margaret R. Mulligan, Michael Wall 2008-4-17 2239 San Diego Del Dios Highlands County Preserve, eastern side of peak, approx. A| mi W on trail (road) from Del Dios Highway parking lot, N of Lake Hodges. 244 Comment
  SD205512  Sonchus oleraceus Beverly Pecunia, Victoria Marshal 2007-10-18 167 San Diego City of Escondido, 4.5 mi NE of, just N of Bottle Peak, along N shoreline of Lake Wohlford 458 Comment
  SD205513  Sonchus oleraceus Jonathan K. Snapp-Cook, K. Williams, J. Shoemaker 2008-5-24 141 San Diego Otay Mountain NW side, Bureau of Land Management, canyon just W of Little Cedar Canyon that begins at eastern end of Lower Otay Lake. Entered canyon by heading 2.5 miles SE on the dirt road starting at the yellow gate off Otay Lakes Road. 451 Comment
  SD205514  Sonchus oleraceus Barbara Booth, Justin M. Wood and Dustin Ray 2009-7-14 234 San Diego SW of Oak Grove, Rattlesnake Canyon, Cleveland National Forest, in bottom of canyon. 926 Comment
  SD205516  Sonchus oleraceus Jerilyn Hirshberg 2008-7-11 1858 San Diego Cleveland National Forest, W side of Cuyamaca Mtns, 0.5 mile west of intersection of Boulder Creek Road and Cedar Creek Road, west of Eagle Peak 879 Comment
  SD206567  Sonchus oleraceus Jon P. Rebman, L. Aerne Hains, J. Schlachter, & parabotany team 2010-6-3 19482 San Diego Bureau of Land Management (BLM) Property: northeast of Ramona; south of Hwy. 78 and north of Old Julian Hwy. 683 Comment
  SD209627  Sonchus oleraceus Jon P. Rebman, J. Schlachter, L. Aerne Hains, & volunteers 2010-8-14 20161 San Diego Along Cooper Cienega Truck Trail: S of the Riverside/San Diego County border and N of Chihuahua Valley Road; on Bureau of Land Management lands in the vicinity of a pond and canyon below 1200 Comment
  SD210078  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann, J. Rocks & volunteers 2010-12-2 20552 San Diego Camp Pendleton: Golf Training Area; west of De Luz Road and north of Camp De Luz; along De Luz Creek 70 Comment
  SD210795  Sonchus oleraceus Carolyn Martus, MRM, MMT 2006-5-24 149 San Diego Camp Pendleton, 100 yds W of the intersection of Las Pulgas and Stuart Mesa Road, I(c) mi E of Interstate 5. 31 Comment
  SD212515  Sonchus oleraceus Andrew C. Sanders 2005-6-17 31044 San Diego Boden Canyon Ecological Reserve at E end of San Pasqual Valley, lower part of reserve along Santa Ysabel Creek at confluence with Clevenger Canyon Quad: San Pasqual 7.5A Q. 200 Comment
  SD212517  Sonchus oleraceus Andrew C. Sanders 2005-5-6 29962 San Diego Blue Sky Ecological Reserve, east of Rancho Bernardo and north of Poway, along Green Valley Truck Trail, in canyon below turnoff to Lake Poway Quad: Escondido 7.5A Q. 213 Comment
  SD214839  Sonchus oleraceus Nancy Nenow 2009-5-21 788 San Diego San Diego, north side of Balboa Park, about 275 yds W of Brookes Ave and Richmond St, at the bottom of the canyon south of Cypress Avenue and Vermont Street in Hillcrest. 70 Comment
  SD214840  Sonchus oleraceus Reginald Durant, D. Taylor, Hiromi, S. Palksdorf, J. Stei 2008-6-22 15 San Diego Cleveland National Forest, along Cutca Trail, 4.5 miles SW of town of Auanga (Highway 79), 1.47 miles NE of Morgan Hill. 1124 Comment
  SD215917  Sonchus oleraceus Jon P. Rebman, John Martin and SDNHM volunteers 2011-4-27 21281 San Diego San Diego National Wildlife Refuge: southeast of Sweetwater Reservoir; west side of Mother Miguel Mountain; in a small canyon and on the grassland slopes around it 164 Comment
  SD215918  Sonchus oleraceus Melvin M. Sweet 2009-4-15 785 San Diego Anza-Borrego Desert State Park, Coyote Canyon; about 1/2 mile below the Second Crossing; 7.5 miles NW of the intersection of DiGiorgio Rd and County Hwy S22 in Borrego Springs. 309 Comment
  SD216836  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann, V. Marshall, J. Barth 2011-4-28 21453 San Diego Cleveland National Forest: E of Eagle Peak; along a dirt road to Cedar Creek off of Boulder Creek Road; canyon area 804 Comment
  SD218608  Sonchus oleraceus Michael G. Simpson, M. Blake-Jacobson, W. Schmidtmann 2010-5-22 3258 San Diego Torrey Pines State Park, southern end, near fence at golf course near Torrey Pines Park Road, ca. 0.6 mile southeast of VisitorAs Center. San Diego. 120 Comment
  SD219378  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann & G. Kenney 2012-2-16 22389 San Diego Camp Pendleton: at Lake O'Neill; south of the hospital and east of Santa Margarita Road; vicinity of a lakeside park and along the trail around the Lake 35 Comment
  SD219379  Sonchus oleraceus Jon P. Rebman, John Martin & volunteers 2011-5-31 21993 San Diego San Diego National Wildlife Refuge: East of Bonita and just south of the Sweetwater Reservoir; Shinohara Vernal Pool area 89 Comment
  SD220249  Sonchus oleraceus Nancy Nenow 2010-8-28 1438 San Diego Cleveland National Forest; Puerta La Cruz Road; 2 miles SE Mitchell Camp Road and Chihuahua Valley Road; 5.7 miles N of Warner Springs and Hwy 79 1168 Comment
  SD220250  Sonchus oleraceus Nancy Nenow 2010-8-4 1391 San Diego Warner Springs Ranch west of highway 79 and just south of the golf club parking lot. 953 Comment
  SD220251  Sonchus oleraceus Nancy Nenow 2010-4-6 928 San Diego City of San Diego; Mira Mesa; N of Rimridge Lane, near W end of Camino Ruiz Park off Camino Ruiz at it's northern end. 131 Comment
  SD221950  Sonchus oleraceus Mike Bigelow, Jan Bigelow 2010-4-12 237 San Diego Borrego Springs; 1010 Palm Canyon Drive, just E of Di Giorgio Rd. 170 Comment
  SD221951  Sonchus oleraceus Joe Barth 2010-2-5 897 San Diego City of San Diego; edge of San Diego Bay at Shelter Island Yacht Basin; corner of Talbot St and Anchorage Ln. 10 Comment
  SD221952  Sonchus oleraceus Joe Barth, Rosalee Clanton with Chloe, Jade, and Athena. 2010-2-21 903 San Diego Eucalyptus County Park outside SE edge of city of La Mesa at Bancroft Dr and Edgewood Dr. Collected from perimeter of park (outside irrigated zones). 123 Comment
  SD221953  Sonchus oleraceus Joe Barth 2010-5-16 1018 San Diego City of Santee. Around hill and area adjacent to baseball fields just N of San Diego River. W of Riverford Rd, S of Mast Blvd, E of Ramsgate Wy. 136 Comment
  SD228138  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann, J. Green, V. Marshall,T. Barckley 2012-5-31 24520 San Diego Lake Hodges: south of Escondido; southeast of the intersection of Lake Drive and Beech Lane; northwest side of Lake along the shore 95 Comment
  SD229699  Sonchus oleraceus Jon Rebman 2012-3-4 22576 Santa Barbara Santa Cruz Island: north of Main Ranch; in a small side canyon east of the road near the junction of the central valley (Canada del Medio) with Canada del Puerto 95 Comment
  SD231571  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann & G. Kenney 2013-3-27 25645 San Diego Camp Pendleton: northwest portion of Base; Training Area Finch; east of Basilone Road and just off of San Juan Road along San Onofre Creek 74 Comment
  SD232206  Sonchus oleraceus V. Soza, LeRoy Gross 2001-5-14 1215 Los Angeles Transverse Ranges, San Gabriel Mountains region: Santa Anita 1999 Fire area, above Santa Anita Canyon, ca. 0.7 mile west of the Santa Anita Dam. SE-facing slope of ridgetop, recently burned area. 762 Comment
  SD233770  Sonchus oleraceus Mark A. Elvin 2003-5-3 2633 San Diego Peninsular Ranges, San Ysidro Mountains: SE side of Otay Mtn., western Marron Valley, mouth of Mine Canyon, ca. 1 km N of the Mexican border, slopes above the Tijuana River (Otay Mountain 7.5' Q). 152 Comment
  SD234840  Sonchus oleraceus A. C. Sanders, M. Elvin, C. Burrascano, A. Pignoli, A. Thompson, et al 2003-5-4 26537 San Diego Peninsular Range: Otay Mountain, ridge ca 2-3 miles east of the peak, around end of jeep trail (Otay Mountain 7.5' Q) 945 Comment
  SD235917  Sonchus oleraceus Mike D. Angel 2009-4-12 711 San Diego Olivenhain; along Escondido Creek, about 1.5 mile W of Olivenhain, area S of Rancho De Mayo, area near Little Oaks Park 17 Comment
  SD235918  Sonchus oleraceus Joe Barth 2011-12-28 2044 San Diego Mt Helix; near city of La Mesa. ~60 to 100m S and SE of summit. 384 Comment
  SD235920  Sonchus oleraceus Beverly Pecunia 2011-4-4 325 San Diego North of Escondido; 1.6 miles NNE of I-15 and Mountain Meadows Road, W of Turner Lake 444 Comment
  SD235921  Sonchus oleraceus Joe Barth 2011-12-27 2008 San Diego Fuerte Dr, between the cities of La Mesa and El Cajon. ~0.6 mile NNW of up top Mt Helix. Between Grossmont Blvd and Sunset Ave. 299 Comment
  SD240584  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann & G. Kenney 2014-5-8 28314 San Diego Camp Pendleton: Training Area India: eastern portion of Base; along the Santa Margarita River just southwest of the De Luz Road crossing 35 Comment
  SD24317  Sonchus oleraceus Frank F. Gander 1939-3-16 6989 San Diego near east end of Sweetwater Lake. Comment
  SD243594  Sonchus oleraceus John LaGrange, Mary Rider 2010-5-30 682 San Diego San Elijo Lagoon Preserve; 100 meters W of El Camino Real trailhead; trailhead is 0.1 mile N of intersection El Camino Real and Rancho Serena 7 Comment
  SD243595  Sonchus oleraceus John LaGrange, Mary Rider 2012-4-17 996 San Diego City of San Diego, Rolando neighborhood, roadside along Alamo Drive, E side of road between Patria Drive and Alamo Way 121 Comment
  SD243596  Sonchus oleraceus John LaGrange 2011-5-14 856 San Diego Cleveland National Forest; Guejito Truck Trail, about 0.5 miles S of intersect with Orozco Truck Trail, upper end of Boden Canyon where the old road crossed the creek and climbed out to the east 449 Comment
  SD244967  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann & G. Kenney 2015-2-24 29417 San Diego Camp Pendleton: east-central portion of Base; India Training Area; north of Lake O'Neill; east of the Santa Margarita River; in a burn area just east of De Luz Road along the Fallbrook Weapons Station border 99 Comment
  SD245682  Sonchus oleraceus Kathleen A Mauro, Andrew Mauro 2010-4-13 51 San Diego Rancho Santa Fe; along La Orilla Rd., between El Camino Real and Cerro del Cerro 10 Comment
  SD247822  Sonchus oleraceus Larry Hendrickson 2013-3-28 5996 San Diego Anza-Borrego Desert State Park. State Route 78, 3.9 miles E of intersection with Yaqui Pass Rd. (County Rd. S-3), and 0.8 mile W of Narrows Earth Trail parking. 342 Comment
  SD248962  Sonchus oleraceus Nancy Nenow 2011-1-22 1553 San Diego La Jolla; about 300 yards SW of intersection Expedition Way and N Torrey Pines Road; west of Torrey Pines Road along walking trail on open mesa. 120 Comment
  SD249986  Sonchus oleraceus Nancy Nenow 2012-3-15 2360 San Diego Pacific Beach; canyon trail about 850 yards NW of intersection Clairmont Drive and Balboa Ave; at north end of Balboa Terrace along canyon trail. 56 Comment
  SD249991  Sonchus oleraceus Nancy Nenow 2012-4-3 2456 San Diego Carlsbad; east of Carlsbad Blvd and west of railway tracks; just north of La Costa Ave on the edge of Batiquitos Lagoon 9 Comment
  SD251009  Sonchus oleraceus Joe Barth 2012-2-11 2143 San Diego Sweetwater River valley; area of National City and Chula Vista; E of 805 along Sweetwater Road 0.08 mi NE of junction with Willow Street 20 Comment
  SD251010  Sonchus oleraceus Nancy Nenow 2012-2-11 2170 San Diego Encinitas; Cottonwood Creek Park; W of I-5; just yards north of Encinitas Blvd and east of South Vulcan Ave. along small steam in the park. 20 Comment
  SD251011  Sonchus oleraceus Jerry Green 2011-3-1 172 San Diego Rancho Penasquitos; Black Mountain; 0.34 miles NE of junction Laurentian Dr. & Mediatrice Ln. 306 Comment
  SD252044  Sonchus oleraceus Jeannie Gregory, Joe Barth 2010-5-15 3430 San Diego Rancho San Diego; US Fish & Wildlife Refuge; N side of San Miguel Mountain; W of Millar Ranch Road; 0.72 miles SW of junction with Highway 94 (Campo Road); E side of Sweetwater River 92 Comment
  SD252046  Sonchus oleraceus Mary Ann Hawke, J. Gregory, L. Aerne 2008-3-5 112 San Diego Dehesa; Fish & Wildlife Refuge; 0.18 mi E of intersection Willow Glen Road and Dehesa Road; just N of Singing Hills Golf Course 803 Comment
  SD252550  Sonchus oleraceus Nancy Nenow 2012-3-15 2341 San Diego Pacific Beach; in the canyon at the northeast end of Van Nuys Way; E of Rutgers Road; W of Caminito Bayo 73 Comment
  SD252551  Sonchus oleraceus Nancy Nenow 2012-3-30 2402 San Diego Leucadia; just east of Highway 5; near southern corner of junction Plato Place and Piraeus Street on vacant mesa. 42 Comment
  SD253036  Sonchus oleraceus Mary Jo Churchwell 2014-2-20 839 San Diego Anza-Borrego Desert State Park; Cottonwood Spring; about 3 miles E of Ranchita; and 0.78 air mile W of junction of Old Culp Valley Road and County Highway S-22. 1032 Comment
  SD253699  Sonchus oleraceus Mary Jo Churchwell 2014-1-2 823 San Diego Anza-Borrego Desert State Park; Big Spring; 4.80 miles ESE of Ranchita; 1.21 miles ESE of junction Old Culp Valley Road and S-22. 779 Comment
  SD253700  Sonchus oleraceus John LaGrange, Mary Rider 2013-4-21 1224 San Diego Lake Hodges area; San Dieguito River canyon west of foot bridge; 1 mile west of Lake Hodges dam; just S of Del Dios Highway 67 Comment
  SD256432  Sonchus oleraceus Mike Bigelow 2015-3-23 419 San Diego Borrego Springs; 180 yards NE of intersection Palm Canyon Drive and Di Giorgio Road, yard 167 Comment
  SD258080  Sonchus oleraceus Larry Hendrickson 2015-4-11 6608 San Diego Banner Canyon; Bureau of Land Management property; W side of State Route 78 (Banner Grade); 1.7 air miles E of Julian; 2.1 surface miles SE of intersection with Wynola Road. 996 Comment
  SD38307  Sonchus oleraceus Edith A. Purer Mar 1932 San Diego Silver Strand, near road. Comment
  SD38309  Sonchus oleraceus Edith A. Purer 1932-8-25 Santa Barbara Northwest Guadalupe, Comment
  SD5099  Sonchus oleraceus Mary S. Snyder 1899-3-25 San Diego Pacific Beach Comment
  SD53603  Sonchus oleraceus E. Norland 1963-7-29 San Diego East Spring Valley; Highland Ave.; Along road by abandoned truck crop fields on hilltop; Comment
  SD63389  Sonchus oleraceus Peter H. Raven, Henry J. Thompson 23-24 Apr 1966 20705 Ventura San Nicolas Island; northwest end of island, Seal Beach. Comment
  SD69570  Sonchus oleraceus Robert F. Thorne 1966-9-14 Los Angeles Santa Catalina Island. behind dunes and salina at Little Harbor. 4 Comment
  SD9000  Sonchus oleraceus Unknown 6 Apr 0000 San Diego Fallbrook Comment
  SD9001  Sonchus oleraceus Daniel Cleveland Mar 1881 San Diego San Diego Comment
  SD9002  Sonchus oleraceus Daniel Cleveland Mar 1875 San Diego San Diego Comment
  SD9003  Sonchus oleraceus Daniel Cleveland 1884-2-24 San Diego San Diego (mak 6/06) Comment
  SDSU12939  Sonchus oleraceus Jutta Buschbom 1991-6-3 24 Riverside SE-Slope, N-border of the Reserve, beyond an Avocado-grove, ca. 500m (15 min) NW from the field station. Santa Margarita Ecological Reserve, Temecula. 375 Comment
  SDSU14541  Sonchus oleraceus Craig H. Reiser, Kyle L. Ince 1990-6-22 22 -VI-90 San Diego Camp Joseph Pendleton MCB. San Diego County, California. Base Section: Oscar I. 9 Comment
  SDSU15662  Sonchus oleraceus Dinna C. Estrella 2003-4-25 147 San Diego Point Loma Naval Facility, SPAWAR. West of Woodward Rd., nearest cross street Propagation Rd. ca. 500 ft. North of cross roads. 33 Comment
  SDSU16443  Sonchus oleraceus Andrew J. Russ 2005-3-8 2 San Diego San Diego State University, San Diego. North of Art building. Northern side of trail. 10m WNW of 1st light pole from stairs. 110 Comment
  SDSU535  Sonchus oleraceus M. Waggoner 1963-7-29 San Diego Northeast of 9433 Alto Drive, Mount Helix area. 290 Comment
  SDSU536  Sonchus oleraceus H. Wedberg 1961-12-23 746 San Diego At 9544 Rawlins Way, Santee. 168 Comment
  SEINET10886931  Sonchus oleraceus Greg Gust, Leith Nye 2005-3-3 Gust 463 Imperial BLM Land just NE of Ogilby about 20 miles NW of Yuma off of Hwy 534 on American Girl Mine Rd. Desert Scrub. 159 Comment
  SEINET13384003 Image available Sonchus oleraceus R. G. Swinney 2010-1 12326 Los Angeles San Gabriel Mountains: Pacoima, 0.4-0.6 miles north of Gavina Ave. in Pacoima Wash 457 Comment
  SEINET179461  Sonchus oleraceus Lawrence Booth 1932-6-15 1193 Orange East of Huntington Beach, Marsh border Comment
  SEINET1906356  Sonchus oleraceus Sarah J. De Groot 2004-1 3933 San Bernardino Copper Basin reservoir, ~NE side of lake. MWD property (permit 28 Aug. 2003). 301 Comment
  SEINET200988  Sonchus oleraceus Joseph P. Tracy 1903-8-2 sn Humboldt At Eureka 0 Comment
  SEINET2055267 Image available Sonchus oleraceus Scott White 1994-3-29 1940 Riverside Beaumont Badlands, near county dump and old DeAnza Cycle Park, N of Hwy 60, El Casco Quad. 701 Comment
  SEINET213336  Sonchus oleraceus Noel H. Holmgren, Patricia K. Holmgren; Ruth Kern 1973-3-21 6432 Riverside Big Maria Mts, 12 airline miles north of downtown Blythe 290 Comment
  SEINET4049325  Sonchus oleraceus D. F. Sax 1997-1 sn Los Angeles Santa Monica Mountains, Peperdine University. 182 Comment
  SEINET7990726  Sonchus oleraceus Jon P. Rebman 2000-1-14 6137 San Diego Switzer Canyon, N Park area: Switzer Canyon, mostly W of 30 th Street. 100 Comment
  SEINET7990727  Sonchus oleraceus Jon P. Rebman 2000-2-11 6171 San Diego Cedar Ridge Park Canyons, N Park / Golden Hill: Cedar Ridge area, Canyon 150 Comment
  SFV4120  Sonchus oleraceus K. A. Wilson 1961-2-21 875 Los Angeles San Fernando Valley Los Angeles, Northridge. San Fernando Valley State College campus. Weedy field and edges of orange grove. 260 Comment
  SJSU8162  Sonchus oleraceus S. T. Kraten 1973-2-28 Santa Clara 1616 Hollenbeck Ave., Sunnyvale Comment
  UC1070275  Sonchus oleraceus N. K. Carlson 1936-3-22 207 San Luis Obispo 1 mi sse Miles; Arroyo Grande Quad. 45 Comment
  UC1070276  Sonchus oleraceus D. Axelrod 1935-3-17 113 Santa Barbara 1 mi sw Zaca; Lompoc Quad. Comment
  UC1070278  Sonchus oleraceus N. K. Carlson 1936-3-19 158 San Luis Obispo 1.9 mi ese Picacho; Arroyo Grande Quad. 175 Comment
Read comments
Nov 9 2008
  UC1177290  Sonchus oleraceus John Thomas Howell 1945-7-8 21281 Marin Burdell Comment
  UC1215136  Sonchus oleraceus Peter H. Raven 1962-4-9 17139 Los Angeles near barracks (Wilson Cove, San Clemente Island); San Clemente Island, Wilson cove 60 Comment
  UC123736  Sonchus oleraceus H. A. Walker 1907-7-7 672 Alameda Fruitvale Comment
  UC123760  Sonchus oleraceus H. A. Walker 1907-7-4 618 Marin Cascade Drive Mill Valley (Mill Valley) Comment
  UC134386  Sonchus oleraceus H. Hemphill 1901-1 Ventura Anacapa Island Comment
  UC1348970  Sonchus oleraceus Robert F. Thorne 1966-4-7 35960 Los Angeles Santa Catalina Island 60 Comment
  UC1357801  Sonchus oleraceus Ronald E. Foreman and R. M. Lloyd 1965-12-17 129 Ventura e living quarters (San Nicolas Island); San Nicolas Island 30 Comment
  UC1357802  Sonchus oleraceus Ronald E. Foreman, E. C. Evans III, S. C. Rainey 1965-7-28 95 Ventura bluff overlooking Tule Creek (San Nicolas Island); San Nicolas Island 129 Comment
  UC1443161  Sonchus oleraceus H. A. Wier and R. M. Beauchamp 1978-7-4 Ventura Silver Tank Spring , Silver Tank Spring (San Nicolas Island) 182 Comment
  UC147612  Sonchus oleraceus Miss Harriet A. Walker 1908-6-27 1330 Placer Blue Canyon 1432 Comment
  UC1532940  Sonchus oleraceus Robert F. Thorne 1975-9-4 47386 Los Angeles campus USC Marine Science Center (Fisherman's Cove, Santa Catalina Island); Santa Catalina Island, Fisherman's Cove, USC Marine Science Comment
  UC1595228  Sonchus oleraceus Tim Ross and Peter Fritsch 1990-6-20 3610 Los Angeles mouth Burro Canyon (near confluence E and W Forks San Gabriel River); San Gabriel Mountains, near confluence E and W Forks San Gab 445 Comment
  UC164789  Sonchus oleraceus J. P. Tracy 1903-8-2 1926 Humboldt immediate vicinity Eureka 0 Comment
  UC1790142  Sonchus oleraceus Jon P. Rebman 2002-8-7 8253 San Diego Kelley/Rebman Ranch at 565 Anderson Truck Trail on northwest side of Viejas Mountain: approx. 2 miles north of Victoria Road in Alpine 800 Comment
  UC1929639  Sonchus oleraceus Valerie Soza, LeRoy Gross 2001-5-14 1215 Los Angeles Transverse Ranges; San Gabriel Mountains; Santa Anita 1999 Fire area, above Santa Anita Canyon, c. 0.7 mi west of the Santa Anita Dam 762 Comment
  UC1948948  Sonchus oleraceus William J. Ferlatte, L. Maynard Moe 1970-4-27 1222 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC197003  Sonchus oleraceus F. E. and E. S. Clements 1914-5-14 268 San Diego Howard Canyon , Howard Canyon (La Jolla) Comment
  UC2027083  Sonchus oleraceus Greg Wilvert 2005-4-25 320 San Luis Obispo Southeast Half of the Caliente Range: 1.1 km SW of Wells Spring Comment
  UC2032807 Image available Sonchus oleraceus Doran, Andrew Scott 2012-3-20 677 Contra Costa Brooks island loading dock, North side of island. Comment
  UC2052906  Sonchus oleraceus M. B. Dunkle 1939-8-13 8589 Santa Barbara Santa Cruz Island, Prisoners Harbor. Comment
  UC36525  Sonchus oleraceus J. Burtt Davy 1896-10-19 2854 San Bernardino Pomona Comment
  UC36527  Sonchus oleraceus J. Burtt Davy 1893-6-3 Alameda Berkeley Comment
  UC36528  Sonchus oleraceus J. Burtt Davy June 1893 4 Alameda Berkeley Comment
  UC36529  Sonchus oleraceus J. Burtt Davy 1893-6-3 Alameda Berkeley Comment
  UC407040  Sonchus oleraceus Ira L. Wiggins 1930-4-18 4608 Contra Costa Jersey Island Comment
  UC455896  Sonchus oleraceus I. J. Condit 1910-10-15 San Luis Obispo California Polytechnic School Comment
  UC483265  Sonchus oleraceus L. R. Abrams and I. L. Wiggins 1931-7-3 297 Santa Barbara Santa Barbara Island , Santa Barbara Island (Channel Islands) Comment
  UC537022  Sonchus oleraceus Lawrence M. Booth 1932-5-12 1012 Orange Newport Bay Comment
  UC537123  Sonchus oleraceus Lawrence M. Booth 1932-7-21 1297 Orange Anaheim Marsh Comment
  UC582435  Sonchus oleraceus Joseph P. Tracy 1935-5-16 13805 Humboldt Eureka 30 Comment
  UC60063  Sonchus oleraceus H. M. Hall May 1-5 1904 4832 Alameda Botanical Garden, University of California Comment
  UC606734  Sonchus oleraceus Edward Lee 1936-4-19 1955 Contra Costa ne shore Red Rock (San Francisco Bay); , ne shore Red Rock Comment
  UC63155  Sonchus oleraceus H. M. Hall May 6 1902-May 8 1902 3148 Ventura Casitas Pass 228 Comment
  UC650555  Sonchus oleraceus Ira L. Wiggins 1930-4-18 4608 Contra Costa Jersey Island Comment
  UC671959  Sonchus oleraceus Evelyn Hart Nelson 1940-3-20 87 Santa Clara Loma Prieta Santa Cruz Mountains, Loma Prieta 975 Comment
  UC685458  Sonchus oleraceus Bob Rodin 1943-4-16 116 Alameda on southern slope w Botanical Garden (Strawberry Canyon, University of California Campus, Berkeley); Berkeley, University of California campus, Strawberry Canyon Comment
  UC691439  Sonchus oleraceus Mary L. Bowerman 1932-4-27 1369 Contra Costa w facing bank of ridge w Riggs Canyon (Oyster Ridge, Mount Diablo); Mount Diablo, s face Oyster Ridge Comment
  UC691778  Sonchus oleraceus Mary L. Bowerman 1930-8-24 416 Contra Costa Mitchell Canyon , Mitchell Canyon (Mount Diablo) Comment
  UC691790  Sonchus oleraceus Mary L. Bowerman 1935-4-12 2813 Contra Costa North Road Mount Diablo (Mount Diablo) 198 Comment
  UC729562  Sonchus oleraceus Carl B. Wolf 1932-5-9 3422 Los Angeles near Bathhouse (Avalon, Santa Cataline Island); Santa Catalina Island, Avalon Comment
  UC75803  Sonchus oleraceus unknown June 1903 Los Angeles Los Angeles Comment
  UC830471  Sonchus oleraceus I. W. Clokey 1930-6-9 4821 Santa Barbara Prisoners Harbor , Prisoners Harbor (Santa Cruz Island) 1000 Comment
  UC830472  Sonchus oleraceus I. W. Clokey 1930-5-26 4820 Santa Barbara Dix Canyon , Dix Canyon (Santa Cruz Island) Comment
  UC830473  Sonchus oleraceus Ira W. Clokey 1930-7-2 5079 Santa Barbara Pelican Bay Santa Barbara Islands, Santa Cruz Island, Pelican Bay (Santa Cruz Island, Santa Barbara Islands) Comment
  UCD120783  Sonchus oleraceus Ellen Dean; G. Golden, C. Loughran, PLB 102 interns 2012-4-29 7327 Napa East of Las Posadas Rd. California Dept. of Forestry's Las Posadas State Experimental Forest, east of the town of Angwin. Near entrance gate, west of fire station buildings. 521 Comment
  UCD136155  Sonchus oleraceus Linda M. Barker 1976-7-5 1644 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD136156  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD136157  Sonchus oleraceus Gerald L. Benny; Colin M. Wainwright 1971-4-21 380 San Bernardino Day Canyon, San Bernardino National Forest. Comment
  UCD136163  Sonchus oleraceus Larry DeBuhr; Gary Wallace 1973-3-3 793 Imperial Yuha Basin, Pinto Wash; along Highway 98 about 16 miles west of Calexico. Comment
  UCD136180  Sonchus oleraceus L. G. Goar 1930-4-20 s.n. Yolo Putah Canyon. Comment
  UCD136188  Sonchus oleraceus P. B. Kennedy 1920-6-23 s.n. Yolo Holland Land Co. Sacramento River - Clarksburg. Comment
  UCD136195  Sonchus oleraceus A. C. Sanders 2005-5-6 29962 San Diego Peninsular Ranges; Coastal Foothills region: Blue Sky Ecological Reserve, east of Rancho Bernardo and north of Poway, along Green Valley Truck Trail, in canyon below turnoff to Lake Poway. 213 Comment
  UCD136196  Sonchus oleraceus Clifton F. Smith 1944-4-1 656 Santa Barbara in Botanic Garden, Santa Barbara. Comment
  UCD136203  Sonchus oleraceus Robert F. Thorne 1984-5-6 58412 Santa Barbara Santa Cruz Island: Prisoners' Bay Canyon, behind Prisoners' Harbor Camp. 4 Comment
  UCD136204  Sonchus oleraceus M. Tu 1995-8-10 191 Sacramento Cosumnes River Preserve - Tall Forest. Collected from the southern end of the Tall Forest, about 200 meters E from the pump station. 1 Comment
  UCD150976  Sonchus oleraceus D. S. Park 2010-4-29 62 Los Angeles Wildwood Canyon, roadside near first canyon entrance trailhead. 388 Comment
  UCD159366  Sonchus oleraceus D. S. Park 2010-7-4 151 -1 Monterey Monterey, near gas station before entrance to 17 Mile Rd. Small population. 117 Comment
  UCD159367  Sonchus oleraceus D. S. Park 2010-7-4 151 -2 Monterey Monterey, near gas station before entrance to 17 Mile Rd. Small population. 117 Comment
  UCD159368  Sonchus oleraceus D. S. Park 2010-7-4 151 -3 Monterey Monterey, near gas station before entrance to 17 Mile Rd. Small population. 117 Comment
  UCD159369  Sonchus oleraceus D. S. Park 2010-7-4 151 -4 Monterey Monterey, near gas station before entrance to 17 Mile Rd. Small population. 117 Comment
  UCD159886  Sonchus oleraceus Carla DeCrona 1992-4-5 11- 112 Sacramento Cosumnes River Preserve Plant Inventory. Area 11: Live Oak, The Point: bounded on N by seasonal slough, on W by RR tracks, on S by Cosumnes River. 7 Comment
  UCD159925  Sonchus oleraceus Alice Warrick 2008-4 s.n. Napa Quail Ridge UC Reserve. 2005 Pleasure Fire burn site, along west loop road, north of Decker canyon. 243 Comment
  UCD165951  Sonchus oleraceus Ellen Dean; with K. Mawdsley and L. Huiet 2016-5-12 8895 Solano Mix Canyon, to the west of Pleasant Valley Rd. Along road side on south side of creek. North and south sides of road. 155 Comment
  UCD20791  Sonchus oleraceus N. Nicola 2001-3-14 007 Yolo Sacramento Valley, 4 miles west of Woodland, at Cache Creek Nature Preserve, riparian zone of Cache Creek. Comment
  UCD21250  Sonchus oleraceus J. Shepard 2000-4-9 113 Yolo Yolo County Grasslands Park: East of Davis, from intersection of I-80 and Mace Blvd., 3.5 mi. south on Mace Blvd. (County Road 104), thence east along unpaved entrance road. On side of path by archery range, north of parking lot on N side of entrance road. 12 Comment
  UCD21380  Sonchus oleraceus J. Shepard 2001-3-26 422 Yolo Yolo County Grasslands Park: East of Davis, from intersection of I-80 and Mace Blvd., 4 mi. south on Mace Blvd. (County Road 104), thence east 0.5 miles along County Road 36. Five yards from east boundary and the Department of Defense property fence and approximately 200 yards north of County Road 36. 12 Comment
  UCD48571  Sonchus oleraceus K. Mogel; B. Pekin and M. Higley 2002-5-4 4 Napa Quail Ridge UC Reserve. At northern tip of ridge, N of the jct of West and East roads; ca. 100 ft along the lower road that leads to the power lines; immediately downslope of road. 335 Comment
  UCD50128  Sonchus oleraceus M. Tu 1998-11-5 156 Sacramento Cosumnes River Preserve Plant Inventory - Seed Bank Plants. 1 Comment
  UCD50129  Sonchus oleraceus M. Tu 1999-5-13 251 Sacramento Cosumnes River Preserve Plant Inventory - Seed Bank Plants. 1 Comment
  UCD50130  Sonchus oleraceus M. Tu 1996-6-17 194 Sacramento Cosumnes River Preserve Plant Inventory - Tall Forest. Collected from the southern end of the Tall Forest, about 200 m E from the pump station. 1 Comment
  UCD73712  Sonchus oleraceus Ayzik Solomeshch 2004-5-13 s. n. Yolo Audubon Bobcat Ranch, west of the city of Winters. Southeastern corner of ranch. 83 Comment
  UCD74491  Sonchus oleraceus J. E. Sandoval 1995-10-30 98 Merced Great Valley Grasslands State Park (encompasses the former Fremont Ford State Recreation Area). South of the town of Stevinson, 1 mi. south of Hwy 140 on Hwy 165. 17 Comment
  UCD80915  Sonchus oleraceus Ellen Dean; F. Singh, L. Raber, C. Kraintz, R. Ghaffarzadeh 2009-4-1 5319 Yolo city of Woodland. Mavis Henson field property on the east side of County Road 102, just south of County Road 25. Property owned by city of Woodland. 9 Comment
  UCR104860  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 1998-2-18 2729 Riverside Sonoran (Colorado) Desert, Chuckwalla Valley; 0.3 mi south of Chuckwalla Rd. on Graham Pass Rd. 122 Comment
  UCR104885  Sonchus oleraceus A. C. Sanders 1997-3-19 20042 Riverside Lake Skinner area, Lake Skinner, NW shore near inlet, SW foot of Bachelor Mtn 445 Comment
  UCR108410  Sonchus oleraceus L. C. Wheeler 1968-9-21 s.n. Los Angeles San Gabriel Mtns, Aliso Canyon, Blum Ranch 884 Comment
  UCR109669  Sonchus oleraceus R. D. Goeden, Don W. Ricker 1978-1-11 s.n. San Diego Southern Coastal Plain, San Dieguito River Valley, south of Rancho Santa Fe, Via de La Valle (Hwy S6) at La Planidera Rd. 46 Comment
  UCR114473  Sonchus oleraceus Mitch Provance 1998-7-4 842 San Bernardino La Loma Hills, City of Colton, 0.5 km- 0.75 km north of Little Highgrove Peak (1478) 366 Comment
  UCR122176  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2002-4-23 7612 Fresno Central Valley; San Joaquin Valley, along CA Hwy 180, 10.8 mi west of CA Hwy 145 107 Comment
  UCR128629  Sonchus oleraceus Mark A. Elvin 2003-5-3 2633 San Diego Peninsular Range, San Ysidro Mountains, SE side of Otay Mtn., western Marron Valley, mouth of 'Mine Canyon,' c. 1 km north of the Mexican border, slopes above the Tijuana River 213 Comment
  UCR136362  Sonchus oleraceus A. C. Sanders 2004-5-7 27826 San Diego South Coast, Carlsbad, Carlsbad Highlands Ecological Reserve, canyon c. 1 mile SE of Cerro de la Calavera, c. 0.25 mi. SW of the dead end of Cannon Rd. 91 Comment
  UCR140145  Sonchus oleraceus George K. Helmkamp 2004-2-7 8257 San Luis Obispo Central Coast, SE of Oceano along Halcyon Rd., just east of Mesa View Dr. 76 Comment
  UCR146623  Sonchus oleraceus Jon P. Rebman, Jeannie Gregory 2003-5-29 9079 San Diego Peninsular Range, Rancho Jamul Ecological Reserve: west of Hwy. 94, south of Jamul & north of Otay Lakes Road; southwest part of reserve near Jamul Creek on an east-facing slope 260 Comment
  UCR147033  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2004-10-8 8838 San Luis Obispo Central Coast, Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek 136 Comment
  UCR147504  Sonchus oleraceus Jon P. Rebman 2000-5-2 6650 San Diego Coastal Plains & Basins; South Coastal Plain region, Miramar Training Area #2. East Side 300 Comment
  UCR154083  Sonchus oleraceus A. C. Sanders 2005-5-6 29962 San Diego Peninsular Ranges; Coastal Foothills region, Blue Sky Ecological Reserve, east of Rancho Bernardo and north of Poway, along Green Valley Truck Trail, in canyon below turnoff to Lake Poway 213 Comment
  UCR154237  Sonchus oleraceus Mark A. Elvin, Scott Boczkiewicz 2005-2-5 3945 San Diego Peninsular Ranges, San Ysidro Mountains, W side of Otay Mountains, 1.5 km SSE of Savage Dam (Otay Lake); N of County Prison, near tributary to Otay River, N of O'Neal Canyon 183 Comment
  UCR154784  Sonchus oleraceus A. C. Sanders 2005-6-2 30404 San Diego Peninsular Range, Palomar Mtn., Plaisted Creek Ecological Reserve, NE of Rincon & Pauma Valley, between Plaisted Cr. and Hwy 76, SE lobe of reserve near residences abandoned in 1996 793 Comment
  UCR154799  Sonchus oleraceus A. C. Sanders, T. B. Salvato 2005-6-17 31044 San Diego Peninsular Range, Boden Canyon Ecological Reserve at E end of San Pasqual Valley, lower part of reserve along Santa Ysabel Creek at confluence with Clevenger Canyon 213 Comment
  UCR156233  Sonchus oleraceus Jon P. Rebman, J. Gregory and J. Rocks 2004-6-1 10555 San Diego Otay Mountain Ecological Reserve (California Dept. of Fish & Game): Southeast of Otay Lake; south of Otay Lakes Road, just north of the old olive grove 375 Comment
  UCR157558  Sonchus oleraceus Jon P. Rebman, Jeannie Gregory 2004-5-11 10158 San Diego Sycuan Peak Ecological Reserve (California Dept. of Fish & Game): southeast of Dehesa, south of Loveland Reservoir on the lower north side of Sycuan Peak; Sweetwater River watershed in Sloane Canyon 285 Comment
  UCR158754  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2004-6-24 8697 Santa Barbara Central Coast, Ocean Park at Surf, NW of Lompoc 6 Comment
  UCR159036  Sonchus oleraceus A. C. Sanders, Jennifer Jones 2005-6-22 31134 San Diego South Coast, Buena Vista Lagoon Ecological Reserve (DFG), Carlsbad, south side of lagoon just east of Carlsbad Blvd. (S-21) near Brown Park 6 Comment
  UCR159078  Sonchus oleraceus A. C. Sanders, Jennifer Jones 2005-6-22 31154 San Diego South Coast, Buena Vista Lagoon Ecological Reserve (DFG), Carlsbad, north side of lagoon between Carlsbad Blvd. (S-21) and the RR, south of Eaton St. 6 Comment
  UCR159341  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2004-6-24 8729 Santa Barbara Central Coast, between Ocean Park [Rd.] and Pacific Ocean at Surf; NW of Lompoc 15 Comment
  UCR161320  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2005-3-9 9105 San Luis Obispo Central Coast Hills, Irish Hills; See Canyon, 4.4 mi N of San Luis Bay Drive 186 Comment
  UCR161332  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2005-3-5 9007 San Luis Obispo Outer South Coast Ranges, Santa Lucia Wilderness north of Lake Lopez, Upper Lopez Canyon Road, 7.2 mi north of jct with Lopez Road and at Water End Road 174 Comment
  UCR161678  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2005-3-8 9064 San Luis Obispo Central Coast Range, Irish Hills, Prefumo Canyon Road, 4.6 mi west of Los Osos Valley Road 316 Comment
  UCR163839  Sonchus oleraceus A. C. Sanders, R. T. Hawke, et al. 2005-7-4 31359 San Bernardino San Bernardino Mtns., Cienaga Seca, Blue Sky Meadow Science Camp, N and W sides of the meadow 2470 Comment
  UCR165292  Sonchus oleraceus John F. Green 2005-2-2 s.n. Riverside Sonoran (Colorado) Desert, Salton Basin, transect along Coachella Canal right-of-way, between siphons 29 and 30, c. 3 mi east of Desert Beach 24 Comment
  UCR165478  Sonchus oleraceus John F. Green 2005-3-10 s.n. Imperial Sonoran (Colorado) Desert, Salton Basin, transect along Coachella Canal right-of-way, between siphons 9 and 10, c. 4 miles NW of Niland 15 Comment
  UCR166652  Sonchus oleraceus Sarah J. De Groot 2004-3-29 3933 San Bernardino Sonoran (Colorado) Desert, Whipple Mtns: Copper Basin reservoir, ~NE side of lake. MWD property (permit 28 Aug. 2003) 302 Comment
  UCR166869  Sonchus oleraceus Chet McGaugh 2005-2-17 s.n. Imperial Sonoran (Colorado) Desert, E of Salton Sea, NE of Niland, along Coachella Canal between siphons 10-11 30 Comment
  UCR167390  Sonchus oleraceus John F. Green 2005-3-14 s.n. Riverside Sonoran (Colorado) Desert, E of N shore of Salton Sea, NNE of Rancho Dos Palmas, between Coachella Canal siphons 28 and 29 24 Comment
  UCR169305  Sonchus oleraceus Sarah J. De Groot, A. Gatto, C. Stevenson, Constance Baldwin 2003-4-19 2351 San Bernardino Sonoran (Colorado) Desert, Whipple Mountains, canyon on NE side of mountains, off powerline road 287 Comment
  UCR170067  Sonchus oleraceus Scott D. White, Jennifer H. Jones 2005-4-19 10962 Imperial Sonoran Desert, Fish Creek Mountains 213 Comment
  UCR171992  Sonchus oleraceus Margaret R. Mulligan, Joe Barth 2005-7-26 1256 San Diego McGinty Mountain Ecological Reserve (California Fish & Game). SE of city El Cajon. SE of intersection of Willow Glen Dr and Hillsdale Road. San Diego Atlas Square R14 116 Comment
  UCR172136  Sonchus oleraceus A. C. Sanders 2006-5-11 32252 Riverside Warm Springs Valley, N edge of city of Lake Elsinore, 35 acre parcel south of the intersection of Collier Ave. and Riverside Dr., NE of Alberhill Crk., NW of Enterprise Way 389 Comment
  UCR176694  Sonchus oleraceus R. D. Goeden, Don W. Ricker 1980-2-7 s.n. Riverside Riverside, UCR Campus 366 Comment
  UCR182349  Sonchus oleraceus Mitch Provance 2005-5-17 6591 Riverside Warm Springs Valley, Terra Cotta, Nichols Rd. Wetland at Alberhill Creek, c. 100 yards SE of the Durant RR siding, the site bordered along the NW by Pierce St. and on the N by Alberhill Creek, with Baker St. more or less bisecting the collection site 421 Comment
  UCR186712  Sonchus oleraceus Melissa Lippincott 2007-6-28 s.n. Kern Tehachapi Mountains, 1.2 mi. ENE of Grapevine Peak. survey area 2.7D, west of Liveoak Canyon 1159 Comment
  UCR188396  Sonchus oleraceus Michael G. Simpson, Otay Mountain Team 2003-5-3 2407 San Diego Otay Mountain Watershed, Miners Canyon, c. 0.6 miles north of Marron Road 216 Comment
  UCR191421  Sonchus oleraceus A. C. Sanders, Fred M. Roberts 2008-4-8 34771 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, Loma Ridge, SSE of Santiago Reservoir on Harding Truck Trail at Dripping Springs Loop, above Limestone Canyon 495 Comment
  UCR192477  Sonchus oleraceus A. C. Sanders, Fred M. Roberts 2008-3-25 34545 Orange Peninsular Range; Santa Ana Mtns., Weir Canyon, 4 miles ENE of Villa Park at SE edge of Anaheim Hills 259 Comment
  UCR192547  Sonchus oleraceus T. B. Salvato 2008-5-5 3462 San Diego Peninsular Range, c. 10 mi NE of San Diego near Santee, west of Santee Lakes and north of Mast Boulevard, near and southwest of the electrical substation 55 Comment
  UCR201922  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2008-10-9 14235 San Joaquin San Joaquin Valley, junction of Collier Road and CA-88, 1.1 miles north of the junction of CA-12 and CA-88, NE of Lodi 35 Comment
  UCR202035  Sonchus oleraceus Denise Woodard, G. Nuhn 1995-8-21 s.n. Riverside Peninsular Range; Perris-Aguanga Basin, 300 acre parcel at west end of Domenigoni Valley, c. 3 miles south of Winchester on the west side of Winchester Rd. 470 Comment
  UCR202063  Sonchus oleraceus Karin Cleary-Rose 1995-6-22 s.n. Ventura Simi Valley, Marr Ranch, between Tapo and Chivo Canyons, c. 2 miles north of Santa Susana 396 Comment
  UCR203136  Sonchus oleraceus Jon P. Rebman, Jeannie Gregory, K. Rich, M. Wall 2006-5-18 12727 San Diego Monte Vista Ranch (owned by The Nature Conservancy), south of Ramona, northwest of San Vicente Reservoir, south of San Vicente Road along Chuckwagon Road onto the Ranch, western portion of Ranch, along riparian zone north of Daney Canyon. Square M14 302 Comment
  UCR205218  Sonchus oleraceus R. G. Swinney 2006-6-18 8534 Los Angeles San Gabriel Mountains, Devil's Punchbowl County Park, northeast of Punchbowl Road, Sandrock Creek north of the nature center 1402 Comment
  UCR210215  Sonchus oleraceus R. G. Swinney 2008-10-22 9668 Los Angeles San Gabriel Mtns., Azusa, mouth of San Gabriel Canyon, 0.5 mi. upstream from entrance of Old San Gabriel Canyon Rd. at El Encanto 244 Comment
  UCR210223  Sonchus oleraceus R. G. Swinney 2008-8-14 9429 Los Angeles San Gabriel Mtns., South Fork Big Rock Creek at South Fork Campground Spring 1402 Comment
  UCR210425  Sonchus oleraceus R. G. Swinney 2008-11-29 9853 Los Angeles San Gabriel Mtns., mouth of San Gabriel River Canyon, spring 1.5 mi. north of Sierra Madre Ave. on Hwy 39 256 Comment
  UCR210546  Sonchus oleraceus R. G. Swinney 2008-11-7 9777 San Bernardino San Bernardino Valley/ San Gabriel Mtns., Glen Helen Regional Park, marsh to the west of the fishing lakes 610 Comment
  UCR211476  Sonchus oleraceus Jim Andre 2009-4-10 10137 San Bernardino Mojave Desert, Clipper Mountains; southwest end of the Clipper Mtns. along dirt road to Bonanza Mine, 2.2 miles N of Hwy 66 at Danby 559 Comment
  UCR212673  Sonchus oleraceus A. C. Sanders 2010-2-20 37288 Imperial Sonoran (Colorado) Desert; Colorado River Valley, near Haughtelin Lake (old Colorado R. oxbow), NE of Winterhaven between Cocopah (Blackwell) Rd. and lake 39 Comment
  UCR213420  Sonchus oleraceus A. C. Sanders, Dan S. Cooper 2010-3-12 37323 Los Angeles South Coast, Madrona Marsh, Torrance 24 Comment
  UCR219557  Sonchus oleraceus R. G. Swinney 2009-3-28 10212 Los Angeles Transverse Range; San Gabriel Mtns., Monrovia Mountain Park, trail 0-40 m above canyon bottom, from park entrance to 0.4 mi. up canyon 427 Comment
  UCR22055  Sonchus oleraceus Steve Boyd 1980-4-27 137 Riverside Gavilan Hills, Harford Springs County Park, NW corner of the Gavilan plateau 640 Comment
  UCR223419  Sonchus oleraceus Dick Newell, Don Millar 2011-3-1 065 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, Hicks Canyon Haul Road, above Jeffrey Rd. and below Hwy 241 crossing 175 Comment
  UCR227644  Sonchus oleraceus R. F. Thorne 1965-5-10 34507 Los Angeles Channel Islands, Santa Catalina Island, upper end of Gallagher Canyon 412 Comment
  UCR233207  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2010-4-7 15834 San Joaquin Northeast San Joaquin Valley, Collier Road, 0.1 mile west of its junction with CA-88, 1.83 mi. NE (27 deg. ) of Clements 47 Comment
  UCR237816  Sonchus oleraceus Mark A. Elvin 2003-2-2 2290 Orange South Coast, San Joaquin Marsh, UCI campus SSE of intersection of Jamboree Blvd. and Campus Dr. 2 Comment
  UCR242777  Sonchus oleraceus George K. Helmkamp, E. A. Helmkamp 2010-4-14 15863 Solano Northern San Joaquin Valley, Pitt School Road, 3.8 miles south of its junction with I-80 and south of Dixon 21 Comment
  UCR244957  Sonchus oleraceus Jon P. Rebman, W. Schmidtmann, J. Green, V. Marshall,T. Barckley 2012-5-31 24520 San Diego Lake Hodges: south of Escondido; southeast of the intersection of Lake Drive and Beech Lane; northwest side of Lake along the shore 95 Comment
  UCR253621  Sonchus oleraceus George K. Helmkamp 2014-3-11 22537 Nevada Sierra Nevada Mountains Foothills, Auburn, southbound on CA-49 about 0.1 mile east of Lincoln Way 402 Comment
  UCR255105  Sonchus oleraceus Joe Barth 2010-5-16 1018 San Diego South Coast, city of Santee, around hill and area adjacent to baseball fields just north of San Diego River. West of Riverford Road, south of Mast Blvd, east of Ramsgate Way. Atlas Square: P13 137 Comment
  UCR256332  Sonchus oleraceus Duncan S. Bell 2012-3-18 3200 Riverside Sonoran (Colorado) Desert, Mecca Hills; southeastern section of hills; at mouth of Hidden Canyon where drainage is blocked by the Coachella Canal, c. 2.8 air miles southwest of Hidden Spring 20 Comment
  UCR256704  Sonchus oleraceus Duncan S. Bell 2012-3-8 3144 Riverside Mojave Desert, Southern section of the Mecca Hills; north side of the canal, approximately 4.75 air miles southeast of where Box Canyon Road crosses the Coachella Canal 16 Comment
  UCR256872  Sonchus oleraceus R. G. Swinney 2010-6-8 13214 Los Angeles San Gabriel Mountains, Placerita Canyon Natural Area, east entrance (Walker Ranch) from Placerita Cyn. Rd. to canyon bottom and 0.2 miles to the west along Placerita Canyon Trail 573 Comment
  UCR258568  Sonchus oleraceus R. G. Swinney 2010-5-29 13015 Los Angeles San Gabriel Mountains, May Canyon Truck Trail (FSRd. 3N54) crossing of W. Fork May Canyon, north side of rd., c. 1.3 air miles NNW of road's entrance at Veterans Memorial Park in Sylmar 939 Comment
  UCR258831  Sonchus oleraceus R. G. Swinney 2010-4-23 12341 Los Angeles San Gabriel Mountains, lower Loop Canyon, 0.2-0.6 miles upstream from Veterans Park, below US Forest Service boundary 610 Comment
  UCR258958  Sonchus oleraceus R. G. Swinney 2010-2-27 11751 Los Angeles San Gabriel Mountains/Verdugo Mountains, Sunland, SE end of Hansen Dam Basin, Haines Canyon Channel from the I-210 Fwy, north of Wentworth St., to 0.5 mi. to the west at the Big Tujunga Flood Plain 348 Comment
  UCR259402  Sonchus oleraceus R. G. Swinney 2010-8-30 13635 Los Angeles San Gabriel Mountains, East Fork Big Santa Anita Canyon from confluence with Big Santa Anita Canyon bottom/Gabrieleno Trail to 0.5 mi. upstream 744 Comment
  UCR259586  Sonchus oleraceus R. G. Swinney 2010-4-15 12225 Los Angeles San Gabriel Mountains, Lime Kiln Canyon, 0.25-0.7 miles east of Pacoima Wash 610 Comment
  UCR259927  Sonchus oleraceus R. G. Swinney 2010-4-1 12150 Los Angeles San Gabriel Mountains, Pacoima 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 399 Comment
  UCR260007  Sonchus oleraceus R. G. Swinney 2010-3-24 12091 Los Angeles San Gabriel Mountains, Lopez Canyon above Pacoima, 1.7 miles west of Kagel Cyn. Road on west side of Lopez Canyon Rd. 463 Comment
  UCR260027  Sonchus oleraceus R. G. Swinney 2010-4-21 12326 Los Angeles San Gabriel Mountains, Pacoima, 0.4-0.6 miles north of Gavina Ave. in Pacoima Wash 457 Comment
  UCR260393  Sonchus oleraceus R. G. Swinney 2010-6-21 13283 Los Angeles San Gabriel Mountains, Angeles 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 902 Comment
  UCR26160  Sonchus oleraceus John C. Roos 1949-10-1 4686 Orange South Coast, Doheny Beach 0 Comment
  UCR263931  Sonchus oleraceus Joe Barth 2011-2-13 1111 San Diego Sonoran (Colorado) Desert, between 649 and 655 Palm Canyon Dr., Borrego Springs 185 Comment
  UCR266454  Sonchus oleraceus Mitch Provance, Callen Huff 2009-4-7 10336 Kern Foothills of the Southern Sierra Nevada., White Wolf Grade, c. 6 miles ENE of Arvin, N side of Bear Mountain Blvd. (Hwy 223) 362 Comment
  UCR269769  Sonchus oleraceus A. C. Sanders, Jim Malusa 2016-3-7 42121 Imperial Sonoran (Colorado) Desert, Chocolate Mountains Aerial Gunnery Range, c. 3.5 km NE (66 deg. ) of Salvation Pass well site 398 Comment
  UCR269779  Sonchus oleraceus A. C. Sanders, Jim Malusa 2016-3-17 42339 Imperial Sonoran (Colorado) Desert, Chuckwalla Bench just inside Chocolate Mountains Aerial Gunnery Range, along old Niland-Blythe Rd. 1.2 km east of Surveyors Pass 629 Comment
  UCR270171  Sonchus oleraceus A. C. Sanders, Jeanne Marie Acceturo & participants in Jepson Workshop 2016-4-2 42388 Riverside Peninsular Range, UC Emerson Oaks Reserve, c. 8 miles southeast of Temecula, south of Hwy 79 at E end of Pauba Valley, south end of Los Caballos Road, vicinity of lab and old Emerson house site 488 Comment
  UCR275930  Sonchus oleraceus T. B. Salvato, Sandra Murcia 2006-5-9 1397 San Bernardino San Bernardino Valley, Lower Cajon Pass, Glen Helen Parkway where it crosses Cajon Wash, between Glen Helen Road and Cajon Blvd. 614 Comment
  UCR280569  Sonchus oleraceus R. G. Swinney 2014-5-13 16490 Los Angeles San Gabriel Mountains, Glendora, 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 354 Comment
  UCR281336  Sonchus oleraceus R. G. Swinney 2014-5-21 16628 Los Angeles San Gabriel Mountains, Glendora, 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 '70s) Whitcomb Trail 549 Comment
  UCR281363  Sonchus oleraceus R. G. Swinney 2014-5-15 16516 Los Angeles San Gabriel Mountains, Azusa Peak, 0.06 mile south of Glendora Ridge Motorway, 1.34 miles due east of Hwy. 39, 0.15 mile east of Garcia Trailhead 630 Comment
  UCR281427  Sonchus oleraceus R. G. Swinney 2014-5-27 16668 Los Angeles San Gabriel Mountains, Glendora, 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 445 Comment
  UCR281610  Sonchus oleraceus R. G. Swinney 2014-5-19 16575 Los Angeles San Gabriel Mountains, Glendora, 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 515 Comment
  UCR3299  Sonchus oleraceus T. R. Plumb 1964-2-15 s.n. Riverside Upper Santa Ana River/San Bernardino Valley Region, Riverisde, near E side of Fire Lab 267 Comment
  UCR33603  Sonchus oleraceus Faulkner 1978-4-28 472 San Bernardino Eastern Colorado Desert, 1 mile east of Needles to 2 miles SE along the Colorado River 146 Comment
  UCR41347  Sonchus oleraceus N. M. Fellows, A. C. Sanders 1985-5-7 185 Riverside San Jacinto Mountains, Oasis de los Osos Preserve, off Snow Creek Canyon at the N foot of the San Jacinto Mountains, 1 mi west of Snow Creek Village 488 Comment
  UCR48135  Sonchus oleraceus Michael Theroux 1983-4-10 519 Kern S Sierra Nevada Foothills, Mouth of Kern Canyon, SE of Hwy 178 671 Comment
  UCR49975  Sonchus oleraceus A. C. Sanders 1987-11-28 7548 San Bernardino San Bernardino Valley, Glen Helen Sheriff's Training Facility, lower Lytle Creek Wash between Verdemont Ranch and Glen Helen Rehabilitation Facility 520 Comment
  UCR77139  Sonchus oleraceus A. C. Sanders, E. J. Lott 1993-5-30 14126 San Bernardino Eastern Mojave Desert, Cornfield Spring Canyon, W slope of Providence Mtns, 4 mi SE of Kelso 976 Comment
  UCR81685  Sonchus oleraceus J. M. Stewart 1994-5-2 854 Riverside Western Colorado Desert, Coachella Valley, Thermal, Filmore Street & Avenue 66 Comment
  UCR84660  Sonchus oleraceus Scott D. White, S. Ogg 1994-4-21 1991 Riverside San Bernardino Mtns, Millard Canyon, near stream crossing of Forest Service Road 2S05, c. 4 miles south of Bear Wallow Spring 917 Comment
  UCR92283  Sonchus oleraceus Scott D. White, S. Ogg 1994-10-17 2497 Riverside City of Temecula, Murrieta Creek channel at confluence with Santa Gertrudis Creek 320 Comment
  UCR92320  Sonchus oleraceus Scott D. White 1995-2-7 2535 Los Angeles San Gabriel Mtns., Santa Susana Mtns, Sunshine Canyon, directly west of Hwy I-5 just south of interchange with Hwy 14 457 Comment
  UCR92614  Sonchus oleraceus Scott D. White 1994-3-29 1937 Riverside Beaumont Badlands, near county dump and old DeAnza Cycle Park, north of Hwy 60 701 Comment
  UCR97167  Sonchus oleraceus Scott D. White 1992-8-15 678 San Bernardino San Bernardino Mtns, Mill Creek Canyon, N-facing drainage above Forest Falls, along Rattlesnake Creek (known locally as 'Snow Canyon'), near town water tanks 1980 Comment
  UCR97843  Sonchus oleraceus Scott D. White, B. Leatherman 1997-4-3 4873 Fresno Central Valley, Kings River area: east of Centerville, just south of State Hwy 180 (Kings Canyon Road) at gravel quarry 122 Comment
  UCSB12595  Sonchus oleraceus Corfman, Nancy 1961-3-4 Imperial 2 miles south, 2 miles west, 1/2 mile south of McCabe School Comment
  UCSB13494  Sonchus oleraceus Breedlove, Dennis 1961-4-23 Santa Barbara Along the Alamo Pintado Creek from 7-8 miles north of Los Olivos; base of Figueroa Mountain, Birabent Canyon, San Rafael Range 426 Comment
  UCSB22566  Sonchus oleraceus Whistler, Art 1967-5-5 Santa Barbara Purisima Hills locality is 0.7 miles (via a dirt road) from State Hwy. 1, 0.6 miles south of the Hwy's intersection with the Los Alamos-Casmalia Road Comment
  UCSB32519  Sonchus oleraceus Smith, Owen 1977-3-14 Santa Barbara On 6639 Abrego Road in Isla Vista 6 Comment
  UCSB32676  Sonchus oleraceus Faraday, Christopher 1978-6-2 Santa Barbara Fields at El Colegio Road and Camino Corto Road Comment
  UCSB363557  Sonchus oleraceus M. O. Bagley 1973-5-27 44 Santa Barbara collected 100 yds W, at UCSB Main Campus Coal Oil Point Reserve - , and UCSB Campus 0 Comment
  UCSB36357  Sonchus oleraceus Bagley, Mark 1973-5-27 Santa Barbara 100 yards west of Coal Oil Point Reserve, UCSB Comment
  UCSB36444  Sonchus oleraceus Steele, Kelly; Koehler, D.; Gordon, Patricia 1980-4-30 Santa Barbara Southwest of intersection of Storke Road and El Colegio, and adjacent to Isla Vista, on northern portion of West Campus, UCSB Comment
  UCSB39162  Sonchus oleraceus Ferren, Wayne 1979-3-22 Santa Barbara Margin of central portion of Apple Rd., Carpinteria Salt Marsh, Carpinteria Comment
  UCSB39166  Sonchus oleraceus Ferren, Wayne 1979-5-8 Santa Barbara Ca. 7 m. W of berm along W bank of Santa Monica Creek, Carpinteria Salt Marsh, Carpinteria Comment
  UCSB39177  Sonchus oleraceus Ferren, Wayne 1979-3-22 Santa Barbara W of N end of Apple Rd., Carpinteria Salt Marsh, Carpinteria Comment
  UCSB40132  Sonchus oleraceus R. B. Norton 1979-8-4 159 b Santa Barbara collected near the Events Facilities Building, in UCSB Main Campus Events Facilities Building, and UCSB Campus Comment
  UCSB43204  Sonchus oleraceus Fletcher, Martin 1979-10-11 Santa Barbara On the rim of the Sacate Creek outlet 1 Comment
  UCSB43370  Sonchus oleraceus Ferren, Wayne 1980-5-12 Santa Barbara Just W of Apple Rd., Carpinteria Salt Marsh Comment
  UCSB47457  Sonchus oleraceus Steele, Kelly 1983-4-20 Kern Western San Joaquin Valley, along Lokern Road, 3.4 miles west of Buttonwillow; (T29S R23E S20) 83 Comment
  UCSB47898  Sonchus oleraceus Forbes, Holly 1983-2-20 Santa Barbara La Purisima Mission State Historic Park. 2 km NE of Lompoc City Limit; on east side of upper reservoir Comment
  UCSB48372  Sonchus oleraceus Roberts, Jr., Fred 1982-5-22 Orange Dana Point: jct. of Stone Hill Dr. & Selva Rd.; 1.0 km ESE Dana Hills High School; 1.7 km SW Marco Forster Junior High School 40 Comment
  UCSB52530  Sonchus oleraceus Magney, David 1985-3-25 Santa Barbara Along Ridge Road on Santa Cruz Island 179 Comment
  UCSB53227  Sonchus oleraceus Magney, David; Burgess, Rick 1983-10-23 Ventura 12 miles N of Ojai, western Transverse Ranges T5N, R23W, S. 1, 2, & 3, Wheeler Springs Quadrangle; at eastern edge of ridge along Hwy. 33 (mile marker 27.43) 1097 Comment
  UCSB53616  Sonchus oleraceus Reisentz, Paul 1979-4-22 Ventura Mirror Lake, 1/2 mile south of intersection of Hwy. 150 and Hwy 33, 3 miles SW of Ojai, 12 miles N of Ventura 190 Comment
  UCSB61321  Sonchus oleraceus Parikh, Anuja; Gale, Nathan 1994-5-26 Santa Barbara On Abandoned Road 2, Vandenberg Air Force Base 76 Comment
  UCSB6700  Sonchus oleraceus Kamb, Peter 1948-2-1 Riverside Valley in the Jurupa Mts. west of Colton, San Bernardino/Riverside County 304 Comment
  UCSB6735  Sonchus oleraceus Roger Krogen 1957-1-1 157 Santa Barbara collected near the Science Building, in the UCSB Main Campus UCSB Main Campus Comment
  UCSB7369  Sonchus oleraceus Ullman, Sydney 1956-3-12 Santa Barbara Bank of estuary at Arroyo Burro Beach Comment
  UCSB7433  Sonchus oleraceus Clements, Frederic; Clements, Edith 1914-5-14 San Diego La Jolla Comment
  UCSB7434  Sonchus oleraceus Clements, Frederic; Clements, Edith 1914-5-14 San Diego Howard Canyon, La Jolla Comment
  UCSC000852  Sonchus oleraceus Ivar Tidestrom June 1893 s.n. Monterey Pacific Grove Comment
  UCSC001618  Sonchus oleraceus Charisse Bickford 1979-4-14 s.n. Monterey Found in Mixed Hardwood Woodland on the South Ridge Access road. South Ridge Access road. - Landels-Hill Big Creek Reserve, Santa Lucia Mountains 488 Comment
  UCSC008991  Sonchus oleraceus Al Keuter 2012-11-23 AK 00 -049 Santa Cruz Along outside edge of tennis court fence, in flower bed; Scotts Valley 196 Comment
  CAS-BOT-BC374556  Sonchus oleraceus S. Parnay Mar. s.n. Unknown Unspecified Comment
  CAS-BOT-BC374557  Sonchus oleraceus John Thomas Howell 1954-5-16 s.n. El Dorado 2 miles nw. of Placerville Comment
  CAS-BOT-BC374560  Sonchus oleraceus John Thomas Howell 1958-5-29 33625 Inyo Bishop 1264 Comment
  CAS-BOT-BC374561  Sonchus oleraceus J. W. Blankinship 1923-6-17 s.n. Lake Kelseyville Comment
  CAS-BOT-BC374565  Sonchus oleraceus John Thomas Howell 1973-7-25 49971 Merced Near Gustine 30 Comment
  CAS-BOT-BC374566  Sonchus oleraceus Gordon H. True 1961-7-14 s.n. Nevada G. H. True Ranch, 7 miles southwest of Grass Valley on McCourtney Road 548 Comment
  CAS-BOT-BC374571  Sonchus oleraceus Chester Dudley 1927-9-12 s.n. Stanislaus Modesta [Modesto] Comment
  CAS-BOT-BC374572  Sonchus oleraceus Lowell Ahart 1982-10-11 3873 Sutter Below the bridge on Pass Road, a little east of the Gass [Gas] Compression Station, Sutter Buttes 50 Comment
  CAS-BOT-BC374573  Sonchus oleraceus Lowell Ahart 1982-6-20 3632 Sutter South-east of the Dean Cabin, Dean Ranch, Sutter Buttes 350 Comment
  CAS-BOT-BC374577  Sonchus oleraceus Mrs. W. J. Williamson 1919-5-21 145 Tuolumne Spring Gulch near Bear Creek 320 Comment
  CAS-BOT-BC374578  Sonchus oleraceus Mrs. W. J. Williamson 1919-5-21 145 Tuolumne Spring Gulch near Bear Creek 320 Comment
  CAS-BOT-BC374579  Sonchus oleraceus A. J. Bassinger 1920-10-14 s.n. Yolo Conaway ranch, Woodland Comment
  CAS-BOT-BC374581  Sonchus oleraceus Paul F. Covel 1937-9-16 673 Alameda Oak. Hills Comment
  CAS-BOT-BC374582  Sonchus oleraceus John Thomas Howell 1954-3-1 29129 Alameda Allston Way near Grove St., Berkeley Comment
  CAS-BOT-BC374583  Sonchus oleraceus Cherie L. Wetzel 1969-5-8 853 Alameda Niles Canyon and Vicinity. Joyland Park Comment
  CAS-BOT-BC374587  Sonchus oleraceus Cherie L. Wetzel 1969-8-28 1019 Alameda Niles Canyon and Vicinity. Alameda Creek at Mission Blvd. Comment
  CAS-BOT-BC374588  Sonchus oleraceus Cherie L. Wetzel 1969-4-1 617 Alameda Niles Canyon and Vicinity. Muller's ranch Comment
  CAS-BOT-BC374589  Sonchus oleraceus Cherie L. Wetzel 1969-9-23 1053 Alameda Niles Canyon and Vicinity. Shillings Park Comment
  CAS-BOT-BC374590  Sonchus oleraceus Cherie L. Wetzel 1969-10-26 1100 Alameda Niles Canyon and Vicinity. Shilling's Park. Growing at edge of Alameda Creek Comment
  CAS-BOT-BC374591  Sonchus oleraceus Cherie L. Wetzel 1969-4-1 625 Alameda Niles Canyon and Vicinity. Muller's ranch Comment
  CAS-BOT-BC374592  Sonchus oleraceus Ira L. Wiggins 1930-4-18 4608 Contra Costa Jersey Island Comment
  CAS-BOT-BC374593  Sonchus oleraceus Walter Knight; Irja Knight; J. T. Howell; E. McClintock; et al 1978-9-5 3225 Contra Costa Browns Island. Sandy Knob Comment
  CAS-BOT-BC374594  Sonchus oleraceus R. E. Frenkel 1963-8-18 263 Contra Costa On Giant Road, 0.4 mile north of ATSF RR crossing, Richmond 15 Comment
  CAS-BOT-BC374595  Sonchus oleraceus Huron H. Smith 1911-6-20 3907 Humboldt Vances C. 20 Comment
  CAS-BOT-BC374596  Sonchus oleraceus F. J. Kirby 1958-7-1 s.n. Humboldt West of Bridgeville 152 Comment
  CAS-BOT-BC374601  Sonchus oleraceus John Thomas Howell 1976-5-16 51630 Kern Delano 97 Comment
  CAS-BOT-BC374602  Sonchus oleraceus John Thomas Howell 1962-4-9 37088 Kern Kernville Comment
  CAS-BOT-BC374603  Sonchus oleraceus Noraine Meng 1967-5-22 402 Kern Naval Weapons Center, China Lake 609 Comment
  CAS-BOT-BC374604  Sonchus oleraceus Noraine Meng 1967-5-22 402 Kern Naval Weapons Center, China Lake 609 Comment
  CAS-BOT-BC374605  Sonchus oleraceus Ernest C. Twisselmann 1965-4-21 10582 Kern Tehachapi Mountains. Tejon Canyon 1013 Comment
  CAS-BOT-BC374606  Sonchus oleraceus Ernest C. Twisselmann 1965-4-21 10582 Kern Tehachapi Mountains. Tejon Canyon 1013 Comment
  CAS-BOT-BC374608  Sonchus oleraceus C. W. Tilforth 1969-7-17 210 Los Angeles Rancho Santa Ana Bot. Gard., Claremont Comment
  CAS-BOT-BC374611  Sonchus oleraceus M. B. Dunkle 1940-3-21 7450 Los Angeles East slope, Santa Barbara Island Comment
  CAS-BOT-BC374612  Sonchus oleraceus Carl B. Wolf 1932-5-9 3422 Los Angeles Santa Catalina Island. Avalon. Near Bathhouse 7 Comment
  CAS-BOT-BC374613  Sonchus oleraceus L. R. Abrams; I. L. Wiggins 1931-7-3 297 Los Angeles Channel Islands. Santa Barbara Island Comment
  CAS-BOT-BC374614  Sonchus oleraceus E. R. Blakley 1962-6-10 5259 Los Angeles San Clemente Island 15 Comment
  CAS-BOT-BC374615  Sonchus oleraceus Wesley O. Griesel 1961-1-28 s.n. Los Angeles La Canada [Canada] 457 Comment
  CAS-BOT-BC374617  Sonchus oleraceus John Thomas Howell 1964-6-29 40767 San Luis Obispo Cambria Comment
  CAS-BOT-BC374618  Sonchus oleraceus J. T. Howell 1961-4-14 36500 San Luis Obispo Santa Lucia Mountains. Cambria Comment
  CAS-BOT-BC374619  Sonchus oleraceus Ernest C. Twisselmann 1967-9-9 13689 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Ortega Spring, Palo Prieta Canyon 598 Comment
  CAS-BOT-BC374627  Sonchus oleraceus Clare B. Hardham 1957-7-15 2464 San Luis Obispo Santa Lucia Mountains. Graves Creek, Del Rio Road Comment
  CAS-BOT-BC374628  Sonchus oleraceus Clare B. Hardham 1957-7-15 2463 San Luis Obispo Santa Lucia Mountains. Graves Creek, Del Rio Road Comment
  CAS-BOT-BC374630  Sonchus oleraceus Roxana S. Ferris 1954-4-23 12730 Marin Ditches near Dillon's Beach Post Office Comment
  CAS-BOT-BC374634  Sonchus oleraceus Javier Penalosa 1961-7-8 1932 Marin Tiburon Peninsula. Tiburon Comment
  CAS-BOT-BC374635  Sonchus oleraceus Javier Penalosa 1961-2-25 1068 Marin Tiburon Peninsula. Tiburon. Along Tiburon Blvd. near NWPRR Water Tower Comment
  CAS-BOT-BC374636  Sonchus oleraceus Javier Penalosa 1961-3-25 1174 Marin Tiburon Peninsula. Tiburon. Near Recreation Center below St. Hilary's Church Comment
  CAS-BOT-BC374637  Sonchus oleraceus Javier Penalosa 1961-4-16 1311 Marin Tiburon Peninsula. NWPRR yard in Tiburon Comment
  CAS-BOT-BC374639  Sonchus oleraceus J. T. Howell 1990-9-28 s.n. Marin Terra Linda - in weedy Northgate planter Comment
  CAS-BOT-BC374640  Sonchus oleraceus Clare R. Wheeler 1979-4-3 825 Mendocino Wheeler Ranch. 6 mi. SW of Yorkville 487 Comment
  CAS-BOT-BC374641  Sonchus oleraceus Clare R. Wheeler 1978-6-15 419 Mendocino Iverson Landing. Coastal bluff 5 mi. S. of Pt. Arena on Hwy 1 15 Comment
  CAS-BOT-BC374642  Sonchus oleraceus Clare B. Hardham 1968-6-10 16659 Mendocino 2 miles north of Point Arena between Coast Highway and the beach 15 Comment
  CAS-BOT-BC374643  Sonchus oleraceus Roxana S. Ferris; W. R. Ernst 1956-7-8 13027 Monterey By Tularcitos Creek, Carmel Valley road, 6 mi. E of Carmel Valley Inn at junction of Salinas cut-off Comment
  CAS-BOT-BC374644  Sonchus oleraceus Cathy Genetti; Eric Engles 1982-4-18 183 Monterey Landels-Hill Big Creek Reserve, Gamboa Point Section. Santa Lucia Mountains. Found along Highway 1 near a roadside pull-off south of Vicente Creek Comment
  CAS-BOT-BC374645  Sonchus oleraceus Josephine D. Randall 1909-12-30 s.n. Monterey Monterey Peninsula. Near trail from Carmel to Monterey Comment
  CAS-BOT-BC374646  Sonchus oleraceus Josephine D. Randall 1911-3-27 s.n. Monterey Monterey Peninsula. Between Moss Beach & Pacific Grove Comment
  CAS-BOT-BC374648  Sonchus oleraceus Alice D. Randall 1910-2-19 28 Monterey Monterey Peninsula. Carmel-by-the-Sea Comment
  CAS-BOT-BC374651  Sonchus oleraceus Beatrice F. Howitt 1956-6-3 946 Monterey Santa Lucia Mountains. By side of Pine Ridge Trail from Big Sur Park to Ventana Camp Comment
  CAS-BOT-BC374652  Sonchus oleraceus Beatrice F. Howitt 1958-5-29 1054 Monterey Santa Lucia Mountains. By side of trail in Del Monte Forest Comment
  CAS-BOT-BC374653  Sonchus oleraceus Beatrice F. Howitt 1955-3-8 32 Monterey Monterey Peninsula. In Del Monte Park, Pacific Grove Comment
  CAS-BOT-BC374656  Sonchus oleraceus Peter H. Raven 1954-2-22 6396 Napa Saint Helena 60 Comment
  CAS-BOT-BC374657  Sonchus oleraceus Kate Eastwood Phelps 1930-7-1 s.n. Napa Sanitarium, Napa Valley Comment
  CAS-BOT-BC374658  Sonchus oleraceus Ira L. Wiggins 1966-2-1 20406 Orange Orange grove just east of Letters & Science building, California State College at Fullerton Comment
  CAS-BOT-BC374659  Sonchus oleraceus Ira L. Wiggins 1966-3-5 20514 Orange Field about 1/2 mi. W. of El Toro Post Office, along Highway S-18 Comment
  CAS-BOT-BC374662  Sonchus oleraceus Ira L. Wiggins 1965-11-6 20334 Orange West side of Atwood Comment
  CAS-BOT-BC374664  Sonchus oleraceus W. P. Sanders 1969-7-4 s.n. Orange Costa Mesa Comment
  CAS-BOT-BC374665  Sonchus oleraceus Walter Knight; Irja Knight; John Thomas Howell 1966-7-28 1466 Plumas Butterfly Botanical Area and Vicinity. In Butterfly Canyon 990 Comment
  CAS-BOT-BC374666  Sonchus oleraceus John Thomas Howell 1951-6-29 27755 Plumas Feather River Canyon 548 Comment
  CAS-BOT-BC374667  Sonchus oleraceus John Thomas Howell 1966-7-29 42023 Plumas Quincy 1036 Comment
  CAS-BOT-BC374670  Sonchus oleraceus J. H. Thomas 1958-5-13 7196 San Francisco San Francisco. Western end of Golden Gate Park near the Sloop Gjoa. Area about sea level Comment
  CAS-BOT-BC374672  Sonchus oleraceus Ernest C. Twisselmann 1956-9-8 3124 San Francisco Mt. Davidson 291 Comment
  CAS-BOT-BC374674  Sonchus oleraceus Alice Eastwood 1915-8-1 s.n. San Francisco Vacant lot on Sansome St., San Francisco Comment
  CAS-BOT-BC374675  Sonchus oleraceus Alice Eastwood 1926-10-15 s.n. San Francisco Farallon Isl. Comment
  CAS-BOT-BC374680  Sonchus oleraceus John Thomas Howell 1956-4-22 31269 San Francisco Embarcadero at Powell St., San Francisco Comment
  CAS-BOT-BC374684  Sonchus oleraceus Peter Rubtzoff 1956-11-9 3062 San Francisco San Francisco. Presidio. Ground near Lobos Creek betw. 16th Ave. and Llincoln Boulevard Comment
  CAS-BOT-BC374685  Sonchus oleraceus Peter Rubtzoff 1952-5-14 1050 San Francisco San Francisco. Sand dunes at 37th Avenue betw. Ortega and Quintara streets Comment
  CAS-BOT-BC374686  Sonchus oleraceus Peter Rubtzoff 1957-4-27 3271 San Francisco San Francisco. Presidio. Ground near Lobos Creek, between 16th Ave. and Lincoln Blvd. Comment
  CAS-BOT-BC374687  Sonchus oleraceus Peter Rubtzoff 1957-7-14 3448 San Francisco San Francisco. San Miguel Hills. Bottom of canyon east of O'Shaughnessy Blvd. Comment
  CAS-BOT-BC374689  Sonchus oleraceus Peter Rubtzoff 1956-11-14 3083 San Francisco San Francisco. South of Stanley Drive, east of Lake Merced Comment
  CAS-BOT-BC374690  Sonchus oleraceus Peter Rubtzoff 1957-9-15 3554 San Francisco San Francisco. Flat behind the beach near Lands End Comment
  CAS-BOT-BC374692  Sonchus oleraceus Peter H. Raven 1954-4-12 6561 San Francisco Sigmund Stern Grove, San Francisco Comment
  CAS-BOT-BC374693  Sonchus oleraceus Lewis S. Rose 1957-3-23 57039 San Francisco 876 Francisco St., n. slope of Russian Hill Comment
  CAS-BOT-BC374694  Sonchus oleraceus Terrence J. Merkel 1950-5-21 45 San Francisco Between Lake Merced and the San Francisco Golf Club, San Francisco 30 Comment
  CAS-BOT-BC374696  Sonchus oleraceus Ira L. Wiggins 1979-8-26 22247 San Mateo Alley between Central and Woodland Avenues, running from Pope to Gilbert Streets, Menlo Park Comment
  CAS-BOT-BC374697  Sonchus oleraceus Ira L. Wiggins 1979-8-26 22247 San Mateo Alley between Central and Woodland Avenues, running from Pope to Gilbert Streets, Menlo Park Comment
  CAS-BOT-BC374698  Sonchus oleraceus Ira L. Wiggins 1973-7-29 22057 San Mateo Lower part of northerly bank of San Francisquito Creek, ca 75 m upstream from Pope Street bridge Comment
  CAS-BOT-BC374704  Sonchus oleraceus Margaret A. Barry 1938-4-21 240 San Mateo Coal Mine Ridge Comment
  CAS-BOT-BC374705  Sonchus oleraceus Philip Wheeler 1965-6-16 s.n. San Mateo San Bruno Mountain. Colma Canyon Comment
  CAS-BOT-BC374707  Sonchus oleraceus Walter Knight; Irja Knight 1963-8-5 s.n. San Mateo San Bruno Mountain. Horseshoe Ridge Comment
  CAS-BOT-BC374709  Sonchus oleraceus Elizabeth McClintock 1963-3-14 s.n. San Mateo San Bruno Mountain. South Power Line Ridge Comment
  CAS-BOT-BC374711  Sonchus oleraceus Herman Knoche 1919-8-15 Series A, No. 2263 Santa Barbara Santa Cruz Island Comment
  CAS-BOT-BC374712  Sonchus oleraceus Herman Knoche 1919-7-25 Series A, No. 1179 Santa Barbara San Miguel Island, Tuff Hills Schuyler's [Cuyler's ?] Harbor Comment
  CAS-BOT-BC374717  Sonchus oleraceus Ralph Hoffmann 1930-4-10 s.n. Santa Barbara San Miguel Island Comment
  CAS-BOT-BC374719  Sonchus oleraceus Ira L. Wiggins 1981-4-24 22273 Santa Clara Top of bank of San Francisquito Creek along Palo Alto Ave., between Seneca & Hale Streets, Palo Alto Comment
  CAS-BOT-BC374720  Sonchus oleraceus Ira L. Wiggins 1928-6-5 2954 Santa Clara At Museum, Stanford University Campus Comment
  CAS-BOT-BC374721  Sonchus oleraceus John H. Thomas 1961-6-28 9573 Santa Clara Stanford University Campus. Near Branner Hall Comment
  CAS-BOT-BC374722  Sonchus oleraceus John H. Thomas 1956-9-6 6436 A Santa Clara Palo Alto. Near Alma St. and Homer St. Comment
  CAS-BOT-BC374724  Sonchus oleraceus W. R. Dudley 1906-5-28 s.n. Santa Clara Santa Cruz Mountain Peninsula. Court back of Library, Stanford University Comment
  CAS-BOT-BC374725  Sonchus oleraceus W. R. Dudley 1895-4-19 s.n. Santa Clara Santa Cruz Mountain Peninsula. Near Wright's Comment
  CAS-BOT-BC374727  Sonchus oleraceus E. W. Rust 1906-11-2 50 Santa Clara Vicinity of Stanford University. Stanford Univ. Comment
  CAS-BOT-BC374728  Sonchus oleraceus S. D. Haley 1908-10-1 s.n. Santa Clara Near Cooley's Landing, Palo Alto Comment
  CAS-BOT-BC374729  Sonchus oleraceus Robert Martineau 1974-5-12 211 Santa Clara Foothills Park, City of Palo Alto. Foothills of the eastern side of the Santa Cruz Mountains. Five miles south of center of Palo Alto. Los Trancos Trail 548 Comment
  CAS-BOT-BC374731  Sonchus oleraceus J. H. Thomas 1950-5-28 1938 A Santa Cruz Between Big Basin Junction and Saratoga Summit Comment
  CAS-BOT-BC374733  Sonchus oleraceus J. H. Thomas 1950-5-28 1938 Santa Cruz Between Saratoga Summit and Big Basin Junction Comment
  CAS-BOT-BC374744  Sonchus oleraceus D. E. Breedlove 1983-5-9 58696 Sonoma Pepperwood Ranch W of Knights Valley Comment
  CAS-BOT-BC374745  Sonchus oleraceus Henry M. Pollard 1946-4-27 s.n. Ventura Ventura River Basin. Kennedy Canyon Comment
  CAS-BOT-BC374747  Sonchus oleraceus Henry M. Pollard 1964-4-29 s.n. Ventura Ventura River Basin. North slope of Red Mountain near Foster Park Comment
  CAS-BOT-BC374749  Sonchus oleraceus John Thomas Howell 1932-3-13 8229 Ventura San Nicolas Island Comment
  CAS-BOT-BC374750  Sonchus oleraceus E. R. Blakley 1959-4-24 B- 2746 Ventura Between the boat dock and the village. East Anacapa Island 60 Comment
  CAS-BOT-BC374751  Sonchus oleraceus Nora Pettibone; Frank W. Hubby 1895-3-11 s.n. Ventura Ojai Valley and Vicinity. Whale Rock Comment
  CATA2796  Sonchus oleraceus Robert F. Thorne, C. W. Tilforth, Bob Given, et al. 1979-5-1 52744 Santa Barbara San Miguel Island: On dry, grassy lake bed near airstrip on west side of island 121 Comment
  CATA2797  Sonchus oleraceus Michael R. Benedict 1970-4-22 Ventura East Anacapa Island: North of Coast Guard Compound, east part of island 0 Comment
  CATA2798  Sonchus oleraceus Michael R. Benedict 1968-11-2 Santa Barbara Santa Cruz Island: Buena Vista 0 Comment
  CATA2801  Sonchus oleraceus Robert F. Thorne, G. Wallace, M. Hoefs 1977-4-28 48956 Santa Barbara Santa Rosa Island: South side at old military base at Johnsons Lee 12 Comment
  CDA32940  Sonchus oleraceus D. Barbe & P. Hiatt 1979-5-1 Sonoma South of Asti; on Asti Road, 0.45 mile south of Washington School Road. 0 Comment
  CDA32941  Sonchus oleraceus Doug Barbe & Phyllis Hiatt 1979-5-2 Colusa Williams; waste ground by Shell station. 0 Comment
  HSC12548  Sonchus oleraceus C. Kline 1970-11-15 77 Humboldt 4.2 mi. N of Trinidad, olf Hwy. 101 Comment
  HSC40944  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC60123  Sonchus oleraceus M. A. Baker 1978-5-20 559 Humboldt Hoopa Indian Reservation Comment
  HSC6222  Sonchus oleraceus J. R. Bernard 1963-4-8 Monterey Laguna Seca, half way between Salinas and Monterey. Comment
  HSC6223  Sonchus oleraceus J. W. Johnson 1962-4-8 1216 Humboldt Arcata, Mad River Co. Park Comment
  HSC6224  Sonchus oleraceus J. W. Johnson 1961-8-17 1043 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC67888  Sonchus oleraceus J. P. Smith 1973-5-26 6862 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC89465  Sonchus oleraceus P. A. Daly 1986-3-12 69 Humboldt Trinidad Head, along trail 61 Comment
  HSC91903  Sonchus oleraceus E. Mackey 1986-11-2 Humboldt Patrick's Point State Park; by road to Palmer's Point Comment
  IRVC27228  Sonchus oleraceus A. C. Sanders, Mark A. Elvin, et al. 2003-5-4 26537 San Diego Otay Mountain, ridge ca. 2-3 miles east of the peak, around end of jeep trail Peninsular Range 945 Comment
  IRVC27898  Sonchus oleraceus A. C. Sanders, Mark A. Elvin 2005-4-22 29650 San Diego Batiquitos Lagoon Ecological Reserve, N side of lagoon, E of I-5 fwy, along trail passt the nature center. Southern Coastal 0 Comment
  IRVC29224  Sonchus oleraceus G. K. Helmkamp, E. A. Helmkamp 2004-10-8 8838 San Luis Obispo Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek Central Coast 136 Comment
  JEPS30659  Sonchus oleraceus Peter H. Raven and Henry J. Thompson 1959-9-18 14447 Los Angeles University of California, West Los Angeles Santa Monica Mountains, University of California, West Los A 129 Comment
  JEPS84554  Sonchus oleraceus John W. Willoughby 1976-5-18 1718 Solano near Mix Canyon Road (Mix Canyon, Vaca Mountains); Vaca Mountaina, Mix Canyon 243 Comment
  JROH1260  Sonchus oleraceus John H. Thomas 1964-11-29 10534 San Mateo Jasper Ridge Biological Preserve, Stanford University; W end of Searsville Dam Comment
  JROH1261  Sonchus oleraceus John H. Thomas 1970-7-5 15656 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1262  Sonchus oleraceus John H. Thomas 1974-4-6 17092 San Mateo Jasper Ridge Biological Preserve, Stanford University; west side of dam Comment
  LA105051  Sonchus oleraceus Barry A. Prigge; 1988-7-3 8217 Los Angeles Santa 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 313 Comment
  LA105583  Sonchus oleraceus Barry A. Prigge; 1989-5-10 8708 Los Angeles SANTA MONICA MOUNTAINS, Point Dume, above Dume Cove. 30 Comment
  LA200269  Sonchus oleraceus Norman A. Cole; May 1964 350 Ventura Santa Monica Mountains, Point Mugu Beach 0 Comment
  LA201350  Sonchus oleraceus Arthur C. Gibson; 2001-4-20 4129 Ventura Comment
  LA209937  Sonchus oleraceus Norman A. Cole; May 1964 350 b Los Angeles Santa Monica Mountains, 9.7 mi from Pacific Coast Hwy along Piuma Rd 365 Comment
  LA209938  Sonchus oleraceus Monte Lloyd; 1950-7-31 500731 953 Los Angeles Campus of University of California at Los Angeles 121 Comment
  LA212313  Sonchus oleraceus L. Haines; 1949-7-22 s.n. Los Angeles Canoga Park. Comment
  LA212314  Sonchus oleraceus Bill Bozarth; 1949-7-11 s.n. Los Angeles Conoga Park. Comment
  LA32074  Sonchus oleraceus Henry J. Thompson; Peter H. Raven 1959-6-4 14346 Los Angeles Santa Monica Mountains, Point Dume 12 Comment
  LA32075  Sonchus oleraceus Peter H. Raven; Henry J. Thompson 1959-9-18 Los Angeles Campus of University of California at Los Angeles 129 Comment
  LA32076  Sonchus oleraceus Peter H. Raven; 1959-5-9 14165 Los Angeles SANTA MONICA MOUNTAINS, Mulholland Hwy, 1 mi W of Las Virgenes Rd, Malibu Creek drainage. 259 Comment
  LA35622  Sonchus oleraceus Ronald A. Cross; May 1952 35622 Los Angeles Santa Monica Mountains, Topanga Canyon Comment
  LA39068  Sonchus oleraceus H. Lewis; 1940-8-14 Los Angeles Campus of University of California at Los Angeles Comment
  OBI15388  Sonchus oleraceus R. R. La Belle 1967-10-10 40 San Luis Obispo Laguna Lake, San Luis Obispo Comment
  OBI19174  Sonchus oleraceus Dan Sheehy 1978-10-4 3 San Luis Obispo E facing slope near tennis courts at Tropicana Village, San Luis Obispo Comment
  OBI25698  Sonchus oleraceus Hannah Rothlin 1981-2-20 6 San Luis Obispo Along the W bands of Poly Cyn rd .5 mi past the entrance Comment
  OBI35711  Sonchus oleraceus Rebecca Cicoria 1982-5-8 63 Los Angeles Palos Verdes Peninsula, Sepulveda Cyn, along Si's Trl, Rolling Hills Comment
  OBI35840  Sonchus oleraceus Allison Berry 1984-2-26 22 San Luis Obispo Camp San Luis Shooting Facility 6.5 mi N of San Luis Obispo on hwy 1. Near front entrance gate Comment
  OBI4349  Sonchus oleraceus Gregg A. Young 1972-5-6 37 Santa Barbara Pt Sal area Comment
  OBI49928  Sonchus oleraceus David J. Keil, Kathy Bay and Rich Ferguson 1984-4-28 18135 San Luis Obispo Amer Cyn are in La Panza Mts Comment
  OBI53851  Sonchus oleraceus Arthur W. Hazebrook 1993-5-23 213 San Luis Obispo Nipomo Dunes Complex, Riparian corridor along N base of Big Coreopsis Hill Comment
  OBI5453  Sonchus oleraceus Sharon Jochums 1974-4-3 66 San Luis Obispo W of hwy 1 S of Piedras Blancas Point on marine terr Comment
  OBI73494  Sonchus oleraceus David J. Keil, with Malcolm McLeod, Corky Matthews, Ron Branson, Lela and Bernard Burdette, Craig Cunningham, Clare Hardham 1995-6-27 25441 San Luis Obispo West Cuesta Ridge at east end of botanical area Comment
  OBI77825  Sonchus oleraceus Jennifer Stone 1986-3-9 5 San Luis Obispo Cuesta Ridge E in chaparral area burned over in the Las Pilitas Fire of June-July 1985. Voucher for fire successional thesis study, Soils Science Dept, Calif Poly State Univ. Site 1 Comment
  OBI80793  Sonchus oleraceus D. R. Miller 2015-6-12 615 .1129 San Luis Obispo Pine Mountain Region. This material is from Ridge Top property N of County/State communication towers. 924 Comment
  PGM5512  Sonchus oleraceus Beatrice F Howitt 1955-5-9 0032 Monterey Monterey Peninsula, Pacific Grove, Piedmont Avenue Del Monte Park Comment
  POM122397  Sonchus oleraceus Marcus E. Jones 1926-9-9 s.n. Los Angeles San Clemente Island. Comment
  POM12323  Sonchus oleraceus F. L. Robinson 1921-5-9 58 Los Angeles Claremont. 365 Comment
  POM178031  Sonchus oleraceus Joseph A. Ewan 1931-5-11 4192 Los Angeles 1 mile noth Van Nuys Estate, West 6th St. Comment
  POM181473  Sonchus oleraceus H. F. Copeland 863 Butte Nelson. Comment
  POM19130  Sonchus oleraceus P. A. Munz 1923-4-9 6680 Los Angeles San Clemente Island. Canyon 3 miles southeast of Casa Blanca. Comment
  POM202168  Sonchus oleraceus L. M. Booth 1932-7-21 1297 Orange Near Sunset Beach, Anaheim Marsh. Comment
  POM292651  Sonchus oleraceus Lyman Benson 1932-4-11 3293 Kern Bakersfield. Kern River Watershed. 122 Comment
  POM361387  Sonchus oleraceus N. C. Cooper 1942-10-1 2018 Los Angeles Hancock Bld. campus. Univ. So. Calif. Growing in bed of Pfitzer Juniper. Comment
  POM6198  Sonchus oleraceus N. R. Shaw 1900-6-11 s.n. Los Angeles Claremont. 365 Comment
  POM6199  Sonchus oleraceus Arthur M. Cleghorn 1902-6-20 s.n. Los Angeles Claremont. Comment
  RSA0021431  Sonchus oleraceus Anonymous 1951-3-20 s.n. Los Angeles Point Dume 27 Comment
  RSA0088786  Sonchus oleraceus Steven A. Junak, Keri Kirkland, Aaron Hebshi 1998-4-22 6373 Santa Barbara San Miguel Island: SE side of Prince Island, upslope from nest boxes for auchlets. 30 Comment
  RSA0093419  Sonchus oleraceus Bonnie C. Templeton 1931-7-6 1610 Alameda Berkeley. Comment
  RSA100851  Sonchus oleraceus Roxana S. Ferris 1954-4-23 12729 Marin Near Dillons Beach Post Office. Comment
  RSA116801  Sonchus oleraceus W. R. Dudley 1906-5-28 s.n. Santa Clara Court back of library, Stanford University. The Santa Cruz Mtn Peninsula. Comment
  RSA12389  Sonchus oleraceus C. B. Wolf 1934-4-11 5601 Los Angeles Bryant Ranch, east of Long Beach, 250 ft. northeast of junction of Hathaway, Los Altos and 8th Streets. 15 Comment
  RSA12404  Sonchus oleraceus C. B. Wolf 1934-4-11 5617 Los Angeles Bryant Ranch, E of Long Beach, 180 ft. east of center of sec. and 150 ft. south of line of SE1/4; T4S R12W S27 SE/4 5 Comment
  RSA127810  Sonchus oleraceus P. H. Raven, Henry J. Thompson 1959-9-18 s.n. Los Angeles Weed about plantings, campus of the University of California, West Los Angeles. 130 Comment
  RSA128377  Sonchus oleraceus P. H. Raven 1950-6-3 2209 San Mateo along Millbrae Ave., Millbrae. 61 Comment
  RSA14284  Sonchus oleraceus Daniel Cleveland 1887-4-17 s.n. San Diego [Unspecified] Comment
  RSA160432  Sonchus oleraceus J. D. Olmsted 1959-3-23 308 Los Angeles Blanchard park on Pomona college campus by area catching runoff from sprinkling system-common weed. Comment
  RSA210536  Sonchus oleraceus J. T. Howell, Gordon H. True 1967-5-31 42524 Tulare Near E line of vernal pool natural area in Valley Grassland, about 4.5 miles ENE of Pixley. 84 Comment
  RSA215968  Sonchus oleraceus J. T. Howell 1957-6-16 32668 San Francisco Third and Davidson streets. Comment
  RSA221546  Sonchus oleraceus Arthur C. Gibson 1971-4-19 1918 San Bernardino Stoddard Canyon, Angeles National Forest. 808 Comment
  RSA222979  Sonchus oleraceus Gerald L. Benny, Colin M. Wainwright 1971-5-24 492 San Bernardino Day Canyon, San Bernardino National Forest. 944 Comment
  RSA223963  Sonchus oleraceus Cherie L. Wetzel 1967-9-30 150 Alameda Along sandbag levee. Niles Canyon and vicinity Comment
  RSA226158  Sonchus oleraceus Gary D. Cromwell, David W. Wheat 1971-5-14 653 Los Angeles Mystic Canyon, Angeles National Forest, San Gabriel Mts. 2 mi. NE of Glendora. 549 Comment
  RSA232791  Sonchus oleraceus R. F. Thorne 1966-4-17 36117 Los Angeles San Clemente Island: near bottom of Box Canyon NW of Horse Canyon, SW of Thirst. 213 Comment
  RSA245275  Sonchus oleraceus Brad W. Klipfel 1973-8-17 281 Humboldt Big Lagoon Co. Park. Comment
  RSA302294  Sonchus oleraceus R. F. Thorne, C. W. Tilforth 1979-4-4 52348 Santa Barbara San Nicolas Island; grassy plateau immediately south of airport terminal and hangers, east end of island 168 Comment
  RSA306678  Sonchus oleraceus R. F. Thorne, C. W. Tilforth, Bob Given 1979-4-30 52702 Santa Barbara San Miguel Island, found on uplands of the island 152 Comment
  RSA430519  Sonchus oleraceus Lyman Benson 1929-7-12 1796 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  RSA474072  Sonchus oleraceus M. B. Dunkle 1939-4-6 7289 Los Angeles Mosquito Harbor, San Clemente Island. Comment
  RSA474082  Sonchus oleraceus F. R. Fosberg 1930-6-26 S- 3002 Los Angeles Culver Garden. 15 Comment
  RSA474083  Sonchus oleraceus F. R. Fosberg 1930-7-7 S- 3152 Los Angeles Alamitos Bay 5 Comment
  RSA474091  Sonchus oleraceus Malcolm M. Rice 1924-4-17 s.n. Santa Barbara In front of State College. Waste lands in valleys. Comment
  RSA474092  Sonchus oleraceus Malcolm M. Rice 1924-4-17 s.n. Santa Barbara Strip in front of State College. Comment
  RSA474103  Sonchus oleraceus F. R. Fosberg 1930-6-26 S- 3001 Los Angeles Culver Garden. 15 Comment
  RSA474104  Sonchus oleraceus M. B. Dunkle 1933-4-14 3296 Los Angeles Long Beach. Comment
  RSA474105  Sonchus oleraceus B. Gustafson 1981-3-18 2121 Los Angeles Ballona Wetlands, Area 3 Common weed throughout all 3 areas. Comment
  RSA474106  Sonchus oleraceus F. R. Fosberg 1930-6-23 S- 2965 Los Angeles Del Rey. 1 Comment
  RSA474116  Sonchus oleraceus R. Reynolds 1927-10-13 48 San Joaquin Stockton Comment
  RSA474119  Sonchus oleraceus M. B. Dunkle 1940-3-21 s.n. Santa Barbara Signal Hill, Santa Barbara Island Comment
  RSA474122  Sonchus oleraceus Christopher Davidson 1965-4-6 15 Santa Clara 26120 W Fremont, Los Altos Hills. 61 Comment
  RSA474123  Sonchus oleraceus Glenn A. Gorelick 1966-5-1 s.n. Yolo 418.5 2nd St, Davis. Comment
  RSA474125  Sonchus oleraceus M. B. Dunkle 1939-8-2 8421 Ventura Road Canyon, Cuyler Harbor, San Miguel Island Comment
Read comments
Aug 28 2012
  RSA474130  Sonchus oleraceus Ora M. Clark 1928-12-23 1397 Ventura South of Ventura Comment
  RSA474131  Sonchus oleraceus Josephine Meyers 1932-09 s.n. Ventura Broomis [Broome] Ranch, Coast Highway. Comment
Read comments
Apr 18 2016
  RSA482509  Sonchus oleraceus Richard Noyes, Laurel Arnseth 1988-4-30 494 Los Angeles Claremont. Foothills of the San Gabriel Mountains. Dry drainage bed 100 meters east of Thompson Creek Dam. 500 Comment
  RSA517698  Sonchus oleraceus Alan Romspert 1973-3-10 94 Inyo Panamint Mtns. Death Valley National Park. Chris Wicht Camp, Suprise Canyon, in dry arroyos Creosote Bush Scrub. South rocky slope. 762 Comment
  RSA526159  Sonchus oleraceus Steve Boyd, Timothy S. Ross, Laurel Arnseth 1990-4-6 4153 Los Angeles San Clemente Island: Lemon Tank Cyn, E side of Island. 274 Comment
  RSA527709  Sonchus oleraceus Timothy S. Ross, Annette Ross 1991-3-7 4156 Los Angeles Elephant Hill, Western Pomona,. 256 Comment
  RSA529290  Sonchus oleraceus Timothy S. Ross 1991-4-8 4463 Los Angeles Elephant Hill: Western Pomona. 229 Comment
  RSA533901  Sonchus oleraceus Timothy S. Ross, Orlando Mistretta, Mike Hammitt 1991-5-17 5151 Los Angeles San Clemente Island, at the beginning of Larkspur Canyon drainage. 1600 ft. SE of the 924'BM at the E end of old airfield landing strip. 250 Comment
  RSA534008  Sonchus oleraceus Timothy S. Ross, Orlando Mistretta, Mike Hammitt 1991-5-17 5110 Los Angeles San Clemente Island. 700 ft. ENE of North Tank and 2300 ft. due W of Jack (not Jack Point). 239 Comment
  RSA534020  Sonchus oleraceus Timothy S. Ross, Orlando Mistretta, Mike Hammitt 1991-5-19 5308 Los Angeles San Clemente Island: Westerly fork of Near-Death Canyon, draining to Mosquito Cove (drainage beginning 800 ft N of Rest [1336'] marker; 1800 ft SE of Malo Knoll [1396']). Beginning of drainage. 389 Comment
  RSA550398  Sonchus oleraceus Timothy S. Ross, Peter W. Fritsch 1990-6-20 3610 Los Angeles San Gabriel Mountains: Mouth of Burro Canyon near confluence of E and W forks of San Gabriel River. (elevation ranging from stream bottom to slopes). 445 Comment
  RSA587426  Sonchus oleraceus D. L. Banks, S. D. Boyd 1995-6-2 0570 Riverside NW Palomar Mountains; Cleveland National Forest, Agua Tibia Wilderness Area; N face of N peak of Agua Tibia Mountain; On the Woodchuck Trail N of the Riverside County boundary, in the clay grasslands in section 32, W of the Dripping Springs Alcove Area. 890 Comment
  RSA592295  Sonchus oleraceus L. C. Wheeler 1967-5-13 9544 Los Angeles San Gabriel Mountains. San Gabriel Canyon, Ward's Grove. 262 Comment
  RSA596367  Sonchus oleraceus R. G. Swinney 1989-8-24 s.n Los Angeles Big Dalton Canyon, Glendora Wilderness Park, 1.5 mi. NE of Glendora Mtn Rd. 457 Comment
  RSA600451  Sonchus oleraceus L. C. Wheeler 1968-3-6 s.n. San Bernardino San Gabriel Mountains: Meyer Canyon off Lytle Creek. 701 Comment
  RSA601024  Sonchus oleraceus L. C. Wheeler 1967-5-13 9504 Los Angeles San Gabriel Mountains; mesa between Little Dalton and Englewild canyons. 373 Comment
  RSA606030  Sonchus oleraceus L. C. Wheeler 1968-11-3 s.n. Kern Kernville: Kern River. Comment
  RSA608063  Sonchus oleraceus L. C. Wheeler 1931-3-7 s.n. Los Angeles La Verne. Comment
  RSA610666  Sonchus oleraceus M. R. Benedict 1968-3-21 s.n. Santa Barbara Santa Cruz Island. Near southern end of Christi Beach. Comment
  RSA610672  Sonchus oleraceus R. N. Philbrick 1966-1-3 B 66 -04 Santa Barbara San Miguel Island. Willow Canyon, 61 Comment
  RSA621071  Sonchus oleraceus Mary DeDecker 1977-6-16 4309 Inyo Panamint Mountains, west side.: Surprise Canyon narrows. 975 Comment
  RSA630376  Sonchus oleraceus L. C. Wheeler 1967-5-15 9597 Los Angeles San Gabriel Mountains: Elsmere Canyon; bottom of canyon near mouth. 434 Comment
  RSA637642  Sonchus oleraceus R. F. Thorne, Gerald L. Benny, John Dourley 1971-7-23 41011 San Bernardino San Bernardino National Forest: Day Creek Canyon. 915 Comment
  RSA6387  Sonchus oleraceus Patterson, Wiltz 1907-6-6 s.n. Monterey Near Pacific Grove. Comment
  RSA644401  Sonchus oleraceus E. R. Blakley 1962-3-31 4907 Ventura Anacapa Island: Flat area near top and center of Middle Island. 91 Comment
  RSA644402  Sonchus oleraceus E. R. Blakley 1961-5-18 4386 Ventura Anacapa Island. Large canyon north side of highest peak on West Island. 91 Comment
  RSA649384  Sonchus oleraceus Dick Mosbarger 1948-2-22 s.n. Ventura In garden, Mosbarger Ranch, 1 m. W. Fillmore. 121 Comment
  RSA651184  Sonchus oleraceus Peter Tolstoy 1948-2-1 s.n. San Bernardino Alta Loma, w. side Hellman Avenue on McLennan Ranch. Comment
  RSA651186  Sonchus oleraceus Don Black 1948-4-20 s.n. Ventura Found in Montalvo, 100 yards SE of Ventrua [Ventura] Pacific Fruit Growers Association Packing House. 23 Comment
  RSA652834  Sonchus oleraceus Julie Greene 1991-5-10 232 San Bernardino Town of Sleepy Hollow, southern most end of Grandview Drive. Along dirt trail south to top of ridge between Carbon and Soquel Canyons. 396 Comment
  RSA658354  Sonchus oleraceus Naomi Zohman 1985-4-28 36 Los Angeles Junction of CA Hwy 39 and west fork of San Gabriel River. Forest Service Road, along the west fork. Comment
  RSA658716  Sonchus oleraceus Margaret Murphy 1983-5-15 0026 -C Riverside located in the north section of parsel 475-090-006, lot 20 Moreno Acres of the unincorporated area known as Sunnymead. Comment
  RSA659746  Sonchus oleraceus Orlando Mistretta, E. Kellogg, Laurel Arnseth, Peter L. Morrell 1992-4-3 66 Los Angeles San Clemente Island. Comment
  RSA660568  Sonchus oleraceus Lydia Paneri 1982-4-17 1 Riverside Cajalco Road, 0.7 miles east of I-15; south of Corona. Comment
  RSA661092  Sonchus oleraceus Orlando Mistretta 1992-4-5 204 Los Angeles Guds, San Clemente Island. Comment
  RSA677999  Sonchus oleraceus Sarah J. De Groot 2002-5-19 696 San Diego 10678 Cerveza Dr., Hidden Meadows 92026. Comment
  RSA680136  Sonchus oleraceus Sarah J. De Groot 2003-2-16 1007 San Diego Hidden Meadows: Cerveza Dr. Comment
  RSA688866  Sonchus oleraceus Fred M. Roberts 2003-5-1 5669 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy, Cristianitos Cyn., 0.49km S Gato Gate and just west of Cristianitos Rd. (San Clemente) 84 Comment
  RSA696190  Sonchus oleraceus Keith E. Hoffmaster 1928-3-9 s.n. Orange Santa Ana Comment
  RSA697068  Sonchus oleraceus Kenneth Beard 1934-02 s.n. Orange Walnut grove on Freeman Street, Santa Ana. Comment
  RSA709713  Sonchus oleraceus Scott Boczkiewicz, Mark Elvin 2005-2-5 1001 San Diego Peninsular Ranges, San Ysidro Mountains: W side of Otay Mtn; 1.5 km SSE of Savage Dam (Otay Lake); N of County Prison; near tributary to Otay River, N of O'Neal Canyon. 183 Comment
  RSA721115  Sonchus oleraceus Anonymous s.n. Orange Santa Ana Comment
  RSA721116  Sonchus oleraceus Anonymous s.n. Orange Neglected city lot Comment
  RSA721117  Sonchus oleraceus Anonymous s.n. Orange High School Campus. Comment
  RSA756774  Sonchus oleraceus Michael Honer, Lincoln Hulse 2005-3-14 2072 San Bernardino Whipple Mountains; steep hills appx. 1 air mi. NE of Bandit Pass. 366 Comment
  RSA760658  Sonchus oleraceus William J. Ferlatte, L. Maynard Moe 1970-4-27 1222 Contra Costa San Francisco Bay, Red Rock Island. Comment
  RSA948  Sonchus oleraceus J. T. Howell 1928-2-7 825 Orange Near the ranch houses, Rancho Santa Ana 152 Comment
  SBBG109843  Sonchus oleraceus C. B. Hardham 1957-11-2 2702 San Luis Obispo Old Crk, Cayucos Comment
  SBBG131994  Sonchus oleraceus S. A. Junak, R. Philbrick 1990-11-8 SCI 122 Los Angeles along N side of field station building Comment
  SD38305  Sonchus oleraceus Edith A. Purer 1932-3-24 Los Angeles El Segundo sand dunes. Comment
Read comments
Jul 10 2010
  SD38308  Sonchus oleraceus Edith A. Purer 1932-7-18 San Mateo Half Moon Bay; Comment
  SDSU541  Sonchus oleraceus R. M. Beauchamp 1967-3-18 271 Los Angeles San Clemente Island. Comment
  SEINET10475006  Sonchus oleraceus Mary Susan Taylor 1975-6-11 Taylor 732 Monterey Corner of Contra Costa Street and Palm Street, Seaside; with Lavatera assurgen tiflora, Malva, Brassica, Pteridium. 6 Comment
  SEINET10615377  Sonchus oleraceus David B. Dunn 1947-7-20 Dunn 2986 Los Angeles Collected at 316 North Avenue 50, Los Angeles, CA. Comment
  SEINET10615380  Sonchus oleraceus David B. Dunn, A. Folsom 1948-6-17 Dunn 3795 Riverside At quad 1. At camp in Pushawalla canyon under palms. Indio Hills, Colorado Desert. Comment
  SEINET10925142  Sonchus oleraceus David B. Dunn 1941-4-12 Dunn 1142 San Diego Desert floor. 10-15 miles east of Benson's filling station near Borrego, by a hole near the road with water in it. Near Anza-Borrego Desert State Park. Comment
  SEINET11800377  Sonchus oleraceus Unknown 1932-1 9027 Santa Clara Stanford Campus Comment
  SEINET4016317  Sonchus oleraceus M. B. Dunkle 1939-1 8306 Ventura Coral Harbor, San Nicolas Island. Comment
  SEINET4016318  Sonchus oleraceus M. B. Dunkle 1939-1 8421 Santa Barbara Road Canyon, Cuyler Harbor, San Miguel Island. Comment
  SFV11229  Sonchus oleraceus D. K. Shayne 1966-3-9 104 Los Angeles Santa Susana Mountains Above Zelzah Street. Comment
  SFV16833  Sonchus oleraceus K. Tajbakhsh 1996-4-13 25 Los Angeles California Channel Islands Catalina Island. Fisherman's Bay. Outside of USC Marine Research Station gates. Comment
  SFV18419  Sonchus oleraceus C. Ferguson 1974-5-13 s. n. Los Angeles San Gabriel Mountains Placerita Canyon Natural Area. Botany trail. Comment
  SFV4117  Sonchus oleraceus P. M. Kennamer 1959-5-30 s. n. Los Angeles San Fernando Valley Northridge. 17627 Nordhoff St. 274 Comment
  SFV4119  Sonchus oleraceus M. Wisotsky 1958-5-25 s. n. Los Angeles San Fernando Valley Pacoima. To the rear of 12904 Osborne Avenue, directly behind house. Comment
  UC1969543  Sonchus oleraceus Eric Luning 2003-5-11 26 Kern Kern Canyon, Sequoia National Forest, Lower Richbar Picnic Ground. Comment
  UC2028518  Sonchus oleraceus Barbara Ertter 1996-11-24 15428 Contra Costa West side of Mount Diablo, Pine Pond along Stage Road in Pine Canyon. Comment
  UC284186  Sonchus oleraceus P. A. Munz 1923-4-9 6680 Los Angeles 2 mi s Casa Blanca (San Clemente Island); San Clemente Island Comment
  UC36526  Sonchus oleraceus T. H. Gilbert June 1899 Siskiyou Scott River Valley Comment
  UCD134042  Sonchus oleraceus Frederica Bowcutt 1984-6-23 435 Sonoma Salt Point State Park. Approx. 20 miles N of Jenner and 80 miles S of Fort Bragg. North of Gerstle Cove approx. 1/4 mile. W of Highway 1. 15 Comment
  UCD134044  Sonchus oleraceus Frederica Bowcutt 1987-5-28 1032 Mendocino Sinkyone Wilderness State Park; along the North Fork of Jackass Creek; just north of old town of Wheeler. SE of Bear Harbor 2 air miles. 15 Comment
  UCD134046  Sonchus oleraceus Frederica Bowcutt 1987-5-28 1037 Mendocino Sinkyone Wilderness State Park; along the North Fork of Jackass Creek; just north of old town of Wheeler. SE of Bear Harbor 2 air miles. 15 Comment
  UCD136151  Sonchus oleraceus L. Angst Date Unknown 9 Unknown County unknown: exact location unknown. Comment
  UCD136159  Sonchus oleraceus Donald R. Bissing 1973-6-2 148 Los Angeles Evey Canyon, San Gabriel Mountains. 1.4 miles from canyon mouth. 1024 Comment
  UCD136160  Sonchus oleraceus Gary D. Cromwell; David W. Wheat 1971-5-14 653 Los Angeles west-facing slope above middle part of canyon. Mystic Canyon, Angeles National Forest, San Gabriel Mountains. 2 miles northeast of Glendora. 548 Comment
  UCD136162  Sonchus oleraceus Jack Delaini; Larry DeBuhr 1974-2-21 35 Los Angeles Lodi Canyon, San Dimas Experimental Forest, Angeles National Forest. 487 Comment
  UCD136164  Sonchus oleraceus H. R. Drever 1945-6-1 s.n. Yolo Davis. Comment
  UCD136181  Sonchus oleraceus Morris Halperin 1929-5-1 s.n. Alameda streets of Berkeley. Comment
  UCD136182  Sonchus oleraceus Mary M. Hektner; Cathy Hendel, Sue Dakuzaku 1974-7-2 103 Sonoma Near State Highway 1, Sea Ranch, Unit 28 Owner's Map. Comment
  UCD136184  Sonchus oleraceus Mary M. Hektner 1974-7-25 167 Sonoma Galleon's Reach, Unit 3 Owner's Map, Sea Ranch, near State Highway 1. Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  UCD136191  Sonchus oleraceus June McCaskill 1973-4-9 770 Yolo behind Robbins Hall, University of California campus, Davis. Comment
  UCD136193  Sonchus oleraceus Gerry North 1993-4 5 Sonoma Sugarloaf Ridge State Park. About 50 air miles N of San Francisco, 10 air miles E of Santa Rosa, 2.5 air miles NE of Kenwood, and 18 air miles NW of Napa. Across road from Goodspeed trailhead pullout. 228 Comment
  UCD136194  Sonchus oleraceus Bob Rodin 1943-4-16 116 Alameda UC Berkeley. Strawberry Canyon. Southern slope. West of the Botanical Garden. Comment
  UCD136197  Sonchus oleraceus James P. Smith; Advanced Plant Taxonomy Class 1973 1973-5-26 6862 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UCD136201  Sonchus oleraceus Robert F. Thorne 1966-9-14 36667 Los Angeles Santa Catalina Island, Little Harbor. 4 Comment
  UCD136207  Sonchus oleraceus Alice Warrick 1979-5-19 29 Yolo Davis. 870 Linden lane. Growing as a weed in cultivated garden. 13 Comment
  UCD136208  Sonchus oleraceus Kenneth A. Wilson 1961-2-21 875 Los Angeles Northridge. San Fernando Valley State College campus. Comment
  UCD136209  Sonchus oleraceus Ira L. Wiggins 1965-11-6 20334 Orange west side of Atwood. Comment
  UCD136210  Sonchus oleraceus Ira L. Wiggins 1966-3-5 20514 Orange 1/2 mile W of El Toro P.O. along Highway S-18. Comment
  UCD136211  Sonchus oleraceus Barbara Yungert 1974-5-6 118 Yuba south of station headquarters, Sierra Foothill Field Station. Comment
  UCD136212  Sonchus oleraceus W. R. Dudley 1906-5-28 s.n. Santa Clara Stanford University. Court back of library. Comment
  UCD82877  Sonchus oleraceus Richard Smith 2009-7-20 s. n. Monterey S of the town of Salinas at the end of Somavia Rd. near the Salinas River. Comment
  UCSB17194  Sonchus oleraceus Hurst, Linda 1963-4-28 Santa Barbara Vacant lot south of Campbell Hall, University of California, Santa Barbara 13 Comment
  UCSB17217  Sonchus oleraceus Schulte, John 1963-4-26 San Mateo Jasper Ridge, 3 miles southwest of Stanford Campus, between Santa Clara Valley and main front of Santa Cruz Mountains 152 Comment
  UCSB17218  Sonchus oleraceus Brooks, Terry 1963-4-8 Marin 1 mile north of Golden Gate Bridge on Fort Baker 30 Comment
  UCSB18413  Sonchus oleraceus Hutchinson, Sandra 1964-3-24 San Mateo Crystal Springs Lake, Sawyer Camp Road, about 2.7 miles off Skyline Blvd., entrance off Millbrae Ave. 106 Comment
  UCSB22554  Sonchus oleraceus Strong, Carol 1967-11-26 Santa Barbara Near slough, on west side of south end of Sandspit Road, Goleta Comment
  UCSB26179  Sonchus oleraceus V. A. Sager 1961-7-21 195 Unknown collected 1.0 mi E, and 20.0 mi WSW, along State Highway 13A Twin Harbors State Park entrance, and Aberdeen - Twin Harbors State Park, Aberdeen, and Satate Highway 13A 7 Comment
Read comments
Jan 22 2015
  UCSB33237  Sonchus oleraceus Partsch, M. 1977-5-14 Los Angeles Along Boquet Canyon Road 14 mi. south of its junction with Elizabeth Lake Road 762 Comment
  UCSB36765  Sonchus oleraceus Thomson, Jean 1981-5-31 Santa Barbara Coastal mesa ca. 33 km. west of Isla Vista and 1 km. south of Ellwood Station, Goleta 18 Comment
  UCSB38539  Sonchus oleraceus Baley, David; Lampl, Diane 1981-9-5 Santa Barbara Southeast area of Cachuma Lake, where dirt road forks, 1/4 mile West of the end of the paved old highway and 1/4 mile North of Highway 154 228 Comment
  UCSB43199  Sonchus oleraceus Fletcher, Martin 1981-5-19 Santa Barbara 100 yds. N. of Rancho Real on the West rim of Agua Caliente 36 Comment
  UCSB43205  Sonchus oleraceus Fletcher, Martin 1979-12-7 Santa Barbara 0.1 mile north of Rancho Real up Canada de Sacate 30 Comment
  UCSB44122  Sonchus oleraceus Ferguson, Dave 1980-3-14 Santa Barbara On east bank of Maria Ygnacio Creek, 0.3 miles south of its junction with Cathedral Oaks Road, Goleta 15 Comment
  UCSB48138  Sonchus oleraceus Hobbs, E. 1978-5-20 Santa Barbara Eastern pine forest; Santa Cruz Island Comment
  UCSB49105  Sonchus oleraceus Aste, Kathleen 1979-2-25 Santa Barbara On east side of Camino Corto Rd., between Sueno Rd. and Pasado Rd., Isla Vista Comment
  UCSB55367  Sonchus oleraceus Fletcher, Martin 1981-4-9 Santa Barbara 2.9 miles north of the coast on the east rim of Alegria Canyon 262 Comment
  UCSB55368  Sonchus oleraceus Fletcher, Martin 1981-5-7 Santa Barbara 2.2 miles north of the coast on the east branch of Alegria Canyon 70 Comment
  UCSB55373  Sonchus oleraceus Fletcher, Martin 1981-5-7 Santa Barbara 2.2 miles north of the coast on the east branch of Alegria Canyon 70 Comment
  UCSB56040  Sonchus oleraceus Pitts, S. 1984-4-7 Santa Barbara On private road off Camino Cielo, 0.4 mi. from Calif. 154 turnoff, Santa Ynez Mts. 457 Comment
  UCSB56612  Sonchus oleraceus Moles, R. 1988-5-15 Santa Barbara Corner of Hollister Ave. and Los Carneros Rd., Goleta 15 Comment
  UCSB59385  Sonchus oleraceus Fletcher, Martin 1980-5-31 Santa Barbara In a slide area along Arroyo Bulito 0.4 miles north of the waterfalls 121 Comment
  UCSB65226  Sonchus oleraceus Magney, David; Wellonen, Cher 2001-4-4 Santa Barbara Outer South Coast Ranges; Orcutt Quad., T9N, R35W, Punta De La Laguna, San Bernardino BM; between Solomon and Black Roads (~280-ac site); N of SR1, S of Santa Maria Airport, W of Orcutt, Plot #11 ~5,205 feet NW of Solomon Rd. bridge 49 Comment
  UCSC007783  Sonchus oleraceus Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  UCD74490  Sonchus oleraceus var. asper J. E. Sandoval 1995-10-30 97 Merced Great Valley Grasslands State Park (encompasses the former Fremont Ford State Recreation Area). South of the town of Stevinson, 1 mi. south of Hwy 140 on Hwy 165. 17 Comment
  CAS-BOT-BC374757  Sonchus tenerrimus Steven A. Junak 1993-5-19 SN- 1117 Ventura California Islands. San Nicolas Island: SW escarpment, on ridge along E side of Grand Canyon 33 Comment
  CHSC116495  Sonchus tenerrimus Lowell Ahart 2015-11-21 20691 Butte On the north side of home, Peter Ahart Ranch, about 1 1/2 miles north and one mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC31658  Sonchus tenerrimus L. Ahart 1974-6-3 474 Butte In garden. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66157  Sonchus tenerrimus Vernon H. Oswald; Lowell Ahart 1996-5-27 7670 Butte Sacramento 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. 32 Comment
  SBBG106146  Sonchus tenerrimus S. A. Junak 1993-5-19 SN 1117 Ventura SW escarpment, on ridge along E side of Grand Cyn 33 Comment
  SBBG106303  Sonchus tenerrimus S. A. Junak 1989-4-24 SN 365 Ventura ridgetop NE of barge landing at Daytona Beach 121 Comment
  SBBG30299  Sonchus tenerrimus R. N. Philbrick with J. K. McPherson 1968-4-28 B 68 -249 Santa Barbara E of Signal Pk 83 Comment
  SBBG30300  Sonchus tenerrimus R. N. Philbrick with J. K. McPherson 1968-4-28 B 68 -247 Santa Barbara E of upper Cave Cyn 73 Comment
  SBBG30303  Sonchus tenerrimus R. N. Philbrick 1968-3-19 B 68 -82 Santa Barbara E of Signal Pk, between Cat Cyn and Graveyard Cyn 79 Comment
  SBBG32816  Sonchus tenerrimus R. N. Philbrick with D. W. Ricker 1969-3-15 B 69 -45 Santa Barbara lower terrace, just S of Middle Cyn Comment
  SBBG33204  Sonchus tenerrimus R. N. Philbrick 1969-4-30 B 69 -111 Santa Barbara near mouth of Cave Cyn 45 Comment
  SD113009 Image available Sonchus tenerrimus Darley F. Howe 1977-5-6 4937 San Diego Near corner of Melrose Drive and Melrose Way, Vista. Comment
  SD138162  Sonchus tenerrimus John W. Brown 1994-1-22 MM 85 San Diego McGinty Mountain, northeast edge, along trail Comment
  SD158778  Sonchus tenerrimus Joe Barth 2004-8-24 102 San Diego Chula Vista Wildlife Reserve: in southeast SanDiego Bay; access via electrical power plant. (CVWR was constructed as mitigation for the adjacent J St. marina construction). 0 Comment
  SD205517  Sonchus tenerrimus Jonathan K. Snapp-Cook, K. Williams, J. Shoemaker 2008-5-24 140 San Diego Otay Mountain NW side, Bureau of Land Management, canyon just W of Little Cedar Canyon that begins at eastern end of Lower Otay Lake. Entered canyon by heading 2.5 miles SE on the dirt road starting at the yellow gate off Otay Lakes Road. 451 Comment
  SD253037  Sonchus tenerrimus Richard L. Breisch 2014-5-18 1104 San Diego City of San Diego; San Clemente Park south side route 52, just SW of junction I-805 and Highway 52; near Kroc Trail & by the creek. 73 Comment
  UC134387  Sonchus tenerrimus C. A. Purpus 1898-5 San Diego Point Loma Comment
  UC36534  Sonchus tenerrimus C. R. Orcutt 1884-3-24 San Diego Pt. Loma Comment
  UCD146721  Sonchus tenerrimus G. F. Hrusa; D. Crowe 1998-5-8 14376 Contra Costa Sacramento-San Joaquin River Delta. On Dow Chemical property at Pittsburg. Adjacent to shore of San Joaquin River. 2 Comment
  UCR198409  Sonchus tenerrimus George K. Helmkamp, E. A. Helmkamp 2008-4-17 13280 Sutter Sacramento Valley, along Pass Road at the south side of Sutter Buttes, 2.3 miles northwest of Sutter 70 Comment
  CAS-BOT-BC374754  Sonchus tenerrimus Lowell Ahart 1984-11-1 4832 Butte On the Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC374755  Sonchus tenerrimus David D. Keck 1931-10-11 1306 Santa Clara Embarcadero, Palo Alto Comment
  CAS-BOT-BC374756  Sonchus tenerrimus Jack Rockwell 1969-4-23 69 -0513 Tulare First turnout west of Hospital Rock on Generals Highway Comment
  SEINET10474014  Sonchus tenerrimus Lowell Ahart 1984-11-1 Ahart 4832 Butte On damp red soil in garden on Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. 50 m elev. 50 Comment
  SEINET10474015  Sonchus tenerrimus Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5150 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET11800490  Sonchus tenerrimus O. R. Orcutt 1884-1 s.n. Unknown Pt. Loma, San Diego Comment
  GH241864  Sonchus tenuifolius T. Nuttall Unknown San Diego, U. Calif., St. Diego Comment



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