Search Results — 1107 specimen records retrieved (806 records with coordinates)
Results for search: Scientific name=Sonchus asper;   More information: Jepson Online Interchange
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
 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
  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-BC374408  Sonchus asper E. A. McGregor 1917-6-10 999 San Diego Colorado Desert. Jacumba 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-BC374414  Sonchus asper W. R. Dudley; F. H. Lamb 1896-6-29 4746 Ventura Mt. Pinos Region. Goodenough Meadow 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-BC374443  Sonchus asper Ernest C. Twisselmann 1965-4-26 10613 Kern Sierra Nevada, Greenhorn Range. Adobe Knoll at the head of Adobe Canyon 502 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-BC374464  Sonchus asper Chester Dudley 1926-8-1 s.n. Monterey Pacific Grove Comment
  CAS-BOT-BC374477  Sonchus asper Ernest C. Twisselmann 1952-5-16 522 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Chris Twisselmann Ranch, eastern San Luis Obispo County 670 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-BC374494  Sonchus asper Fred Hemphill 1973-5-14 821 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-BC374517  Sonchus asper J. H. Thomas 1953-5-30 3246 Santa Cruz Along Pajaro River near bridge on San Juan Bautista - Watsonville highway (#67) 91 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-BC374519  Sonchus asper Paul F. Covel 1936-4-22 255 Santa Cruz Scotts Valley, n S. Cruz 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
  CDA20650  Sonchus asper G. F. Hrusa, Wm. R. Dougherty 2006-6-1 16871 Santa Barbara San Rafael Mountains; Manzana Ck. Canyon, San Rafael Wilderness, Los Padres National Forest, +/- 3 mi. downstream of Nira trailhead (Sunset Valley Rd.). 548 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
  CDA29737  Sonchus asper D. G. Kelch 2009-4-2 9 .204 Solano Carquinez Strait; Vallejo. In large undeveloped, but highly disturbed (disked many times) site E of Admiral Callahan Way between Turner Parkway and Rotary Way. Comment
  CDA34305  Sonchus asper M. O'Brien 2011-6-14 MOB 11 -7 Los Angeles Santa Monica Mountains; Tapia County Park. 152 Comment
  CDA35400  Sonchus asper G. F. Hrusa, M. Beyers 2011-6-8 18316 Santa Barbara Sierra Madre Mountains; San Rafael Wilderness. Sisquoc River canyon at Sycamore Camp. 614 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
  CHSC10128  Sonchus asper J. W. Johnson 1961-6-12 1410 Humboldt Samoa Peninsula. On a dune tongue between the foredunes, at Foredune 39. 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
  CHSC31290  Sonchus asper Mark Stopher 1980-6-4 96 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  CHSC31660  Sonchus asper L. Ahart 1977-5-8 1352 Butte On the bottom of a wash. Peter Ahart Ranch, Honcut. 50 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
  CHSC36871  Sonchus asper M. S. Taylor 1982-9-13 5136 A Plumas Ramelli Ranch along Feather River near Calpine bridge, ca. 1 mi w of Beckwourth. 1487 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
  HREC962 Image available Sonchus asper H. F. Heady 1954-6-3 985 Mendocino Vassar Pasture - Hopland Field Station Comment
  HREC963 Image available Sonchus asper H. F. Heady 1952-10-16 510 Mendocino Orchard 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
  JEPS111647  Sonchus asper A. G. Murdock 2003-9-12 177 Solano Mare Island 2 Comment
  JEPS121251  Sonchus asper Lowell Ahart 2013-7-22 18846 Lassen W margin of duck field, about 50 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS15054  Sonchus asper L. R. A. 1901-3-16 1144 San Mateo Menlo Park Comment
  JEPS26443  Sonchus asper Peter H. Raven and Henry J. Thompson 1960-5-29 15430 Los Angeles Mulholland Highway near Decker Road (Santa Monica Mountains); Santa Monica Mountains 457 Comment
  JEPS36087  Sonchus asper Ernest C. Twisselmann 1964-7-17 9749 Kern se end Castaic Lake; Tehachapi Mountains, se end Castaic Lake 1059 Comment
  JEPS36100  Sonchus asper Ernest C. Twisselmann 1964-5-26 9534 Kern Caliente Canyon Tehachapi-Kernville Region, Caliente Canyon 822 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
  OBI30702  Sonchus asper Julie M. Vanderwier 1980-11-10 s.n. San Luis Obispo Indian Knob Tar Sands Comment
  OBI31615  Sonchus asper Turnquist, Smeltzer 1982-5-1 68 San Luis Obispo NE side of Laguna Lake park 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
  PASA336  Sonchus asper Sally Ellis 1940-4-22 Los Angeles Puddingstone 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
  POM294134  Sonchus asper Lyman Benson 1948-7-1 12875 Lake Bed of Kelsey Creek 1 mile north of Kelseyville. Middle N Coast mtn range, Clear Lake drainage. 412 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
  POM6200  Sonchus asper Robinson, Crocker 1916-3-28 s.n. Riverside Santa Ana Mountains: Comment
  RSA0010586  Sonchus asper LeRoy Gross, Joy England, Naomi S. Fraga 2015-5-6 7339 Ventura USC/Best Property; Off Pyle Road, south of Highway 126. Almost halfway between Santa Paula and Fillmore. 99 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
  RSA0041810  Sonchus asper Duncan S. Bell, Evan Meyer, Perriene Veguer 2014-5-29 s.n. San Bernardino Bighorn Mountains; San Bernardino National Forest; in the Bighorn Mountains Wilderness area; collecting in Arrastre Creek, at the south end of Horsethief Flat. 1487 Comment
  RSA0053669  Sonchus asper Duncan S. Bell, Eric Garcia, Glen Morrison, Rico Ramirez, Katie Roland 2014-7-10 7398 San Bernardino Bighorn Mountains; collecting in Rattlesnake Canyon on the east side of Mineral Mountain. 1733 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
  RSA0081057  Sonchus asper R. G. Swinney 2010-5-12 12722 Los Angeles 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
  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
  RSA0091842  Sonchus asper Bonnie C. Templeton 1967-7-13 10000 San Bernardino Lytle Creek. Near the water intake upstream from Lytle Creek Ranger Station. 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
  RSA188377  Sonchus asper R. F. Thorne, Percy C. Everett 1965-6-23 35011 Los Angeles Santa Catalina Island, lower part of Hamilton Canyon along stream bed. 61 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
  RSA250096  Sonchus asper R. F. Thorne, C. W. Tilforth 1973-5-30 43670 San Bernardino Eastern Mojave Desert, New York Mountains: upper portion of Caruthers Canyon. 1677 Comment
Read comments
Apr 24 2011
  RSA286951  Sonchus asper R. F. Thorne, Gary D. Wallace, Mark Hoefs 1977-4-30 48745 -a Santa Barbara Santa Rosa Island: Canada Lobos 23 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
  RSA463583  Sonchus asper James D. Morefield 1984-5-20 1892 Inyo White Mountains: 0.1 mile N of Antelope Springs. 1723 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
  RSA474085  Sonchus asper P. H. Raven 1965-5-15 20201 Napa 4 miles S of junction of State Hwy 128 on State Hwy 121, near Capell Valley. Comment
  RSA474086  Sonchus asper Ralph Hoffman 1930-6-15 s.n. Santa Barbara Valdez, Santa Cruz island 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
  RSA474090  Sonchus asper M. B. Dunkle 1939-8-10 s.n. Santa Barbara Santa Rosa Island. Ranch Canyon 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
  RSA516761  Sonchus asper Ed LaRue 1989-4-26 s.n. Riverside 2 mi. (airline) NW of Lake Elsinore, adjacent to Cleveland National Forest; at mouths of Rice and McVicker Canyons. 488 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
  RSA599517  Sonchus asper Steve Boyd, Lauren Raz, Timothy S. Ross 1997-4-1 9470 Los Angeles Liebre Mountains region: Upper watershed of Osito Canyon between Interstate 5 and the Old Ridge Route, vicinity of Osito Flat, a distinctive, open grassy break in slope under the high tension power lines. 793 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
  RSA680970  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.: Otay Mountain, ridge ca. 2-3 miles east of the peak, around end of jeep trail. 945 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
  RSA713055  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 Clevender Canyon 201 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
  RSA751680  Sonchus asper Orlando Mistretta 2009-6-18 3884 San Bernardino Santa Ana river Canyon, E of Camp Radford, along Forest Road 2N04 about .075 miles E of Jct. with Forest Road 2N06. 1722 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
  RSA753744  Sonchus asper Naomi Fraga, Ryan Parker 2009-6-9 2903 San Bernardino FS Road 1N04 near intersection with Santa Ana River Road, just east of Rattlesnake Canyon. 1829 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
  RSA770878  Sonchus asper Orlando Mistretta, Duncan S. Bell, Jill Beckman, J. D. England, Katie Kane, Jamie Hall, Chris McDonald, Lucila Reccia 2010-4-12 4601 Riverside San Bernardino Mountains region: Whitewater Cyn. Along Whitewater River drainage and adjacent slopes below Whitewater Visitor Center (Whitewater Trout Farm). 609 Comment
  RSA771313  Sonchus asper R. F. Thorne, Percy C. Everett 1965-5-12 34632 Los Angeles Santa Catalina Island, upper end of Middle Canyon. 305 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
  RSA780211  Sonchus asper Naomi Fraga, Joshua Paolini, Lucila Reccia 2010-8-19 3736 San Bernardino Along Santa Ana River Road near the entrance to Camp Crazzy Wasewagan 1768 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
  RSA784733  Sonchus asper Duncan S. Bell 2012-3-18 3200 Riverside The Mecca Hills; southeastern section of hills; at mouth of Hidden Canyon where drainage is blocked by the Coachella Canal, approximately 2.8 air miles southwest of Hidden Spring. 20 Comment
  RSA787379  Sonchus asper Naomi Fraga, Joshua Paolini, Jennifer Pilapil 2010-8-11 3713 San Bernardino Along the Santa Ana River along Santa Ana River Road; Rocky road bench near rivier 1700 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
  RSA799329  Sonchus asper Duncan S. Bell, Joella Adkins 2012-7-25 3903 San Bernardino San Bernardino National Forest: north side of Big Bear Lake, in the vicinity of Meadows Edge, approximately 0.25 air mile southwest of the Big Bear Discovery Center. 2075 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
  SBBG103960  Sonchus asper D. Swinney 1992-10-17 1938 San Bernardino Cajon Wash, 0.25 mi S of Swarthout Cyn Rd and jct of Cajon Wash 816 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
  SBBG117646  Sonchus asper M. Simpson, D. Estrella, R. Lauri 2003-4-11 2360 San Diego Fuel Farm region, slope downhill from asphalt rd, ca. 100 ft SE of Warehouse 114; Pt Loma Naval Facility 43 Comment
  SBBG122728  Sonchus asper K. Merk 2008-6-4 Santa Barbara central eastern portion of More Mesa 31 Comment
  SBBG124485  Sonchus asper R. Burgess, P. Munro 1999-2-26 3159 Ventura Sulphur Mtn, lower end of Sulphur Mtn Rd 243 Comment
  SBBG128153  Sonchus asper S. Hill, C. Walden, J. Sankey 2010-5-2 AH 103 Santa Barbara upper Outlaw Trail 6 m down from crk crossing; Arroyo Hondo Preserve 51 Comment
  SBBG129152  Sonchus asper A. Sawdo 1988-5-10 Santa Barbara Arlington Cyn Comment
  SBBG129176  Sonchus asper A. Sawdo, E. Edinger 1988-5-9 Santa Barbara Soledad Cyn, just below crossing of Smith Hwy, Plot 98 Comment
  SBBG129177  Sonchus asper A. Sawdo, E. Edinger 1988-5-8 Santa Barbara W slope of Tecolote Cyn, near Plot 94 Comment
  SBBG129771  Sonchus asper S. A. Junak, K. Kirkland, I. Williams 1999-4-15 6505 Santa Barbara upper reaches of a fork of Willow Cyn, off E end of airfield (first gully E of airfield) 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
  SBBG31141  Sonchus asper R. F. Thorne 1966-4-29 36273 Los Angeles near temporary pool above ranch in Middle Ranch Cyn 228 Comment
  SBBG31292  Sonchus asper R. F. Thorne with P. C. Everett 1965-6-23 35010 Los Angeles lower part of Hamilton Cyn 60 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
  SBBG35817  Sonchus asper H. M. Pollard 1967-5-25 Ventura W of Ventura River estuary 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
  SBBG42260  Sonchus asper M. B. Dunkle 1939-4-2 7209 Los Angeles SE point of San Clemente Island 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
  SBBG53404  Sonchus asper S. A. Junak with M. C. Hochberg 1979-3-27 EA 10 Ventura cement walk in front of ranger residence Comment
  SBBG67923  Sonchus asper R. Hoffmann 1930-4-18 Santa Barbara Point Sal 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
  SD156686  Sonchus asper Unknown Aug 1949 San Diego La Posta 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
  SD20415  Sonchus asper A. J. Stover 1938-3-7 San Diego Theosophical Grounds, Point Loma 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
  SD27662  Sonchus asper Frank F. Gander 1940-5-23 8761 San Diego near Eagles Nest, Hot Springs Mt. 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
  SEINET10389881  Sonchus asper A. C. Sanders, Jim Malusa 2016-3-7 42120 Imperial Chocolate Mountains Aerial Gunnery Range, c. 3.5 km NE (66 deg. ) of Salvation Pass well site 398 Comment
  SEINET10474012  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 421 Butte Chico. 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
  UC1192244  Sonchus asper Malcolm A. Nobs, S. Galen Smith 1948-7-8 45 Merced 1.5 mi n Los Banos (Los Banos Wildlife Refuge); Los Banos Wildlife Refuge 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
  UC36512  Sonchus asper W. H. Brewer 1861-5-12 598 Monterey Camp 31 , Camp 31 (Guadalupe Ranch) Comment
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Jun 16 2011
  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
  UC463166  Sonchus asper W. R. Dudley and F. H. Lamb 1896-6-29 4746 Ventura Goodenough Meadow , Goodenough Meadow (Mt. Pinos Region) Comment
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Feb 4 2015
  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
  UC57892  Sonchus asper A. A. Heller 1903-5-22 6767 Monterey Pacific Grove 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
  UC582437  Sonchus asper Joseph P. Tracy 1936-8-24 15177 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 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
  UCD41328  Sonchus asper Tera Pitman; E. Dean, M. Bibbo, and A. Douglas 2004-5-1 3 Napa Southern end of McLaughlin UC Reserve, NE side of Knoxville-Berryessa Rd, near steam and culvert that goes under road, 0.5 road miles from gate to old town of Knoxville. E side of Knoxville creek. 365 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
  UCD54328  Sonchus asper Tera Pitman; E. Dean, M. Bibbo, and A. Douglas 2004-5-1 3 Napa Southern end of McLaughlin UC Reserve, NE side of Knoxville-Berryessa Rd, near steam and culvert that goes under road, 0.5 road miles from gate to old town of Knoxville. E side of Knoxville creek. 365 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
  UCD82104  Sonchus asper Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth 2009-5-20 5631 Lake Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road. 821 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
  UCR125950  Sonchus asper A. C. Sanders, Mark Elvin 2002-6-19 25168 Los Angeles NE end of Santa Susana Mtns., 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 305 Comment
  UCR127269  Sonchus asper A. C. Sanders, Mark A. Elvin 2003-5-15 26728 Ventura Santa Susana Mtns., 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 640 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
  UCR136815  Sonchus asper A. C. Sanders, Petra Wester 2004-5-21 27960 San Diego South Coast, Carlsbad, Agua Hedionda Ecological Reserve, off Park St. near Laguna Riviera Park, along foot trail along NE side of reserve 9 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
  UCR159007  Sonchus asper A. C. Sanders, Jennifer Jones 2005-6-22 31106 San Diego South Coast, Buena Vista Lagoon Ecological Reserve (DFG), Carlsbad, south side of lagoon on the east side of I-5 Fwy 12 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
  UCR163663  Sonchus asper Ted Rado 2005-7-31 s.n. Riverside Sonoran (Colorado) Desert, Coachella Valley, south edge of orange grove, 1.5 miles north of I-10 and 0.5 mi. west of Dillon Rd. 76 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
  UCR187467  Sonchus asper Diane Menuz 2006-6-6 137 Riverside Peninsular Range; Santa Ana Mtns., Santa Rosa Plateau, Miller Canyon, 1 hour hike from road 549 Comment
  UCR187469  Sonchus asper Diane Menuz, Carlos Navarro, Theresa Johnson 2006-4-21 046 Riverside Peninsular Range; Santa Ana Mtns., Santa Rosa Plateau, near Mesa de Burro, along waterline road just east of small stream 570 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
  UCR190275  Sonchus asper R. G. Swinney 1998-8-1 6617 Los Angeles San Gabriel Mtns., Vincent Gulch, c. 2.5 miles ESE of the summit of Mt. Baden-Powell, c. 0.6 mi. above confluence with San Gabriel River 1427 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
  UCR194080  Sonchus asper A. C. Sanders, D. L. Sanders 2008-3-2 34419 San Bernardino Transverse Range; San Bernardino Mtns., City Creek Ranger Station, on City Creek Rd. (Hwy 330) midway between Highland and Running Springs 792 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
  UCR210107  Sonchus asper R. G. Swinney 2008-10-16 9632 San Bernardino San Gabriel Mtns., Wrightwood, Twin Lakes at Wrightwood Country Club, SW of junction of Willow St. and Oriole Rd. 1841 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
  UCR256460  Sonchus asper R. G. Swinney 2010-6-8 13191 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
  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
  UCR263737  Sonchus asper Duncan S. Bell, Glen Morrison, Katie Roland 2014-6-4 7112 San Bernardino San Bernardino Mtns., Bighorn Mountains; San Bernardino National Forest; Arrastre Creek, at the southeast end of Horsethief Flat 1469 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
  UCR269603  Sonchus asper A. C. Sanders, Jim Malusa 2016-3-7 42120 Imperial Sonoran (Colorado) Desert, Chocolate Mountains Aerial Gunnery Range, c. 3.5 km NE (66 deg. ) of Salvation Pass well site 398 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
  UCR72698  Sonchus asper A. C. Sanders, E. J. Lott, Don Pendleton 1992-6-5 12370 San Bernardino San Bernardino Mtns., east of Yucaipa, Water Canyon, a tributary to Wildwood Canyon from the north. Old Hunt Ranch, c. 0.75 mi north of Wildwood Canyon Road 1067 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
  UCR76191  Sonchus asper Scott D. White 1993-6-20 1569 San Bernardino San Bernardino Mtns, Near USFS Rock Camp fire station, c. 2 air mi NNW of Lake Arrowhead North Bay 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
  UCR77060  Sonchus asper A. C. Sanders, E. J. Lott 1993-5-30 14127 San Bernardino Eastern Mojave Desert, Cornfield Spring Canyon, W slope of Providence Mtns, 4 mi SE of Kelso 976 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
  UCR83560  Sonchus asper Scott D. White 1993-8-7 1823 San Bernardino San Bernardino Mtns., Cienaga Seca Creek 2287 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
  UCR94757  Sonchus asper A. C. Sanders, E. J. Lott 1993-5-5 13935 San Bernardino Southern Mojave Desert, Rabbit Springs, south side of Rabbit Springs Road, along flood control district right-of-way 878 Comment
  UCR97196  Sonchus asper Steve Ogg 1995-6-26 s.n. San Bernardino San Bernardino Valley, Yucaipa: Crafton Hills community College just east of the college golf course 671 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
  UCSB53617  Sonchus asper Reisentz, Paul 1980-8-3 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
  UCSB53642  Sonchus asper Ferren, Wayne 1983-10-22 Mono 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; 5.9 miles N of Jean Blanc Rd. on Fish Slough Rd. to dirt rd. heading E., breeding pond area 1341 Comment
  UCSB54447  Sonchus asper Hickson, Diana 1986-4-6 Santa Barbara 1/4 mile NW of intersection of Calle Lindero and Rucker Rd., Lompoc, Burton Mesa 140 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
  UCSB56394  Sonchus asper Pritchett, David 1986-8-19 Santa Barbara Del Sol Vernal Pool Reserve, SE corner El Colegio Rd. and Camino Lindo, Isla Vista 9 Comment
  UCSB59381  Sonchus asper Fletcher, Martin 1980-3-29 Santa Barbara At Drakes Beach at the mouth of Canada De Santa Anita 1 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
  UCSB68531  Sonchus asper Schmalzer, P. 1986-3-18 Santa Barbara South of SLC-6, Vandenberg Air Force Base 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-BC365987  Sonchus asper E. A. McGregor 1921-7-18 s.n. Del Norte Requa and Vicinity. 3 miles N. on Crescent City road Comment
  CAS-BOT-BC365989  Sonchus asper Peter H. Raven 1954-6-15 7021 Inyo Near the springs s. of Deep Springs Lake 1463 Comment
  CAS-BOT-BC365990  Sonchus asper Ernest C. Twisselmann 1956-6-8 2914 Kings Temblor Range and the Western San Joaquin Valley. Tulare Lake Bed, about 5 miles north of South Lake Farms 57 Comment
  CAS-BOT-BC365993  Sonchus asper Dr. Barton W. Evermann 1918-3-29 s.n. Los Angeles Santa Catalina Isl. Comment
  CAS-BOT-BC365994  Sonchus asper Wesley O. Griesel 1961-6-3 s.n. Los Angeles Devils Gate Dam, Pasadena 457 Comment
  CAS-BOT-BC365995  Sonchus asper M. B. Dunkle 1939-4-2 7209 Los Angeles Southeast point, San Clemente Island Comment
  CAS-BOT-BC365996  Sonchus asper John Thomas Howell 1964-4-28 40541 Mariposa Just south of Morman [Mormon] Bar on road to Ben Hur 548 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-BC374401  Sonchus asper John Thomas Howell; Gordon True; Walter Knight; Irja Knight 1968-6-11 2369 Plumas Canyon of Butterfly Creek between Spanish Creek and Butterfly Valley Comment
  CAS-BOT-BC374402  Sonchus asper John Thomas Howell 1961-6-21 36684 Plumas Greenville 1097 Comment
  CAS-BOT-BC374403  Sonchus asper John Thomas Howell; H. Keith Wagnon 1980-5-26 53587 Plumas Lewisia Rock, Feather River Canyon 3.5 miles southwest of Belden 609 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-BC374410  Sonchus asper Lowell Ahart 1982-6-20 3631 Sutter South-east of the Dean Cabin, Dean Ranch, Sutter Buttes 350 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-BC374415  Sonchus asper John Thomas Howell 1932-3-13 8221 Ventura San Nicolas Island Comment
  CAS-BOT-BC374416  Sonchus asper Lowell Ahart 1979-6-25 s.n. Yuba One mile south of Challenge 700 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-BC374437  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-BC374439  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-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-BC374441  Sonchus asper Ernest C. Twisselmann 1954-11-9 1658 Kern Temblor Range and the Western San Joaquin Valley. Buena Vista Lake Bed 94 Comment
  CAS-BOT-BC374442  Sonchus asper Ernest C. Twisselmann 1954-11-9 1658 Kern Temblor Range and the Western San Joaquin Valley. Buena Vista Lake Bed 94 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-BC374448  Sonchus asper Gordon H. True 1968-7-5 4673 Marin Point Reyes Bird Observatory ca. 3mi. northwest of Bolinas at Arroyo Hondo 60 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-BC374460  Sonchus asper Beatrice F. Howitt 1963-10-21 1801 Monterey Santa Lucia Mountains. Bed of Carmel River about 2 mi. from the Farm Center (west) near the Dixon home 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-BC374465  Sonchus asper Josephine D. Randall 1910-1-4 s.n. Monterey Monterey Peninsula. Along Pipeline from Carmel to Pacific Grove Comment
  CAS-BOT-BC374466  Sonchus asper John Thomas Howell 1956-7-1 31646 San Francisco Front and Vallejo streets, San Francisco 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-BC374479  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-BC374487  Sonchus asper John Thomas Howell 1964-6-29 40822 San Luis Obispo Near St. Paul's Episcopal Church, 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-BC374489  Sonchus asper Margaret A. Barry 1937-7-17 216 San Mateo Coal Mine Ridge Comment
  CAS-BOT-BC374490  Sonchus asper Elizabeth McClintock; Carlyn Halde; Walter Knight; Walter Knight 1963-6-23 s.n. San Mateo San Bruno Mountain. Lower part of Colma Canyon 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-BC374495  Sonchus asper Ned Cahill 1974-4-30 227 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  CAS-BOT-BC374496  Sonchus asper Le Roy Abrams 1901-3-16 1144 San Mateo Woodside - Menlo Park 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-BC374522  Sonchus asper R. E. Frenkel 1964-7-13 675 Siskiyou Near Mount Shasta on 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-BC374530  Sonchus asper Peter Rubtzoff 1951-7-7 359 Sonoma Western branch of the Upper Marsh. Pitkin Marsh, near Forestville 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-BC374536  Sonchus asper Ernest C. Twisselmann 1967-5-30 13135 Tulare Sierra Nevada, Kern Plateau. Slope northwest of Lamont Meadow 1615 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-BC374551  Sonchus asper David D. Keck 1931-6-10 1208 Tuolumne Mather 1400 Comment
  CAS-BOT-BC374552  Sonchus asper Ira L. Wiggins 1968-6-19 20985 Tuolumne Rear of Lot 10, Bret Harte Drive, Twain Harte 1127 Comment
  CAS-BOT-BC374553  Sonchus asper Ira L. Wiggins 1971-5-31 21404 Tuolumne Along Groveland--Ward's Ferry Road 762 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
  HSC49594  Sonchus asper Linda M. Barker 1975-7-3 1100 Del Norte Old Gasquet Toll Rd., 0.2 mi. N of southern entrance 145 Comment
  HSC6216  Sonchus asper J. L. Baker 1965-3-27 20 Humboldt 4 mi. N of Arcata on North Bank Rd. 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
  HSC83780  Sonchus asper Clare R. Wheeler 1982-1-8 2871 Mendocino Surfwood Dr., Sholars Farm 61 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
  OBI38429  Sonchus asper Eric Wise 1981-9-29 1229 San Luis Obispo Lopez Cyn. Approx 6 mi NW of Hi Mtn Comment
  OBI38430  Sonchus asper Eric Wise 1981-6-27 770 San Luis Obispo Cuyama River, Pine cyn forest serv. stn. Comment
  OBI38433  Sonchus asper Eric Wise 1981-6-7 473 San Luis Obispo Cuyama River, 6.7 mi W of New Cuyama Comment
  OBI38434  Sonchus asper Eric Wise 1981-6-7 458 San Luis Obispo Cuyama River, 6.7 mi W of New Cuyama Comment
  OBI45257  Sonchus asper Francis X. Villablanca 1986-5-17 36 San Luis Obispo .5 mi S of Ardath St .5 mi W of Pineridge Rd. SW facing cyn. First slope from beach 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
  POM18232  Sonchus asper P. A. Munz 1923-4-10 6700 Los Angeles San Clemente Island: deep canyon south of Lemon Tank on west coast 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
  POM6107  Sonchus asper Crawford, Hiatt 1919-3-28 s.n. Los Angeles Topango C.moist area. Comment
  POM6196  Sonchus asper N. R. Shaw 1900-6-11 51 Los Angeles Claremont. 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
  RSA153128  Sonchus asper E. Robinson, B. Lindner 1935-5-19 9595 Fresno Friant gravel pits about 1 mile S of Friant. 107 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
  RSA474073  Sonchus asper M. B. Dunkle 1939-4-2 7209 Los Angeles San Clemente Island, southeast point. 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
  RSA597577  Sonchus asper L. C. Wheeler 1970-3-20 s.n. San Bernardino San Bernardino Mountains. Lone Pine Canyon, Lost Lake. 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
  RSA696193  Sonchus asper Keith E. Hoffmaster 1927-6-30 s.n. San Diego San Onofre Comment
  RSA947  Sonchus asper J. T. Howell 1928-4-7 903 Orange Santa Ana River bottom, Rancho Santa Ana 152 Comment
  RSA94756  Sonchus asper Edward Palmer 1875-1 s.n. San Diego S california 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
  SBBG34964  Sonchus asper T. L. Secrest 1948-6-8 Mariposa near Merced River Rd 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
  SD30993  Sonchus asper Edith A. Purer 1931-3-26 Los Angeles Palos Verdes Hills, roadside Comment
  SEINET10474007  Sonchus asper Mary Susan Taylor 1981-5-14 Taylor 3713 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 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
  SEINET4016300  Sonchus asper M. B. Dunkle 1939-1 7209 Los Angeles Southeast point, San Clemente 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
  UC1300214  Sonchus asper Robert M. Lloyd 1963-7-12 3014 Inyo n portion Deep Springs Valley (Antelope Springs, White Mountains); White Mountains, Antelope Springs, n portion Deep Springs Va 1706 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
  UCSB38639  Sonchus asper Cowan, Clark 1974-5-9 Santa Barbara 200 ft. above W. fork trail, 3/4 mi. on W. fork of Cold Springs Trail, Mountain Dr., Montecito 350 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
  UCSB45724  Sonchus asper Welton, Patti 1983-7-28 Santa Barbara 25 m. south of Carneros Dam, Goleta; Lake Los Carneros County Park 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-BC229757  Sonchus asper subsp. asper G. Block; D. Sherpa; T. Steiner; et al. 2012-8-25 1563 Marin Marin Municipal Water District Lands: Mount Tamalpais. In Potrero Meadow off Laurel Dell Rd., near edge of slough sedge and Potrero Meadow Trail. Comment
  CAS-BOT-BC402142  Sonchus asper subsp. asper LeRoy Gross; Duncan S. Bell; Eric Garcia 2014-6-10 6583 Fresno Sierra Nevada; Southern Sierra Nevada region: Monarch Wilderness; Trail 30E01 (forest service, guide to the Monarch & Jennie Lakes Wilderness map). Off Highway 180, along the South Fork of Kings River. Deer Cove Creek to Deer Cove Saddle, where a trail 1992 Comment
  CAS-BOT-BC54290  Sonchus asper subsp. asper Bruce Bartholomew 1993-6-13 6646 Modoc Vicinity of hot spring, ca. 0.6 km NE of Leonard Hot Spring, E side of Surprise Valley. 1430 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
  CATA876  Sonchus asper subsp. asper Mark L. Hoefs, Robert F. Thorne, John M. Tucker, Grady L. Webster 1992-3-30 1687 Los Angeles Santa Catalina Island: Canyon behind Haypress Reservoir 377 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
  CHSC102998  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
  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
  CHSC107288  Sonchus asper subsp. asper L. P. Janeway; B. Castro 2011-7-9 10511 Colusa Sacramento Valley. Extreme west edge of Sacramento Valley; 1.5 km southeast of Funks Reservoir and 0.1-0.6 km northeast of Tehama-Colusa Canal. Just off of the northwest corner of the marsh. 49 Comment
  CHSC107291  Sonchus asper subsp. asper L. P. Janeway 2011-6-29 10408 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC108129  Sonchus asper subsp. asper Lowell Ahart 2011-10-29 17723 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  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
  CHSC112308  Sonchus asper subsp. asper Lowell Ahart; John Dittes, Josephine Guardino 2013-4-26 18603 Mendocino North Coast. Base of eroding cliffs, above the sand beach, 1.1 miles (air) southeast of Anchor Bay, 2.0 miles (air) northwest of mouth of Gualala River. 3 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
  CHSC116608  Sonchus asper subsp. asper Lowell Ahart; Josephine Guardino 2016-4-19 20769 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. 1.4 miles northwest of Los Vaqueros Reservoir Marina, 1.9 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 144 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
  CHSC58161  Sonchus asper subsp. asper Vernon H. Oswald 1992-6-18 4985 Plumas Lassen Volcanic National Park. Warner Valley: N side of Hot Spring Creek ca. 0.2 mi upstream from the boundary of the park. 1609 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
  CHSC66155  Sonchus asper subsp. asper Vernon H. Oswald; Lowell Ahart 1996-5-27 7669 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 S paddock of Tract 7, Sanctuary II. 32 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
  CHSC88533  Sonchus asper subsp. asper Jenny Marr; Beth Hendrickson 1999-5-28 Tehama Vicinity of Long Hollow, Grizzly Creek, and Bluedoor Flat. 289 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
  CHSC98828  Sonchus asper subsp. asper Lowell Ahart; John Dittes, Josephine Guardino 2008-4-13 14687 Merced On dry soil, along the fence, about 40 yards east of the wire gate on the south side of Sandy Mush Road, 3.7 miles west of Highway 99, about 8.5 miles south-southeast of Merced. 53 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
  GMDRC3785  Sonchus asper subsp. asper J. Andre, T. La Doux, Ron Kelley 2009-5-29 11362 Inyo Owens Valley: Owens Valley: west margin of Warren Lake (playa), just E. of Big Pine Canal and County Rd, approx 3 mi. NNW of town of Big Pine. USGS 7.5 min. Quad: Big Pine 37 deg. 11.5' N 118 deg. 20.092' W. Elev. 3945 ft. 1203 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
  JEPS100169  Sonchus asper subsp. asper G. Smick 2003-5-8 GAS 182 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site 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
  JEPS107656  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
  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
  JOTR36406  Sonchus asper subsp. asper La Doux, Tasha, K. Callahan, M. Harding, M. Levandowski 2013-5-9 3356 San Bernardino Joshua Tree National Park. Wonderland of Rocks; Keys Ranch, muddy flats behind Keys Ranch Dam (STOP2) 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
  OBI65009  Sonchus asper subsp. asper Greg Wilvert 2005-4-5 153 San Luis Obispo SE half of the Caliente Range. Wells spring 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
  RSA0038493  Sonchus asper subsp. asper LeRoy Gross, Duncan S. Bell, Eric Garcia 2014-6-10 6583 Fresno Monarch Wilderness; Trail 30E01 (forest service, guide to the Monarch & Jennie Lakes Wilderness map). Off Highway 180, along the South Fork of Kings River. Deer Cove Creek to Deer Cove Saddle, where a trail branches off to Choke Creek., Started near 36.80413N 118.71516W. Ended near 36.82590N 118.72246W. 1348 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
  RSA0067877  Sonchus asper subsp. asper Erika M. Gardner, Kristin Forgrave 2013-6-29 428 Kern Canyon bottom of Sage Canyon. 1500 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
  RSA780489  Sonchus asper subsp. asper Naomi Fraga, Kathleen Ashbaker, Joshua Paolini, Jennifer Pilapil 2010-7-29 3676 San Bernardino Cienega Seca near Heart Bar 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
  RSA787934  Sonchus asper subsp. asper Naomi Fraga, Kathleen Ashbaker, Joshua Paiolini 2010-7-12 3581 San Bernardino The Nature Conservancy Meadow (TNC Meadow). Bounded by Swan Drive, Andes Lane, and Garstin Drive, in Big Bear. 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
  SBBG128478  Sonchus asper subsp. asper R. Burgess, P. Munro 2013-4-20 9282 Ventura Joel McCrea Wildlife Preserve, E-side of Norwegian Grade, small drainage at S end of Preserve; Thousand Oaks 273 Comment
  SBBG132621  Sonchus asper subsp. asper R. Burgess, P. Munro 2013-7-10 9376 Ventura Sandstone Hills Trail N of Pathfinder Avenue, Simi Hills; Thousand Oaks 424 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
  SD138182  Sonchus asper subsp. asper John W. Brown 1994-4-17 MM 418 San Diego Trail from Peg Leg Mine to peak McGinty Mountain, near Jamul. Comment
  SD148431  Sonchus asper subsp. asper Jon Rebman 2000-4-13 6381 San Diego San Diego Urban Canyons, North Park: Switzer Canyon 99 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
  SD164288  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory and 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 1623 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
  SD165762  Sonchus asper subsp. asper Dick Schwenkmeyer, Jan Maxted 2005-4-10 121 San Diego Jamul, North side of Lyons Peak, Honey Springs Road to N on Bratton Valley Rd to N on Granite Oaks Rd. 860 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
  SD167759  Sonchus asper subsp. asper Jim Lightner 2005-3-10 223 San Diego 3.5 mi SE of Alpine. Lucky Light Ranch (inholding in Cleveland National Forest) N off of Bell Bluff Truck Trail, ~0.5 mi E of Bell Bluff, south of Sweetwater River 868 Comment
  SD167760  Sonchus asper subsp. asper Jeannie Gregory, Joe Barth 2005-7-23 1852 San Diego Town of Alpine, Viejas West private property, 1.6 miles WSW of Viejas Mountain summit, 0.6 miles NW of intersection of Anderson Road and Victoria Drive 601 Comment
  SD167761  Sonchus asper subsp. asper Jeannie Gregory, John Gregory 2005-7-31 1881 San Diego Double S Ranch(on road to Lower Lake), N of Angel Mountain Road, 11 mi NW of Santa Ysabel, 2 mi W of Lake Henshaw, 4 mi E of Pine Mountain summit 1021 Comment
  SD168450  Sonchus asper subsp. asper Jon P. Rebman, Parabotanists 2005-3-4 11055 San Diego City of La Mesa, east of San Diego; northwest side of Lake Murray on City MSCP property 174 Comment
  SD168451  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory, M. Mulligan, & K. Rich 2005-3-3 11040 San Diego Otay Mountain Ecological Reserve (California Dept. of Fish & Game): Southeast of Otay Lake; approx. 1.6 miles south of Otay Lakes Road 353 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
  SD172776  Sonchus asper subsp. asper MaryAnn Brooks-Gonyer, Beverly Pecunia 2005-5-23 233 San Diego About 10 miles north of city of Escondido, east of Champagne Blvd, at intersection with Gopher Canyon Road. 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
  SD177886  Sonchus asper subsp. asper Jon P. Rebman, Jeannie Gregory 2007-3-25 13046 San Diego Cleveland National Forest: Pine Creek Wilderness; north of Barrett Lake, southeast of Alpine; north of the Horsethief Canyon Trailhead on Lyons Valley Road, along a trail in the bottom of Horsethief Canyon; note that this area was partially burned in 2006 634 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
  SD177888  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory, K. Rich, M. Wall 2006-5-18 12728 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
  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
  SD178739  Sonchus asper subsp. asper Ian Cain, Nova Fraser, Michelle Averbeck, Phil Lambert 2006-4-29 241 San Diego City of Lakeside. Silverwood Wildlife Sanctuary. 13003 Wildcat Canyon Road. North section of parking area. 455 Comment
  SD178740  Sonchus asper subsp. asper Melvin M. Sweet 2006-4-26 328 San Diego City of San Diego (La Jolla). On canyon slopes surrounding business at 4320 Westerra Court; 0.5 mi NW of inters of Genesee Ave and Eastgate Mall, btwn I-5 and I-805. 105 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
  SD179794  Sonchus asper subsp. asper Jon P. Rebman, J. Gregory, M. Mulligan & J. Rocks 2007-4-23 13197 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
  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
  SD183786  Sonchus asper subsp. asper Elizabeth P. Lowe 2006-5-26 116 San Diego San Marcos. E of La Moree Park, just NW of the bend of the road on Sandy Lane, N of La Moree Rd and S of Hwy 78. 239 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
  SD184679  Sonchus asper subsp. asper David DiDonato 2006-4-22 53 San Diego Otay Mountain Ecological Reserve (California Dept of Fish & Game): East of Otay Lake, I(c) mi South of Otay Lakes Road. 228 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
  SD187757  Sonchus asper subsp. asper Michael G Simpson 2006-5-24 2717 San Diego Iron Mountain, Poway, near southeastern edge of pond, just NE of inters of Poway Rd and Hwy 67, ca. 1 mile northwest of Iron Mountain peak. 518 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
  SD190976  Sonchus asper subsp. asper Ian Cain, E. Clayton, D. Driscoll, R. Humphrey 2007-4-15 383 San Diego City of Solana Beach. San Elijo Ecological Reserve, E of Interstate 5, SE of Manchester Ave, N of El Camino Real, SE section. 120 meters north of trail intersection north of Santa Helena entrance 0 Comment
  SD192391  Sonchus asper subsp. asper Jim Rocks, M. Mulligan, W. Schmidtmann, D. Bieber, M. Dinkins 2007-5-10 391 San Diego Camp Pendleton Marine Corps Base, Delta Training Area, San Mateo Canyon adjacent to perennial pool in San Mateo Creek, ca. 4 mi NE of HOLF, just E of Artillary Firing Area A. 124 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
  SD192396  Sonchus asper subsp. asper Victoria Marshall 2007-3-1 466 San Diego Poway, on the South Poway Trail 0.25 mi east of Community Rd and 0.25 mi south of Poway Rd. 210 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
  SD193643  Sonchus asper subsp. asper Mike D. Angel 2006-6-18 504 San Diego El Capitan Open Space Preserve. Wildcat Canyon Road Entrance. 3 miles east of San Vincente Reservoir. 1.5 miles south of Barona. About 4 miles North of I-8. Near 1 mile marker on trail. 590 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
  SD198272  Sonchus asper subsp. asper Carrie Schneider, Julie Taylor 2008-4-5 203 San Diego West of Encanto, Chollas Radio Canyon Open Space, South of Chollas Valley, North of Market St, just west of the intersection of Bollenbacher St. and Kenwood St. 70 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
  SD200727  Sonchus asper subsp. asper Margaret R. Mulligan, W. Schmidtmann, K. Mabb 2008-3-26 2159 San Diego Camp Pendleton Marine Corps Base, Papa One Training Area, west side of Pulgas Lake. 120 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
  SD201418  Sonchus asper subsp. asper Margaret R. Mulligan, J. Rebman, B. Ladiere 2009-4-9 2889 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
  SD201420  Sonchus asper subsp. asper Margaret R. Mulligan, J. Rocks, M. Dinkins 2009-5-12 3048 San Diego Camp Pendleton Marine Corps Base, Hotel Training Area, along Camp De Luz Road which runs along De Luz Creek, ca. 2 mi N of Camp De Luz. 71 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
  SD205508  Sonchus asper subsp. asper Karen Rich, Gary Erbeck 2008-3-23 311 San Diego Del Mar, Gonzales Canyon Open Space Preserve, just E of Torrey Highlands Park, about 200 yds N of trailhead at intersection of Lansdale Dr. and Brixton Pl., W-facing side of canyon 66 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
  SD214836  Sonchus asper subsp. asper Larry Hendrickson 2009-5-8 3901 San Diego Mesa Grande, San Dieguito River Park, Joint Powers Authority property. 2.4 air miles WNW of intersection of State hwy. 78-79 and 2.6 air miles SSW of intersection of Mesa Grande Road and access road to property. 856 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
  SD219375  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann & G. Kenney 2012-2-16 22411 San Diego Camp Pendleton: at Lake O'Neill; south of the hospital and east of Santa Margarita Road; on the east end of the lake along the trail around the lake 35 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
  SD221589  Sonchus asper subsp. asper Jon P. Rebman, W. Schmidtmann, L. Aerne & V. Marshall 2011-8-23 22310 San Diego Cleveland National Forest: around a large pond in Ritchie Creek just north of Eagle Peak Road; east side of pond 844 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
  SD238071  Sonchus asper subsp. asper Jon P. Rebman, J. Green, T. Barckley, C. Brennen, J. Carlstrom 2012-6-19 24890 San Diego Daley Ranch: northeast of Escondido; west of Co. Hwy. S6 and north of Dixon Lake; along Creek Crossing Trail in canyon of Jack Creek 370 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
  SD238636  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 49 Comment
  SD241266  Sonchus asper subsp. asper Warren Schmidtmann 2011-7-21 286 San Diego Cleveland National Forest; on a hill between Ritchie Creek and Deadman Flat 1.2 miles N of Eagle Peak Road; near manmade pond 997 Comment
  SD242525  Sonchus asper subsp. asper Warren Schmidtmann, John La Grange 2013-4-10 361 San Diego Tecate Peak; on road to Tecate Peak near Box Spring; 2.58 miles W of junction Tecate Mission Road and Highway 188 (Tecate Road). 693 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
  SD243592  Sonchus asper subsp. asper Larry Hendrickson 2011-5-31 5356 San Diego Pine Hills, Pine Hills Road (Eagle Way on some maps), 3.0 air miles SW of Julian and 0.5 mile SE of intersection with Boulder Creek Road. 1230 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
  SD251007  Sonchus asper subsp. asper Mary Jo Churchwell 2012-5-5 652 San Diego Anza-Borrego Desert State Park; E of Ranchita; along Pena Spring Road 0.43 mile N of Montezuma Valley Road (S-22) 1036 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
  SD253695  Sonchus asper subsp. asper John LaGrange, Mary Rider 2013-4-21 1223 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
  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
  SD259330  Sonchus asper subsp. asper A. C. Sanders, Jim Malusa 2016-3-7 42120 Imperial Chocolate Mountains Aerial Gunnery Range, ca. 3.5 km northeast (66a^z) of Salvation Pass well site. Confluesnce of major washes among rolling gravelly hills. 398 Comment
  SD262003  Sonchus asper subsp. asper Jon Rebman, W. Schmidtmann, M. Mulligan, & G. Kenney 2016-4-6 31315 San Diego Camp Pendleton: northwestern portion of Base; Alpha Two Training Area; San Onofre Creek riparian area east of I-5 and just south of Basilone Road 17 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
  SDSU12892  Sonchus asper subsp. asper Michael G. Simpson, Lee Simpson 1998-4-4 4 IV98D San Diego East side of Cowles Mtn., along swithback trail, just below 'meadow,' Mission Trails Regional Park. 274 Comment
  SDSU13897  Sonchus asper subsp. asper Michael G. Simpson, Claudia Luke & Shane Waddell 2000-5-23 2144 Riverside Santa Margarita Ecological Reserve (SDSU), southeastern region, ca. 1/4 mile north of El Valle meadow. 646 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
  SEINET7990718  Sonchus asper subsp. asper Jon P. Rebman 2000-4-13 6381 San Diego Switzer Canyon, Switzer Canyon . 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
  UCD136140  Sonchus asper subsp. asper Clifton F. Smith 1945-6-9 1349 Santa Barbara southwest of Botanic Garden, Mission Canyon, Santa Barbara. 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
  UCD136148  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
  UCD151007  Sonchus asper subsp. asper D. S. Park 2010-5-14 87 Yolo UCD Arboretum. Near Creek. 29 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
  UCD73164  Sonchus asper subsp. asper Ayzik Solomeshch 2004-4-12 s. n. Merced Great Valley Grasslands State Park, San Joaquin River Basin, 4 mi. south of intersection of Hwy 140 and 165. 10 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
  UCR147034  Sonchus asper subsp. asper George K. Helmkamp, E. A. Helmkamp 2004-10-8 8839 San Luis Obispo Central Coast, Biddle Regional Park, 7 mi NE of Arroyo Grande along Lopez Drive and Arroyo Grande Creek 136 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
  UCR197121  Sonchus asper subsp. asper LeRoy Gross 2007-3-13 2600 Los Angeles Transverse Ranges; Verdugo Mountains, southern side of the range. Stough Canyon, northwest of the the nature center along canyon bottom at juction of a spring and creek flowing from the northeast 496 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
  UCR202370  Sonchus asper subsp. asper Margaret R. Mulligan, Jeannie Gregory, Suzann M. 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 Hwy I-5. Square G4 3 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
  UCSC008153  Sonchus asper subsp. asper Megan Bontrager 2011-5-12 s.n. Santa Cruz Santa Cruz, Great Meadow, University of California, Santa Cruz 160 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
  JROH1256  Sonchus asper subsp. asper John H. Thomas 1968-5-3 14438 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1258  Sonchus asper subsp. asper John Hunter Thomas 1981-5-8 20555 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1259  Sonchus asper subsp. asper John Hunter Thomas 1986-5-15 24043 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  LA201355  Sonchus asper subsp. asper Arthur C. Gibson; 2001-4-20 4135 Ventura 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
  RSA0082715  Sonchus asper subsp. asper Ernest C. Twisselmann 1965-7-24 11093 Kern Castaic Lake. 1051 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
  RSA574946  Sonchus asper subsp. asper R. G. Swinney 1993-10-8 2666 San Bernardino Controversy Spring, at head of Cajon Canyon, SE of Mt. Top jct., .5 miles S of Hwy 138 on FS rd 3N37. 1402 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
  RSA611049  Sonchus asper subsp. asper L. C. Wheeler 1968-5-12 s.n. Los Angeles Spring 2/3 mile E of Juniper Bowl; Juniper Hills. 1158 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
  RSA641645  Sonchus asper subsp. asper L. C. Wheeler 1967-5-31 9809 Los Angeles Pallet Creek at confluence with Big Rock Creek 1082 Comment
  RSA788954  Sonchus asper subsp. asper Peter Rubtzoff 1955-9-24 2153 Sonoma Duncans Mills Marsh. Comment
  RSA788955  Sonchus asper subsp. asper Peter Rubtzoff 1960-5-18 4391 Sonoma Bodega Head Marsh. Comment
  SEINET10615452  Sonchus asper subsp. asper David B. Dunn 1941-2-22 Dunn 684 Los Angeles UCLA campus along Westwood Blvd. Comment
  UC2028175  Sonchus asper subsp. asper Barbara Ertter 1998-5-3 16044 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  UCD133978  Sonchus asper subsp. asper Frederica Bowcutt 1987-5-28 1052 Mendocino Sinkyone Wilderness State Park, between Anderson and Dark Gulchs along road to Hotel Gulch. 335 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
  UCD134011  Sonchus asper subsp. asper G. F. Hrusa; S. A. Wagner 1992-4-22 9297 San Joaquin Caswell Memorial State Park. West of the Quercus lobata-dominated woodland. 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
  UCD136129  Sonchus asper subsp. asper Mary M. Hektner; Cathy Hendel 1974-7-24 163 Sonoma alongside Kirkwood House on Pacific Reach, Unit 24 Owners' Map, Sea ranch, near State Highway 1. Comment
  UCD136130  Sonchus asper subsp. asper E. M. Johnston 1915-1 W- 139 J Butte Biggs. 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
  UCD136138  Sonchus asper subsp. asper Bob Rodin 1943-5-29 231 Alameda By side of upper road east of Botanical Garden. Strawberry Canyon, University of California Campus, Berkeley. 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
  UCD39148  Sonchus asper subsp. asper Beecher Crampton 1964-10-3 7214 San Francisco San Francisco, Townsend St. and Embarcadero. Comment
  UCSC001979  Sonchus asper subsp. asper Randall Morgan 2003-5-4 s.n. Monterey Fort Ord, UC Reserve Site: D/3 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



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