Search Results — 917 specimen records retrieved (647 records with coordinates)
Results for search: Scientific name=Xanthium strumarium (including nomenclatural synonyms);   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
  CAS-BOT-BC136304  Xanthium strumarium G. P. Rixford 1912-9-5 s.n. El Dorado Shingle Springs Comment
  CAS-BOT-BC136308  Xanthium strumarium J. H. Thomas 1954-9-6 30082 A Calaveras Angels Camp Comment
  CAS-BOT-BC136310  Xanthium strumarium Greg de Nevers 2001-7-8 12579 Lake Clear Lake, Lake County Land Trust, Rodman Slough 475 Comment
  CAS-BOT-BC136311  Xanthium strumarium Luella Bass 1980-8-3 s.n. Lassen Standish Comment
  CAS-BOT-BC136312  Xanthium strumarium Georgia Bentley 1919-10-1 s.n. Sacramento Sacramento Comment
  CAS-BOT-BC136313  Xanthium strumarium Alice Eastwood 1917-10-21 6716 San Benito The Pinnacles Comment
  CAS-BOT-BC136314  Xanthium strumarium John H. Thomas 1960-6-25 8790 San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street. 7 Comment
  CAS-BOT-BC136317  Xanthium strumarium S. B. Parish 1913-2-7 4838 Riverside Along [?] railroad track, 1 mi. south of Mecea [Mecca] -60 Comment
  CAS-BOT-BC136318  Xanthium strumarium S. B. Parish 1913-9-20 8610 Riverside Mecca, Salton Sink -57 Comment
  CAS-BOT-BC136319  Xanthium strumarium S. B. Parish 1912-10-21 8360 Imperial Colorado River bottoms, Ft [Fort] Yuma. Comment
  CAS-BOT-BC136320  Xanthium strumarium S. B. Parish 1912-10-21 8359 Imperial Colorado River bottoms, Ft [Fort] Yuma Comment
  CAS-BOT-BC136321  Xanthium strumarium H. E. Packard 1916-1-1 s.n. Imperial Meloland, Colorado Desert Comment
  CAS-BOT-BC136323  Xanthium strumarium J. H. Thomas 1950-4-15 1547 Santa Cruz Along Pajaro River, just inside of county line in SE corner of county. 30 Comment
  CAS-BOT-BC172585  Xanthium strumarium Sarah J. De Groot; Aydee Virgen; Charles Land 2004-6-26 4368 San Bernardino Whipple Mountains: Along Rio Vista Dr. near Rahun Trail. Colorado River Indian Reservation 98 Comment
  CAS-BOT-BC300553  Xanthium strumarium A. Williams; R. Brostrom; F. Leist 2013-6-8 13270 Marin Mount Tamalpais. Marin Municipal Water District lands: Bullfrog Road, knoll north of quarry Comment
  CAS-BOT-BC382122  Xanthium strumarium Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC382124  Xanthium strumarium E. A. McGregor 1917-8-20 1061 Imperial 3 mi E of El Centro Comment
  CAS-BOT-BC383674  Xanthium strumarium Lowell Ahart 1986-10-16 5408 Butte Below the high water line of Lake Oroville, about 1/10 mile east of the Enterprise Launch Area, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville 274 Comment
  CAS-BOT-BC383675  Xanthium strumarium A. A. Heller 1916-9-5 12647 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC383676  Xanthium strumarium A. A. Heller 1916-9-5 12647 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC383677  Xanthium strumarium John Thomas Howell 1961-9-22 36720 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC383682  Xanthium strumarium A. A. Heller 1914-7-31 11629 Butte Sacramento Valley about 6 miles northwest of Chico Comment
  CAS-BOT-BC383685  Xanthium strumarium E. M. Zeile 1921-9-17 1110 Contra Costa Rodeo Comment
  CAS-BOT-BC383695  Xanthium strumarium Ernest C. Twisselmann 1972-9-22 19273 Kern Bed of Lake Isabella ca. 1 mile south of the Kernville airport 762 Comment
  CAS-BOT-BC383698  Xanthium strumarium John Thomas Howell 1970-9-22 47267 Kern Along Kern River between Kernville and River Kern 822 Comment
  CAS-BOT-BC383704  Xanthium strumarium Frank J. Kirby 1957-9-1 1014 Kern Cane Brake Creek, 2 mi. west of Walker Pass 1310 Comment
  CAS-BOT-BC383705  Xanthium strumarium John Thomas Howell 1973-11-1 50293 Kern Bank of Kern River, Hart Memorial Park near Bakersfield 146 Comment
  CAS-BOT-BC383706  Xanthium strumarium Alice Eastwood 1926-8-15 13964 Kern Poso Creek, Granite Station 518 Comment
  CAS-BOT-BC383707  Xanthium strumarium Alice Eastwood 1913-9-25 3513 Kern Bakersfield Comment
  CAS-BOT-BC383708  Xanthium strumarium Alice Eastwood 1913-9-25 3489 Kern Bakersfield Comment
  CAS-BOT-BC383711  Xanthium strumarium Peter H. Raven 1957-9-21 11317 Los Angeles At n.w. end of U.C.L.A. campus, Los Angeles Comment
  CAS-BOT-BC383713  Xanthium strumarium Ward B. Holt 1952-9-11 s.n. Madera Bass Lake 1066 Comment
  CAS-BOT-BC383722  Xanthium strumarium Alice Eastwood 1918-9-6 7967 Marin Mill Valley Comment
  CAS-BOT-BC383723  Xanthium strumarium Mrs. Alexander McCallum 1894-7-1 s.n. Mendocino Glen Blair [Glenblair] Comment
  CAS-BOT-BC383730  Xanthium strumarium Doris K. Kildale 1928-7-18 5671 Mendocino 1 mile north of Willits, on Redwood highway Comment
  CAS-BOT-BC383731  Xanthium strumarium Alice Eastwood 1919-9-26 9347 Mendocino Laytonville Comment
  CAS-BOT-BC383732  Xanthium strumarium John H. Thomas 1970-4-15 15579 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  CAS-BOT-BC383735  Xanthium strumarium John Thomas Howell 1963-8-5 39911 Monterey Along Watsonville-San Juan Road, about 2 miles south of Aromas Comment
  CAS-BOT-BC383741  Xanthium strumarium Peter H. Raven 1951-10-28 3937 Napa Strand at w. end of Conn Lake 152 Comment
  CAS-BOT-BC383744  Xanthium strumarium Gordon H. True 1961-8-27 184 Nevada G. H. True Ranch, 7 miles south-west of Grass Valley on McCourtney Road 548 Comment
  CAS-BOT-BC383745  Xanthium strumarium Ira L. Wiggins 1965-10-24 20283 Orange Along Skyline Drive near intersection with Raymond Street, Fullerton Comment
  CAS-BOT-BC383750  Xanthium strumarium John Thomas Howell 1959-9-21 34804 Plumas Near Paxton 883 Comment
  CAS-BOT-BC383751  Xanthium strumarium Lowell Ahart 1981-9-6 3094 Plumas 1 1/2 miles SW of Crescent Mills 1200 Comment
  CAS-BOT-BC383753  Xanthium strumarium Philip A. Munz 1935-10-21 14656 San Bernardino Rincon Comment
  CAS-BOT-BC383754  Xanthium strumarium S. B. Parish No date on label s.n. San Bernardino San Bernardino Valley Comment
  CAS-BOT-BC383755  Xanthium strumarium Philip A. Munz 1935-10-21 14656 San Bernardino Rincon Comment
  CAS-BOT-BC383756  Xanthium strumarium Ira L. Wiggins 1927-8-31 2701 San Diego Near Fox farm above Boulder Creek, near Cuyamaca Lake Comment
  CAS-BOT-BC383757  Xanthium strumarium Ira L. Wiggins 1927-8-29 2598 San Diego Along Hatfield Creek 4 miles east of Ramona on highway to Santa Ysabel Comment
  CAS-BOT-BC383758  Xanthium strumarium Ira L. Wiggins 1927-5-7 2567 San Diego 1 mile south of Lakeside on road connecting with Alpine-El Cajon highway Comment
  CAS-BOT-BC383759  Xanthium strumarium Roxana S. Ferris 1956-9-15 13065 San Diego Road crossing of Jamul Creek a little above eastern arm of Lower Otay Reservoir Comment
  CAS-BOT-BC383760  Xanthium strumarium S. B. Parish 1913-10-13 8715 San Diego Potrero Grade, Tecate Mt. Comment
  CAS-BOT-BC383761  Xanthium strumarium Peter H. Raven; R. Snow 1957-7-27 11140 San Diego Strand of Lake Henshaw Comment
  CAS-BOT-BC383762  Xanthium strumarium Lewis S. Rose 1935-7-10 35297 San Diego Ramona 426 Comment
  CAS-BOT-BC383763  Xanthium strumarium LeRoy Abrams 1904-6-1 4100 San Diego Calexico, Imperial Valley Comment
  CAS-BOT-BC383764  Xanthium strumarium E. A. McGregor 1918-10-6 2049 San Diego Colorado Desert. At Ruby's P.O. 914 Comment
  CAS-BOT-BC383765  Xanthium strumarium S. G. Stokes 1895-6-11 s.n. San Diego Chollas Valley Comment
  CAS-BOT-BC383766  Xanthium strumarium Eric Walther 1922-10-5 s.n. San Francisco Golden Gate Park, San Francisco Comment
  CAS-BOT-BC383768  Xanthium strumarium Johanna Wilkens 1920-10-1 s.n. San Francisco San Francisco Comment
  CAS-BOT-BC383769  Xanthium strumarium John Thomas Howell 1932-10-16 10848 San Joaquin Bed of Corral Hollow Creek, 8 miles from Tracy on Tesla Road Comment
  CAS-BOT-BC383770  Xanthium strumarium David D. Keck 1931-10-18 1317 San Joaquin Simms Station, Tidewater Southern R.R., 7 miles east of Manteca 23 Comment
  CAS-BOT-BC383777  Xanthium strumarium R. F. Hoover 1966-9-16 10029 San Luis Obispo Santa Margarita Creek 2 mi. n. of Santa Margarita Comment
  CAS-BOT-BC383779  Xanthium strumarium Henry M. Pollard 1957-10-17 s.n. Santa Barbara So. Pac. [Southern Pacific] R.R., Summerland Comment
  CAS-BOT-BC383784  Xanthium strumarium Henry M. Pollard 1957-10-28 s.n. Santa Barbara Shoreline of Cachuma Lake, Santa Ynez Valley Comment
  CAS-BOT-BC383785  Xanthium strumarium Henry M. Pollard 1957-10-17 s.n. Santa Barbara So. Pac. R.R., Summerland Comment
  CAS-BOT-BC383786  Xanthium strumarium Alice Eastwood 1917-7-29 s.n. Santa Barbara Santa Barbara Comment
  CAS-BOT-BC383787  Xanthium strumarium Johnson 1894-9-1 s.n. Santa Clara Near San Jose Comment
  CAS-BOT-BC383792  Xanthium strumarium John H. Thomas 1956-9-8 6444 Santa Clara Stanford University Campus. Along Mayfield Ave. between Stanford Ave. and Frenchman's Road 15 Comment
  CAS-BOT-BC383793  Xanthium strumarium Josephine D. Randall 1907-6-21 101 Santa Clara Santa Cruz Peninsula. Lake Lagunita, Stanford University Comment
  CAS-BOT-BC383796  Xanthium strumarium J. H. Thomas 1954-7-9 4356 Santa Clara Carnadero Creek at intersection of Thomas Road, about 1 mile south of Gilroy 60 Comment
  CAS-BOT-BC383797  Xanthium strumarium John H. Thomas 1955-7-9 5229 Santa Clara Dry bed of Lake Lagunita. Stanford University 30 Comment
  CAS-BOT-BC383798  Xanthium strumarium John Thomas Howell 1933-9-17 11679 A Solano Just east of Suisun on road to Rio Vista Comment
  CAS-BOT-BC383800  Xanthium strumarium John Thomas Howell 1933-9-17 11690 Solano Marsh bordering Sacramento River at Collinsville Comment
  CAS-BOT-BC383801  Xanthium strumarium Marian L. Campbell 1920-8-17 s.n. Solano Cordelia Comment
  CAS-BOT-BC383804  Xanthium strumarium John Thomas Howell 1946-8-17 22853 Sonoma The Laguna north of Sebastopol Comment
  CAS-BOT-BC383808  Xanthium strumarium John Thomas Howell 1974-9-19 50882 Sutter 1.7 miles south of Robbins on road to Knights Landing 7 Comment
  CAS-BOT-BC383809  Xanthium strumarium Lowell Ahart 1981-9-10 3141 Sutter South Butte, Sutter Buttes 100 Comment
  CAS-BOT-BC383814  Xanthium strumarium John Thomas Howell 1967-11-3 44056 Tulare About 4.5 miles east-northeast of Pixley 83 Comment
  CAS-BOT-BC383815  Xanthium strumarium John Thomas Howell 1952-10-28 28891 A Tulare Three Rivers 304 Comment
  CAS-BOT-BC383816  Xanthium strumarium John Thomas Howell 1952-10-28 28891 Tulare Three Rivers 304 Comment
  CAS-BOT-BC383817  Xanthium strumarium John Thomas Howell; Gordon H. True 1967-9-18 43772 Tulare Recreation area, north end of Lamont Meadow, Kern Plateau 1706 Comment
  CAS-BOT-BC383818  Xanthium strumarium Ernest C. Twisselmann 1969-10-2 16269 Tulare San Joaquin Valley. Deer Creek, 8.4 miles east of Pixley 121 Comment
  CAS-BOT-BC383819  Xanthium strumarium Ernest C. Twisselmann 1969-10-2 16269 Tulare San Joaquin Valley. Deer Creek, 8.4 miles east of Pixley 121 Comment
  CAS-BOT-BC383826  Xanthium strumarium Henry M. Pollard 1944-9-23 s.n. Ventura Maricopa Road between Fairview Rd. and Matilija Canyon, Ojai Valley Comment
  CAS-BOT-BC383828  Xanthium strumarium S. B. Parish 1916-9-19 11045 Ventura Ventura Comment
  CAS-BOT-BC383832  Xanthium strumarium Henry M. Pollard 1952-7-8 s.n. Ventura Ventura River Basin. Mirror Lake, Ojai Valley Comment
  CAS-BOT-BC383833  Xanthium strumarium Henry M. Pollard 1966-9-22 s.n. Ventura Southern Pacific R.R. east of and near Devil's Gulch, Oak View Comment
  CAS-BOT-BC383835  Xanthium strumarium Roxana Stinchfield 1916-6-25 325 Yolo Near mouth of Buckeye Creek Comment
  CAS-BOT-BC385614  Xanthium strumarium Cherie L. Wetzel 1967-11-3 175 Alameda Niles Canyon and Vicinity; Alameda Creek behind construction yard. Comment
  CAS-BOT-BC385615  Xanthium strumarium Cherie L. Wetzel 1967-10-8 157 Alameda Niles Canyon and Vicinity Comment
  CAS-BOT-BC54218  Xanthium strumarium Bruce Bartholomew 1989-8-11 5060 Modoc Along W side of Goose Lake, 3.5 km S of the Oregon border on National Forest Road 48. 1430 Comment
  CAS-BOT-BC54219  Xanthium strumarium Bruce Bartholomew 1990-8-3 5605 Modoc Ash Creek Wildlife Refuge, ca. 2.5 km S of County Road 87 and 7 km W of Adin. 1250 Comment
  CATA1208  Xanthium strumarium Mark L. Hoefs, Douglas R. Hoefs, Jorge Hernandez 1995-6-15 2264 Los Angeles Santa Catalina Island: Cottonwood Canyon 33 Comment
  CATA308  Xanthium strumarium Mark L. Hoefs 1973-6-5 332 Los Angeles Santa Catalina Island: Lower Cottonwood Canyon, in stream bed by main road, at bridge 22 Comment
  CATA3473  Xanthium strumarium Stuart Olshevski, Benjamin Dion 2017-9-13 009 Los Angeles Santa Catalina Island: Interior; in the main drainage in Middle Springs watershed 83 Comment
  CATA3483  Xanthium strumarium Nathalie Cartan, Benjamin Dion, Michael Thomas 2017-9-28 004 Los Angeles Santa Catalina Island: Interior; in drainage between Lower Cottonwood Road and Banning Meadow Road in the Lower Cottonwood Canyon watershed 153 Comment
  CATA3495  Xanthium strumarium Benjamin J. Dion, Michael Thomas 2017-11-1 047 Los Angeles Santa Catalina Island: Channel side; bottom of main drainage above beach in the Lorenzo Beach watershed 36 Comment
  CDA10203  Xanthium strumarium M. M. Sweet 2007-7-31 444 San Diego City of San Diego; 1/4 mile from the end of the canyon running from Eastgate Mall (starting 1/8 mile east of the intersection of Eastgate and Genesee Avenues) to the end of Roselle Street. (32.8905 N, 117.2205 W) Comment
  CDA12771  Xanthium strumarium G. F. Hrusa 1990-9-4 8211 Sacramento Natoma Unit-Folsom Lake State Rec. Area; about upper end of estuary at S end of American River Bluffs. Comment
  CDA15039  Xanthium strumarium G. F. Hrusa, J. Hart 1998-10-11 14847 Sacramento Sacramento Delta; Georgiana Slough approx. 1/2 km. below divergence from Sacramento R. at Walnut Grove. Comment
  CDA15283  Xanthium strumarium G. F. Hrusa, D. Crowe, R. York 1998-7-17 14721 Contra Costa Sacramento Delta; Parallel to Antioch-Pittsburg Hwy at E end of Dow Chemical property. Comment
  CDA15547  Xanthium strumarium G. F. Hrusa 1998-10-28 14898 Colusa North Coast Ranges; along Cedar Camp Rd. as it enters Little Stony Ck. Cyn., approx. 1/2 mi. from Lodoga/Stonyford Rd. Comment
  CDA17432  Xanthium strumarium G. F. Hrusa, P. Akers 2005-9-28 16755 San Bernardino Mojave Desert; Afton Cyn. Wildlife Refuge, +/- 2 mi. S of I-15. Bed of Mojave River. 426 Comment
  CDA23150  Xanthium strumarium Artie Thomas, Mark A. Elvin 2006-9-23 609235 Orange Southern coastal; San Joaquin Marsh freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, north of University Drive, east Highway 73. Comment
  CDA29789  Xanthium strumarium M. K. Beyers, F. Favela, J. McDonnell 2009-8-29 217 Napa Lake Berryessa: In a moist, but drying arm of Lake Berryessa, off of Berryessa Knoxville Road, extending towards Capell Valley Road (Highway 128). 0 Comment
  CDA29798  Xanthium strumarium M. K. Beyers, F. Favela, J. McDonnell 2009-8-29 217 Napa Lake Berryessa: In a moist, but drying arm of Lake Berryessa, off of Berryessa Knoxville Road, extending towards Capell Valley Road (Highway 128). 0 Comment
  CDA7870  Xanthium strumarium Jon P. Rebman, J. Gregory, K. Rich, P. Famolaro 2007-9-12 13930 San Diego Sweetwater Reservoir, east of National City and south of La Presa; vicinity of wet marsh and meadow areas just northeast and upstream from the east end of the reservoir. Comment
  CDA9008  Xanthium strumarium D. G. Kelch 2007-5-18 7 .325 Yolo Yolo Causeway, 0.4 mi E of Levee Rd. / RR crossing. Comment
  CDA9013  Xanthium strumarium T. C. Fuller 1962-10-16 9763 San Diego In wash of Tia Juana River, south of Highway 101 freeway at Dairy Mart Road, San Yisdro. 0 Comment
  CDA9015  Xanthium strumarium A. G. Murdock, D. G. Kelch 2003-9-12 164 Solano Carquinez Strait Region; Mare Island. West center of island at end of Tennessee. Comment
  CDA9020  Xanthium strumarium M. Tu 1998-8-25 120 Sacramento Collected from west side of small dirt road approximately 50 meters north of the pump station. This road runs adjacent to the west side of the Tall Forest, along Wood Duck Slough. Comment
  CDA9024  Xanthium strumarium T. C. Fuller 1962-10-3 9706 Riverside Palo Verde Valley; South side of 32nd Avenue, 0.6 mile east of Ludy Boulevard, road to Ripley, 3.9 miles north of Palo Verde. 0 Comment
  CDA9032  Xanthium strumarium M. Tu 1998-8-25 120 Sacramento Collected from west side of small dirt road approximately 50 meters north of the pump station. This road runs adjacent to the west side of the Tall Forest, along Wood Duck Slough. Comment
  CHSC100018  Xanthium strumarium Lowell Ahart; John Dittes 2008-8-21 15228 Merced On the banks and bottom of Dutchman Slough, about 220 yards south 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
  CHSC100486  Xanthium strumarium Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15441 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC103013  Xanthium strumarium Lowell Ahart 2009-10-12 16431 Napa Below the high water line of Lake Berryessa, along Capell Creek northeast of Rest Area, 3/4 mile northeast of Highway 128 on Berryessa Knoxville Road, 3/4 mile soutwest of Capell Cove Launch Ramp on Berryessa Knoxville Road, about 19 miles (air) west of Winters. 133 Comment
  CHSC110405  Xanthium strumarium Lowell Ahart 2012-9-28 18467 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC112703  Xanthium strumarium Lowell Ahart 2013-10-19 19130 Glenn Between the river and the large gravel bar, along the west side of the Sacramento River, southwest of the boatlaunch area, west of Butte City. 26 Comment
  CHSC113038  Xanthium strumarium Lowell Ahart 2013-10-1 19095 Colusa Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites. 364 Comment
  CHSC116297  Xanthium strumarium Lowell Ahart 2015-11-7 20613 Butte Strand of Lake Oroville, on east side of old Highway Alternate 40, about 1/4 mile south of end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC21243  Xanthium strumarium M. S. Taylor 1975-10-31 979 Butte Along creek, ca. 50 yds n of Pentz Rd, ca. 12 mi s of Chico, on Butte College campus. 91 Comment
  CHSC25453  Xanthium strumarium Hayes; Warner 1977-9-12 100 Butte In creekbed, w branch of Clear Creek, ca. 10 m n of small wooden walking bridge on Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  CHSC26764  Xanthium strumarium P. Moyer 1971-10-24 47 Butte CSUC Campus. S bank of Chico Ck. behind Archeology 'B' Bldg. 60 Comment
  CHSC31573  Xanthium strumarium L. Ahart 1977-9-20 1575 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC32697  Xanthium strumarium S. Posner 1972-10-12 Butte Upper Bidwell Park, Chico. Vicinity Archery range. Comment
  CHSC34123  Xanthium strumarium L. Ahart 1981-9-10 3141 Sutter Along edge of a wash, on s side of South Butte, Sutter Buttes. 100 Comment
  CHSC34330  Xanthium strumarium L. Ahart 1981-9-6 3094 Plumas On a sandbar along Indian Creek, ca. 1/2 mi sw of the jct of Hwy 89 and Arlington Rd, ca. 1.5 mi sw of Crescent Mills. 1200 Comment
  CHSC37031  Xanthium strumarium L. Ahart 1982-9-9 3773 Sutter On bottom and sides of a wash ca. 1/8 mi s of Myers home, Myers Ranch, Sutter Buttes. 50 Comment
  CHSC38396  Xanthium strumarium Vernon Oswald 1983-8-19 1013 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir on the diversion channel. 79 Comment
  CHSC40588  Xanthium strumarium Pauleen Broyles 1982-7-29 818 Tehama The Nature Conservancy Vina Plains Preserve. In vernal pool. 66 Comment
  CHSC41862  Xanthium strumarium Lowell Ahart 1986-10-16 5408 Butte Below the high water line of Lake Oroville, about 1/10 mile east of the Enterprise Launch Area, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville. 274 Comment
  CHSC43080  Xanthium strumarium L. P. Janeway; C. A. Janeway 1986-6-18 1737 Fresno Canyon of Jacalitos Cr. Along the creek. 274 Comment
  CHSC52386  Xanthium strumarium R. L. Ondricek-Fallscheer 1982-10-24 159 Butte At edge of a spring, ne side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC55356  Xanthium strumarium L. P. Janeway 1987-7-10 2481 A Fresno Creek bed of Warthan Cr, 7 mi west of Coalinga via hwy 198. 320 Comment
  CHSC60724  Xanthium strumarium Vernon H. Oswald 1993-6-9 5498 Glenn Sacramento National Wildlife Refuge. Refuge located ca. 7 mi S of Willows, S of the middle of the S leg of the Tour Route (NE1/4 of Tract 18). On the bottom of a vernal pool. 25 Comment
  CHSC6083  Xanthium strumarium J. Wheeler 1968-5-20 212 Butte 1 mi e of Sacramento River on hwy. 32. Comment
  CHSC6137  Xanthium strumarium J. Wheeler 1968-5-21 397 Butte Bank of Kusal Slough ca. 1.5 mi e of Sacramento River on hwy. 32. Comment
  CHSC66432  Xanthium strumarium Vernon H. Oswald; Lowell Ahart 1996-6-10 7746 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC76412  Xanthium strumarium Lowell Ahart 1999-10-28 8313 Butte On the west side of a large pond, area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC78063  Xanthium strumarium Shelly Pirtle 1997-4-9 28 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Cry Creek. Comment
  CHSC89459  Xanthium strumarium Lowell Ahart 2004-10-14 11461 Lake Below the high water line of Indian Valley Reservoir, east of the causeway, in the northwest part of the reservoir, on the east side of Bartlett Springs Road (Road M 12). 446 Comment
  CHSC89460  Xanthium strumarium T. C. Fuller 1965-9-14 14103 Sutter On w. bank of Sutter Bypass, 6 mi. s.e. of Robbins. Comment
  CHSC93677  Xanthium strumarium Lowell Ahart; John Dittes 2005-6-2 11964 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC94593  Xanthium strumarium Lowell Ahart 2006-9-11 13278 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC97758  Xanthium strumarium Lowell Ahart 2007-11-8 14581 Yuba On the strand of Camp Far West Reservoir, about 1/2 mile south of Rock Creek, about 1/8 mile north of Bear River, about 6 miles (air) northeast of Sheridan. 73 Comment
  CHSC97771  Xanthium strumarium Lowell Ahart 2007-11-1 14533 Yuba On the south side of Willow Creek, above the high water line of Bullards Bar Reservoir, about 1 mile northwest of Old Camptonville Road, about 1 1/2 miles (air) west of Camptonville. 627 Comment
  GMDRC3533  Xanthium strumarium J. Andre 2009-6-27 10775 San Bernardino New York Mountains: New York Mountains: Mojave National Preserve, east side of NY Mtns at Lecyr Well, approx 0.6 mi. E of mouth of Keystone Canyon, 0.2 mi. W. of Ivanpah Road. USGS 7.5 min. Quad: Castle Peaks 35 deg. 16.762' N 115 deg. 15.182' W. Elev. 4925 ft. 1502 Comment
  HSC27801  Xanthium strumarium J. P. Smith 1973-9-29 7338 Trinity Bank of the Trinity River near Hawkins Bar. 213 Comment
  HSC6337  Xanthium strumarium M. T. Milligan 1964-9-13 260 Trinity 1 mi. E of Cedar Flat on Hwy. 299, along Trinity River. 457 Comment
  HSC6342  Xanthium strumarium W. H. Kinch 1954-10-26 10 San Bernardino S of Chino, near California Inst. for Men. 183 Comment
  HSC68352  Xanthium strumarium J. P. Smith, Steve Selva 1970-7-17 4421 Siskiyou Along Klamath River. Comment
  HSC79043  Xanthium strumarium G. K. Helmkamp 1983-10-8 - 10 San Bernardino Big Morongo Preserve of The Nature Conservancy, Morongo Valley, near the house in the San Bernardino Co. owned area. 762 Comment
  HSC81333  Xanthium strumarium D. A. Hoover 1985-9-4 695 San Bernardino S of Morongo Valley, at the lower end of the mesquite trail. 747 Comment
  HSC93473  Xanthium strumarium Gordon Leppig 1998-9-7 1098 Trinity Six Rivers National Forest, South Fork Trinity River, W bank. 213 Comment
  HSC95399  Xanthium strumarium A. C. Sanders, Mark A. Elvin 2002-8-28 25599 Los Angeles Newhall Ranch, within 10 m of fence marking west edge of Magic Mtn. amusement park. 360 Comment
  IRVC27444  Xanthium strumarium A. C. Sanders, Mark A. Elvin 2002-8-28 25599 Los Angeles Newhall Ranch, within 10 m of fence marking west edge of Magic Mtn. amusement park NE end of Santa Susana Mtns. 360 Comment
  IRVC27490  Xanthium strumarium Mark A. Elvin, H. Spillman, et al. 2005-4-2 4131 San Diego E side of Otay Mtn; Marron Creek along Marron Valley Road; 2.1km (air) N of Mexico; near gate to City of San diego Preserve. Peninsular Ranges, San Ysidro Mountains 274 Comment
  IRVC29823  Xanthium strumarium Artie Thomas, Mark A. Elvin 2006-9-23 609235 Orange San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; SW edge, along San Diego Creek, N of University Drive, E Hwy 73. Southern Coastal 2 Comment
  JEPS100067  Xanthium strumarium A. Langston 2003-7-28 AL 77 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS106008  Xanthium strumarium Lowell Ahart 2004-10-14 11461 Lake Below the high water line of Indian Valley Reservoir, east of the causeway, in the northwest part of the reservoir, on the east side of Bartlett Springs Road (Road M 12) 446 Comment
  JEPS106870  Xanthium strumarium Jake Ruygt 1978-9-15 415 Napa Napa River at east end of Marina Drive, Napa 4 Comment
  JEPS108957  Xanthium strumarium Lowell Ahart 2006-9-11 13278 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS111646  Xanthium strumarium A. G. Murdock 2003-9-12 164 Solano Mare Island West center of island at end of Tennessee 2 Comment
  JEPS114541  Xanthium strumarium Lowell Ahart, John Dittes 2008-8-21 15228 Merced On the banks and bottom of Dutchman Slough, about 220 yards south 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
  JEPS115016  Xanthium strumarium Lowell Ahart 2007-11-8 14581 Yuba On the strand of Camp Far West Reservoir, about 1/2 mile south of Rock Creek, about 1/8 mile north of Bear River, about 6 miles (air) northeast of Sheridan 73 Comment
  JEPS115029  Xanthium strumarium Lowell Ahart 2007-11-1 14533 Yuba On the south side of Willow Creek, above the high water line of Bullards Bar Reservoir, about 1 mile northwest of Old Camptonville Road, about 1 1/2 miles (air) west of Camptonville 627 Comment
  JEPS115766  Xanthium strumarium Lowell Ahart 2009-10-12 16431 Napa Below the high water line of Lake Berryessa, along Capell Creek northeast of Rest Area, 3/4 mile northeast of Highway 128 on Berryessa Knoxville Road, 3/4 mile soutwest of Capell Cove Launch Ramp on Berryessa Knoxville Road, about 19 miles (air) west of W 133 Comment
  JEPS119937  Xanthium strumarium Lowell Ahart 2012-9-28 18467 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS120736  Xanthium strumarium Lowell Ahart 2013-10-19 19130 Glenn Between the river and the large gravel bar, along the west of the Sacramento river, southwest of the boat launch area, west of Butte City. Comment
  JEPS124160  Xanthium strumarium Lowell Ahart 2015-11-7 20613 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS18086  Xanthium strumarium Roxana S. Ferris 1956-9-15 13065 San Diego road crossing of Jamul Creek a little above eastern arm Lower Otay Reservoir; , Jamul Creek Comment
  JEPS20072  Xanthium strumarium Peter H. Raven with R. Snow 1957-7-27 11140 San Diego strand Lake Henshaw Comment
  JEPS20073  Xanthium strumarium Peter H. Raven 1957-9-21 11317 Los Angeles small hill at nw end UCLA campus; Los Angeles Comment
  JEPS24492  Xanthium strumarium J. H. Thomas 1960-8-30 8858 Glenn in hwy ditch about 3 mi n Glenn Comment
  JEPS26175  Xanthium strumarium Peter H. Raven and Henry J. Thompson 1959-9-20 14495 Ventura Carlisle Road 1.2 mi e Decker Road; Santa Monica Mountains 335 Comment
  JEPS26195  Xanthium strumarium Peter H. Raven and Henry J. Thompson 1959-10-4 14591 A Ventura 1 mi n Camarillo State Hospital; Santa Monica Mountains, Calleguas Creek 18 Comment
  JEPS30678  Xanthium strumarium Peter H. Raven 1961-9-17 16702 San Bernardino below Cajon Station (streamside); Cajon Canyon, Cajon Campground 792 Comment
  JEPS37535  Xanthium strumarium W. L. Jepson 1921-9-12 9482 Sonoma s side Alexander Valley; s side Alexander Valley 45 Comment
  JEPS37536  Xanthium strumarium W. L. Jepson 1928-4-20 12455 San Diego sandy wash San Felipe Creek; San Felipe Valley, wash of San Felipe Creek 746 Comment
  JEPS37537  Xanthium strumarium Lincoln Constance 1934-6-12 865 Humboldt n bank South Fork Eel River (Dyerville, Bull Creek Road, Bull Creek Region); n bank South Fork Eel River, Bull Creek Region, Dyerville Comment
  JEPS37538  Xanthium strumarium L. M. Booth 1932-6-29 1231 Orange Newport Bay Comment
  JEPS37541  Xanthium strumarium W. L. Jepson 1923-10-4 10213 Contra Costa Sherman Island ferry Antioch Shore, Sherman Island ferry Comment
  JEPS37542  Xanthium strumarium Elizabeth Day Palmer 1908-7-17 Los Angeles Los Angeles Comment
  JEPS41257  Xanthium strumarium R. F. Hoover 1934-9-15 11 Stanislaus Modesto Comment
  JEPS41258  Xanthium strumarium R. F. Hoover 1938-9-3 3803 Lake on Middletown-Lower Lake road Putah Creek Comment
  JEPS41260  Xanthium strumarium Geo. D. Butler 1908-9-5 527 Siskiyou along creek at Butler's Ranch (near Yreka) Comment
  JEPS41261  Xanthium strumarium W. L. Jepson 1929-4-30 15270 Solano about 1 mi ne Fairfield (between Suisun and Cement) Comment
  JEPS41263  Xanthium strumarium W. C. Mathews 1914-1 Mendocino Fort Bragg Comment
  JEPS41264  Xanthium strumarium S. B. Parish 1912-10-21 8359 Imperial Ft. Yuma , Ft. Yuma (Colorado River bottoms) Comment
  JEPS41265  Xanthium strumarium W. L. Jepson with Prof. and Mrs. Wiegand 1921-9-9 9440 Mendocino Hopland Comment
  JEPS41267  Xanthium strumarium W. L. Jepson 1914-10-14 6211 Santa Clara Coyote 17 Comment
  JEPS45173  Xanthium strumarium Perry Allen 1961-8-22 Stanislaus beside Tuolumne River at Basso Bridge (vicinity of La Grange); Tuolumne River Comment
  JEPS64722  Xanthium strumarium Ernest C. Twisselmann 1970-10-9 17521 Fresno Warthan Creek at the Parkfield Road; Warthan Creek 594 Comment
  JEPS74334  Xanthium strumarium L. R. Heckard with T. I. Chuang and R. Bacigalupi 1974-7-23 3754 Siskiyou about 4 air mi n Yreka (Shasta River bridge, along sandy margin of river); Shasta River Comment
  JEPS77902  Xanthium strumarium Edward Lee 1934-7-4 947 San Joaquin Holt Comment
  JEPS77903  Xanthium strumarium Edward Lee 1934-7-4 947 San Joaquin Holt Comment
  JEPS84522  Xanthium strumarium Mr. Benj. Cobb 1982-9-30 Alameda Anthony Chabot Regional Park Anthony Chabot Regional Park (along Contra Costa Trails) Comment
  JOTR37034  Xanthium strumarium Hodges, Stephen R, James Heintz, Aliya Ingersoll, Evan Heck 2015-10-22 523 San Bernardino Wonderland of Rocks - Stop 2 Comment
  JROH1319  Xanthium strumarium John H. Thomas 1976-10-16 18425 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  LA200327  Xanthium strumarium Jonathan Sauer; D. Bradbury, A. Lang 1969-9-25 4632 Ventura SANTA MONICA MOUNTAINS, Big Sycamore Canyon, near mouth of canyon, near Point Mugu. 12 Comment
  LA201372  Xanthium strumarium Arthur C. Gibson; 2001-7-25 4140 Ventura Comment
  LA31639  Xanthium strumarium Peter H. Raven; Henry J. Thompson 1959-10-4 14591 A Ventura Santa Monica Mountains, Calleguas Creek, 1 mi N of Camarillo State Hospital 18 Comment
  LA31640  Xanthium strumarium Peter H. Raven; Henry J. Thompson 1959-9-20 14495 Ventura Santa Monica Mountains, Carlisle Road 1.2 mi. E of Decker Road Comment
  LA31641  Xanthium strumarium Peter H. Raven; Henry J. Thompson 1959-9-6 14399 Los Angeles Santa Monica Mountains, Malibu Creek, near mouth 14 Comment
  LA35901  Xanthium strumarium Peter H. Raven; Henry J. Thompson 1960-4-12 15050 Ventura SANTA MONICA MOUNTAINS, Triunfo Pass 640 Comment
  OBI15332  Xanthium strumarium Jim Heaston 1955-10-7 s.n. San Luis Obispo Cal Poly SLO Comment
  OBI15333  Xanthium strumarium Robert F. Hoover 1966-9-16 10029 San Luis Obispo Santa Margarita Crk 2 mi N of Santa Margarita Comment
  OBI22944  Xanthium strumarium David J. Keil 1979-10-27 13659 San Luis Obispo E end of Lopez Lake below confluence of Arroyo Grande Crk and Phoenix crk, 0.2 mi from jctn of Lopez Cyn Rd and Pozo Rd Comment
  OBI30686  Xanthium strumarium Julie M. Vanderwier 1980-11-10 s.n. San Luis Obispo Indian Knob Tar Sands Comment
  OBI38424  Xanthium strumarium Eric Wise 1981-7-26 933 San Luis Obispo Shepperd's Reservoir, Cal Poly Comment
  OBI51187  Xanthium strumarium Jan Barber 1993-8-5 60 San Luis Obispo San Simeon State park; along banks of San Simeon crk Comment
  OBI51316  Xanthium strumarium Jan Barber 1993-8-14 81 San Luis Obispo San Simeon State park, near seasonal outlet to ocean of San Simeon Crk Comment
  OBI56722  Xanthium strumarium Matt Falconer 1993-6-8 s.n. Santa Barbara Vandenberg AFB; W and S of 13th Street Bridge over the Santa Ynez River Comment
  OBI6388  Xanthium strumarium Robert J. Rodin 1959-7-10 6383 Santa Barbara Santa Ynez River at Buellton Comment
  OBI65975  Xanthium strumarium Wendy Thackery, Stacey Smith and Paul Corsi 2003-8-22 57 San Luis Obispo Central Coast Comprehensive Wetlands GIS (CCCWGIS). S of Morro Bay on Hwy 1. N of Hollister peak off Canet Rd S of hwy 1. Outlet into Choro Crk 31 Comment
  OBI67223  Xanthium strumarium David J. Keil 1991-10-26 22693 Santa Barbara Vandenberg Air Force base, North base. barka slough, near eastern boundary of base along san antonio creek. areas of freshwater marsh, riparian woodland, and salt-marsh meadow. Comment
  OBI79136  Xanthium strumarium David J. Keil 2013-8-22 31963 San Luis Obispo Morro Bay State Park. Vicinity of road junction of State Park Road with South Bay Blvd. and bridge over Chorro and Morro Creeks 8 Comment
  OBI79233  Xanthium strumarium David J. Keil, with CNPS field trip 2012-4-7 31247 San Luis Obispo Shell Creek Road north of Highway 58 405 Comment
  OBI82503  Xanthium strumarium David J. Keil 2015-7-8 33295 San Luis Obispo Atascadero. Southeast of intersection of El Camino Real and San Rafael Road 280 Comment
  POM12002  Xanthium strumarium Mary F. Spencer 1919-10-3 1386 San Diego Mesa Grande 1021 Comment
  POM12448  Xanthium strumarium P. A. Munz 1922-9-2 ? 345 Orange Laguna Lakes 30 Comment
  POM153381  Xanthium strumarium P. A. Munz, I. M. Johnston 1928-9-12 11263 Riverside Santa Ana River, Onatrio-to-Corona road. Comment
  POM153387  Xanthium strumarium P. A. Munz, I. M. Johnston 1928-9-12 11257 Riverside Temescal Canyon, Lee's Lake. Comment
  POM153400  Xanthium strumarium P. A. Munz, I. M. Johnston 1928-9-12 11299 Riverside 3 miles north of Temecula. Warm Springs Creek Comment
  POM201747  Xanthium strumarium L. M. Booth 1932-6-29 1231 Orange Newport Bay. Comment
  POM224745  Xanthium strumarium P. A. Munz 1935-10-21 14656 San Bernardino Rincon Comment
  POM266303  Xanthium strumarium J. C. Roos 1940-8-20 1590 San Bernardino Loma Linda. 323 Comment
  POM289965  Xanthium strumarium Arthur L. Cohen 1934-7-11 764 San Diego San Diego Bay mudflats. 0 Comment
  POM289966  Xanthium strumarium Lyman Benson 1928-9-21 813 Lake Rincon School, Kelseyville. Middle N Coast mtn range, Clear Lake watershed. 488 Comment
  POM289973  Xanthium strumarium Lyman Benson 1932-10-16 4083 Kern Bakersfield. Kern River Watershed. 122 Comment
  POM324261  Xanthium strumarium Keith C. Hughes 1960-10-3 228 Los Angeles San Antonio Canyon. Mt. Range San Gabriel. 762 Comment
  POM4804  Xanthium strumarium D. L. Crawford 1916-7-26 s.n. Orange Laguna Canyon Comment
  POM48281  Xanthium strumarium I. M. Johnston 1924-7-10 s.n. Orange Laguna canyon Comment
  POM48502  Xanthium strumarium P. A. Munz 1924-7-29 8897 San Bernardino Loma Linda. Comment
  POM57127  Xanthium strumarium C. F. Baker 1902-10-15 1760 Santa Clara Near Stanford University Comment
  POM57128  Xanthium strumarium Edward L. Greene 1902-8-30 1512 Santa Clara Palo Alto Comment
  POM87800  Xanthium strumarium L. R. Abrams 1903-9-27 4023 Monterey Salinas River - Neponset. Comment
  RSA0039621  Xanthium strumarium Jon P. Rebman, W. Schmidtmann, G. Kenney 2014-4-30 28123 San Diego Camp Pendleton: State Park Lease area: northwestern portion of Base; west of the intersection of Cristianitos Road & Talega Road; along Cristianitos Creek. 53 Comment
  RSA0057923  Xanthium strumarium Richard G. Swinney 2010-6-23 13340 Los Angeles San Gabriel Mountains/Verdugo Mountains: Hansen Dam Flood Control Basin, along Big Tujunga Wash, SW of Orcas Park, Lake View Terrace. 335 Comment
  RSA0058921  Xanthium strumarium LeRoy Gross, Joy England, Naomi S. Fraga 2015-5-6 7360 Ventura USC/Best Property; Off Pyle Road, south of Highway 126. Almost halfway between Santa Paula and Fillmore. 99 Comment
  RSA0064006  Xanthium strumarium LeRoy Gross, Joy England 2015-4-29 7218 Ventura Bunn-Birrell Property; Survey the river bed at junction of S. Mountain Road and Converse Road. Southwest area of Santa Paula. 57 Comment
  RSA0064093  Xanthium strumarium LeRoy Gross, Loraine Washburn 2015-4-30 7321 Ventura Vulcan Property; End of Torrey Road/Main street, south of Highway 126, and Piru. Surveyed up stream. 193 Comment
  RSA0069600  Xanthium strumarium LeRoy Gross, Sarah DeGroot, Cheryl Sevilla 2015-4-9 7066 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
  RSA0070297  Xanthium strumarium Nick Jensen, Tommy Stoughton, Evan Meyer, Manuel Lujan 2013-9-13 603 Kern Tejon Ranch. Lower Pescado Creek about 1.25 road km to the north of the junction with Contour Rd. 1076 Comment
  RSA0077235  Xanthium strumarium Nick Jensen, Neal Kramer 2014-9-7 2474 Kern Tejon Ranch. Tejon Hills, Comanche Point. In and immediately around Comanche Spring. 194 Comment
  RSA0082817  Xanthium strumarium Sarah J. De Groot, Noravit Chumchim 2015-7-2 7422 Ventura The Nature Conservancy Loughman Property. Santa Clara River floodplain just east of Santa Paula, off south end of Hallock Drive. North of South Mountain, south of Sulphur Mountain/Santa Paula Ridge, south of Highway 126,, southwest of Fillmore. Oak Ridge Fault zone. 75 Comment
  RSA0084861  Xanthium strumarium R. G. Swinney 2010-9-1 13671 Los Angeles Big Tujunga Creek, under the overpass of the I-210 Fwy. and on either side, south of W. Tujunga Valley St. 338 Comment
  RSA116660  Xanthium strumarium I. L. Wiggins 1928-8-20 3322 Santa Clara Dry bed of Lagunita, Stanford University Campus 0 Comment
  RSA116661  Xanthium strumarium W. R. Dudley 1893-07 s.n. Santa Clara Santa Cruz Mountain Peninsula, Stanford University. Comment
  RSA133858  Xanthium strumarium John H. Thomas 1954-7-9 4356 Santa Clara Carnadero Creek at intersection of Thomas Road, about 1 mile south of Gilroy. 61 Comment
  RSA133870  Xanthium strumarium John H. Thomas 1955-7-9 5229 Santa Clara Dry bed of Lake Lagunita, Stanford University. 30 Comment
  RSA151142  Xanthium strumarium P. H. Raven 1961-9-17 16702 San Bernardino Cajon Canyon below Cajon Station, at Cajon Campground 793 Comment
  RSA177006  Xanthium strumarium John H. Thomas 1964-11-29 10536 San Mateo Jasper Ridge Biological Experimantal Area, about 5 miles SW of Palo Alto; W end of Searsville Dam Comment
  RSA180446  Xanthium strumarium E. W. Lathrop 6016 San Bernardino Loma Linda Comment
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Apr 28 2011
  RSA184090  Xanthium strumarium I. L. Wiggins 1965-10-24 20283 Orange Roadside along Skyline Drive near intersection with Raymond Street, Fullerton. Comment
  RSA188366  Xanthium strumarium R. F. Thorne, Percy C. Everett 1965-6-23 34942 Los Angeles Santa Catalina Island. Ben Weston Beach, W side of island. Comment
  RSA250066  Xanthium strumarium R. F. Thorne, Larry E. DeBuhr, et al. 1972-10-13 42447 San Bernardino due S of Lost Lake and near Blue Cut. 807 Comment
  RSA286650  Xanthium strumarium R. D. Stone, Greg de Nevers, S. Castagnoli 1980-9-12 295 c San Bernardino Horse Thief Springs 1415 Comment
  RSA289814  Xanthium strumarium B. A. Prigge 1980-9-16 4046 Riverside Indio. Coachella Valley Stormwater Channel. 0 Comment
  RSA296139  Xanthium strumarium B. A. Prigge 1980-8-5 3882 Riverside Whitewater canyon: 1.1 miles N of Interstate 10. 473 Comment
  RSA314470  Xanthium strumarium R. F. Thorne, Kay Wright, R. K. Benjamin 1982-10-8 55372 Riverside Mouth of Whitewater Canyon near Whitewater Post Office in sandy wash between old and new highway bridges and along Whitewater River. 412 Comment
  RSA33608  Xanthium strumarium N. Cooper 1943-9-10 894 Riverside Banning 640 Comment
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May 13 2011
  RSA38194  Xanthium strumarium P. A. Munz 1946-10-2 11556 Orange Santa Ana River Canyon, Rancho Santa Ana 122 Comment
  RSA441184  Xanthium strumarium N. C. Cooper 1949-5-18 3803 Inyo Death Valley National Monument, Scotty's Canyon 914 Comment
  RSA441185  Xanthium strumarium Freda Detmers 1933-8-26 17931 Inyo Lone Pine. Just west of Mt. View Cabins. Comment
  RSA441186  Xanthium strumarium Wm. Martin 1971-9-8 20051 Inyo 5 miles NW of Bishop on Hwy 395. Comment
  RSA441187  Xanthium strumarium B. C. Templeton 1936-9-27 5250 Kern Walker Pass on St Hwy 178 1601 Comment
  RSA441188  Xanthium strumarium F. R. Fosberg 1930-7-3 S 3083 Los Angeles Lexington Wash, San Gabriel River, El Monte. 80 Comment
  RSA441191  Xanthium strumarium F. R. Fosberg 1931-5-18 S 4897 Los Angeles Santa Catalina Island, Little Harbor. Comment
  RSA441192  Xanthium strumarium M. B. Dunkle 1930-7-23 2437 Los Angeles Little Harbor, Santa Catalina Island. Comment
  RSA441193  Xanthium strumarium Anonymous 1937-9-9 280 San Bernardino Orange grove, Redlands. Comment
  RSA441194  Xanthium strumarium F. R. Fosberg 1930-10-26 S 4164 San Diego Coches Creek, 2 miles east Bostonia. 200 Comment
  RSA441195  Xanthium strumarium F. R. Fosberg 1930-10-26 S 4164 San Diego Coches Creek, 2 miles east Bostonia. 200 Comment
  RSA441196  Xanthium strumarium Malcolm M. Rice 1924-8-6 s.n. Santa Barbara Near Oak Park Comment
  RSA512372  Xanthium strumarium Steven A. Junak 1988-9-1 SN- 267 Ventura San Nicolas Island. Barge landing area at Daytona Beach. 6 Comment
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May 1 2015
  RSA544325  Xanthium strumarium Steve Boyd 1991-9-8 6433 Riverside Peninsular Range Aguanga Valley, sandy wash of Temecula Creek, south of Hwy 79 at jct with Hwy 371. 600 Comment
  RSA557360  Xanthium strumarium Julie Greene 1993-6-11 1350 Riverside [No locality information provided] 440 Comment
  RSA561515  Xanthium strumarium Steve Boyd, Timothy S. Ross, D. E. Bramlet 1992-9-9 7658 Riverside Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Upper San Mateo Canyon, from the junction of Tenaja Road (7S01) and Los Almos Road (7S04) and the confluence of Los Almos Creek, up the San Mateo Trail north to Potrero de la Cienega. 396 Comment
  RSA588682  Xanthium strumarium Orlando Mistretta 1995-7-12 1896 Los Angeles San Gabriel Mountains: Little Rock Creek, just N of Guard Station along Little Rock Creek, below the dam. 976 Comment
  RSA593421  Xanthium strumarium Steve Boyd, Valerie Soza, Victoria Jotikasthira, Lauren Raz 1996-7-11 8899 Los Angeles Liebre Mountains, Castaic Creek drainage from Fish Canyon downstream to powerplant, just north of upper end of Castaic Lake. 470 Comment
  RSA594344  Xanthium strumarium Steve Boyd, Lauren Raz 1996-10-14 9029 Los Angeles Liebre Mountains region, Agua Dulce Canyon, just north of Highway 14 and the confluence with Escondido Canyon, along Agua Dulce Canyon Road. 671 Comment
  RSA594583  Xanthium strumarium L. C. Wheeler 1966-9-21 8887 Los Angeles East fork San Gabriel Canyon at Burro Canyon. 457 Comment
  RSA596464  Xanthium strumarium Lauren Raz, S. D. Boyd 1996-10-23 001 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
  RSA599920  Xanthium strumarium E. R. Blakley 1958-10-12 B- 2532 Santa Barbara Santa Cruz Island. 1.5 mi. east of Stanton Ranch Hdq. near a field named El Sobrante 137 Comment
  RSA601154  Xanthium strumarium L. C. Wheeler 1966-9-6 8866 Los Angeles San Gabriel Mountains, Angeles National Forest: Little Rock Reservoir Comment
  RSA619864  Xanthium strumarium D. L. Banks 1997-6-16 2130 San Diego NW Palomar Mountains, Agua Tibia Mountains: Pala Indian Reservation. North of the San Luis Rey River, along Pala Creek, south of Pala Mission Rd. 113 Comment
  RSA666106  Xanthium strumarium Fred M. Roberts, Michelle Lee 2001-6-18 5495 Orange Rancho Mission Viejo: Chiquita Ridge, 0.3km WNW Median Rancho Survey Marker. PCR Vernal Pool 4. 226 Comment
  RSA678030  Xanthium strumarium Sarah J. De Groot 2002-9-29 806 San Diego Hidden Meadows 92026. Mtn Meadow rd. & Meadow Glen wy E. Comment
  RSA692070  Xanthium strumarium A. C. Sanders, Mark Elvin 2002-8-28 25599 Los Angeles NE end of Santa Susana Mts.: Newhall Ranch, within 10 m of fence marking west edge of Magic Mtn. amusment park 360 Comment
  RSA699679  Xanthium strumarium Keith E. Hoffmaster 1926-12-18 s.n. Orange Santa Ana Comment
  RSA703093  Xanthium strumarium Fred M. Roberts, Art Davenport 2003-9-11 6003 Orange Rancho Mission Viejo: Donna O'Neill Land Conservancy. Cristianitos Cyn., 0.79 km N Sycamore Gate 0.23 km w of Crisianitos Road. 126 Comment
  RSA703628  Xanthium strumarium Scott D. White, Angelia Carey 2004-9-16 10766 Riverside San Jacinto Mountain foothills: San Jacinto River wash and adjacent alluv. benches, near Indian Creek confluence. 503 Comment
  RSA708732  Xanthium strumarium Fred M. Roberts, Robert L. Allen, Chris M. Barnhill 2004-8-21 6116 Orange Santa Ana Mountains; Casper Wilderness Park, San Juan Cyn., Old San Juan Hot Springs, ca. 0.4 km SW San Juan Ranger Station, N of SR 74. 214 Comment
  RSA709001  Xanthium strumarium L. M. Moe 2004-5-30 2599 Kern Tule Elk State Reserve. Large colony along west bank of outlet canal near the Adobe. 88 Comment
  RSA714338  Xanthium strumarium J. P. Rebman, Jeannie Gregory, M. Mulligan, J. Barth 2005-8-13 12229 San Diego San Vicente Reservoir: North of Lakeside, east of Hwy 67, northeast of intersection between Moreno Ave. and Vigilante Road; west side of reservoir in the first cove north of the boat landing. 195 Comment
  RSA715403  Xanthium strumarium Sarah J. De Groot, Aydee Virgen, Charles Land 2004-6-26 4368 San Bernardino Whipple Mountains: Along Rio Vista Dr. near Rahun Trail. Colorado River Indian Reservation (permit 5 Feb. 2004), material not to be propagated. 98 Comment
  RSA715416  Xanthium strumarium Sarah J. De Groot, Aydee Virgen, Charles Land 2004-6-26 4384 San Bernardino WHIPPLE MOUNTAINS: Along levee road S/SW of Big River. Colorado River Indian Reservation (permit 5 Feb. 2004), material not to be propagated. 96 Comment
  RSA715417  Xanthium strumarium Sarah J. De Groot, Aydee Virgen, Charles Land 2004-6-26 4384 San Bernardino WHIPPLE MOUNTAINS: Along levee road S/SW of Big River. Colorado River Indian Reservation (permit 5 Feb. 2004), material not to be propagated. 96 Comment
  RSA724816  Xanthium strumarium L. Ahart 2006-9-11 13278 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  RSA730191  Xanthium strumarium Naomi Fraga, Daniel Brock 2004-10-31 1339 Kern The Owens Peak Eastern Watershed: Indian Wells Canyon. 1098 Comment
  RSA735544  Xanthium strumarium A. C. Sanders, Fred M. Roberts 2008-6-17 35483 Orange Lomas de Santiago, East Loma Ridge Spur Road c. 600 m NW of Hicks Cyn. Haul Rd. 408 Comment
  RSA747206  Xanthium strumarium K. M. Meyer, A. Townesmith 2007-9-24 250 Santa Clara Henry W. Coe State Park, SW corner of park, Hunting Hollow entrance and parking area. 253 Comment
  RSA750344  Xanthium strumarium P. DeVries 2009-7-1 7555 Kern Western Transverse Range; San Emigdio Mtns. Region; Bitter Creek National Wildlife Refuge; ca. 5.0 air miles E of the junction of Cerro Noroeste and Highway 166. 689 Comment
  RSA763514  Xanthium strumarium R. G. Swinney 2008-11-30 9874 Los Angeles San Gabriel Mtns.: Azusa, San Gabriel River Channel, 1.2 mi. north of Foothill Blvd. at mouth of Fish Canyon. 204 Comment
  RSA763829  Xanthium strumarium Doris Bowers 1974-5-4 2243 Imperial Coyote Creek, Anza-Borrego State Park 335 Comment
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Sep 11 2013
  RSA771480  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15578 Butte Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258deg.) of Honcut, 7.2 mi. SE (114deg.) of Gridley 35 Comment
  SBBG101659  Xanthium strumarium S. A. Junak 1990-8-21 SN 521 Ventura Barge Landing area Daytona Beach 7 Comment
  SBBG103957  Xanthium strumarium D. Swinney 1991-10-6 1624 San Bernardino Cajon Cyn, near stream ca. 0.5 mi S of N end of old US Hwy 395 880 Comment
  SBBG108671  Xanthium strumarium N. Meng 1966-10-30 353 Kern E side N Fork Lake Isabella, near Camp Area 9 Comment
  SBBG111174  Xanthium strumarium E. Neese, E. Painter 1994-7-19 HL 790 Monterey San Antonio River, near Nacimiento-Fergusson Rd bridge, ca. 1.3 km NNW of Oro Fino Cyn; Ft Hunter Liggett 300 Comment
  SBBG116075  Xanthium strumarium R. Burgess, P. Munro 2000-10-6 4256 Ventura S end of Lake Eleanor, W side of Decker Rd (St Hwy 23); Thousand Oaks 304 Comment
  SBBG117739  Xanthium strumarium M. Wetherwax, E. Painter 2002-9-4 CR 366 San Luis Obispo Sulphur Springs Rd, near pipeline crossing; Camp Roberts 251 Comment
  SBBG117749  Xanthium strumarium E. Painter, M. Wetherwax 1999-11-15 SLO 28 San Luis Obispo main channel of Chorro Crk for ca. 0.5 km, above confluence of main channel and branch; Camp San Luis Obispo 100 Comment
  SBBG121077  Xanthium strumarium R. Burgess, P. Munro 2001-9-23 4989 Ventura drying pond NW of upper Rose Lake, Rose Valley 1021 Comment
  SBBG128113  Xanthium strumarium M. L. Hoefs, D. R. Hoefs, J. Hernandez 1995-6-15 2264 Los Angeles Cottonwood Cyn 33 Comment
  SBBG131853  Xanthium strumarium S. J. DeGroot, N. Chumchim 2015-7-2 7422 Ventura Santa Clara River floodplain just E of Santa Paula, off S end of Hallock Drive, S of Sulphur Mtn/Santa Paula Ridge; Nature Conservancy Loughman Property 75 Comment
  SBBG14595  Xanthium strumarium E. C. Twisselmann 1962-10-5 7907 San Luis Obispo Grant Lake 594 Comment
  SBBG27809  Xanthium strumarium H. M. Pollard 1967-8-30 Santa Barbara sandspit, breakwater; Santa Barbara Comment
  SBBG29226  Xanthium strumarium M. L. Long 1947-11-23 Santa Barbara 0.5 mi E of Arroyo Burro Beach [Hendry Beach] Comment
  SBBG31206  Xanthium strumarium R. F. Thorne 1966-9-14 36668 Los Angeles Little Harbor 3 Comment
  SBBG36161  Xanthium strumarium M. R. Benedict 1968-9-26 Santa Barbara estuary, Christi Harbor 1 Comment
  SBBG36462  Xanthium strumarium C. F. Smith 1949-9-15 2452 Santa Barbara Hope Ranch Comment
  SBBG36563  Xanthium strumarium C. F. Smith 1948-9-7 2278 Santa Barbara William's Way, Mission Cyn Heights Comment
  SBBG38992  Xanthium strumarium H. M. Pollard 1966-9-22 Ventura Southern Pacific Railroad, E of and near Devil's Gulch; Oak View Comment
  SBBG39846  Xanthium strumarium E. R. Blakley, E. K. Balls 1958-10-12 2532 Santa Barbara 1.5 mi E Stanton Ranch headquarters, near a field named El Sobrante 137 Comment
  SBBG40204  Xanthium strumarium H. M. Pollard 1958-11-25 Santa Barbara above ocean, Summerland Comment
  SBBG4328  Xanthium strumarium S. A. Junak 1998-9-24 SR 899 Santa Barbara just inland from mouth of Bee Cyn 1 Comment
  SBBG47755  Xanthium strumarium P. A. Meyers 1973-9-3 DM- 1081 Ventura ca. 1 mi W of Port Hueneme Naval Base and 0.25 to 0.5 mi inland from beach 3 Comment
  SBBG48094  Xanthium strumarium L. S. Matlovsky -Jan-1974 DM 5931 -51 Santa Barbara mouth of Bell Cyn, between Southern Pacific Railroad and ocean, just W of Sandpiper Golf Course, near Ellwood Comment
  SBBG52609  Xanthium strumarium R. Zembal 1977-6-4 Ventura just S of P. W. Storage Yard; Pacific Missile Test Center Comment
  SBBG61638  Xanthium strumarium R. Hoffmann 1927-8-2 Santa Barbara near beach; Santa Barbara Comment
  SBBG81111  Xanthium strumarium S. Cantrell, W. Appleby 1985-9-19 Riverside Santa Ana River Regional Park, Riverside, S side of river 207 Comment
  SBBG86410  Xanthium strumarium C. F. Smith 1943-10-1 152 Santa Barbara N end of Cheltenham Rd, above Tunnel Rd, Mission Cyn 213 Comment
  SBBG86417  Xanthium strumarium C. F. Smith 1943-10-9 226 Santa Barbara N end of Cheltenham Rd, above Tunnel Rd, Mission Cyn Comment
  SBBG86419  Xanthium strumarium C. F. Smith 1949-9-15 2452 Santa Barbara around Laguna Blanca (Hope Ranch Lake) Comment
  SBBG88149  Xanthium strumarium C. F. Smith 1965-9-15 Santa Barbara in oil fields in foothills of Cuyama Comment
  SBBG88330  Xanthium strumarium S. A. Junak 1988-9-1 SN 267 Ventura barge landing area at Daytona Beach near gravel piles 6 Comment
  SBBG88815  Xanthium strumarium C. F. Smith 1943-9-2 25 Santa Barbara N end of Cheltenham Rd, near Montrose Place above Tunnel Rd, Mission Cyn Comment
  SBBG94207  Xanthium strumarium C. F. Smith 1956-1-22 Santa Barbara upper Gibraltar Lake, near Mono Adobe, upper Santa Ynez River Comment
  SBBG96653  Xanthium strumarium H. M. Pollard 1957-10-17 Santa Barbara Summerland Comment
  SD113178  Xanthium strumarium Darley F. Howe 1950-9-17 2027 San Diego Just east of the old bridge over Lake Hodges Comment
  SD113179  Xanthium strumarium D. F. Howe 1935-8-4 292 San Diego Lower Tia Juana (sic) Valley. Comment
  SD118569 Image available Xanthium strumarium Duffie Clemons 1985-7-7 1175 San Diego In dry stony stream bed at mouth of canyon Ao mile west of I-15 and I(c) m east of Shawn Ave. dead-end. 29 Comment
  SD12055  Xanthium strumarium Frank F. Gander 1935-7-10 233 7 San Diego San Luis Rey river west of Pala, San Diego. Comment
  SD12320  Xanthium strumarium Frank F. Gander 1935-10-24 268 12 San Diego 2 miles northwest of Oak Grove. Comment
  SD136625  Xanthium strumarium John W. Brown 1995-5-28 MM 249 San Diego McGinty Mountain, northern portion, western edge of The Mesa Comment
  SD146358  Xanthium strumarium Jon Rebman, Annette Winner and Oscar Solis 1999-9-10 5989 San Diego North Park area of the city of San Diego; canyon just south of Juniper St. between 33rd St. and Commonwealth Ave. 139 Comment
  SD152114  Xanthium strumarium Jon Rebman, Oscar Solis, Karen Rich, Bob Lauri 2000-2-11 6177 San Diego San Diego Urban Canyons, North Park/Golden Hill: Cedar Ridge area, canyons 149 Comment
  SD152914  Xanthium strumarium Steve Boyd, Tim Ross, Dave Bramlet 1992-9-9 7658 Riverside So. Santa Ana Mtns: Upper San Mateo Cyn, fr. the jctn of Tenaja Rd (7S01) & Los Alamos Rd (7S04) at the confluence of Los Alamos Creek., up the San Mateo Trail no. to Potrero de la Cienega. Along stream, vicinity of trailhead at jctn of 7S01 & 7S04. 395 Comment
  SD153392  Xanthium strumarium Jeannie Gregory 2003-6-7 376 San Diego Alpine, west 5 acres of old El Rancho Metate on Tavern Road. 580 Comment
  SD154361  Xanthium strumarium Karen Rich 2003-10-19 119 San Diego In 1600 block of San Dieguito Road, at intersection of Windland Hills Drive. 29 Comment
  SD154362  Xanthium strumarium Carrie Schneider 2003-9-28 11 San Diego East San Diego City, West Switzer Canyon area near the border of North Park and Golden Hill; North of Hwy 94 and East of Interstate 805 57 Comment
  SD156420  Xanthium strumarium Jon P. Rebman, A. Pigniolo and R. Cerutti 2002-8-2 8222 San Diego El Capitan Reservoir, southeast end where Conejos Creek dumps into the lake; southeast of El Cajon Mountain, northwest of Alpine and north I-8 at Peutz Valley 230 Comment
  SD158776  Xanthium strumarium Joe Barth 2004-8-17 81 San Diego Chula Vista Wildlife Reserve: in southeast SanDiego Bay (access via electrical power plant). 0 Comment
  SD159775  Xanthium strumarium Dick Schwenkmeyer 2004-9-8 66 San Diego Greenbelt section of Shepard Canyon, just east of Santo Road in Tierrasanta 121 Comment
  SD160366  Xanthium strumarium Margaret Fillius 2004-6-28 151 San Diego Rose Canyon, in open area near riparian 29 Comment
  SD160367  Xanthium strumarium Gay Dorius 2004-9-6 109 San Diego Rose Canyon East extension to the West end of Govenor Dr. 103 Comment
  SD160368  Xanthium strumarium Jeannie Gregory, M. A. Kessler, J. Barth, W. Sangkatavat 2004-8-20 1106 San Diego Lake Sutherland; off of Highway 78; eastern edge at Santa Ysabel Creek inlet 616 Comment
  SD164282  Xanthium strumarium Jon P. Rebman, Jeannie Gregory 2003-7-25 9432 San Diego Rancho Jamul Ecological Reserve: west of Hwy. 94, south of Jamul & north of Otay Lakes Road; pond east of Jamul Creek and old cement kiln 224 Comment
  SD165266  Xanthium strumarium Nuri Pierce, Chris Schlech, Joe Barth, Vols. from HelixES 2004-8-28 26 San Diego Lakeside, East end of El Monte Road, El Capitan Reservoir, Upward from the dam 173 Comment
  SD165755  Xanthium strumarium Mark A. Elvin, Harry Spillman et al. 2005-4-2 4131 San Diego E side of Otay Mtn; Marron Creek along Marron Valley Road; 2.1km (air) N of Mexico; near gate to City of San Diego Preserve. 274 Comment
  SD166878  Xanthium strumarium Jon P. Rebman, J. Gregory & parabotany team 2004-8-20 10660 San Diego Lake Sutherland: north of Hwy. 78 between Ramona and Santa Ysabel; dry lakebed at southeast end of lake 605 Comment
  SD167195  Xanthium strumarium Andrew C. Sanders 2005-10-7 31763 San Diego Agua Hedionda Lagoon Ecological Reserve, SE of the lagoon near Cannon Rd. and west of El Camino Real, SSE of Laguna Riviera Park but south of Agua Hedionda Creek Quad 3 Comment
  SD167196  Xanthium strumarium Andrew C. Sanders 2005-10-12 31840 San Diego Carlsbad, Carlsbad Highlands Ecological Reserve, spring in canyon ca. 0.8 mile south of Cerro de la Calavera 29 Comment
  SD167742  Xanthium strumarium Barbara Sullivan, Darren Smith 2005-2-4 119 San Diego City of San Diego, Torrey Pines State Reserve, along reserve road North of Lodge. 46 Comment
  SD169836  Xanthium strumarium Beverly Pecunia 2005-8-29 9 San Diego NE of the city of Escondido, N shore of western section of Lake Wohlford, NE end of boat dock parking lot near entrance to park. 458 Comment
  SD169837  Xanthium strumarium Richard L. Breisch 2005-5-21 74 San Diego City of San Diego(Mission Bay Park), north side of San Diego River, south of Sea World Dr 1.25 mi W of its junction with I-5. 4 Comment
  SD169838  Xanthium strumarium David Woelfel, Beatrice Woelfel 2005-9-5 32 San Diego 5 mi NW of city of Fallbrook, 0.3 mile on De Luz Murrieta Rd southwest of Riverside County line at first stream crossing on north side of road just off road. 166 Comment
  SD172758  Xanthium strumarium David Woelfel, Beatrice Woelfel 2005-9-17 56 San Diego Along Sandia Canyon Creek just north of the confluence with Santa Margarita River, approx 1.5 miles north of Fallbrook and 0.3 miles west of intersection of Rock Mountain Rd and Sandia Creek Dr. 98 Comment
  SD173411  Xanthium strumarium Andrew C. Sanders 2005-6-22 31169 San Diego Buena Vista Lagoon Ecological Reserve (DFG), Carlsbad, north side of lagoon between Carlsbad Blvd. (S-21) and the RR, south of Eaton St. Comment
  SD174387  Xanthium strumarium Margaret R. Mulligan, Joe Barth 2005-8-1 1294 San Diego McGinty Mountain Ecological Reserve (Calif Fish & Game). SE of city of El Cajon. SE of intersection of Willow Glen Dr and Hillsdale Rd, in bed of Sweetwater River 118 Comment
  SD174762  Xanthium strumarium Jon P. Rebman, J. Gregory, J. Rocks, & M. Hawke 2005-5-17 11932 San Diego Otay Mountain Ecological Reserve (California Dept. of Fish & Game): Southeast of Lower Otay Lake, east of the landing strip; just south of Otay Lakes Road near the reserve entrance 155 Comment
  SD175380  Xanthium strumarium Jon P. Rebman, J. Gregory, M. Mulligan, & J. Barth 2005-8-13 12229 San Diego San Vicente Reservoir: North of Lakeside, east of Hwy. 67, northeast of intersection between Moreno Ave. and Vigilante Road; west side of reservoir in the first cove north of the boat landing 195 Comment
  SD175720  Xanthium strumarium Jon P. Rebman, M. Mulligan, K. Rich, M. White & J. Stallcup 2005-9-11 12303 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
  SD176361  Xanthium strumarium Margaret R. Mulligan, Joe Barth 2005-8-11 1354 San Diego Sycuan Peak Ecological Reserve (California Dept of Fish & Game). SE of Dehesa, 1 mi SW of Loveland Reservoir, 1.25 mi N of Sycuan Peak, in the Sweetwater River Watershed, at the E end of Sloan Ranch Truck Trail. 248 Comment
  SD176362  Xanthium strumarium Margaret R. Mulligan, Joe Barth 2005-8-9 1346 San Diego Walker Canyon Ecological Reserve (California Fish & Game): between the towns of Boulevard and Jacumba on the north side of Interstate 8. Western half of riparian zone. 938 Comment
  SD177269  Xanthium strumarium Barbara Sullivan 2005-8-9 240 San Diego City of San Diego, Crest Canyon, in bottom of canyon, just North of the west end of Lozana Rd on half-mile loop trail. 89 Comment
  SD177270  Xanthium strumarium Andrea Harrison 2005-9-15 122 San Diego Poway, West Sycamore Canyon, 2 mi SW of the intersection of Scripps Poway Parkway and Sycamore Canyon Road. 220 Comment
  SD177875  Xanthium strumarium Jon P. Rebman, J. Gregory and M. Mulligan 2006-10-5 12974 San Diego Lake Henshaw (Vista Irrigation District property): approx. 2.5 miles N of the Lake; along Henshaw Truck Trail where it crosses the riparian area that drains into the lakel 835 Comment
  SD178721  Xanthium strumarium MaryAnn Brooks-Gonyer, Beverly Pecunia 2005-10-24 408 San Diego About 6.5 miles north of Escondido, on the western edge of Valley Center, 1 mi East of Hwy 395, Ao mile south of Circle R Drive, in Castle Creek Treasures housing development in a preserved riparian area N of Tobira Dr. and W of Platanus Dr. 146 Comment
  SD178722  Xanthium strumarium Victoria Marshall 2006-7-7 369 San Diego The Ramona Grasslands (The Nature Conservancy)on the Santa Maria Creek 0.5 mi northeast of junction of Archie Moore Rd and Highland Valley Rd and 0.75 mi northwest of junction of Highland Valley Rd and Rangeland Rd. 405 Comment
  SD179778  Xanthium strumarium Jon P. Rebman, J. Gregory and L. Aerne-Hains 2007-7-9 13689 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
  SD180407  Xanthium strumarium Nancy Nenow, Char Glacy 2005-9-3 185 San Diego San Diego, in northern part of Balboa Park on the west side of Florida Drive just south of Morley Field Drive. 57 Comment
  SD182029  Xanthium strumarium Kerry W. Key 2005-12-29 176 San Diego San Diego, Carmel Valley. Wetland and drainage basin 100 m south of SR56 and 20 feet south of El Camino Real. 9 Comment
  SD182030  Xanthium strumarium Ian Cain, Emily Clayton 2006-7-12 272 San Diego City of Vista. Anstine-Audubon Bird Sanctuary. 170 meters north of the intersection of Hutchison and Osborne Street. 55 meters south of the intersection of Hutchison Street and Hidden Lake Lane. 92 Comment
  SD182962  Xanthium strumarium Jon P. Rebman, J. Gregory, K. Rich, & P. Famolaro 2007-9-12 13901 San Diego Sweetwater Reservoir: east of National City and south of La Presa; along the north shore near Neal Cove; northeast side of the reservoir 71 Comment
  SD182963  Xanthium strumarium Jon P. Rebman, J. Gregory, K. Rich, & P. Famolaro 2007-9-12 13930 San Diego Sweetwater Reservoir: east of National City and south of La Presa; vicinity of wet marsh and meadow areas just northeast and upstream from the east end of the reservoir 71 Comment
  SD184695  Xanthium strumarium Paul Beiley 2006-6-15 103 San Diego San Diego River floodplain about 300 yards N of river, just S of Willow Rd. and about Ao-mile E of Ashwood St., Lakeside. Stelzer Summit is about 1Ao miles to NE. 128 Comment
  SD185571  Xanthium strumarium Jolynn Robbins 2006-9-4 58 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  SD186699  Xanthium strumarium Jon P. Rebman, M. Mulligan & W. Schmidtmann 2008-6-19 15576 San Diego Camp Pendleton Marine Corps Base: along North River Road, just east of Stuart Mesa Road; along the Santa Margarita River in the southwestern portion of the base 3 Comment
  SD186700  Xanthium strumarium Jon P. Rebman, Margie Mulligan 2008-5-28 15295 San Diego Hellhole Canyon Open Space Preserve: east of Valley Center and northeast of Lake Wohlford; southwest portion of preserve, along Hellhole Creek just west of the canal pipe 451 Comment
  SD187372  Xanthium strumarium Scott D. White, Angelia Carey 2004-9-16 10766 Riverside San Jacinto river wash and adjacent alluvial benches, near Indian Creek confluence. 502 Comment
  SD187768  Xanthium strumarium Larry Hendrickson 2006-9-1 1808 San Diego Banner, State Hwy 78, 3 mi W of Scissors Crossing, Banner Recreation Ranch, near Banner Creek at base of Volcan Mtn in private campground. 839 Comment
  SD188796  Xanthium strumarium Jon P. Rebman, M. Mulligan & W. Schmidtmann 2008-6-19 15695 San Diego Camp Pendleton Marine Corps Base: near North River Road, east of Stuart Mesa Road in the southwestern portion of the base; in the Santa Margarita River bed along the water pipe that crosses the river 10 Comment
  SD188797  Xanthium strumarium Ian Cain, Terri Foster, Emily Clayton 2006-8-14 306 San Diego City of Lemon Grove. Chollas Lake Community Park. North Chollas Canyon. Just east of the Chollas Canyon Parking Lot. 102 Comment
  SD189563  Xanthium strumarium Jerilyn Hirshberg 2006-9-10 1327 San Diego Cleveland National Forest, Inaja Memorial Park, 0.25 mile south of entrance to Inaja picnic area on Highway 78/79 between Santa Isabel and Wynola. 940 Comment
  SD190460  Xanthium strumarium Jon P. Rebman, M. Mulligan & D. Bieber 2008-6-25 15755 San Diego Camp Pendleton Marine Corps Base: south of Stagecoach Road and north of the airstrip along Vandegrift Blvd.; in the Santa Margarita River bed 20 Comment
  SD192423  Xanthium strumarium Jan E. Maxted, Don Maxted 2006-10-6 380 San Diego Bratton Valley, land surrounding 18569 Deerhorn Valley Rd, 3 mi N of Dulzura, 2.5 mi SE of Lyons Peak summit, I(c) mi. SE of inters of Honey Springs Rd & Deerhorn Valley Rd. 619 Comment
  SD193252  Xanthium strumarium A. C. Sanders 2005-6-24 31197 San Diego San Dieguito Lagoon Ecological Reserve, north edge of reserve along Palm Lane, east of San Dieguito Dr. Comment
  SD196327  Xanthium strumarium Elizabeth P. Lowe 2006-6-18 156 San Diego City of San Marcos, 1 3/4 mi S of Hwy 78, 1/1/2 mi W of Country Club Drive, N side of Oceanview Dr. 0.1miles W from the intersection with Washingtonia 417 Comment
  SD196328  Xanthium strumarium Ian Cain 2007-10-7 651 San Diego City of San Diego. Tecolote Canyon east of Mission Bay and I-5, south of Balboa Avenue, 80 yds NW of end of Mount Ararat Drive. 56 Comment
  SD198283  Xanthium strumarium Melvin M. Sweet 2007-7-31 444 San Diego City of San Diego; 1/4 mile from the end of the canyon running from Eastgate Mall (starting 1/8 mile E of the intersection of Eastgate and Genesee Ave) to the end of Roselle St. 32 Comment
  SD198284  Xanthium strumarium CRES Native Seed Gene Bank, M Kedziora 2007-9-3 408 San Diego San Marcos, 0.2 mi W of junction of S Bent Ave and Discovery St, 0.2 mi NE of junction of W San Marcos Blvd and Via Vera Cruz 149 Comment
  SD199064 Image available Xanthium strumarium Jon P. Rebman, M. Mulligan, M. Dinkins, B. Lardiere 2009-7-16 18194 San Diego Camp Pendleton Marine Corps Base: Delta Training Area in the northwestern portion of base; east of Talega Canyon Road along San Mateo Creek and west of Devil Canyon 130 Comment
  SD199065  Xanthium strumarium Jon P. Rebman, K. Rich, R. Kurner, E. Berbeo 2009-9-1 18265 San Diego Cuyamaca Rancho State Park: Middle Peak; along Middle Peak Loop Fire Road on the east side of the peak 1615 Comment
  SD199066  Xanthium strumarium Victoria Marshall 2007-10-12 676 San Diego Ramona; Simon Park Open Space Preserve, park entrance ca 2.0 mi south of intersection of Old Julian Highway and Vista Ramona Rd. 476 Comment
  SD201429  Xanthium strumarium John Groth, Terri Groth 2007-9-29 109 San Diego Cleveland National Forest, Cuyamaca Mountains, 3.75 mi SW of Middle Peak, 500' E of the Boulder Creek Road crossing, on Boulder Creek 824 Comment
  SD203287  Xanthium strumarium Margaret R. Mulligan, J. Rebman, M. Dinkins 2009-3-5 2656 San Diego Camp Pendleton Marine Corps Base, White Beach Training Area, along beach ca. I(c) mi NW of Santa Margarita River outlet. 6 Comment
  SD205567  Xanthium strumarium Jerilyn Hirshberg 2008-8-9 1933 San Diego Cleveland National Forest, W side of Cuyamaca Mountains, 0.5 mile east of Saddleback parking area, edge of Cedar Creek .25 mile NE of intersection with Cedar Creek Road 559 Comment
  SD207688  Xanthium strumarium Margaret R. Mulligan, J. Hirshberg 2008-10-22 2637 San Diego Hauser Wilderness, Cleveland National Forest: N edge of Wilderness, in first large drainage to the NW of Stokes Valley along Skye Valley Road. Drainage begins ca. 1 mi SE on Skye Valley Road from gate to Skye Valley. 869 Comment
  SD207689  Xanthium strumarium Carolyn Martus 2008-6-16 759 San Diego Fallbrook, 3I(c) mi NE of, 3 mi NW of Rainbow, by Santa Margarita River on the trail that runs on north and west side of river about 1.2 miles north or upstream of the junction of the Santa Margarita river and Willow Glen road. 142 Comment
  SD207690  Xanthium strumarium CRES Native Seed Gene Bank, B Moseley 2007-8-27 404 San Diego Valley Center, San Pasqual Reservation, 0.10 NE of Education Department at the corner of Kumeyaay Way and San Pasqual Road 523 Comment
  SD210091  Xanthium strumarium Jon P. Rebman, J. Schlachter, L. Aerne Hains, & volunteers 2010-6-30 19787 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
  SD210092  Xanthium strumarium Jon P. Rebman, W. Schmidtmann and volunteers 2010-11-16 20419 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
  SD210093  Xanthium strumarium Jon P. Rebman, W. Schmidtmann and volunteers 2010-11-16 20459 San Diego Camp Pendleton: Golf Training Area; west of the Santa Margarita River; along De Luz Creek north of Camp De Luz 64 Comment
  SD210816  Xanthium strumarium Jerry Green 2009-7-27 97 San Diego Rancho Penasquitos, Black Mountain area, 1/4 mile north of Black Mountain Rd & Carmel Valley Rd 209 Comment
  SD212519  Xanthium strumarium Andrew C. Sanders 2005-5-27 30322 San Diego Batiquitos Lagoon Ecological Reserve, north side of lagoon, east of the I-5 Fwy, along the trail past the nature center Quad: Encinitas 7.5A Q. Comment
  SD216844  Xanthium strumarium Jon P. Rebman, Warren Schmidtman 2011-5-9 21597 San Diego Camp Pendleton: Uniform Training Area; west of I-5, along beach at the mouth of a canyon; north of Las Pulgas Road, north of the ocean overlook pullout on southbound I-5 and south of San Onofre State Beach 3 Comment
  SD217238  Xanthium strumarium Darin L. Banks 1997-6-16 2130 San Diego Pala Indian Reservation; north of the San Luis Rey River, along Pala Creek, south of Pala Mission Road 113 Comment
  SD218617  Xanthium strumarium Richard L. Breisch 2010-8-4 736 San Diego City of San Diego, Tecolote Canyon Natural Park, abt Ao mi E of terminus of Burfurd Street, northeast of Tecolote Canyon Golf Course, in a tributary to Tecolote Creek 49 Comment
  SD21866  Xanthium strumarium Frank F. Gander 1938-7-7 6070 San Diego Spring Valley. Comment
  SD219386  Xanthium strumarium Jon P. Rebman, W. Schmidtmann, G. Kenney, et al. 2011-6-2 22107 San Diego Camp Pendleton: southwestern corner of Base north of the Santa Margarita River mouth; Training Area Beach F, just south of the LCAC facility; in a small canyon off of the beach and its surrounding slopes and coastal bluff 4 Comment
  SD219387  Xanthium strumarium Jon P. Rebman, W. Schmidtmann, J. Rocks, G. Kenney 2011-6-7 22134 San Diego Camp Pendleton: Training Area Beach F, around the tower just west of the LCAC facility; on the beach and surrounding coastal bluff 2 Comment
  SD219795  Xanthium strumarium Larry Hendrickson, Fredrick Campbell 2009-9-25 4278 San Diego Mesa Grande. San Dieguito River Park, Joint Powers Authority property. 2.8 air miles WNW of intersection of State hwy. 78-79 (Santa Ysabel), and 3.2 air miles SSE of access gate at Mesa Grande Road. Abt 4 mi W of Lake Sutherland dam. 853 Comment
  SD220254  Xanthium strumarium Nancy Nenow, Barbara Nolan 2010-6-9 1266 San Diego City of San Diego; Mira Mesa in the canyon south of Calle Cristobal and east of Camino Santa Fe on the north side of the dry riverbed. 102 Comment
  SD225478  Xanthium strumarium Jon P. Rebman, W. Schmidtmann and G. Kenney 2012-5-22 24017 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
  SD226360  Xanthium strumarium Barbara Booth, Chris Murphy 2011-6-19 532 San Diego Pala; Wilderness Gardens Preserve, entrance at 14209 Highway 76, at west edge of river at River View Trail crossing, near 0.25 miles NW of junction Highway 76 and Bodie Blvd. 181 Comment
  SD22913  Xanthium strumarium Frank F. Gander 1938-10-5 6546 San Diego Railroad Crossing, 3 miles west of Bostonia Comment
  SD22936  Xanthium strumarium Frank F. Gander 1938-10-5 6579 San Diego Alpine Comment
  SD23020  Xanthium strumarium Frank F. Gander 1938-10-5 6663 San Diego 3 miles southwest White Star. Comment
  SD230477  Xanthium strumarium Jon P. Rebman, W. Schmidtmann and G. Kenney 2012-11-6 25302 San Diego Camp Pendleton: Training Area Hotel; in the extreme eastern part of the Base; northwest of Fallbrook and just north of De Luz Road; along the Santa Margarita River just north of the De Luz Road bridge 85 Comment
  SD23055  Xanthium strumarium Frank F. Gander 1938-10-5 6699 San Diego Spring Valley. Comment
  SD23128  Xanthium strumarium Frank F. Gander 1938-10-20 6765 San Diego Near Foster, Ramona Road Comment
  SD23172  Xanthium strumarium Frank F. Gander 1938-10-20 6809 San Diego 5 miles northeast of Ramona. Comment
  SD23209  Xanthium strumarium Frank F. Gander 1938-10-20 6846 San Diego Junction Henshaw to Pala and Palomar Road, Highway to the stars Comment
  SD235930  Xanthium strumarium Sheri Konen, Mike Greene 2008-9-12 65 San Diego Ramona, 4Ao mi N of, about 1 mi W of Pamo Valley Rd along Cleveland National Forest Route 12S04 by Santa Ysabel Creek 277 Comment
  SD235931  Xanthium strumarium Joe Barth 2011-11-22 1963 San Diego N terminus of Lake Murray Blvd, 0.2 mile W of Grossmont College. City of San Diego. Mission Trails Regional Park trailhead area. 192 Comment
  SD235932  Xanthium strumarium Beverly Pecunia 2010-9-24 305 San Diego North of Escondido; 1.6 miles NE of I-15 and Mountain Meadows Road, W of Turner Lake 444 Comment
  SD235933  Xanthium strumarium Joe Barth 2011-10-25 1882 San Diego E side of Lake Murray, tip of Baltimore Drive finger of the lake. 163 Comment
  SD236228  Xanthium strumarium G. K. Helmkamp, E. A. Helmkamp 2006-10-10 11518 Nevada Northern Sierra Nevada Mountains Foothills: along Hwy CA-49, 5.8 miles NNW of Nevada City (Nevada City 7.5'Q) 750 Comment
  SD23637  Xanthium strumarium Frank F. Gander 1938-11-4 6917 San Diego San Luis Rey Valley, near Oceanside Comment
  SD238076  Xanthium strumarium Jon P. Rebman, W. Schmidtmann & G. Kenney 2014-4-16 27837 San Diego Camp Pendleton: southeastern portion of Base; Training Area Lima; in a ruderal/disturbed area along a dirt road just south of a large parking lot on 4th Street 103 Comment
  SD238077  Xanthium strumarium Jon P. Rebman, W. Schmidtmann & G. Kenney 2014-4-22 27983 San Diego Camp Pendleton: northwestern portion of Base; along Cristianitos Creek, west of Guacamole Road & southeast of Cristianitos Road, just north of the convergence with San Mateo Creek 27 Comment
  SD238645  Xanthium strumarium Jon P. Rebman, W. Schmidtmann & G. Kenney 2014-4-30 28123 San Diego Camp Pendleton: State Park Lease area: northwestern portion of Base; west of the intersection of Cristianitos Road & Talega Road; along Cristianitos Creek 53 Comment
  SD238646  Xanthium strumarium Jon P. Rebman, W. Schmidtmann & G. Kenney 2013-5-21 26651 San Diego Camp Pendleton: south-central portion of Base; Training Area SMR2; northeast of the intersection of Vandegrift Blvd. and Basilone Road; along the southeast side of the Santa Margarita River 29 Comment
  SD242539  Xanthium strumarium Don Fosket 2013-7-18 162 San Diego Cleveland National Forest; north of Ramona; along the Santa Ysabel Creek Trail, 0.75 mile W of junction with Pamo Road 327 Comment
  SD243618  Xanthium strumarium John LaGrange 2010-7-27 704 San Diego Cleveland National Forest; north fork of canyon draining from Mesa Grande into Carney Canyon 0.85 mile south of Patton Lode Mine 641 Comment
  SD244969  Xanthium strumarium Jon P. Rebman, M. Rood, J. & S. Rebman-Rood, I. Happle 2013-10-5 27088 San Diego Anza-Borrego Desert State Park: Oriflamme Canyon; southeast of Julian, west of Box Canyon & south of Granite Peak; riparian area off of Mason Valley Truck Trail 829 Comment
  SD244970  Xanthium strumarium Jon P. Rebman, V. Marshall, J. La Grange, & D. Crockett 2013-6-5 26844 San Diego Cleveland National Forest: vicinity of Buckman Springs, NE of Morena Reservoir; south of Morena Stokes Valley/Corral Canyon Rd. and west of Buckman Springs Road; along streambed 925 Comment
  SD245695  Xanthium strumarium Richard L. Breisch 2011-8-5 816 San Diego Lake Morena County Park; along Cottonwood Creek, just south of Corral Canyon Road about 0.75 mile SW of junction with Buckman Springs Road (S-1). 925 Comment
  SD245696  Xanthium strumarium Andy Mauro, Kathleen Mauro 2008-6-27 65 San Diego Rancho Santa Fe; La Orilla Bridal Trail at NW corner of La Orilla and Rambla de los Flores streets 13 Comment
  SD245697  Xanthium strumarium Richard L. Breisch 2013-7-5 1067 San Diego Cleveland National Forest; vicinity 1.8 miles N of junction Kitchen Creek Road and I-8; below & west of Pacific Crest Trail; in Kitchen Creek streambed. 1125 Comment
  SD247075  Xanthium strumarium John LaGrange 2010-8-4 749 San Diego San Elijo Lagoon Preserve; W of I-5 along the freeway berm; 0.25 mile S of Manchester Avenue 3 Comment
  SD247824  Xanthium strumarium Nancy Nenow, Alina Levy 2011-8-8 2056 San Diego Torrey Pines, Black's Beach on the beach; about 180 yards north of the stairs coming down from the gliderport, at the bottom of a small gully. 3 Comment
  SD254960  Xanthium strumarium Susan T Welker 1990-9-7 San Diego San Elijo Lagoon Ecological Reserve; Along trail between El Camino Real and Santa Carina, Solana Beach. East of I-5, south side of Reserve near fresh water marsh 7 Comment
  SD254961  Xanthium strumarium Susan T Welker 1991-6-2 San Diego San Elijo Lagoon Ecological Reserve; Along trail north of Holmwood Canyon, near water. West of I-5, south side of Reserve 2 Comment
  SD25800  Xanthium strumarium Frank F. Gander 1939-9-14 7719 San Diego Spring Valley Comment
  SD25823  Xanthium strumarium Frank F. Gander 1939-9-14 7742 San Diego Campo Comment
  SD262008  Xanthium strumarium Jon Rebman, W. Schmidtmann, & G. Kenney 2016-8-24 31895 San Diego Camp Pendleton: west-central portion of Base; Oscar Two Training Area; in riparian area just south of Las Pulgas Canyon Road to the east of Stuart Mesa Road and west of Basilone Road. 22 Comment
  SD263586  Xanthium strumarium Jim Riley 2013-10-15 124 Orange San Clemente area; 0.56 miles ESE intersection Avenida Pico and Camino La Pedriza; just N San Diego County line 68 Comment
  SD28167  Xanthium strumarium Frank F. Gander 1940-9-25 8799 San Diego Encinitas Comment
  SD39601  Xanthium strumarium E. A. Purer 1931-9-1 2294 Unknown Silver Strand. Sand - along roadside. Comment
  SD39602  Xanthium strumarium Edith A. Purer 1932-8-25 4749 Santa Barbara Near Guadalupe Comment
  SD39603  Xanthium strumarium Edith A. Purer 1931-9-1 San Diego Oceanside Comment
  SD43528  Xanthium strumarium Philip A. Munz 1946-10-2 11556 Orange Santa Ana River Bottom, Rancho Santa Ana 120 Comment
  SD53592  Xanthium strumarium E. Norland 1963-7-29 San Diego Spring Valley, southwest corner of Kenora Drive and Campo Highway Comment
  SD80438  Xanthium strumarium Helen V. Witham 1971-5-18 1448 San Diego San Onofre Bluffs State Beach Comment
  SD83535  Xanthium strumarium R. Mitchel Beauchamp, R. C. Pierce 1970-12-5 1412 San Diego Riverbed, Tijuana River Valley. Comment
  SD8626  Xanthium strumarium 1885-6-2 San Diego Chollas Valley. Comment
  SDSU12784  Xanthium strumarium H. Wedberg 1969-7-7 1472 San Diego At Amaya Dr. x Severin in La Mesa. 152 Comment
  SDSU13662  Xanthium strumarium W. Miller, C. Mosse 1972-7-11 Riverside Comment
  SDSU13742  Xanthium strumarium G. D. Beckett 1951-4-18 9148 San Diego Bonita. Comment
  SDSU13743  Xanthium strumarium H. Wedberg 1960-7-5 538 San Diego Front yard, 9544 Rawlins Way, Santee, Carlton Hills tract. Comment
  SDSU14556  Xanthium strumarium Craig H. Reiser, Kyle L. Ince 1990-6-22 22 -VI-90 San Diego Camp Joseph Pendleton MCB. San Diego County, California. Base Section: Oscar I. 9 Comment
  SDSU14557  Xanthium strumarium John w. Brown 1993-9-24 S 1 .68 San Diego Along dirt road adjacent to San Mateo Canyon. Sierra One (Bravo One). Marine Corps Base Camp Pendleton Sect. 28, NE 1/4, T.8 S., R.6 W, USGS 7.5 minute. San Clemente Quadrangle. 122 Comment
  SDSU17547  Xanthium strumarium Ian Cain 2007-10-12 653 San Diego San Diego, Mission Trails Regional Park. North Fortuna mt. South of Highway 52, east edge of SDSU property, North West of grasslands. Comment
  SEINET269276  Xanthium strumarium G. R. Ballmer 1994-10-12 San Bernardino San Bernardino Valley: San Timoteo Creek about 100 m above its confluence with the Santa Ana River below Waterman Avenu Comment
  SEINET3240703  Xanthium strumarium Melvin M. Sweet 2007-1 444 San Diego City of San Diego; 1/4 mile from the end of the canyon running from Eastgate Mall (starting 1/8 mile E of the intersection of Eastgate and Genesee Ave) to the end of Roselle St. 32 Comment
  SEINET3245876  Xanthium strumarium G. K. Helmkamp, E. A. Helmkamp 2009-1 15541 Sacramento Northern Sacramento Valley: along Latrobe, 3.2 miles west of the El Dorado County line, 1 mi. due north of Rancho Murieta. 73 Comment
  SEINET3831687  Xanthium strumarium Jon P. Rebman, W. Schmidtmann, G. Kenney 2012-1 25302 San Diego Camp Pendleton; Training Area Hotel; in the extreme eastern part of the Base; northwest of Fallbrook and just north of De Luz Road; along the Santa Margarita River just north of the De Luz Road Bridge 85 Comment
  SEINET7990991  Xanthium strumarium Jon P. Rebman 1999-9-10 5989 San Diego San Diego city, N Park area of the city of San Diego 140 Comment
  SEINET7990993  Xanthium strumarium Jon P. Rebman 2000-2-11 6177 San Diego Cedar Ridge Park Canyons, N Park / Golden Hill: Cedar Ridge area, Canyon 150 Comment
  SFV7095  Xanthium strumarium K. A. Wilson 1974-8-21 1446 Los Angeles Santa Monica Mountains Malibu Creek. Kanan Road and Triunfo Canyon Road intersection. 245 Comment
  UC1070511  Xanthium strumarium A. Simontacchi 1937-7-16 303 Lake 0.6 mi wnw Laurel Beach; Lakeport Quad. 405 Comment
  UC1070512  Xanthium strumarium H. S. Yates 1936-7-26 5944 Alameda 2 mi w San Leandro; Hayward Quad. 3 Comment
  UC1070513  Xanthium strumarium B. Schreiber 1936-8-16 2330 Lake 1 mi e Lower Lake; Lower Lake Quad. 457 Comment
  UC1070518  Xanthium strumarium Jerome S. Horton 1937-9-21 494 Los Angeles Dalton Canyon Dam Pomona Quad. 457 Comment
  UC1176880  Xanthium strumarium John Thomas Howell 1946-9-8 Marin near Ignacio Comment
  UC1189989  Xanthium strumarium J. H. Thomas 1954-7-9 4356 Santa Clara about 1 mi s Gilroy (at the intersection of Thomas Road and Camadero Creek); Carnadero Creek 60 Comment
  UC1192253  Xanthium strumarium Malcolm A. Nobs, S. Galen Smith 1949-9-3 1823 Inyo on Highway 395 3 mi n Lone Pine Comment
  UC128022  Xanthium strumarium Harriet A. Walker 1907-9-22 973 Solano Suisun Comment
  UC1294173  Xanthium strumarium E. K. Balls and E. R. Blakley 1958-10-12 23661 Santa Barbara 2 mi e Main Ranch (along road to China Harbor); Santa Cruz Island 213 Comment
  UC131218  Xanthium strumarium C. F. Baker 1902-8-30 1512 Santa Clara Palo Alto Comment
  UC131236 Image available Xanthium strumarium C. F. M. 1903-10-15 1760 Santa Clara foothills near Stanford Univ.; ; near Stanford Univ. Comment
  UC131246  Xanthium strumarium T. S. Brandegee 1901-3-28 Imperial Cameron Lake Colorado Desert, Cameron Lake Comment
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Sep 10 2007
  UC1329960  Xanthium strumarium James E. Cole 1941-11-2 936 Riverside Smith Water Canyon Joshua Tree National Monument Comment
  UC1350051  Xanthium strumarium Miss Harriet A. Walker 1906-9-30 478 Alameda vicinity West Berkeley; Berkeley Comment
  UC1354221  Xanthium strumarium P. M. Ray 1962-9-2 Contra Costa San Ramon, on Hwy. 21 Comment
  UC1445364  Xanthium strumarium Mary DeDecker 1978-9-23 4808 Inyo n of (Owens Valley) Lone Pine (Owens River e of Alabama Gates); Owens Valley, Owens River 1115 Comment
  UC149139  Xanthium strumarium L. R. Abrams 1903-9-27 4023 Monterey Neponset Salinas River Comment
  UC1548582  Xanthium strumarium D. A. Roberts 1983-7-23 FS 93 Mono ne end Fish Slough (n end of Owen Valley); , Rocked-in-Spring Comment
  UC164145  Xanthium strumarium Geo. D. Butler 1908-9-5 527 Siskiyou near Yreka Comment
  UC168741  Xanthium strumarium Katharine Brandegee Oct 1905 San Diego near Ramona (Stockton Ranch) Comment
  UC168813  Xanthium strumarium Katharine Brandegee Oct 1905 San Diego near Ramona (Stockton Ranch) Comment
  UC168816  Xanthium strumarium Katharine Brandegee Oct 1905 San Diego near Ramona (Stockton Ranch); Stockton Ranch Comment
  UC179073  Xanthium strumarium A. A. Heller 1914-7-31 11629 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  UC1922448  Xanthium strumarium Naomi Fraga, Daniel Brock 2004-10-31 1339 Kern Sierra Nevada; Southern Sierra Nevada region: THE OWENS PEAK EASTERN WATERSHED. Indian Wells Canyon. Comment
  UC195297  Xanthium strumarium S. B. Parish 1913-10-13 8715 San Diego near Cottonwood Station [now Barrett Junction]; Potrero Grade 304 Comment
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Jul 20 2016
  UC198772  Xanthium strumarium Katharine Brandegee Oct 1905 San Diego near Ramona (Stockton Ranch) Comment
  UC201224  Xanthium strumarium Harriet A. Walker 1907-9-8 926 San Joaquin Lathrop Comment
  UC201532  Xanthium strumarium S. B. Parish 1907-8-20 6426 San Bernardino San Bernardino Valley 300 Comment
  UC2044999  Xanthium strumarium Nick Jensen with Tommy Stoughton, Evan Myer, Manuel Lujan 2013-9-13 603 Kern Tejon Ranch. Lower Pescado Creek about 1.25 road km to the north of the junction with Contour Road. Comment
  UC2045087  Xanthium strumarium Nick Jensen with Neal Kramer 2014-9-7 2474 Kern Tejon Ranch. Tejon Hills, Comanche Point. In and immediately around Comanche Spring. Comment
  UC36800  Xanthium strumarium J. A. Sanford 1890-1 185 San Joaquin West Stockton Comment
  UC36801  Xanthium strumarium J. Burtt Davy 1896-9-17 Alameda Alameda Marshes, nw Alameda County Alameda Marshes Comment
  UC36813  Xanthium strumarium Michener and Bioletti Aug 1891 Sacramento Sacramento Comment
  UC36814  Xanthium strumarium J. A. Sanford 1890-1 8 San Joaquin Comment
  UC450817  Xanthium strumarium F. A. MacF. May 1931 2945 San Diego Lake Hodges Comment
  UC455701  Xanthium strumarium I. J. Condit 1908-11-9 San Luis Obispo San Luis Obispo Comment
  UC494418  Xanthium strumarium Philip A. Munz 1932-8-31 12811 Los Angeles Playa del Rey Comment
  UC535716  Xanthium strumarium Eleanor Armstrong 1934-8-2 1135 Humboldt Richardson Grove 121 Comment
  UC54945  Xanthium strumarium H. P. Chandler 1902-9-9 2017 Los Angeles roadside near Ballona Lagoon Comment
  UC582822  Xanthium strumarium Philip A. Munz 1935-10-21 14656 San Bernardino Rincon Comment
  UC614953  Xanthium strumarium Beryl O. Schreiber 1936-8-16 2330 Lake 1 mi e Lower Lake 457 Comment
  UC64835  Xanthium strumarium Harley P. Chandler 1904-7-5 5399 San Diego Escondido 243 Comment
  UC673077  Xanthium strumarium Joseph P. Tracy 1940-10-5 16747 Humboldt Trinidad 3 Comment
  UC673078  Xanthium strumarium Joseph P. Tracy 1940-10-5 16747 Humboldt Trinidad 3 Comment
  UC676846  Xanthium strumarium Ira L. Wiggins 1927-8-29 2598 San Diego along Hatfield Creek 4 mi e Ramona (on highway to Santa Ysabel); Hatfield Creek Comment
  UC676847  Xanthium strumarium Ira L. Wiggins 1927-8-31 2701 San Diego near Cuyamaca Lake (near Fox farm above Boulder Creek) Comment
  UC691363  Xanthium strumarium Mary L. Bowerman 1935-9-13 3333 Contra Costa outer margin Chase Pond (Mount Diablo); , Chase Pond 548 Comment
  UC691366  Xanthium strumarium Mary L. Bowerman 1930-9-27 467 Contra Costa ca 2 mi from entrance (= North Road) Mount Diablo w road; Mount Diablo Comment
  UC691368  Xanthium strumarium Mary L. Bowerman 1936-9-9 3540 Contra Costa just below Blackhawk Ranch; Mount Diablo, Sycamore Canyon Comment
  UC729855  Xanthium strumarium Carl B. Wolf 1932-7-7 Orange 100 ft w Hansen Road (Bixby Ave, Bryant Ranch); ; 100 ft w of se corner of ne 40 of ne 160 of Sect. 34 T4S R11W Comment
  UC74043  Xanthium strumarium Dr. J. Q. Adams Sep 1905 Los Angeles near Soldier's Home Comment
  UC832923  Xanthium strumarium A. A. Heller 1916-9-5 12647 Butte 8 mi n Oroville Comment
  UC832925  Xanthium strumarium Mrs. W. J. Williamson 1919-7-28 331 Tuolumne Morman Creek 213 Comment
  UC891369  Xanthium strumarium Mary L. Bowerman 1936-9-9 3540 Contra Costa just below Blackhawk Ranch; Mount Diablo, Sycamore Canyon Comment
  UC89860  Xanthium strumarium D. Cleveland 1885-5-28 San Diego Chollas Valley Comment
  UC909711  Xanthium strumarium Milo S. Baker Aug 1950 Lake about 1.5 mi w Lower Lake (near highway) Comment
  UCD137117  Xanthium strumarium G. K. Helmkamp; E. A. Helmkamp 2006-10-10 11518 Nevada Northern Sierra Mountains Foothills: along Hwy. CA-49, 5.8 miles NNW of Nevada City. 750 Comment
  UCD137119  Xanthium strumarium G. K. Helmkamp; E. A. Helmkamp 2007-9-1 12861 El Dorado Northern Sierra Nevada Mountains. Happy Valley Road, 3.2 miles E of its junction with CA-E-16 (just W of Sweeney's Crossing). 627 Comment
  UCD137123  Xanthium strumarium K. M. Meyer; A. Townesmith 2007-9-24 250 Santa Clara Henry W. Coe State Park, SW corner of park, Hunting Hollow entrance and parking area. California Bay. 253 Comment
  UCD137132  Xanthium strumarium M. Wiesendanger 1927-10-1 s.n. Yolo Campus. Comment
  UCD137150  Xanthium strumarium P. B. Kennedy 1920-6-23 s.n. Yolo Holland Land Co. Sacramento River - Clarksburg. Comment
  UCD137152  Xanthium strumarium Malcolm A. Nobs; S. Galen Smith 1949-9-3 1823 Inyo 3 miles north of Lone Pine. Comment
  UCD137154  Xanthium strumarium Henry M. Pollard 1957-10-17 s.n. Santa Barbara Southern Pacific Railroad, Summerland. Comment
  UCD137155  Xanthium strumarium Ernest C. Twisselmann 1961-10-30 6647 Kern Fremont Valley. 2.5 miles S of Cantil. 594 Comment
  UCD137159  Xanthium strumarium Henry M. Pollard 1957-10-17 s.n. Santa Barbara Southern Pacific Railroad, Summerland. Comment
  UCD137160  Xanthium strumarium John Thomas Howell 1955-7-9 5229 Santa Clara Lake Lagunita, Stanford University. 30 Comment
  UCD137161  Xanthium strumarium Beecher Crampton 1961-9-26 5989 Solano Suisun. Comment
  UCD137164  Xanthium strumarium G. F. Hrusa 1992-8-26 9540 San Joaquin Caswell Memorial State Park. Comment
  UCD137166  Xanthium strumarium Ernest C. Twisselmann 1965-7-29 11373 Kern Kern River at the upper town limits of Kernville. 815 Comment
  UCD137167  Xanthium strumarium Ernest C. Twisselmann 1964-9-29 10257 Kern Canal along the east side of the Refuge. 76 Comment
  UCD159469  Xanthium strumarium D. S. Park 2010-8-13 223 Napa Along Berryessa Knoxville Rd. In dried up creek bed. 229 Comment
  UCD161201  Xanthium strumarium Jean Shepard 2014-6-29 887 Yolo City of Davis. ENE Wildhorse Golf Course. From intersection of Covell Blvd. and Monarch Ln., about 0.1 mi E and about 0.1 mi N. Comment
  UCD161322  Xanthium strumarium Jake Ruygt 1979-7-21 767 Napa 1.9 miles west of Madronna St. on Spring Mountain Rd. (Coordinates estimated by label maker at UC Davis). 192 Comment
  UCD20761  Xanthium strumarium M. Bibbo; with E. Dean and K. Mawdsley 2002-8-29 111 Napa McLaughlin UC Reserve. S of the reserve near Hunting Creek campground where Hunting Creek Rd. crosses the Creek. 100 yards downstream of the campground. 640 Comment
  UCD38927  Xanthium strumarium Beecher Crampton 1961-10-25 6052 Yolo 2 miles west of Bryte, County Road 127, confluence of the Sacramento and Yolo Bypass. Comment
  UCD41054  Xanthium strumarium Carol W. Witham 2003-8-8 985 Yolo DFG Tule Ranch vernal pools. Approximately 8 miles southeast of Davis. Southeast of the junctions of County Roads 38 and 105. 4 Comment
  UCD50010  Xanthium strumarium M. Tu 1998-8-25 120 Sacramento Cosumnes River Preserve Plant Inventory - Tall Forest West. Collected from W side of small dirt road approximately 50 m N of the pump station. This road runs adjacent to the W side of the Tall Forest, along Wood Duck Slough. 1 Comment
  UCD50030  Xanthium strumarium M. Tu 1998-8-25 120 Sacramento Cosumnes River Preserve Plant Inventory - Tall Forest West. Collected from W side of small dirt road approximately 50 m N of the pump station. This road runs adjacent to the W side of the Tall Forest, along Wood Duck Slough. 1 Comment
  UCD54522  Xanthium strumarium Rachel A. Hutchinson 2006-6-8 29 Sacramento Cosumnes River Preserve. North Moyer Slough Parcel. 1 Comment
  UCD81463  Xanthium strumarium M. Wiesendanger 1927-10-1 814 Yolo Davis. University Farm. Comment
  UCR113862  Xanthium strumarium Mitch Provance 2000-6-24 2057 Riverside Riverside, Santa Ana River Wash, between the Market Street bridge and the 60 Fwy 244 Comment
  UCR120136  Xanthium strumarium Jon P. Rebman, Annette Winner, Oscar Solis 1999-9-10 5989 San Diego South Coast, North Park area of the city of San Diego, canyon just south of Juniper Street between 33rd Street and Commonwealth Ave. 140 Comment
  UCR122235  Xanthium strumarium A. C. Sanders, J. R. Ekhoff 2001-9-7 24865 San Diego Peninsular Range, Boden Canyon, tributary of Santa Ysabel Creek at E end of San Pasqual Valley; along road in upper DFG parcel 396 Comment
  UCR124031  Xanthium strumarium A. C. Sanders, Mark A. Elvin 2002-8-28 25599 Los Angeles NE end of Santa Susana Mtns., Newhall Ranch, within 10 m of fence marking west edge of Magic Mtn. amusement park 360 Comment
  UCR131932  Xanthium strumarium George K. Helmkamp 2003-8-18 8093 San Luis Obispo Central Coast, S of Arroyo Grande; along Mesa View Dr., 0.4 mi south of the junction of Cienaga and Valley View Rd. 30 Comment
  UCR134450  Xanthium strumarium George K. Helmkamp 2003-9-26 8186 San Luis Obispo Central Coast, SW edge of Oceano; border of sand dune recreation area 6 Comment
  UCR138776  Xanthium strumarium Scott D. White 1996-9-11 4507 San Bernardino Cajon Pass, Cajon Wash and adjacent foothill slopes: +- 2-3 road mi south of Hwy 138 crossing 884 Comment
  UCR145915  Xanthium strumarium Jon P. Rebman, Jeannie Gregory 2003-7-25 9432 San Diego Peninsular Range, Rancho Jamul Ecological Reserve: west of Hwy. 94, south of Jamul & north of Otay Lakes Road; pond east of Jamul Creek and old cement kiln 225 Comment
  UCR146204  Xanthium strumarium Scott D. White, Angelia Carey 2004-9-16 10766 Riverside San Jacinto Mountain foothills, San Jacinto River wash and adjacent alluvial benches; near Indian Creek confluence 534 Comment
  UCR148690  Xanthium strumarium Jon P. Rebman, Oscar Solis, Karen Rich, Robert K. Lauri 2000-2-11 6177 San Diego South Coast, San Diego Urban Canyons, N Park/Golden Hill: Cedar Ridge area, canyons 150 Comment
  UCR151595  Xanthium strumarium Beecher Crampton 1961-9-19 5976 Yolo Vaca Mountains, 6 mi west of Winters, along State Hwy 128, Putah Creek Canyon Comment
  UCR154332  Xanthium strumarium Mark A. Elvin, H. Spillman et al. 2005-4-2 4131 San Diego Peninsular Ranges, San Ysidro Mountains, E side of Otay Mountain; Marron Creek along Marron Valley Road; 2.1 km (air) N of MX; near gate to City of San Diego Preserve 274 Comment
  UCR154801  Xanthium strumarium A. C. Sanders 2005-5-27 30322 San Diego South Coast, Batiquitos Lagoon Ecological Reserve, north side of lagoon, east of the I-5 Fwy, along the trail past the nature center 30 Comment
  UCR159060  Xanthium strumarium A. C. Sanders 2005-6-24 31197 San Diego South Coast, San Dieguito Lagoon Ecological Reserve (DFG), north edge of reserve along Palm Lane (closed/abandoned) east of San Dieguito Dr. near old airport site 2 Comment
  UCR159208  Xanthium strumarium A. C. Sanders, Kelly Volansky 2005-8-31 31587 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
  UCR159290  Xanthium strumarium A. C. Sanders, Jennifer Jones 2005-6-22 31169 San Diego South Coast, Buena Vista Lagoon Ecological Reserve (DFG), Carlsbad, north side of lagoon between Carlsbad Blvd. (S-21) and the RR, south of Eaton St. 6 Comment
  UCR161411  Xanthium strumarium A. C. Sanders, T. B. Salvato 2005-9-9 31618 San Diego South Coast, Batiquitos Lagoon Ecological Reserve, Leucadia, SW side near I-5 and La Costa Ave. 6 Comment
  UCR161859  Xanthium strumarium A. C. Sanders, T. B. Salvato 2005-10-7 31763 San Diego South Coast, Agua Hedionda Lagoon Ecological Reserve, SE of the lagoon near Cannon Rd. and west of El Camino Real, SSE of Laguna Riviera Park but south of Agua Hedionda Creek 6 Comment
  UCR162808  Xanthium strumarium A. C. Sanders, T. B. Salvato 2005-10-12 31840 San Diego South Coast, Carlsbad, Carlsbad Highlands Ecological Reserve, spring in canyon c. 0.8 mile south of Cerro de la Calavera 30 Comment
  UCR167684  Xanthium strumarium T. B. Salvato, Melissa Clemons 2005-6-23 1297 Riverside Peninsular Range; Temescal Valley, Walker Canyon, 1.5 mi due east of Alberhill, N of Hwy I-15 412 Comment
  UCR170481  Xanthium strumarium George K. Helmkamp, Elizabeth Helmkamp 2005-9-1 9821 El Dorado Northern Sierra Nevada Foothills, E of Sacramento; Sand Canyon Road, 0.3 mi east of Calif. Highway 49 and Logtown Ridge 280 Comment
  UCR171642  Xanthium strumarium Margaret R. Mulligan, Joe Barth 2005-8-11 1354 San Diego Sycuan Peak Ecological Reserve (California Dept of Fish & Game). SE of Dehesa, 1 mi SW of Loveland Reservoir, 1.25 mi N of Sycuan Peak, in the Sweetwater River Watershed, at the E end of Sloan Ranch Truck Trail. San Diego Atlas Square R16 248 Comment
  UCR171747  Xanthium strumarium Margaret R. Mulligan, Joe Barth 2005-8-9 1346 San Diego Walker Canyon Ecological Reserve (California Fish & Game): between the towns of Boulevard and Jacumba on the north side of Interstate 8. Western half of riparian zone. San Diego Atlas Square T27 938 Comment
  UCR171767  Xanthium strumarium Margaret R. Mulligan, Joe Barth 2005-8-1 1294 San Diego McGinty Mountain Ecological Reserve (Calif Fish & Game). SE of city of El Cajon. SE of intersection of Willow Glen Dr and Hillsdale Rd, in bed of Sweetwater River. San Diego Atlas Square R14 119 Comment
  UCR178927  Xanthium strumarium R. G. Swinney 1989-9-16 s.n. Los Angeles San Gabriel Mtns., Glendora, Big Dalton Canyon Debris Basin 335 Comment
  UCR179330  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2006-10-10 11518 Nevada Northern Sierra Nevada Mountains Foothills, along Calif. Hwy 49, 5.8 miles NNW of Nevada City 750 Comment
  UCR189758  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2007-9-1 12861 El Dorado Foothills, northern Sierra Nevada Mountains, Happy Valley Road 3.2 miles east of its junction with CA-E-16 (just west of Sweeney's Crossing) 628 Comment
  UCR193043  Xanthium strumarium A. C. Sanders, Fred M. Roberts 2008-6-17 35483 Orange Peninsular Range; Santa Ana Mtns., Lomas de Santiago, East Loma Ridge Spur Road c. 600 m NW of Hicks Cyn. Haul Rd. 408 Comment
  UCR19497  Xanthium strumarium John C. Roos 1965-9-13 s.n. San Bernardino Mojave Desert, Victorville, Mojave River bottom 762 Comment
  UCR194972  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2007-10-28 13109 Placer Sacramento Valley, along Nicolaus Road 5.8 miles west of Lincoln 27 Comment
  UCR198245  Xanthium strumarium Dean Kelch 2007-5-18 07 .325 Yolo Yolo Causeway, 0.4 mi east of Levee Road/RR Crossing 4 Comment
  UCR201543  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2008-9-28 14169 Amador Foothills, northern Sierra Nevada Mountains, Sutter Creek Rancho Road on the north side of CA-88 and 4.2 miles southwest of the junction of CA-88 and CA-49 287 Comment
  UCR202023  Xanthium strumarium Denise Woodard, G. Nuhn 1995-8-21 s.n. Riverside Peninsular Range; Perris-Aguanga Basin, 300 acre parcel at west end of Domenigoni Valley, c. 3 miles south of Winchester on the west side of Winchester Rd. 470 Comment
  UCR202784  Xanthium strumarium Melvin M. Sweet 2007-7-31 444 San Diego City of San Diego; 1/4 mi from the end of the canyon running from Eastgate Mall (starting 1/8 mi east of the intersection of Eastgate and Genesee Ave) to the end of Roselle St., c. 2/3 mi. along the utility road. Square O8, San Diego Co. Plant Atlas. 32 Comment
  UCR209317  Xanthium strumarium A. C. Sanders 2009-11-6 37223 Los Angeles South Coast, Madrona Marsh, Torrance 24 Comment
  UCR210365  Xanthium strumarium T. B. Salvato, Billy Deane 2006-10-16 1925 Orange South Coast, Irvine, San Diego Creek flood control channel, between Michelson Drive and the 405 FWY 12 Comment
  UCR210460  Xanthium strumarium R. G. Swinney 2008-11-30 9874 Los Angeles San Gabriel Mtns., Azusa, San Gabriel River Channel, 1.2 mi. north of Foothill Blvd. at mouth of Fish Canyon 204 Comment
  UCR217339  Xanthium strumarium David Charlton 2009-9-7 s.n. Los Angeles Western Mojave Desert, Piute Ponds, Edwards Air Force Base, along shores of Ducks Unlimited ponds in SW corner of area 698 Comment
  UCR219065  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2009-8-28 15541 Sacramento Northern Sacramento Valley, along Latrobe Road, 3.2 miles west of the El Dorado County line, 1 mi. due north of Rancho Murieta 73 Comment
  UCR219094  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15578 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UCR219643  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2009-10-23 15710 El Dorado Sierra Nevada Mountains Foothills, Diamond Springs, unnamed dirt road 0.1 mile southeast of the Patterson Lake dam 520 Comment
  UCR22019  Xanthium strumarium Steve Boyd 1980-9-12 349 Riverside Gavilan Hills, Harford Springs County Park, located on the NW corner of the Gavilan plateau. Comment
  UCR236934  Xanthium strumarium Jon P. Rebman, Warren Schmidtmann & volunteers 2010-11-16 20459 San Diego Camp Pendleton; Golf Training Area; west of the Santa Margarita River, along De Luz Creek, north of Camp De Luz. Square C6 65 Comment
  UCR239920  Xanthium strumarium O. F. Clarke 2004-3-14 s.n. Riverside San Bernardino Valley Region, Riverside, Santa Ana River c. 200 m below old Salt Lake Railroad bridge 215 Comment
  UCR240727  Xanthium strumarium George K. Helmkamp, E. A. Helmkamp 2012-10-5 19965 Amador Northern Sierra Nevada Mountains Foothills, beside Sutter Creek along the Sutter Creek-Volcano Road, 0.6 mile southwest of Meadowlark Lane 421 Comment
  UCR24155  Xanthium strumarium John C. Roos 1938-8-19 2754 San Bernardino San Bernardino Valley, Loma Linda 305 Comment
  UCR243176  Xanthium strumarium Robert Hamilton 2013-8-9 s.n. San Bernardino Santa Ana River Valley, Ontario, detention basin SW of intersection of Archibald Ave. and Chino Ave., just north of Schaefer Ave. 224 Comment
  UCR255085  Xanthium strumarium Joe Barth 2011-10-25 1882 San Diego Peninsular Range, E side of Lake Murray; tip of Baltimore Dr. finger of the lake; Atlas square Q11 163 Comment
  UCR255471  Xanthium strumarium Dan S. Cooper 2014-6-26 614- 32 Los Angeles Western Transverse Range; Eastern Santa Monica Mtns., Griffith Park, north end of Fern Dell picnic area near Western Canyon Rd. 205 Comment
  UCR257638  Xanthium strumarium George K. Helmkamp, Elizabeth Helmkamp 2012-10-13 20018 Placer Sacramento Valley, Granite Bay, Folsom Lake; Park Road 1.8 miles north of the east end of Douglas Blvd. 146 Comment
  UCR258720  Xanthium strumarium R. G. Swinney 2010-6-23 13340 Los Angeles San Gabriel Mountains/Verdugo Mountains, Hansen Dam Flood Control Basin, along Big Tujunga Wash, SW of Orcas Park, Lake View Terrace 335 Comment
  UCR259551  Xanthium strumarium R. G. Swinney 2010-9-1 13671 Los Angeles San Gabriel Mountains/Verdugo Mountains, Big Tujunga Creek, under the overpass of the I-210 Fwy. and on either side, south of W. Tujunga Valley St. 338 Comment
  UCR276206  Xanthium strumarium Jim Andre 2012-10-13 23560 Inyo Northern Mojave Desert, Hwy 127 at junction of Hwy 178, just north of Shoshone 507 Comment
  UCR277143  Xanthium strumarium R. G. Swinney 2010-10-5 13962 Los Angeles San Gabriel Mountains, Placerita Cyn., Placerita Canyon Natural Area, 50-300 meters west of Nature Center 463 Comment
  UCR34363  Xanthium strumarium A. C. Sanders, N. M. Fellows 1983-10-12 4018 San Bernardino Mojave Desert/ Little San Bernardino Mtns., Big Morongo Preserve of the Nature Conservancy in Big Morongo Canyon, south of town of Morongo Valley 795 Comment
  UCR45135  Xanthium strumarium L. F. LaPre, B. Pitzer 1986-9-16 s.n. Riverside San Jacinto Wildlife Area, on levee beside the San Jacinto River, c. 1 mi east of Bridge St 436 Comment
  UCR45316  Xanthium strumarium A. C. Sanders 1986-9-12 6934 Stanislaus San Joaquin Valley, 4.5 mi. SSW of Patterson, W end Crow's Landing Rd., c. 1 mi. west of Hwy I-5 92 Comment
  UCR46572  Xanthium strumarium B. G. Pitzer, D. C. Hawks 1986-10-21 0353 Orange Peninsular Range; Santa Ana Mtns. Foothills, Lomas de Santiago, c. 10 mi east of Santa Ana, in hills N and east of South Coast Gun Club on Jeffrey Road in Hicks Canyon 183 Comment
  UCR72714  Xanthium strumarium A. C. Sanders 1992-8-23 12471 San Bernardino San Bernardino Mtns., Oak Glen, Riley's Farm on E side of Oak Glen Road c. 2 mi above Wildwood Canyon Road 1372 Comment
  UCR87208  Xanthium strumarium R. G. Swinney 1992-6-26 1729 San Bernardino San Gabriel Mtns., Cajon Wash, west of Devore Heights off ramp from I-215 and of Old Hwy 395, in wash bottom 677 Comment
  UCR88975  Xanthium strumarium K. H. Berry 1995-8-26 s.n. Kern Mojave Desert,, Desert Tortoise Research Natural Area, south of Koehn Dry Lake. NNE of California City 600 Comment
  UCR92285  Xanthium strumarium Scott D. White 1995-8-23 3577 Riverside San Jacinto Valley, San Jacinto River, just north of City of San Jacinto boundary, c. 1 mi SE of bridge at State Street 463 Comment
  UCR94804  Xanthium strumarium A. C. Sanders 1996-10-2 19599 San Bernardino San Bernardino Valley, Yucaipa, between Av. 'E' & 'F', east from Wilson Creek channel to top of slope 655 Comment
  UCR95493  Xanthium strumarium L. C. Wheeler 1966-9-21 8887 Los Angeles San Gabriel Mtns., San Gabriel Canyon, east fork at Burro Canyon 457 Comment
  UCR95724  Xanthium strumarium Lauren Raz, Steve Boyd 1996-10-23 001 Los Angeles Liebre Mtns, Entrance to Ruby Canyon on FS Rd 6N24, 1/10 mi from junction with Lake Hughes Road 610 Comment
  UCSB29362  Xanthium strumarium Boyce, Carol 1970-9-18 Santa Barbara Dunes NW of channel, Coal Oil Point Reserve, 2 miles west of Goleta Point on West Campus of UCSB Comment
  UCSB31808  Xanthium strumarium Ferren, Wayne; Whitmore, S. 1978-8-23 Santa Barbara Below East Bluffs of UCSB Main Campus, Goleta 1 Comment
  UCSB40144  Xanthium strumarium Steele, Kelly 1981-9-2 Santa Barbara More Mesa; along the Pacific Ocean, south of Atascadero Creek, adjacent to and west of Hope Ranch Park, ca. 3 km. southeast of Goleta; just south of road parallel to Atascadero Creek (Area 3a) 40 Comment
  UCSB42467  Xanthium strumarium Pierce, Lars 1982-6-8 Santa Barbara Next to fence 15 m. east of Los Carneros Rd. and 100 m. south of approach lights, western Goleta Slough 2 Comment
  UCSB52428  Xanthium strumarium Roberts, Jr., Fred 1982-9-15 Orange Dana Point; hills, 1.0 km. N Dana Hills High School; 1.9 km. NE Bench Mark 150 90 Comment
Read comments
Dec 12 2018
  UCSB53297  Xanthium strumarium Roberts, Dar 1983-7-23 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; Rocked-in-Spring, NE end of slough 1341 Comment
  UCSB53631  Xanthium strumarium Reisentz, Paul 1979-5-19 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
  UCSB56415  Xanthium strumarium Pritchett, David 1986-7-10 Santa Barbara Near Calle Real at SE portion of park, Lake Los Carneros County Park 15 Comment
  UCSB64200  Xanthium strumarium Magney, David 1987-11-15 Ventura South Coast; Ventura Quad.; T2N, R23W; San Bernardino BM; found above Main Street 6 Comment
  UCSB65243  Xanthium strumarium Magney, David; Wellonen, Cher 2001-4-5 Santa Barbara Outer South Coast Ranges; Orcutt Quad, T9N, R35W, Punta De La Laguna, San Bernardino BM; between Solomon & Black Rds(~280-ac site); N of SR1, S of Santa Maria Airport; W of Orcutt, Plot/Trench#13/Stop#15 ~5000 ft WNW of Solomon Rd bridge & ~940 ft NNE SR1 54 Comment
  UCSB7382  Xanthium strumarium Ballard 1954-10-30 Riverside 3 miles south of Men's Reform School, (Chino Institute), Chino 198 Comment
  UCSB7383  Xanthium strumarium Philbrick, Ralph 1954-10-24 Riverside 4 miles south of Chino Institute Comment
  BLMAR415  Xanthium strumarium Jennifer Wheeler 2007-8-22 415 Humboldt South Spit, East side of road, near ecotone between atriplex and dune swale Comment
  CAS-BOT-BC136276  Xanthium strumarium S. F. Blake 1934-6-27 11773 Tuolumne Yosemite Junction 355 Comment
  CAS-BOT-BC136277  Xanthium strumarium Eugene Carter 1974-9-2 899 Trinity Trinity River one mile east of the North Fork. 432 Comment
  CAS-BOT-BC136305  Xanthium strumarium Ernest C. Twisselmann 1970-10-9 17521 Fresno Wathan Creek at the Parkfield Road. 594 Comment
  CAS-BOT-BC136306  Xanthium strumarium Ernest C. Twisselmann 1970-10-9 17521 Fresno Wathan Creek at the Parkfield Road. 594 Comment
  CAS-BOT-BC136307  Xanthium strumarium J. H. Thomas 1960-8-30 8858 Glenn About 3 miles north of Glann. Comment
  CAS-BOT-BC136309  Xanthium strumarium J. W. Blankinship 1928-8-12 s.n. Lake Kelseyville Comment
  CAS-BOT-BC136315  Xanthium strumarium George Oberlander 1949-7-24 268 San Mateo Marsh about Upper Crystal Spr. [Spring] Lake Comment
  CAS-BOT-BC136316  Xanthium strumarium L. R. Abrams 1903-9-27 4023 Monterey Salinas River, Nefonset [Neponset] Comment
  CAS-BOT-BC136322  Xanthium strumarium Brandegee unspecified s.n. Unknown unspecified Comment
  CAS-BOT-BC136324  Xanthium strumarium Henry M. Pollard 1956-10-7 s.n. Siskiyou Klamath River bar on Spink's Ranch at Roger's Creek, Somes Bar. Comment
  CAS-BOT-BC136325  Xanthium strumarium S. F. Blake 1934-6-27 11773 Tuolumne Yosemite Junction 355 Comment
  CAS-BOT-BC382121  Xanthium strumarium John Thomas Howell 1893-7-1 30051 A Amador 3 miles from Pine Grove on road to Jackson Comment
  CAS-BOT-BC382123  Xanthium strumarium Doris K. Kildale 1926-8-8 2467 Humboldt mouth of Bull Creek Comment
  CAS-BOT-BC382125  Xanthium strumarium Philip A. Munz 1949-10-9 14367 Inyo Tecopa, Mojave Desert 426 Comment
  CAS-BOT-BC383678  Xanthium strumarium John Thomas Howell 1959-9-20 34690 Butte 5 miles ne. of Oroville on Feather River Highway Comment
  CAS-BOT-BC383679  Xanthium strumarium A. A. Heller 1926-9-10 14334 Butte Near the Sacramento River on the Chico-Orland highway Comment
  CAS-BOT-BC383680  Xanthium strumarium A. A. Heller 1926-9-10 14334 Butte Near the Sacramento River on the Chico-Orland highway Comment
  CAS-BOT-BC383681  Xanthium strumarium A. A. Heller 1914-7-31 11629 Butte Chico-Hamilton road, Sacramento Valley about 6 miles northwest of and from Chico Comment
  CAS-BOT-BC383683  Xanthium strumarium Walter Knight; Frank Almeda; Joanne Dean; Bob Doyle 1978-10-11 s.n. Contra Costa Browns Island. South Landing Comment
  CAS-BOT-BC383684  Xanthium strumarium Walter Knight 1965-9-7 1170 Contra Costa Antioch sand dunes Comment
  CAS-BOT-BC383686  Xanthium strumarium D. E. Breedlove 1969-10-18 16705 Contra Costa On Deer Hill Road near the junction with Happy Valley Road, Lafayette Comment
  CAS-BOT-BC383687  Xanthium strumarium Frank W. Gould 1939-2-2 561 Contra Costa Near Martinez Comment
  CAS-BOT-BC383688  Xanthium strumarium Ernest C. Twisselmann 1961-10-30 6647 Kern Mohave-Randsburg Region. Fremont Valley: dry wash in the farmlands 2.5 miles south of Cantil 594 Comment
  CAS-BOT-BC383689  Xanthium strumarium Ernest C. Twisselmann 1961-10-30 6647 Kern Mohave-Randsburg Region. Fremont Valley: dry wash in the farmlands 2.5 miles south of Cantil 594 Comment
  CAS-BOT-BC383690  Xanthium strumarium Ernest C. Twisselmann 1954-7-20 1469 Kern Temblor Range and the Western San Joaquin Valley. Buena Vista Slough: 6 miles southeast of Lost Hills 77 Comment
  CAS-BOT-BC383691  Xanthium strumarium Ernest C. Twisselmann 1954-7-20 1469 Kern Temblor Range and the Western San Joaquin Valley. Buena Vista Slough: 6 miles southeast of Lost Hills. (Celay Pool) 77 Comment
  CAS-BOT-BC383692  Xanthium strumarium Ernest C. Twisselmann 1964-9-29 10257 Kern San Joaquin Valley, Kern National Wildlife Refuge. Canal along the east side of the Refuge 76 Comment
  CAS-BOT-BC383693  Xanthium strumarium Ernest C. Twisselmann 1964-9-29 10257 Kern San Joaquin Valley, Kern National Wildlife Refuge. Canal along the east side of the Refuge 76 Comment
  CAS-BOT-BC383694  Xanthium strumarium Ernest C. Twisselmann 1967-9-19 13739 Kern Mojave Desert, Mojave-Randsburg Region. Horse Canyon Well on the west side of Indian Wells Valley 1143 Comment
  CAS-BOT-BC383696  Xanthium strumarium Paul Leskinen 1972-8-20 1323 Kern NE of Lake Isabella. Southern Sierra Nevada 792 Comment
  CAS-BOT-BC383697  Xanthium strumarium John Thomas Howell 1962-9-21 38672 Kern Entrance to Kern River Canyon 213 Comment
  CAS-BOT-BC383699  Xanthium strumarium John Thomas Howell 1970-11-8 47518 Kern Lake Isabella. 4 miles from South Fork Kern River bridge on road from Weldon to Kernville 792 Comment
  CAS-BOT-BC383700  Xanthium strumarium John Thomas Howell 1970-9-25 47473 Kern Strand-bed of Lake Isabella (east side of north arm), about 5 miles south of Kernville 792 Comment
  CAS-BOT-BC383701  Xanthium strumarium John Thomas Howell 1970-9-25 47473 Kern Strand-bed of Lake Isabella (east side of north arm), about 5 miles south of Kernville 792 Comment
  CAS-BOT-BC383702  Xanthium strumarium Ernest C. Twisselmann 1965-7-29 11373 Kern Kern River at the upper town limits of Kernville 815 Comment
  CAS-BOT-BC383703  Xanthium strumarium Noraine Meng 1966-10-30 353 Kern Camp Area 9, east side of the north fork of Lake Isabella 731 Comment
  CAS-BOT-BC383709  Xanthium strumarium Peter H. Raven; Henry J. Thompson 1959-9-6 14399 Los Angeles Santa Monica Mountains (Lat. N. 34 deg. ; Long. 118 deg. to 119 deg. W.). Along Malibu Creek near its mouth 12 Comment
  CAS-BOT-BC383710  Xanthium strumarium Cecil Hart 1922-10-6 s.n. Los Angeles Howard & Smith's nursery, Los Angeles Comment
  CAS-BOT-BC383712  Xanthium strumarium John Thomas Howell 1958-8-17 34592 Madera Coarse Gold Comment
  CAS-BOT-BC383714  Xanthium strumarium C. E. Wells 1958-10-1 s.n. Madera Sierra Nevada. Coarse Gold Comment
  CAS-BOT-BC383715  Xanthium strumarium Catherine Best 1980-11-16 s.n. Marin Along Tiburon Blvd. west of the marsh Comment
  CAS-BOT-BC383716  Xanthium strumarium Phyllis Ellman 1973-10-3 s.n. Marin Old St. Hilary's Preserve, Tiburon Comment
  CAS-BOT-BC383717  Xanthium strumarium John Thomas Howell 1943-9-19 19330 Marin Kentfield Comment
  CAS-BOT-BC383718  Xanthium strumarium John Thomas Howell 1945-9-2 21450 Marin San Rafael Comment
  CAS-BOT-BC383719  Xanthium strumarium John Thomas Howell 1947-10-19 24190 Marin Strand of Alpine Lake Comment
  CAS-BOT-BC383720  Xanthium strumarium John Thomas Howell 1946-9-8 22995 Marin Along Redwood Highway just north of San Rafael Comment
  CAS-BOT-BC383721  Xanthium strumarium Eric Walther 1922-10-10 s.n. Marin San Rafael Comment
  CAS-BOT-BC383724  Xanthium strumarium Clare R. Wheeler 1981-5-22 2224 Mendocino Hwy. 175 ca. 1/2 mile E of Hopland 148 Comment
  CAS-BOT-BC383725  Xanthium strumarium Clare R. Wheeler 1981-9-17 2853 Mendocino Garcia River bed ca. 4 mi. E. of Pt. Arena. Along section of river between Eureka Hill Road and Buckridge Road 30 Comment
  CAS-BOT-BC383726  Xanthium strumarium Clare R. Wheeler; Gladys L. Smith 1981-8-3 2740 Mendocino Gualala River gravel terrace about 4 miles E. of river mouth 15 Comment
  CAS-BOT-BC383727  Xanthium strumarium Gladys L. Smith 1983-9-6 8302 Mendocino Along shoulder of Walker Road, 3.2 km. south of Willits, off Rte. 101 426 Comment
  CAS-BOT-BC383728  Xanthium strumarium Gladys L. Smith 1983-9-5 8286 Mendocino Above Navarro River, Hendy Grove State Park 45 Comment
  CAS-BOT-BC383729  Xanthium strumarium Gladys L. Smith 1982-6-29 7513 Mendocino Bar of South Fork Eel River Comment
  CAS-BOT-BC383733  Xanthium strumarium L. R. Abrams 1920-9-30 7776 Merced Merced River, [Merced] Comment
  CAS-BOT-BC383734  Xanthium strumarium L. R. Abrams 1915-7-27 5303 Merced Eastern base of Pecheco [Pacheco] Pass Comment
  CAS-BOT-BC383736  Xanthium strumarium W. R. Dudley 1903-9-27 s.n. Monterey Near Castroville Comment
  CAS-BOT-BC383737  Xanthium strumarium E. K. Abbott 1889-8-1 s.n. Monterey Unspecified Comment
  CAS-BOT-BC383738  Xanthium strumarium Beatrice F. Howitt 1963-9-30 1774 Monterey Monterey Peninsula. In the dry Salinas River bed near the bridge on Davis Road about 1/2 mi. from Reservation Rd. & west of Salinas Comment
  CAS-BOT-BC383739  Xanthium strumarium R. E. Frenkel 1963-10-27 301 Napa In the vinyard north of Oakville Cross Road Comment
  CAS-BOT-BC383740  Xanthium strumarium Peter H. Raven 1951-9-9 3896 Napa Near Slaughterhouse Pt., Napa River 0 Comment
  CAS-BOT-BC383742  Xanthium strumarium Gordon H. True 1966-10-14 3333 Nevada Dry Creek, just east of Yuba Co. line & about 1/2 mile below Spenceville (site) 95 Comment
  CAS-BOT-BC383743  Xanthium strumarium Gordon H. True 1961-10-5 286 Nevada G. H. True Ranch, 7 miles south-west of Grass Valley on McCourtney Road 548 Comment
  CAS-BOT-BC383746  Xanthium strumarium Carl B. Wolf 1932-7-7 3836 Orange Bryant Ranch, Bixby Ave., 100 ft. W. of Hansen Rd. 100 ft. W. of S.E. corner of N.E. 40 of N.E. 160 of Sect. 34 Comment
  CAS-BOT-BC383747  Xanthium strumarium John Thomas Howell 1927-7-27 2854 Orange Santa Ana River bottom, Santa Ana Canon [Canyon] 152 Comment
  CAS-BOT-BC383748  Xanthium strumarium M. A. Bradshaw 1901-10-1 s.n. Orange Orange Comment
  CAS-BOT-BC383749  Xanthium strumarium John Thomas Howell 1959-9-21 34751 Plumas Sand bars of N. Fk. of Feather River near Belden 701 Comment
  CAS-BOT-BC383752  Xanthium strumarium Steve Castagnoli; Greg de Nevers; R. Doug Stone 1980-9-12 295 c San Bernardino Kingston Range. At Horse Thief Springs 1414 Comment
  CAS-BOT-BC383767  Xanthium strumarium Evelina Cannon 1894-9-10 s.n. San Francisco Presidio, San Francisco Comment
  CAS-BOT-BC383771  Xanthium strumarium Ernest C. Twisselmann 1954-7-18 1438 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Choice Valley: 1 1/2 miles east of Palo Prieta Summit 579 Comment
  CAS-BOT-BC383772  Xanthium strumarium Ernest C. Twisselmann 1954-7-18 1438 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Choice Valley: 1 1/2 miles east of Palo Prieta Summit 579 Comment
  CAS-BOT-BC383773  Xanthium strumarium Ernest C. Twisselmann 1958-8-27 4742 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Grant's Lake, eastern San Luis Obispo County 576 Comment
  CAS-BOT-BC383774  Xanthium strumarium Ernest C. Twisselmann 1958-8-27 4742 San Luis Obispo Temblor Range and the Western San Joaquin Valley. Grant's Lake, eastern San Luis Obispo County 576 Comment
  CAS-BOT-BC383775  Xanthium strumarium Ernest C. Twisselmann 1967-9-8 13674 San Luis Obispo Temblor Range and the Western San Joaquin Valley. T. Franklin Twisselmann residence, Choice Valley 640 Comment
  CAS-BOT-BC383776  Xanthium strumarium Ernest C. Twisselmann 1967-9-8 13674 San Luis Obispo Temblor Range and the Western San Joaquin Valley. T. Franklin Twisselmann residence, Choice Valley 640 Comment
  CAS-BOT-BC383778  Xanthium strumarium Clare B. Hardham 1956-10-14 1461 San Luis Obispo Santa Lucia Mountains. Oak Flat Comment
  CAS-BOT-BC383780  Xanthium strumarium Henry M. Pollard 1957-11-1 s.n. Santa Barbara Near mouth of Jalama Creek (between Pt. Conception & Pt. Arguello) Comment
  CAS-BOT-BC383781  Xanthium strumarium Henry M. Pollard 1958-11-25 s.n. Santa Barbara Summerland Comment
  CAS-BOT-BC383782  Xanthium strumarium Henry M. Pollard 1958-11-25 s.n. Santa Barbara Summerland Comment
  CAS-BOT-BC383783  Xanthium strumarium Henry M. Pollard 1958-12-19 s.n. Santa Barbara Stanwood Drive near Sheffield Reservoir, Santa Barbara Comment
  CAS-BOT-BC383788  Xanthium strumarium John Thomas Howell 1952-10-19 28855 Santa Clara Near Sargent Comment
  CAS-BOT-BC383789  Xanthium strumarium John Thomas Howell 1952-10-19 28855 Santa Clara Along highway at edge of field, near Sargent Comment
  CAS-BOT-BC383790  Xanthium strumarium Ira L. Wiggins 1985-9-28 22300 Santa Clara Lower bank of San Francisquito Creek, south side of bed, at Pope Street bridge, Palo Alto Comment
  CAS-BOT-BC383791  Xanthium strumarium Ira L. Wiggins 1972-8-30 21933 Santa Clara Dry bed of Lagunita, Stanford University Campus Comment
  CAS-BOT-BC383794  Xanthium strumarium M. E. Clark 1909-10-9 s.n. Santa Clara Santa Cruz Mountain Peninsula. End of Embarcadero Road, Palo Alto Comment
  CAS-BOT-BC383795  Xanthium strumarium E. L. H. Knoche 1929-9-2 s.n. Santa Clara North San Jose Comment
  CAS-BOT-BC383799  Xanthium strumarium Alice Eastwood 1920-8-28 s.n. Solano Cordelia Comment
  CAS-BOT-BC383802  Xanthium strumarium Walter Knight; Irja Knight 1963-8-31 171 Sonoma Cor. Todd Rd & freeway Comment
  CAS-BOT-BC383803  Xanthium strumarium F. G. Krauss 1893-10-16 s.n. Sonoma Petaluma Valley Comment
  CAS-BOT-BC383805  Xanthium strumarium T. C. Fuller 1958-10-17 1445 Sutter Channel side/west levee, Sutter By-pass, 4 mi W/Knights Landing Comment
  CAS-BOT-BC383806  Xanthium strumarium A. C. Perrin, Jr. 1958-8-29 s.n. Sutter Unspecified Comment
  CAS-BOT-BC383807  Xanthium strumarium A. C. Perrin, Jr. 1958-9-10 s.n. Sutter Unspecified Comment
  CAS-BOT-BC383810  Xanthium strumarium Lowell Ahart 1982-9-9 3773 Sutter About 1/8 mile south of the Myers home, Myers Ranch, Sutter Buttes 50 Comment
  CAS-BOT-BC383811  Xanthium strumarium T. C. Fuller 1958-10-17 s.n. Sutter Sutter By-pass, 4 mi. w. of Knights Landing Comment
  CAS-BOT-BC383812  Xanthium strumarium T. C. Fuller 1958-10-17 s.n. Sutter 4 mi. w. of Knights Landing, Sutter By-pass Comment
  CAS-BOT-BC383813  Xanthium strumarium T. C. Fuller 1958-10-11 1445 Sutter Channel side/west levee, Sutter By-pass, 4 mi. W/Knights Landing Comment
  CAS-BOT-BC383820  Xanthium strumarium Ernest C. Twisselmann; Jack Zaninovich 1969-8-30 15991 Tulare Sierra Nevada, Kern Plateau. Spanish Need [Needle] Road, 0.8 mile south of Chimney Creek bridge 1600 Comment
  CAS-BOT-BC383821  Xanthium strumarium J. Rockwell 1969-12-2 69 -0668 Tulare Horse Creek south of Lake Kaweah Comment
  CAS-BOT-BC383822  Xanthium strumarium Mrs. W. J. Williamson 1919-7-28 331 Tuolumne Mormon Creek 213 Comment
  CAS-BOT-BC383823  Xanthium strumarium Ira L. Wiggins 1972-9-23 21981 Tuolumne Shoulders of Highway 108, 1.9 mi NE of Long Barn 1554 Comment
  CAS-BOT-BC383824  Xanthium strumarium Ira L. Wiggins 1972-9-17 21939 Tuolumne Along Meadow Drive, Twain Harte Comment
  CAS-BOT-BC383825  Xanthium strumarium Henry M. Pollard 1945-10-27 s.n. Ventura Ventura River Basin. Ventura River bed, near mouth of river Comment
  CAS-BOT-BC383827  Xanthium strumarium Henry M. Pollard 1947-12-1 s.n. Ventura Ventura River Basin. Ventura Oil Fields Comment
  CAS-BOT-BC383829  Xanthium strumarium Henry M. Pollard 1947-12-1 s.n. Ventura Ventura River Basin. Ventura Oil Fields Comment
  CAS-BOT-BC383830  Xanthium strumarium Henry M. Pollard 1947-11-23 s.n. Ventura Ventura River Basin. Mouth of Ventura River Comment
  CAS-BOT-BC383831  Xanthium strumarium Henry M. Pollard 1960-7-28 s.n. Ventura Ventura River Basin. McAndrew Rd., Ojai Valley Comment
  CAS-BOT-BC383834  Xanthium strumarium Peter H. Raven; Henry J. Thompson 1959-10-4 14591 A Ventura Santa Monica Mountains (Lat. N. 34 deg. ; Long. 118 deg. to 119 deg. W.). Bed of Calleguas Creek 1 mile north of Camarillo State Hospital 18 Comment
  CAS-BOT-BC383836  Xanthium strumarium M. P. Bellue 1931-9-24 s.n. Yolo West end of Yolo Causeway Comment
  CAS-BOT-BC383837  Xanthium strumarium M. P. Bellue 1931-9-24 s.n. Yolo Near Yolo Causeway Comment
  CAS-BOT-BC385611  Xanthium strumarium Cherie L. Wetzel 1969-8-18 1000 Alameda Niles Canyon and Vicinity; By dam at eastern end of Niles Canyon Comment
  CAS-BOT-BC385612  Xanthium strumarium Cherie L. Wetzel 1969-8-28 1020 Alameda Niles Canyon and Vicinity; Alameda Creek at Mission Blvd. Comment
  CAS-BOT-BC385613  Xanthium strumarium Cherie L. Wetzel 1968-11-19 528 Alameda Niles Canyon and Vicinity; By dam west of strawberry fields. Comment
  CAS-BOT-BC385616  Xanthium strumarium Volney Rattan 1880-8-1 s.n. Alameda Alameda Comment
  CAS-BOT-BC385617  Xanthium strumarium Paul F. Covel 1937-9-10 648 Alameda Oak. Hills Comment
  CAS-BOT-BC385618  Xanthium strumarium M. S. Jussel 1935-12-7 s.n. Alameda 16 Street Station, Oakland Comment
  CAS-BOT-BC385619  Xanthium strumarium M. S. Jussel 1935-12-7 s.n. Alameda 16th Street Station, Oakland Comment
  CAS-BOT-BC385874  Xanthium strumarium Mary Strong Clemens 1920-9-13 s.n. Amador Jackson, Amador County 396 Comment
  CAS-BOT-BC385875  Xanthium strumarium Geo. Hansen 1893-7-1 700 Amador Middle Fork 609 Comment
  CAS-BOT-BC385876  Xanthium strumarium Ernest C. Twisselmann 1954-9-1 1540 Kings Old Tulare Lake Bed, 3 miles W of South Lake Farms, Shandon 57 Comment
  CAS-BOT-BC385877  Xanthium strumarium Ernest C. Twisselmann 1954-9-1 1540 Kings Old Tulare Lake Bed, 3 miles W of South Lake Farms, Shandon 57 Comment
  CAS-BOT-BC494121  Xanthium strumarium William Harnach 2000-8-23 987 Sierra Sierra Valley. 1 mi N of Loyalton on Co. Road A-24 1499 Comment
  CAS-BOT-BC95720  Xanthium strumarium Doreen Smith 2002-9-1 s.n. Marin Nicasio Reservoir. Comment
  CDA43144  Xanthium strumarium David J. Keil 1991-10-26 22693 Santa Barbara Vandenberg Air Force Base, North Base. Barka Slough, near eastern boundary of base along San Antonio Creek. 0 Comment
  CDA9004  Xanthium strumarium T. C. Fuller 1958-10-17 1704 Sutter Channel side of west levee Sutter By-pass, 4 miles east of Knights Landing. 0 Comment
  CDA9005  Xanthium strumarium T. C. Fuller 1965-9-14 14105 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9006  Xanthium strumarium T. C. Fuller 1965-9-14 14104 a Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9007  Xanthium strumarium T. C. Fuller 1965-9-14 14104 b Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9011  Xanthium strumarium M. K. Bellue 1931-9-24 Yolo Near Yolo Causeway. 0 Comment
  CDA9012  Xanthium strumarium G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4365 Yolo East side of Yolo By-pass under railroad tressel, north of Highway 16 and I-5, approximately 5 miles east of Woodland. 0 Comment
  CDA9014  Xanthium strumarium T. C. Fuller 1965-9-14 14105 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9016  Xanthium strumarium T. C. Fuller 1958-10-17 1707 Sutter Channel side of west levee Sutter By-pass, 4 miles east of Knights Landing. 0 Comment
  CDA9018  Xanthium strumarium G. D. Barbe, T. C. Fuller, P. W. Michael 1989-8-29 4362 Monterey Near abandoned barn on Jolon-King City Road, 2.5 miles south of King City. 0 Comment
  CDA9019  Xanthium strumarium T. C. Fuller 1965-9-14 14102 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9021  Xanthium strumarium T. C. Fuller 1958-10-17 1705 Sutter Channel side of west levee Sutter By-pass, 4 miles east of Knights Landing. 0 Comment
  CDA9022  Xanthium strumarium G. D. Barbe, T. C. Fuller, P. W. Michael 1989-8-29 4362 Monterey Near abandoned barn on Jolon-King City Road, 2.5 miles south of King City. 0 Comment
  CDA9023  Xanthium strumarium G. D. Barbe, T. C. Fuller, P. W. Michael 1989-8-29 4362 Monterey Near abandoned barn on Jolon-King City Road, 2.5 miles south of King City. 0 Comment
  CDA9025  Xanthium strumarium T. C. Fuller 1965-9-14 14104 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9026  Xanthium strumarium T. C. Fuller 1965-9-14 14105 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9027  Xanthium strumarium G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4364 Yolo East side of Yolo By-pass under railroad tressel, north of Highway 16 and I-5, approximately 5 miles east of Woodland. 0 Comment
  CDA9030  Xanthium strumarium T. C. Fuller 1965-9-14 14102 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9031  Xanthium strumarium T. C. Fuller 1958-10-17 1706 Sutter Channel side of west levee Sutter By-pass, 4 miles east of Knights Landing. 0 Comment
  CDA9034  Xanthium strumarium T. C. Fuller 1965-9-14 14103 Sutter On the drying west bank of Sutter Bypass, 6 miles southeast of Robbins. 0 Comment
  CDA9035  Xanthium strumarium T. C. Fuller 1958-10-17 1445 Sutter Channel side of west levee Sutter By-pass, 4 miles east of Knights Landing. 0 Comment
  HSC12017  Xanthium strumarium Wilbur Peterson 1970-10-31 94 Humboldt Scotia bluffs, edge of Eel River. Comment
  HSC25958  Xanthium strumarium Thomas W. Nelson 1970-10-31 286 Humboldt Eel River near N end of the Scotia Bluff. Comment
  HSC37690  Xanthium strumarium R. Sutherland 1976-8-13 31 .13876 Humboldt In mouth of Redwood Creek at South Fork of Eel River. 88 Comment
  HSC6334  Xanthium strumarium Larry Berti 1968-6-29 Tehama Red Bank Creek where the creek crosses Paskenta Rd. Comment
  HSC6335  Xanthium strumarium T. F. Newman 1965-10-9 65563 Yuba Carnes Ranch, 9 mi. N of Marysville. Comment
  HSC86152  Xanthium strumarium Gladys L. Smith 1983-9-5 8286 Mendocino Above Navarro River, Hendy Woods State Park. 45 Comment
  HSC86153  Xanthium strumarium Gladys L. Smith 1983-9-6 8302 Mendocino Along shoulder of Walker Rd., 3.2 km. S of Willits, off Rte. 101 427 Comment
  JEPS113953  Xanthium strumarium W. and N. Harnach 2000-8-23 987 Sierra Sierra Valley 1 mile north of Loyalton, CA. on Co. Road A-24 Comment
  JEPS26182  Xanthium strumarium Peter H. Raven and Henry J. Thompson 1959-9-6 14399 Los Angeles along Malibu Creek (near mouth Malibu Creek); Santa Monica Mountains, Malibu Creek 12 Comment
  JEPS41259  Xanthium strumarium R. F. Hoover 1938-9-23 3856 Solano in salt marsh on Benicia-Cordelia road Comment
  JEPS41266  Xanthium strumarium W. L. Jepson 1936-8-12 17876 Humboldt South Fork Eel River at Philipsville; South Fork Eel River, Philipsville Comment
  JOTR01296  Xanthium strumarium Cole, James E. 1941-11-2 936 Riverside Joshua Tree National Park. LOWER SPRING ELEVATION; SMITH WATER CANYON Comment
  JROH1318  Xanthium strumarium John H. Thomas 1964-11-29 10536 San Mateo Jasper Ridge Biological Preserve, Stanford University; W end of Searsville Dam Comment
  LA200272  Xanthium strumarium T. A. Geissman; 1967-9-20 sn Los Angeles Santa Ynez Canyon at Sunset Blvd Comment
  OBI25765  Xanthium strumarium David J. Keil 1980-9-17 14204 San Luis Obispo Cyn Ranch on Shell Crk rd 6 mi N of hwy 58. Plants coll from zone around small artificial reservoir Comment
  OBI29952  Xanthium strumarium Jim Pollard 1972-8-28 10 San Luis Obispo Laguna Lake Comment
  OBI38417  Xanthium strumarium Eric Wise 1981-10-23 1318 San Luis Obispo Sinton South Pond on Shell Crk rd 6.4 mi N of hwy 58 Comment
  OBI38418  Xanthium strumarium Eric Wise 1981-9-29 1192 San Luis Obispo Orcutt Rd, 2.3 mi S of Johnson Ave, SLO Comment
  OBI38419  Xanthium strumarium Eric Wise 1981-10-23 1369 San Luis Obispo Tepesquet vinyard ponds, 4-6 mi S of Shandon on San Juan rd Comment
  OBI38420  Xanthium strumarium Eric Wise 1981-9-17 1180 San Luis Obispo Painted Rock-Soda lake Comment
  OBI38421  Xanthium strumarium Eric Wise 1981-9-17 1140 San Luis Obispo Salinas river at hwy 58 Comment
  OBI38422  Xanthium strumarium Eric Wise 1981-9-17 1109 San Luis Obispo 0.9 mi N of Santa Margaria on El Camino Real, across from Union 76 Plant Comment
  OBI38423  Xanthium strumarium Eric Wise 1981-8-7 1029 San Luis Obispo Intersection of hwy 58 and San Juan Crk Comment
  OBI38425  Xanthium strumarium Eric Wise 1981-6-27 733 San Luis Obispo Alamo Crk near Twichell Res Comment
  OBI5320  Xanthium strumarium T. C. Fuller 1965-9-14 14103 Sutter On drying W bank of Sutter Bypass, 6 mi SE of Robbins Comment
  OBI72452  Xanthium strumarium M. Wetherwax & E. L. Painter, E. L. Painter 2002-9-4 Cr- 366 San Luis Obispo Camp Roberts. Along Sulphur Spring Rd, near Pipeline corossing. UTMs (NAD27) zone 10S, 705117E, 3958435N 251 Comment
  OBI7978  Xanthium strumarium Kurt R. Neisess 1976-1-2 s.n. Orange Along Skyline Dr in Fullerton Comment
  PGM5526  Xanthium strumarium Beatrice F Howitt 1963-9-30 1774 Monterey Salinas Valley, Salinas River bed @ Davis Rd Bridge, 0.5 mi from Reservation Rd Comment
  PGM765  Xanthium strumarium Allison & Lind 1970-7-17 Monterey Santa Lucia Mountains, Carmel Valley Rancho San Carlos Rd, Vic Carmel Valley Golf Course Comment
  POM129614  Xanthium strumarium W. J. Williamson 1919-7-28 331 Tuolumne Mormon Creek. 213 Comment
  POM14306  Xanthium strumarium P. A. Munz 1922-10-15 6543 Los Angeles Claremont. 366 Comment
  POM153491  Xanthium strumarium P. A. Munz, I. M. Johnston 1928-9-4 11133 Los Angeles south side of Newhall Tunnel Comment
  POM184070  Xanthium strumarium P. A. Munz 1932-8-31 12811 Los Angeles Playa del Rey Comment
  POM195492  Xanthium strumarium A. A. Heller 1926-9-10 14334 Santa Clara Moist clay in the bed of a winter overflow stream near the Sacramento River on the Chico-Orland Hwy Comment
  POM260658  Xanthium strumarium M. French Gilman 1940-6-28 4290 Inyo Cottonwood Canyon, Death Valley. 1220 Comment
  POM289964  Xanthium strumarium Arthur L. Cohen 1934-5-13 391 Kern Kern River Park 122 Comment
  POM289967  Xanthium strumarium Lyman Benson 1929-9-20 1928 Lake Kelseyville, N Coast Mtn Range, Clear Lake. 427 Comment
  POM289971  Xanthium strumarium Lyman Benson 1934-9-18 6201 Lake Kelseyville; Mt. Range: Middle N. Coast; Watershed: Clear Lake 427 Comment
  POM289972  Xanthium strumarium Lyman Benson 1935-10-6 7501 Kern Kern Canyon, Greenhorn Mountains. Kern River Watershed. 518 Comment
  POM318726  Xanthium strumarium Patricia Wilder 1962-9-3 2386 Contra Costa Walnut Creek, on Stanley Court. Coast mtn range, San Francisco Bay watershed. 42 Comment
  POM47479  Xanthium strumarium Mary F. Spencer 1919-10-17 1643 San Diego San Diego. 91 Comment
  POM47589  Xanthium strumarium I. M. Johnston 1924-8-29 s.n. Orange 1 mi. N of Los Alamitos. Comment
  RSA0105858  Xanthium strumarium Alan Romspert 2000-7-28 s.n. San Bernardino Santa Ana Riverbed & Jtn. RIX, outflow transect. Comment
  RSA124894  Xanthium strumarium Allan G. O'Berg Jr. 1955-10-1 s.n. Fresno 2.1 mi. S. of San Joaquin on w. side of Colorado Rd. along edge of cultivated cotton field. Comment
  RSA12645  Xanthium strumarium C. B. Wolf 1934-8-16 6054 Los Angeles peat land on Bryant Ranch east of Long Beach. 700 ft. east of center of sect. 34; 950 ft. So. of No. line of Same. 6 Comment
  RSA133438  Xanthium strumarium P. H. Raven, A. Thompson 1959-9-6 14399 Los Angeles Near mouth of Malibu Creek. Santa Monica Mountains. 12 Comment
  RSA133831  Xanthium strumarium H. J. Thompson, P. H. Raven 1954-7-9 4356 Ventura Calleguas Creek 1 mile north of Camarillo State Hospital. 18 Comment
  RSA140811  Xanthium strumarium John H. Thomas 1960-6-25 8790 San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street. 8 Comment
  RSA17975  Xanthium strumarium C. B. Wolf 1927-7-28 704 Merced 2 miles W of Los Banos, San Joaquin Valley Comment
  RSA187671  Xanthium strumarium R. F. Thorne 1966-9-14 36668 Los Angeles inner edge of dunes at Little Harbor 3 Comment
  RSA187686  Xanthium strumarium R. F. Thorne 1966-9-16 36706 Los Angeles Santa Catalina Island. Hillside margin of lower reservoir w of Air Strip 442 Comment
  RSA223992  Xanthium strumarium Cherie L. Wetzel 1969-8-18 1000 Alameda Niles Canyon and vicinity; Alameda Creek at east end of Niles Canyon by dam. Comment
  RSA277644  Xanthium strumarium Richard L. Zembal 1974-10-20 107 Inyo Wildhorse Spg. Plants of the China Lake Naval Weapons Center. 2009 Comment
  RSA277645  Xanthium strumarium Richard L. Zembal 1978-6-18 108 Inyo 3/4 miles N of Coso Hot Springs. 1104 Comment
  RSA302009  Xanthium strumarium J. R. Shevock 1972-9-16 2257 Los Angeles Along Malibu Creek, Malibu Canyon. 305 Comment
  RSA351762  Xanthium strumarium P. M. Peterson 1982-6-30 653 Inyo Death Valley National Monument; Cottonwood Mountains. Cottonwood Canyon. 853 Comment
  RSA441183  Xanthium strumarium M. B. Dunkle 1936-8-22 4856 Humboldt Williams Grove, Eel River. 213 Comment
  RSA441189  Xanthium strumarium Robert Gustafson 1980-8-29 1864 Los Angeles Ballona Wetlands, Area 3. Between Lincoln Blvd, Ballona Creek Channel and Marina Del Rey Channel. Comment
  RSA441190  Xanthium strumarium F. R. Fosberg 1930-6-23 444 Los Angeles Del Rey. 0 Comment
  RSA441197  Xanthium strumarium F. R. Fosberg 1931-10-11 7231 Ventura Sherwood Lake, Santa Monica Mountains. 300 Comment
  RSA46831  Xanthium strumarium Doris K. Kildale 1926-8-8 2467 Humboldt River [Rav?] - Bull Creek. Comment
  RSA50481  Xanthium strumarium P. A. Munz, G. R. Campbell 1949-10-9 14367 Inyo Tecopa, 427 Comment
  RSA5764  Xanthium strumarium A. A. Heller 1926-9-10 14334 Santa Clara Moist clay in the bed of a winter overflow stream near the Sacramento River on the Chico-Orland Hwy Comment
  RSA5884  Xanthium strumarium C. B. Wolf 1932-9-16 4102 Los Angeles West of State Highway at SE corner of Pacific Western Oil Co. lease in 17 acre portion 2 Comment
  RSA5940  Xanthium strumarium C. B. Wolf 1932-7-7 3836 Orange Bryant Ranch ; On Bixby Ave. 2/10 mi. W of Hansen Road. (2/10 mi. W of SE corner of NE 1/4 of NE 1/4 of sec. 34 T4S R11W) 9 Comment
  RSA605811  Xanthium strumarium L. C. Wheeler 1966-10-25 9087 Los Angeles San Gabriel Mountains: El Encanto, San Gabriel Canyon. Comment
  RSA607958  Xanthium strumarium L. C. Wheeler 1950-9-23 6794 Los Angeles San Gabriel Mountains: Paloma Flat. Big Tujunga Canyon. 560 Comment
  RSA610536  Xanthium strumarium L. C. Wheeler 1968-8-20 s.n. Los Angeles San Gabriel Mountains: Placerita Canyon. 518 Comment
  RSA632145  Xanthium strumarium Mary DeDecker 1978-9-23 4808 Inyo Owens Valley, north of Lone Pine;: Owens River, east of Alabama Gates 1116 Comment
  RSA650348  Xanthium strumarium D. Bartholomew 1961-6-1 s.n. Los Angeles Puddingstone Dam, San Dimas. Comment
  RSA679043  Xanthium strumarium Richard L. Zembal 1978-6-18 s.n. Inyo North Coso Hot Springs. Comment
  RSA696052  Xanthium strumarium Anonymous 1928-1 s.n. Orange Santa Ana River flats. Comment
  RSA764026  Xanthium strumarium Doris Bowers 1968-6-28 714 Los Angeles Diamond Bar Ranch 305 Comment
  RSA93916  Xanthium strumarium F. W. Peirson 1924-10-26 5264 Los Angeles Arroyo Seco, below California St. bridge, Pasadena 198 Comment
  RSA93918  Xanthium strumarium F. W. Peirson 1920-8-1 2237 Ventura 6 miles west of Ventura 0 Comment
  RSA93919  Xanthium strumarium F. W. Peirson 1924-8-29 5097 Orange Between Artesia and Huntington Beach, near county line. Comment
  RSA970  Xanthium strumarium J. T. Howell 1927-7-27 495 Orange Santa Ana River, Rancho Santa Ana. 152 Comment
  SBBG61639  Xanthium strumarium A. A. Heller 1926-9-10 14334 Butte near Glenn County line, near Sacramento River, Chico-Orland Hwy Comment
  SBBG94780  Xanthium strumarium J. Newman -Oct-1980 47 Ventura N of Calleguas Crk; Pacific Missile Test Center Comment
  SEINET10474067  Xanthium strumarium Mary Susan Taylor 1974-1 Taylor 324 Butte 61 Comment
  SEINET11804271  Xanthium strumarium C. V. Braun 1976-1 214 Kern San Joaquin Valley, 6-8 mi NW of Wasco, Sec. 10 Comment
  SEINET11808326  Xanthium strumarium S. A. Thompson, Rawlins, J. E. 1988-1 5260 Orange Cleveland National Forest, 3.8 mi E of San Juan Hot Springs on CA 74 370 Comment
  SEINET6095099  Xanthium strumarium Unknown 1996-7-11 8899 Los Angeles Liebre Mountains Comment
  SJSU8203  Xanthium strumarium C. T. Osugi 1969-10-5 112 Santa Clara Sunnyvale, 9 mi SW of San Jose Comment
  SJSU8204  Xanthium strumarium A. I. Wilson 1967-10-12 60 San Mateo Canada Rd by S part Crystal Springs L Comment
  UC1199227  Xanthium strumarium Joseph P. Tracy 1921-12-11 5982 Humboldt Alton Northern Coast Ranges, Eel River 30 Comment
  UC1354220  Xanthium strumarium P. M. Ray 1962-9-4 Napa Napa Comment
  UC186457  Xanthium strumarium Joseph P. Tracy 1915-9-12 4673 Humboldt Mouth of Laribee Creek Northern Coast Ranges 60 Comment
  UC36799  Xanthium strumarium W. L. Jepson 1891-9-16 Solano bank Sacramento River (at Rio Vista); Rio Vista, Sacramento River Comment
  UC398725  Xanthium strumarium A. A. Heller 1926-9-10 14334 Glenn near Sacramento River (on the Chico-Orland highway) Comment
  UCD137112  Xanthium strumarium Beecher Crampton 1961-9-19 5975 Yolo 1.5 miles west of Winters along Putah Creek. Comment
  UCD137115  Xanthium strumarium Charles B. Heiser Jr. 1946-9-18 s.n. Yolo in Putah Creek bed, near Davis. Comment
  UCD137120  Xanthium strumarium John Thomas Howell 1952-10-19 28855 Santa Clara near Sargent. Comment
  UCD137122  Xanthium strumarium John Thomas Howell 1967-11-3 44056 Tulare in irrigated part at NE corner, about 4.5 miles ENE of Pixley. 83 Comment
  UCD137124  Xanthium strumarium A. M. Shapiro 1988-10-9 s.n. Yolo West Sacramento, Yolo Bypass, ca. 1 km west of east levee, along north edge of railroad tracks. Comment
  UCD137127  Xanthium strumarium Robert F. Thorne; L. Debuhr et al. 1972-10-13 42447 San Bernardino San Gabriel Mountains. San Bernardino National Forest. Cajon Canyon along Cajon Creek due south of Lost Lake near Blue Cut. 807 Comment
  UCD137129  Xanthium strumarium Ernest C. Twisselmann 1970-10-9 17521 Fresno Warthan Creek at the Parkfield Road. 594 Comment
  UCD137131  Xanthium strumarium Ernest C. Twisselmann 1958-8-27 4742 San Luis Obispo Eastern San Luis Obispo County: Grant's Lake. 576 Comment
  UCD137134  Xanthium strumarium Collector Unknown Date Unknown s.n. Unknown County Unknown: Exact location unknown. Comment
  UCD137140  Xanthium strumarium M. P. Bellue 1931-9-24 s.n. Yolo westend of Yolo Causeway. Comment
  UCD137149  Xanthium strumarium Tom Ishimoto 1955-10-30 3329 Fresno Piedra area; 1.75 miles up Fish Creek from Trimmer Route, 20 yards west of fig tree near small stream coming in from west. Comment
  UCD137151  Xanthium strumarium James A. Lockhart 1954-6-7 s.n. Los Angeles Vicinity of Plant Physiology Building, U.C.L.A. Comment
  UCD137156  Xanthium strumarium Verne Grant; Herbert L. Mason 1946-8-6 7840 Colusa 1 mile north of Butte Outing Gun Club, near Colusa. Comment
  UCD137157  Xanthium strumarium A. A. Heller 1916-9-5 12647 Butte 8 miles N of Oroville. Dry Creek and near Durham. Comment
  UCD137158  Xanthium strumarium Gordon Pilone 1960-10-3 53 San Bernardino 16135 South Central Ave. in Chino. 182 Comment
  UCD137162  Xanthium strumarium L. Ahart 1982-9-9 3773 Sutter ca. 1/8 mile south of Myers home, Myers Ranch, Sutter Buttes. Comment
  UCD137163  Xanthium strumarium A. A. Heller 1914-7-31 11629 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  UCD35199  Xanthium strumarium Beecher Crampton 1953-9-30 1643 Sutter Sutter Bypass, 5 miles east of Robbins. Comment
  UCD35200  Xanthium strumarium Beecher Crampton 1953-9-30 1644 Sutter Sutter Bypass, 5 miles east of Robbins. Comment
  UCD35486  Xanthium strumarium Beecher Crampton 1957-4-8 3918 Solano south bank of Putah Creek, new channel, ca. three miles south of Davis. Comment
  UCD37728  Xanthium strumarium Beecher Crampton 1961-9-19 5976 Yolo 6 miles west of Winters, Vaca Mountains, along State Highway 128, Putah Creek Canyon. Comment
  UCD38946  Xanthium strumarium Beecher Crampton 1961-9-19 5976 Yolo 6 miles west of Winters. Vaca Mts. Putah Creek Canyon, along State Hwy. 128. Comment
  UCD62127  Xanthium strumarium J. Buck 2000-1 102 Sacramento SACRAMENTO COUNTY: Cosumnes River Preserve. Comment
  UCSB36338  Xanthium strumarium UCSB Botanical Society; Baldwin, Bruce 1979-11-2 Santa Barbara ca. 50 m. south of golf course road; Coal Oil Point Natural Reserve, UC NLWRS, Goleta Comment
  UCSB38540  Xanthium strumarium Lampl, Diane; Baley, David 1981-9-5 Santa Barbara Southeast area of Cachuma Lake, where dirt road forks, 1/4 mile West of the end of the paved old highway and 1/4 mile North of Highway 154 228 Comment
  UCSB43196  Xanthium strumarium Fletcher, Martin 1979-12-7 Santa Barbara At the head of Canada de Las Panochas 396 Comment
  UCSB43197  Xanthium strumarium Fletcher, Martin 1979-12-7 Santa Barbara At the head of Canada de Las Panochas 396 Comment
  UCSB45665  Xanthium strumarium Ferren, Wayne 1983-7-28 Santa Barbara 10 m. north of Calle Real and 20 m. west of La Patera Lane, Goleta; Lake Los Carneros County Park Comment
  UCSB7384  Xanthium strumarium Wedberg, H. 1958-7-15 Los Angeles Behind store at jct. New and Old Topanga Canyons, Santa Monica Mtns. Comment
  UCSB7385  Xanthium strumarium Foley, Marie 1952-10-27 Santa Barbara Foothill Rd. intersects San Marcos Rd., Santa Barbara Comment
  UCSC001485  Xanthium strumarium Peter Kamb 1948-11-13 1295 Ventura Sespe Creek near Little Sespe fork, above Fillmore. Sespe Creek, Little Sespe fork, Fillmore. 183 Comment
  UCSC008245  Xanthium strumarium Randall Morgan 2004-8-3 4276 Santa Cruz Santa Cruz, San Lorenzo River Comment
  UCSC008743  Xanthium strumarium Dylan M. Neubauer 2012-11-18 29 Santa Cruz Watsonville, .5 miles NNW of intersection of West Beach Street and Shell Road 2 Comment
  UCSC009282  Xanthium strumarium D. Styer 2012-9-21 545 Monterey Ft. Ord National Monument Boy Scout Lake (Region L9) Comment
  CLARK-A1528-311  Xanthium strumarium var. canadense Fred B. Essig 1966-9-12 Riverside Riverside Comment
  CLARK-A1528-312  Xanthium strumarium var. canadense Ken F. Clarke 1971-9-7 Riverside Riverside Comment
  CLARK-A1528-5392  Xanthium strumarium var. canadense John C. Roos 1951-9-25 5279 Riverside Riverside 259 Comment
  CLARK-A1656-754  Xanthium strumarium var. canadense Theo Glenn 1981-9-16 Riverside San Jacinto Mountains Comment
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Aug 28 2014
  SEINET10948661  Xanthium strumarium var. canadense Karen M. Meyer, Andrew Townesmith 2007-9-24 Meyer 250 Santa Clara Henry W. Coe State Park, SW corner of park, Hunting Hollow entrance and parking area. 253 Comment
  UCR118970  Xanthium strumarium var. canadense Beecher Crampton 1961-10-25 6052 Yolo Sacramento Valley, 2 miles west of Bryte, County Road 127, confluence of the Sacramento and Yolo Bypass. 15 Comment
  UCR4709  Xanthium strumarium var. canadense R. A. Anderson 1964-10-4 50 Santa Clara Santa Cruz Mtns., In an open field in Chemeketa Park 284 Comment
  CDA9009  Xanthium strumarium var. canadense T. C. Fuller 1957-10-8 El Dorado 4 miles south of El Dorado. 0 Comment
  HREC979 Image available Xanthium strumarium var. canadense H. F. Heady 1952-8-25 420 Mendocino Pond Pasture - Hopland Field Station Comment
  SEINET10475194  Xanthium strumarium var. canadense Mary Susan Taylor 1975-10-31 Taylor 979 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CLARK-A1528-313  Xanthium strumarium var. glabratum John C. Roos 1951-9-25 5279 Riverside Riverside 259 Comment



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