| cirsium arvense | | Canada: Ontario, Regional Municipality of York, King Twp., Jokers Hill West., 100 m S of Racing Barn | | 315140425 |
| cirsium arvense | | Canada: Ontario, Kenora District, Dryden | | 1316027766 |
| cirsium arvense | | Canada: Ontario, Halton County, Burlington Township, Hendrie Valley, Meadow Area (Rifle Range) | | 1316025986 |
| cirsium arvense | | Canada: Ontario, Norfolk County, Delhi Twp., Intersection of Charlotteville West Quarter Line Road and Charlotteville Road #5 | | 1316023912 |
| cirsium arvense | | Canada: Ontario, Bruce County, North Bruce Peninsula Township, Pendall Point, Access Point | | 1316022952 |
| cirsium arvense | | Canada: Ontario, Regional Municipality of York, King Twp., Jokers Hill West, 100 m S of Racing barn | | 320339030 |
| cirsium arvense | | Canada: Ontario, Regional Municipality of York, King Twp., Jokers Hill West., 100 m S of Racing Barn | | 314910924 |
| cirsium arvense | | Canada: Ontario, Cochrane District, Timmins, NEBIE Block#1, Intensive treatment | | 1316021214 |
| cirsium arvense | | Canada: Ontario, Regional Municipality of York, King Twp., Jokers Hill West., 100 m S of Racing Barn | | 313664016 |