Xanthium strumarium (rough cocklebur,[2]Noogoora burr,[3]clotbur, common cocklebur, large cocklebur, woolgarie bur) is a species of annual plants of the family Asteraceae.[4] Some sources claim it originates in southern Europe and Asia, but has been extensively naturalized elsewhere.[5][6][7] Others, such as the Flora of China and Flora of North America, state it originates in the Americas but was an early introduction to Eurasia.[8][9]
^"Xanthium strumarium L."Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 2 April 2021.
^Everitt, J.H.; Lonard, R.L.; Little, C.R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press. ISBN978-0-89672-614-7.