Xanthium strumarium
Το Xanthium strumarium (αγριαγκάθι) είναι ετήσιο φυτό της οικογένειας Asteraceae.
Xanthium strumarium (rough cocklebur, Noogoora burr, clotbur, common cocklebur, large cocklebur, woolgarie bur, Siberian cocklebur) is a species of annual plants in the flowering plant family Asteraceae. Some sources claim it originates in southern Europe and Asia, but has been extensively naturalized elsewhere.