Xanthium strumarium subsp. cavanillesii (Schouw) D. Löve & Dans. in Canad. J. Bot. 37: 205. 1959
Xanthium strumarium subsp. cavanillesii in Canad. J. Bot. 37: 205. 1959
is new combination for Xanthium cavanillesii in Ann. Sci. Nat., Bot. 12: 357. 1849
has orthographic variant Xanthium strumarium subsp. cavallinesii
Xanthium strumarium subsp. cavanillesii in Canad. J. Bot. 37: 205. 1959