Xanthium armatum Humb. & Bonpl. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Xanthium species Xanthium spinosum Name Homonyms Xanthium armatum Humb. & Bonpl. ex Wallr. Xanthium armatum Humb. & Bonpl.