Xanthium spinosum f. laciniatum Scheuerm. & Thell. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Xanthium species Xanthium spinosum Name Homonyms Xanthium spinosum var. laciniatum Thell. Xanthium spinosum f. laciniatum Scheuerm. & Thell. ex Widder Xanthium spinosum f. laciniatum Scheuerm. & Thell. Xanthium spinosum var. laciniatum Scheuerm. & Thell. ex Widder