Silphium erythrocaulon Bernh. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Silphium species Silphium perfoliatum Name Homonyms Silphium erythrocaulon Bernh. ex Spreng. Silphium erythrocaulon Bernh.