Carduus rigens Dryand. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Carduus species Carduus rigens Name Homonyms Carduus rigens Dryand., 1789 Carduus rigens Godr. Carduus ×rigens Aiton