Cirsium caput-medusae Schur Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Cirsium species Cirsium spinosissimum Name Homonyms Cirsium caput-medusae Petr. Cirsium caput-medusae Schur ex Nyman Cirsium caput-medusae Sommier & H.Lév. Cirsium caput-medusae Schur