Carduus polyacanthos Schreb., 1771 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Carduus species Carduus acanthoides Name Homonyms Carduus polyacanthos Curtis Carduus polyacanthos Schreb., 1771 Carduus ×polyacanthos Schleich. ex Heer Carduus ×polyacanthos Schleich. Carduus ×polyacanthos Ruhmer