Cnicus ×ambiguus Arcang., 1882 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Cirsium species Cirsium helenioides Name Homonyms Cnicus ambiguus Loisel. Cnicus ×ambiguus Arcang., 1882