Centaurea calcitrapa var. calcitrapa Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Centaurea species Centaurea calcitrapa Name Homonyms Centaurea calcitrapa subsp. calcitrapa Centaurea calcitrapa var. calcitrapa