Centaurea calva Reut. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Centaurea species Centaurea alba Name Homonyms Centaurea calva Reut. ex Nyman, 1879 Centaurea calva Ledeb. Centaurea calva Ledeb. ex DC. Centaurea calva Reut.