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