Cirsium altissimum f. altissimum Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Cirsium species Cirsium altissimum Name Homonyms Cirsium altissimum subsp. altissimum Cirsium altissimum var. altissimum Cirsium altissimum f. altissimum