Clematis vitalba Buch.-Ham. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Ranunculales family Ranunculaceae genus Clematis species Clematis grewiiflora Name Homonyms Clematis vitalba L. Clematis vitalba Buch.-Ham. ex Steud. Clematis vitalba Buch.-Ham.