Bidens cernua var. monocephala Zersi Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Bidens species Bidens cernua Name Homonyms Bidens cernua var. monocephala Zersi ex Fiori, 1904 Bidens cernua var. monocephala Zersi Bidens cernua subsp. monocephala (W.D.J.Koch) Ces.