Bidens cernua var. tenuis Turcz. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Bidens species Bidens pilosa Name Homonyms Bidens cernua var. tenuis Turcz. ex DC., 1836 Bidens cernua var. tenuis Turcz.