Bidens cernua f. discoidea (Wimm. & Grab.) Briq. & Cavill. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Jacobaea species Jacobaea vulgaris Name Homonyms Bidens cernua var. discoidea Wimm. & Grab., 1829 Bidens cernua f. discoidea (Wimm. & Grab.) Briq. & Cavill. Bidens cernua var. discoidea Hartm.