Asclepias convolvulacea B.Heyne Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Cynanchum species Cynanchum annularium Name Homonyms Asclepias convolvulacea B.Heyne ex Decne. Asclepias convolvulacea Willd. Asclepias convolvulacea B.Heyne