Cynanchum japonicum (Thunb.) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Cynanchum species Cynanchum japonicum Name Homonyms Cynanchum japonicum É.Morren & Decne. Cynanchum japonicum (C.Morren & Decne.) Hemsl.