Tylophora crassifolia Zipp. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Vincetoxicum species Vincetoxicum crassifolium Name Homonyms Tylophora crassifolia Zipp. ex Decne. Tylophora crassifolia Zipp.