Cynanchum tenellum Riedel Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Metastelma species Metastelma burchellii Name Homonyms Cynanchum tenellum Riedel ex E.Fourn. Cynanchum tenellum Blanco Cynanchum tenellum L.fil. Cynanchum tenellum Riedel