Dioscorea ferruginea Thunb. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Dioscoreales family Dioscoreaceae genus Dioscorea species Dioscorea pyrifolia Name Homonyms Dioscorea ferruginea Thunb. ex Prain & Burkill Dioscorea ferruginea Thunb.