Dioscorea campestris f. stenorachis Uline Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Dioscoreales family Dioscoreaceae genus Dioscorea species Dioscorea campestris Name Homonyms Dioscorea campestris f. stenorachis Uline Dioscorea campestris f. stenorachis Uline ex R.Knuth