Asclepias affinis DeWild. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Asclepias species Asclepias buchwaldii Name Homonyms Asclepias affinis De Wild. Asclepias affinis (Schltr.) Schltr. Asclepias affinis DeWild.