Andropogon rufus var. exarmatus (Stapf) Stapf ex A.Chev. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Hyparrhenia species Hyparrhenia exarmata Name Homonyms Andropogon rufus var. exarmatus (Stapf) Stapf Andropogon rufus var. exarmatus (Stapf) Stapf ex A.Chev.