Andropogon contortus subsp. glaber (Pers.) Hack. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Heteropogon species Heteropogon contortus Name Homonyms Andropogon contortus var. glaber (Hack.) Hack. Andropogon contortus subsp. glaber K.Richt. Andropogon contortus subsp. glaber (Pers.) Hack.