Aira avenacea Willd. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Sphenopholis species Sphenopholis pensylvanica Name Homonyms Aira avenacea Willd. ex Steud. Aira avenacea (R.Br.) Spreng. Aira avenacea Willd.