Aira pumila Pursh Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Fl. Amer. Sept. 1: 76 (1813) Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Poa species Poa annua Name Homonyms Aira pumila Steven ex G.Westb. Aira pumila Vill. ex Trin. Aira pumila C.Agardh ex Roem. & Schult. Aira pumila Pursh Aira pumila C.Agardh Aira pumila Vill. Aira pumila Steven