Aira gracilis Trin. Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Fund. Agrost.: 144 (1820) Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Koeleria species Koeleria macrantha Name Homonyms Aira gracilis Trin. Aira gracilis Trin. ex Steud.