Agrostis effusa (L.) Lam. Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Encycl. 1: 59 (1783) Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Milium species Milium effusum Name Homonyms Agrostis effusa Spreng. Agrostis effusa Gray, 1821 Agrostis effusa (L.) Lam.