Agropyron semicostatum subsp. tsukushiense Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Elymus species Elymus tsukushiensis Name Homonyms Agropyron semicostatum var. tsukushiense Ohwi Agropyron semicostatum subsp. tsukushiense