Elymus cretaceus Zingone Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Psathyrostachys species Psathyrostachys juncea Name Homonyms Elymus cretaceus Zingone ex Nevski Elymus cretaceus Zingone