Roegneria tschimganica var. variiglumis L.B.Cai Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Elymus species Elymus durus Name Homonyms Roegneria tschimganica var. variiglumis L.B.Cai