Bromus purgans subsp. laeviglumis (Scribn. ex Shear) Swallen Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Bromus species Bromus pubescens Name Homonyms Bromus purgans var. laeviglumis (Scribn. ex Shear) Swallen Bromus purgans subsp. laeviglumis (Scribn. ex Shear) Swallen