Bromus purgans subsp. laevivaginatus Wiegand 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 f. laevivaginatus Wiegand Bromus purgans subsp. laevivaginatus Wiegand