Vilfa depauperata var. filiformis Thurber ex S.Watson Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Muhlenbergia species Muhlenbergia filiformis Name Homonyms Vilfa depauperata var. filiformis Thurb. Vilfa depauperata var. filiformis Thurber ex S.Watson