Arctagrostis angustifolia Nash ex Britton & Rydb. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Arctagrostis species Arctagrostis arundinacea Name Homonyms Arctagrostis angustifolia Nash Arctagrostis angustifolia Nash ex Britton & Rydb.