Arrhenatherum avenaceum subsp. nodosum Rchb. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Arrhenatherum species Arrhenatherum elatius Name Homonyms Arrhenatherum avenaceum var. nodosum Rchb. Arrhenatherum avenaceum subsp. nodosum Rchb.