Calamagrostis agrostoides Matuszk. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Calamagrostis species Calamagrostis obtusata Name Homonyms Calamagrostis agrostoides Boiss. Calamagrostis agrostoides (Pursh) Spreng. Calamagrostis agrostoides (Pursh) Trinius Calamagrostis agrostoides Matuszk.