Agrostis altissima Lojac. Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Fl. Sicul. 3: 379 (1909) Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Agrostis species Agrostis gigantea Name Homonyms Agrostis altissima Lojac. Agrostis altissima (Walter) Tuck.