Schoenus tetragonus (R.Br.) Poir. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Cyperaceae genus Mesomelaena species Mesomelaena tetragona Name Homonyms Schoenus tetragonus (R.Br.) Poir. Schoenus tetragonus (R.Br.) Roem. & Schult.