Eriocaulon melanocephalum subsp. usterianum Beauverd Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Eriocaulaceae genus Eriocaulon species Eriocaulon setaceum Name Homonyms Eriocaulon melanocephalum subsp. usterianum Beauverd Eriocaulon melanocephalum subsp. usterianum (Beauverd) Beauverd ex Moldenke