Closterium setaceum subsp. setaceum Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Closteriaceae genus Closterium species Closterium setaceum Name Homonyms Closterium setaceum subsp. setaceum Closterium setaceum var. setaceum