Closterium costatum var. curtum Bréb., 1856 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Closteriaceae genus Closterium species Closterium costatum Name Homonyms Closterium costatum var. curtum Bréb., 1856