Closterium lineatum f. elongatum Rosa, 1951 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Closteriaceae genus Closterium species Closterium lineatum Name Homonyms Closterium lineatum var. elongatum (Rosa) Croasdale Closterium lineatum f. elongatum Rosa, 1951