Closterium johnsonii West & West, 1898 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Closteriaceae genus Closterium species Closterium johnsonii Name Synonyms Closterium didymotocum var. johnsonii (West & G.S.West) J.A.Cushman, 1908 Homonyms Closterium johnsonii West & West, 1898