Cosmarium gayanum var. eboracense W. & G.S.West Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium gayanum Name Synonyms Cosmarium eboracense West, 1889 Homonyms Cosmarium gayanum var. eboracense W. & G.S.West