Cosmarium pericymatium 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 pericymatium Name Homonyms Cosmarium pericymatium var. eboracense W. & G.S.West