Cosmarium circulare (Hassall ex Ralfs) Kütz., 1849 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Euastrum species Euastrum circulare Name Homonyms Cosmarium circulare Reinsch Cosmarium circulare (Hassall ex Ralfs) Kütz., 1849