Cosmarium laeve var. septentrionale Wille Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium laeve Name Homonyms Cosmarium laeve var. septentrionale G.S.West, 1899 Cosmarium laeve var. septentrionale Wille