Cosmarium cyclicum var. arcticum (Nordst.) West & G.S.West, 1905 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium cyclicum Name Synonyms Cosmarium cyclicum subsp. arcticum Nordst., 1872 Homonyms Cosmarium cyclicum var. arcticum Nordst. Cosmarium cyclicum subsp. arcticum Nordst., 1872 Cosmarium cyclicum var. arcticum (Nordst.) West & G.S.West, 1905