Cosmarium quadrifarium subsp. quadrifarium Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium quadrifarium Name Homonyms Cosmarium quadrifarium var. quadrifarium Cosmarium quadrifarium f. quadrifarium Cosmarium quadrifarium subsp. quadrifarium