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