Cosmarium nasutum var. granulatum Nordst. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium nasutum Name Homonyms Cosmarium nasutum var. granulatum Nordst. Cosmarium nasutum f. granulatum Nordst., 1872