Cosmarium subgranatum (Nordst.) Lütkem. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium subgranatum Name Synonyms Cosmarium granatum var. subgranatum Nordst., 1878 Homonyms Cosmarium subgranatum (Nordst.) Lütkem.