Cosmarium sulcatum Nordst., 1878 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium sulcatum Name Synonyms Cosmarium pseudoprotuberans var. sulcatum (Nordst.) Coesel, 1991 Homonyms Cosmarium sulcatum Nordst., 1878