Cosmarium crenatum f. boltiana (Gutw.) West & G.S.West, 1912 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium crenatum Name Homonyms Cosmarium crenatum f. boltiana (Gutw.) West & G.S.West, 1912