Cosmarium ordinatum var. schulzii (Messik.) Forster, 1973 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium ordinatum Name Synonyms Cosmarium orthostichum f. schulzii Messik., 1929 Homonyms Cosmarium ordinatum var. schulzii (Messik.) Forster, 1973