Cosmarium obsoletum var. sitvense Gutw., 1902 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium obsoletum Name Synonyms Staurodesmus obsoletus var. sitvensis (Gutw.) Teiling, 1967 Homonyms Cosmarium obsoletum var. sitvense Gutw., 1902