Staurastrum dilatatum var. extensum Borge, 1906 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurodesmus species Staurodesmus extensus Name Homonyms Staurastrum dilatatum var. extensum Borge, 1906 Staurastrum dilatatum var. extensum Borge, 1906