Staurastrum orbiculare Menegh. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum orbiculare Name Homonyms Staurastrum orbiculare Menegh. ex Ralfs Staurastrum orbiculare Menegh.