Staurastrum capitulum Bréb. ex Ralfs Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Desmidiaceae genus Staurastrum species Staurastrum capitulum Name Homonyms Staurastrum capitulum Bréb. ex Ralfs Staurastrum capitulum Bréb., 1848