Staurastrum furcigerum f. furcigerum Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum furcigerum Name Homonyms Staurastrum furcigerum f. furcigerum Staurastrum furcigerum var. furcigerum