Staurastrum furcigerum f. eustephanum Nordst., 1888 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum furcigerum Name Homonyms Staurastrum furcigerum var. eustephanum (Ehrenberg) Nordstedt Staurastrum furcigerum f. eustephanum Nordst., 1888