Staurastrum furcigerum var. eustephanum (Ehrenberg) Nordstedt Dataset GBIF Backbone Taxonomy Rank VARIETY 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