Staurastrum gracile var. cyathiforme West & G.S.West, 1895 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum bulbosum Name Homonyms Staurastrum gracile var. cyathiforme West & G.S.West, 1895