Staurastrum arnellii var. spiniferum W. & G.S.West Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum arnellii Name Homonyms Staurastrum arnellii var. spiniferum W. & G.S.West