Staurastrum johnsonii var. triradiatum G.M.Smith, 1924 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum johnsonii Name Homonyms Staurastrum johnsonii var. triradiatum G.M.Smith, 1924