Staurastrum planctonicum var. bulbosum (West) Thomasson, 1960 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum bulbosum Name Homonyms Staurastrum planctonicum var. bulbosum (West) Thomasson, 1960