Cosmoastrum oligacanthum (Bréb. ex W.Archer) Pal.-Mordv., 1982 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum cristatum Name Homonyms Cosmoastrum oligacanthum (Bréb. ex W.Archer) Pal.-Mordv., 1982