Staurastrum pygmaeum Bréb. ex Ralfs, 1848 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum punctulatum Name Homonyms Staurastrum pygmaeum Brebisson Staurastrum pygmaeum Bréb. ex Ralfs, 1848