Staurastrum sebaldi f. quadribrachiatum Bourr., 1978 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum sebaldi Name Homonyms Staurastrum sebaldi f. quadribrachiatum Bourr., 1978