Staurastrum excavatum West & G.S.West, 1895 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum excavatum Name Synonyms Staurastrum tetracerum subsp. excavatum (West & G.S.West) Playfair Staurastrum tetracerum var. excavatum (West & G.S.West) Playfair Homonyms Staurastrum excavatum West & G.S.West, 1895