Staurastrum rugulosum Ralfs Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Desmidiaceae genus Staurastrum species Staurastrum rugulosum Name Synonyms Cosmoastrum rugulosum (Bréb. ex Ralfs) Pal.-Mordv., 1982 Homonyms Staurastrum rugulosum Ralfs