Staurastrum connatum var. spencerianum Nordst., 1888 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurodesmus species Staurodesmus spencerianus Name Homonyms Staurastrum connatum var. spencerianum Nordst., 1888