Euastrum insulare var. silesiacum Gronblad Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Desmidiaceae genus Euastrum species Euastrum insulare Name Homonyms Euastrum insulare var. silesiacum (Grönblad) Willi Krieg. Euastrum insulare f. silesiacum Grönblad, 1926