Euastrum crassum (Bréb.) Kütz. ex Ralfs, 1848 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Euastrum species Euastrum crassum Name Synonyms Euastrum crassum var. scrobiculatum (P.Lundell) Kossink. Homonyms Euastrum crassum (Bréb.) Kütz. ex Ralfs, 1848 Euastrum crassum (Bréb.) Kütz.