Euastrum ovale (Ralfs ex Ralfs) Nägeli, 1849 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Cosmarium species Cosmarium ovale Name Homonyms Euastrum ovale (Ralfs ex Ralfs) Nägeli, 1849