Cymbella tumida (Bréb.) Van Heurck Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Cymbellales family Cymbellaceae genus Cymbella species Cymbella tumida Name Homonyms Cymbella tumida (Brébisson) van Heurck, 1880 Cymbella tumida (Bréb.) Grunow, 1880 Cymbella tumida (A.Schmidt) Skabichevskii, 1963