Navicula aspera (Ehrenberg) Donkin Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Naviculaceae genus Trachyneis species Trachyneis aspera Name Homonyms Navicula aspera (Ehrenberg) Donkin Navicula aspera Ehrenberg, 1840 Navicula aspera (Conrad, 1854)