Neidium dubium (Ehrenb.) Cleve Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Neidiaceae genus Neidium species Neidium dubium Name Homonyms Neidium dubium (Ehenberg) Cleve, 1894 Neidium dubium (Ehrenberg) Pfitzer