Nitzschia graeffii Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Bacillariales family Bacillariaceae genus Nitzschia species Nitzschia graeffii Name Homonyms Nitzschia graeffii Nitzschia graeffii Grunow ex Cleve, 1878 Nitzschia graeffii Grunow