Achnanthidium affine (Grunow) Czarn. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Achnanthales family Achnanthidiaceae genus Achnanthidium species Achnanthidium affine Name Homonyms Achnanthidium affine (Grunow) Czarnecki, 1994