Achnanthidium delicatulum Kütz. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Achnanthales family Achnanthidiaceae genus Planothidium species Planothidium delicatulum Name Homonyms Achnanthidium delicatulum Kützing, 1844 Achnanthidium delicatulum