Cocconeis placentula subsp. placentula Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Achnanthales family Cocconeidaceae genus Cocconeis species Cocconeis placentula Name Homonyms Cocconeis placentula subsp. placentula Cocconeis placentula f. placentula Cocconeis placentula var. placentula