Placoneis clementioides (Hustedt) E.J.Cox Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Cymbellales family Cymbellaceae genus Placoneis species Placoneis clementioides Name Homonyms Placoneis clementioides (Hustedt) E.J.Cox, 1988