Geissleria declivis (Hust.) Lange-Bertalot Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Naviculaceae genus Geissleria species Geissleria declivis Name Homonyms Geissleria declivis (Hustedt) Lange-Bertalot, 1996