Navicula polysticta var. circumsecta Grunow Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Naviculaceae genus Navicula species Navicula polysticta Name Homonyms Navicula polysticta var. circumsecta Grunow ex A.Schmidt, 1874 Navicula polysticta var. circumsecta Grunow