Pleurosigma balticum var. balticum Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Pleurosigmataceae genus Gyrosigma species Gyrosigma balticum Name Homonyms Pleurosigma balticum var. balticum Pleurosigma balticum f. balticum