Nostoc zetterstedtii Aresch. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Bacteria phylum Cyanobacteria class Cyanobacteriia order Cyanobacteriales family Nostocaceae genus Nostoc species Nostoc zetterstedtii Name Homonyms Nostoc zetterstedtii Aresch. Nostoc zetterstedtii Aresch. ex Bornet & Flahault