Nostoc spongiaeforme C.Agardh ex Bornet & Flahault Dataset Nortaxa (Artsnavnebasen) Rank SPECIES Classification kingdom Bacteria phylum Cyanobacteria class Cyanophyceae order Nostocales family Nostocaceae genus Nostoc species Nostoc spongiaeforme Name Homonyms Nostoc spongiaeforme C.Agardh ex Bornet & Flahault