Gonionema compactum (Agardh) Nyl. Dataset United Kingdom Species Inventory (UKSI) Rank SPECIES Classification phylum Cyanobacteria class Cyanophyceae order Nostocales family Scytonemataceae genus Scytonema Name Homonyms Gonionema compactum (C.Agardh) Nyl. Gonionema compactum (C.Agardh) Nyl. Gonionema compactum (Agardh) Nyl.