Scytonema crustaceum C.Agardh Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Bacteria phylum Cyanobacteria class Cyanobacteriia order Cyanobacteriales family Scytonemataceae genus Petalonema species Petalonema crustaceum Name Homonyms Scytonema crustaceum C.Agardh ex Bornet & Flahault Scytonema crustaceum C.Agardh