Phormidium nigrum Dataset NCBI Taxonomy Rank SPECIES Classification phylum Cyanobacteriota class Cyanophyceae order Oscillatoriales family Oscillatoriaceae genus Phormidium species Phormidium nigrum Name Synonyms Oscillatoria nigra Oscillatoria nigra Vaucher ex Gomont, 1892 Homonyms Phormidium nigrum Phormidium cf. nigrum GARDAVSKY 1986/26b