Phormidium nigrum (Vaucher ex Gomont) Anagn. & Komárek, 1988 Dataset TAXREF Rank SPECIES Classification kingdom Bacteria phylum Cyanobacteria class Cyanophyceae order Oscillatoriales family Phormidiaceae genus Phormidium species Phormidium nigrum Name Synonyms Oscillatoria nigra Vaucher ex Gomont, 1892 Oscillatoriella nigra (Vaucher) Gaillon, 1833 Trichophorus niger (Vaucher) Desv., 1809 Homonyms Phormidium nigrum (Vaucher ex Gomont) Anagn. & Komárek, 1988