Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990 Subkingdom Negibacteria Cavalier-Smith 2002 - negibacteria see Domain Bacteria Woese et al. 1990 Infrakingdom Glycobacteria Cavalier-Smith 2002 see Domain Bacteria Woese et al. 1990 Division Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 see Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 Subdivision Phycobacteria Cavalier-Smith 2002 see Subphylum Phycobacteria Cavalier-Smith 2002 Class Hormogoneae Cavalier-Smith 2002 - filamentous cyanobacteria see Subclass Nostocophycideae Order Nostocales Cavalier-Smith 2002 nom. rej. see Order Nostocales Borzì (1914) 1 Genus Nostoc Vaucher ex Bornet & Flahault (1888)