Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria Subgroup Oscillatorian 1 Genus Oscillatoria Vaucher ex Gomont (1892) 2 Genus Spirulina P.J.F. Turpin ex M. Gomont (1892) 3 Genus Pseudoanabaena Lauterborn 1915 see Genus Pseudanabaena R. Lauterborn 1915 [ICBN] 4 Genus Lyngbya C.Agardh ex Gomont (1892), nom. cons. 5 Genus Phormidium F.T. Kützing ex Gomont 1892-1893[1893] 6 Genus Plectonema Thuret ex Gomont (1892) 7 Genus Trichodesmium [ICNB] see Genus Trichodesmium Ehrenb. ex Gomont (1893)