Phylum Cyanobacteria Garcia-Pichel et al. (2020) see Phylum Cyanobacteriota Oren et al. 2022 Class Cyanophyceae Hauck (1885) see Class Chroococcophyceae Hollerbach et al. 1953 Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914 Family Aphanizomenonaceae Elenkin (1938), orth. inval. see Family Aphanizomenaceae corrig. Elenkin 1938 Genus Dolichospermum (Ralfs ex Bornet & Flahault) P. Wacklin, L. Hoffmann & Komárek (2009) see Genus Dolichospermum (Ralfs ex Bornet and Flahault 1886) Wacklin et al. 2009