Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               [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 Aphanizomenonᵀ C. Morren ex Bornet & Flahault (1886)] see Genus Aphanizomenon Morren ex Bornet and Flahault 1886
                         Aphanizomenon aphanizomenoides (A. Forti) M. Horecká and J. Komárek 1979
                         Aphanizomenon flexuosum J. Komárek and L. Kovácik 1989
                         Aphanizomenon flos-aquaeᵀ (L.) J. Ralfs ex Bornet & Flahault 1888 [ICBN]
                         Aphanizomenon gracile (E. Lemmermann) E. Lemmermann 1907
                         Aphanizomenon incurvum C. Morren ex Bornet & Flahault 1886-1888[1888]
                         Aphanizomenon issatschenkoi (Ussaczew) A.I. Proshkina-Lavrenko 1962
                         Aphanizomenon skujae J. Komárková-Legnerová and G. Cronberg