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
               Aphanizomenon flos-aquaeᵀ (L.) J. Ralfs ex Bornet & Flahault 1888 [ICBN]
                 Aphanizomenon flos-aquae var. flos-aquae
                 Aphanizomenon flos-aquae var. klebahnii A.A. Elenkin 1909