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 Gomontiellales Strunecký & Mareš (2023), sedis mutabilis] see Order Gomontiellales Strunecký and Mareš 2023
                     [Family Chamaesiphonaceae Borzì (1878)] see Family Chamaesiphonaceae Borzì 1878
                       [Genus Chamaesiphonᵀ A.Braun (1864)] see Genus Chamaesiphon Braun 1864
                         Chamaesiphon confervicolus A. Braun in L. Rabenhorst 1865
                         Chamaesiphon fuscus (J.T. von Rostafinski) A. Hansgirg 1888
                         Chamaesiphon incrustans A. Grunow in L. Rabenhorst 1865
                         Chamaesiphon polonicus (J.T. von Rostafinski) A. Hansgirg 1887
                         [Form subgenus Chamaesiphon subg. Euchamaesiphon Geitler (1925)]
                         x [Form subgenus Chamaesiphon subg. Godlewskia (Janczewski) Komárek & Anagn. (1995)] see Genus Godlewskia Janczewski (1883)