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 Cyanobacteriota Oren et al. 2022
                 Class Chroococcophyceaeᵀ Hollerbach et al. 1953
                   Order Nostocales corrig. Borzì 1914
                     Family Stigonemataceae corrig. (Agardh ex Bornet and Flahault 1886) Borzì 1892 nom. cons.
                       1 Genus Boanema Ercegović 1927
                       2 Genus Cyanobotrys Hoffmann 1991 nom. illeg.
                       3 Genus Doliocatella Geitler 1933
                       4 Genus Gervasia Borzì ex Forti 1907
                       5 Genus Homoeoptyche Skuja 1944
                       6 Genus Myxoderma Schmidle 1901
                       7 Genus Pulvinularia Borzì 1916
                       8 Genus Sirosiphon Kützing ex Frank 1886
                       9 Genus Stigonemaᵀ Agardh ex Bornet and Flahault 1886