[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Phaeophycota see Class Phaeophyceae Hansgirg (1886)
       Class Phaeophyceae Hansgirg (1886) - brown algae
         Order Scytosiphonales
           Family Scytosiphonaceae Farlow (1881)
             1 Genus Colpomenia (Endl.) Derbès & Solier, in Castagne (1851)
             2 Genus Compsonema P. Kuckuck (1899)
             3 Genus Endarachne J.Agardh (1896)
             4 Genus Hydroclathrus Bory (1825)
             5 Genus Nemoderma Schousboe ex Bornet (1892)
             6 Genus Petalonia Derbès & Solier (1850), nom. cons.
             7 Genus Rosenvingea Boergesen (1914)
             8 Genus Scytosiphon C.Agardh (1820), nom. cons.