[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 Sphacelariales Migula (1908)
           Family Sphacelariaceae Decaisne (1842)
             1 Genus Choristocarpus G. Zanardini (1860)
             2 Genus Cladostephus C.Agardh (1817)
             3 Genus Sphacelaria H.C. Lyngbye (1819)
             4 Genus Sphacella J. Reinke (1890)