[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 Fucales Kylin
           Family Cystoseiraceae De Toni (1891)
             Genus Cystoseira C.Agardh (1820), nom. cons.
               Cystoseira usneoides (L.) M. Roberts (1968)