[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Rhodophycota
       Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)
         Order Cryptonemiales Schmitz (1892)
           Family Halymeniaceae Kützing
             1 Genus Acrodiscus Zanardini (1868)
             2 Genus Aeodes J.Agardh (1876)
             3 Genus Cryptonemia J.Agardh (1842)
             4 Genus Dermocorynus P.L. Crouan & H.M. Crouan (1858)
             5 Genus Grateloupia C.Agardh (1822)
             6 Genus Halymenia C.Agardh (1817)