[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 Gelidiales Kylin
           Family Gelidiaceae Kützing (1843)
             1 Genus Beckerella Kylin (1956)
             2 Genus Gelidiella Feldmann & G. Hamel (1934)
             3 Genus Gelidium J.V. Lamour. (1813)
             4 Genus Pterocladia J.Agardh (1852)
             5 Genus Pterocladiella B. Santelices & Hommers. (1997)