[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Chlorophycota see Phylum Chlorophyta Pascher (1914)
       Class Chlorophyceae Wille (1884) - chlorophytes
         Order Caulerpales Schaffner (1922) see Order Bryopsidales J.H.Schaffn. (1922)
           Family Udoteaceae J.Agardh
             Genus Halimeda J.V.Lamour. (1812), nom. cons., orth. cons.
               Halimeda opuntia (L.) J.V.Lamour. (1812)