Kingdom Plantae Haeckel (1866) - plants
   Subkingdom Rhodoplantae G.W.Saunders & Hommers. (2004)
     Phylum Rhodophyta Wettst. (1901) - red algae
       Subphylum Eurhodophytina G.W.Saunders & Hommers. (2004)
         Class Florideophyceae Cronquist (1960)
           Subclass Rhodymeniophycidae G.W.Saunders & Hommers. (2004)
             Order Plocamiales G.W.Saunders & Kraft
               1 Family Plocamiaceae Kütz. (1843), nom. cons.
               2 ?Family Pseudoanemoniaceae
               3 ?Family Sarcodiaceae Kylin (1932)