Natura - nature
  
 actualia - actual entities
    
 Mundus Plinius - physical world
      
 naturalia - natural bodies
        
 Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
          
 Clade neomura Cavalier-Smith, 1987
            
 Domain Eukaryota Chatton, 1925 - eukaryotes
              
 Clade discaria Cavalier-Smith, 2021
                
 Clade natates Cavalier-Smith, 2021
                  
 Clade photaria Cavalier-Smith, 2021
                    
 Clade eucorta Cavalier-Smith, 2021
                      
 Superkingdom Corticata Lankester, 1878 - corticates
                        
 Kingdom Plantae Haeckel (1866) - plants
                          
 Clade Rhodaria Cavalier-Smith 2021
                            
 Subkingdom Rhodoplantae G.W.Saunders & Hommers. (2004) [monotypic]
                              
 Phylum Rhodophyta Wettst. (1901) - red algae
                                
 Subphylum Rhodellophytina Caval.-Sm. (1998), sedis mutabilis
                                  
 Class Rhodellophyceaeᵀ Caval.-Sm. (1998), sedis mutabilis
                                    
 Order Rhodellalesᵀ H.S. Yoon, K.M. Müller, Sheath, F.D. Ott & D. Bhattacharya