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]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Mycoplasmatota Murray 2021 [monotypic]
                 Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)
                   Order Acholeplasmatales Freundt et al. 1984 [monotypic]
                     Family Acholeplasmataceaeᵀ Edward and Freundt 1970 (Approved Lists 1980)
                       Genus "Candidatus Phytoplasma" Firrao et al. 2004
                         "Candidatus Phytoplasma pyri" Seemüller and Schneider 2004