[viruses]
   Realm Riboviria
     Family Pospiviroidae
       Genus Pospiviroid
         1 Chrysanthemum stunt viroid
         2 Citrus exocortis viroid
         3 Columnea latent viroid
         4 Iresine viroid 1
         5 Pepper chat fruit viroid
         6 Potato spindle tuber viroidᵀ
         7 Tomato apical stunt viroid
         8 Tomato chlorotic dwarf viroid
         9 Tomato planta macho viroid