Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           ?"viruses"
             Realm Riboviria
               Family Potyviridae
                 Genus Ipomovirus
                   1? Tomato mild mottle virus
                   2 Sweet potato mild mottle virusᵀ
                   3.1.1 Cassava brown streak virus
                   3.1.2? Ugandan cassava brown streak virus
                   3.2.1 Squash vein yellowing virus
                   3.2.2.1 Cucumber vein yellowing virus
                   3.2.2.2 Coccinia mottle virus