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
               Order Tymovirales
                 Family Betaflexiviridae
                   Subfamily Quinvirinae
                     1 Banana mild mosaic virus
                     2.1 Genus Robigovirus
                     2.2.1 Banana virus X
                     2.2.2 Sugarcane striate mosaic-associated virus
                     2.2.3.1 Genus Foveavirus
                     2.2.3.2 Genus Carlavirus