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 Bromoviridae
                 Genus Bromovirusᵀ
                   1 Broad bean mottle virus
                   2 Brome mosaic virusᵀ
                   3 Cassia yellow blotch virus
                   4 Cowpea chlorotic mottle virus
                   5 Melandrium yellow fleck virus
                   6 Spring beauty latent virus