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 Tritimovirus
                   1 Brome streak mosaic virus
                   2 Oat necrotic mottle virus
                   3 Tall oatgrass mosaic virus
                   4 Wheat eqlid mosaic virus
                   5 Wheat streak mosaic virusᵀ
                   6 Yellow oat grass mosaic virus