Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Pseudomonadotaᵀ Garrity et al. 2021
                 Class Gammaproteobacteriaᵀ Garrity et al. 2005
                   Order Pseudomonadalesᵀ Orla-Jensen 1921 (Approved Lists 1980)
                     Family Pseudomonadaceaeᵀ Winslow et al. 1917 (Approved Lists 1980)
                       Genus Pseudomonasᵀ Migula 1894 nom. cons. (Approved Lists 1980)
                         Pseudomonas syringae van Hall 1902 (Approved Lists 1980)
                           Pseudomonas syringae pv. pisi (Sackett 1916) Young Dye and Wilkie 1978