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]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
                 Class Bacilli Ludwig et al. 2010
                   Order Lactobacillales Ludwig et al. 2010
                     Family Lactobacillaceaeᵀ Winslow et al. 1917 (Approved Lists 1980)
                       Genus Lactobacillusᵀ Beijerinck 1901 (Approved Lists 1980)
                         Lactobacillus delbrueckiiᵀ (Leichmann 1896) Beijerinck 1901 (Approved Lists 1980)
                           1 Lactobacillus delbrueckii subsp. delbrueckiiᵀ (Leichmann 1896) Weiss et al. 1984
                           2 Lactobacillus delbrueckii subsp. bulgaricus (Orla-Jensen 1919) Weiss et al. 1984
                           3 Lactobacillus delbrueckii subsp. indicus Dellaglio et al. 2005
                           4 Lactobacillus delbrueckii subsp. lactis (Orla-Jensen 1919) Weiss et al. 1984
                           5 Lactobacillus delbrueckii subsp. sunkii Kudo et al. 2012