[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Actinobacteria" Garrity and Holt 2001
       Class "Actinobacteria" Stackebrandt et al. 1997
         Subclass Actinobacteridae Stackebrandt et al. 1997 see Class Actinobacteria Stackebrandt et al. 1997
           Order Actinomycetales Buchanan 1917 (Approved Lists 1980)
             Suborder Micrococcineae Stackebrandt et al. 1997 see Order Micrococcales Prévot 1940 (Approved Lists 1980)
               Family Microbacteriaceae Park et al. 1995
                 Genus Leifsonia Evtushenko et al. 2000
                   1 Leifsonia aquatica (ex Leifson 1962) Evtushenko et al. 2000
                   2 Leifsonia aurea Reddy et al. 2003
                   3 Leifsonia naganoensis Suzuki et al. 2000
                   4 Leifsonia poae Evtushenko et al. 2000
                   5 Leifsonia rubra Reddy et al. 2003
                   6 Leifsonia shinshuensis Suzuki et al. 2000
                   7 [Leifsonia xyli] (Davis et al. 1984) Evtushenko et al. 2000