[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Gammaproteobacteria Garrity et al. 2005
         Order Xanthomonadales Saddler and Bradbury 2005 see Order Lysobacterales Christensen and Cook 1978 (Approved Lists 1980)
           Family Xanthomonadaceae Saddler and Bradbury 2005 see Family Lysobacteraceae Christensen and Cook 1978 (Approved Lists 1980)
             Genus Xanthomonas Dowson 1939 (Approved Lists 1980)
               Xanthomonas citri (ex Hasse 1915) Gabriel et al. 1989