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 "Proteobacteria" Craig et al. 2010 Phylum "Alphaproteobacteria" Garrity et al., 2006 [monotypic] Class Alphaproteobacteriaᵀ Garrity et al. 2006 Order Rhizobiales Kuykendall 2006 Family Phyllobacteriaceae Mergaert and Swings 2006 Candidatus "Liberibacter" 1 Candidatus "Liberibacter africanus" corrig. Jagoueix et al. 1994 2 Candidatus "Liberibacter americanus" Teixeira et al. 2005 3 Candidatus "Liberibacter asiaticus" corrig. Jagoueix et al. 1994 4 Candidatus "Liberibacter solanacearum" Liefting et al. 2009