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 Rhodospirillales Pfennig and Trüper 1971 (Approved Lists 1980) Family Rhodospirillaceae Pfennig and Trüper 1971 (Approved Lists 1980) Genus Rhodospirillumᵀ Molisch 1907 (Approved Lists 1980) [monotypic] [Rhodospirillum fulvum van Niel 1944 (Approved Lists 1980)] see Phaeospirillum fulvum (van Niel 1944) Imhoff et al. 1998 [Rhodospirillum molischianum Giesberger 1947 (Approved Lists 1980)] see Phaeospirillum molischianum (Giesberger 1947) Imhoff et al. 1998 [Rhodospirillum salexigens Drews 1982] see Rhodothalassium salexigens (Drews 1982) Imhoff et al. 1998 [Rhodospirillum salinarum Nissen and Dundas 1985] see Rhodovibrio salinarum (Nissen and Dundas 1985) Imhoff et al. 1998 [Rhodospirillum sodomense Mack et al. 1996] see Rhodovibrio sodomensis (Mack et al. 1996) Imhoff et al. 1998 [Rhodospirillum tenue Pfennig 1969 (Approved Lists 1980)] see Rhodocyclus tenuis (Pfennig 1969) Imhoff et al. 1984 1 Rhodospirillum rubrum (Esmarch 1887) Molisch 1907 (Approved Lists 1980) n1.1 [Rhodospirillum photometricum Molisch 1907 (Approved Lists 1980)] see Pararhodospirillum photometricum (Molisch 1907) Lakshmi et al. 2014 n1.2 [Rhodospirillum sulfurexigens Anil Kumar et al. 2008] see Pararhodospirillum sulfurexigens (Anil Kumar et al. 2008) Lakshmi et al. 2014 n1.3 [Rhodospirillum oryzae Lakshmi et al. 2013] see Pararhodospirillum oryzae (Lakshmi et al. 2013) Lakshmi et al. 2014 n2.0 [Rhodospirillum centenum Favinger et al. 1994] see Rhodocista centenaria Kawasaki et al. 1994