[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 Alphaproteobacteria Garrity et al. 2006
         Order Rhodobacterales Garrity et al. 2006
           Family Rhodobacteraceae Garrity et al. 2006
             Genus Hyphomonas (ex Pongratz 1957) Moore et al. 1984
               1 Hyphomonas polymorpha (ex Pongratz 1957) Moore et al. 1984
               2 Hyphomonas adhaerens Weiner et al. 2000
               3 Hyphomonas hirschiana Weiner et al. 1985
               4 Hyphomonas jannaschiana Weiner et al. 1985
               5 Hyphomonas johnsonii Weiner et al. 2000
               6 Hyphomonas neptunium (Leifson 1964) Moore et al. 1984
               7 Hyphomonas oceanitis Weiner et al. 1985
               8 Hyphomonas rosenbergii Weiner et al. 2000