Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Mucoromycota Doweld (2001)
     Subphylum Mucoromycotina Benny (2007)
       Class Mucoromycetes Doweld (2001) [monotypic]
         Order Mucorales Nees (1817)
           Family Rhizopodaceae K.Schum. (1894)
             Genus Rhizopus Ehrenb. (1821), nom. cons.
               Rhizopus arrhizus A.Fisch. (1892)