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 Choanephoraceae J.Schröt. (1897)
             Genus Poitrasia P.M.Kirk (1984) [monotypic]
               Poitrasia circinansᵀ (H. Nagan. & N. Kawak.) P.M.Kirk (1984)