Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Chytridiomycota Doweld (2001)
     Class Chytridiomycetes Moebius (1929)
       Order Polyphagales Doweld (2014) [monotypic]
         Family Polyphagaceae F. Maek. (1948) [monotypic]
           Genus Polyphagus Nowak. (1877)
             Polyphagus euglenaeᵀ (Bail) Nowak. (1877)