Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Olpidiomycota Doweld (2013) [monotypic]
     Class Olpidiomycetes Doweld (2013) [monotypic]
       Order Olpidiales Caval.-Sm. (2012) [monotypic]
         Family Olpidiaceae J.Schröt. (1886)
           Genus Olpidium (A.Braun) Rabenh. (1868)
             Olpidium endogenumᵀ (A.Braun) J.Schröt. (1886)