Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Chytridiomycota Doweld (2001)
     Class Chytridiomycetes Moebius (1929)
       Order Chytridiales J.Schröt. (1886)
         Family Chytriomycetaceae Letcher (2011)
           Genus Siphonaria H.E. Petersen (1903)
             1 Siphonaria variabilisᵀ H.E. Petersen (1903)