Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Chytridiomycota Doweld (2001)
     Class Chytridiomycetes Moebius (1929)
       Genus Blyttiomyces A.F. Bartsch (1939), incertae sedis
         1 Blyttiomyces helicus Sparrow & M.E.Barr (1955)
         2 Blyttiomyces spinulosusᵀ (A. Blytt) A.F. Bartsch (1939)