Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Agaricomycotina Doweld (2001)
     Class Tremellomycetes Doweld (2001)
       Order Holtermanniales Libkind, Wuczk., Turchetti & Boekhout (2011)
         1 Family Holtermanniaceae Redhead (2015)