Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Agaricomycotina Doweld (2001)
     Class Tremellomycetes Doweld (2001)
       Order Tremellales Fr. (1821)
         Family Bulleraceae Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout (2015)
           Genus Fonsecazyma Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout (2015)