Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Agaricomycotina Doweld (2001)
     Class Tremellomycetes Doweld (2001)
       Order Tremellales Fr. (1821)
         Family Trimorphomycetaceae Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout (2015)
           1 Genus Carlosrosaea Yurkov, Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout (2015)
           2 Genus Saitozyma Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout (2015)
           3 Genus Sugitazyma Yurkov, Xin Zhan Liu, F.Y. Bai, M. Groenew. & Boekhout (2015), nom. inval.
           4 Genus Trimorphomyces Bandoni & Oberw. (1983)