Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Agaricomycotina Doweld (2001)
     Class Agaricomycetes Doweld (2001)
       Order Hysterangiales K. Hosaka & Castellano (2007)
         Family Mesophelliaceae Jülich (1982)
           1 Genus Andebbia Trappe, Castellano & Amar. (1996)
           2 Genus Castoreum Cooke & Massee (1887)
           3 Genus Chondrogaster Maire (1926)
           4 Genus Gummiglobus Trappe, Castellano & Amar. (1996)
           5 Genus Gummivena Trappe & Bougher (2002)
           6 Genus Malajczukia Trappe & Castellano (1992)
           7 Genus Mesophellia Berk. (1857)
           8 Genus Nothocastoreum G.W. Beaton (1984)