organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Fungi R.T.Moore (1980) - fungi
       Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
         Class Basidiomycetes G.Winter (1880)
           Subclass Agaricomycetidae Locq. ex Parmasto (1986)
             Order Agaricales Underw. (1899)
               Family Mesophelliaceae Jülich (1982)
                 1 Genus Andebbia Trappe, Castellano & Amar. (1996)
                 2 Genus Castoreum Cooke & Massee (1887)
                 3 Genus Gummiglobus Trappe, Castellano & Amar. (1996)
                 4 Genus Malajczukia Trappe & Castellano (1992)
                 5 Genus Mesophellia Berk. (1857)
                 6 Genus Nothocastoreum G.W. Beaton (1984)