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 Polyporales Gäum. (1926)
               Family Xenasmataceae Oberw. (1966)
                 1 Genus Aphanobasidium Jülich (1979)
                 2 Genus Clitopilina G. Arnaud (1951), nom. nud.
                 3 Genus Cunninghammyces Stalpers (1985)
                 4 Genus Phlebiella P.Karst. (1890)
                 5 Genus Xenasma Donk (1957)
                 6 Genus Xenasmatella Oberw. (1966)
                 7 Genus Xenosperma Oberw. (1966)