Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Pucciniomycotina R. Bauer, Begerow, J.P. Samp., M. Weiss & Oberw. (2006)
     Class Tritirachiomycetes Aime & Schell (2011)
       Order Tritirachiales Aime & Schell (2011)
         Family Tritirachiaceae Aime & Schell (2011)
           Genus Tritirachium Limber (1940)