Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
   Subphylum Pucciniomycotina R. Bauer, Begerow, J.P. Samp., M. Weiss & Oberw. (2006)
     Class Microbotryomycetes R. Bauer, Begerow, J.P. Samp., M. Weiss & Oberw. (2006)
       Order Heterogastridiales Oberw. & R. Bauer (1990)
         Family Heterogastridiaceae Oberw. & R. Bauer (1990)
           1 Genus Hyalopycnis Höhn. (1918)
           2 Genus Krieglsteinera Pouzar (1987)
           3 Genus Pycnopulvinus Toome & Aime (2014)