Kingdom Fungi R.T.Moore (1980) - fungi
   Subkingdom Dikarya Hibbett, T.Y. James & Vilgalys (2007)
     Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
       Subphylum Agaricomycotina Doweld (2001)
         Class Agaricomycetes Doweld (2001)
           Subclass Phallomycetidae Locq. ex K. Hosaka, Castellano & Spatafora (2007)
             Order Geastrales K. Hosaka & Castellano (2007)
               1 Genus Geastrum Pers. (1794), nom. sanct., nom. cons.
               2 Genus Radiigera Zeller (1944) see Genus Geastrum Pers. (1794), nom. sanct., nom. cons.
               3 Genus Sphaerobolus Tode (1790)