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 Phallales E. Fisch. (1898)
               Family Geastraceae Corda (1842)
                 1 Genus Geasteroides Long (1917)
                 2 Genus Geastrum Pers. (1794), nom. sanct., nom. cons.
                 3 Genus Myriostoma Desv. (1809)
                 4 Genus Nidulariopsis Greis (1935)
                 5 Genus Phialastrum Sunhede (1989)
                 6 Genus Pyrenogaster Malençon & Riousset (1977) see Genus Schenella T. Macbr. (1911)
                 7 Genus Radiigera Zeller (1944) see Genus Geastrum Pers. (1794), nom. sanct., nom. cons.
                 8 Genus Sphaerobolus Tode (1790)