Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Lecanoromycetes O.E. Erikss. & Winka (1997)
       Subclass Ostropomycetidae V. Reeb, Lutzoni & Cl.Roux (2004)
         Order Gyalectales Henssen ex D.Hawksw. & O.E. Erikss. (1986) see Order Ostropales Nannf. (1932)
           Family Coenogoniaceae Stizenb. (1862)
             1 Genus Coenogonium Ehrenb. (1820)
             2 Genus Dimerella Trevis. (1880)