Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Superclass Leotiomyceta O.E. Erikss. & Winka (1997)
       Class Lecanoromycetes O.E. Erikss. & Winka (1997)
         Order Lecanorales Nannf. (1932)
           Suborder Peltigerineae
             1 ?Family Placynthiaceae E. Dahl (1950), nom. cons.