Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Leotiomycetes O.E. Erikss. & Winka (1997)
       Order Helotiales Nannf. (1932)
         Family Ploettnerulaceae Kirschst. (1924)
           1 Genus Cadophora Lagerb. & Melin (1927)
           2 Genus Dennisiodiscus Svrček (1976)
           3 Genus Lasiomollisia Raitv. & Vesterh. (2006)
           4 Genus Mycochaetophora Hara & Ogawa (1931)
           5 Genus Nothophacidium J. Reid & Cain (1962)
           6 Genus Oculimacula Crous & W. Gams (2003)
           7 Genus Pirottaea Sacc. (1878)
           8 Genus Pyrenopeziza Fuckel (1870), nom. protect.
           9 Genus Rhynchosporium Heinsen ex A.B.Frank (1897)