Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Family Zopfiaceae G. Arnaud ex D.Hawksw. (1992)
         Genus Celtidia J.D. Janse (1897)