Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Sordariomycetes O.E. Erikss. & Winka (1997)
       Subclass Xylariomycetidae O.E. Erikss. & Winka (1997)
         Order Xylariales Nannf. (1932)
           Family Requienellaceae Boise (1986)
             1 Genus Lacrymospora Aptroot (1991)
             2 Genus Parapyrenis Aptroot (1991)
             3 Genus Requienella Fabre (1883)