asexual fungi R.T.Moore (1980) - fungi
   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 Rutstroemiaceae Holst-Jensen, L.M. Kohn & T. Schumach. (1997)
             1 Genus Rutstroemia P.Karst. (1871), nom. cons.