Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Sordariomycetes O.E. Erikss. & Winka (1997) Subclass Sordariomycetidae O.E. Erikss. & Winka (1997) Order Chaetosphaeriales Huhndorf, A.N. Mill. & F.A. Fernández (2004) Genus Nawawia Marvanová (1980), incertae sedis