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 Ophiostomatales Benny & Kimbr. (1980) 1 Family Kathistaceae Malloch & M. Blackw. (1990) 2 Family Ophiostomataceae Nannf. (1932)