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) Family Cainiaceae J.C. Krug (1978), incertae sedis Genus Atrotorquata Kohlm. & Volkm.-Kohlm. (1993)