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) Family Annulatascaceae S.W. Wong, K.D.Hyde & E.B.G.Jones (1998) Genus Aquaticola W.H. Ho, K.M. Tsui, Hodgkiss & K.D.Hyde (1999)