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 Sordariales Chadef. ex D.Hawksw. & O.E. Erikss. (1986) Genus Rhexosporium Udagawa & Furuya (1977)