Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Dothideomycetes O.E. Erikss. & Winka (1997) Order Myriangiales Starbäck (1899) Family Elsinoaceae Höhn. ex Sacc. & Trotter (1913) Genus Xenodium Syd. (1935)