Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Eurotiomycetes O.E. Erikss. & Winka (1997) Subclass Chaetothyriomycetidae Doweld (2001) Order Chaetothyriales M.E.Barr (1987) Family Coccodiniaceae Höhn. ex O.E. Erikss. (1981) Genus Microxiphium (Harv. ex Berk. & Desm.) Thüm. (1879)