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 Phaeomoniellales K.H. Chen, A.E. Arnold, Gueidan & Lutzoni (2015) Family Celotheliaceae Lücking, Aptroot & Sipman (2008) [monotypic] 1 Genus Celothelium A.Massal. (1860)