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 Herpotrichiellaceae Munk (1953) Genus Nadsoniella Issatsch. (1914)