Eremascus is a member of the Euascomycete clade with free asci which are not organized into ascocarps, and it is thus an exception to the generalization which places such fungi in the Archiascomycetes or Hemiascomycetes.
Support for the inclusion of Eremascus in the Euascomycetes comes not only from molecular data but also from the presence of typical Euascomycete septa with one central pore and associated Woronin bodies.
Further, the arthroconidia are delimited by a double-septum and are released by rhexolytic secession, which is typical of certain Plectomycetes.