Utriascus, a new ascomycetous genus in the Sordariales

The new monotypic genus Utriascus is described from wood of Ulmus glabra in the ?umava Mts. National Park, Czech Republic. It is characterized by superficial, setose ascomata, unitunicate, saccate, and long-pedunculate asci that lack any discharge mechanism in the apex and one-celled, dark pigmented ascospores enclosed in a hyaline ornamented sheath. Utriascus is classified in the Sordariales.