Utriascus, a new ascomycetous genus in the Sordariales

Abstract

The new monotypic genus Utriascus is described from wood of Ulmus glabra in the Šumava 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.

• gelatinous equipment
• one-celled ascospores
• ornamentation
• saprobic
• systematics

I wish to thank to Dr. Walter Gams for correcting the Latin diagnosis. Dr. Nils Lundqvist is thanked for the critical reading of the manuscript. This research was supported by the Grant Agency of the Czech Republic (projects GAČR 206/99/D082, GAČR 206/99/1416).