Two new species of Stilbohypoxylon and the taxonomic positions of Hypoxylon cyclopicum, H. chionostomum and Anthostoma chionostoma

Abstract

Two new species of Xylariaceae, Stilbohypoxylon macrosporum and Stilbohypoxylon minor, are described, illustrated and compared with the other three species of the genus. A key to these taxa is provided. Hypoxylon cyclopicum is considered a later synonym of Kretzschmaria micropus. Hypoxylon chionostomum and Anthostoma chionostoma, which have been treated as synonyms by some authors, are in fact not closely related. Hypoxylon chionostomum is a good Hypoxylon species, whereas A. chionostoma is a later synonym of Leptomassaria simplex.