Lawrynomyces, a new genus of corticioid fungi in the Hymenochaetales

Abstract

The new genus Lawrynomyces is proposed to accommodate Hyphoderma capitatum, a predominantly European species growing on decayed coniferous wood. The genus belongs to the Rickenella -clade in the order Hymenochaetales, and it includes species characterized by resupinate basidiomes, monomitic hyphal system with simple septate hyphae, presence of cystidia and hyphidia, suburniform to subcylindrical, pedunculate basidia, and subglobose to broadly ellipsoid basidiospores with slightly thickened walls not staining in Melzer's reagent or Cotton Blue. Published molecular data support the recognition of a distinct genus for Hyphoderma capitatum.