TL;DR: Four new species of corticioid fungi from Hawaii are described and illustrated and the new genus Hemmesomyces is described to accommodate the new species H. puauluensis.
Abstract: Four new species of corticioid fungi from Hawaii are described and illustrated. The new genus Hemmesomyces is described to accommodate the new species H. puauluensis. Radulomyces tantalusensis, Crustoderma fuscatum and Scopuloides magnacystidia- ta also are described as new. In addition, the new combination Crustoderma vulcanense is proposed. Keys to the species of Crustoderma, Radulomyces and Scopuloides are provided. Key words: Corticiaceae, Crustoderma fuscatum, Crustoderma vulcanense, Hemmesomyces puauluensis, Radulomyces tantalusensis, Scopuloides magnacystidia- ta, taxonomy