Abstract
Three new species of Crinipellis (Basidiomycota, Marasmiaceae), and one new variety of Moniliophthora are described from the Republic of Korea. Crinipellis birhizomorpha is characterized as having a short stipe arising from both substrate and rhizomorphs, and as forming rhizomorphs of two types, one forming abortive pilei; C. pallidipilus has golden brown, then distinctly pallescent pileus hairs, very long, hairy rhizomorphs of one type, and rather wide basidiospores in comparison with other species described here; and C. wandoensis has a brown to dark brown pileus, hairy rhizomorphs of one type, and both non-dextrinoid and slightly dextrinoid basidiospores. A new combination, Moniliophthora conchata is proposed. A new variety, Moniliophthora conchata var. brevispora differs from the type variety in having smaller basidiospores. Their detailed macro- and microscopic descriptions are given, and their taxonomic positions were confirmed using DNA studies. A key to the identification of Crinipellis and Moniliophthora taxa recorded in this country is also provided.