, a new species from Turkey, and a multigene phylogeny of .

A new species of , collected from Aydın Province on the coast of the Aegean Sea in southwestern Turkey, is described as , sp. nov., based on morphology and multigene molecular analysis of three nuc rDNA gene regions: internal transcribed spacer ITS1-5.8S-ITS2 (ITS), 28S, and 18S. The new species was found in forests dominated by and and mainly characterized by small basidiomata with a white pileus covered with pale ochre center and an ochre-discoloring volva, small basidiospores, lageniform pleurocystidia, balloon-shaped to clavate cheilocystidia, and stipitipellis hairs that are cylindrical or cylindrical-tortuous with subcapitate or lobe-like projections. A comprehensive description, illustrations, and line drawings are provided, and comparison with morphologically similar and phylogenetically related species is discussed.