Rhodocybe Cistetorum (Basidiomycota, Entolomataceae), a New Species from the Colchic Ecoregion of Turkey

Abstract

Based on both morphological and molecular data, Rhodocybe cistetorum sp. nov., found under Cistus creticus, is described as a new species from the Black Sea coast of Turkey. ITS and LSU rDNA sequences obtained from the type specimen did not find any close match in public databases, but the new taxon is phylogenetically nested within Rhodocybe based on the analysis of LSU data from the new species as well as LSU, SSU, rpb2 and tef1 sequences from species of Clitocella, Clitopilus, Clitopilopsis, Rhodocybe and Rhodophana. The new species is well distinguished by a small, slightly umbilicate, creamy to beige pileus, decurrent, whitish to creamy lamellae and somewhat angular to broadly ellipsoid basidiospores. A full description of the species is provided with field photos, micromorphological illustrations, a phylogenetic tree and a short discussion.