First record of Hygrophoropsis flavida (Hygrophoropsidaceae, Agaricomycetes) from Türkiye

Hygrophoropsis flavida is reported for the first time from southern Türkiye, based on morphological and multi-molecular phylogenetic analyses, including nucleotide sequences of the nuclear ribosomal internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) and large subunit (LSU) of the ribosomal RNA (rRNA) gene. In addition, the species was found on the rotten wood of relict endemic Liquidambar orientalis trees, which are presented here for the first time as a new substrate for this genus. A description of this species, based on macro- and micromorphological characteristics, is provided, along with colour photographs and line drawings.