<i>Hygrophorus citrinofuscus</i>: epitypification of a rare waxcap species from Central Europe and its transfer to the genus <i>Neohygrocybe</i>

<i>Hygrophorus citrinofuscus</i> is a striking and rarely reported grassland species originally described by J. Favre from the Swiss Alps. In absence of sequence data for the type specimen, a recent collection from Austria, which is well documented based on morphology and sequence data, is designated as the epitype of <i>H. citrinofuscus</i> to stabilise the species concept. Further collections from Austria and the Czech Republic are given. Morphologically similar species are discussed. <i>Hygrophorus citrinofuscus</i> is morphologically and phylogenetically well delimited and macroscopically characterised by yellow-brown pileus colours, a fibrillose pileus surface, pale lamellae and a yellow stipe, making it readily recognisable in the field. Morphology of the lamellar trama as well as phylogenetic analyses of a combined matrix of ITS, LSU, SSU and <i>RPB2</i> sequence data clearly place this species in the genus <i>Neohygrocybe</i>, and a transfer is proposed. <b>Citation</b>: Friebes G, Fuljer F, Boertmann D, Voglmayr H, Kautmanová I (2025). <i>Hygrophorus citrinofuscus</i>: epitypification of a rare waxcap species from Central Europe and its transfer to the genus <i>Neohygrocybe</i>. <i>Fungal Systematics and Evolution</i> <b>15</b>: 121-132. doi: 10.3114/fuse.2025.15.05.