Holarctic species in the Pluteus ephebeus clade: description of four new species and revision of historical names

Hana Ševčíková; Ekaterina F. Malysheva; Vladimír Antonín; Francesco Dovana; Giuliano Ferisin; Django Grootmyers; Jacob Heilmann-Clausen; Guillermo Muñoz González; Andrew M. Minnis; Stephen D. Russell; Carmel Sammut; Michal Sochor; Alessia Tatti; David Wasilewski; Guillaume Eyssartier; Oğuzhan Kaygusuz; Alfredo Vizzini; Alfredo Justo