While making the decision to introduce L. denudatus as a new species, we were guided by the following considerations. Its characteristic cystidia allow separating this species from all described Lyomyces we know, which, in our opinion, makes distinguishing L. denudatus easy.
Cystidial elements mostly capitate rarely tapering, (21–)34.9–62 × (3.5–)4–5.5(–7) µm (n = 80/4). Most of them are covered by thick solid crystalline matter in their proximal part while their ends lack any crystals. Single cystidia are almost naked, in this case, the proximal part of cystidia is clearly thick-walled.