G. valesiacum

is central European species that occurs at higher altitudes in natural coniferous forests (Plank, Wolkinger, 1981; Kotlaba, 1984; Sokół, 2000; Bernicchia, 2005; Ryvarden, Melo, 2014). It is very rare European species and there are no data on the synanthropic character of this species (Sokół, 2000). It was recorded on Larix (Kotlaba, 1984; Sokół, 2000; Bernicchia, 2005; Ryvarden, Melo, 2014) and probably on Picea abies (L.) H.Karst. (Kotlaba, 1984; Sokół, 2000).