LICHALP

Buellia violaceofusca G. Thor & Muhr

Lichenised.

Substrate: bark

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a sterile crustose lichen with a pale grey thallus and maculiform soralia of a dark brownish colour with a violet tinge; on bark of old deciduous trees in shaded montane forests (ecological requirements similar to those of Caloplaca lucifuga); from the Alps there are, so far, a few records only.