LICHALP

Cliostomum leprosum (Räsänen) Holien & Tønsberg

Syn.: Catillaria leprosa Räsänen

Lichenised. Poorly known taxon.

Substrate: bark

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

Note: a species with a whitish, abundantly sorediate thallus, biatorine apothecia (occasionally present) with yellowish discs, and conspicuous black pycnidia (always present); the difference from C. haematommatis is in need of reevaluation; on bark of conifers in old-growth forests; widespread in the Holarctic region; in the Alps so far only a few records along the northern rim.