LICHALP

Umbilicaria crustulosa (Ach.) Lamy var. crustulosa

Syn.: Gyrophora crustulosa Ach., Gyrophora depressa (Ach.) Röhl., Gyrophora depressa (Ach.) Röhl. var. crustulosa (Ach.) Dalla Torre & Sarnth., Omphalodiscus crustulosus (Ach.) Schol., Umbilicaria spadochroa auct. medioeur. p.p. non Ehrh. ex Hoffm.

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: a cool-temperate to arctic-alpine, circumpolar lichen found on exposed, often steeply inclined surfaces of siliceous rocks with some water seepage in upland areas; widespread throughout the siliceous Alps.