LICHALP

Rhizocarpon umbilicatum (Ramond) Flagey

Syn.: Diplotomma calcareum (Fr.) Flot., Diplotomma weissii (Schaer.) A. Massal., Lecidea calcarea (Fr.) Hepp nom.illeg., Lecidea umbilicata Ramond, Rhizocarpon calcareum (Fr.) Anzi, Rhizocarpon calcareum (Fr.) Anzi var. weissii (Schaer.) Th. Fr., Rhizocarpon pseudospeireum (Th. Fr.) Lynge, Rhizocarpon umbilicatum (Ramond) Flagey f. pseudospeireum (Th. Fr.) Szatala, Siegertia calcarea (Fr.) Körb., Siegertia pseudospeirea (Th. Fr.) V. Wirth. comb. inval., Siegertia umbilicata (Ramond) V. Wirth

Lichenised.

Substrate: calciferous rocks, intermediate rocks (such as calciferous schists)

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 mainly arctic-alpine, circumpolar species found on steeply inclined, often north-facing surfaces of calcareous, more rarely base-rich or slightly calciferous siliceous rocks; widespread throughout the Alps.