LICHALP

Verrucaria margacea (Wahlenb.) Wahlenb.

Syn.: Lithocia margacea (Wahlenb.) A. Massal., Thelotrema margaceum Wahlenb., Verrucaria applanata Hepp ex Zwackh, ?Verrucaria divergens Nyl., Verrucaria filarszkyana Szatala, Verrucaria leightonii Hepp non A. Massal., Verrucaria tiroliensis Zschacke, ?Verrucaria vallis-fluelae Zschacke, Verrucaria zegonensis Zschacke

Lichenised.

Substrate: ,

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)

Note: an amphibious freshwater lichen of siliceous rocks beside streams and lakes; it prefers constantly inundated and even permanently submerged rocks to those merely in the spray zone. The species, widespread in Scandinavia and also known from the Southern Hemisphere, is widespread throughout the Alps.