LICHALP

Verrucaria papillosa Ach.

Lichenised.

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

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: on more or less calciferous rocks in rather humid situations, closely related to V. viridula, but a distinct species according to Roux et coll. (2014).