LICHALP

Psora gresinonis B. de Lesd.

Syn.: Lecidea gresinonis (B. de Lesd.) Zahlbr.

Lichenised.

Substrate:

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)

Note: on soil, in fissures of base-rich or slightly calciferous siliceous rocks, with optimum in dry grasslands; chemically heterogeneous (with and without norstictic acid); in the study area known only from the base of the Western Alps.