LICHALP

Lepra erumpens (Erichsen) Hafellner

Syn.: Pertusaria erumpens Erichsen

Lichenised.

Substrate: siliceous rocks

Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)

Note: a silicicolous species resembling L. aspergilla, with a grey, rimose thallus with minute soralia, with fumarprotocetraric and protocetraric acid in medulla and soralia, and therefore reacting Pd+ orange-red; rare in Europe, but perhaps not always distinguished.