LICHALP

Lepra borealis (Erichsen) I. Schmitt, Hodkinson & Lumbsch

Syn.: Pertusaria borealis Erichsen

Lichenised.

Substrate: bark

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a mostly sterile species, morphologically resembling the globulifera-form of L. albescens, but with a different secondary chemistry (fumarprotocetraric and protocetraric acids in medulla and soralia) and therefore reacting Pd+ orange-red; based on a type from Alaska, but also known from NW Europe on the bark of deciduous trees, more rarely of conifers; in the Alps there are so far only a few records from forests under suboceanic climatic conditions.