Its main distribution is in lowland areas with isolated forested hills. Presently it is a boreal lichen, but previously it also occurred in Fagus sylvatica forests in southern Vestfold, in the boreonemoral region. The species has been mapped in detail in parts of Nordmarka north of Oslo by Haugmoen (1952). It was re-mapped by Olsen & Gauslaa (1991). Two chemical strains are present in Norway: The common one containing diffractaic acid, the other evernic acid (the latter is known from only a single locality. Package: cardboard drums, with double aseptic food poly bags inside. Or by cartons, with vacual aseptic food poly bags inside, 20kgs per carton with 8 bags inside,2.5kg per bag.