Lung lichen on tree trunks
Lung lichen; Tree lungwort; Lungwort lichen
Harilik kopsusamblik Lobaria pulmonaria
Occurs in a number of locations, and is a protected species. Because it reacts to environmental pollution it is becoming rare in Europe. Reasonably certainly lung lichen can be found on aspen trunks and many other tree species in old forests. Old cemeteries are favoured habitats.