''Sclerophora pallida'' is an

epiphytic An epiphyte is an organism that grows on the surface of a plant and derives its moisture and nutrients from the air, rain, water (in marine environments) or from debris accumulating around it. The plants on which epiphytes grow are called phoroph ...

lichen with stipitated acomata. In Europe, it is mostly found on broadleaf deciduous trees (e.g. '' Fraxinus excelsior'', ''Ulmus'' spp., ''

Acer platanoides ''Acer platanoides'', commonly known as the Norway maple, is a species of maple native to eastern and central Europe and western Asia, from Spain east to Russia, north to southern Scandinavia and southeast to northern Iran. It was introduced to ...

''). It is rare on young trees and is mostly common only on trees older than 70 years. Because of that, the species is considered to be close to being threatened by extinction in

Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and t ...

References

Ascomycota Lichen species Taxa named by Christiaan Hendrik Persoon Lichens described in 1794 Fungi of Europe {{Ascomycota-stub