Phaeophyscia endophoenicea

Phaeophyscia endophoenicea is a species of corticolous (bark-dwelling) foliose lichen in the family Physciaceae. It is characterized by a grey to pale brown rosette-forming thallus that grows 1–3 cm wide. It features narrow lobes with yellowish to reddish powdery reproductive structures called soredia, and a distinctive black lower surface with abundant root-like rhizines that anchor it to its substrate. The lichen's inner tissue (medulla) is typically yellow to orange-red in its lower part. Though rare and possibly underreported, P. endophoenicea primarily grows on the bark of slanting trees across various European regions, extending from southern areas into Scandinavia, with presence in relatively undisturbed forests of European Russia, Ukraine, and the Netherlands....read more on Wikipedia.