lichen parmelia on the bark of a tree. grows on birch.

algae background bark beautiful birch braid branch caperata close closeup color detail environment evernia flavoparmelia flora foliose forest fungi fungus green growing grows hale hyperopta lichen lichens light macro mesomorpha moss mushroom natural nature nyl oakmoss old outdoor park parmelia plant prunastri substratum sulcata symbiotic taylor texture tree trunk wallpaper wood