Xanthoria parietina is a foliose, or leafy, lichen. It has wide distribution, and many common names such as common orange lichen, yellow scale, maritime sunburst lichen and shore lichen. It can be found near the shore on rocks or walls (hence the epithet parietina meaning "on walls"), and also on inland rocks, walls, or tree bark.
Similar species: Teloschistales
Uploaded Jun 20, 2018. Captured Jun 18, 2018 14:47 in 698 US-1, York, ME 03909, USA.