RF2HBRF5P–Parmelia saxatilis, commonly known as the salted shield lichen or grey crottle lichen,
RMEPCP6K–Shield lichen, Parmelia saxatilis, on sandstone, Derbyshire
RMP3H0G7–Parmelia saxatilis (rosette) and Rhizocarpon geographicum (green) Lichens, Denbighshire Moors, Wales
RM2FA244E–Shield Lichen, salted shield lichen, crottle (Parmelia saxatilis), on a rock, Iceland
RF2P00DN9–Parmelia saxatilis is common on rocks and acid barked trees. It is widely distributed in temperate and boreal zones of the northern Hemisphere.
RMF3WED1–Salted Shield Lichen
RMKFMPWC–Parmelia saxatilis (probably) on a tree in Northumberland, UK