Hypotrachyna afrorevoluta Pustulate Revolute Loop Lichen

A common, grey foliose lichen with broadly-rounded lobes which is similar to Hypotrachyna revoluta but probably more common than it. It is widespread in West Glamorgan where it  grows on wood and on rock and it is  commonly present on trees with mildly acidic bark. It is also found on wooden posts and park benches.