Grey lichen on wall, Heron Quays - 2012

Grey lichen on wall, Heron Quays - 2012

Observation - Grey lichen on wall, Heron Quays - 2012. Description: Growing fairly close together, on the top of a wall alongside a busy road, near to the river.

Growing fairly close together, on the top of a wall alongside a busy road, near to the river.