Crustose lichen

Crustose lichen

Observation - Crustose lichen - UK and Ireland. Description: The white lichen was on some vertical asbestos. If you zoom in, I think it is foliose, but confirmation appreciated (now confirmed as crustose!).

The white lichen was on some vertical asbestos. If you zoom in, I think it is foliose, but confirmation appreciated (now confirmed as crustose!).