Ferns on Old Castle Walls

Some ferns find old and crumbling castle walls an excellent habitat. I think that the above fern is the common polypody (Polypodium vulgare)

Common Polypody (on the right) together with maidenhair spleenwort.

Maidenhair spleenwort (Asplenium trichomanes) growing in the cracks along the wall. The walls also provide an excellent habitat for mosses and lichens.