Cladonia

Cladonia

Observation - Cladonia. Description: Yet another Cladonia growing on a drystane dyke to which I can't put a name. Any suggestions, please? (And does anyone know a good source of info about these lichens?)

Yet another Cladonia growing on a drystane dyke to which I can't put a name. Any suggestions, please? (And does anyone know a good source of info about these lichens?)