'Writing' lichen

'Writing' lichen

Observation - 'Writing' lichen - UK and Ireland. Description: Whitish, crustose thalli growing on beech tree. Lirellae with raised, black margins. Opening clearly visible and looks whitish (possibly pruinose). Possibly Graphis scripta.

Whitish, crustose thalli growing on beech tree. Lirellae with raised, black margins. Opening clearly visible and looks whitish (possibly pruinose). Possibly Graphis scripta.