Oyster?

Oyster?

Observation - Oyster? - UK and Ireland. Description: Growing in a living tree, Beech I think. Purply brown, shiny (rain may have caused this), wavy/split edge and about 10 cm across.

Growing in a living tree, Beech I think. Purply brown, shiny (rain may have caused this), wavy/split edge and about 10 cm across.