Oak Crust

Peniophora quercina is a species of wood-decay fungus in the family Peniophoraceae. The species produces fruit bodies which vary in appearance depending on whether they are wet or dry. The wet fruit bodies are waxy and lilac, and attached strongly to the wood. When dry, the edges curl up and reveal the dark underside, while the surface becomes crusty and pink. P. quercina is the type species of Peniophora, and was moved to the genus upon its...