High Quality Content by WIKIPEDIA articles! 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 creation by Mordecai Cubitt Cooke. The species is found primarily in Europe, where it can be encountered all year. Though primarily growing upon dead wood, especially oak, it is also capable of growing upon still-living wood.