Peniophora cinerea is a species of fungus in the family Peniophoraceae. It is a plant pathogen infecting black walnut (Juglans nigra).
It was first described as a species of Corticium by Christiaan Hendrik Persoon in 1797. Mordecai Cubitt Cooke transferred it to Peniophora in 1879.
It is found in Asia and North America.
See also List of black walnut diseases
References