Oxyporus populinus, also known as the mossy maple polypore and poplar bracket, is a species of fungus in the family Schizoporaceae.

It is a plant pathogen that affects trees.

[1] It is typically white (sometimes gray near the center and/or pinkish near the margin), more or less semicircular, and 2.5–20 centimetres (1–8 in) wide, with tough flesh,[2] which is inedible.

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