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Piptoporus (family Polyporaceae) A genus of fungi which form thick, bracketlike, non-stipitate fruit bodies which have a corky texture. P. betulinum is common on dead and dying birch trees (Betula species). The fruit body is semicircular to hoof-shaped, with a thick, rounded margin; the upper surface bears a thin greyish or brownish skin which may separate from the white flesh. See also RAZOR-STROP FUNGUS.

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