| Generic short diagnoses:
Fairly tough, annual, white- and thick-fleshed, brown-rotting polypore on Betula, typically with a lateral stipe-like base, small pores and allantoid spores. |
Species example: |

Piptoporus betulinus - DK: birkeporesvamp UK: Razorstrop Fungus / Birch Polypore |
Photo and © Jens H. Petersen Denmark, JHP-05.199 |
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