Identifying Your Polypores
4a-4
Birch polypore
Piptoporus betulinus, Fomitopsis betulina
Frequency
Plentiful
Habitat
On birch trees, wherever these trees grow.
Cap
Grey to brownish cap.
Margin
Margin curved on the fruiting surface forming a cord around it.
Tubes
Pores round to angular, visible or barely visible, 3 to 5 per mm.
Pores and Pore Surface
White at first, brownish with age.
Stalk
Lateral, short, stocky, sometimes almost absent, concolorous to the cap.
Flesh
White.
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