Identifying Your Bolete
5.23
BLACK-STEMMED BOLETE
Leccinum atrostipitatum
Frequency
Frequent
Habitat Area
In broadleaf forest, mainly under birches, in northern forests.
Cap
Brick-red, with fibrils forming downy patches or small scales in age.
Margin
Appendiculate, with flaps of sterile tissue.
Tubes
Adnate, depressed near the stalk.
Pores and Pore Surface
Concave or flat pore surface, rarely bulging, immutable or browning when bruised; pore surface grayish staining brown gradually from the stalk toward the margin, pores circular, 2-3 per mm.
Stalk
Enlarging downward, sometimes bulbous.
Stalk Feature
Dense black scabers even when young and allover up to the apex.
Flesh
Whitish staining purple-gray to blackish when cut.
Basal Mycelium
White.
Chemical reactions
FLESH: towards beige with KOH and NaOH.
CAP-STIPE: towards beige on the stipe with KOH and NaOH and towards black with formalin.
TUBES: towards black with KOH and NaOH, towards gray with FeSO4 and phenol, as well as a mixed reaction with NH4OH and formalin.
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For more informations
Refer to Boletes - Quebec et East of Canada.
Formation
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