Identifying Your Bolete
5.5
COMMON SCABER STALK
Leccinum scabrum
Frequency
Common
Habitat Area
Under broadleaf trees, mainly birches.
Cap
Grayish brown when young, devoloping olive tones in age, often paler at the margin.
Margin
Even, non appendiculate.
Tubes
Free, long, depressed near the stalk, whitish at first, browning with age.
Pores and Pore Surface
Pore surface whitish at firts, browning in age or sometime light brown when bruised; pores circular, 2-3 per mm.
Stalk
Enlarged downward.
Stalk Feature
Sometimes with bluish green stains near the base; in the upper part of the stalk, scabers are often arranged as vertical lines.
Flesh
Whitish, immutable, there is sometimes a blue or a greenish hue to the base of the stipe.
Basal Mycelium
White.
Chemical reactions
Flesh: towards beige with KOH, NaOH and NH4OH; to gray with FeSO4 and phenol; towards red with formalin.
Cap and stipe: towards brown with KOH, NaOH and phenol. Tubes: towards brown with KOH and NaOH; towards gray with FeSO4.
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A first fructification for the Common Scaber Stalk, in Shawinigan, Qc.: june twenty 2017.
F. Miron, biologist
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