Identifying Your Bolete
7.12
SPOTTED BOLETE
Xantochonium affine
Frequency
Infrequent
Habitat Area
Under hardwoods, also under pines and Hemlock.
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Cap
Brown, finely velvety, often with small white or yellowish marks at maturity.
Margin
Even.
Tubes
Adnate.
Pores and Pore Surface
White at first, becoming brownish-yellow when at maturity, unchanging or turning brown when bruised; round to irregular pores, 1-2 per mm.
Stalk
Nearly equal or tapered in both direction.
Stalk Feature
Whitish when young, streaked brown or reddish brown at maturity, sometimes briefly reticulate at the apex.
Flesh
White, immutable, sometimes slowly staining yellowish.
Chemical reactions
FLESH: towards beige-brown with KOH and NaOH; to gray with FeSO4; towards purplish black with phenol, no change with NH4OH and formalin.
CAP-STIPE: towards beige-brown with KOH, NaOH and NH4OH; to gray with FeSO4; black on the cap with phenol and no change with formalin.
TUBES: towards brown with KOH, NaOH and NH4OH; to gray with FeSO4; to white with phenol and no change with formalin.
Comments
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The pale spots on the cap of mature fruitbodies is an excellent criterion of identification.
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