Identifying Your Bolete
7.4
SEPARATED-TUBES BOLETUS
Boletus separans, Xantoconium separans
Frequency
Frequent
Habitat Area
With oaks and possibly with other hardwoods, rarely with conifers.
Cap
Pileus often ribbed-alveolate, going from purplish violet when young to brownish yellow in old age.
Margin
Even or with a narrow band of sterile tissue.
Tubes
Adnate or spaced from the stipe.
Pores and Pore Surface
White at first, yellowish brownish in age.
Immutable or becoming deeper yellow or brownish when bruising, pores circular, 1 to 2 per mm.
Stalk
Widened down at a young age, more or less equal thereafter. Pale at first, the purple or reddish color of the mid-portion of the stipe increases with age; however, the apex and base of the stipe typically remain whitish. Sometimes developing yellow stains near the apex in old age.
Stalk Feature
Reticulate over the apex or overall the stipe; whitish reticulum then tinged with purplish in places.
Flesh
White, immutable.
Basal Mycelium
White.
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