Identifying Your Bolete
7.1
KING BOLETE
Boletus edulis, Boletus chippewaensis
Frequency
Plentiful
Habitat Area
Under conifers, mainly in White Spruce and Norway Spruce plantations. Often with Jack Pine in the boreal forest.
Cap
Smooth, bumpy, alveolate, pale brown to dark brow or red.
Margin
Smooth, bumpy, alveolate, pale brown to dark brow or red.
Tubes
Free or adnate.
Pores and Pore Surface
Pore surface whitish, staining to lemon-yellow and olive-brown in age; pores circular, 2-3 per mm.
Stalk
Bulbous when young, nearly equal to enlarged toward the base in age.
Stalk Feature
White with a distinct whitish reticulum on the upper one-third of the stalk or more.
Flesh
White, immutable; often reddish under the pileipellis.
Basal Mycelium
White.
Chemical reactions
Flesh: no reaction except with phenol which will darken the flesh after 20 minutes. Cap and stipe: discoloration of the cap towards yellow with KOH, NaOH and NH4OH, towards gray with phenol. Tubes: towards brown with KOH, NaOH and phenol, towards gray with FeSO4, towards white with NH4OH and no reaction with formalin.
Comments
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King Bolete is very variable in the color and surface of its cap as well as in its general shape. It fruited for the first time at the end of July, but these fruitbodies are very parasitized; it is generally better to wait for the fructification of the 3rd week of September to pick fruitbodies of quality; this last fructification is much more abundant. On the market, this bolete is sold under the names of Summer King Bolete and Autumn King Bolete.
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