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BOLETUS VERMICULOSOIDES

Identifying Your Bolete
6.25

BOLETUS VERMICULOSOIDES

Boletus vermiculosoides
Frequency 
Very rare
Unknown
Medium
Size
Habitat Area
Under oaks. Boletus vermiculosoides is considered to be very rare, growing under oaks. However, we found it in Basse-Mauricie, Quebec, under oaks, but also in mixed coniferous forests, where oaks are absent.
Cap
Dull colored fruitbodies. Cap yellowish at first changing to brownish yellow and then brown with age.
Margin
Even, often paler than the rest of the cap.
Tubes
Adnate, depressed near the stalk, bluing rapidly when cut.
Pores and Pore Surface
Pore surface brown when young, paler with age, staining blackish-blue when bruised. Pores very small, circular to angular, 2-3 per mm. For Boletus vermiculosoides, the pore surface is dark brown when young and paler in age. For Boletus vermiculosus, pore surface is typically brown when young, decoming reddish brown to brownish orange in age.
Stalk
Nearly equal, staining blue when bruised.
Stalk Feature
Non reticulate stalk, yellowish at the apex, covered by a brownish pruinose toward the base.
Flesh
Rapidly staining blue in the cap when cut, blue to yellowish or brownish in the stalk.
Chemical reactions
FLESH: towards dark brown with KOH, NaOH and NH4OH; discoloration with FeSO4; towards black with phenol and towards gray with formalin. CAP-STIPE: everything changes to gray or blackish with all the reagents. TUBES: everything becomes more or less blackish with all the reagents.
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