Identifying Your Bolete
5.21
ORANGE-CAPPED BOLETE
Leccinum aurantiacum
Frequency
Frequent
Habitat Area
Under poplars. The American specialist, Alan B. Bessette, tells us "under poplars and pines".
Cap
Usually orange in color, sometimes tending to brick red.
Margin
Appendiculate, with flaps of sterile tissue.
Tubes
Adnate, depressed near the stalk.
Pores and Pore Surface
Pore surface grayish to pale olive-brown in age, staining brownish when bruised; pores circular, 2-3 per mm.
Stalk
Nearly equal or enlarging downward, sometimes blue-green at the base.
Stalk Feature
Scabers whitish at first mainly near the apex, darker in age.
Flesh
White, staining purple-gray or blackish when cut, often the main colour change happen at the junction of the stalk and the cap.
Basal Mycelium
White.
Chemical reactions
FLESH: towards beige with KOH and NaOH, towards gray with FeSO4 and no change with NH4OH; towards pinkish, then brown and finally gray with phenol; towards pinkish at first then bluish gray at the end with formalin.
CAP: darker brown with all reagents except formalin.
TUBES: towards yellow with KOH, NaOH and NH4OH; gray with FeSO4; black with phenol and formalin.
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During reforestation, poplars are often replaced by Jack Pine or spruces to create pure conifer plantations. Under these conditions, it is possible that the Orange-capped Bolete is associated exceptionally with Jack Pine or spruces, even if in nature it does not occur. Analyzes using the DNA technique will confirm this.
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