Dull brick-red to reddish brown with an olive tint, cracked in age.
Even, sometimes lobed or irregular at maturity.
Adnate, depressed near the stalk.
Pores and Pore Surface
Pore surface dingy yellow, immutable or staining cinnamon-red when bruised or in age; pores circular to angular, 1-3 per mm.
Whitish to yellowish or reddish, tapered downward.
Strongly reticulated on the upper part or all over the stalk.
Immutable or staining reddish-purple, sometimes yellow above the tubes when cut.
FLESH: pale beige with KOH and NaOH; bluish gray with FeSO4 and formalin; gray with phenol; no change with NH4OH.
CAP-STIPE: beige with KOH, NaOH and NH4OH; grayish with FeSO4 and phenol; no change with formalin.