Pores and Pore Surface
Yellow when young, becoming yellowish olive in age, immutable or staining greenish blue when bruised; pores large and angular, 1-2 per mm.
Stipe marked with ribbed lines, especially near the apex, but not reticulate, with reddish brown to cinnamon dotts on a yellowish or brownish red background.
Yellowish white in the cap to ivory in the stipe, immutable, sometimes bluing slightly when cut.
Yellowish. FLESH: Towards beige with KOH and NaOH; to gray with FeSO4 and formalin; towards brown with phenol; no change with NH4OH. CAP-STIPE: towards beige with KOH and NaOH; to gray with FeSO4 and phenol; no change with NH4OH and formalin. No reaction initially with NH4OH on the cap, but after 20 to 30 minutes the color of the cap changes to reddish orange.
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