Tells: Rosy pink-red cap tans w/age, often w/olive patches. Yellow pores stain blue-that-browns, add red w/age & end dingy olive. Stem tapers down to yellow mycelium.
Other Information: White to pale yellow cap flesh has a thin red layer under the cap skin, & stains blue (sometimes slowly). Yellow stem that often has red or brown striations & other markings high up. According to North American Boletes this mushroom has an association with beech, but several experts in the Northeast have reported an association with hemlock and noted that it is particularly common in woods where hemlock and beech occur together. Chemical tests help the ID.
Edibility: Avoid. Several people have reportedly gotten ill.
- NH4OH (Ammonia): Cap surface turns orange/yellow to amber/brown, often with a bluish ring. Cap flesh has no reaction.
- KOH: Cap surface flashes olive-yellow, then rapidly turns olive-green or olive-bronze. Cap flesh turns pale orange.
- FeSO4 (Iron Salts): Cap surface turns grayish olive. Cap flesh turns pale yellowish.