Boletus miniato-olivaceus

Description

Genus: Boletus

• Genus 2: Pulchroboletus (an eventual move is widely expected).

Species: miniato-olivaceus

Common Name: Red & Olive Velvet Cap

Tells: Rosy pink-red cap tans w/age, usually w/olive patches. Yellow pores stain blue-that-browns, add red w/age & end dingy olive. Yellow mycelium. Pinched base.

Other Information: White to pale yellow cap flesh has a thin red layer under the cap skin, & often stains blue, though sometimes faintly or slowly. Sometimes tastes a little bitter. Stem has pale yellowish ground color, often with pink or rosy longitudinal streaks, the reddish areas occasionally breaking apart into tiny platelike patches. Stem usually pinches at the bottom, but not always. Seems to require hemlock, but some older sources say beech and it’s most common in woods where hemlock and beech occur together. Chemical tests help the ID.

Edibility: Avoid. Several people have reportedly gotten ill.

CHEMICAL TESTS:

• 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.

Links:

• Mushroom Expert
• Mushroom Observer
• Wikipedia
• Google Image Search

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