Boletus subcaerulescens (“Almost Bluing King Bolete”)

Stem has white netting white, darkening lower down & from handling. Reddish-brown, oft-wrinkled cap. Creamy pores age to yellow & may stain blue-gray that turns brownish.

SKU: Boletus subcaerulescens Categories: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Description

Genus: Boletus

Species: subcaerulescens

Common Name: “Almost Bluing King Bolete”

Tells: Stem has white netting white, darkening lower down & from handling. Reddish-brown, oft-wrinkled cap. Creamy pores age to yellow & may stain blue-gray that turns brownish.

Other Information: White cap flesh can have a reddish-brown zone near the cap skin and/or the tubes, & often has a pleasant smell (lemony) and/or taste (nutty-sweet). Prefers spruce. White mycelium. Note that the bluing is not a reliable feature, and thus should be used more for final confirmation than an effort to narrow things down.

Edibility: Choice, with no question about it.

CHEMICAL TESTS:

  • NH4OH (Ammonia): Cap skin turns bluish green, then bright orange with a dull gray-green perimeter, then yellow-orange. Cap flesh does not react.
  • KOH: Cap skin turns amber-orange. Cap flesh does not react.
  • FeSO4 (Iron Salts): Cap skin does not react. Cap flesh turns pale greenish.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff 0 Mushrooms of West Virginia and the Central Appalachians 301 North American Boletes 161 157

Got something to discuss?


Guest
amronè
10 months 12 days ago

I found 2 Boletes that turned a dark blue when I cut the stems off for Spore printing. Are these EDIBLE? New to this. Open minded. Thanks

Guest
amronè
10 months 12 days ago

Mid west US which other boletes stain dark blue?