Caloboletus inedulis

Bitter, whitish-yellow cap flesh stains blue. Yellow pores darken w/age & stain blue. Netted stem is yellow on top, red going down, w/dark-staining base.

SKU: Boletus inedulis Categories: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Description

Name in North American Boletes: Boletus inedulis

Genus: Boletus

  • Genus 2: Xercomus

Species: inedulis

Common Name:

Tells: Bitter, whitish-yellow cap flesh stains blue. Yellow pores darken w/age & stain blue. Netted stem is yellow on top, red going down, w/dark-staining base.

Other Information: Light gray cap browns, cracks, & fissures w/age. Likes oak & hemlock. A European version (B. radicans) has been reported in the Northeast but is disputed. Radicans’ cap is pale white/gray that turns brown, with lemon yellow pores when young, and a bulbous stem that is pale on the bottom and bright yellow on the top.

Science Notes: DNA testing moved this mushroom from Boletus to a newly erected genus called “Caloboletus”.

Edibility: Avoid. Too bitter to eat.

CHEMICAL TESTS:

  • NH4OH (Ammonia): No reaction.
  • KOH: Cap surface turns pale orange. Cap flesh turns deep orange.
  • FeSO4 (Iron Salts): Cap flesh does not react.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff 0 Mushrooms of West Virginia and the Central Appalachians 0 North American Boletes 122 191

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