Caloboletus peckii

Pale cap flesh w/red larval tunnels, blues slightly, & tastes sour or bitter. Yellow pores stain blue but resolve brown. Red & yellow netted stem.

SKU: Boletus peckii Categories: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Description

Name in North American Boletes: Boletus peckii

Genus: Caloboletus

  • Genus 2: Boletus
  • Genus 3: Butyriboletus

Species: peckii

Common Name:

Tells: Pale cap flesh w/red larval tunnels, blues slightly, & tastes sour or bitter. Yellow pores stain blue but resolve brown. Red & yellow netted stem. Very rare.

Other Information: Red to brownish cap. An extraordinarily rare mushroom.

Science Notes: DNA testing initially moved this exceptionally rare mushroom from Boletus to a newly erected Butyriboletus, but subsequent finds and testing have confirmed that it actually belongs in Caloboletus. See the discussion in the text and comments at Mushroom Observer #246697.

Edibility: Unknown, but unlikely given the bitter taste.

CHEMICAL TESTS:

  • NH4OH (Ammonia): Cap surface turns deeper red (yellow in bleached areas) and then dingy gray-olive. Cap flesh turns yellowish, with greenish blue near the tubes.
  • KOH: Cap turns rusty red. Cap flesh turns bright orange.
  • FeSO4 (Iron Salts): No data.

Links:

National Audubon Society Field guide to Mushrooms, Gary Lincoff  0 Mushrooms of West Virginia and the Central Appalachians  0 North American Boletes 138 182

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