Name in North American Boletes: Boletus auriporus
- Genus 2: Boletus
- Species 2: viridiflavus
Common Name: Acidic (or Sour) Gold-Pored Bolete
Tells: Brilliant yellow pores dull w/ age & slowly stain red. Pinkish red layer above cap flesh & below cap skin. Viscid cap skin tastes sour & is easy to remove. Stem often long.
Other Information: Pores usually stain a slow brick red. Obvious white mycelium. Flesh hovers between white & pale yellow, & may occasionally bruise a faint blue. Likes oak. Can be confused with B. innixus but that grows in clusters.
Science Notes: DNA testing moved this mushroom into the newly erected genus “Aureoboletus”.
- NH4OH (Ammonia): Cap surface turns deep red, with already-reddish areas dimming toward orange. Cap flesh has no reaction.
- KOH: Cap surface turns red, orange, amber or yellow. Cap flesh has no reaction.
- FeSO4 (Iron Salts): No reaction.