Bitter Bolete
Tylopilus felleus
Family: Boletaceae
Also called: Bitter Bolete, Gallbladder Bolete

Overview
Porcini look-alike with pink pore surface at maturity and dark reticulation on the stipe. Intensely bitter — one cap will ruin a dish. Not poisonous but inedible.
Edibility
Toxic
Rarity
common
Trophic mode
mycorrhizal
Typical peak
Sep–Oct
Season
Sep–Nov — typical fruiting months: Aug, Sep, Oct.
Host trees & substrate
- Mycorrhizal with oak
- Mycorrhizal with beech
- Mycorrhizal with hemlock
Where it grows
See live fruiting predictions for Bitter Bolete on the forecast home page, or browse the full field guide.
Always confirm wild-mushroom identification with multiple sources and a knowledgeable local expert before consuming. Read the foraging safety guide.