
Europe, widespread in deciduous forests on calcareous soils.
Mycorrhizal with oak, beech, and chestnut on chalky soils.
Summer to early autumn.
Gyromitrin-like / GI Irritants
Causes severe GI distress when raw or undercooked. Also contains gyromitrin-like compounds. Blue bruising reaction is distinctive. Can cause hemolysis when consumed with alcohol.