Paxillus involutus, commonly known as the brown roll-rim or common roll-rim, or poison pax, is a poisonous basidiomycete fungus, previously considered edible and eaten widely in Eastern and Central Europe. It had been recognized as causing gastric upsets when eaten raw, but was more recently implicated in a potentially fatal immune hemolysis in those who had consumed the mushroom without ill-effects for years. It often grows near edible mushrooms as well which makes it harder to...
