1. The death cap mushroom (Amanita phalloides), among others, closely resembles edible varieties yet is deadly.

2. If I had to guess, I'd say extract of amanita phalloides, the aptly-named death cap mushroom.

3. Deadly poisonous, it is a member of section Phalloideae and related to the death cap A. phalloides.

4. The green death cap (Amanita phalloides) is one of the most dangerous poisonous mushrooms and is responsible for most of the fatal mushroom poisonings globally.