Death cap — Amanita phalloides (Vaill. ex Fr.) Secr.

The death cap is a deadly poisonous mushroom from the Amanita family (Amanitaceae).

It grows from summer to autumn in all types of forests. Its main characteristics include a light green to brownish-green cap, a white stalk, and white gills. It has a white ring (vellum partialle) at the top of the stalk, and a massive white volva (vellum universalle) at the bottom. The flesh is white, juicy, and odorless. 

Sometimes, if it has been a particularly rainy year, this mushroom appears on a massive scale.