Originally reserved as a delicacy for the elite, edible mushrooms are now extensively grown on a commercial scale. There are, however, many poisonous species of mushroom, and the destroying angels of the Amanita genus are among the most toxic mushrooms known to man. Destroying angels are characterized by their white stalks and gills and have a telltale collar-like structure, or volva, at the base of their stalks. How soon after ingesting the toxic mushroom do symptoms of poisoning appear?
Source: The Free Dictionary