Poisonous mushrooms can cause food poisoning, and some species contain toxins that can lead to severe illness or even death.

But are these mushrooms really poisonous? Researchers at Friedrich ... the best known of which is the fly agaric mushroom (Amanita muscaria), which also gave the toxin its name.

The mushrooms, which appeared to be common white button mushrooms, were actually death cap mushrooms (Amanita phalloides), a highly toxic variety. The victims developed severe liver damage and ...

The East Bay Regional Park District is cautioning park visitors that mushrooms popping up during the rainy season may contain dangerous toxins.