the.com/death cap

means A pale, innocent-looking mushroom (Amanita phalloides) responsible for most fatal mushroom poisonings worldwide.

from Straightforward English naming: 'cap' for the mushroom's rounded cap shape, 'death' for what happens after you eat it. The species name phalloides refers to its phallic shape when young, from Greek phallos. The real menace is amatoxins, which calmly survive cooking and shut down the liver and kidneys days after a meal that seemed harmless at the time — the common name is one of the rare cases where folklore and biology agree completely.