The death cap mushroom (Amanita phalloides) is a highly toxic fungus found in various parts of the world, particularly in Europe and North America. It typically has a greenish or yellowish cap and white gills, making it resemble some edible mushrooms. Consuming even a small amount can lead to severe liver and kidney damage, often resulting in death. This mushroom grows in association with certain trees, forming a symbiotic relationship known as mycorrhiza. It is essential to be cautious when foraging for wild mushrooms, as misidentification can have fatal consequences. Always consult an expert or reliable guide before consuming any wild fungi.