A bright yellow fungus, usually belonging to the genus Coprinus (Agaricus, Latin name Agaricus). Most of them grow in greenhouses, potted plants and even indoors. The diameter of the cap is 2.5-6 cm, which is oblong at first and gradually becomes conical when it matures. There is a layer of lemon yellow powder on the surface, and there are slender ribs on the edge of the hat. Mushroom meat is yellow and white, crisp and fragile. The bacterial folds are also yellow or bright yellow, free and densely arranged. The stalk is 3- 10 cm long and gradually thickens downward. The yellow color of the pure yellow-white ghost umbrella comes from the hydroxyl indole substances contained in it. Note: Pure yellow and white ghost umbrella is poisonous and can cause severe stomachache. Don't eat it! !