款冬及蜂斗菜属植物均含吡咯双烷生物碱。我国有些地区以蜂斗菜等的花蕾误作款冬花用。德国则有以蜂斗菜属植物的叶子误作款冬叶子入药。由于此两类植物的外形、生态环境、生物碱及其他成分相似，因此本文一并介绍其毒性。 Coltsfoot and Butterbur plants contain pyrrolizidine alkaloids. In some areas of China, the buds of butterbur are misused as coltsfoot flowers. In Germany, the leaves of Butterbur are misused as coltsfoot leaves. Since the appearance, ecological environment, alkaloids, and other components of these two types of plants are similar, the toxicity of these two types of plants is also described here.