蚕豆
It is found in the highest concentrations in uncooked red kidney beans and white kidney beans (also known as cannellini), and it is also found in lower quantities in many other types of green beans and other common beans ("Phaseolus vulgaris"), as well as broad beans ("Vicia faba") such as fava beans. It has a number of physiological effects and is used in medical research. In high doses, it is a toxin.