Trifolium arvense, commonly known as the hare's-foot clover, rabbitfoot clover, stone clover or oldfield clover, is a flowering plant in the bean family, Fabaceae. It is native to Europe.

In botany, a stipule is an outgrowth typically borne on both sides of the base of a leafstalk. They are primarily found among dicots and rare among monocots. Stipules are considered part of the anatom