Kummerowia striata is a species of flowering plant in the legume family known by the common name Japanese clover. It is native to much of Asia and it is present in the eastern United States as an introduced species. This annual herb grows prostrate, spreading, or erect stems. It grows up to 40 centimeters tall. The leaves are made up of three oval leaflets. Flowers occur in the leaf axils. There are cleistogamous flowers, which self-fertilize and never open, and chasmogamous flowers, which open and receive pollen from other plants. The fruit is a small legume pod containing one seed.