Kummerowia striata

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Kummerowia striata is a species of flowering plant in the legume family known by the common names Japanese clover and common lespedeza. 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 cm (16 in) 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. At the close of the American Civil War, this plant appeared all over the southern United States. It was likely introduced to North America accidentally, possibly as a seed contaminant, but it was later imported and planted intentionally. It was used to vegetate pastures and provide forage for livestock. Along with Korean clover it was used to revegetate abandoned coal mine sites and to prevent erosion, as it thrives in sandy soils that have been disturbed by human activity. It is still used today. Cultivars are available, including "Kobe". It has benefits to human health and agriculture, as well as providing a food source to numerous species across the food web. Nevertheless, this plant is sometimes invasive.