Orbexilum onobrychis

About

Orbexilum onobrychis, commonly called French-grass or lanceleaf scurfpea, is a species of flowering plant in the legume family (Fabaceae). It is native to the eastern United States where its range is concentrated in the Midwest and Upper South. Its natural habitat is primarily prairies and riverbanks, typically in mesic or wet areas. It is an uncommon species, and can be found in high-quality prairie remnants as well as more disturbed areas.

Summary from Wikipedia