Schisandra glabra, the bay star-vine, is the only American species of this primarily Asian genus. It is native to the southeastern United States and northern Mexico. It grows in Louisiana, eastern Arkansas, southwestern Tennessee, Mississippi, Alabama, northwestern Florida, and Georgia, with isolated populations in Kentucky, South Carolina, North Carolina, and Hidalgo. Despite its wide range, it is considered a vulnerable species. Few populations are secure due to competition from invasive species (such as Japanese honeysuckle) and habitat loss.