Scleria sumatrensis, commonly known as nutrush and Sumatran scleria,[1] is a plant species in the sedge family. It is native to temperate and tropical Asia (in China, India, Malesia, and Sri Lanka), where it is usually found growing in wetlands,[2] and is considered a noxious weed on the island of Borneo. It has been used in traditional medicine against gonorrhea.[3]