Leptothrium is a genus of African, Asian, and Neotropical plants in the grass family. Species 1. \n* Leptothrium rigidum Kunth - Jamaica, Hispaniola, Colombia, Venezuela 2. \n* Leptothrium senegalense (Kunth) Clayton - Africa from Cape Verde to Tanzania and Egypt; Arabian Peninsula, Iran, Afghanistan, Pakistanhomonym \n* Leptothrium lineare (Jacq.) Kunth in F.W.H.von Humboldt, A.J.A.Bonpland & C.S.Kunth 1816, syn of Isochilus linearis (Jacq.) R.Br. in W.T.Aiton 1813