Northern Vietnam, Ninh Binh Prov., Nho Quan Distr., Cuc Phuong Municipality, Cuc Phuong National Park, around Guest Center of the National Park, 20°14′58′'N, 105°42′55′'E. Open secondary evergreen seasonal broad-leaved lowland forest on slopes of limestone hills at elev. about 320 m a.s.l. Shrub about 2 m tall. Flowers white.