Cleistanthus oblongifolius[1] is a species of Asian trees, originally described by William Roxburgh and later placed by Johannes Müller Argoviensis; it is now included in the family Phyllanthaceae.
Distributed throughout Indochina and Malesia, its name in Vietnam is cọc rào; it has been recorded from: the Andaman & Nicobar Islands, Australia (Queensland), Bangladesh, Borneo, Cambodia, Java, Lesser Sunda Islands, peninsular Malaysia, Maluku, Myanmar, New Guinea, Philippines, Solomon Islands, Sulawesi, Sumatera, Thailand and Vietnam.[2]