Emmenopterys henryi is a species of flowering plant in the Rubiaceae family. It is found in the temperate parts of central and southern China and in Vietnam. It is a deciduous tree with opposite leaves and can attain heights of 45 m and grow to be 1000 years old. The epithet is named after the Irish botanist and sinologist Augustine Henry.
If every flowering plant in the Rubiaceae family in China and Vietam suddenly died, there would be no more Emmenopterys henryi in the world.