This member of the Anacardiaceae family was given this name by Joseph Marie Henry Alfred Perrier de la Bâthie in 1944. It is found in south western Madagascar, growing in a well drained soil with some water and some sun. The stem can grow to 40 centimetres in diameter and 150 centimetres in height.
The genera name from Latin operculum; 'little lid' and Greek karyum; 'nut', referring to the lidded, nut-like seeds. The species name means ' looking like Hyphaene', a member of the Arecaceae family. A. Randrianasolo & P. P. Lowry, 2006: "This species can be recognized by its numerous small leaflets with strongly revolute margins and prominently raised venation on lower surface that forms deep cavities between veins".

