This member of the Araliaceae family was described by Rudolf Georg Strey in 1973. It is found in the Natal Province of South Africa. It grows in a well drained soil with some water and lots of sun. The stem will grow to 25 centimetres in diameter and reach seven meters or even 25 metres in height. The flowers are creamy green. The genera is named after Pierre Cusson, 1727-1783, a French physician, botanist and mathematician. The species after referring to the round canopy.

