Pachypodium namaquanum, also known as halfmens or elephants trunk, is a Southern African succulent plant in the family Apocynaceae.

[3][4] The genus name Pachypodium is from the Greek for 'thick foot', an allusion to its swollen base, while the species name namaquanum is a reference to Namaqualand.

The succulent plant is native to the arid, rocky mountains of the Richtersveld in the Northern Cape of South Africa and in southern Namibia.

The very top of the plant is usually bent to the north, similar to the South American cactus Copiapoa cinerea.

There is a crown or tuft of undulate leaves at the apex of the trunk during the growing season which is throughout the winter months.