This member of the Euphorbiaceae family was described by Ferdinand Albin Pax in 1894.
It is found in Kenya, Congo, Angola, Tanzania, Zambia, Malawi, Zimbabwe, Mozambique, Somalia and South Africa, growing in a well drained soil with some water and some sun. The stem can grow to fourteen centimetres in diameter and from 125 to 200 centimeters height. The flowers are greenish yellow.
The genera name from the Greek words ἰατρός; iatros, meaning 'physician', and τροφή; trophe meaning 'nutrition', as to medicinal uses. The species name means 'spike-like, or disposed on a spike. A wild plant by B.T. Wursten, Zimbabweflora.co.zw.

