This deciduous, small, flat-crowned tree has young branches which are densely covered with golden, furry hairs. Later they become grey and peel off to expose a powdery, rusty-red bark. The spines are long and straight, white with a reddish-brown tip. The flowers are white balls, grouped at the ends of the young branches, seen in summer. The fruit is a straight, flat greyish-brown pod. In India the wood is used to build temples and in ritual fires. The magical uses in South Africa are numerous. A sprig is placed over a bed to war off evil. It is used in money and love spells and the burned wood stimulates psychic powers. It is both frost and drought resistant. An ideal plant for hedging/screening and it also attracts birds.It occurs naturally in Zimbabwe, Botswana and the Transvaal. Named for Matthew Augustine Joseph Rehnn (1779-1831) a German physician. Named for Rev George Harvey Vachel (1798-1839) a British priest and plant collector. He was chaplain to the British East India company in China where he collected plants.