Lycium ferocissimum

Lycium ferocissimum (African boxthorn or boxthorn) is a shrub in the nightshade family (Solanaceae). The species is native to Cape Province and Orange Free State in South Africa and has become naturalised in Australia and New Zealand. It is listed on the Noxious Weed List for Australian States and Territories and is a declared noxious weed in the United States.

African boxthorn is a large shrub which grows up to 5 metres (16 ft) high and is covered in spines.

The leaves are oval in shape and are 10–40 millimetres (0.39–1.57 in) long and 4–10 millimetres (0.16–0.39 in) in width.

The solitary flowers emerge from the leaf axils and are purplish.

The species was first formally described in 1854 by British botanist John Miers in the Annals and Magazine of Natural History. His description was based on plant material collected from Uitenhage in South Africa.