The Collaborative International Dictionary
Leonotis leonurus
dagga \dagga\ n. a relatively nontoxic South African herb ( Leonotis leonurus) smoked like tobacco.
Syn: Cape dagga, red dagga, wilde dagga, Leonotis leonurus.
Wikipedia
Leonotis leonurus
Leonotis leonurus, also known as lion's tail and wild dagga, is a plant species in the Lamiaceae ( mint) family. The plant is a broadleaf evergreen large shrub native to South Africa and southern Africa, where it is very common. It is known for its medicinal and mild psychoactive properties. The main psychoactive component of Leonotis leonurus is leonurine. The name 'wild dagga' links it closely to cannabis as 'dagga' derived from the Khoikhoi 'dachab' is an indigenous South African name for cannabis species.