The lion's tail (Leonotis leonurus) and Leonotis nepetifolia are plants that are sometimes called lion plants. 

Lion's tail (Leonotis leonurus) 

A large shrub with broad leaves that is native to South Africa

A member of the mint family (Lamiaceae)

Known for its medicinal properties

Contains leonurine and marrubiin

Also known as wild dagga

Leonotis nepetifolia 

A plant with a scientific name of Leonotis nepetifolia

Other information about lion's tail 

The main psychoactive component of Leonotis leonurus is thought to be related to the presence of leonurine or labdanes

A peer-reviewed journal published phytochemical analysis has confirmed that Leonotis leonurus contains leonurine

Like other plants in the mint family, it also contains marrubiin