51.   The World Health Organisation lists purslane as a medicinal plant.

52.   His clinic, which is also his home, is a ramshackle pile of bricks and tiles set in a garden full of medicinal plants.

53.   India has developed a wonder drug to enhance memory with the help of a well-known medicinal plant, and people here are lapping it up.

54.   Their older brother, Jonathan, is a former snake-farmer who now raises medicinal plants for export at his farm in western Kenya.