The scientific name for a banana is Musa paradascica. However the scientific name for the banana leaf is the same as the entire organism. Also the scientific name for the banana tree is musa acuminata.
Peppermint - used in oil form in aromatherapy to treat nausea and vertigo. Peppermint - used in dried leaf form (tea) to treat upset stomach, particularly in children. Catnip - used in dried leaf form (tea) to treat "nerves" and insomnia.