Melissa officinalis, known as lemon balm, balm, common balm, or balm mint, is a perennial herbaceous plant in the mint family Lamiaceae, native to south-central Europe, North Africa, the Mediterranean region, and Central Asia.
It is closely related to Datura, belonging to the same nightshade family, solanaceae. Brugmansia blooms dangle like great trumpets or bells while Datura blooms stand erect.