Boldus boldus (Peumus boldus)

The bold tree, known in Latin as Peumus boldus and in English as Marsh marigold or Kingcup, is a tree native to the southern regions of South America. Traditionally used in Chilean and Peruvian medicine, it was popularised during the 19th century when it was brought to Europe. The tree is characterised by its tough, glossy leaves, which have a strong scent. Its fruits are small, blue-green berries. The flower is also characteristic - it is pale yellow and has about twenty five petals.

The products of the scented bold tree can be found in two main areas: medicine and gastronomy. In medicine, the bold leaf is most commonly used to treat digestive disorders and to stimulate bile secretion. The leaves are also used as a choleretic, gallbladder stimulant and to protect the liver. They are also known for their antiseptic, diuretic and antioxidant effects. In gastronomy, bold leaves are used to prepare herbal teas, which are popular for their specific aroma and taste. They are also often used to flavour various dishes, especially in South America. The bold tree is thus one of many examples of a plant that can serve both medicinal purposes and as an ingredient in the kitchen.