Aegopodium podagraria (commonly called ground elder, herb gerard, bishop's weed, goutweed, gout wort, and snow-in-the-mountain, and sometimes called English masterwort and wild masterwort) is a perennial plant in the carrot family (Apiaceae) that grows in shady places. The name "ground elder" comes from the superficial similarity of its leaves and flowers to those of elder (Sambucus), which is unrelated. It is the type species of the genus Aegopodium. This species is native to Eurasia, and has been introduced around the world as an ornamental plant, where it occasionally poses an ecological threat as an invasive exotic plant. A. podagraria is perennial, growing to a height of 100 cm (39 in) with rhizomes. The stems are erect, hollow, and grooved. The upper leaves are ternate, broad and toothed. Numerous flowers are grouped together in an umbrella-shaped flowerhead known as a compound umbel. The main umbel is further divided into several secondary umbels known as umbellets or umbellules. Each umbellet has 15 to 20 rays (pedicels) that are each topped with a single, small, five-petaled white flower. The fruits are small and have long curved styles.The flowers are visited by many types of insects, thus being characterised by a generalised pollination system.