The morning glory Calystegia silvatica (syn. Calystegia sepium silvatica, C. inflata, and C. sylvestris) is known by the common name giant bindweed or large bindweed. It is the largest species of bindweed and is a strong rampant climber. It is native to southern Europe but has been introduced to many other areas because it is an attractive garden plant. Calystegia silvatica subsp. fraterniflora (Mack. & Bush) Brummitt (short-stalked false bindweed) is native to North America.