This interesting aquatic plant is sometimes found by the edges of streams and pools It is called Menyanthes trifoliata, and is also known as the buck bean. It is herbaceous and flowers in early summer, the flowers being bell-shaped, white inside, and streaked with red outside. The flowers are borne on stems which float on the surface of the water. The bog bean is easily propagated by taking short lengths of the stems and pegging them down with carnation pegs to the moist ground or bottom of the water, until they throw out roots. See Water Garden.