Which exotic species of plant is known as ‘Terror of Bengal’? Why is it called so?

 The Water Hyacinth (Eichoria Crassipes Sorms), an exotic species of plant is known as “Terror of Bengal”. The exotic plant was brought into India as a decorative garden plant. The Water Hyacinth has grown so extensively in the West Bengal that it is choking up the rivers and streams. It has spread up into almost all water courses and hence, it has got a nickname as Terror of Bengal”.