(d) The Sundarbans contain the world’s largest coastal mangrove forest. The flora in Silent Valley National Park is unique as it is the last remaining tract of tropical evergreen forests. Tropical deciduous forests in India grow in the states of Madhya Pradesh,Uttar Pradesh, Bihar, Chhattisgarh,Orissa and parts of Maharashtra.The Eastern Himalayan subalpine coniferous forest is a temperate coniferous forest ecoregion which is found in the middle and upper elevations of the eastern Middle Himalayas.