Flora of Sikkim

Sikkim is situated in an ecological hotspot of the lower Himalayas, one of only three among the Ecoregions of India. The forested regions of the state exhibit a diverse range of fauna and flora. Owing to its altitudinal gradation, the state has a wide variety of plants, from tropical to temperate to alpine and tundra, and is perhaps one of the few regions to exhibit such a diversity within such a small area. Nearly 81% of the area of Sikkim comes under the administration of its forest department.

The flora of Sikkim include the rhododendron, the state tree, with a wide range of species occurring from subtropical to alpine regions. Orchids, figs, laurel, bananas, sal trees and bamboo grow in the lower altitudes of Sikkim, which enjoy a subtropical-type climate. In the temperate elevations above 1,500 metres, oaks, chestnuts, maples, birches, alders, and magnolias grow in large numbers. The alpine-type vegetation includes juniper, pine, firs, cypresses and rhododendrons, and is typically found between an altitude of 3,500 to 5 000 m. Sikkim has around 5,000 flowering plants, 515 rare orchids, 60 primula species, 36 rhododendron species, 11 oak varieties, 23 bamboo varieties, 16 conifer species, 362 types of ferns and ferns allies, 8 tree ferns, and over 424 medicinal plants. A variant of the Poinsettia, locally known as “Christmas Flower”, can be found in abundance in the mountainous state. The orchid Dendrobium nobile is the official flower of Sikkim.