Almost 70 per cent of the world’s orchids are found in India’s Northeast. The northeastern states of India are the treasure house of biological wealth of the country. They are a high-priority area for investment of the world’s leading conservation agencies.

There are 127 species, and 6 varieties belonging to 52 genera are endemic to this region. Of these, 79 (62.2 %) species are epiphytic, 40 species (31.49 %) are terrestrial, and 7 (5.51 %) species are holomycotrophic (saprophytic). The highest concentration lies in Arunachal Pradesh and Sikkim. Interestingly, these states are very rich in orchid genetic resources.

Source: https://link.springer.com/chapter/10.1007/978-981-10-0620-3_3