This is another orchid found in Sikkim. It is present in the same lowland trees as Vanda ampulacea up to about 1000m. It commonly grows in on the trunk or larger branches of trees in good light and can make very large specimens. The photo below shows a plant growing on the trunk of a large tree near the road at about 400m altitude in Arunachal Pradesh.
We grow this species with a very distinct warm summer in Warm Asia and a cool winter in Cool Asia and it produces masses of flowers in April and May.