Another dramatic Dendrobium is D. chrysotoxum native to the Eastern Himalayas and South East Asia. We have seen many plants of this species in Southern Laos where we found it in seasonally dry forest at around 1000m. Plants were mostly growing on the trunk and lower branches of large trees in good light as shown on the photo below.
The long spikes of large yellow and orange flowers are produced from the top of stout pseudobulbs that shrivel a little by the end of the dry season but do not lose their thick leathery leaves.
We grow the species in Warm Asia with a wet summer and a dryer winter when not growing.