S.E. Asia, Malaysia, the Philippines to New Guinea, some Pacific Islands and two species in Australia. Small to medium-sized epiphytes with long rambling roots they are easily recognised by their flattened raceme which bears the flowers in either two distinct ranks or any direction.
Plants keep flowering from the same raceme over a long period of time.
The flowers only last a couple of days. Ex FRI Garden Lae. C. Dorsal sepal. D. Lateral sepal. This orchid is found in the rainforests of the tropical lowlands to an altitude of 1,200 m. Not easily detected when not in flower it hugs tree trunks and branches, the roots often wandering for several feet.