Dendrobium crumenatum is native to Hong Kong, Taiwan, India, Sri Lanka, Andaman Islands, Myanmar, Thailand, Malaysia, Cambodia, Laos, Vietnam, Lesser Sunda Islands, Moluccas, Sulawesi, Sumatra, New Guinea, Christmas Islands and the Philippines. It is a small to large sized, hot to warm growing epiphyte, which can reach a height of sometimes 5-8 cm, sometimes 60-92 cm, and even 152 cm, with spindle shaped, swollen basally for a few nodes, ridged, yellow with age stems that can branch, carrying, 4 to 19, thick, leathery, eventually deciduous, 5-8 cm long leaves. The Pigeon Orchid will flower on the upper nodes of the leafless older canes with several to many fragrant flowers, albeit for only a few hours, after a temperature drop and rain. The flowers usually are 2.5-5.0 cm long, but their size is very variable. White flowers are shiny and may have a bluish or pinkish color. The lip has 5 bright yellow bulges.