Overview
The Phalaenopsis Bulbophyllum (Bulbophyllum phalaenopsis) is one of the botanical world’s most astonishing and colossal epiphytic orchids. Indigenous exclusively to the steaming lowland rainforests of New Guinea, this botanical wonder produces enormous, strap-like pendulous leaves that can cascade down tree trunks for nearly six feet, paired with dense clusters of bizarre, meat-colored blossoms that emit a pungent carrion stench designed to deceive tropical blowflies.
Biology and Physical Characteristics
Bulbophyllum phalaenopsis produces massive, flattened, wrinkled pseudobulbs that cling to host tree bark via thick adventitious roots. From the top of each pseudobulb emerges a single colossal, leathery, pendulous leaf that hangs straight downward—an adaptation that sheds torrential equatorial rainfall and prevents fungal spores from establishing on the leaf surface. When flowering, the base of the pseudobulbs erupts with short, clustered inflorescences bearing 15 to 30 star-shaped flowers colored deep crimson-purple, liver-red, or reddish-brown, covered in soft hairy papillae. The flowers produce volatile dimethyl disulfide and putrescine chemicals that perfectly replicate the odor of rotting meat.
Behavior and Ecology
As an extreme carrion mimic (sapromyiophily), this orchid invests its reproductive energy into deceit rather than producing sweet nectar. The pungent rotting-carcass aroma carries for hundreds of meters through humid understories, attracting female carrion flies (Calliphoridae). Deceived into believing they have found an ideal nursery for their larvae, the flies land on the hairy, quivering hinged lip (labellum) of the blossom; the lip’s delicate balance rocks the fly against the column, securely cementing a sticky pollinarium packet onto the insect’s thorax before it departs to cross-pollinate adjacent blooms.
Conservation and Human Impact
Protected internationally under CITES Appendix II, Bulbophyllum phalaenopsis persists throughout remote, inaccessible lowland forests across New Guinea. However, extensive commercial logging concessions, forest clearance for oil palm plantations, and targeted wild harvesting by commercial orchid collectors threaten unprotected lowland populations. Cultivated specimens are prized in premier botanical collections worldwide, where horticultural propagation helps reduce commercial pressures on wild jungle stocks.
Interesting Factoid
This is the largest orchid in the entire genus Bulbophyllum, growing rubbery leaves longer than a full-grown human and producing flowers that smell so convincingly like a dead carcass that wild flies will literally lay eggs all over them!
Last updated: October 2026