Name: Bulbophyllum vietnamense Seidenf.
Synonyms: Bulbophyllum dalatense Seidenf.; Cirrhopetalum sigaldiiGuillaumin. 
Etymology: vietnamense refers to the species’ place of discovery, Vietnam. 
First described: 1975 by Gunnar Seidenfaden in “Contributions to a Revision of the Orchid Flora of Cambodia, Laos and Vietnam”.
Origin / Distribution: Vietnam (particularly in the Dalat region).
Location / Habitat: An epiphyte growing in humid mountain forests at elevations of approximately 1000 to 1500 m. The species prefers cool to temperate conditions and an environment with constant humidity.
Description & Notes: Bulbophyllum vietnamense belongs to section Eublepharon. The plant produces ovoid, slightly angular pseudobulbs spaced along a creeping rhizome, each bearing a single leathery, oblong leaf. The inflorescences bear several flowers, often arranged in a fan-like or umbel-like formation (typical of the Cirrhopetalum type). The flowers are distinguished by elongated lateral sepals and an often contrasting, mobile lip. Their colors commonly range from yellow-green to reddish tones, with fine spotting.

In cultivation, the species prefers partially shaded locations and, due to its creeping growth habit, should be mounted (e.g. on cork or tree fern) or grown in shallow trays with well-drained substrate (fine bark or sphagnum moss). Good air circulation and regular watering are important, and the substrate should never be allowed to dry out completely for an extended period.