Papilionanthe vandarum is a species of epiphytic orchid native to India, China, Myanmar, and Nepal.

Flexible, long and slender stems bear terete, distichously arranged leaves with cuticular papillae and specialised, club-shaped water-storage cells are found within the mesophyll.

The floral morphology of the fragrant, predominantly white flowers infers entomophily and they are thought to be pollinated by moths.

The three-lobed labellum bears a 1.6 cm long, slender, bent or curved spur, which has unicellular, or occasionally bicellular, secretory trichomes.

[7] Spindle-shaped, 0.3 mm long seeds with pointed ends are formed in capsules.