orientalis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single smooth, flattened, egg-shaped leaf, 15–20 mm (0.6–0.8 in) long and 5–9 mm (0.2–0.4 in) wide.

The labellum has three lobes and scattered clusters of green and maroon bristles.

orientalis was first formally described in 2006 by Stephen Hopper and Andrew Brown from a specimen collected at Toolina Cove near Caiguna and the description was published in Nuytsia.

[2] The eastern bunny orchid grows in shallow soil on limestone cliffs and nearby woodland between Caiguna and Toolina Cove.

orientalis is classified as "Priority Three" by the Government of Western Australia Department of Parks and Wildlife[6] meaning that it is poorly known and known from only a few locations but is not under imminent threat.