Pterostylis xerophila, commonly known as the desert greenhood, is a plant in the orchid family Orchidaceae and is endemic to South Australia.

Pterostylis xerophila is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of between three and ten leaves.

The lateral sepals turn downwards, are wider than the galea, dished, and suddenly taper to narrow tips 20–25 mm (0.8–1 in) long.

[3][4] Pterostylis xerophila was first formally described in 1986 by Mark Clements from a specimen grown in Adelaide from material collected in the Great Victoria Desert.

Little is known about the threats to this greenhood but include grazing by feral rabbits and goats, weed invasion, accidental destruction by vehicle movement and inappropriate fire regimes.