It has a single tube-shaped leaf and up to ten purplish-brown and green flowers with a purple labellum.

Prasophyllum tortilis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped, dark green leaf which is 120–250 mm (5–10 in) long and 2–4 mm (0.08–0.2 in) wide but narrower at its purplish base.

[2] Prasophyllum tortilis was first formally described in 2017 by David Jones and Robert Bates and the description was published in Australian Orchid Review from a specimen collected in the Wanilla Conservation Park.

[1] The specific epithet (tortilis) is a Latin word meaning "twisted",[3] referring to the fleshy texture of this orchid.

[2] This leek orchid mostly grows in hilly woodland between the Eyre Peninsula and southern Mount Lofty Ranges[2]