Cynanchum staubii (endemic common name: liane calle) is a rare coastal plant from the subfamily Asclepiadoideae in the family Apocynaceae.

It is endemic to the Îlot Fourneau and the Ile aux Aigrettes, two islets off the coast of Mauritius.

The species epithet commemorates Dr. France Staub, an ornithologist, herpetologist, botanist, and conservationist from Mauritius who collected the holotype in 1965.

Cynanchum staubii is a leafless vine with cylindrical, twining, fleshy, glabrous rhizomes which are 0.6 to 1.8 cm in diameter.

The ovate sepals which are rounded at the tip are 1.2 to 1.5. mm long and finely pubescent on the back.