Odontarrhena troodi is a 10–25 cm high perennial subshrub.

Leaves 5–10 mm long obovate-spatulate, covered with a silvery indumentum.

Flowers have 3 mm long golden-yellow petals.

The siliques are 7–8 mm long, elliptic and glabrous.

[2] Endemic to the Troodos Mountains in Cyprus, from 1300 m elevation to the highest summit of Hionistra.