Perrenial, hairy or glandular-hairy low-shrub up to 20-40 cm in height, occasionnaly with a woody base. This species is much-branched with angular and striate stems and stipular spines between 5 and 18 mm. Leaves are composed of three ovate-elliptic flattened leaflets with mucros. Leaflets are between 6-14 mm long by 2-6 mm large with terminal leaflet longer and broader than the lateral ones. Leaves are supported by a small petiole (2-6 mm). Flower are solitary, up to 2 cm in diameter and composed of 5 free sepals, 5 free, pink petals and 10 stamens. Fruits are capsules deeply 5-lobed obovoid, glandular and 6 to 7 mm long.