Rounded perennial branching from base, c. 25 cm high, glabrous to pilose. Leaves slender, terete, 5–10 mm long, fleshy. Flowers solitary, glabrous. Stamens 5. Fruiting perianth oblong somewhat dorsiventrally compressed, c. 2 mm long, 10-ribbed, glabrous or with pubescent limb, produced at base into 2 spurs; attachment broadly oval, slightly hollowed, oblique; spines 6, 1–4 mm long, spreading, the collateral pair borne on a short radicular tubercle; limb small, membranous, erect, in the slightly sunken apex. Seed vertical; radicle erect.