Erect perennial c. 30 cm high. Branches slender, sparsely cottony. Leaves linear, 10–15 mm long, appressed-hirsute with minutely scabridulous hairs. Flowers solitary. Perianth 5-lobed, sparsely pubescent. Stamens 5. Fruiting perianth sparsely pubescent; tube broadly turbinate, c. 3 mm high and as wide at apex, faintly ribbed; attachment ±flat, horizontal, circular, c. 1.2 mm diam.; apex convex; limb inconspicuous; spines 4+2 radiating and slightly ascending, the 4 major spines 2.5–4 mm long, the radicular pair to 1 mm long and arising from a short spur that is decurrent as a rib. Seed horizontal; radicle ascending.