Usually 40-60 cm high, dense, with sparsely pubescent branchlets. Leaves erect, slightly incurved, with a broad decurrent and strongly keeled petiole; the upper mostly 3-4 mm long, linear-lanceolate, subacute, keeled on both surfaces, with a tuft of hairs at the base of the ventral surface and at the apex; the lower mostly 4-6 mm long, lanceolate, appressed, glabrous. Flower-heads mostly 5-7 mm wide (excluding bracts), globose, involucred, usually crowded in corymbiform clusters; involucral leaves about twice as long as the others, appressed, lanceolate, attenuate, ciliate in the lower half, cream-coloured. Bract usually 0.6-1 cm long, much exceeding the flower in length, lanceolate long-attenuate, cartilaginous, ciliate at the base, cream-coloured. Bracteoles shortly exceeding the flower, lanceolate, attenuate towards the base, villous on both surfaces. Calyx-lobes about 2 mm long, linear-oblong, acute, villous on both surfaces of the upper half. Petals 2-2.5 mm long, linear-oblong, obtuse, with a pair of prominent keels tapering downwards from the middle. Anthers 0.75 mm long, ovate. Ovary 3/4 inferior, villous' on the upper part, splitting readily into halves. Fruit splitting vertically into halves, 2-seeded: seeds oblong-elliptic, rounded on the dorsal surface, almost flat and slightly furrowed on the ventral surface, scabrid, black.
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Thinly hairy shrub to 1.5 m, resprouting from woody caudex. Leaves linear-deltoid, ascending-incurved, imbricate. Flowers in small, conspicuously involucrate heads grouped in loose, corymbose clusters, cream-coloured; bracts attenuate, white, longer than flowers.