Divaricately branched, twiggy shrublet, up to 0.5 m tall, often thorny. Leaves scattered or clustered on short shoots, opposite and fused into a sheath at base, linear, 5-30 mm long, rarely shortly lobed. Flowerheads solitary and sessile, scattered or terminal on short shoots, urn-shaped, discoid, epaleate, florets 18-35, yellow, without basal ring of glandular hairs. Cypselas basally tufted with hairs.
Glabrous, sprawling shrublet to 30 cm. Leaves opposite, joined below, linear. Flower heads discoid, solitary and sessile at branch tips and on short shoots, yellow, epaleate, florets glandular.