Shrub to 1.5 m high. Branchlets glandular-tuberculate, minutely pilose between decurrent leaf bases, soon erupting in corky patches. Leaves compressed-clavate, c. 10 mm long, 1.5 mm wide, obtuse, black-apiculate, glabrous, smooth and narrowly channelled adaxially, markedly channelled and glandular-bullate abaxially. Stipules black, globular. Flowers solitary, axillary, nutant; pedicel 6–8 mm long, glabrous. Sepals broadly ovate, 1.5 mm long, black-apiculate, fleshy, glabrous. Petals erect, forming a tube but spreading at apex, broadly oblong, 8 mm long, connate in lower half, red (rarely white), minutely tomentose adaxially, sparsely so abaxially towards margins. Stamens free; filaments narrowly oblong, abruptly narrowed at apex, densely woolly-ciliate; anthers 1 mm long, shortly white-apiculate. Style equal to stamens, terete, pilose. Cocci rounded at apex and shortly rostrate at outer angle.