Lithophytic perennial herb, with white latex in all parts. Leaves small, elliptic, opposite, in 2–3 pairs mostly at shoot tip; blade coriaceous, base acute to obtuse with a basal gland, apex acute to short acuminate; margin entire, faintly reflexed. Inflorescence usually subterminal, sometimes also extra-axillary, umbels, 5–15 flowered. Calyx lobes 5, pinkish white, triangular-ovate to ovate-oblong, apex acute or obtuse, glabrous to sparsely pubescent, inside with one small gland at base between the lobes. Corolla white to pinkish white, rotate, waxy; corolla lobes triangular-ovate, apex acute, spreading when in full bloom, margin slightly revolute; coronal scales purple-red, fleshy. Pollinia yellow, obliquely oblong, apex obtuse, margin smooth. Pistil with 2-ovaries, glabrous.
