Erect glabrous perennial to 60 cm high. Branches flattened and sharply 2-angled. Leaves well-spaced, narrowly elliptic to broadly obovate, 2–4 cm long, shorter than internodes, much reduced towards apex, entire, sessile by broad base. Flowers in long-pedunculate open terminal cymes; pedicels 5–10 mm long, slender, medially bi-bracteolate. Sepals ovate, 3 mm long, acute, glabrous, caducous. Petals broadly elliptic, c. 10 mm long, glabrous, pink. Stamens: filaments compressed-terete, glandular-verrucose particularly at apex, ciliate; anthers minutely apiculate. Disc narrow. Ovary woolly; style pyramidal or conical, c. 0.5 mm long, glabrous; stigma minute.