Matted perennial with creeping stems to 6 cm long, rooting at nodes, and continuing to grow beyond the flowering region. Stems sparsely pubescent and with lines of close curved hairs decurrent from leaf bases. Leaves crowded, usually opposite, narrowly elliptic, 0.5–1.5 cm long, shallowly and remotely toothed, acuminate at apex, long-tapering to base. Flowers with inner surface of hypanthium glabrous. Petals 3–4.5 mm long, purplish pink. Capsule c. 2–2.5 cm long, subglabrous or sparsely pubescent; pedicel to 2 cm long. Seeds obovoid, 1–1.5 mm long, with a pale cellular rim on the adaxial side, comose.