Erect rounded shrub, 0.9-2.6 m tall, non-sprouting. Branchlets sericeous at flowering. Leaves flat, twisted at base, linear to narrowly obovate, 4-9.7 cm long, 2.5-5 mm wide, glabrescent or sparsely sericeous; marginal veins prominent; longitudinal veins 1 (rarely 3) above, 3 below. Inflorescences a solitary axillary umbelliform raceme, with 16-24 flowers; pedicels pink, glabrous. Perianth pink or white. Pistil 6.5-8 mm long; gland a small flap, 0.3-0.5 mm high. Fruit ovate-elliptic, 1.2-3 cm long, 0.9-1.4 cm wide, scarcely beaked but apiculate. Seed obliquely ovate, 8.5-13 mm long; wing extending broadly down one side of body, narrowly down other, dark greyish brown with black patches and streaks.