Erect shrub or tree, 2-6 m tall, non-sprouting. Branchlets ±glabrous at flowering. Leaves flat, linear, slightly falcate, 4-16 cm long, 3.5-8 mm wide, finely striated, narrowly acute, bluntly mucronate, glabrous; veins 12-17 (-20) between prominent marginal veins. Inflorescence with 50-110 flowers; rachis 2-6 cm long, glabrous; pedicels glabrous. Perianth cream, glabrous. Pistil 4.6-8 mm long; gland broadly obovoid. Fruit 1-7 on elongated rachis, stalked, woody, obliquely ovate-acuminate, 1.7-3 cm long, 0.9-1.8 cm wide, prominently beaked (tip fragile, often broken), not keeled on ventral suture. Seed ±angular, obliquely obovate, 12-21 mm long, 6-9 mm wide; wing extending down one side of body only, blackish brown to black.