Erect shrub or small tree, 2.5-5 m tall, non-sprouting. Branchlets ±glabrous at flowering. Leaves flat, linear to narrowly oblanceolate, sometimes slightly falcate, 7-20.5 cm long, 3.5-26 mm wide, finely striated, obtuse to acute, broadly and sharply or bluntly mucronate, glabrous; veins 9-20 (-25), between prominent marginal veins. Inflorescence with 50-120 flowers; rachis 1.2-3 cm long, glabrous; pedicels glabrous. Perianth bright pale to deep pink, glabrous. Pistil 17-22 mm long; gland broadly triangular. Fruit 1-5 on thickened (but not elongated) rachis, stalked, woody, ±obliquely ovate-elliptic, 1.5-2.6 cm long, 1.2-1.8 cm wide, prominently (rarely obscurely) beaked, shortly apiculate, doubly keeled along ventral suture. Seed obliquely obovate-rhombic, 14-22 mm long, 7-12.5 mm wide; wing extending down one side of body only, often with laciniate margin, black to blackish brown.