Erect to spreading shrub, 0.5-3 m tall, ?non-sprouting. Branchlets glabrous or sparsely appressed-pubescent at flowering. Leaves narrowly obovate-elliptic, rarely almost linear, often falcate, 8-21 cm long, 9-35 mm wide, narrowly cuneate at base, entire, sometimes undulate, acute or obtuse; longitudinal veins 5-9 above and below; secondary veins reticulate, conspicuous, rarely ±obscure. Inflorescence solitary with 40-70 flowers; pedicels much longer than perianth, glabrous. Perianth cream-white. Pistil 4.8-5.8 mm long; gland present. Fruit obliquely ovate-elliptic, ±straight or slightly sigmoidal, 2.5-3.5 cm long, 1.2-1.5 cm wide, obscurely beaked, prominently apiculate. Seed obliquely rhombic-obovate, 20-24 mm long; wing extending narrowly down both sides and around base of body.