Large puberulent, soft-wooded shrub to 2.5 m high. Petiole to c. 15 cm long. Lamina 5-20-(25) × 3-12 cm on adult shoots, larger on some vegetative shoots, ovate-oblong, entire, not sinuate, becoming glabrate; base often asymmetric; apex acute or mucronate. Fls pendent or inclined obliquely downwards, very fragrant at night; pedicels glabrate or glabrous. Calyx 8-12 cm long; lobes 5, subequal and not spathaceous, not splitting, acute. Corolla 27-33 cm long (excluding attenuate lobe apices 1-3 cm long), single, white; tube cylindric and scarcely widening in lower ?-1/2, otherwise funnelform. Filaments hairy in lower part; anthers 2.5-3 cm long. Fr. not seen.