Shrub or tree; bark smooth, pale purplish, branches drooping, pubescent or glabrous. Leaves ovate, elliptic oblong or elliptic, 10-20 x 5-10 cm, base obtuse rounded or acute, rarely unequal, acute or acuminate at the apex or sinuate, membranous, sub-coriaceous with 10-16 pairs of lateral nerves, glabrous or somewhat pubescent beneath, dark green above, paler beneath, subsessile or sessile, petiole c. 2 mm long. Inflorescence a terminal, corymbose, many flowered cymes, 7-15 cm across, pedicel variable in length, upto 1.25 cm long, bracts small, linear acute, pubescent or ciliate, c. 2.5 cm long. Flower white or creamy 2.5-5 cm across, puberulous. Calyx 2-3.5 mm long, divided nearly to the base, lobes unequal, linear-lanceolate, acuminate, pubescent ciliate. Corolla tube selender, puberulous outside, hairy within, 8-12 mm long, lobes equalling the tube, oblong, rounded, overlapping to the right in bud. Style short, stigma oblong. Follicle, 20-40 x 0.5-1 cm, pendulous, glabrous, often slightly curved and dotted. Seeds c. 1.25 cm long, linear oblong, light brown, minutely rugose.