Trees, up to 35 m high, up to 1 m diam.; buttresses conspicuous. Bark greyish brown, scaling off into small pieces. Branchlets terete, lenticellate, smooth, sometimes striate, greyish brown, darker towards the apex, up to 6 mm thick; leaf-scars conspicuous, leaf-traces sometimes visible. Leaves: narrowed part (petiole) 2-2.5 cm long, but actually leaves sessile; blade obovate to obovate-elliptic, (10-)15-33 by (6-)7.5-15 cm, papyraceous, turning red before falling, glossy, base decurrent, margin crenulate or bluntly denticulate, apex acuminate, acumen up to 1.5 cm long, obtuse; midrib strongly prominent beneath, prominulous above, nerves 12-14 pairs, making an angle of c. 60° with the midrib, prominent beneath, slightly raised above, arcuately anastomosing near the margin, often branched, tertiary nerves distinct; reticulations dense, veinlets ending in a mucro at the sinus. Inflorescences racemes, glabrous, generally many-flowered, up to 12 cm long, glabrous; rachis up to 5 mm thick. Pedicels glabrous, 1-2.5 cm long, 2-3 mm thick, the lowest pedicels subtended by ordinary leaves; bracteoles ovate to ovate-oblong, 5-6 by 6-7.5 mm, coriaceous. Calyx: tube turbinate, 1.5-2 cm long, smooth (fresh), glabrous, striate when dry; lobes semiorbicular to oblong, unequal, 10-15 by 8-10 mm, coriaceous, margin entire, tip obtuse. Petals obovate, 4.5-6 by 2-3 cm, membranaceous, pale green. Stamens: tube c. 1 cm high, white; free part 4.5-5.5 cm, light red at the base, white higher up; anthers c. 1 by 0.75 mm. Disc a rim of c. 1 mm high. Style c. 6.5 cm long, in fruit the base slightly swollen; stigma 4-lobed. Fruits smooth, subglobular, without basal neck, c. 5.5 cm diam. (fresh), obovoid to ovoid when dry, pericarp fibrous; containing a sticky substance. Seeds numerous, obliquely ovoid, angular; testa brown, glossy; radicle spirally convolute.
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