Tree to 15 m tall, trunk to 20 cm dbh; bark smooth, pale brown. Branches lenticellate, glabrous even when young. Leaves: petiole 0-50 mm long, usually with only a thin lamina at the base of the blade in the very shortly petiolate or sessile leaves, glabrous; blade thin, elliptic to obovate, 8-40 by 2-16.5 cm, 2-4 times as long as wide, apex acuminate or acute, base cuneate or decurrent onto petiole, glabrous above and beneath, 10-20 pairs of secondary veins, ascending towards margin, tertiary venation scalariform and reticulate. Inflorescence mostly few-flowered, sometimes many-flowered, 8-30 cm long, glabrous; peduncle 4-20 cm long; pedicels 5-30 mm long. Flowers poor or pleasant smelling. Calyx of a tube and erect lobes, fleshy, 10-20 by 4-12 mm, 1-3 times as long as wide; calyx tube noticeably wider than corolla tube, 7-14 mm long, 1.5-5 times as long as lobes, glabrous outside; lobes obovate to orbicular, 2.5-6 by 2.5-8 mm, 0.5-1.7 times as long as wide, apex rounded. Corolla white to yellowish; tube 9-24 mm long, 0.7-2 times as long as calyx, 0.5-1.3 times as long as lobes, glabrous inside and outside; lobes elliptic to obovate, 9-40 by 10-37, 0.8-1.5 times as long as wide, apex rounded to emarginate. Stamens inserted high in the corolla tube; anthers 3-6 by 1.2-2.5 mm. Disk 5-lobed, c. 1 mm high. Ovaries 1-2 mm high, glabrous. Fruit of free to united carpels (these may be present on a single tree) up to 12 by 15 by 10 cm, small when not fused, green to yellowish, with pale brown warts. Seeds with an orange aril, 8-13 by 4-7 by 3-6 mm.
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Tree to 8 m high. Leaves with petiole 20–25 mm long; lamina lanceolate-ovate to elliptic-ovate, to 36 cm long, to 14 cm wide, cuneate, acute, discolorous, dark green above, pale green below; secondary veins 18–24 each side of midrib, spaced 7–30 mm apart, obscure above. Flowers 25–35 mm long, 40–70 mm diam.; pedicels 12–18 mm long. Sepals obovate, 0.5–1.7 mm long. Corolla white or cream; tube 9–24 mm long, 3–9 mm diam.; lobes obovate to elliptic, 9–40 mm long, 10–37 mm wide. Stamens inserted 2–7 mm from top of tube. Disc annular. Fruit transversely elliptic, c. 12 cm long, 15 cm wide, 10 cm thick.
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