Tree, 18–35 m. tall, with thin, smooth, and pale yellowish-white or grey-brown bark, branchlets terete, glabrous, with scattered prominent lenticels.. Leaves simple, with mature blades broadly elliptic to oblong-or ovate-elliptic rarely broadly obovate, subacute to shortly acuminate, rounded or shortly and sometimes asymmetrically cuneate at the base, 5–17 cm. long, 3–10 cm. broad, subcoriaceous, glabrous; petioles 1–5.3 cm. long, glabrous.. Inflorescences axillary or terminal to short branches, 9–12-flowered, the branches and the calyx glabrous.. Corollas white or creamy white with chocolate-purple hairs on the lobes, tube 1–1.6 cm. long, scented.. Fruits at first ellipsoid but finally pear-shaped, 6 cm. long, 3–3.5 cm. in broadest diameter, with thick woody valves.. Seeds (including the unilateral membranaceous wing) flattened, lanceolate, 4 cm. long, 1 cm. broad.
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Flowers white or greenish white with crimson or purplish-brown markings at the base of the petals; sweetly fragrant
Forest tree to 100 ft. high