Tree or shrub 7–30 m. tall, with grey or brown, rough or smooth scaly thick bark; trunk sometimes buttressed; young branches with large leaf-scars. Leaves sessile, obovate or oblong-lanceolate to oblong-obovate, (5–)16–40(–56) cm. long, (2–)10–18(–25) cm. wide, obtuse, broadly rounded, slightly emarginate or even somewhat acuminate at the apex, narrowed to a ± rounded-truncate base, coriaceous, glabrous, often shining, entire; larger leaves often alternating with smaller ones. Racemes terminal, erect, 2–30 cm. long, 3–20-flowered; pedicels 4–6(–10) cm. long. Calyx 2-lobed, the lobes 3–5 cm. long, 2–3.8 cm. wide. Petals white, broadly elliptic, 5.5–8.5(–?10) cm. long, 2–4.5 cm. wide. Outer stamens numerous, 6–12(–15–?18) cm. long, mostly pink above. Ovary 4-angular, 4(–5)-locular, with 4(–5) ovules in each locule; style 9–13.5(–15–?17.5) cm. long. Fruit broadly pyramidal, 4-angular, 8.5–12 cm. long and wide; pericarp thick, glossy, the endocarp fleshy-fibrous. Seed oblong, 4–6 cm. long, 2.5–5 cm. wide, subtetragonous, tapering to an emarginate apex. Fig. 1/8.