Small tree. Leaves elliptic to oblong, ca 13-16-nerved, 12-20 by 5½-10 cm, with rounded or obtuse, ± distinctly acuminate apex, obtuse to acute base, and nearly entire to distinctly dentate margin, entirely glabrous. Petiole 1½-4 cm long, with nearly circular to obovate wings. Wings up to 35 by 22 mm with rounded apex and entire margin, glabrous, wholly caducous. Flowers terminal, solitary, ca 10 cm diam. Sepals 8-9, the outermost ones only slightly smaller than those towards the centre, 3½-4 by 2½-3 cm. Petals unknown. Stamens in 2 groups, the outer group ca 260, ca 13 mm long, straight in bud, the inner group ca 75, ca 23 mm long, with their apex reflex-ed in bud. Carpels ca 15, ca 12 by 2 mm, with ca 20 mm long, recurved styles, each with 7-10 ovules. Fruit indehiscent, subglobose, 4-5 cm diam. including the enclosing sepals. Carpels ca 25 by 12 mm, 1-2-seeded. Seeds enclosed by a membranaceous aril.
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