Tree, up to 35 m, 65 cm diam. at 5 m. Nodal appendages extremely small, present on very short straight ridges adjoining the insertion of the petiole. Axillary buds 0.5—1(— 1.5) mm long, blackish, rather densely hairy. Petiole 7.5-10 mm. Leaf-blade 6-17 by 1.7-6.5 cm, base rounded to narrowly cuneate, margin slightly undulate, apex acutish to shortly acuminate; above yellowish green or brownish, midrib nearly flat to slightly protruding, sometimes at very base a little sunken; beneath glaucous-papillose, secondary nerves 5-8 pairs; glands 6-12, situated halfway between midrib and margin or near midrib, 0.3-0.5 mm diam., the basal ones mostly larger. Inflorescences about as long as the leaves; axes flattened at base, blackish, rather densely shortly hairy; lower bracts (sub)opposite. Pedicel 3-4.5 mm, very densely more or less appressedly shortly hairy. Sepals shortly rather sparsely appressedly hairy outside, (sub)glabrous inside; outer sepals 2.2-2.9 by 2-2.8 mm; inner sepals 3.1-3.6 by 2.5-3.2 mm. Petals brownish orange when dry, the longest one 10-12.5 mm; carina shortly appressedly hairy outside along median veins, further glabrous outside. Stamens: anthers 0.3-0.4 mm long, sparsely hairy at base. Ovary subsessile, shortly appressedly hairy; style sparsely appressedly hairy at very base only, further glabrous; ovules 4. Fruit more or less apple-shaped, up to 8 cm diam., the very short pedicel enveloped by the pericarp; pericarp very hard, in mature fruit up to 3 cm thick when dry. Seed 1 (or 1-more' according to NG, l.c.), up to 2 cm diam.
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