Leaves: petiole 3-13 cm, petiolules 0.5-1.5 cm, brown villose; leaflets chartaceous to coriaceous, lanceolate, elliptic, or ovate (or obovate), 6-14 by 3-9 cm, apex faintly acute or with an acumen 3-10 mm long, base cordate or rounded (or cuneate), upper surface dull, both surfaces glabrous or sparsely hairy, but nerves on lower surface, especially midrib, hairy, domatia present; nerves: 3-6 pairs (at an angle of c. 45° with the midrib). Thyrses brownish tomentose. Flower buds ellipsoid, 6-9 mm long, with short brown hairs. Bracteoles c. 2.5 by 1.5 mm. Perianth in anthesis greenish, tinged purplish or pinkish. Tepals acute, up to 2 mm acuminate, both sides with short brown hairs, especially so towards the top; outer tepals 9-11 by 2-4 mm, 5-nerved, inner ones 9-10 by c. 2.5 mm, 3-nerved. Filaments ± filiform, slightly hairy, c. 4 mm long; staminal appendages including the c. 0.5 mm long stipe 2-2.5 mm long, inflated, ventrally with a pointed apex, dorsally broadly cleft, rim slightly denticulate; interstaminal glands present. Fruits reddish in living plants, cinnamon-coloured when dry, nut 2.5-3 cm long, 4-winged, but only one pair fully developed, the other pair obsolete or ridge-like; wings lingulate (subsp. appendiculata) or hemi-orbicular (subsp. stenoptera).
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