Tree up to 13–14 m. high; branchlets tomentellous. Leaf-lamina 6–9 × 3·5–6 cm., elliptic to oblong or obovate-oblong, obtuse to slightly emarginate and sometimes acute or apiculate at the apex, rounded to slightly cordate at the base; upper surface minutely tuberculate-subreticulate, slightly scaberulous with straight or nearly straight generally simple pachydermatous hairs developed on minute, white tubercles and sometimes mixed with smaller penicillate ones; lower surface fulvous-pubescent with straight or curled meso-pachydermatous (medium-thick-walled) hairs on the nerves, veins and reticulation, and with interreticular areoles covered with minute stellate hairs; midrib very thick and prominent beneath; lateral nerves in 10–12 pairs (with a weak tendency to the formation of short subsidiaries), nearly straight, some of them furcate near the apex, nerves and bifurcations reaching the margin of the leaf; reticulation very prominent and forming deep cavities; petiole thick, 1–2 cm. long. Inflorescences of subsessile condensed multiflorous clusters forming large terminal panicles, up to 15 cm. long, fulvous- or rufous-tomentose; pedicels 1–3 mm. long. Sepals 3–4 mm. long, densely sericeous-tomentose. Petals 8–10 mm. long, densely sericeous-tomentose. Stamens with anthers not produced at the apex. Fruits densely crowded (see TAB. 81 fig. A1) at the ends of the branches, 7–9 mm. in diam., subglobose, reticulate, tomentose, conical at the apex; wings 2·5–4 × 1–1·5 cm., reddish-purple, generally narrowly obovate-oblong to spathulate.