Tree 16-45 m high, up to 60 cm dbh. Twigs, leaves, stipules, leaf rachises and inflorescence axes covered with dense rusty or golden brown villous-tomentose indumentum, the longest hairs up to 1 mm; older stems tomentose or puberulous, finally glabrescent. Leaves imparipinnate with (1-)2-4 pairs of lateral leaflets; total length up to 20 cm including a petiole 1-4 cm long; rachis segments 1-3.2 cm long; leaflets subcoriaceous, glabrous above and with an indumentum of short, scurfy hairs beneath, sometimes glabrescent; lateral leaflets elliptic to obovate, the largest 4-7.8 by 1.9-3 cm, base almost equal, ± sessile or shortly petiolulate, apex rounded or obtuse (acute in immature foliage); apical leaflet elliptic to obovate, 5-9(-11) by 1.9-3.6(-4.8) cm including base attenuate into a petiolule c. 1 cm long, apex rounded or obtuse; margin subentire to crenulate, with 20-25 notches on each side of the largest lateral leaflets; midrib ± flat above and prominent beneath, bearing villous to scurfy hairs; secondary and tertiary venation ± flat above and somewhat raised beneath. Stipules ± orbicular, recurved, up to c. 0.9 by 1.1 cm. Inflorescence 1 or 2 pairs of opposite dyads or tetrads, the apical bud between the central peduncles often continuing to grow vegetatively during flowering; sometimes a few successive nodes flowering simultaneously; peduncles 0.6-2.5 cm long, villous-tomentose; axes of racemes up to 11.5 cm long, tomentose. Flowers bisexual; pedicel 1-1.7 mm long, tomentose; calyx lobes 0.7 by 0.5-0.6 mm, tomentose on outer surface; corolla irregularly obovate to almost circular, 1-1.2 by 0.8-1 mm, apex rounded or irregularly emarginate, puberulous on outer surface; disc lobes 0.3-0.4 mm long, oblong, sometimes with thin flanges on either side to form an almost continuous ring; filaments 2.2-2.4 mm long; ovary 1.1-1.8 mm long, densely pubescent; styles 1.1-1.8 mm long, divergent then later straight; stigmas capitate, papillose. Capsule with valves 3-4 by 1.5 mm just prior to dehiscence; exocarp densely pubescent; calyx lobes persistent. Immature seeds 0.6-0.8 mm long, comose at both ends.
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