Tree to 25 m tall, 35 cm diameter. Twigs with few short stellate hairs and/or simple erect hairs up to 3 mm long, to subglabrous. Leaves 2-5(-7)-jugate. Petiole 2-6 cm, internodes of rachis 1.5-5 cm, with tomentum as on the twigs. Leaflets ovate-oblong or elliptic to oblong, 4.5-16 by 3-6 cm, apex acute and slightly to distinctly acuminate, base obtuse to rounded and only slightly or not decurrent; margin serrate to subentire; petiolule 1-2 cm in terminal leaflets and up to 5 mm in lateral ones; small stipels sometimes present; secondary veins 9-16 on either side of midrib; leaflet blades above mostly glabrous with venation slightly prominent, beneath shortly stellate-hairy and/or hirsute, mainly along midrib and nerves, or glabrous, sometimes also with glandular trichomes, the venation prominent; tuft-domatia in axils of secondary veins absent or occasionally weakly developed. Stipules reniform to orbicular or broadly ovate, 3-15 by 3-18 mm, rounded at apex, entire, sessile, glabrous above with tomentum beneath similar to that on lower surface of leaflets. Inflorescence paniculate/thyrsiform, up to c. 50(-76) by 30 cm; at distal or subdistal nodes; indumentum on axes varying from sparsely short stellate-hirsute and/or hirsute with hairs up to 3 mm long on peduncle to densely and shortly stellate-hirsute in distal branchlets. Flowers pedicellate, the pedicels 0.2-0.7 mm long. Sepals 0.6-0.8 by 0.4-0.5 mm, fairly densely stellate-hirsute outside. Petals oval to ob-ovate to oblanceolate, 0.6-1.1 by 0.3-0.4 mm. Stamens with filaments 1.3-1.7 mm long and anthers 0.2-0.3 by 0.2-0.4 by 0.1-0.2 mm. Disc 0.1-0.2 mm high, 0.1 mm thick. Ovary 3-(or 4-)carpellate, 0.4-0.7 by 0.4-0.8 mm, ± densely stellate-hirsute, each cell with 8-14 ovules; style 0.3-0.6 mm. Fruit with valves c. 3.5 mm long, 1.3 mm wide, with several seeds. Seeds including wings to c. 1.8 mm long, glabrous.
In lower montane forest (including Castanopsis and Nothofagus forest) extending into the lowland, foothill forest, between 450 and 2350 m; also in secondary forest of the same zone.
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