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Leaves with 7–10(13) leaflets arranged alternately or rarely in opposite pairs; leaflets (2)3.5–6.5(9.5) × (1.5)2–3.5(4) cm, ovate to elliptic or the distal ones obovate, rounded to cuneate and ± asymmetrical at the base, rounded to emarginate at the apex; terminal leaflet usually rather broader than the laterals; stipels usually inconspicuous and caducous, 1–2(4) mm long; leaflets glabrous except on the underside of the midrib, or sometimes with varying development of hairs on the lower or both surfaces (see notes below); petiole, rachis and petiolules rusty-brown or rarely greyish puberulous to tomentose, sometimes ± glabrescent.
Petals white, greenish-white or violet with dark purple veins; standard 13–15 mm long, wings slightly longer.
Tree up to 17 m high, or sometimes a large shrub, deciduous, flowering with young leaves.
Inflorescence (including calyces) usually rusty-brown or rarely greyish tomentose.
Calyx (excluding hypanthium) 7–10(11) mm long, including lobes (5)6–8 mm long.
Ovary, pods and seeds as in generic description.
