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Leaves 6–20 cm long; petiole 10–25 mm long, rachis deeply canaliculate above with raised and winged margins; leaflets in 5–8(10) overlapping or contiguous pairs, the middle leaflet pairs the largest, the proximal ones 2–7 × 1–3.5 cm, the middle ones 4–8 × 1.5 cm, the distal ones 3–6 × 1.2–2.5 cm, narrowly ovate, oblong-lanceolate to narrowly elliptic, acute, emarginate to retuse at the apex, obliquely cordate at the base, midvein subcentral or central, 3–4 secondary veins diverging from the base.
Stipules persistent, 10–20 × 1–5 mm, shortly connate at the base, linear to falcate; auricles 8–35 × 5–15 mm, persistent independently of stipules, reniform to semicircular, palmately nerved.
Inflorescences in terminal and/or axillary panicles up to 4 cm long; bracts 3–3.5 × 2–2.5 mm, ovate to oblong, acute at the apex.
Sepals 5–8, 4–8 × 1–3 mm, obovate, lanceolate, oblong, or linear, densely pubescent on the margins.
Small to medium tree to 8 m tall; bark deeply or reticulately fissured, flaking in thick scales.
Pods 9–23 × 3.5–5 cm, oblong, with spreading or suberect ventral flanges up to 10 mm wide.
Flowers 7–15 × 4–6 mm; pedicels 2–15 mm long; bracteoles 11–20 × 5–10 mm, orbicular.
Ovary 8–10 × 2–3 mm, up to 12-ovulate, stipe to 4 mm long; style to 25 mm long.
Stamens 12–18(20), united to 6 mm at the base; filaments 25–45 mm long.
Petals 1–4, 3–7 × 0.4–1.5 mm, filiform, linear or spathulate.
Seeds up to 11, 20–25 × 15–20 mm, round to oblong.
Dormant axillary buds much flattened.
Young branchlets densely pubescent.
