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Leaves 16–32(40)-foliolate; leaflets 1–3.5 × 0.4–1.2 cm, oblong, rounded and mucronulate at the apex, obliquely rounded at the base, ciliate on margins and main nerve beneath, ciliate-serrulate towards the apex, otherwise glabrous; petiole and rhachis together 7–14(22) cm long; petiolules 1 mm long; stipules 8–10 × 3.2–5 mm, ovate or elliptic, acute, not appendaged, densely ciliate, soon falling.
Fruit 5 cm long, oblong-elliptic, sessile, straight, beaked, 6–7-jointed, the suture straight or smoothly curved, not constricted between the articles; articles 3–12 × 11–17(19) mm, irregularly oblong, compressed, hispid with yellow tubercular-based hairs, venulose.
Inflorescences axillary, 3–7-flowered; peduncle 2.5–9 cm long; rhachis 2–9 cm long; pedicels 1–2 cm long, glandular hairy; bracts often 2–3-fid, 8–11 × 4.5–9 mm, ovate, hairy, soon falling; bracteoles 6–8.5 × 1.5–2.5 mm, lanceolate, soon falling.
Seeds dark brown or black, 6–7 × 4.5–5 × 2.8 mm, truly reniform with strongly curved outer edge and marked sinus containing the curved elliptic hilum.
Standard orange-yellow, 2–4 × 2.5–3 cm, rounded, ciliolate at the apex; wings orange-yellow; keel paler orange-yellow, the petals laciniate.
A small shrub 1.2–4.5 m tall, often with swollen pithy floating stems similar to A. elaphroxylon but without spines.
Calyx hairy, 2-lipped; lips 13–18 × 6–12 mm, oblong, one emarginate, the other 3-lobed.
Stems densely hispid with golden-brown tubercular-based glandular hairs.
Flowers large, yellow.
A shrub
