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Leaves 16–70-foliolate; leaflets 2–12 × 0.5–3 mm, linear or linear-oblong to obovate-oblong, retuse to rounded and mucronulate at the apex, obliquely rounded at the base, glabrous (rarely ciliate in some Angolan specimens), densely minutely pellucid-dotted; main nerve central; petiole and rhachis together 1–6.5 cm long, glabrous or pubescent; petiolules 0.5 mm long; stipules 4–15 × 1–3.5 mm, linear to ovate, acuminate, not appendaged or with slight traces of an appendage, deciduous.
Inflorescences axillary and/or terminal, branched or simple, sometimes aggregated to form leafy panicles, 3-to usually many-flowered; peduncle 5–20 mm long, densely pubescent; rhachis 3–13(24) cm long; pedicels 2–7 mm long, densely pubescent; bracts 2–3-fid, 4–7 × 3–4.5 mm, elliptic, often ciliate, soon falling; bracteoles 5–7 × 2–3.5 mm, ovate, glabrous, sometimes ciliolate.
Fruit of 1 or 2 articles joined by a very narrow neck, each article elliptic, one margin slightly curved or straight, the other strongly curved, 8–12 × 5–8 mm, compressed at first, glabrous, smooth and reticulate, but sometimes slightly rugulose when adult.
Calyx glabrous or almost so, 2-lipped; lips 8–10 × 4–5 mm, ovate-oblong or elliptic, one emarginate, the other slightly 3-lobed.
Standard orange, 16–19 × 9–12 mm, violin-shaped, emarginate; wings orange; keel petals orange, not laciniate.
Seeds chestnut-brown, 4.5–5.5 × 3–3.5 × 1.5 mm, elliptic-reniform, compressed; hilum small, broadly elliptic.
Stems covered with dense viscid tubercular-based hairs, later glabrescent or practically glabrous and ridged.
An erect branched shrub or undershrub 0.6–3.6 m tall.
