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Inflorescences few-flowered, dense, subcapitate; rhachis 2–3 cm long; peduncle 5.5–30 cm long; pedicels 3–12 mm long, occasionally appearing when plant is almost leafless; bracts deciduous, 1.5–3 mm long, oblong-lanceolate; bracteoles deciduous or subpersistent, 2–3 × 1.5–2 mm, oblong-ovate.
Standard yellow inside, flushed brownish, greenish or maroon outside, 0.6–2.3 × 0.6–2.6 cm, obovate or almost round, emarginate; wings yellow; keel pale yellow.
Seeds brown, 5–7 × 4.5–6 × 2.5–3.5 mm, oblong-ovoid or discoid, covered with a scurfy scaly indumentum, keeled around the longest circumference.
Perennial climbing, prostrate or erect subshrub or herb, 0.15–6 m long or tall from a woody rootstock, to 22 × 0.9 cm, producing a red exudate.
Calyx glabrous; tube 3–5 mm long; lobes short and rounded, 1.5–3 mm long, ciliolate, the upper pair forming an emarginate or bidentate lip.
Stems glabrous or puberulous or pubescent when young, often flowering when entirely leafless.
Pods 7–12 cm × 5–8 mm, margined, glabrous or with minute dot-like scales.