Shrubby slightly woody herb, 1-1.5 m tall, glabrous, slightly glaucous. Leaves 3-foliolate; leaflets obovate-elliptic to obovate, 1.6-3 x 0.9-1.7 cm; petiole longer than the leaflets. Stipules subulate, 1.5-2.5 mm long. Racemes few-flowered, with a slender markedly zig-zag rhachis; bracts concave, lanceolate, 4-7 mm long. Calyx 16-18 mm long, glabrous; lobes narrowly attenuate-triangular, nearly twice as long as the tube. Standard ovate, bright yellow; wings ± three-quarters as long as the keel; keel rounded about the middle, narrowed to; medium length bluntly pointed beak, 2.3-2.4 cm long. Legume oblong-clavate, rather abruptly contracted to the ±2.5-2.8 cm long stipe, usually 5.5-6.5 cm long, glabrous. Seeds not seen.
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