An erect, much branched shrub or small tree up to 2 m tall. Young branches short-woolly, densely leafy. Axillary short-shoots soon developed on branch ends. Leaflets linear-pinoid, 7-15 mm long, ± incurved, weak, subterete or ± angular, acute, subglabrous or ciliate. Inflorescences compact, subglobose, head-like umbels of 10-30 flowers. Bract fused to the pedicel, emerging near the calyx, elliptic or narrowly obovate, 6.5-8.5 x 3.2-5 mm, carnose, tomentose on base and margins, otherwise glabrous. Pedicel 4-6 mm long, tomentose. Bracteoles linear, 5-7.5 x 1-1.8 mm. Calyx tomentose on the base, otherwise glabrous; lobes ovate, 4-5.5 x 2-3.5 mm, acute, carnose, veiny. Petals carnose, bright yellow. Standard blade 10-12 x 8-9 mm, carnose, keeled along the midvein, acute-acuminate, basally puberulous on the back, otherwise glabrous. Wing blades lunulate-rostrate, 9.2-10.2 x 3.5-4.2 mm, basally ciliate below, otherwise glabrous. Keel rostrate; blades 9-10 mm long, 3-4 mm broad, almost pointed, ciliate above and (basally) below, otherwise glabrous. Pistil pubescent on the upper basal parts of the ovary; ovules 2; curved. Pod ovate, ±7 x 3.5 mm, nearly black.
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Like A. carnosa but leaves sparsely hairy, flowers 10-30, keel rostrate and calyx hairy on base, lobes glabrous. Pods nearly black.
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