Much-branched shrub or tree up to 3-5 m. tall; branches ascending, ∞; branchlets us. close-set, strict, compressed, striate, glab., 1-2-(3) mm. wide. Lvs (1)-3-(5)-foliolate, glab. or nearly so; lflts up to 6 × 4 mm., obcordate-cuneate, or lobes acute, sinus narrow. Infl. of 1-3 racemes per notch, subumbellately 3-5-fld, on peduncles up to 10 mm. long, us. less. Fls ± 5 × 4 mm., on glab. pedicels c. 2 mm. long. Calyx c. 2 × 2 mm., glab. or nearly so; teeth minute, broad-triangular. Standard with purple centre and veins; keel whitish, with greenish base, auricles rounded; wings white, purple-veined, auricles bluntly pointed. Ovary glab. Pods obliquely broad-oblong, (8)-9-10 × 4-5 mm., subcompressed, dark brown to black; beak stout, subulate, almost pungent, 3-4-(5) mm. long, somewhat obliquely placed. Seeds 2-4, pale to yellowish green, ± heavily black-mottled (some plants otherwise similar have seeds with distinctly red ground-colour).
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