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1 Leaflets coriaceous, 1.0-1.4× as long as wide, rounded (or obtuse) at the apex; seeds 1.5-2.0 cm long, mottled lighter and darker brown; [native, of beaches and coastal strands]
..2 Seeds white to off-white; plant an erect herb; legumes 15-35 cm long × 3-3.5 cm wide
..2 Seeds brown to dark olive; plant a twining herbaceous vine; legumes 6-20 cm long × 2-3 cm wide