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Key to Sesbania
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39948
1 Legume 3-8 cm long, 0.6-1.6 cm wide; legume ×-section laterally compressed or obviously tetrangular (the corners flanged or prominently winged); seeds 1-10 per legume. | |
4 Corolla 9-25 mm long; legume quadrangular or 4-winged; seeds 4-10 per legume; leaves with 10-35 pairs of leaflets; [sect. Daubentonia]. | |