Frequently four leaflets in each compound leaf. Leaflet blades about 7-15 x 3-13 cm. Lateral veins forming a somewhat obscure series of loops inside the blade margin. Leaflet stalks somewhat swollen and transversely wrinkled. Stipules present on very young shoots.
Only one petal fully developed, about 12 mm long, the others absent or very much reduced, resembling staminodes. Stamens, style and stigma red, anther filaments sparsely hairy. Staminodes 4-7, red. Ovary green, style about 16 mm long.
Pods flat, about 8.5-23 x 4-8 cm. Seeds flat, about 3 x 2 cm.
Cotyledons +/- orbicular, about 20 mm diam., thick and fleshy, venation not visible. First pair of leaves compound, usually with four leaflets. At the tenth leaf stage: leaves usually with four leaflets, each shortly ovate and unequal-sided, apex acute, base obtuse, glabrous. Seed germination time 12 to 41 days.