KEY TO THE SPECIES

1Leaves 2- (or 3-)jugate, rarely 1-jugate towards the top of twigs or below the inflorescences. Hypanthium 6-10(-16) mm long, usually about the same length as the calyx lobes. Style c. 4 cm. Pods 8.5-15(-28) by 4-5(-7.2) cm
1'Leaves 4-jugate, rarely associated with some 2-, 3- or 5-jugate ones. Hypanthium 3-4 mm long, shorter than the calyx lobes (usually 6-8 mm long). Style 2-3.5 cm. Pods 15-19(-40) by 6-7(-9) cm