It can be distinguished from its congeners by its having leaflets grouped in 2 to 6 pairs, 2 to 4mm wide by 10 to 20mm long; calyces that are characterized by having mostly strongly asymmetric bifurcate hairs; a standard (the large posterior petal seen in legume flowers) 15 to 17mm long; and legumes that 12 to 20 mmlong.