1、 Leaf difference

The leaves of mountain bean root only have 3 leaflets, the petiole is 4 to 4.5 cm long and has short villi. The leaflets are thick paper, oval, 8 to 9.5 cm long and 3 to 5 cm wide. The apex of the leaves is short acuminate or blunt round, and the base is wide wedge-shaped

Honeysuckle leaves are papery, oval or rectangular oval, with sharp or gradually sharpened tips at the top, and round or subcordate at the base

2、 Flower difference

The root raceme of mountain bean is 6 to 10.5 cm long, the total pedicel is 3 to 3.5 cm long, the pedicel is 0.5 to 0.7 cm long, all of which are pubescent, the calyx is cup-shaped, the lobes are blunt triangular, the Corolla is white, and the flag petals are oblong

The total pedicel of honeysuckle is usually solitary in the upper leaf axil of small branches. The Corolla is white, sometimes the base is slightly red to the sun, and finally turns yellow gradually