1、 Morphological discrimination

Bat kudzu is a perennial herbaceous flower with slender stems, stripes, no hair on it, 2 to 10 mm in diameter, yellow brown or black brown on the surface, obvious longitudinal fissure on it, and hard texture. The small branches are slender cylindrical, green in appearance and curved, with a length of about 50 cm, a diameter of about 0.3 to 0.8 cm, and a surface of yellowish brown to dark brown

2、 Leaf discrimination

Leaves alternate, kidney shaped or oval in shape, relatively round, about 5 to 12 cm in length, with little difference in width. There are 3 to 7 shallow cracks at the edge, hairless on both sides, covered with white powder. Petiole is relatively long, about 3 to 10 cm or longer, with stripes on it