How to identify Menispermum dauricum? Detailed explanation of identification methods

I. Morphological identification

Menispermum dauricum is a perennial herbaceous flowering plant. The stem is relatively slender, with stripes, hairless on the surface, 2 to 10 mm in diameter, and the surface color is yellow-brown or black-brown, with relatively obvious longitudinal fissures and a relatively hard texture. The small branches are slender and cylindrical, with a green surface, curved, and can reach about 50 cm in length, about 0.3 to 0.8 cm in diameter, with the surface appearing yellow-brown to dark brown.

II. Leaf identification

The leaves are alternate, kidney-shaped or ovate, relatively rounded, about 5 to 12 cm in length, with little difference in width, and have 3 to 7 shallow lobes at the edges. Both sides are hairless, and the underside is covered with a white powder. The petiole is relatively long, about 3 to 10 cm or even longer, with stripes on it.