1、 Blade difference

The leaves of pods are papery, in wide obovate, wide ovate or obovate shape, about 3-10 cm long, with sharp tips at the top, round to micro cardioid or blunt at the base, sometimes wedge-shaped, toothed serrations at the edge, sharp tooth ends, hairs on the top and bottom, the densest hairs on the veins, yellow or nearly colorless gland spots, and short petioles, about 10-15 mm long

The leaves of Hydrangea are nearly leathery or papery, obovate or broad oval, relatively large and wide, about 6-15 cm long and 4-11.5 cm wide. The top is sharp and pointed, the base is wide wedge-shaped or blunt round, the edges have coarse teeth from above the base, both sides are glabrous or only the lower midvein has pubescence, and the petiole is thick and strong, about 1-3.5 cm long

2、 The difference between flowers

The pod is a cyme in the form of compound umbrella, and the flower color is white

Hydrangea is an umbrella shaped cyme with various colors, usually pink, white or light blue