1、 Morphological difference

The length of ivy is generally between 3-20m. Its branches are grayish brown, with aerial roots on them, and the surface is relatively smooth. Its new branches are pubescent

The length of Parthenocissus is about 18m and its branches are thick. The old branches are mostly brown, and the new branches are mostly purplish red

2、 Blade difference

Ivy leaves are relatively small, with a length of 5-12cm and a width of 3-10cm. It has a petiole between 2-9 cm long, but no stipules. It is oval, with dark green on the front and light green or yellowish green on the reverse. There are obvious veins on both sides

The leaves of Parthenocissus are relatively large, with a length of 8-18cm and a width of 4-16cm. Its color is green, with serrations at the edge and a layer of white powder on the back. In autumn, its leaves will turn bright red and very gorgeous

3、 Flower difference

The inflorescence of ivy is umbel, with a diameter of 1.5-2.5cm. Its flowers have five petals, triangular ovate, with a length of 3-3.5mm, light yellow white or light green white

The inflorescence of Parthenocissus is cyme, with a length of 4-8cm. Its flowers are yellow and green in summer