Judging from the appearance of the leaves. Toona sinensis leaves have light green roots and yellow-brown tips; The roots of Ailanthus altissima leaves are dark green, and the tips are grayish green.

Please click to enter a picture description.

The edges of Toona sinensis leaves have sparse serrations; The leaves of Ailanthus altissima don't. Leaf number. Ailanthus altissima has odd leaves and Toona sinensis has even leaves.

Please click to enter a picture description.

In other words, the number of each branch of Toona sinensis is always even. For example, six pairs, seven pairs and eight pairs are equal.

Please click to enter a picture description.

However, the number of branches and leaves of Ailanthus altissima is odd, always exceeding several pairs, and how long the upper end is to form six and a half, seven and a half, eight and a half, etc.

Please click to enter a picture description.

Distinguish from the smell Rub a leaf with your hand and smell it. Ai, commonly known as Ailanthus altissima. It looks like Toona sinensis, but it smells strange and unacceptable.

Please click to enter a picture description.

The trunk is different. The surface of Ailanthus altissima trunk is smooth and does not crack, while Ailanthus altissima trunk often peels off in strips.

Please click to enter a picture description.

Please click to enter a picture description.

Fruit is different. Ailanthus altissima fruit is samara, while Toona sinensis fruit is capsule. Vascular bundles are different. Observing the leaf scars, Ailanthus altissima has 9 vascular bundles and Toona sinensis has 5.

Please click to enter a picture description.