The leaflets of Sophora pseudoacacia have 8-12 pairs, opposite or nearly opposite, paper-based, oblong or oblong, blunt and round at both ends, awn tip at the apex, depression at the upper part of midvein and obvious uplift at the lower part. The Yellow locust has 7 - 9 pairs of leaflets, which are oval or oval in shape. They are similar in size.
Sophora pseudoacacia is a raceme growing on the top, the number of flowers is more dense, the bracts are drill shaped, the calyx is bell shaped, and the Corolla is yellow, which is nearly round. The Yellow locust is also a raceme growing in the axil of the upper part of the branch. The bracts are oval and the sepals are oval. The flower colors of the two are almost the same. The petals are bright yellow to dark yellow, oval to obovate.
