1、 Blade difference

There are 3-8 pairs of small leaves of rain tree, which gradually become smaller from top to bottom, in an oblique long circle, about 2-4 cm long and 1.1.8 cm wide. There are 3-5 pairs of feathers, about 15 cm long, and the total petiole is about 15-40 cm. The acacia tree has 10-30 pairs of leaflets, which are linear to oblong, which is much smaller than the former. There are 4-12 pairs of feathers, and the total petiole is about 3-5cm long

2、 The difference between flowers

The flower of rain tree is a head like inflorescence, growing in the leaf axil. The color of the flower is rose red, about 5-6 cm in diameter, and the total pedicel is about 5-9 cm long. The flowers of Acacia tree are head inflorescences, which will be arranged into large panicle at the top of branches. The color of flowers is pink, the Corolla is slightly short, the lobes are triangular, and the calyx and corolla are pubescent