The difference between Robinia pseudoacacia and Robinia pseudoacacia

1. Leaf Difference

The leaves of Robinia pseudoacacia are pinnately compound, 15 to 30 cm long, with short soft hairs on the rachis. There are 5 to 7 pairs of leaflets, which are elliptical, ovate, nearly circular or broadly ovate, 1.8 to 5 cm long and 1.5 to 3.5 cm wide.

The leaves of Sophora japonica are pinnately compound, with 7 to 19 pieces, and the leaves are elliptical or ovate-oblong. The leaves are about 3 to 6 cm long, dark green with a shiny surface.

2. Flower Differences

The inflorescence of Robinia pseudoacacia is axillary. Except for the corolla, the flowers are covered with purple-red glandular hairs and white fine hairs. There are 3 to 8 flowers, the peduncle is 4 to 8 cm long, the bracts are ovate-lanceolate, 5 to 6 mm long, the calyx is purple-red, obliquely bell-shaped, the corolla is red to rose-red, the standard petal is nearly kidney-shaped, about 2 cm long, about 3 cm wide, and concave at the tip.

The flowers of Sophora japonica are densely grown in racemes, the flowers are red, and 200 to 500 small flowers can bloom at the same time.