Gleditsia is a deciduous tree or small tree, about 30 meters high, the color of the branches changes from gray to dark brown. The saponacia is smaller than the former, up to 25 meters, the color of the branches changes from purple brown to gray green.
The leaves of Gleditsia sinensis are a pinnate compound leaf, the leaflets are papery, which are ovate lanceolate to oblong. But the saponacia is one or two pinnate compound leaves, the small leaves are paper-based to thick paper, oval long circle.
The flower color of Gleditsia sinensis is yellow and white, and it is terminal or axillary in raceme, with 4 petals, which are oblong. The color of the flower is yellow green, with spikes and oval petals.
