Soaponia

, also known as the saponin tree, is one of the unique tree species of the genus Saponaria in the family Hemataceae in my country. It grows vigorously and is dioecious. The female tree has a strong ability to produce pods (saponia). . Honey locust fruit is a natural raw material for medicine, food, health care products, cosmetics and detergents; honey locust seeds can digest food and appetizer, and contain a kind of vegetable gum (guar gum) which is an important strategic raw material; honey locust thorn (soap needle) Contains flavonoid glycosides, phenols, and amino acids, and has high economic value.

Deciduous tree, 15-30m tall, with gray-black trunk bark and shallow longitudinal lobes. The trunk and branches often have thorns. The thorns are conical and multi-branched. They are thick and straight. The branchlets are gray-green with prominent lenticels and winter buds. Often superimposed, with an even number of pinnate compound leaves, with 3-7 pairs of alternate leaflets. The leaflets are long oval, with an obtuse apex, a rounded base, slightly skewed, thin leathery, with serrated edges, and both sides of the midrib on the back. The petioles are white pubescent, the flowers are mixed, axillary, in racemes, the pedicels are densely covered with tomentose, the calyx is bell-shaped and covered with tomentose, the flowers are yellow-white, and the calyx petals are 4 in number. The pods are straight and thick, 10-20 cm long, not twisted, black when ripe, covered with frost powder, flowering in May-June, fruit ripening in September-October.