Catalpa, a tree of Catalpa, is15m high. Crown umbrella-shaped, straight trunk, opposite leaves, sometimes whorled, broadly ovate, nearly equal in length and width, tapering at the top, heart-shaped at the base, whole or shallowly wavy, rough upper and lower leaves, slightly pilose, and long petiole. Panicle terminal; Calyx buds are spherical, corolla bell-shaped, pale yellow, filaments are inserted on corolla tube, and anthers are bifurcated; Style filiform, capsule linear, drooping, oval seeds, long hair at both ends.

The main value of catalpa

ecology

Catalpa is a graceful tree with dense leaves, which is suitable for street trees and shade trees. It is full of flowers and fruits, and clusters of long fruits are covered with branches, and the fruit period is more than half a year. It also has strong noise elimination, dust retention, air pollution resistance, sulfur dioxide resistance, chlorine gas resistance, smoke and dust resistance and other properties. It is a good environmental protection tree species and can be used to build ecological landscape forest.

economy

Wood is suitable for sleepers, bridges, telephone poles, cars, boats, potholes and buildings, high-grade floors, furniture (boxes, cabinets, tables, chairs, etc. ), waterwheels, wooden barrels and other materials. It is also suitable for joinery, art design, toys and musicians. The ancients cherished catalpa wood, with paulownia as the piano panel and catalpa wood as the piano bottom, which was called "the land of children's catalpa" and regarded as the top grade in the piano. The ancients loved to plant mulberries and used mulberries to represent their hometown. Because Catalpa bungeana is easy to sow, propagate and raise seedlings, it can be used as rootstock to rapidly propagate Catalpa bungeana.

officinal

Bark and leaves can be used as medicine, insecticide and feed. "Qunfangpu" records: "White catalpa is used as medicine, which is bitter in taste, cold and non-toxic. It can cure heat toxicity, eliminate three worms, treat eye diseases, vomiting and all warm diseases." Bark and leaf decoction can treat crop pests such as rice borer and rice planthopper. Leaves can cure pig sores. Seeds and fruits are human medicines, which have diuretic effect and can be used to treat gastropathy, nephropathy, wet peritonitis and edema.

Catalpa plant culture

So is the so-called "Tian Tong Di Zi". In ancient times, it was thought that Mo Mu was good at catalpa, whose books were famous for "catalpa materials" and whose gifts were famous as "catalpa people". I like to plant mulberry and catalpa bungeana trees next to my house, thinking that they are tools for health and death, so I have named my hometown mulberry so far. In ancient times, the so-called catalpa bungei carpenter often said the same thing.