Tung refers to tung tree, which is a folk name. Tung oil tree is a unique economic forest tree species in China, and it is also one of the four major woody oil tree species, with a cultivation history of more than 1000 years. There are six kinds of tung trees planted in the world, among which the three-year-old tung trees and five-year-old tung trees originated in China are the most common.
Platanus acerifolia is a deciduous tree with a height of15m; The leaves are turquoise and smooth. Leaves heart-shaped, palmately 3-5-lobed, diameter 15-30 cm. Lobes triangular, tapering at the top, heart-shaped at the base, glabrous or slightly pubescent on both sides, 7 basal veins, and petioles as long as leaves.
Extended data:
Platanus acerifolia "China Platanus acerifolia" belongs to Platanus genus of Platanus family, and it is also a deciduous tree with a height of15m. The trunk is straight and the bark is green and smooth. Originally from China, it is cultivated in all provinces in the north and south.
Platanus acerifolia grows rapidly, the wood is suitable for making musical instruments, the bark can be used for making paper and rope, and the seeds can be eaten or pressed for oil. Because of its smooth trunk and beautiful leaves, it is a famous ornamental tree. In ancient China, it was said that Phoenix was not a phoenix tree. Many legendary guqin are made of phoenix tree, which plays an important role in China culture. The writer Feng Zikai's article of the same name "Buttonwood Tree" is a very good one. Platanus acerifolia as an ornamental tree species has been introduced to Europe, America and many other countries.
Morphological characteristics of deciduous tree Paulownia, up to 20m, sparse crown, oblate. Leaves ovoid or broadly ovoid, length 15-30cm, width 10-20cm. The apex is acuminate, the base is heart-shaped or nearly round, the whole leaf is 3-lobed, and the back of the leaf is densely covered with gray-white dendritic hairs. Petiole length10-18cm.
The spike length is about 30cm, the calyx length is 1.6-2cm, and it is shallowly divided to1/3; Corolla funnel-shaped, bell-shaped, purple, 7-9.5 cm long, with glandular hairs or stellate hairs on the outside of corolla tube, hairless and purple spots on the inside. Capsule ovoid, 3-5 cm long, with stellate hairs, persistent calyx disk; The seed wing length is 0.4-0.5cm, the flowering period is April-May, and the fruiting period is 65438+ 10.
References:
Baidu encyclopedia-buttonwood
References:
Baidu Encyclopedia-Shu Tong