Guanshu, also known as Guanguo, Xanthoceras sorbifolia, Carica papaya and deciduous trees, belongs to Xanthoceras of Sapindaceae. Most of them grow in Shaanxi, Ningxia and Inner Mongolia in the north of China. Its wood is dark red, with clear texture and hard texture, so it is called "dragon wood". In the famous Yang Jiajiang, Yang Zongbao's story "Take three dragon trees from woodcut", and the dragon tree is Xanthoceras sorbifolia Bunge.

Xanthoceras sorbifolia leaves are narrow oval, serrated, with white flowers, fragrant nose and few fruits. It is said that it bears one fruit in nine years. The fruit is green, slightly round or spherical, and the seeds are yellow outside and white inside, like broad beans. The fruit is edible and oily, and has the functions of improving memory and preventing and treating Alzheimer's disease. It is a national key protected tree species.

The flowering period of the official tree is April-May in spring, and the fruit maturity is July-August in spring. When flowering, the inflorescence is large and the flowers are dense. In spring, the trees are full of white flowers, and the flowering period can last for more than 20 days. It is a rare small flowering tree. The fruit of the official tree has high industrial value and nutritional value, and the oil content in seeds and nuts is extremely high. In addition to processing edible oil, it can also be used as industrial raw materials such as advanced lubricating oil, advanced coating, plasticizer and cosmetics.

Legend of fruit tree

In 2009, yongcheng city Cultural Relics and Tourism Bureau was surprised to find an ancient and rare Xanthoceras sorbifolia. This fruit tree is located in a Taishan Temple in Mengmiao Village, Taiqiu Town, an ancient town with a history of more than 100 years. It is very rare.

This Xanthoceras sorbifolia Bunge in Mengmiao Village, Taiwei Town, is intoxicating when the silver flowers are in full bloom, and its fragrance is fragrant. According to the local elders, Xanthoceras sorbifolia Bunge in Mengmiao started to bear fruit in 1958. When the fruit was ripe, the young pioneers of the village primary school gave the Xanthoceras sorbifolia Bunge to Chairman Mao for tasting, which was deeply loved and recognized by the local people.

This story adds mystery and legend to Xanthoceras sorbifolia Bunge.

Baidu encyclopedia-Xanthoceras sorbifolia Bunge

The People's Government of Henan Province-The Dragon Tree in Yang Jiajiang's Story "Appears in the Millennium Ancient Town of Henan"