Yu Rui, as a garden ornamental flower cultivation, began in the Kaiyuan and Tianbao years of Xuanzong of the Tang Dynasty, and is most famous in Yu Rui, the capital of Chang 'an Tang Dynasty. According to the Song Dynasty's Annals of Chang 'an, "An Tang Chang Guan's old jade core was planted by Princess Tang Chang". According to textual research, Princess Tang Chang was the daughter of Li Longji, Emperor Xuanzong of the Tang Dynasty. Her date of birth and death is unknown, but it is inferred that she planted trees around 750 AD.
The pistil planted by Princess Tang Chang in Tang Changguan was over 60 years old in Yuanhe years. These trees died in Tang Xizong (around 880 AD), when they were 130 years old.
Yurui was very important in the Tang Dynasty, and it was planted in the Tang Dynasty, Jixian Academy and Hanlin Academy. Song Huzai's "Tiaoxi Fishing Hidden in Conghua" says: Tang Changguan Yu Rui and Helin Temple Rhododendron, two flowers flourished in the Tang Dynasty and became famous all over the world. When "Taiping Guangrui Fairy" was in full bloom, if Yao Shu, one day a beautiful woman took several ladies-in-waiting to watch and fold flowers, and everyone thought it was from the palace. And they took the flowers and went with the wind, only to know that the fairy came down to earth and the fragrance lingered for months. Poets in the middle Tang Dynasty, such as Bai Juyi, Yuan Zhen, Liu Yuxi and Wang Jian of Zhang Jihe, all sang poems about Yu Ruiguan of Tang Chang. Every time the ancient poetry is recited, it is from the white color of the jade core. Wang Jianshi: A green jade carving, the floating gallery is pale. The female crown came to look for incense at night and saw the waning moon in front of the steps.
In the Tang Dynasty, there were other places besides Chang 'an, but the locals didn't know its good name and didn't cherish it. When Li Deyu was an observer in western Zhejiang, he found that there was a Yushu in Zhaoyinshan, Zhenjiang, so he wrote a nostalgic poem entitled "Seeing Yushu in Zhaoyinshan is a gift to Shen Ge, an old doctor in Jiangxi" and gave it to Shen Chuanshi, a calligrapher who was a Beijing official with him: "Yushu is in the sky, and Mrs. Jin is in the past." Falling in the snow, the dense leaves droop ... In the title and poem, he wrote: "This tree is unknown to Wu people, so it is named because of its reward." There is this tree in front of Dr. Shen, a physician. Every flower falls, empty for a long time, and the party gathers. On the day when the doctor mows, everyone should play together. "Later, Shen Chuanshi wrote a poem of thanks," Appreciating the Shangshu in the west of Zhejiang Province, and seeing Yu Ruishu in a hidden mountain with nine feet, that is, seeing things ":"I treat gold with sincerity, and I take Yushu Yin. As the snow approaches, the tobacco leaves shake deeply. The element calyx is dense year by year, and the declining ability is invading day by day ... "... Wang Qi also found wild pistils in deep valleys. Its five-character ancient poem "Yu Ruihua" can be used as evidence: "Yu Sheng Rui forbidden forest, and the land is also expensive. What's the difference between Ponzi and Confucius in the boundless valley? Pure fragrance is far-reaching, plain color is not enchanting. The mountains are shrouded in smoke, and Qiong Yao is gloomy. The deeper the rock, the more hidden it is. Please watch the chorus in the Tang Dynasty, and the vulgar eyes don't despise it. "
Through the analysis of a large number of poems in Tang Dynasty, we can judge the basic form, ornamental value, main biological habits and geographical distribution of roses. In other words, Yu Rui is a deciduous tree. When the leaves are unfolded in late spring, dense flowers bloom, the flowers are as white as jade, and the stamens are numerous and obvious. Both Liu Yuxi's poem "Xue Rui Qiong Si Man Chun" and Zhang Ji's sentence "Carve jade in a tree" can appreciate the name of "Yu Rui". It also has other names, such as Osmunda japonica, Osmunda japonica, Shu Qi and Yushu. The fragrance of flowers is light and small, and the jade dust flies like fragrant snow when it falls, which is more resistant to viewing. This tree is also a longevity tree. In the Tang Dynasty, it was found that in addition to Chang 'an, it was also cultivated in Jiangsu, Zhejiang and other places. People don't know its elegant name and don't cherish it. Therefore, when the pistil cultivated in Chang 'an died, especially after the war of the Five Dynasties and Ten Kingdoms in the late Tang Dynasty, the pistil of Chang 'an disappeared, and this famous flower tree was lost from then on.