Acacia Flower ScienceAlbizia julibrissin Duraz. It is a decidual tree of the Legume species, Albizia, native to southwest Asia and eastern Asia. It was also known as pomelo flower, horse tassel flower and examination flower.
The silktree flower was the flower bud or inflorescence of the legume plant silktree. The flower bud was mostly called the " silktree rice ", and the inflorescence was mostly called the " silktree flower ". Its flower head is wrinkled into a ball, the total peduncle is 3 - 4cm long, sometimes separated from the inflorescence, yellowish green and vertical stripes, covered with sparse hairy hair; The whole flower is densely covered with hairy hair, slender and curved, 0.7 - 1cm long, light yellow or yellow-brown in color, no peduncle or almost no peduncle; The calyx is cylindrical, with 5 small teeth at the tip; The corolla tube is about twice as long as the calyx tube, the tip is 5-lobed, and the lobes are lanceolate-shaped; The stamens were numerous, and the silk was slender, yellowish brown to yellowish-brown. The lower part was connate, and the upper part was separated, extending out of the corolla tube. Albizia julibrissin rice is mallet shaped, 2 - 6mm long, about 2mm in diameter of the inflated part, pale yellow to yellow-brown, all covered with hairy hair, the flower stalk is very short or absent; The calyx is cylindrical, with 5 small teeth at the tip; The corolla is not open; The stamens are numerous, slender and curved, and the base is connected and wrapped in the corolla.
The medicinal properties of the flower were mild and sweet. It was a representative flower herb in Chinese medicine that had the effect of calming the nerves. It had the effect of relieving depression and calming the nerves, regulating qi and appetizing the appetite, dispelling wind and improving eyesight, and promoting blood circulation and relieving pain. Its chemical components included flavanones, volatile oil, and polyose, among which flavanones were the main active components.
In terms of botanic characteristics, the tree was 4 - 15 meters tall, with a spread crown, angular twigs, and hairy or pubescent twigs, inflorescents, and leaf axes. Stipules are line-lanceolate-shaped; flower heads are arranged into panicles at the top of the branches; flowers are pink; calyx is tube-shaped; flowering period is from June to July; fruit period is from August to October. It grew in a warm, humid and sunny environment. It had strong adaptability to climate and soil. It was suitable to grow in fertile soil with good drainage, but it was also resistant to barren soil and dry climate. It was not resistant to waterlogging. It grew rapidly, liked light, liked warmth, was cold-resistant, drought-resistant, and was resistant to barren soil and mild saline-base. It had strong resistance to harmful gases such as sulfur dioxide and hydrogen dioxide. The method of reproduction is usually sowing. Seeds are collected between September and October. Pods with full seeds and no pests and diseases should be selected for seed collection. After drying and shredding, they should be stored in dry and vented places to prevent mold. In spring, seedlings should be raised. The seeds should be soaked for 8 - 10 hours before sowing, then taken out and sowed. The ditch distance is 60cm, and the soil is covered with 2 - 3 cm. After sowing, the soil should be kept moist. About 10 days after sprouting, the seed consumption per hour is about 150kg. After the seedlings are fully grown, the management work such as weeding, loosening the soil, and topdressing should be strengthened. In the spring or autumn of the second year, the seedlings should be transplanted at a distance of 3 - 5m. After transplanting for 2 - 3 years, the pine nests should be removed every spring and autumn to promote growth. Special treatment can also be done to the seeds before sowing to increase the rate of sprouting.
In terms of cultural significance, it was mentioned in the Legend of Zhen Huan. It represented lovesickness and love. The ancients called it the Acacia Tree. Its leaves spread out during the day and withered at night. It opened in the morning and closed at night. It was given the beautiful meaning of couples parting in the morning and closing at night, so it was called "Acacia Tree".
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