Introduction of Ou Jie:Lotus Rhizome Node or Nodus Nelumbinis rhizomatis.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Lotus Rhizome Node, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Nelumbo nucifera Gaertn., with a detailed introduction to the botanical features of this plant species, the growth characteristics, and ecological environment of this plant species, the features of the herb Lotus Rhizome Node, its pharmacological actions, medicinal efficacy, and administration guide.

Nodus Nelumbinis rhizomatis(Lotus Rhizome Node).

Nodus Nelumbinis rhizomatis:herb photo Pin Yin Name: ǒu Jié.
 English Name: Lotus Rhizome Node.
 Latin Name: Nodus Nelumbinis rhizomatis.
 Property and flavor: neutral in nature, sweet, puckery.

 Brief introduction: The herb Nodus Nelumbinis rhizomatis is the dried node of the rhizome of Nelumbo nucifera Gaertn., used to cool blood, stopping bleeding, and remove blood stasis for the treatment of nasal bleeding, hemoptysis, hematuria, and abnormal uterine bleeding. The herb is commonly known as Nodus Nelumbinis rhizomatis, Lotus Rhizome Node, ǒu Jié.

 Lotus Root Botanical source: Common herbal classics defined the herb Nodus Nelumbinis rhizomatis(Lotus Rhizome Node) as the dried node of the rhizome of the Nymphaeaceae family (water lily family) plant species (1). Nelumbo nucifera Gaertn. This commonly used species is introduced:

(1).Nelumbo nucifera Gaertn.

 Botanical description: The Nelumbo nucifera Gaertn., is a plant of the Nymphaeaceae family (water lily family) and Nelumbo genus, it is commonly known as "Nelumbo nucifera", or "Lian", perennial aquatic plants. Rhizomes are mostly grown in water sediments. The leaf-shaped shield is round, dark green surface, waxy white powder, gray-green back, full and wavy. The petiole is cylindrical, dense barbed. Flowers are solitary on the top of the pedicel and above the high water surface. They are single, double, and heavy; flowers vary in white, pink, crimson, lavender, or inter-color; stamens; pistil is isolated, buried in an inverted cone-shaped spongy torus, the receptacle surface with a majority of scattered honeycomb holes, gradually expanded after fertilization as a lotus, there is a small nut (seed) in each hole. The flowering season starts from June to September and closes every morning. The fruit ripening period is from September to October. There are many lotus cultivars, which can be divided into three major systems: lotus, lotus, and lotus depending on the use.

 Nelumbo nucifera Gaertn.:flowering lotus The rhizomes of the lotus are planted on the mud at the bottom of the pond or river, while the lotus leaves rise to the surface. A few centimeters of flower stems on the surface of the water grow flowers. The lotus generally grows to 150 cm in height and extends horizontally to 3 meters. The lotus leaf is up to 60 cm in diameter. The eye-catching lotus has a diameter of up to 20 cm. There are many cultivars for lotus, ranging from snow-white to yellow or pink.

 Lotus can be bred with seeds or rhizomes. In particular, lotus seeds can survive for thousands of years. Some scientists have cultivated some thousand-year-old lotus seeds, and the lotus that has been produced is still alive. The two ancient lotus seeds found in the Yangshao cultural site have a history of more than 3,000 years, but they are too precious to be cultivated.

 Lotus Rhizome Node:herb photo Characters of herbs: The herb is cylindrical or shortly cylindrical, slightly enlarged in the middle, 2~4 cm long, and about 2 cm in diameter. The surface is grayish-yellow or grayish-brown, the nodes are enlarged, there are many residual fibrous roots or round fibrous root marks, occasionally dark reddish-brown scales residues are seen, the surfaces of the residual parts at both ends of the nodes have longitudinal stripes. The herb is light, the texture of the herb is hard, and it is not easy to break. There are 7~9 large round holes in the center of the cross-section, with different sizes. The herb has a slight odor, it tastes slightly sweet and puckery.

 Nelumbo nucifera Gaertn:lotus flower Ecological Environment: The Nelumbo nucifera Gaertn., grows in pond and rivers, lakes, etc. Geographical distribution: This species is mainly distributed in China provinces from south to north where there is water and is commonly cultivated in water gardens. This species is also distributed in Southeast Asia.

 The Nelumbo nucifera Gaertn., likes relatively stable and calm water, avoiding fluctuations and disparities and large waves. The water depth should not exceed 1.5 meters. The optimum temperature of stems and leaves in the growing season is 25~30 °C (Celsius, or 77~86 degrees Fahrenheit). It is required to have sufficient sunshine and it is not appropriate to cultivate indoors for long periods. The soil is preferably made of organic-rich clay loam. Lotus seeds have a long lifespan, and the millennium ancient lotus seeds can still sprout new strains. Lotus breeding more commonly used in the ramets can also be sown. Should be carried out after warming in the spring. The main diseases of the lotus are rot disease, leaf spot disease, etc. The insect pests are include aphids and scarabs.

 Nelumbo nucifera Gaertn:flowering lotus Building a pond with lotus plants and building bridges and bridges along the water constitutes a scenic view of the lotus. It is a traditional method of Chinese gardens. Scenic spots are widely used throughout the country. It also applies to garden water, purified water, or potted plants. The lotus root and lotus seeds are rich in nutrients. Raw and cooked foods are suitable. Lotus root stems can be processed into wolfberry powder, candied fruit, and so on. Lotus seeds have a soothing effect, often used as a soup or candied fruit, to nourish the people. Lotus petals and young leaves can be eaten. All parts of lotus can be used as herbs.

 Pharmacological actions: ①.hemostasis: shorten the time of blood clotting.

 Medicinal efficacy: Hemostasis(stanch bleeding) and remove blood stasis. It is indicated for hememesis (spitting blood), hemoptysis, hemoptysis (coughing blood), hematuria (blood in urine), hemafecia (pass blood in stool), blood dysentery, uterine bleeding, etc.

 Administration of Nodus Nelumbinis rhizomatis (ǒu Jié): 
Reference: Administration Guide of Nodus Nelumbinis rhizomatis (ǒu Jié)
TCM Books: ①.Internally:9~15 grams; ②.Internally:water decoction,3~5 qian (about 9~15 grams), extract juice or prepare to powder; ③.Internally:water decoction,10~30 grams; extract juice with fresh herb, 60 grams fresh herb is extracted juice to take with water, or prepare to powder.

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