Introduction of Huang Lu:Smoketree Twig or Folium et Ramulus Cotini.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Smoketree Twig, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Cotinus coggygria Scop.var.cinera Engl., 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 Smoketree Twig, its pharmacological actions, medicinal efficacy, and administration guide.

Folium et Ramulus Cotini(Smoketree Twig).

Cotinus coggygria:growing shrub Pin Yin Name: Huánɡ Lú, or Huánɡ Lú Zhī Yè.
 English Name: Smoketree Twig, Twig and leaf of Common Smoketree.
 Latin Name: Folium et Ramulus Cotini.
 Property and flavor: cold, pungent, bitter.

 Brief introduction: The Herb Folium et Ramulus Cotini is the dried leaf and branch of Cotinus coggygria Scop.var.cinera Engl.(family anacardiaceae), used for treating hepatitis with jaundice, dysentery, and eczema with pruritus. The herb is commonly known as Folium et Ramulus Cotini, Smoketree Twig, Huánɡ Lú.

 Botanical source: Common herbal classics and official herbal classics defined the herb Folium et Ramulus Cotini(Smoketree Twig) as the dried leaf and branch of (1). Cotinus coggygria Scop.var.cinera Engl. It is a plant of the Cotinus Genus, Anacardiaceae family, Sapindales order. This commonly used species is introduced as:

(1).Cotinus coggygria Scop.var.cinera Engl.

 Cotinus coggygria:growing tree Botanical description: It is commonly known as Huánɡ Lú, or Guāng Yè Huánɡ Lú. Deciduous shrubs or trees, up to 8 meters tall. Leaves are alternate, obovate, 3~8 cm long, 2.5~6 cm wide, apex rounded or concave, base rounded or broadly cuneate, entire, glabrous or pubescent only on lower veins, lateral veins 6~11 pairs, apex often bifurcated; Petiole slender, 1.5 cm long. Large panicle terminal; Anthesis, ca. 3 mm; 5 sepals, lanceolate; 5 petals, oblong, as long as sepals; 5 stamens, shorter than petals; Ovary superior, with 2~3 short lateral styles. The ear is 5~20 cm long, with most sterile flowers long and slender pedicels, becoming purple and green feather shape. Stone fruit renal, 3~4 mm in diameter, red when ripe. It is flowering in April, fruiting in June.

  Cotinus coggygria:smoketree leaves It prefers light, also endure half shade; Cold-resistant, drought resistant and could grow in barren and alkaline soil, not resistant to water moisture, should be planted in deep soil, fertile and good drainage sandy loam. Fast growth, developed root system, sprout strong. Strong resistance to sulfur dioxide. In autumn, when the temperature difference between day and night is greater than 10 ℃, the leaves turn red.

 Ecological environment: The shrub often grows on sunny slopes. It is native to the southwest and north area of China, the tree mainly distributes in the north, southwest, and the lower reaches area of the Yangtze River. It also distributes in Southern Europe, Syria, Iran, Pakistan.

 Growth characteristics: The plant grows in the hillside forest at an elevation of 700~1620 meters above sea level.

 Characters of herbs: The leaves are papery and mostly wrinkled, broken, and the intact ones are flattened from oval to obovate, with a length of 3~8 cm and a width of 2.5~10 cm. The herb is gray green, both sides are white pubescent, and the back surface is densely covered with the veins; The petiole is 1~4~7.5 cm long. The herb has a slightly fragrant aroma, it tastes puckery and slightly bitter. The herb which has more leaves, green color and no branches is better.

 Pharmacological actions: ①.anti-inflammatory effect, has the effect of inhibiting cell proliferation effect on the rat and mouse formaldehyde paw edema, and increase the resistance of capillaries, ineffective on egg white edema; ②.effect of convergence and antibacterial and can be used externally to treat wounds; ③.treat gastroenteritis.

 Medicinal efficacy: Clear heat and dampness, clear heat and detoxify, activate blood, and relieve pain. It is indicated for the treatment of jaundice, icteric hepatitis, water and fire scalds, dermatitis rhus, erysipelas, conjunctivitis, the fall and bruise hurt.

 Administration of Folium et Ramulus Cotini(Huánɡ Lú): 
Reference: Administration Guide of Folium et Ramulus Cotini(Huánɡ Lú)
TCM Books: ①.Internally:1~3 qian(about 3~9 grams), for hepatitis treatment, adult dosage 1 liang daily(about 30 grams),half dosage for infant, decoct twice and combined,take in the morning and at night.Externally:use twig,leaves, wash with water decoction, or mashed the leaves and apply stick at the affected area.

Herbs Clearing Heat and Drying Dampness.

 Introduction: Herbs Clearing Heat and Drying Dampness: an agent or substance bitter in taste and cold in property that is effective for eliminating heat and dampness, usually used in the treatment of diseases caused by damp-heat, such as acute jaundice, acute dysentery, urinary infection, eczema, boils and abscesses.
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