Introduction of Guang Huo Xiang:Cablin Patchouli Herb or Herba Pogostemonis.

TCM Herbalism:Medicinals and Classifications. ✵The article gives records of the herb Cablin Patchouli Herb, its English name, Latin name, property and flavor, its botanical source one plant species, ①.Pogostemon cablin (Blanco)Benth., 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 Cablin Patchouli Herb, its pharmacological actions, medicinal efficacy, and administration guide.

Herba Pogostemonis(Cablin Patchouli Herb).

Herba Pogostemonis:herb photo Pin Yin Name: Guǎnɡ Huò Xiānɡ.
 English Name: Cablin Patchouli Herb.
 Latin Name: Herba Pogostemonis.
 Property and flavor: slightly warm, pungent.

 Brief introduction: The herb Herba Pogostemonis is the dried aerial part of Pogostemon cablin(Blanco)Benth.(family Labiatae), used to resolve damp for treating nausea, vomiting, and diarrhea, especially in cases of summer afflictions. The herb is commonly known as Herba Pogostemosis, Guǎnɡ Huò Xiānɡ.

 Botanical source: Official herbal classics and other famous herbal classics defined the herb Herba Pogostemonis(Cablin Patchouli Herb) as the dried aerial part of (1).Pogostemon cablin (Blanco)Benth. It is a plant of the Pogostemon genus, the Lamiaceae family, Tubiflorae order. This commonly used species is introduced as:

(1).Pogostemon cablin (Blanco)Benth.

 Pogostemon cablin Blanco Benth.:growing leaves Botanical description: It is commonly known as Mentha cablin Blanco or Guǎnɡ Huò Xiānɡ. Perennial aromatic herbs or subshrubs. Stem erect, 0.3~1 meters tall, tetraphenous, branched, tomentose. Leaves rounded or broadly ovoid, 2~10.5 cm long, 1~8.5 cm wide, apex obtuse or acute, base wedge-shaped gradually tapering, margin with irregular crevices, grassy, dark green above, tomentose, sparse with age, below pale green, tomentose, lateral veins ca. Petiole 1~6 cm long, tomentose.

 Pogostemon cablin Blanco Benth.:drawing of plant and flowers Inflorescences 10 to 20 flowered, lower slightly detached, densely ascending, 4~6.5 cm wide, 1.5~1.8 cm spikes, spikes terminal and axillary, densely long tomentose, pedicels 0.5~2 cm long, densely tomentose; Bracts and bracteoles linear-lanceolate, slightly shorter than calyx or nearly as long as calyx, densely tomentose. Calyx tubular, 7~9 mm long, long tomentose externally, shorter tomentose internally, dentate subulate lanceolate, about 1/3 as long as calyx tube. Corolla purple, ca. 1 cm long, lobes all outer hairy. Stamens exserted, bearded. Style apex subequal 2-lobed. Disc ring. It is flowering in April.

 Pogostemon cablin Blanco Benth.:flowering plant Ecological environment: The plant grows on hillsides or roadsides. The plant prefers a high temperature, wet, sunny environment. The plant grows slowly when the temperature is below 17 ℃, it can withstand a short period of 0 ℃ low temperature. It could not bear dryness, also should avoid water. It is suitable to grow in loose, fertile, and well-drained slightly acidic sandy loam. The plant was native to tropical Asia, it distributes in Sri Lanka and some other regions of Southeast Asia. In China, it distributes in the Zhujiang river area, Hainan, and Taiwan.

 Cultivation biological characteristics: the plant prefers high temperature and humid climate, the annual average temperature 24~25 ℃ is the most suitable for growth, the temperature lower than 17 ℃, the growth is slow, the plant can withstand 0 ℃ transient low temperature. Rainfall should be abundant and evenly distributed. Annual rainfall should be 1,600-2,400 mm. They are fond of sunshine, but they must be shaded properly at the seedling stage and the early stage of colonization. Branches are easily broken in a typhoon. It is advisable to cultivate sandy loam with loose, fertile soil and good drainage.

 Growth characteristics: The plant Pogostemon cablin prefers a high temperature and humid climate and is most suitable for growth in an area with an average annual temperature of 24~25℃. When the temperature is below 17℃, the plant grows slowly. The plant can withstand the short low temperature of 0℃. Rainfall should be abundant and evenly distributed, requiring annual rainfall of 1600~2400 mm. They are fond of sunshine, but they must be shaded moderately at the seedling stage and the initial stage of planting. After a certain amount of new roots and leaves grow, the shading is removed. Branches and leaves break easily in a typhoon. Loose, fertile, well-drained, and slightly acidic sandy loam soil is suitable for cultivation.

 Pogostemon cablin Blanco Benth.:growing shrubs Characters of herbs: The stem of the herb is slightly square column-shaped, multi-branched, and the branches are slightly tortuous. The stem is blunt and square, with a length of 30~60 cm, a diameter of about 2~7 mm, and an internode length of 3~13 cm. The cortex is grayish brown, grayish-yellow, or reddish-brown, and the surface is pilose, the texture of the herb is brittle and easily broken, with pith in the center of the fracture surface, the old stem near the base is cylindrical, with a diameter of 1~1.2 cm. The herb has brown or taupe cork bark. The leaves are opposite, shrunk into a ball, and after flattening, the leaves are egg-shaped or oval, 4~9 cm long and 3~7 cm wide, both surfaces are covered with gray-white fuzz; The apex is pointed or rounded, the base is wedge-shaped or rounded, and the edge has blunt teeth of irregular size; Petiole is thin and pilose, 2~4 cm long. The herb has a special fragrance and the leaves are slightly bitter. The herb of better grade has many leaves and a strong fragrance.

 Pharmacological actions: ①.bacteriostatic effect. Patchoulenone in vitro has an obvious inhibitory effect on fungi such as Leucidium albicans, Cryptococcus neoformans and Rhizopus nigricans, and also has a certain inhibitory effect on bacteria such as alpha-hemolytic streptococcus. The fresh juice of Pogostemon cablin leaves also has a certain inhibitory effect on the growth of Staphylococcus aureus, Staphylococcus alba, and Bacillus subtilis. Its fresh juice ear drops can treat acute experimental guinea pig external otitis caused by staphylococcus aureus. Patchoulenone can inhibit the growth of penicillium and other molds and can be used in oral liquid anticorrosive. ②.Calcium antagonism.

 Medicinal efficacy: Aromatics and eliminating turbidness, aromatic and eliminate dampness, appetizing and preventing vomiting, relieving exterior syndrome and relieving summer-heat. It is indicated for turbid dampness obstructing in the middle-energizer, vomiting of epigulosis, loss of appetite, heat dampness and tiredness, chest tightness and uncomfortable, chest tightness and nausea, cold dampness and heat stroke, abdominal pain and diarrhea, vomiting, diarrhea, nasosinusitis(acute and chronic sinusitis), headache, cold and heat headache caused by exogenous heat dampness, fever and drowsiness at the onset of damp-warm syndrome, tinea of hand and foot, etc.

 Administration of Herba Pogostemonis(Guǎnɡ Huò Xiānɡ): 
Reference: Administration Guide of Herba Pogostemonis(Guǎnɡ Huò Xiānɡ)
TCM Books: ①.Internally:3~9 grams; ②.Internally:water decoction, 5~10 grams, double dosage for fresh herb, better not decoct for long time, or prepared to pill, powder. Externally:proper amount, mouthwash with water decoction, or soaking the affected area, or grinded into fine powder and apply stick.

Fragrant Odor for Resolving Dampness Herbs.

 Introduction: Fragrant Odor for Resolving Dampness Herbs: a fragrant agent or substance herbs effective for resolving damp, often used in the treatment of damp syndrome marked by anorexia, lassitude, nausea and vomiting, distension in the chest and abdomen, greasy tongue coating and slippery pulse either in cases of febrile diseases or in other miscellaneous diseases.
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