Introduction of Pei Lan:Fortune Eupatorium Herb or Herba Eupatorii.

TCM Herbalism:Medicinals and Classifications. ✵The TCM herbalism is also known as pharmaceutics of Traditional Chinese Medicine, or Chinese pharmaceutics, is the branch of health science dealing with the preparation, dispensing, and proper utilization of Chinese herbs. It is majorly composed of Introduction of Chinese Medicinals, Classification of Chinese Herbs, Formulas, and Patent medicines.

Classifications of Herbs:Fragrant Odor for Resolving Dampness Herbs.

 TCM Herbs Icon08 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.

 
Herba Eupatorii(Fortune Eupatorium Herb).

Herba Eupatorii Pin Yin Name: Pèi Lán.
 English Name: Fortune Eupatorium Herb.
 Latin Name: Herba Eupatorii.
 Property and flavor: neutral, pungent.

 Brief introduction: The herb Herba Eupatorii is the aerial part of Eupatorium fortunei Turcz.(family Compositae), used to resolve damp for relieving nausea, vomiting, and abdominal distension, especially in cases of summer afflictions. The herb is commonly known as Fortune Eupatorium Herb, Herb of Fortune Eupatorium, Herba Eupatorii, or Pèi Lán.

 Botanical source: Official herbal classics and other famous herbal classics defined the herb Herba Eupatorii(Fortune Eupatorium Herb) as the aerial part of (1). Eupatorium fortunei Turcz. It is a plant of the Eupatorium genus, the Asteraceae family, Campanulales order. This commonly used species is introduced as:

 Eupatorium fortunei Turcz. (1).Eupatorium fortunei Turcz.:
 Botanical description: It is commonly known as Eupatorium chinense L.var.tripartitum Miq., or Pèi Lán. Perennial herbs, 40~100 cm tall. Rhizome transverse, reddish-brown. Stem erect, green or reddish-purple, base stem up to 0.5 cm, branches few or only at stem apex with corymbose branches. All stem branches sparsely pubescent, inflorescence branches and peduncle densely hairy. Middle stems and leaves are larger, trifid, total petiole 0.7~1 cm long. Middle lobes are larger, oblong-oblong-lanceolate, or oblong-lanceolate, 5~10 cm long, 1.5~2.5 cm wide, apex acuminate, lateral lobes isomorphic to middle lobes but smaller, upper stems and leaves often undivided; Stems and leaves undivided, lanceolate or oblong-lanceolate or oblong, 6~12 cm long, 2.5~4.5 cm wide, petiole 1~1.5 cm long. All stems and leaves smooth on both sides, glabrous without glandular points, pinnately veined, margin coarsely or irregularly serrate. Stem leaves gradually smaller below middle, basal leaves flowering withered.

 Eupatorium fortunei Turcz. Inflorescences are mostly arranged in cymes, 3~6 cm in diameter. Involucre campanulate, 6~7 mm long; Involucral bracts 2~3 layers, imbricate, outer layer is short, ovate-lanceolate, middle inner bracts gradually long, ca. 7 mm, oblong; All bracts purplish red, glabrous without glandular points, apex obtuse. Flowers white or reddish, corolla ca. 5 mm long, glandular without outside. Achene dark brown, oblong, 5 arrowed, 3~4 mm long, glabrous and glandular; Crested white, ca. 5 mm long. Its fruiting period is from July to November.

 Eupatorium fortunei Turcz. Ecological environment: The plant grows in thickets or streams. It is rare in the wild, more cultivated. The wild plant grows by roadside thickets and gully roadside. Resources distribution: The plant distributes in the lower reaches area of the Yangtze River, the Zhujiang river area, southwest, the Hanjiang river area. It also grows in other areas of East Asia include southern Korea, Japan.

 Growth characteristics: The plant Eupatorium fortunei prefers a warm and humid climate, resistant to cold, afraid of drought, avoid waterlogging. The temperature is lower than 19℃, the growth is slow, grows rapidly at high temperature and humidity season. The soil requirements are not strict, it is appropriate to choose loose fertile, good drainage sandy loam for cultivation.

 Eupatorium fortunei Turcz. Characters of herbs: Stem cylindrical, 20~100 cm long, 2~5 mm in diameter. The surface is yellowish-brown or yellowish-green, with distinct nodes and longitudinal edges, internodes 3~7 cm long. The quality is crisp, the section pulp ministry white or hollow. Floor opposite, much wrinkled and fragmented, leaves whole, usually 3-lobed, lobed oblong or oblong-lanceolate, margin serrated, surface greenish-brown or dark-green. It is fragrant and slightly bitter. The herbs with tender leaves, many leaves, the color green, the rich aroma are the better.

 Pharmacological actions: The essential oil of Herba Eupatorii has an inhibitory effect on the influenza virus, and the oral extract of Herba Eupatorii can cause the estrous cycle of mice to stop temporarily, and the ovulation is inhibited, the water decoction has an antibacterial effect.

 Medicinal efficacy: Resolving dampness with aromatics, clear summer heat, dispel dirty, wake up spleen and appetizer, release the summer, relieving exterior syndrome and relieving summer-heat, harmonize the middle energizer, resolving dampness, regulating menstruation. It is indicated for turbid damp obstructing in the middle energizer, affection from summer-heat and dampness, dampness pathogen accumulated internally, cephalea of cold and heat, epigastric distention and fullness, vomit and throw up, nausea and vomiting, sweet and cloying in mouth, bad breath, much saliva, summer dampness exterior syndrome, head distension and chest tightness, irregular menstruation.

 Administration of Herba Eupatorii(Pèi Lán): 
 
Reference: Administration Guide of Herba Eupatorii(Pèi Lán)
TCM Books: Internally:3~9 grams(CP),Internally:water decoction,1.5~3 qian(about 4.5~9 grams),fresh herb 3~5 qian(about 9~15 grams) or prepare to pill,powder(DCTM),Internally:water decoction,6~10 grams,fresh herb could be 15~20 grams(CHMM).

 
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References:
  • 1.Introduction of Pei Lan:Fortune Eupatorium Herb or Herba Eupatorii.
  • 2.TCM Books:DCTM(Dictionary of the Chinese Traditional Medicine),CHMM(Chinese Herbal Materia Medica).

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