Introduction of Ju Hua:Flos Chrysanthemi or Chrysanthemum Flower.
✵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:Pungent-cool Exterior-releasing Herbs.
Introduction: Pungent-cool exterior-releasing herbs: an agent or substance herbs pungent in flavor and cool in property, which is usually used for treating a wind-heat exterior syndrome.
✵Till the date Oct 10th,2019, there are totally  kinds of common TCM herbs,  kinds of related plant species,  kind of insect species, are recorded in this category. These pungent-cool exterior-releasing herbs are briefly introduced separately:
Flos Chrysanthemi(Chrysanthemum Flower).
Pin Yin Name: Jú Huā.
English Name: Chrysanthemum Flower.
Latin Name: Flos Chrysanthemi.
Property and flavor: light cold, pungent, sweet, bitter.
Brief introduction: The herb Flos Chrysanthemi is the dried flower-head of Chrysanthemum morifolium Ramat.(family Compositae), used (1).to disperse wind and heat in the treatment of wind-heat affliction with fever and headache, (2).to pacify the liver and brighten the eyes for treating acute conjunctivitis, and dizziness in hyperactive liver Yang, and (3).to clear heat and counteract toxins for treating boils and sores. The herb is commonly known as Flos Chrysanthemi, Chrysanthemum Flower, Jú Huā.
Botanical source: The herb Flos Chrysanthemi is the dried flower-head of the Chrysanthemum morifolium Ramat., it is commonly known as Chrysanthemum Flower, it is a plant of the Chrysanthemums(mums or chrysanths) genus, the Asteraceae(Compositae) family of the Asterales order. This commonly used species is introduced as:
Chrysanthemum morifolium Ramat.: Botanical description: The plant is commonly known as Chrysanthemum flowers or Ju Hua, are perennial in their original form, 50~140 cm tall, and all are densely covered with white fuzz. The base of the stem is slightly lignified, slightly purplish red, and young branches are slightly ribbed. Leaves are alternate, ovate or ovate-lanceolate, 3.5~5 cm long, 3~4 cm wide, apex obtuse, base subcordate or broadly cuneate, margin usually pinnately deeply lobed, lobes coarsely serrate or heavily serrate, both sides are densely covered with white hairs; petioles have shallow grooves. Headform inflorescences axillary, 2.5~5 cm in diameter; trichomes hemispherical, sepals 3~4 layers, green, coats, marginal membranous, pale brown, outer sepals are smaller, ovate or ovate lanceolate, second layer sepals are broadly ovate, inner sepals are oblong; receptacles are small, convex, hemispherical; ray flowers female, located at margin, tongue linear-long, ca. as long as 3 cm, apex obtuse, white, yellow, reddish or lavender, stamenless, 1 pistil, style is short, stigma 2-lobed; tubular flower bisexual, centrally located, yellow, with 1 ovate membranous scale outside each flower, corolla tube length 4 mm, apex 5-lobed, lobes triangular-ovate, 5 stamens, polypetalous, filaments are very short, isolated, 1 pistil, ovary sub position, oblong, style linear, stigma 2-lobed. Achenes oblong, 4-sided, apically truncated, smooth and glabrous. Its flowering period is from September to November, fruiting period is from October to November.
Growth characteristics: The plant prefers a warm and humid, sunny climate, avoid shade, need adequate sunshine time especially during the flowering period. Cold tolerance, slightly drought tolerance, avoid waterlogging, like fertilizer. The soil requirement is not strict, it can grow in area of high terrain, soil with deep soil layer, rich in humus, loose fertile, good drainage is appropriate for cultivation. It can grow in slightly acidic to slightly alkaline soils.
Characters of herbs: Dried inflorescence, outer layer are several lingual flowers, flattened petals, center by the aggregation of many tubular flowers, there is an involucre at the base, composed of 3 to 4 bracts. The smell is fragrant, light, and slightly bitter. The flower is complete, the color is bright, the smell is fresh, with no impurities is preferred.
Pharmacological actions: The decoction of the chrysanthemum flower can significantly dilate coronary arteries, increase coronary blood flow, and improve myocardial oxygen consumption. It has obvious antipyretic, antihypertensive, and anti-inflammatory effects, and has inhibitory effects on influenza virus, leptospira, and a variety of pathogenic bacteria.
Medicinal efficacy: Dispel wind and dissipate heat, clearing liver and improving vision(removing liver-fire for improving eyesight), calm the liver Yang, clear heat and detoxification, indicated for headache, dizziness, red eyes, dysphoria with smothery sensation in the chest and heart, furuncle, boils, pyogenic infections, dizziness of wind, alcohol poison and malignant boil.
Administration of Chrysanthemum Flower(Jú Huā):
Administration Guide of Chrysanthemum Flower(Jú Huā)
Internally:5~9 grams(CP), or water decoction,1.5~3 qian(about 4.5~9 grams),brewing tea or prepare into pill,powder(DCTM).or water decoction,10~15 grams, or prepare to pill, powder, or brewing tea.Externally: proper amount, wash with water decoction, or mashed and apply stick(CHMM).
1.Introduction of Ju Hua:Flos Chrysanthemi or Chrysanthemum Flower.
2.TCM Books:DCTM(Dictionary of the Chinese Traditional Medicine),CHMM(Chinese Herbal Materia Medica).