Folium Polygoni Tinctorii(Indigoplant Leaf).

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:Herbs Clearing Heat and Counteracting Toxins.

 TCM Herbs Icon05 Introduction: Herbs Clearing Heat and Counteracting Toxins: an agent or substance herbs that counteracts heat toxins or fire toxins, mainly indicated in the treatment of boils, sores, abscess, erysipelas, epidemic infectious diseases, mumps, dysentery, insect or snake bite, and burns.

Classifications of Herbs.

 TCM Herbs Icon 05 Introduction: The Herbs Clearing Heat and Counteracting Toxins are known including:,,, ,,,,,,,,,,,,,,,,,,,,,,,,.

 ✵Till the date Oct 10th,2019, there are totally [28] kinds of common TCM herbs, [43] kinds of related plant species, [3] fungus species, are recorded in this category. These Herbs Clearing Heat and Counteracting Toxins are briefly introduced separately:

Folium Polygoni Tinctorii(Indigoplant Leaf).

 Folium Polygoni Tinctorii Brief Introduction: The herb Folium Polygoni Tinctorii is the dried leaf of Polygonum tinctorium Ait.(family Polygonaceae), used as dyers woad leaf with stronger effects. The herb is commonly known as Folium Polygoni Tinctorii, Indigoplant Leaf, Liǎo Dà Qīnɡ Yè.

 ✵The herb Folium Polygoni Tinctorii(Indigoplant Leaf) is the dried leaf of (1). Polygonum tinctorium Ait., it is a plant of the Polygonum L. genus, the Polygonaceae family of the Polygonales order. This commonly used species is introduced as:

 Polygonum tinctorium Ait. (1).Polygonum tinctorium Ait.: It is commonly known as Liao Lan. Annual herbs. Stem erect, usually branched, 50~80 cm tall. Leaves ovate or broadly elliptic, 3~8 cm long, 2~4 cm wide, dark blue-green when dried, apex rounded obtuse, base broadly cuneate, margin entire, margin shortly hairy, glabrous above, sometimes sparsely puberulent below along leaf veins; Petiole 5 ~ 10 mm; Stipules membranous, slightly loose, 1~1.5 cm long, covered, apex truncate, with long ciliate hairs. Racemes spicate, 2~5 cm long, terminal or axillary; Bracts funnelform, green, ciliate, each bud containing 3~5 flowers; Pedicels fine, subequal with bracts; Perianth 5-lobed, reddish, tepals ovate, 2.5~3 mm long; 6~8 stamens, shorter than perianth; 3 styles, lower connate. Achene broadly ovate, 3-rowed, 2~2.5 mm long, brown, glossy, enveloped in persistent perianth. It is flowering from August to September, fruiting from September to October.

 Polygonum tinctorium Ait. Ecological environment: Indigo prefers warm and humid climate, and is not strict with soil requirements. It prefers well drained, humus rich loam, clay loam and sandy loam, followed by clay, sand and gravel soil, which is not suitable for the growth of indigo. It grows wild in the wilderness ditch edge, mostly for cultivation or semi-wild state. Distributed in China, also in Europe. It is cultivated or semi-wild in north and south provinces of China, naturally distributed in north and northwest of China, and other areas.

 Trait identification:Leaves wrinkled or broken, blue-green or blue-black, mid-vein yellowish to yellowish brown. Leaf blade elliptic, 3~10 cm long, 2~5 cm wide, apex obtuse, base gradually narrow, entire, veins abaxially prominent, lateral veins obvious, lighter color; Petiole flattened, ca. 1 cm long, basally clasped, with membranous stipules. Brittle and fragile. The breath is weak, the taste is light and bitter. Dry stem, thick leaves, color blue and green, no branch stem for the better.


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