Rhizoma Atractylodis(Atractylodes Rhizome).

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.

Classifications of Herbs.

 TCM Herbs Icon 08 Introduction: The Fragrant Odor for Resolving Dampness Herbs are known including:, , , , , , , , .

 ✵Till the date Oct 10th,2019, there are totally [9] kinds of common TCM herbs, [12] kinds of related plant species, are recorded in this category. These fragrant odor herbs for resolving dampness are briefly introduced separately:

Rhizoma Atractylodis(Atractylodes Rhizome).

 Rhizoma Atractylodis Brief Introduction: The herb Rhizoma Atractylodis is the dried rhizome of Atractylodes lancea(Thunb.)DC., or Atractylodes chinensis(DC.) Koidz.(family Compositae), used (1).to eliminate dampness and invigorate the spleen for treating damp accumulation in the spleen and stomach, (2).to dispel wind-damp for rheumatic arthritis, and (3).to improve vision in cases of night blindness. The herb is commonly known as Rhizome of Swordlike Atractylodes, Rhizome Chinese Atractylodes, Rhizome of Swordlike Atractylodes, Rhizome of Simplicifolious Atractylode, Shēnɡ Shù, Cānɡ Shù.

 ✵The herb Rhizoma Atractylodis(Atractylodes Rhizome) is the dried rhizome of Atractylodes lancea(Thunb.)DC., or Atractylodes chinensis(DC.) Koidz., they are plants of the Atractylodes genus, the Asteraceae(Compositae) family of the Asterales order. These 2 commonly used species are introduced as:

 Atractylodes lancea Thunb.DC.01 (1).Atractylodes lancea (Thunb.)DC.: The Atractylodes lancea (Thunb.)DC., is a plant of the Asteraceae(Compositae) family and Atractylodes genus, it is commonly known as "Mao Cang Shu", or "Nan Cang Shu", "Southern Tsangshu", its botanical name was also recorded as "Atractylis lancea Thunb.,or Atractylodes ouata(Thunb.) DC.", perennial herb. Rhizome transverse, nodular. Stems more longitudinal edge, 30~100 cm high, not branched or slightly branched at the top. Leaves alternate, leathery; leaf blade ovate-lanceolate to elliptic, 3~8 cm long, wide 1~3 cm, apex acuminate, base attenuate, central lobes larger, ovate, margin spiny serrated or heavy thorns teeth, dark green at above part, glossy, light green at below part, veins raised, sessile, not cleft or often 2-lobed in lower leaves, apex lobes apex, apex lobes very large, ovate, Shall not or shank. Head inflorescence grows in stem apex, 1 leafy bracts, pinnately divided, lobes spine; involucral cylindric, involucral bracts 5~8 layers, ovate to lanceolate, ciliate; flowers most Corolla tube-shaped, white or slightly reddish, ca. 1 cm, upper slightly swollen, apex 5-lobed, lobes strip; bisexual flowers mostly pinnately divided crested; Flowers generally female flowers, with 5 linear staminodes, slightly curled apex. Achenes obovate, densely yellowish white pilose. Its flowering period is from August to October, fruiting from September to December.

 Ecological environment: the plant grows in thickets and bushes on hillsides. It is distributed in the middle and lower reaches area of the Yangtze River, and other areas of China.

 Trait identification: Rhizome irregularly nodular or slightly concatenate cylindrical, sometimes curved, usually one branch, 3~10 cm long, 1~2 cm in diameter. The surface is yellowish-brown to grayish brown, with fine longitudinal, wrinkles and a few residual fibrous roots, node often narrow shallow horizontal concave groove, internode circular stem mark, often at one end of the residual stem base, occasionally stem mark, some on the surface precipitated white flocculant crystal. Quality is solid, easy to be broken off, the section is a bit uneven, kind of white or yellow-white, scatter most orange-yellow or brown-red oil room (commonly known as a cinnabar point), exposed a little longer, can precipitate out the white fine needle-like crystal. No blue fluorescence in cross-section under UV lamp (254 nm). The smell is strong, slightly sweet, bitter and pungent.

 Atractylodes lancea Thunb. DC.var. chinensis Bunge Kitam. (2).Atractylodes lancea (Thunb.) DC.var. chinensis (Bunge)Kitam.: The Atractylodes lancea (Thunb.) DC.var. chinensis (Bunge)Kitam., is a plant of the Asteraceae(Compositae) family and Atractylodes genus, it is commonly known as "Bei Cang Shu", "Northen Tsangshu", or "Hua Cang Shu", or "Shan Cang Shu(Mountain Tsangshu)", its botanical name was also recorded as "Atractylodes chinensis (DC.) Koidz", or "A.chinensis (DC.) Koidz", perennial herb, plant height is 40~50 cm. Rhizome hypertrophy, nodular. Stems a single or upper slightly disagreement. Leaves alternate, the lower leaves spatulate, the base was winged handle-like, base wedge-shaped to round, the edge of non-continuous spiny teeth, teeth flat, leathery, smooth. Capitulum grows in the top of the shoot tip, the base of the leaf-shaped bracts is lanceolate, the edge of the long comb-shaped dentate, slightly shorter than the head flowers, involucral bracts, involucral bracts 7-8, tubular flowers, corolla white. Achene long, dense silver-white pilose, crown-pinnate. Its flowering period is from July to August, fruiting from August to October.

 Atractylodes lancea Thunb.DC.02 Main difference of this species A.chinensis (DC.)Koidz from the Atractylodes lancea (Thunb.)DC.: Leaf blade is broad, ovate or long ovoid, usually pinnate 5-parted, the upper part of stem 3-5 pinnately lobed or not lobed, margin with irregular thorn-serrated, usually without petioles; Width, 56-layer of total bracts, slightly wider than Atractylodes; staminode apex rounded, not curly. Its flowering period is from July to August, fruiting from August to September.

 The Atractylodes lancea (Thunb.)DC., grows in the hillside shrubs, grass. The Atractylodes lancea (Thunb.) DC.var. chinensis (Bunge)Kitam., grows in low mountain shady shrubs, under the forest and more dry place, with the altitude of 300~900 meters, in the dry slopes, sparse broad-leaved forest or coniferous and broad-leaved mixed forest, rocky hillside or hillside grassland. Prefer climate cool, a large temperature difference between day and night, adequate light climate. Not strict requirements on the soil, can grow on barren hills, slopes, barren soil, and grow better in good drainage, low groundwater level, loose soil, humus content of sandy loam, avoid flooding.

 Ecological environment: the plant grows in thickets, undergrowth and dry places on the shady slope of the mountain. The plant is distributed in north, northwest area, the middle reaches area of the Yellow River, other areas of China.

 Trait identification: Rhizomes often tuberose, sometimes nodular, cylindrical, often curved and with short branches, 4~10 cm long, 0.7~4 cm in diameter. Black-brown surface, outer color oil chamber, after placement does not fold crystallization. The aroma is weak and bitter.


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