Rhizoma Dioscoreae Septemlobae(Seven-lobed Yam 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:Diuretics and Hydragogues Herbs:Herbs Diuretics.

 TCM Herbs Icon09 Introduction: Herbs Diuretics: also known as damp-draining diuretic herbs,an agent or substance herbs that increases urine excretion and water discharge for treating internal retention of dampness.

 
Classifications of Herbs.

 TCM Herbs Icon 09 Introduction: The Diuretics and Hydragogues Herbs:Herbs Diuretics are known including:, , , , , , , , , , , , , , , , , , , , , , , , , , .

 ✵Till the date Oct 10th,2019, there are totally [27] kinds of common TCM herbs, [32] kinds of related plant species, [2] kinds of related fungus species, [2] kinds of related insect species, [1] kind of related mineral are recorded in this category. These Diuretics and Hydragogues Herbs:Herbs Diuretics are briefly introduced separately:

 
Rhizoma Dioscoreae Septemlobae(Seven-lobed Yam Rhizome).

 Rhizoma Dioscoreae Septemlobae Brief Introduction: The herb Rhizoma Dioscoreae Septemlobae is the dried rhizome of Dioscorea septemloba Thunb., or Dioscorea futschauensis Uline(family Dioscoreaceae), used (1).to eliminate damp-turbidity in cases of chyluria and stranguria with turbid urine, and (2).to dispel wind-damp in cases of rheumatic arthritis. The herb is commonly known as Rhizoma Dioscoreae Septemlobae, Seven-lobed Yam Rhizome, Severlobed Yam, Mián Bì Xiè.

 ✵Official herbal classics defined the herb Rhizoma Dioscoreae Septemlobae(Seven-lobed Yam Rhizome) as the dried rhizome of the species (1). Dioscorea septemloba Thunb., or (2). Dioscorea futschauensis Uline. They are plants of the Dioscorea L. genus, the Dioscoreaceae family of the Liliales order. These 2 commonly used species are introduced as:

 Dioscorea septemloba Thunb. (1).Dioscorea septemloba Thunb.:  It is commonly known as Mián Bì Xiè. Perennial twining grass vine. Rhizomes transverse branched, stout, 2 ~5 cm in diameter, loosely spongy when dry, coat grayish-yellow, most slender fibrous roots. Stem sinistral, cylindrical. Single leaves alternate; Leaves slightly leathery, morphologically variable, base palmately deeply cordate, upper leaves ovate, margin undulate or entire, lower reticulate veins conspicuous, both surfaces sparsely white-hirsute. Male inflorescence axillary, racemose, male flowers sessile, 4~5 mm in length with the perianth; Perianth orange when fresh, brown when dry; 6 stamens, sometimes only 3 developed. Capsule reflexed and pendulous at maturity, wings nearly semicircular, apex slightly concave, base rounded, 1.5~1.8 cm long, 1.2 cm wide. Seeds oblate ovoid, 4~5 mm in diameter, surrounded by membranous wings. Its flowering period is from June to July, fruiting from July to October.

 Dioscorea septemloba Thunb. Ecological environment: The plant grows at areas with an altitude of 450~700 meters above sea level. The plant distributes in the middle and lower reaches area of the Yangtze River, the Zhujiang river area, and other areas of China.

 Trait identification: Rhizomes are mostly sliced longitudinally or longitudinally, ranging in size from 2 to 5 mm thick; The outer skin is yellowish-brown, thicker, more curly around, yellowish-white in section, rough. There are yellow and brown dotted vascular bundles scattered. It is loose and slightly spongy. Slight smell, slightly bitter taste.

 Dioscorea futschauensis Uline. (2).Dioscorea futschauensis Uline.:  It is commonly known as Fú Zhōu Shǔ Yù. Twine grass vine. Rhizome transverse, irregularly long cylindrical, rind tawny. Stem sinistral, glabrous. Leaves alternate, slightly leathery, palmately lobed at the base of the stem, 7-lobed, unequal, deeply cordate at base, ovate-triangular above middle, margin undulate or entire, apex acuminate, deeply cordate or broadly cordate at base, abaxially reticulate veins conspicuous, sparsely white prickles along leaf veins on both sides.

 Flowers unisexual, dioecious. Male inflorescence racemose, usually paniculate, solitary or 2~3 clustered in leaf axils; Male flowers pedicellate, perianth orange when fresh, black when dry, 4~5 mm long, base connate, apex 6-lobed, lobes ovoid; 6 stamens, sometimes only 3 developed, inserted at base of perianth tube, with vestigial pistil. Female inflorescence similar to male inflorescence; Female perianth 6-lobed, staminodes anther incomplete or only filaments.

 Dioscorea futschauensis Uline. Capsule triangular, winged, semicircular, 1.5~1.8 cm long, 1~1.2 cm wide; Seeds oblate, 4~5 mm in diameter, inserted in the middle axis of each compartment, with membranous wings all around when mature. Its flowering period is from June to July, fruiting from July to October.

 Ecological environment: The plant grows in thickets and forest margins on hillsides, along gullies or roadsides with an altitude below 700 meters above sea level. The plant distributes in the lower reaches area of the Yangtze River, north of Guangdong, Quanzhou of Guangxi, China.

 Trait identification:Rhizomes irregularly long cylindrical, 6~16 cm long, 1~4 cm in diameter. The surface is uneven, tawny, with irregular wrinkled hook grain and scattered tumor shape protruding stem mark. It is hard and hard to break. The products are usually cut into thin slices, 2~3 mm thick, pale or yellow-white, pink, scattered with dotted vascular bundles. The quality is relatively loose, slightly spongy. Slight smell, slightly bitter taste.

 
 

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