Rhizoma Dioscoreae Hypoglaucae(Hypoglaucous 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 Hypoglaucae(Hypoglaucous Yam Rhizome).

 Rhizoma Dioscoreae Hypoglaucae Brief Introduction: The herb Rhizoma Dioscoreae Hypoglaucae is the dried rhizome of Dioscorea hypoglauca Palib.(family Dioscoreaceae), used in a similar way to Rhizoma Dioscoreae Septemlobae. The herb is commonly known as Rhizoma Dioscoreae Hypoglaucae, Hypoglaucous Yam Rhizome, Fěn Bì Xiè.

 ✵Official herbal classics defined the herb Rhizoma Dioscoreae Hypoglaucae(Hypoglaucous Yam Rhizome) as the dried rhizome of the species (1). Dioscorea hypoglauca Palib. It is a plant of the Dioscorea L. genus, the Dioscoreaceae family of the Liliales order. This commonly used species is introduced as:

 Dioscorea hypoglauca Palib. (1).Dioscorea hypoglauca Palib.: It is commonly known as Fěn Bēi Shǔ Yù. Twine grass vine. Rhizome transverse, bamboo-shaped, varying in length, ca. 2 cm in diameter, with slender curved fibrous roots on the surface, cross-section yellow. Stem sinistral, long cylindrical, glabrous, sometimes densely with short yellow hairs. Leaves alternate, triangular or ovoid, apex acuminate, base cordate, broadly cordate or sometimes sub truncate, margin undulates or nearly entire (some plants leaf margin translucent dry membranous), black after drying, sometimes abaxially grayish-brown with white prickles, dense along veins.

 Dioscorea hypoglauca Palib. Flowers unisexual, dioecious. Male inflorescence solitary or 2~3 clustered in leaf axils; Male flowers sessile, 2~3 clusters at base of inflorescence, often solitary to top; Bracts ovate-lanceolate, apex acuminate, bracteoles ovate, apex sometimes 2-lobed; Perianth disk, tip 6 lobed, lobes yellow when fresh, black when dry, sometimes a few unchanged black; 3 stamens, inserted on the perianth tube, filaments shorter, anthers ovoid, flowers after opening drug septum narrowed, often half of anthers, a short forked, sometimes only a vestigial stamen filament, with 3 development stamens alternate. Female inflorescence spiculate; The stamens of female flowers are filamentous; Ovary long cylindrical, stigma 3-lobed. Capsule truncated at both ends, usually equal at the top and base, chestnut - brown surface, shiny, drooping when mature. 2 seeds, inserted in the middle axis, with membranous wings all around when mature. Its flowering period is from May to August, fruiting from June to October.

 Dioscorea hypoglauca Palib. Ecological environment: The plant grows under the edge of the mixed forest or sparse forest at the edge of the steep slope of the mountainside, gentle slope of the valley, or shade of gully. Photophobia and the rhizome is reproductive material. It is suitable for sandy loam with deep soil layer, loose and fertile soil, strong water permeability, good water retention, and drainage conditions, high soil fertility, and organic matter content. The soil pH is neutral to slightly acidic. The plant distributes in the lower reaches area of the Yangtze River, the middle reaches area of the Yellow River, the Zhujiang river area, and the northern Taiwan of China.

 Dioscorea hypoglauca Palib. Trait identification: irregular slices, margins irregular, of varying sizes, ca. 0. 5 mm. Some have brown-black or gray-brown skins. The cut surface is yellowish-white or light grayish brown, and the vascular bundles are scattered in small spots. Loose and slightly elastic. Slight smell, pungent taste, slight bitterness.


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