Identification of the origin of medicinal materials This product is the dried root and rhizome of Gan Song, Gan Song. Or Gan Song Nardosi Jatamansi DC. Patnia's. Because this medicinal material is "produced in Songzhou, western Sichuan", it has a fragrance similar to turpentine and tastes sweet as medicine, so it is named Gan Rosin for short.
Textual research on the history of medicinal materials: formerly known as Gan rosin, it was first seen in Notes on Materia Medica: "Cluster, thin leaves, out of Liangzhou." "Illustration of Materia Medica" said: "Rosin came from the ancients, and now there are rosin in Guizhou, Zhou Shu, Liaozhou and other places. Shan Ye is overgrown with leaves as thin as thatch and extremely dense roots. Harvest in August. " Liangzhou and Guzang are now in Wuwei, Gansu. Compendium of Materia Medica said: "It is produced in Songzhou, western Sichuan, and it is sweet, hence the name." Songzhou, western Sichuan, is now Songpan County, Aba Tibetan Autonomous Prefecture, Sichuan. According to the textual research mentioned in the above materia medica, this is consistent with Gan Song.
Plant morphological identification
1. Gan Song perennial herb, 7 ~ 45 cm high, with strong fragrance similar to turpentine. The taproot is long and cylindrical, slightly fleshy, single or branched, brown and black; Rootstock is short and askew, covering flaky old leaf tips. Basal leaves are clustered with 6-9 leaves in each cluster, which are linear and narrowly obovate, 4-14cm long and 0.4-1.2cm wide. The main veins are 3-5 parallel, the apex is blunt, the base gradually narrows, the lower part is petiole, with the whole margin, and only the edge sometimes has eyelashes. Flowering from the side of the stem, cauline leaves 1 ~ 2 pairs, opposite, sessile, rectangular and linear, 2 ~ 6 cm long. Cymes are capitate and terminal, with a diameter of 65438 0.5 ~ 2 cm. After flowering, the main axis and lateral axis of inflorescence tend to be obviously elongated, so that cymes are generally arranged. The involucral bracts are lanceolate, 5 ~ 2 ~ 4 mm long and 2 ~ 4 mm wide. Bracts and bracteoles are often lanceolate or broadly ovoid. Calyx small, 5-lobed, lobes semicircular, glabrous, entire; Corolla is purple-red, bell-shaped, 7 ~ 1 1 mm long, slightly hairy outside the tube, inclined at the base, slightly unequal at the top with 5 cracks, broadly ovoid lobes, and long beard at the throat of the corolla tube; Stamens 4; The ovary is inferior, the style is almost as long as the stamens, and the stigma is head-shaped. Achenes obovate, ca. 3 mm long, glabrous; The persistent calyx is unequally 5-lobed, and the lobes are semicircular to broadly triangular, 0.8 ~ 1.2 mm long, smooth and hairless. It blooms in August.
2. The main differences between Gan Song and Gan Song are: the rhizomes are densely sheathed with fibers; After flowering, the main axis and lateral axis of inflorescence are mostly not obviously elongated; Achenes are hairy. The flowering period is from June to August.
Identification of medicinal properties This product is slightly conical and curved, with a length of 5 ~ 18 cm. The rhizome is short, with stem and leaf residues at the upper end, long and narrow, membranous or fibrous. The outer layer is dark brown and the inner layer is brown or yellow. Single or several roots, in the form of nodes, branches or juxtaposition, with a diameter of 0.3 ~ 1 cm. The surface is brown and shriveled, with fine roots and fibrous roots. Brittle, easily broken, rough section, dark brown skin, often cracked, yellow-white wood. Special breath, bitter and pungent taste, and cool feeling.
Microscopic identification of medicinal powder is dark brown. Stone cells are round or irregular polygons, occasionally long, single or in groups, with a diameter of 33 ~ 64 microns, a length of 200μm or more, a thick wall and a colorless and narrow cavity. Cone-shaped or reticular ducts with a diameter of 7 ~ 40μ m are bundled, and sometimes slender wood fibers can be seen beside them. Cork cells are mostly irregular polygons with dark brown walls and thin, containing yellow to brown volatile oil. Basal leaves have many fragments, rectangular or polygonal cells, pale yellow to brown, 20 ~ 3 1 micron in diameter, 50 ~ 90 microns in length, and beaded walls. The other kind of debris cells are slender, up to 200μm in length, and the walls sometimes become thick as beads.
Habitat distribution Gan Song was born in swamp meadow, river beach and shrub slope; Distributed in southern Qinghai and northern Sichuan. Spatholobus suberectus in Gan Song is born in alpine shrubs and grasslands. Distributed in Sichuan, Yunnan, Tibet and other provinces.
Collecting and processing, digging in spring and autumn, removing sediment impurities, drying in the sun or in the shade.
Processing the decoction pieces to remove impurities.
Properties: pungent, sweet and warm. Entering spleen meridian and stomach meridian. Regulating qi and relieving pain, relieving depression and invigorating spleen. Used for abdominal distension, anorexia and vomiting; External treatment of toothache and foot swelling. Oral: 3 ~ 6g is decocted with water. External use: Take proper amount, rinse your mouth with water, wash your feet with decoction or grind into powder and apply it to the affected area.
Pay attention to store in a ventilated and dry place.