中国药科大学中药学专业英语课件--丹参.pptVIP

Free template from 丹 参 Radix Salviae Miltiorrhizae Main Contents Origins Plant Morphology Collection and Preparation Production and Commerce Description Microscopical Characters Chemical Constituents Physical and Chemical Identification High Performance Liquid Chromatography Plant Morphology A perennial herb, densely pubescent and glandular hairy throughout. Root cylindrical, vermillion. Stem 4-angled, branched at the upper part. Leaves opposite, pinnately compound; leaflets 5～7, ovate or elliptical-ovate, serrate along the margin, pubescent on both surfaces. Flowers in terminal or axillary verticillate pseudo-racemes; calyx bell-shaped; corolla bluish-purple. The upper lip erect, slightly falcate, retuse at apex, the lower shorter, 3-lobed, the middle lobe larger, 2-cleft; stamens 2, filaments short, connectives long, the upper end of the connective bearing a fertile anther-cell, the lower end with an imperfect one; ovary deeply 4-lobed, style gynobasic. Nutlets 4, ellipsoid. Description Root cylindrical or conical, usually curved, branched,10～30 cm long, 0.3～1.5 cm in diameter. Externally brick-red, brownish-red or purplish-brown, rough, longitudinally furrowed or wrinkled, the bark of old roots mostly scaling off, sometimes crowned with remains of stem base. Texture hard and fragile, fracture fibrous, bark dark reddish-brown to purplish-brown, wood showing bundles of vessels, yellowish-white, arranged radially. Odour, slight; taste slightly astringent. Transverse section Cork consisting of several layers of cells, mostly containing orange or purplish-brown contents. Phelloderm narrow. Phloem relatively broad. Cambium ring distinct. Xylem bundles radial, consisting of vessels, xylem fibres and xylem parenchyma. Xylem fibres often accompanied by vessels. Stone cells scattered in phelloderm and phloem. Powder Reddish-brown. Stone cells occurring singly and scattered throughout, subrounded, subrectangular, subfusiform or irregular,