Rhubarb pierced

[ ] Dà I Pinyin name Huá n Liá n C ì
[ alias ] soil Huanglian Coptis, big sister, stone spines, wide leaf chicken limb Coptis, thorns, spines, Rhizoma Coptidis chicken feet three pin
[ source ]
Medicine medium source: Berberidaceae powder of the plant leaf barberry roots and stems.
Latin botanical name: Berberis pruinosa Frnch. animal fossil
Harvest and storage: annual production root, removing impurities, fresh or dried, fresh cut. Dried root or stem not film, spray water soaked slice, dried.
[ ] the original morphology of Berberis pruinosa, evergreen shrub, high 2-3m. Root stout, section shallow yellow. Small right section having a hard3 branched spines, long 2-3cm. Leaf4-6clusters, leathery; several sessile; leaf blade elliptic, oblong or obovate,2.5-4.5cm long,1.5-2.2cm wide, apex acuminate, base cuneate, margin sparsely spiny teeth 1-6, rarely subentire, veins not significant to pulseless, dark green above, white below ash, was white powder. Flowers 10-25fascicled leaf axils; sepals 6, with 2bracts; yellow flowers with sepals, petals 6, short; stamens 6, anthers valves. Berry ellipsoid or subglobose, without style, being white or blue powder. Florescence in May, month of fruit period 8-9.
[ ] habitat distribution
Ecological environment : in altitude 1600-3000m mountain road.
Resource distribution: distribution in the Guangxi Yunnan, Tibet and other places.
[ character ]
Character identification, root cylindrical irregular curved surface, diameter 2-6cm, yellow or brown, longitudinally corrugated groove; qualitative hard, hard to break, section cortex deep yellow, yellowish wood department, accounts for the diameter of 8/10-9/10, obviously the most radiant ray; micro gas, and bitter taste. Stems and branches, cylindrical,2branching, diameter 1-6mm, length, surface grayish green, thick with conspicuous longitudinal ridge, acupuncture3fork, thorn grows up to 3cm; hard, easy to break, break section fibrous, cross section face and wood of golden yellow, with dense radial texture, spinal cord the Department of yellow-white; micro gas, taste bitter.
Microscopic identification, the transverse section of the stem: cork layer for 7-8column wood whole cell, often summer cleft, cork cell wall thickening of the outer wall of equine foot shape, thinner. Cortical narrow, cell size, cutting to extend. Vascular monocyclic type,40-50, ring; phloem crescent, single fiber dispersion in diameter,9μ m, thin wall; fascicular cambium is not obvious; xylem developed, the catheter diameter of about 24μ M. Ray flat,1-4columns of cells, phloem ray cells often contain calcium oxalate crystal. The pith of larger diameter, approximately1/2.
[ ] stems contain chemical ingredients of berberine ( berberine )1.58%, also containing Rheum tetrandrin ( palmatine ) and trace of jatrorrhizine ( jatrorrhizine ).
[ ] identification
Physicochemical identification, (1) and a bit of powder structure on a glass slide, and 2% hydrochloric acid 1, sit for a while after microscopic examination, visible berberine hydrochloride needle crystal cluster.
(2) for a bit of powder structure on a glass slide, dropping30% nitric acid1-2 drops, sit for a while after microscopic examination, visible yellow nitrate berberine needle druse, after heating crystallization disappear and marked in red.
[ ] taste bitter cold;
[ ] to the liver; stomach; intestine by
[ indications ] heat dampness; heat-clearing and detoxicating. The main damp-heat diarrhea; diarrhea; jaundice; heating; sore throat; oral gingival swelling; eye swollen red eyes; mumps; mastitis; boil; scald
[ usage]: orally taken decoction,10-15g. External: amount, trace and apply; or at the end of the inquiry tune apply.
Excerpts from" Chinese Materia Medica" [ ]


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