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(一)大黄[植物]大黄属蓼科植物,虽有许多异种,但都是一类多年生的草本。茎长约四五寸,叶如手掌状而有浅缺;夏末秋初,开淡黄色小花。(取材)十一月间采集它的根状茎。剥去外皮,干燥后,成圆柱形或圆锥形的块。以浓黄祸色为上品;其次为黄色;而黑色的认为不可用。用时或切片,或磨为粉末。据中药家鉴定,以紫地锦纹的四川产品为最佳。[性质]气味特异而带芳香,人口有苦味而带收敛。根据本草记载,作为苦寒药。[成份]大黄根中,现在知道的,除含草酸钙及
(1) Rhubarb [Plant] Rhubarb belongs to the family Polygonaceae. Although it has many different species, it is a type of perennial herb. The stems are about four or five inches long, and the leaves are palm-shaped and shallow; at the end of summer and early autumn, they are light yellow flowers. (Origin) Its rhizome was collected in November. Peel off the skin and dry it to form a cylindrical or conical block. The yellow color is the top grade, followed by the yellow color, and the black color is considered unusable. Use or slice, or grind to powder. According to the appraisal of Chinese herbalists, the Sichuan products with purple lines are the best. [Nature] Odor specific and aromatic, population bitter and with convergence. According to herbal records, as a bitter cold medicine. [ingredients] rhubarb root, now known, in addition to calcium oxalate and