一、白茅根及其伪品的鉴别本品为禾本科植物白茅的干燥根茎,为常用中药,始载于《神农本草经》。有凉血、止血、清热利尿的作用。全国各地均产,野生。春秋采挖,除去地上部分及泥土,洗净,晒干。目前,商品白茅根比较混乱,常有伪品出现。现将其主要鉴定特征区别如下,以供鉴别。 I. Identification of Rhizoma Imperatae and Its Counterfeit Products This product is a dried rhizome of the grass family Pyracantha. It is a commonly used Chinese medicine and was first introduced in the Shennongboshi Classic. Cooling, bleeding, heat diuretic effect. Produced throughout the country, wild. Digging in spring and autumn, remove the above-ground parts and mud, wash and dry. At present, the quality of Rhizoma Imperatae is relatively confusing, and counterfeit products often appear. The main identification features are now distinguished as follows for identification.