淮山原名山药,为薯蓣科植物薯蓣Dioscorea opposita Thunb.的干燥块根,是常用中药,同时又可作副食品,民间常用作煲汤料及炖品的配料,如加工成淮山粉配上米粉,又是婴儿的保健食品。最近,广东省一些地方市场上出现一种伪品淮山片,经鉴定是用旋花科植物甘薯Ipomoea batatas Lam.的块根(又名番薯、红薯、地瓜)经加工、漂白、切片而成。现将这种伪品淮山与正品淮山的性状鉴定和显微鉴定的要点分述如下: Yam originally known as yam, is a dry tuber of Dioscorea opposita Thunb., a commonly used Chinese medicine, and can also be used as a non-staple food. Folks are often used as ingredients for soups and stews, such as processed into yam and powdered rice, and are also babies. Health food. Recently, in some local markets in Guangdong Province, a pseudo-product, Huai’an Tablets, was identified, which was processed, bleached, and sliced ​​using the roots of sweetpotato Ipomoea batatas Lam. (also known as sweet potatoes, sweet potatoes, and sweet potatoes). The main points of the traits identification and microscopic identification of this counterfeit yam yam and genuine yam yam are as follows: