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天麻为常用中药。近年来用药病人增多,各种伪晶也相继发现。我市发现的有菊科植物大理菊(Dah-lia pinnata Cav),紫茉莉科植物紫茉莉(Miraliliisjalapa L．)及茄科植物马铃薯(Solanum tulerasumL．)的块茎,经加工后充作天麻出售。最近又新发现用美人蕉科植物的根茎伪充天麻,经鉴定为姜芋(Canna edulis Ker)的块茎削去大部分外皮,一端留有残留茎基,另一端削成钝圆,经过蒸煮成型、干燥后充作天麻出售。曾在云南、贵州、河南等省(市)销售。现将姜芋作成天麻的性状、显微特征等分述如后．供参考。
Gastrodia is a commonly used traditional Chinese medicine. In recent years, more and more patients have been treated with drugs, and various pseudo-crystals have also been found. The tubers of Dah-lia pinnata Cav, Miraliliisjalapa L. and Solanum tulera sum L., which are found in our city, were processed and sold as Gastrodia elata. Recently, it was newly discovered that the roots and stems of the Cannabalaceae plant were pseudo-gastrically filled with tubers identified as Canna edulis Ker, and most of the outer skin was peeled off. One end had residual stems, and the other end was bluntly rounded and steamed. After drying, it is sold as Gastrodia. It was sold in Yunnan, Guizhou, Henan and other provinces (cities). The traits and microscopic characteristics of gastrodia elata as a gastrodia are now described as follows. for reference.