寄生係屬常用中藥，於《神農本草經》中列為上品，具祛風濕、強筋骨、補肝腎、安胎功能，依據中華中藥典記載有桑寄生及槲寄生兩種，桑寄生(Taxilli Ramulis)基原為桑寄生科植物桑寄生Taxillus Chinensis (DC.) Danser的乾燥帶葉莖枝；槲寄生為同科植物槲寄生Viscum coloratum (Kom.) Nakai的帶葉莖枝，由於同科植物性狀相似易造成誤用，為瞭解目前市售寄生類藥材之基原，本計劃收集桑寄生、紅花寄生(Taxillus parasiticus L.)、大葉桑寄生[Taxillus liquidambaricolus (Hayata) Hosokawa]、槲寄生、楓寄生(Viscum liquidambaricolum Hayata)、柿寄生(Viscum angulatum Heyne)、桑枝(Morus
alba L.)等對照藥材，利用形態學、顯微鏡檢、解離法及薄層層析法，建立一系列可供迅速鑑別寄生類藥材之方法，提供業界及檢驗機關參考，並以逢機取樣方式價購桑寄生50件，槲寄生27件，共計77件檢體，與對照藥材比對，結果市售50件桑寄生檢體僅1件為正品桑寄生，其餘檢體有25件為桑枝，1件為大葉桑寄生，20件槲寄生，2件桑枝混雜紅花桑寄生，1件未知物；至於槲寄生檢體僅購得27件，鑑定結果24件正品槲寄生，2件桑枝，1件未知物，顯示寄生仍有誤用之情形，由於不同科屬之植物，成分、性狀、功效、藥理機轉皆有迥異，宜應導正使用正確藥材。

Loranth Ramulus(Chi-Sheng, 寄生) is commonly used in traditional Chinese medicines and is listed as a high-grade drug in Shen Nung Pen Tsao Ching. It can remove wind dampness, strengthen tendons and muscles, supplement liver and kidney, and stabilize fetus. Sang-Chi-Sheng (桑寄生) and Hu-Chi-Sheng (槲寄生) have the same Chinese name ”Chi-Sheng but their origins are different. Sang-Chi-Sheng is the dried foliferoos stem and branch of Taxillus Chinensis (DC.) Danser, whereas Hu-Chi-Sheng belongs to Viscum coloratum (Kom.) Nakai. However, Chi-Sheng may be adulterated with each other because of similar appearance. In order to clarify the origins of commercial Chi-Sheng raw materials in Taiwan market, we collected seven references including Taxillus Chinensis (DC.) Danser (桑寄生), Taxillus parasiticus L.（紅花寄生）, Taxillus liquidambaricolus (Hayata) Hosokawa （大葉桑寄生）, Viscum coloratum (Kom.) Nakai (槲寄生), Viscum liquidambaricolum Hayata（楓寄生）, Viscum angulatum Heyne（柿寄生）, and Morus alba L.（桑枝）using morphology, microscopy, maceration and thin layer chromatography to establish several differences. The 50 Sang-Chi-Sheng (桑寄生) and 27 Hu-Chi-Sheng (槲寄生) raw materials were purchased from Chinese herbal stores in Taipei, Taichung and Kaoshiung and compared with the references. Of the Sang-Chi-Sheng samples identified, only 1 was Taxillus chinensis (DC.) Danser, 25 were Morus alba L., 1 was Taxillus liquidambaricolus (Hayata) Hosokawa, 20 were Viscum coloratum (Kom.) Nakai, 2 were Taxillus parasiticus L mixing with Morus alba L., and 1 was unknown. Of the Hu-Chi-Sheng samples identified, 24 were Viscum coloratum (Kom.) Nakai , 2 were Morus alba L., and 1 was unknown. Our results showed that Sang-Chi-Sheng and Hu-Chi-Sheng are still adulterated and misused in the market.