广寄生系桑寄生属植物,按国产桑寄生因产地不同而有三种,产于珠江流域者称广寄生,产于长江流域者称杜寄生,产于华北及东北者称北寄生。我国自古即以桑寄生供药用,神农本草经将其列入上品,大明本草谓能“助筋骨,益血脉”。近代学者用做强壮剂、消肿……及治高血压,血管硬化性四肢麻木……。关于广寄生之化学研究,最近本文作者之一(曾广方)自广寄生(Loranthus paracticusL. C. Merr.)中分离出两种结晶,其中之一为—黄酮类苷,暂称为广寄生苷,水解所得之 Parasitism Department of parasitic plants, according to the origin of Sang parasites due to different origin and three, produced in the Pearl River Basin, said Parasitism, produced in the Yangtze River Basin, said Du parasitic, produced in North China and northeast, said North parasitism. Our country since ancient times to mulberry parasite for medicinal purposes, Shennong Herbal Classic will be included in the top grade, Daming Materia Medica that can “help muscles, benefit blood.” Modern scholars used as tonic, swelling ... ... and treatment of hypertension, vascular sclerosis limb numbness ... .... For the chemical studies of Parasites, one of the authors of this paper (Zeng Guangfang) recently isolated two crystals from Loranthus paracticus L. C. Merr. One of them is flavonoid glycosides, tentatively called Hirudin, Hydrolysis derived