黄连属药用植物的数量分类学研究

 以黄连属药用植物７种２变种和１个待定种为１０个分类单位，以形态为主兼顾组织结构，列出３３项性状，对这些植物进行了数量分类。用单链法、全链法、中间距离法（β＝０，一０．２５）、重心法、类平均法等系统聚类方法，探索了这些植物彼此间的亲缘关系，认为西藏黄连与云南黄连有别，云南黄连应予成立。本研究结果为黄连属药用植物的分类和鉴定作参考。

Numerical taxonomy of medicinal plants from Coptis

Numerical taxonomical studies were done of medicinal plants form Coptis of 7species,2 varieties and 1 need nominating species,used as 10 operational units(OTUs).Among 33characters used for analysis, 30 were morphological and 3 anatomical.Euclid coefficient used toshow quantitative index of similarity among OTUs,The dendrograms from methods of systematiccluster including those of single likage,complete linkage and median linkage(B=0,-0. 25)。 Cen-troid method and group average method were created respectively. All calculations and dendro-gram-making were treated on IBM computer with the program by BASIC Ianguage. The resultsshowed that classical taxonomy is reasonable; C. teeta Wall. Is different from C. teettodes C.Y.Cheng et Hsiao. The latter should be established.