<正>选取１５个主要分类性状对２５个桂花品种进行了数量分类研究。主成分分析结果综合反映了各性状的信息，揭示了桂花品种分类的关键，为今后进行性状观察、记载及取舍等提供了定量依据。系统取类分析结果表明了花色、花期等指标在桂花品种分类中居重要地位，同时，还对桂花品种间的亲缘关系作了探讨。

The article sudied the numerical classification of cultivars of sweet osmanthus for the first time. 15 main characters had been selected to study 25 cultivars of sweet osmanthus. The results of PCA method represented the information of all selected characters comprehensively and revealed the key to the cultivar classifivation, thus providing quantitative foundation for observing, recording and accepting or rejecting the characters hereafter. The results of cluster analysis showed that some characters such as flower color and flower stage etc, played an important role in the classification. At the same time, the article also emphatically delved into the affinity among these cultivars.