采用随机扩增多态DNA（RAPD）技术对山麦冬属的4种植物进行研究，并以沿阶草OphiopogonbodlinienLevl.为组外比较，用SPSS3.1＋软件对实验数据进行统计分析，得到聚类图。观察所得结果，发现这5种植物被分为两大类群，短葶山麦冬、阔叶山麦冬、山麦冬、湖北山麦冬为一类，沿阶草为另一类，这与经典分类相一致，前4种隶属于山麦冬属，后一种属于沿阶草属；同时，我们发现短葶山麦冬和阔叶山麦冬相对遗传距离较近，结果为阔叶山麦冬是短葶山麦冬的阔叶变种提供分子遗传方面的佐证。

Four species of Lzriope Lour. genus were studies by means of Randomized amplification of polymorphous DNA (RAPD) technique , with你hiopogon bodinieri Levl. as the outgroup reference. Analysis of the experimental data with the aid of SPSS 3. 1 revealed that the 5 plants can be classified into two genus as was done in the classical classification,i. e. L. spicata(Thunb.)Lour. ,L. spicata(Thunb.)Lour. var. prolifera Y. T. Ma,L. platyphylla Wang et Tang and L. muscari (Decne) Bailey belong to genus 1.. Lour. ,while O. bod- inieri Levl. belongs to genus D. Ker-Gravel. It was also found that L. Platyphylla was more genetically related to L. muscari,providing the evidence that it is a broad-leaf variety of L. muscari(Decne) Bailey.

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