Abstract: This paper is a rcsult of our engaging to study for the hierarchic problem of group Pseudokobresia C. B. Clarke, Which we have used classical com- parative method in plant taxonomy as well as the news-system, the correlative system and distance-system of numerical taxonomy among sect. Pseudokobresia and some relative groups (genus Carex, genus Blysmus, and sect. Elyna, Sect. Kobresia, sect. Laxa, Sect. Hemicarex of genus Kobresia). The dendrograms have reflected that the group Pseudokobresia differs from the genus Kobresia, although it is nearer to the genus Carex and the genus Blysmus, all of them being dislike. Hence it is better to regard it to the rank of genus rather than as a section of Kobresia, and we are agreeing to the point ot view of H. A. lvanova.

Key words: hierarchic, problem, genus, methods

摘要： 本文是针对大花嵩草组的等级问题，选用了本类群和相关类群资料；应用经典植物分类学的比较方法和数字分类学的信息系统分类，相似性相关系统分类和相似性距离系统分类的方法进行研究的结。数宇分类的树系和和经典形态分类的比较表反映出它不同于蒿草属，虽然它较接近苔草属和扁穗苔属，但它们的形态性状是不相同的，所以把它作为属的等级更加合适；同时我们也同意伊万诺娃的观点。

关键词: 数字, 形态, 扁穗苔属