关于苔草属寸草组的分类学讨论

本文针对苔草属Carex L.寸草组Sect.Boernera 的三个种Carex duri-uscula C。A.Mey.,C。rigescens(Franch.)V.Krecz.和C.stenophylloides V.Krecz.长期以来存在争议的分类学问题,应用对植物体外部形态、营养体解剖、变异类型的定量分析、花粉和果实表面的电镜扫描、过氧化物酶同工酶以及分布区等研究的手段,对该组三种植物进行了全面客观的分析讨论。研究良明,寸草组植物具有很大的相似性,是一个十分自然的类群。因此,作者认为把寸草组细分为各个独立种的做法有些不妥,同时,文章不仅支持了把C.rigescens(Franch.)V.Krecz.合并到C.stenophylloides V.Kre-cz 中的观点,而且提出把寸草组三个种C.duriuscula C.A.Mey.,C.rigescens(Fr-anch.)V.Krecz.和C.stenophylloides V.Krecz 合并为一种C.dtitiuscula C.A.Mey.更为合理.最后对该组植物进行了分类学处理.

A Taxonomic Discussion on Genus Carex L.Sect.Boernera

This paper is a result of our engaging to study for taxonomic problemdebated long-time of 3 species of Genus Carex L.Sect.BoerneraCarexduriuscula C.A.Mey.,C.rigescens(Franch.)V.Krecz.and C.stenophyll-oides V.Krecz.].In order to have an objective proof in many ways,we haveused method of vegatative anatomy and morphology as well as the rationalanalysis Of variation patterns,pollen and achene surface in electron mic-roscopy,peroxidase isozyme and distribution ect.These results indicatethat there are much similarity in 3 species,and Sect.Boernera is a verynatural group.Therefore,the author regard that it is not well-thought-outto divide Sect.Boernera into some independent species.Herehe not onlysupports the point of view of T.V.Egorova(Combining C.rigescens and C.stenophylloideseinto one species).but also mentions a more reasonableopinion of combining C.duriuscula C.A.Mey.,C.rigescens(F anch.)V.Krecz.and C.stenophylloides V.Krecz.into one species.At last,ataxonomic treatment is given.